CN105858263A - Wood shaving conveying metering device and method for conveying wood shaving thereof - Google Patents

Abstract

The invention discloses a shavings conveying metering device, comprising: a base; a hopper; a conveying device having a first conveying belt and a second conveying belt; a feeding roller device having a brush feeding roller, a brush feeding roller and a The gap between the first conveyor belts is adjustable; the self-balancing metering device is installed under the second conveyor belt and has a scale body structure to realize self-balancing; among them, the brush feeding roller is used to absorb and spread the shavings, so that the shavings will pass through The shavings conveyed by the first conveyor belt are evenly spread on the second conveyor belt; wherein, the scale body structure includes a scale frame and a counterweight connected to one end of the scale frame, and the scale frame and the counterweight are in a balanced state. The device of the present invention has simple structure, uniform thickness of the shavings to be transported, good shaving spreading effect, facilitates accurate calculation of the delivery flow of the shavings, and solves the problem of poor sizing quality due to errors in the calculation of the delivery flow of the shavings in the subsequent sizing process. In addition, the invention also discloses a method for conveying shavings by using the above-mentioned equipment.

Description

Wood shavings conveying metering device and method for conveying shavings

technical field

The invention relates to the technical field of wood-based panel manufacturing, in particular to a shaving conveying and metering device applied to a wood-based panel manufacturing production line and a method for conveying shavings.

Background technique

Granular material metering silos are widely used in wood-based panel, construction, coal, chemical and other industries, but due to the special application requirements of wood-based panel production lines, metering silos used in other industries are not suitable for wood-based panel production lines. The shavings metering silo used on the wood-based panel production line needs to break up the shavings to prevent the shavings from agglomerating. After the production capacity of the shavings metering silo in the prior art is increased, the metering accuracy is greatly reduced due to the increase in the amount of shavings conveyed.

Contents of the invention

The object of the present invention is to solve the above problems and provide a shavings conveying and metering device and its method for conveying shavings. The shavings conveying and metering device has a simple structure. When the shavings are conveyed by this device, the thickness of the shavings conveyed is uniform and the shavings are spread well. , it is convenient to accurately calculate the conveying flow of shavings, and solve the problem of poor sizing quality caused by the error in calculating the conveying flow of shavings in the subsequent sizing process.

In order to achieve the above-mentioned purpose of the present invention, the shavings conveying and metering equipment of the present invention includes: a base for placing a silo; a silo arranged above the base, with an inlet at one end and an outlet at the other end; a conveying device , with a first conveyor belt and a second conveyor belt arranged inside the silo in parallel up and down along the moving direction, for conveying the shavings from the feed port to the discharge port in a relay manner; in addition, it also includes: a discharge roller device , with a brush discharge roller arranged at the discharge end of the first conveyor belt, with an adjustable gap between the brush discharge roller and the first conveyor belt; a self-balancing metering device installed on the second conveyor belt Below, there is a scale body structure that realizes self-balancing, which is used to weigh the weight of the shavings on the second conveyor belt; wherein, the brush unloading roller is used for absorbing and spreading the shavings, so that the shavings will be transported by the first conveyor belt. The shavings are evenly spread on the second conveyor belt; wherein, the scale body structure includes a scale frame and a counterweight connected to one end of the scale frame, and the scale frame and the counterweight are in a balanced state.

Further, the shavings conveying and metering equipment further includes: a material rake device, which has a plurality of material rakes located above the first conveyor belt and distributed in steps along its traveling direction; wherein, when using the first conveyor belt to transport the shavings During the process, the heights of the plurality of rakes relative to the first conveyor belt are adjusted synchronously so as to make the thickness of the shavings delivered to the discharge end of the first conveyor belt uniform.

Wherein, the material rake device also has: a pair of material rake brackets, which are respectively arranged on the outer walls of the two side plates of the storage bin, and one end of each material rake bracket is hinged to one end of the side plate; a pair of material rake lifting adjustment mechanisms, They are respectively installed on the other end of the two side plates of the silo, and are connected with the other end of the corresponding rake bracket to adjust the inclination angle of the rake bracket relative to the first conveyor belt; wherein, the two ends of each rake are respectively provided by The support of the material rake bracket; wherein, the height of the plurality of material rakes relative to the first conveyor belt is adjusted synchronously through the following steps: adjusting the inclination angle of the material rake bracket relative to the first conveyor belt, so as to adjust each The height of each material rake relative to the first conveyor belt.

