CN114623237A - An easy-to-install mechanical seal for agitators - Google Patents

Abstract

The invention belongs to the technical field of mechanical sealing elements, and provides a mechanical seal for a stirrer, which is convenient to install and comprises a shell, wherein a first static sleeve is arranged on one side of the shell, a second static sleeve is arranged on the other side of the shell, and an installation assembly is connected between the first static sleeve and the second static sleeve; the first stationary sleeve is attached with a first movable ring, and the second stationary sleeve is attached with a second movable ring; the first movable ring is provided with a first connecting assembly, the first connecting assembly is connected with the first connecting ring, the second movable ring is provided with a second connecting assembly, and the second connecting assembly is connected with a second connecting ring. The mechanical seal is convenient to be arranged on a rotating shaft of the stirrer so as to seal the stirrer.

Description

An easy-to-install mechanical seal for agitators

technical field

The invention belongs to the technical field of mechanical seals, and in particular relates to a mechanical seal for agitators that is easy to install.

Background technique

Mechanical seal refers to a seal that prevents fluid leakage by at least a pair of end faces perpendicular to the rotation axis that keep fit and slide relative to each other under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism and the cooperation of the auxiliary seal. The device, the spring loading mechanism and the auxiliary seal are the mechanical seals of the metal bellows, which we call the metal bellows seal. In light-duty seals, rubber bellows are also used as auxiliary seals. The rubber bellows have limited elasticity, and generally need to be supplemented by springs to meet the loading elasticity. "Mechanical seals" are often referred to as "mechanical seals".

When the existing self-locking mechanical seal is installed, it is installed on both sides of the shell, which cannot be adjusted according to the thickness of the shell, and mostly uses bolts and nuts for installation and disassembly, which is very inconvenient to install and disassemble. For this we offer an easy-to-install mechanical seal for agitators.

SUMMARY OF THE INVENTION

The present invention aims to solve the problems described in the background art, and provides a mechanical seal for a stirrer that is easy to install.

In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a mechanical seal for agitator that is easy to install, comprising a casing, one side of the casing is provided with a first static sleeve, and the other side of the casing is provided with a second static sleeve , a mounting assembly is connected between the first stationary sleeve and the second stationary sleeve;

The first stationary sleeve is fitted with a first movable ring, and the second stationary sleeve is fitted with a second movable ring;

The first movable ring is provided with a first connection component, the first connection component is connected with the first connection ring, the second movable ring is provided with a second connection component, and the second connection component is connected with the second connection ring.

In a preferred embodiment of the present invention, both the first connecting ring and the second connecting ring are provided with mounting bolts, and the first connecting ring and the second connecting ring are threadedly connected to the rotating shaft of the agitator through the mounting bolts.

In a preferred embodiment of the present invention, connecting grooves are provided on the side of the first stationary sleeve and the second stationary sleeve away from the casing, and connecting rings are provided on both the first movable ring and the second movable ring, and the connecting rings are provided with connecting grooves. There are balls attached to the connection groove, the first stationary sleeve is attached to the first movable ring through the connection ring and the connection slot; the second stationary sleeve is attached to the second movable ring through the connection ring and the connection slot.

In a preferred embodiment of the present invention, the first stationary sleeve is provided with a sealing slot, and the second stationary sleeve is fixedly connected with a sealing insert ring which is horizontally slidably matched with the sealing slot.

In a preferred embodiment of the present invention, the mounting assembly includes a rotating ring movably mounted on the first stationary sleeve, an adjusting gear ring is mounted on the inner side wall of the rotating ring, the adjusting gear ring is coaxially meshed with an adjusting gear, and the adjusting gear is the same as the adjusting gear. The shaft is fixedly connected with an adjusting screw sleeve, the adjusting screw sleeve is movably connected with the first stationary sleeve, and the adjusting screw sleeve is coaxially threadedly connected with an installation screw;

One side of the second stationary sleeve is fixedly connected with an installation rod which penetrates through the casing, the installation screw is sleeved on the installation rod, the installation rod is provided with a clamping spring, and both ends of the clamping spring are fixedly connected with clamping blocks. The side wall of the installation screw is provided with a clamping groove which is horizontally slidingly matched with the clamping block.

