CN105840522A - Slurry pump for building construction - Google Patents

Abstract

The invention introduces a slurry pump for building construction, which includes a pump body, the inside of the pump body along the longitudinal direction and the outside of the longitudinal direction are arc-shaped, and the upper end of the pump body and the There are openings at the lower end, and an impeller is installed in the pump body. There is a protrusion in the middle of the impeller. A slurry delivery channel, the slurry delivery channel has openings at both ends of the impeller, and a transverse feed inlet is provided on the right side of the pump body, the feed inlet is directly opposite to the protrusion on the impeller, and the feed inlet The feed port communicates with the slurry channel on the impeller, and there is a connection hole on the left side of the pump body. The connection head on the left side of the impeller is snapped into the connection hole, and the transmission shaft passes through the connection hole from the left. After the hole, it is fixedly connected with the impeller. The invention improves the flow rate of the pump, reduces the vibration and noise when the equipment is in operation, reduces the friction and reduces the failure rate of the equipment at the same time.

Description

A slurry pump for building construction

technical field

The invention relates to a construction tool, in particular to a slurry pump used for construction, and belongs to the technical field of construction engineering.

Background technique

The power consumption of water pumps accounts for a large proportion of the country's total electricity. The energy saving of water pumps has an important impact on the national economy. Water pumps not only play an active role in energy saving, but also play an important role in the process of thermal power generation emission reduction. In addition to pumping water, the water pump can also pump gas, solid, and solid-liquid mixture, so the slurry pump came into being.

Slurry pump refers to the pump that contains suspended solids in the conveying liquid (water). It is a kind of centrifugal pump in terms of working principle. Conceptually speaking, it refers to the centrifugal force (rotation of the pump impeller). A mechanical device that increases the energy of a solid-liquid mixed medium and converts electrical energy into kinetic energy and potential energy of the medium. At present, the slurry pump is mainly used in mining, power plant, bridge construction, metallurgy, chemical industry, building materials and petroleum and other industries. Slurry pumps can also be divided into different types from different angles, for example: from the number of impellers: single-stage slurry pumps and multi-stage slurry pumps; from the position of the pump shaft and the horizontal plane: horizontal slurry pumps and vertical slurry pumps Pump; from the way of suction and water intake: single suction slurry pump and double suction slurry pump; from the structure of the pump casing: single shell slurry pump and double shell slurry pump. The slurry pump not only saves energy by 4%-8% compared with similar products, but also contributes to the escape of the atmosphere from the "magic claws" of smog. It is currently one of the important equipment in various processes of mineral processing and coal preparation plants. The basic structure of the current slurry pump is composed of impeller, pump casing, pump shaft, bearing and bracket. Prompt the medium to rotate quickly, and the rotating medium flies out of the impeller under the action of centrifugal force. After the medium in the pump is thrown out, the central part of the impeller forms a vacuum area, and the medium is under the action of atmospheric pressure (or water pressure). It is pressed into the feed pipe through the pipe network, so that the circulation is endless, and continuous feeding can be realized, so as to achieve the head and flow required by the process design. However, due to the old-fashioned design of the current slurry pump, the problem of insufficient pump flow often occurs, accompanied by packing leakage, and the noise during operation is also relatively large, which also leads to a short service life of the equipment. Maintenance costs are higher.

Contents of the invention

Aiming at the above-mentioned deficiencies in the prior art, the main purpose of the present invention is to solve the current problems of the slurry pump due to the aging of the structural design, resulting in insufficient pump flow and relatively high working noise, and to provide a method that can obtain a larger It is a slurry pump for building construction with high pump flow rate, good sealing performance and low working noise.