Preferably, the rake lifting adjustment mechanism includes: a bracket installed on the other end of the corresponding side plate of the silo, with a horizontal plate vertically connected to the side plate of the silo; a screw installed on the horizontal plate, and its top protruding from the horizontal plate; the adjusting nut forms a threaded fit with the part of the screw rod above the horizontal plate, and realizes the adjustment of the inclination angle of the rake bracket relative to the first conveyor belt through screw adjustment; wherein, the other end of the rake bracket is connected to the The bottom end of the screw rod is hinged.

Further, the rake device further includes: a rake fine-tuning mechanism, which is correspondingly arranged at both ends of the corresponding rake, and is used to adjust the position of the rake relative to the rake support.

Preferably, the rake fine-tuning mechanism includes: a slider, which is slidably arranged on the upper end surface of the rake support; bolts, used to fasten the slider to the rake support; wherein, used to support the rake The material rake bearing of the rake is fixedly installed on the slide block.

Wherein, the shavings conveying and metering equipment further includes a belt deviation adjustment device for preventing deviation of the first conveyor belt and the second conveyor belt respectively.

Preferably, the belt deviation adjustment device includes: a position sensor, arranged near the first conveyor belt or the second conveyor belt, for detecting the deviation direction of the first conveyor belt or the second conveyor belt And the generated deviation signal is transmitted to the control system, so that the control system generates a corresponding deviation adjustment command; the transmission mechanism is connected with the control system, and it performs the corresponding deviation adjustment action according to the deviation adjustment command of the control system; the belt deviation adjustment roller , respectively connected to the transmission mechanism and the first conveyor belt or the second conveyor belt, driven by the transmission mechanism, to adjust the offset direction of the first conveyor belt or the second conveyor belt.

In particular, the transmission mechanism includes: an electromagnetic reversing valve connected to the control system; an air cylinder or a hydraulic cylinder connected to the electromagnetic reversing valve, whose piston rod protrudes in a direction perpendicular to the axial direction of the belt deflection roller , and the protruding end of the piston rod is hinged with the deflection adjustment bearing used to support the belt deflection adjustment roller; wherein, when the electromagnetic reversing valve operates, the telescopic movement of the piston rod drives the deflection adjustment bearing to move, Thus, the belt deflection adjustment roller is driven to adjust the deflection direction.

Preferably, the bottom of the one end of the scale frame is hinged to the base, and the bottom of the other end of the scale frame is supported by a load cell.

In addition, the present invention also provides a method for conveying shavings using the above-mentioned shavings conveying and metering equipment, which includes the following steps in sequence:

Make the shavings enter the silo from the feed port of the silo;

The shavings entering the silo from the feed port are conveyed by the first conveyor belt;

The shavings conveyed by the first conveyor belt are evenly spread on the second conveyor belt by the brush blanking roller of the blanking roller device;

The shavings are transported via the second conveyor belt, wherein

Through the scale body structure of the self-balancing metering device, the scale frame and the counterweight of the scale body structure are in a balanced state, so as to weigh the weight of the shavings conveyed on the second conveyor belt.

Compared with the prior art, the shavings conveying metering device and the method for conveying shavings of the present invention have the following advantages:

1) The shavings conveying metering equipment of the present invention, its brush unloading roller can absorb shavings, therefore, increase the area that shavings are sowed on the second conveyer belt, sow effect is good, and avoid the brush unloading roller and the first conveyer belt If there is a small gap between the conveyor belt and the unloading roller, the phenomenon of jamming occurs, so as to ensure the normal and reliable operation of the equipment and make the flow of shavings uniform and stable;

2) The self-balancing metering device of the present invention has a scale body structure that uses the principle of leverage to automatically balance, so that the load cell can directly detect the weight of the shavings transported by the second conveyor belt, the measurement accuracy is high, and it is convenient for the delivery flow rate of the shavings for precise control;

3) The material rake device of the present invention has a material rake support that can be adjusted synchronously with the inclination angle of the first conveyor belt, so that the height of a plurality of material rakes installed on it can be adjusted synchronously relative to the first conveyor belt, avoiding In the prior art, the heights of multiple rakes cannot be adjusted synchronously. Therefore, the shavings are easy to pass through the gaps between adjacent rakes, so that the thickness of the shavings on the first conveyor belt is uneven, which affects the quality of the shavings after sizing;