In a preferred embodiment of the present invention, the rotating ring is horizontally slidably fitted with a movable rod penetrating the rotating ring, one end of the movable rod is installed with a clamping plate, a limit spring is sleeved on the upper part of the clamping plate, and one end of the limiting spring is fixed on the On the rotating ring, the other end of the limit spring is fixed on the clamping plate, the first stationary sleeve is provided with a clamping gear ring that is clamped with the clamping plate, and the other end of the movable rod is provided with a pull ring.

In a preferred embodiment of the present invention, limit grooves are opened on both sides of the installation screw, and a limit block that is horizontally slidably matched with the limit groove is installed on the first stationary sleeve.

In a preferred embodiment of the present invention, one side of the first stationary sleeve and the second stationary sleeve is fixedly installed with a sealing ring inserted through the inside of the housing.

In a preferred embodiment of the present invention, the first connection component includes a liquid storage tank disposed on the first movable ring, the liquid storage tank is fitted with a first piston in a horizontal sliding manner, and the first piston is fixedly connected with the first movable ring. a pressure rod with a horizontal sliding fit of the ring, a connecting sleeve is sleeved on the pressure rod, and the connecting sleeve is fixedly connected with the first connecting ring;

A liquid return groove communicated with the liquid storage tank is opened on the first movable ring, a return spring is fixedly connected in the liquid return groove, and a second piston which is horizontally slidingly matched with the liquid return groove is fixedly connected to the return spring.

In a preferred embodiment of the present invention, the second connecting assembly includes a movable sleeve mounted on the second movable ring, and the second connecting ring is provided with a sealing sleeve sleeved on the movable sleeve;

A guide rod inserted into the second movable ring is installed on one side of the second connecting ring close to the second movable ring, and a buffer spring is sleeved on the guide rod.

The principle of the present invention and its beneficial effects: (1) through the setting of the installation components, the overall device has a good installation effect. The installation rod on one side of the stationary sleeve is inserted into the interior of the housing, the installation screw on the side of the first stationary sleeve is inserted into the interior of the housing, and the installation screw is sleeved on the surface of the installation rod. The clamping block is retracted into the installation rod, and the clamping spring is compressed until the clamping block pops out under the action of the clamping spring, so that the clamping block is inserted into the clamping slot, which is convenient for the connection of the first stationary sleeve and the second stationary sleeve. Under the action of the sealing insert ring and the sealing slot, the sealing connection between the first stationary sleeve and the second stationary sleeve is facilitated;

(2) The user pulls the pull ring, the pull ring drives the clamping plate to move down through the movable rod, and compresses the limit spring, so that the clamping plate is separated from the clamping tooth ring, so that the rotating ring can be rotated, and the user rotates the rotating ring , the rotating ring drives the adjusting screw sleeve to rotate through the adjusting gear and the adjusting gear ring, and the installation screw is under the action of the limit block and the limit slot, so that the side of the installation screw moves, so that the block moves inside the slot, so that the One end of the clamping block is attached to one side of the clamping slot, so as to facilitate the fixed connection between the first stationary sleeve and the second stationary sleeve, so as to facilitate the installation and removal of shells with different thicknesses. Loosen the pull ring, the clamping plate will return to its original position under the action of the limit spring, so that the clamping plate and the clamping gear ring are clamped, which is convenient for the rotation ring to limit the position and strengthens the installation effect;