The technical solution of the present invention: a slurry pump for building construction, characterized in that it includes a pump body, the inner side of the pump body along the longitudinal direction and the outer side along the longitudinal direction are arc-shaped, and the pump body The upper end and the lower end of the pump body are provided with openings, and an impeller is installed in the pump body. The openings are flush; a slurry delivery channel is provided in the impeller, and the slurry delivery channel forms openings at both ends of the impeller, and a horizontal feed port is provided on the right side of the pump body, and the feed port is connected to the pump body. The protrusions on the impeller are facing each other, the feed port is in communication with the slurry delivery channel on the impeller, and there is a connection hole on the left side of the pump body, and the connector on the left side of the impeller is snapped into the connection hole , the transmission shaft passes through the connecting hole from the left side and is fixedly connected with the impeller; an upper pump cover is installed on the upper end of the pump body, and a lower pump cover is installed on the lower end of the pump body, and the upper pump cover is formed by the left upper pump cover It is composed of the upper right pump cover, the upper left pump cover is fixed to the pump body by the first bolt, the upper right pump cover is fixed to the pump body by the second bolt, and an outlet gasket is installed between the upper left pump cover and the upper right pump cover. The pump cover is composed of the lower left pump cover and the lower right pump cover. The lower left pump cover and the lower right pump cover are connected and fixed by the pump body studs; The diameter of the inner cavity of the inlet is equal to that of the feed port. The inner upper end of the short inlet pipe is fixed to the upper right pump cover by the third bolt. There is also an annular convex edge on the outer edge of the short inlet pipe. There is a first positioning hole on the pump body; a discharge port is also provided on the rear side of the pump body along the longitudinal direction, and the opening of the discharge port is set along the vertical direction, and the slurry delivery channel of the impeller is connected to the The discharge port is connected, and a short outlet pipe is installed on the discharge port. The inner diameter of the short outlet pipe is equal to the inner diameter of the discharge port. The right side of the short outlet pipe is fixedly connected with the pump body through the fourth bolt. The left side of the front end of the pipe is fixedly connected with the left upper pump cover through the left lifting eye screw, and the front right side of the outlet short pipe is fixedly connected with the right upper pump cover through the right lifting ring screw; A lower sheath is installed on the inner side of the cover, both of the upper sheath and the lower sheath are of hemispherical structure, the upper sheath is fixed at the upper opening of the pump body, and the lower sheath is fixed at the lower opening of the pump body. A first O-ring is provided between the upper sheath and the pump body, and a second O-ring is provided between the lower sheath and the pump body; a disk-shaped stuffing box is set on the transmission shaft, and the The right side of the stuffing box is provided with a groove, the upper end of the stuffing box is clamped between the left upper pump cover and the pump body, the lower end of the stuffing box is clamped between the left lower pump cover and the pump body, and the stuffing box and the pump body are connected together. There is also a shaft sleeve between the transmission shafts, the shaft sleeve is keyed to the transmission shaft, a stuffing cavity is formed between the stuffing box and the shaft sleeve, a packing gland is set on the left side of the shaft sleeve, and a packing gland is placed on the right side There is a water seal ring, the packing gland is sealed and connected to the left side of the packing cavity, the lower end of the packing gland is fixed with the stuffing box by the fifth bolt, and the water seal ring is sealed and connected to the rear side of the packing cavity. A stuffing pipe is also installed on the box, and the stuffing pipe is connected with the water seal The transmission shaft is also covered with a rear guard plate, which is arranged between the stuffing box and the pump body, and the left side of the rear guard plate is sealed with the shaft sleeve by the third O-ring connection, the right side of the rear guard plate is sealed and connected with the impeller through the fourth O-ring; a bracket is set in the middle of the transmission shaft, and both ends of the bracket are connected with the transmission shaft through bearings. The right side of the bracket is fixedly connected with the lower left pump cover through the sixth bolt, the lower end of the bracket is fixed on the base, and a rolling bearing is installed between the bracket and the bushing; on the transmission shaft on the left side of the bracket An elastic coupling is also covered, and the elastic coupling is keyed to the transmission shaft, and a second positioning hole is provided outside the elastic coupling.