4) The material rake device of the present invention has a material rake fine-tuning mechanism, which can slightly adjust the position of its corresponding material rake relative to the material rake support, so that the height of the material rake matches the inclination angle of the material rake support. It is enough to open a through hole extending in the vertical direction on the side plate of the warehouse, which is convenient for the processing of the through hole and the installation of the material rake, and can prevent the material rake passing through the through hole from shaking in the through hole and affecting the shavings on the first conveyor belt. uniformity;

5) The equipment of the present invention has a belt deviation adjustment device, which adjusts the deviation direction of the second conveyor belt by detecting the deviation direction of the belt, which is beneficial to the stable and uniform transportation of the shavings, thereby facilitating the continuous and stable production of the particleboard production line.

The present invention will be described in detail below in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is the perspective view of shavings conveying metering equipment of the present invention;

Fig. 2 is the front view of the shavings conveying metering device shown in Fig. 1;

Fig. 3 is the A-A direction view shown in Fig. 2;

Fig. 4 is the rear view of the shavings conveying metering device shown in Fig. 1;

Fig. 5 is the schematic diagram of scale body structure of the present invention;

Fig. 6 is a structural schematic diagram of the rake fine-tuning mechanism of the present invention;

Figure 7 is an enlarged view of part B shown in Figure 4;

Fig. 8 is a schematic diagram of the control process of the belt deviation adjustment device of the present invention;

Fig. 9 is a schematic structural view of the second conveyor belt part of the present invention;

Fig. 10 is a schematic diagram of the control principle of the shavings conveying metering equipment of the present invention;

Fig. 11 is a schematic diagram of the belt deviation adjusting device adjusting the deviation direction of the first conveying belt.

detailed description

As shown in Figure 1, it is a perspective view of the shavings conveying metering equipment provided by the present invention (the part above the second conveyer belt 9 is not shown), and Fig. 2, Fig. 3, and Fig. 4 show that the shavings are respectively Front view, A-A sectional view of the front view, and rear view of the conveying metering equipment.

As can be seen from Fig. 1-Fig. 3, the shavings conveying and metering equipment of the present invention comprises: a base for placing the silo, having a first base 25 and a second base 26; the silo 1 arranged above the base has an inlet Feed port 24, the other end of which is provided with discharge port 6; conveying device has a first conveyor belt 13 and a second conveyor belt 9 which are parallel up and down and continue to be arranged inside the feed bin along the moving direction, for relaying the shavings from the material The feed port 24 of the storehouse is delivered to the discharge port 6, wherein the feed end of the second conveyor belt 9 is positioned below the discharge end of the first conveyor belt 13, and the discharge end extends away from the first conveyor belt 13 direction (as Figure 1, Figure 2).

In addition, the shavings conveying and metering equipment of the present invention also includes: a discharge roller device, which has a brush discharge roller arranged at the discharge end of the first conveyor belt, with an adjustable gap between the brush discharge roller and the first conveyor belt The self-balancing metering device is installed under the second conveyor belt and has a self-balancing scale structure for weighing the weight of the shavings on the second conveyor belt; wherein, the brush unloading roller is used for absorbing and spreading the shavings, In order to evenly spread the shavings conveyed by the first conveyor belt on the second conveyor belt; wherein, the scale body structure includes a scale frame and a counterweight connected to one end of the scale frame, and the scale frame and the counterweight are in a balanced state.

Specifically, as shown in Fig. 2 and Fig. 7, the unloading roller device has a brush unloading roller 4 arranged at the discharge end of the first conveyor belt 13 and the feed end of the second conveyor belt 9, and the brush unloading roller 4 is connected to the feed end of the second conveyor belt 9. The gap between the first conveyor belts 13 is adjustable. The brush unloading roller 4 includes a roller and a brush body arranged on the outer wall of the roller. The brush body can absorb and spread shavings so that the shavings will enter the feed bin from the feed port 24 and fall on the first conveyor belt 13 for feeding. The shavings at the end are transported to its discharge end by the first conveyor belt 13, and are evenly spread on the feed end of the second conveyor belt 9 by the brush unloading roller, thereby being transported to the silo by the second conveyor belt 9. Outlet 6.