(3) Through the arrangement of the first connecting assembly and the second connecting assembly, the overall device has a good movable connection effect. When the rotating shaft rotates, the first connecting ring drives the connecting sleeve to move toward the inside of the first movable ring, and the connecting sleeve moves toward the inside of the first movable ring. The pressure rod drives the first piston to move inside the liquid storage tank, squeezes the liquid inside the liquid storage tank into the liquid return tank, squeezes the second piston, and compresses the return spring. Under the action of the return spring , play a good buffering effect, when the shaft stops rotating, the first piston returns to its original position, and the second piston squeezes the liquid inside the liquid return tank under the action of the return spring, so that the liquid returns to the liquid storage tank. , to enhance the use effect, when the second connecting ring moves, it drives the sealing sleeve to move along the surface of the movable sleeve, and one end of the guide rod moves inside the second movable ring, compressing the buffer spring, and under the action of the reaction force of the buffer spring It has a good buffering effect.

Additional aspects and advantages of the present invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of embodiments taken in conjunction with the accompanying drawings, wherein:

Fig. 1 is the structure schematic diagram of the installation place of the present invention;

Fig. 2 is the enlarged schematic diagram of the structure at place A in Fig. 1 of the present invention;

Fig. 3 is a schematic diagram of a large structure at B in Fig. 1 of the present invention;

Fig. 4 is a schematic diagram of a large structure at C in Fig. 1 of the present invention;

5 is a schematic structural diagram of the first stationary sleeve of the present invention;

FIG. 6 is a schematic top-view structural diagram of the first stationary sleeve of the present invention.

Reference numerals in the accompanying drawings include: rotating shaft 1, housing 2, first stationary sleeve 3, second stationary sleeve 4, sealing insert ring 5, first movable ring 6, first connecting ring 7, second movable ring 8. The second connecting ring 9, the mounting bolt 10, the connecting groove 11, the connecting ring 12, the ball 13, the mounting rod 14, the mounting screw 15, the clamping groove 16, the clamping spring 17, the clamping block 18, the sealing ring 19, the rotating ring 20. Adjusting screw sleeve 21, adjusting gear 22, adjusting gear ring 23, pulling ring 24, movable rod 25, limit spring 26, clamping plate 27, clamping gear ring 28, connecting sleeve 29, pressure rod 30, liquid storage tank 31. The first piston 32, the liquid return groove 33, the second piston 34, the return spring 35, the movable sleeve 36, the sealing sleeve 37, the guide rod 38, and the buffer spring 39.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the present invention, and should not be construed as a limitation of the present invention.

In the description of the present invention, it should be understood that the terms "portrait", "horizontal", "vertical", "upper", "lower", "front", "rear", "left", "right", The orientation or positional relationship indicated by "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and to simplify the description rather than to indicate or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

In the description of the present invention, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a mechanical connection or an electrical connection, or two The internal communication between the elements may be directly connected or indirectly connected through an intermediate medium, and those of ordinary skill in the art can understand the specific meanings of the above terms according to specific circumstances.

The present application provides a mechanical seal for an agitator that is easy to install, basically as shown in FIG. 1 to FIG. 6 , comprising a casing 2 arranged on the rotating shaft 1 of the agitator, and a first stationary sleeve is disposed on the left side of the casing 2 3. The first stationary sleeve 3 is fitted with a first movable ring 6, the right side of the housing 2 is provided with a second stationary sleeve 4, the second stationary sleeve 4 is fitted with a second movable ring 8, the first movable ring 6 and An installation component is installed between the second movable rings 8, the first movable ring 6 is connected with the first connecting component, the first connecting component is connected with the first connecting ring 7, the second movable ring 8 is connected with the second connecting component, and the second connecting component is connected with the second connecting component. The assembly is connected with a second connecting ring 9 .