Optimally, an inlet pad is also provided between the feed inlet and the short inlet pipe. By installing the inlet gasket, the friction between the feed inlet of the pump body and the inlet short pipe can be reduced during installation, and the noise of metal collision during operation can also be reduced.

Optimally, a limit block is placed in the middle of the stud of the pump body, and the limit block extends into the inner side of the lower pump cover and contacts with the limit protrusion at the bottom of the lower sheath. Here, by installing a limit block, the lower sheath can be limited to prevent deflection and displacement caused by too much impact force when it is working.

Optimally, a protective plate is installed on the top of the bracket. The top of the bracket can be effectively protected by the protection plate to reduce abrasion.

Preferably, an anti-skid plate is fixed on the right side of the bracket, the lower end of the anti-skid plate is clamped on the clamping plate, the clamping plate is sleeved on the transmission shaft, and the right side of the clamping plate is pressed against the rolling bearing . In the present invention, the anti-skid plate can play a buffering role between the bracket and the shaft sleeve, and at the same time prevent the bracket from rotating due to too much rotational inertia.

Compared with the prior art, the present invention has the following beneficial effects:

1. Increased pump flow rate: The slurry pump of the present invention optimizes the internal pipeline. On the one hand, it adopts a smaller conveying height and increases the pump flow rate by reducing the resistance in the pipe. On the other hand, it adopts the shaft and the feeding box The coaxial center design improves the installation accuracy and better sealing performance, and also avoids the leakage of packing.

2. Reduce the vibration and noise when the equipment is working: Since the structure of the impeller is more balanced and the clearance of the bearing is reduced, the air intake is more uniform, thereby reducing the vibration and noise of the equipment.

3. The friction is reduced, the failure rate of the equipment is reduced, the service life of the equipment is prolonged, and the maintenance cost of the equipment is also reduced.

Description of drawings

Fig. 1 is a schematic structural view of a slurry pump used in building construction according to the present invention.

