CN210890170U

CN210890170U - Electric knife gate valve capable of being compressed in self-adaptive mode

Info

Publication number: CN210890170U
Application number: CN201921682895.6U
Authority: CN
Inventors: 韩刚; 张巨凯; 郝卫强
Original assignee: Shijiazhuang Rongxin Science & Technology Co ltd
Current assignee: Shijiazhuang Rongxin Science & Technology Co ltd
Priority date: 2019-10-10
Filing date: 2019-10-10
Publication date: 2020-06-30
Anticipated expiration: 2029-10-10

Abstract

The utility model relates to an electronic knife gate valve that can self-adaptation compresses tightly belongs to mechanical engineering technical field, including valve body and the drive arrangement who is located on the support, supporting valve plate and the seal assembly of setting in the valve body, drive arrangement passes through the vice valve plate of connecting of lead screw, and the key lies in: the nut is fixed with a connecting shaft, the connecting shaft is sleeved with a disc spring, and a matching connecting seat of the valve plate is sleeved on the connecting shaft, compresses the disc spring and has the freedom degree of sliding adjustment along the connecting shaft. In the electric knife gate valve, the valve plate and the screw are elastically connected through the connecting shaft, the disc spring and the connecting seat, the elastic deformation of the disc spring is utilized to push the connecting seat and the valve plate to slide to adjust the position in an adaptive manner, so that the valve plate and the valve body are compressed, the valve plate can be effectively prevented from being deadly jacked to damage a motor, and the sealing performance can be effectively improved.

Description

Electric knife gate valve capable of being compressed in self-adaptive mode

Technical Field

The utility model belongs to the technical field of mechanical engineering, a knife gate valve for feed proportioning system is related to, the electronic knife gate valve that concretely relates to valve plate and valve body self-adaptation compressed tightly.

Background

In the batching systems of various industries, the materials are in various types, such as granular, powdery, blocky and the like. For the control of the dosing of powdery materials, knife gate valves are often used. The knife gate valve cuts off materials by opening and closing a flashboard vertical to the direction of the materials, the existing commonly used opening and closing driving modes mainly comprise hand wheel driving, electric driving and pneumatic driving, the existing electric knife gate valve adopts single lead screw transmission, a screw is directly connected with a valve plate (hard connection), and the valve plate is driven to be opened and closed by single force. Because of the power executor is longer, and in the use, the deviation often appears in detection switch's judgement distance, and signal feedback is wrong, and the worm gear continuously starts, and leads to the valve plate dieback, and the motor damages, and the valve plate blocks, the knife gate valve can not be opened.

Disclosure of Invention

In order to solve the problem that the valve plate easily died when current knife gate valve is opened and close, the utility model discloses with screw and valve plate elastic connection, make valve plate self-adaptation compress tightly the valve body, make the valve plate activity freely, close smoothly, effectively prevent that the motor from damaging.

The technical scheme of the utility model is that: the utility model provides a but electronic knife gate valve that self-adaptation compressed tightly, includes valve body and the drive arrangement who is located on the support, and supporting valve plate and the seal assembly of setting up in the valve body, drive arrangement passes through the vice valve plate of connecting of lead screw nut, and the key lies in: the nut is fixed with a connecting shaft, the connecting shaft is sleeved with a disc spring, and a matching connecting seat of the valve plate is sleeved on the connecting shaft, compresses the disc spring and has the freedom degree of sliding adjustment along the connecting shaft.

In the electric knife gate valve, the valve plate and the screw are elastically connected through the connecting shaft, the disc spring and the connecting seat, the elastic deformation of the disc spring is utilized to push the connecting seat and the valve plate to slide to adjust the position in an adaptive manner, so that the valve plate and the valve body are compressed, the valve plate can be effectively prevented from being deadly jacked to damage a motor, and the sealing performance can be effectively improved.

Furthermore, a limiting groove is formed in the connecting shaft along the moving direction of the valve plate, and the valve plate is inserted into the limiting groove in a matched mode and has sliding freedom. In this technical scheme, when the connecting seat slides along the connecting axle under spring force effect, the flashboard slides along the spacing groove in step, and the design can be to the two heavy direction of the self-adaptation adjustment slip of valve plate like this to guarantee the steady reliable of motion, avoid crooked and the card pause and sealed not good.

Furthermore, a long hole is formed in the valve plate portion inserted into the limiting groove, the long hole is communicated with the limiting groove, and the pin shaft penetrates through the connecting shaft and the long hole to form a limiting connecting structure. In the technical scheme, the long hole and the pin shaft are used for connecting the connecting shaft and the valve plate on the one hand, and the self-adaptive adjusting distance of the valve plate can be limited on the other hand.

Further, in order to facilitate installation and realize the swing joint of the valve plate and the connecting shaft, except for the scheme of the limiting groove and the long hole, an open groove matched with the connecting shaft can be formed in the valve plate, and the connecting shaft is provided with a limiting pin of a limiting connecting seat.

Furthermore, in order to facilitate installation and protect the connecting structure, the valve body and the driving device are respectively arranged at two ends of the support, and the valve plate and the lead screw respectively penetrate through two side plates of the support and extend into the support.