In this embodiment, the first stationary sleeve 3 and the second stationary sleeve 4 are both provided with connection grooves 11 , the first movable ring 6 and the second movable ring 8 are both provided with connection rings 12 , and the connection rings 12 are both provided with The balls 13 attached to the connecting groove 11, that is, the first stationary sleeve 3 is attached to the first movable ring 6 through the connecting groove 11 and the connecting ring 12 and the balls 13, and the second stationary sleeve 4 passes through the connecting groove 11 and the connecting ring 12 and the first movable ring 6. The balls 13 are in contact with the second movable ring 8 . In this embodiment, the first stationary sleeve 3 is provided with a sealing slot, and the second stationary sleeve 4 is fixedly connected with a sealing insert ring 5 which is horizontally slidably matched with the sealing slot.

In this embodiment, the installation assembly includes a rotating ring 20 arranged on the first stationary sleeve 3 , the rotating ring 20 is rotatably matched with the first stationary sleeve 3 , and an adjusting gear ring 23 is fixedly connected to the inner side wall of the rotating ring 20 . The ring 23 is coaxially meshed with the adjusting gear 22, the adjusting gear 22 is coaxially fixedly connected with the adjusting screw sleeve 21, the adjusting screw sleeve 21 is coaxially threadedly connected with the mounting screw 15, and the two sides of the mounting screw 15 are fixedly connected with the limit blocks. A stationary sleeve 3 is provided with a limit groove which is horizontally slidably matched with the limit block. The mounting screw 15 is inserted into the housing 2 and is horizontally slidably fitted with the housing 2 .

The mounting assembly also includes a mounting rod 14 fixedly mounted on the second stationary sleeve 4 , the mounting rod 14 is inserted into the housing 2 and slidably matched with the housing 2 , the mounting screw 15 is sleeved on the mounting rod 14 , and the mounting rod 14 There is a through hole on the top, and a clamping spring 17 is arranged in the through hole. Both ends of the clamping spring 17 are fixedly connected with a clamping block 18 (the clamping block 18 is wedge-shaped). Matching slot 16.

In this embodiment, a movable rod 25 is provided on the movable ring. The movable rod 25 is horizontally slidingly matched with the rotating ring 20 and the movable rod 25 penetrates the rotating ring 20. The left end of the movable rod 25 is fixedly connected with a pull ring 24, and the right end of the movable rod 25 A clamp plate 27 is fixedly connected, a limit spring 26 is sleeved on the movable rod 25, one end of the limit spring 26 is fixedly connected to the rotating ring 20, and the other end of the limit spring 26 is fixedly connected to the clamp plate 27. The sleeve 3 is provided with a clamping toothed ring 28 which is clamped with the clamping plate 27 . In this embodiment, both the first stationary sleeve and the second stationary sleeve 4 are fixedly installed with a sealing ring 19 inserted through the inside of the housing 2 .

During direct installation, the user covers the first stationary sleeve 3 and the second stationary sleeve 4 on both sides of the agitator shaft 1 and on both sides of the housing 2, and the mounting rod 14 on one side of the second stationary sleeve 4 is inserted into the housing. Inside the body 2, the mounting screw 15 on the side of the first stationary sleeve 3 is inserted into the interior of the housing 2, and the mounting screw 15 is sleeved on the surface of the mounting rod 14. 18 is retracted into the installation rod 14 to compress the clamping spring 17. When the first stationary sleeve 3 is attached to one side of the casing 2, the clamping block 18 pops out under the action of the clamping spring 17, so that the clamping block 18 is inserted To the inside of the slot 16, it is convenient for the connection of the first stationary sleeve 3 and the second stationary sleeve 4, and under the action of the sealing insert ring 5 and the sealing slot, it is convenient for the sealing between the first stationary sleeve 3 and the second stationary sleeve 4. connect.