And as shown in Figure 7, the blanking roller bearing 21 is installed at the two ends of the brush blanking roller 4, and the blanking roller bearing 21 is installed on the blanking roller slide block 23. The blanking roller slider 23 can slide up and down on the blanking roller bracket 20, and the blanking roller slider 23 can be fixed on the blanking roller bracket 20 by the blanking roller pull rod. Through this structure, the gap between the brush unloading roller 4 and the first conveyor belt 13 can be adjusted conveniently, so as to adapt to spreading shavings of different thicknesses on the first conveyor belt.

The brush body of the brush unloading roller of the present invention is composed of several bristles, and the shavings can be evenly adhered to the bristles. At the same time, because there are gaps between adjacent bristles, the shavings can be temporarily clamped by the adjacent bristles, so that The brush feed roller exhibits the function of temporarily picking up the shavings. With the rotation of the brush unloading roller, the shavings sticking to the bristles and temporarily clamped by the bristles evenly fall on the feeding end of the second conveyor belt under the action of gravity, so that the brush unloading roller realizes the first The shavings on the first conveyor belt are evenly spread on the second conveyor belt. Due to the fact that the brush body has a certain adsorption effect during the rotation of the brush blanking roller, the following problems generated when the prior art adopts the licker-in roller as the blanking roller are solved: the roller on the prior art licker-in roller The needles are all hard steel bars, so when the gap between the licker-in roller and the first conveyor belt is too small, it will cause the first conveyor belt and the licker-in roller to be stuck, and when the gap between the licker-in roller and the first conveyor belt If it is too large, the shavings spread to the second conveyer belt by the licker-in roller will be uneven, so that the spreading effect will be poor, which will affect the sizing quality of the shavings in the subsequent sizing.

Among them, the self-balancing metering device is installed below the second conveyor belt 9, and has a self-balancing scale structure utilizing the principle of leverage. The counterweight 27 connected together, the weighing belt roller 5 for supporting the second conveyor belt 9 is installed on the scale frame, and the motor driving the weighing belt roller movement is also installed on the scale frame. Wherein, the bottom of one end of the scale frame 8 is hinged with the second base 26 in the base, and the bottom of the other end of the scale frame 8 is supported by the load cell 7 (as shown in Figures 2 and 7). During design, the scale frame should be designed reasonably 8 and the weight and moment of the counterweight 27, so that after the counterweight is installed on the scale frame and forms the scale body structure, the scale body structure can be in an automatic balance state on the second base 26. Therefore, when the shavings are conveyed on the second conveyor belt 9, the weight change detected by the load cell is the weight of the shavings. Therefore, the measurement accuracy is high, and it is convenient to accurately calculate the conveying flow rate of the shavings on the second conveyor belt, thereby solving the problem of In the follow-up sizing process, the problem of poor sizing quality caused by the measurement error of the shavings conveying flow in the prior art is solved.

Further, the shavings conveying and metering equipment of the present invention also includes: a material rake device, having a plurality of material rakes 2 (as shown in FIG. The height relative to the first conveyor belt decreases successively from its feed end to the discharge end, so that the shavings conveyed by the first conveyor belt can be broken up and leveled step by step; The height can be adjusted synchronously, and the synchronous adjustment of the heights of multiple rakes is realized through the rake support and the rake lifting adjustment mechanism.

Specifically, as shown in Figure 1 and Figure 2, in addition to multiple rakes, the rake device also has a pair of rake brackets 3 and a pair of rake lifting and adjusting mechanisms.

Wherein, a pair of rake brackets 3 are respectively arranged on the outer walls of the two side plates of the bin 1, and one end of each rake bracket 3 is hinged with the bin bracket 15 installed on one end of the side plate, and the two ends of a plurality of rakes 2 They are respectively placed on and supported by a pair of material rake supports 3 .

A pair of material rake lifting and adjusting mechanisms are respectively installed on the other end of the two side plates of the silo, and are connected with the other end of the corresponding material rake support 3, for adjusting the inclination angle of the material rake support 3 relative to the first conveyor belt 13, and The heights of multiple rakes relative to the first conveyor belt 13 can be adjusted as the angle of the rake support 3 is adjusted.