detailed description

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, a slurry pump for building construction includes a pump body 1, the inner side of the pump body 1 along the longitudinal direction and the outer side along the longitudinal direction are arc-shaped, and the upper end of the pump body 1 and the lower end of the pump body 1 are provided with openings, and an impeller 2 is installed in the pump body 1, and a protrusion 3 is provided in the middle of the impeller 2, and the upper end of the impeller 2 is flush with the opening of the upper end of the pump body 1, and the impeller The lower end of 2 is flush with the opening of the lower end of the pump body 1; a slurry delivery channel 4 is arranged in the impeller 2, and the slurry delivery channel 4 forms openings at both ends of the impeller 2, on the right side of the pump body 1 A horizontal feeding port 5 is provided, and the feeding port 5 is directly opposite to the protrusion 3 on the impeller 2, and the feeding port 5 communicates with the slurry delivery channel 4 on the impeller 2. The left side is provided with a connection hole 6, the connection head 7 on the left side of the impeller 2 is clamped at the connection hole 6, and the transmission shaft 8 is fixedly connected with the impeller 2 after passing through the connection hole 6 from the left side; The upper end of 1 is equipped with an upper pump cover, and the lower end of the pump body 1 is equipped with a lower pump cover. The upper pump cover is composed of a left upper pump cover 9 and a right upper pump cover 10. The left upper pump cover 9 passes through the first bolt 11 It is fixed with the pump body 1, and the upper right pump cover 10 is fixed with the pump body 1 through the second bolt 12. An outlet pad 13 is installed between the upper left pump cover 9 and the upper right pump cover 10, and the lower pump cover is made of the lower left pump cover 14 Composed of the lower right pump cover 15, the lower left pump cover 14 and the lower right pump cover 15 are connected and fixed by the pump body stud 16; the inlet short pipe 17 is also installed on the feed port 5, and the inlet short pipe The inner cavity diameter of 17 is equal to the inner cavity diameter of the feeding port 5, the inner upper end of the inlet short pipe 17 is fixed with the upper right pump cover 10 by the third bolt 18, and an annular convex edge 19 is also provided on the outer edge of the inlet short pipe 17 A first positioning hole 20 is provided on the annular convex edge 19; a discharge port 21 is also provided on the rear side of the pump body 1 along the longitudinal direction, and the opening of the discharge port 21 is arranged along the vertical direction, The slurry channel 4 of the impeller 2 is connected with the discharge port 21 after the impeller 2 rotates, and the outlet short pipe 22 is installed on the discharge port 21, and the inner diameter of the outlet short pipe 22 is equal to the inner diameter of the discharge port 21 , the right side of the short outlet pipe 22 is fixedly connected with the pump body 1 through the fourth bolt 23, the left side of the front end of the short outlet pipe 22 is fixedly connected with the upper left pump cover 9 through the left eyebolt screw 24, and the front end of the short outlet pipe 22 is on the right side. The side is fixedly connected with the upper right pump cover 10 through the right lifting eye screw 25; an upper sheath 26 is also installed on the inner side of the upper pump cover, and a lower sheath 27 is installed on the inner side of the lower pump cover, and the upper sheath 26 and the lower sheath 27 are hemispherical structures, the upper sheath 26 is fixed on the upper opening of the pump body 1, the lower sheath 27 is fixed on the lower opening of the pump body 1, and between the upper sheath 26 and the pump body 1 is provided The first O-ring 28 is provided with a second O-ring 29 between the lower sheath 27 and the pump body 1; a disc-shaped stuffing box 30 is set on the transmission shaft 8, and the stuffing box The right side of 30 is provided with a groove, the upper end of the stuffing box 30 is clamped between the upper left pump cover 9 and the pump body 1, and the lower end of the stuffing box 30 is clamped between the lower left pump cover 14 and the pump body 1, A shaft sleeve 31 is also provided between the stuffing box 30 and the transmission shaft 8, and the shaft sleeve 31 is keyed to the transmission shaft 8, and a filling cavity 32 is formed between the stuffing box 30 and the shaft sleeve 31. A packing gland 33 is set on the left side, and a water seal ring 34 is set on the right side of the shaft sleeve 31. The packing gland 33 is sealed and connected to the left side of the packing cavity 32, and the lower end of the packing gland 33 passes through the fifth bolt 35 Fixed with the stuffing box 30, the water seal ring 34 is sealingly connected to the rear side of the stuffing cavity 32, and a stuffing tube 36 is also installed on the stuffing box 30, and the stuffing tube 36 communicates with the water sealing ring 34; 8 is also covered with a rear guard plate 37, the rear guard plate 37 is located between the stuffing box 30 and the pump body 1, and the left side of the rear guard plate 37 is sealed with the shaft sleeve 31 by the third O-ring 38 connection, the right side of the rear guard plate 37 is sealed and connected with the impeller 2 through the fourth O-ring 39; a bracket 40 is also set in the middle of the transmission shaft 8, and the two ends of the bracket 40 are connected to each other through bearings. The transmission shaft 8 is connected, the right side of the bracket 40 is fixedly connected with the lower left pump cover 14 through the sixth bolt 41, the lower end of the bracket 40 is fixed on the base 42, and is installed between the bracket 40 and the shaft sleeve 31 There is a rolling bearing 43; an elastic coupling 44 is also sleeved on the transmission shaft 8 on the left side of the bracket 40, and the elastic coupling 44 is keyed to the transmission shaft 8, and on the outside of the elastic coupling 44 A second positioning hole 45 is also provided.

Referring to FIG. 1 , in the present invention, an inlet pad 46 is also provided between the feed inlet 5 and the short inlet pipe 17 . A limit block 47 is also set in the middle of the pump body stud 16 , and the limit block 47 extends into the inner side of the lower pump cover and contacts with the limit protrusion 48 at the bottom of the lower sheath 27 . A protective plate 49 is also mounted on the top of the bracket 40 . An anti-skid plate 50 is also fixed on the right side of the bracket 40, the lower end of the anti-skid plate 50 is clamped on the clamping plate 51, and the clamping plate 51 is sleeved on the transmission shaft 8, and the right side of the clamping plate 51 Press against the rolling bearing 43.