When the thickness is adjusted and installed, the user pulls the pull ring 24, and the pull ring 24 drives the clamping plate 27 to move to the left through the movable rod 25 (as shown in FIG. 2), and compresses the limit spring 26, so that the clamping plate 27 and the clamping plate 27 are locked. The gear ring 28 is disengaged, so that the rotating ring 20 can be rotated. The user rotates the rotating ring 20. The rotating ring 20 drives the adjusting screw sleeve 21 to rotate through the adjusting gear 22 and the adjusting gear ring 23. Under the action of the slot, one side of the mounting screw 15 is moved, so that the clamping block 18 moves inside the clamping slot 16, so that one end of the clamping block 18 is in contact with one side of the clamping slot 16, so as to facilitate the installation of the first stationary sleeve. 3 and the second stationary sleeve 4 are fixedly connected, so as to facilitate the installation and disassembly of the shell 2 with different thicknesses. After installation, the user releases the pull ring 24, and the clamping plate 27 recovers under the action of the limit spring 26 In the original position, the clamping plate 27 is clamped with the clamping toothed ring 28, which is convenient for rotation to limit the position and enhances the installation effect.

In this embodiment, as shown in FIG. 1 to FIG. 4 , the first connecting assembly includes a liquid storage tank 31 arranged on the first movable ring 6 . The liquid storage tank 31 is fitted with a first piston 32 in a horizontal sliding fit. A piston 32 is fixedly connected with a pressure rod 30 which is horizontally slidably matched with the first movable ring 6. The pressure rod 30 is sleeved with a connecting sleeve 29, the pressure rod 30 is fixedly connected with the connecting sleeve 29, and the connecting sleeve 29 is connected with the first connecting ring. 7. Fixed connection, the first movable ring 6 is provided with a liquid return groove 33 that communicates with the liquid storage tank 31, a return spring 35 is fixedly connected in the liquid return groove 33, and the return spring 35 is fixedly connected with the liquid return groove 33. Horizontal sliding The mating second piston 34 . Mounting bolts 10 are provided on the first connecting ring 7 , and the first connecting ring 7 is fixed on the rotating shaft 1 of the agitator through mounting screws 15 .

The connecting sleeve 29 drives the first piston 32 to move inside the liquid storage tank 31 through the pressing rod 30, squeezes the liquid inside the liquid storage tank 31 into the liquid return tank 33, squeezes the second piston 34, and presses the return spring. 35 is compressed, and under the action of the return spring 35, it has a good buffering effect. When the first piston 32 returns to its original position, the second piston 34 squeezes the liquid inside the liquid return tank 33 under the action of the return spring 35. pressure, so that the liquid returns to the interior of the liquid storage tank 31, which enhances the use effect.

In this embodiment, the second connecting assembly includes a movable sleeve 36 mounted on the second movable ring 8, and the second connecting ring 9 is provided with a sealing sleeve 37 sleeved on the movable sleeve 36; the second connecting ring 9 is close to the first A guide rod 38 inserted into the second movable ring 8 is installed on one side of the second movable ring 8 , and a buffer spring 39 is sleeved on the guide rod 38 .

When the second connecting ring 9 moves, it drives the sealing sleeve 37 to move along the surface of the movable sleeve 36 , and one end of the guide rod 38 moves inside the second movable ring 8 to compress the buffer spring 39 . Under the action, it has a good buffering effect.

In the description of this specification, reference to the terms "preferred embodiment", "one embodiment", "some embodiments", "example", "specific example" or "some examples" or the like is meant to be combined with the description of the embodiment A particular feature, structure, material or characteristic described or exemplified is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, The scope of the invention is defined by the claims and their equivalents.