Because the material rake device has a material rake support and a material rake lifting adjustment mechanism, the height of multiple material rakes installed on the material rake support relative to the first conveyor belt can be adjusted synchronously to ensure that the thickness of the shavings on the first conveyor belt is ideal. Within the range, the following problems caused by the synchronous adjustment of the heights of multiple rakes in the prior art are avoided: when the height of one or more rakes is adjusted separately, the height changes of multiple rakes cannot be coordinated, which will cause the shavings to flow from adjacent The material rake passes through the gap, so that the thickness of the shavings conveyed by the first conveyor belt is uneven, which affects the quality of the shavings after sizing.

Wherein, the material rake lifting adjustment mechanism includes: a bracket, located at the other end of the side plate of the silo, with a column 19 installed on the first base and a horizontal plate 35 vertically connected to the top of the column; a screw 18, vertically installed on the horizontal plate , its extension direction is parallel to the extension direction of the column and the top end protrudes from the cross plate 35; the adjusting nut 36 cooperates with the threaded part of the screw rod 18 above the cross plate to adjust the distance between the bottom end of the screw rod and the cross plate; , The other end of the material rake support 3 is hinged with the bottom end of the screw rod 18 . When it is necessary to adjust the angle of the rake bracket, loosen the adjusting nut to change the distance between the bottom end of the screw and the horizontal plate, so that the rake bracket moves with the movement of the screw, and then changes the angle of the rake bracket relative to the first conveyor belt. Tilt the angle, and then tighten the adjusting nut to keep the current distance between the bottom end of the screw and the horizontal plate.

Further, the material rake device of the present invention also has multiple pairs of material rake fine-tuning mechanisms, and each pair of material rake fine-adjustment mechanisms is correspondingly arranged at both ends of a material rake 2, and is used for micro-adjusting the position of the corresponding material rake 2 relative to the material rake support .

Preferably, as shown in FIG. 6, each rake fine-tuning mechanism includes: a slider 17, which is slidably arranged on the upper end surface of the rake bracket 3; fastening bolts 28, used to fasten the slider 17 on the rake bracket; Wherein, the rake bearing 16 for supporting the rake 2 is fixedly installed on the slider 17, and the central axis of the rake bearing is perpendicular to the extending direction of the rake support.

As shown in Figure 6, an L-shaped fixed block 29 is fixedly arranged on the upper surface of the rake support 3, and the slider 17 is also L-shaped. The slider 17 is installed on the fixed block 29, and the vertical plate of the fixed block and the slider The vertical plates of the block are parallel, and a limit bolt 27 is pierced on the vertical plate of the fixed block. The position in the direction of length extension.

The material rake device of the present invention has a material rake fine-tuning mechanism, so the position of the material rake relative to the material rake support can be adjusted in a small amount, so that the height of the material rake matches the inclination angle of the material rake support. A vertically extending through hole is enough, which is convenient for the processing of the through hole and the installation of the rake, and can prevent the rake passing through the through hole from shaking in the through hole, which affects the uniformity of the shavings on the first conveyor belt.

Furthermore, the shavings conveying and metering equipment of the present invention also includes a belt deviation adjustment device for preventing the deviation of the first conveyor belt 13 and the second conveyor belt 9 respectively, and a belt deviation adjustment device for preventing the deviation of the first conveyor belt 13. The structure of the device is the same as that of the belt deviation adjustment device for preventing the deviation of the second conveyor belt 9, and the belt deviation adjustment device for preventing the deviation of the first conveyor belt is used as an example for introduction here.

As shown in FIG. 9 , the first conveyor belt 13 is driven by a conveyor belt roller 14 , supported by an idler roller 11 (not shown in FIG. 9 ), and tensioned by a tension roller 10 . Since the conveying distance of the first conveying belt 13 is relatively long, in order to prevent the first conveying belt from deviating during operation, a belt deviation adjustment device is provided.

Wherein, as shown in Figure 8 and Figure 9, the belt deviation adjustment device includes: a position sensor 30, which is arranged near the first conveyor belt 13, and is used to detect the deviation direction of the first conveyor belt 13 and transmit the deviation signal to the control system, so that the control system generates a corresponding deviation adjustment command; the transmission mechanism is connected with the control system, and it performs a corresponding deviation adjustment action according to the deviation adjustment command of the control system; the belt deviation adjustment roller 12 is located under the first conveyor belt, respectively The transmission mechanism is connected with the first conveyor belt 13, driven by the transmission mechanism, the state when the first conveyor belt 13 deviates from its set running direction is adjusted, so that the first conveyor belt can transport shavings along the set running direction.