Working principle: The slurry pump of the present invention sends the slurry through the feed port, and then the drive shaft drives the impeller to rotate. When the impeller rotates to the corresponding position, the slurry delivery channel in the impeller communicates with the discharge port, thereby making the slurry The material is output from the discharge port, and the purpose of rapid discharge is achieved due to the continuous rotation of the impeller. At the same time, as the impeller rotates, a near-vacuum state is formed in the pump body, and the air pressure decreases. Therefore, with the help of the air pressure, the slurry can be pushed out, thereby avoiding blockage at the discharge port. In the present invention, special attention is paid to the sealing effect. At the same time, the stuffing box can provide support for the working stability of the transmission shaft. The overall working stability is very good, the power can be strong, and the noise during working is also significantly reduced.

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than limit the technical solutions. Although the applicant has described the present invention in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that those who are not familiar with the technical solutions of the present invention The modification or equivalent replacement of the solution cannot deviate from the purpose and scope of the technical solution, and should be covered by the scope of the claims of the present invention.

Claims (5)

1. A slurry pump for building construction, characterized in that it includes a pump body (1), the inner side of the pump body (1) along the longitudinal direction and the outer side along the longitudinal direction are arc-shaped, and the pump body (1) is Both the upper end of the body (1) and the lower end of the pump body (1) are provided with openings, and an impeller (2) is installed inside the pump body (1), and a protrusion (3) is provided in the middle of the impeller (2) ), the upper end of the impeller (2) is flush with the opening of the upper end of the pump body (1), and the lower end of the impeller (2) is flush with the opening of the lower end of the pump body (1); there is a slurry delivery channel in the impeller (2) (4), the slurry delivery channel (4) forms openings at both ends of the impeller (2), and a horizontal feed port (5) is provided on the right side of the pump body (1), and the feed port (5) Opposite to the protrusion (3) on the impeller (2), the feed port (5) communicates with the slurry channel (4) on the impeller (2), in the pump body (1) There is a connection hole (6) on the left side, the connection head (7) on the left side of the impeller (2) is clamped at the connection hole (6), and the transmission shaft (8) passes through the connection hole ( 6) Finally, it is fixedly connected with the impeller (2); an upper pump cover is installed on the upper end of the pump body (1), and a lower pump cover is installed on the lower end of the pump body (1), and the upper pump cover is formed by the left upper pump cover ( 9) and the upper right pump cover (10), the upper left pump cover (9) is fixed to the pump body (1) by the first bolt (11), and the upper right pump cover (10) is connected to the pump body by the second bolt (12) (1) Fixed, an outlet gasket (13) is installed between the upper left pump cover (9) and the upper right pump cover (10), and the lower pump cover is composed of the lower left pump cover (14) and the lower right pump cover (15) Composition, the left lower pump cover (14) and the right lower pump cover (15) are connected and fixed through the pump body studs (16); the inlet short pipe (17) is also installed on the feed inlet (5), so The inner diameter of the inlet short pipe (17) is equal to the inner diameter of the feed inlet (5), and the inner upper end of the inlet short pipe (17) is fixed to the upper right pump cover (10) by the third bolt (18). The outer edge of the short inlet pipe (17) is also provided with an annular convex edge (19), and a first positioning hole (20) is arranged on the annular convex edge (19); along the longitudinal direction of the pump body (1), The rear side is also provided with a discharge port (21), the opening of the discharge port (21) is set along the vertical direction, and the slurry delivery channel (4) of the impeller (2) is connected with the discharge port after the impeller (2) rotates. The