Claims (10)

1. A mechanical seal for agitators that is easy to install, characterized in that it comprises a casing, one side of the casing is provided with a first static sleeve, the other side of the casing is provided with a second static sleeve, the first static sleeve and An installation component is connected between the second stationary sleeves; The first stationary sleeve is fitted with a first movable ring, and the second stationary sleeve is fitted with a second movable ring; The first movable ring is provided with a first connection component, the first connection component is connected with the first connection ring, the second movable ring is provided with a second connection component, and the second connection component is connected with the second connection ring. 2. The easy-to-install mechanical seal for an agitator according to claim 1, wherein the first connecting ring and the second connecting ring are provided with mounting bolts, and the first connecting ring and the second connecting ring are connected to each other through the mounting bolts. The shaft of the agitator is threaded. 3. The easy-to-install mechanical seal for agitator as claimed in claim 2, wherein the first stationary sleeve and the second stationary sleeve are provided with connecting grooves on one side away from the housing, and the first movable ring and the second movable ring are provided with connecting grooves. The rings are all provided with connecting rings, the connecting rings are provided with balls attached to the connecting grooves, the first stationary sleeve is attached to the first movable ring through the connecting rings and the connecting grooves; the second stationary sleeves are connected to the first movable ring through the connecting rings and the connecting grooves. The second activity ring is attached to each other. 4. The easy-to-install mechanical seal for agitator as claimed in claim 3, wherein the first stationary sleeve is provided with a sealing slot, and the second stationary sleeve is fixedly connected with a sealing slot which is horizontally slidably matched with the sealing slot. ring. 5. The easy-to-install mechanical seal for agitator according to claim 4, wherein the installation assembly comprises a rotating ring movably installed on the first stationary sleeve, an adjusting gear ring is installed on the inner side wall of the rotating ring, and the adjusting gear The ring is coaxially meshed with an adjusting gear, the adjusting gear is coaxially fixedly connected with an adjusting screw sleeve, the adjusting screw sleeve is movably connected with the first stationary sleeve, and the adjusting screw sleeve is coaxially threadedly connected with an installation screw; One side of the second stationary sleeve is fixedly connected with an installation rod which penetrates through the casing, the installation screw is sleeved on the installation rod, the installation rod is provided with a clamping spring, and both ends of the clamping spring are fixedly connected with clamping blocks. The side wall of the installation screw is provided with a clamping groove which is horizontally slidingly matched with the clamping block. 6. The easy-to-install mechanical seal for agitator as claimed in claim 5, wherein the rotating ring is horizontally slidably fitted with a movable rod penetrating the rotating ring, one end of the movable rod is provided with a clamping plate, and the upper sleeve of the clamping plate is There is a limit spring, one end of the limit spring is fixed on the rotating ring, the other end of the limit spring is fixed on the card plate, the first stationary sleeve is provided with a clamping tooth ring that is connected with the card plate, and the other end of the movable rod is installed With pull tab. 7. The easy-to-install mechanical seal for agitator according to claim 6, wherein limit slots are opened on both sides of the installation screw, and a limit block that is horizontally slidably matched with the limit slot is installed on the first stationary sleeve . 8. The easy-to-install mechanical seal for agitators according to claim 7, wherein a sealing ring inserted into the casing is fixedly installed on one side of the first stationary sleeve and the second stationary sleeve. 9. The easy-to-install mechanical seal for an agitator according to claim 8, wherein the first connecting component comprises a liquid storage tank arranged on the first movable ring, and the liquid storage tank is fitted with a first piston in a horizontal sliding manner, The first piston is fixedly connected with a pressing rod which is horizontally slidably matched with the first movable ring, a connecting sleeve is sleeved on the pressing rod, and the connecting sleeve is fixedly connected with the first connecting ring; A liquid return groove communicated with the liquid storage tank is opened on the first movable ring, a return spring is fixedly connected in the liquid return groove, and a second piston which is horizontally slidingly matched with the liquid return groove is fixedly connected to the return spring. 10. The easy-to-install mechanical seal for an agitator according to claim 9, wherein the second connecting assembly comprises a movable sleeve mounted on the second movable ring, and the second connecting ring is provided with a movable sleeve that is sleeved on the movable sleeve the sealing sleeve; A guide rod inserted into the second movable ring is installed on one side of the second connecting ring close to the second movable ring, and a buffer spring is sleeved on the guide rod.

Images