Preferably, the transmission mechanism includes: an electromagnetic reversing valve 31, which is connected to the control system; a cylinder or a hydraulic cylinder 32 connected to the electromagnetic reversing valve, whose piston rod protrudes in a direction perpendicular to the axial direction of the belt deflection roller 12, and the piston The extended end of the rod is hinged with the deflection adjustment bearing 33 used to support the belt deflection adjustment roller; wherein, when the electromagnetic reversing valve operates, the telescopic movement of the piston rod drives the deflection adjustment bearing to perform fine-adjustment of the position in the corresponding bearing seat , so that the belt deflection adjustment roller 12 connected with the deflection adjustment bearing is fine-tuned in position.

For example, assuming that the set running direction V of the first conveyor belt 13 is shown in the direction of the arrow in Figure 11 (that is, the direction from left to right along the horizontal direction), when the first conveyor belt deviates from the set running direction, toward When the set running direction is shifted to the left (i.e. toward the bottom as shown in Figure 11), the piston rod of the air cylinder or hydraulic cylinder located on the left side of the set running direction of the first conveyor belt will retract to pull the belt The left end of the deviation adjustment roller, and the piston rod of the air cylinder or hydraulic cylinder located on the right side of the set running direction of the first conveyor belt will be extended to push the right end of the belt deviation adjustment roller, that is, the belt deviation adjustment roller will rotate counterclockwise At the same time, the tension roller 10 cooperates with the action of the belt deflection roller, and deviates toward the direction of the first conveyor belt slack, so as to tension the slack part of the first conveyor belt, thereby passing the belt deflection roller and the The tension rollers work together to adjust the running direction of the first conveyor belt to the set running direction.

Wherein, the belt deviation adjusting device of the present invention can also adopt the structure of adjusting the deviation of the conveying belt in the prior art.

In addition, the shavings conveying and metering device of the present invention also includes a control system, which can control the flow of shavings entering the bin by detecting the signal detected by the material level sensor, and can detect the flow of shavings conveyed by the second conveyor belt online.

In addition, the present invention also provides a method for conveying shavings by using the above-mentioned shavings conveying and metering equipment, the method includes the following steps:

The shavings enter the bin from the feed port, and the shavings are relay-transported from the feed port to the discharge port by using the first conveyor belt and the second conveyor belt;

Wherein, in the process of utilizing the first conveyor belt to convey the shavings, the brush unloading roller arranged on the discharge end of the first conveyor belt through the unloading roller device absorbs and spreads the shavings, so that the shavings conveyed by the first conveyor belt Evenly spread on the second conveyor belt;

Wherein, in the process of using the second conveyor belt to transport the shavings, the weight of the shavings transported on the second conveyor belt is weighed through the self-balancing scale structure installed under the second conveyor belt of the self-balancing metering device;

Wherein, when weighing the wood shavings, the scale frame and the counterweight of the scale body structure are in a balanced state.

Wherein, in the process of using the first conveyor belt to convey the shavings, the height of the multiple rakes relative to the first conveyor belt is adjusted synchronously so that the thickness of the shavings conveyed to the discharge end of the first conveyor belt is uniform, and the multiple rakes pass through The following steps synchronously adjust their height relative to the first conveyor belt: by adjusting the inclination angle of the rake support relative to the first conveyor belt, so as to adjust the height of each rake relative to the first conveyor belt.

Next, with reference to FIG. 10 and the structure of the shavings conveying and metering device of the present invention, the process of conveying shavings by the shavings conveying and metering device of the present invention will be described.

First of all, the shavings enter the bin 1 from the feed port 24 and accumulate on the first conveyor belt 13. The first conveyor belt 13 runs under the drive of the conveyor belt roller 14, and the multiple material rakes 2 distributed in stages pile up on the first conveyor belt 13. The shavings on the first conveyor belt 13 are scattered and leveled, so that the shavings are evenly distributed on the first conveyor belt 13 with a certain thickness (100mm-200mm).