feed port (21) is connected, and a short outlet pipe (22) is installed on the discharge port (21). The inner diameter of the short outlet pipe (22) is equal to the inner diameter of the outlet (21). The short outlet pipe The right side of (22) is fixedly connected with the pump body (1) through the fourth bolt (23), and the left side of the front end of the short outlet pipe (22) is fixedly connected with the upper left pump cover (9) through the left eyebolt (24). The right side of the front end of the short pipe (22) is fixedly connected to the upper right pump cover (10) through the right eyebolt screw (25); an upper sheath (26) is installed on the inner side of the upper pump cover, and a lower pump cover is installed on the inner side of the lower pump cover. The sheath (27), the upper sheath (26) and the lower sheath (27) are all hemispherical structures, The upper sheath (26) is fixed at the upper opening of the pump body (1), the lower sheath (27) is fixed at the lower opening of the pump body (1), and the upper sheath (26) and the pump body (1) ) is provided with a first O-ring seal (28), and a second O-ring seal (29) is provided between the lower sheath (27) and the pump body (1); on the transmission shaft (8) A disk-shaped stuffing box (30) is set, and a groove is provided on the right side of the stuffing box (30). The upper end of the stuffing box (30) is clipped between the upper left pump cover (9) and the pump body ( 1), the lower end of the stuffing box (30) is clamped between the lower left pump cover (14) and the pump body (1), and a shaft sleeve ( 31), the shaft sleeve (31) is keyed to the transmission shaft (8), and a stuffing cavity (32) is formed between the stuffing box (30) and the shaft sleeve (31), on the left side of the shaft sleeve (31) A packing gland (33) is set, and a water seal ring (34) is set on the right side of the shaft sleeve (31). The packing gland (33) is sealed and connected to the left side of the packing cavity (32). The lower end of (33) is fixed to the stuffing box (30) by the fifth bolt (35), and the water seal ring (34) is sealed and connected to the rear side of the stuffing cavity (32), and a stuffing box (30) is also installed on the stuffing box (30). tube (36), the stuffing tube (36) is in communication with the water seal ring (34); a rear guard (37) is set on the transmission shaft (8), and the rear guard (37) is set on Between the stuffing box (30) and the pump body (1), the left side of the rear guard (37) is sealed with the shaft sleeve (31) through the third O-ring (38), and the rear guard (37) The right side of the drive shaft (8) is sealed with the impeller (2) through the fourth O-ring (39); a bracket (40) is set in the middle of the transmission shaft (8), and the two ends of the bracket (40) Both are connected to the transmission shaft (8) through bearings, the right side of the bracket (40) is fixedly connected with the lower left pump cover (14) through the sixth bolt (41), and the lower end of the bracket (40) is fixed on the base (42 ), a rolling bearing (43) is installed between the bracket (40) and the shaft sleeve (31); an elastic coupling is set on the transmission shaft (8) on the left side of the bracket (40) (44), the elastic coupling (44) is keyed to the transmission shaft (8), and a second positioning hole (45) is provided outside the elastic coupling (44). 2. A slurry pump for building construction according to claim 1, characterized in that an inlet pad (46) is provided between the feed inlet (5) and the short inlet pipe (17) . 3. A slurry pump for building construction according to claim 2, characterized in that a limit block (47) is set in the middle of the pump body stud (16), and the limit block ( 47) Protrude into the inner side of the lower pump cover and contact with the limit protrusion (48) at the bottom of the lower sheath (27). 4. A slurry pump for building construction according to claim 3, characterized in that a protective plate (49) is installed on the top of the bracket (40). 5. A slurry pump for building construction according to claim 4, characterized in that an anti-skid plate (50) is fixed on the right side of the bracket (40), and the anti-skid plate (50) The lower end of the clamping plate (51) is clamped on the clamping plate (51), and the clamping plate (51) is sleeved on the transmission shaft (8), and the right side of the clamping plate (51) is pressed against the rolling bearing (43).