In the process of using the first conveyor belt to transport the shavings, by adjusting the inclination angle of the rake support relative to the first conveyor belt, the purpose of synchronously adjusting the height of each rake relative to the first conveyor belt is achieved, so that in the common Under the action, the thickness of the shavings conveyed on the first conveyor belt is uniform; and the shavings are absorbed and spread by the brush unloading roller, and the shavings at the discharge end of the first conveyor belt are evenly spread on the feed end of the second conveyor belt; at the same time , by adjusting the distance of the brush unloading roller relative to the first conveyor belt, the thickness of the shavings on the first conveyor belt being spread to the second conveyor belt is controlled. And when the shavings enter the silo from the feed port, a plurality of material level sensors 34 arranged in the silo detect the material level signal of the shavings on the first conveyor belt in the silo at any time, and transmit it to the control system, thereby passing The control system controls the flow of shavings conveyed to the feed port of the shavings conveying metering device by the previous process.

When the shavings on the first conveyor belt are continuously spread onto the second conveyor belt 9 by the brush unloading roller, and are transported to the discharge port 6 by the second conveyor belt, the speed sensor arranged near the first conveyor belt Detect the running speed of the first conveyor belt, and transmit the detected speed signal to the control system, and the load cell of the scale body structure located under the second conveyor belt detects the speed from the feed end to the second conveyor belt 9 at any time. The weight of the shavings at the discharge end, and the detected weight signal of the shavings is sent to the control system; at the same time, the speed sensor installed near the second conveyor belt detects the running speed of the second conveyor belt, and the detected speed The signal is transmitted to the control system, and the control system passes through the frequency converter according to the weight signal of the shavings detected by the load cell, the running speed signal of the second conveyor belt detected by the speed sensor, and the material level signal of the shavings detected by the material level sensor 34. Adjust the running speed of the first conveyor belt and the second conveyor belt (that is, adjust the rotating speed of the first conveyor belt motor and the second conveyor belt motor respectively, so as to realize the adjustment of the running speed of the first conveyor belt and the second conveyor belt ), so that the belt speed of the first conveyor belt changes proportionally with the belt speed of the second conveyor belt, so as to achieve the purpose of controlling the flow rate of the shavings output at the outlet of the shavings conveying metering device.

Among them, the control system detects the weight of the shavings on the second conveyor belt through the load cell, and according to the belt running speed of the second conveyor belt and the distance of the shavings running on the second conveyor belt, it can measure and calculate the weight of the shavings conveyed by the second conveyor belt. The flow rate of the shavings (that is, the flow rate of the shavings output at the outlet of the equipment), so as to achieve the purpose of online detection of the shavings flow; and, according to the demand for the shavings flow in the subsequent sizing process, control the running speed of the second conveyor belt; in addition , the flow of shavings entering the silo is also controlled by the material level signal detected by the material level sensor.

Wherein, the material level sensor adopted in the present invention can adopt capacitive proximity switch, also can adopt anti-rotation material level meter, can also adopt weighing sensor, it detects the shavings amount signal in the silo, thereby controls the feed from the silo. The flow rate of the shavings entering the feed port; the speed sensor of the present invention can use a photoelectric encoder or a photoelectric position switch. And the control system of the present invention can adopt industrial computer, also can adopt programmable logic controller (PLC), can also adopt embedded control system or distributed control system, control the operation of each corresponding motor by detecting the signal that each sensor detects Operating speed, so as to achieve the purpose of controlling the flow of shavings entering the feed port of the silo and the flow of shavings output from the discharge port of the silo.

Although the present invention has been described in detail above, the present invention is not limited thereto, those skilled in the art can make modifications according to the principle of the present invention, therefore, all various modifications carried out according to the principle of the present invention should be understood as into the protection scope of the present invention.

Claims (10)

1. A shavings conveying metering device, comprising: A base for placing the silo; The silo set above the base has a material inlet at one end and a material outlet at the other end; The conveying device has a first conveyor belt and a second conveyor belt arranged inside the silo in parallel up and down along the moving direction, and is used to convey the shavings from the inlet to the outlet in relay mode, It is characterized in that it also includes: The blanking roller device has a brush blanking roller arranged at the discharge end of the first conveyor belt, and there is an adjustable gap between the brush blanking roller and the first conveyor belt; A self-balancing metering device, installed below the second conveyor belt, has a self-balancing scale structure for weighing the weight of the shavings on the second conveyor belt; Wherein, the brush unloading roller is used for absorbing and spreading shavings, so that the shavings transported by the first conveyor belt are evenly spread on the second conveyor belt; Wherein, the scale body structure includes a scale frame and a counterweight connected to one end of the scale frame, and the scale frame and the counterweight are in a balanced state. 2. The device according to claim 1, further comprising: A material rake device, having a plurality of material rakes located above the first conveyor belt and distributed in steps along its traveling direction; Wherein, in the process of using the first conveyor belt to convey the shavings, the height of the plurality of rakes relative to the first conveyor belt is adjusted synchronously so that the thickness of the shavings conveyed to the discharge end of the first conveyor belt uniform. 3. equipment according to claim 2, is characterized in that, described material rake device also has: A pair of rake brackets are respectively arranged on the outer walls of the two side plates of the silo, and one end of each rake bracket is hinged to one end of the side plate; A pair of rake lifting and adjusting mechanisms are respectively installed on the other end of the two side plates of the silo, and connected to the other end of the corresponding rake bracket, for adjusting the inclination angle of the rake bracket relative to the first conveyor belt; Wherein, the two ends of each rake are respectively supported by the rake bracket; Wherein, the heights of the plurality of rakes relative to the first conveyor belt are synchronously adjusted through the following steps: Adjusting the inclination angle of the rake support relative to the first conveyor belt, so as to adjust the height of each rake relative to the first conveyor belt. 4. The equipment according to claim 3, characterized in that, the rake lifting adjustment mechanism comprises: The bracket is installed at the other end of the corresponding side plate of the silo, and has a horizontal plate vertically connected with the side plate of the silo; The screw rod is installed on the horizontal plate, and its top end protrudes from the horizontal plate; The adjusting nut is threadedly matched with the part of the screw rod above the horizontal plate, and the inclination angle of the adjusting material rake support relative to the first conveyor belt is realized by adjusting the screw rod; Wherein, the other end of the rake support is hinged to the bottom end of the screw. 5. equipment according to claim 3, is characterized in that, described material rake device also has: The rake fine-tuning mechanism is correspondingly arranged at both ends of the corresponding rake, and is used to adjust the position of the rake relative to the rake support. 6. The device according to claim 5, wherein the rake fine-tuning mechanism comprises: The slider is slidably arranged on the upper end surface of the rake support; Bolts are used to fasten the slide block on the rake bracket; Wherein, the rake bearing used to support the rake is fixedly installed on the slider. 7. The equipment according to claim 1, further comprising a belt deviation adjusting device for preventing deviation of the first conveyor belt and the second conveyor belt respectively. 8. The device according to claim 7, wherein the belt deviation adjustment device comprises: A position sensor, arranged near the first conveyor belt or the second conveyor belt, is used to detect the deviation direction of the first conveyor belt or the second conveyor belt and transmit the generated deviation signal to the control system , so that the control system can generate corresponding deviation adjustment instructions; The transmission mechanism is connected with the control system, and it executes corresponding deviation adjustment actions according to the deviation adjustment instructions of the control system; The belt deflection adjustment roller is respectively connected with the transmission mechanism and the first conveyor belt or the second conveyor belt, and is driven by the transmission mechanism to adjust the deviation direction of the first conveyor belt or the second conveyor belt . 9. The device according to claim 8, wherein the transmission mechanism comprises: An electromagnetic reversing valve, connected with the control system; The cylinder or hydraulic cylinder connected with the electromagnetic reversing valve, the piston rod protruding direction is perpendicular to the axial direction of the belt deflecting roller, and the protruding end of the piston rod is connected with the deflecting bearing used to support the belt deflecting roller hinged; Wherein, when the electromagnetic reversing valve operates, the telescopic movement of the piston rod drives the deflection adjustment bearing to move, thereby driving the belt deflection adjustment roller to adjust the deflection direction. 10. A method for conveying shavings using the shavings conveying and metering device according to claims 1 to 9, characterized in that the method comprises the following steps in sequence: Make the shavings enter the silo from the feed port of the silo; The shavings entering the silo from the feed port are conveyed by the first conveyor belt; The shavings conveyed by the first conveyor belt are evenly spread on the second conveyor belt by the brush blanking roller of the blanking roller device; The shavings are transported via the second conveyor belt, wherein Through the scale body structure of the self-balancing metering device, the scale frame and the counterweight of the scale body structure are in a balanced state, so as to weigh the weight of the shavings conveyed on the second conveyor belt.