Furthermore, in order to facilitate control of the opening and closing stroke of the valve plate, a detection plate is fixedly arranged on the nut and fixedly connected with the connecting shaft, two detection switches are arranged on a top plate or a bottom plate of the support in a matched mode, and the positions and the intervals of the two detection switches are matched with the stroke and the limit position of the valve plate. The detection plate is fixedly connected with the connecting shaft in an integrated mode, so that the positions of the connecting shaft and the valve plate can be conveniently and directly detected, and detection errors are reduced.

Further, the driving device is a worm gear speed reducer. The worm gear speed reducer has the advantages of compact structure, small volume, simple and easy installation, flexibility and high efficiency.

The utility model has the advantages that: 1. this push-pull valve utilizes the elastic deformation of dish spring to promote connecting seat and valve plate slip self-adaptation adjusting position, makes valve plate and valve body compress tightly, can effectively prevent that the valve plate from dying, damages the motor, can effectively improve the leakproofness again. 2. The movable connecting structure has ingenious design, the valve plate moves stably and reliably, and the valve plate moves flexibly and opens and closes smoothly; the whole structure is compact and practical.

Drawings

FIG. 1 is a schematic structural view of a gate valve according to a first embodiment;

FIG. 2 is a schematic structural view of the valve plate, the connecting seat and the connecting shaft according to the first embodiment;

FIG. 3 is a schematic structural view of a second embodiment of a gate valve;

in the drawings, 1 represents a bracket, 2 represents a valve body, 3 represents a driving device, 4 represents a valve plate, 41 represents a long hole, 42 represents a connecting seat, 43 represents an open groove, 44 represents a limit pin, 5 represents a nut, 51 represents a lead screw, 6 represents a connecting shaft, 61 represents a limit groove, 7 represents a disc spring, 8 represents a pin shaft, 9 represents a detection plate, and 10 represents a detection switch.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

The utility model provides a but electronic knife gate valve that self-adaptation compresses tightly, refers to fig. 1, including valve body 2 and the drive arrangement 3 of being located on support 1, valve body 2 and drive arrangement 3 branch are located the both ends of support 1, and drive arrangement 3 adopts the turbine worm speed reducer, and lead screw 51 is connected to the pivot of speed reducer, and lead screw 51 passes the curb plate of support 1 and stretches into in the support 1. The valve body 2 is provided with a matched sealing packing box and a packing, one end of the valve plate 4 is inserted into the valve body 2, and the other end of the valve plate passes through the side plate of the support 1 and extends into the support 1 to be connected with a matched nut 5 on the lead screw 51. Referring to fig. 2, the end of the valve plate 4 is integrally connected with a connecting seat 42 and is provided with a long hole 41. The nut 5 is fixed with a connecting shaft 6, the connecting shaft 6 is sleeved with a disc spring 7, and the connecting seat 42 is sleeved on the connecting shaft 6 to tightly press the disc spring 7. Meanwhile, the valve plate 4 is inserted into a limiting groove 61 formed in the connecting shaft 6 along the moving direction of the valve plate 4 in a matching manner, the long hole 41 is communicated with the limiting groove 61, and the pin shaft 8 penetrates through the connecting shaft 6 and the long hole 41 to form a limiting connecting structure. The nut 5 is also fixedly provided with a detection plate 9, the detection plate 9 is fixedly connected with the connecting shaft 6, the top plate or the bottom plate of the bracket 1 is provided with two detection switches 10 in a matching way, and the positions and the intervals of the two detection switches 10 are matched with the stroke and the limit position of the valve plate 4.

The utility model discloses a theory of operation does: the driving device 3 rotates to drive the screw 51 to rotate, the nut 5 drives the detection plate 9 and the connecting shaft 6 to move, the valve plate 4 is further driven to move, the valve is opened, and after the detection plate 9 touches the detection switch 10, the driving device 3 stops rotating. After unloading, when closing the valve, drive arrangement 3 drives lead screw 51 reversal, and screw 5 drives pick-up plate 9 and connecting axle 6 and removes, and then drives valve plate 4 and remove, and the valve is closed, and after detection switch 10 was touched to pick-up plate 9, drive arrangement 3 stall, and the dish spring 7 between connecting axle 6 and the connecting seat 42 outwards extends by the state of compressing tightly, promotes to compress tightly airtight by oneself between valve plate 4 and the valve body 2.

The second embodiment is basically the same as the first embodiment, except that the connecting structure of the connecting shaft 6 and the valve plate 4 is different, referring to fig. 3, in the second embodiment, an open slot 43 adapted to the connecting shaft 6 is formed in the valve plate 4, the connecting shaft 6 is inserted into the open slot 43, and the connecting shaft 6 is provided with a limit pin 44 for limiting the connecting seat 42.

Claims

1. The utility model provides a but electronic knife gate valve that self-adaptation compressed tightly, includes valve body (2) and drive arrangement (3) of being located on support (1), and supporting valve plate (4) and the seal assembly of setting in valve body (2), drive arrangement (3) are through screw pair connection valve plate (4), its characterized in that: a connecting shaft (6) is fixed on the nut (5), a disc spring (7) is sleeved on the connecting shaft (6), a matching connecting seat (42) of the valve plate (4) is sleeved on the connecting shaft (6) and compresses the disc spring (7), and the sliding adjusting freedom degree along the connecting shaft (6) is achieved.

2. The adaptively compressible, electric knife gate valve of claim 1, wherein: the connecting shaft (6) is provided with a limiting groove (61) along the moving direction of the valve plate (4), and the valve plate (4) is inserted in the limiting groove (61) in a matching manner and has a sliding degree of freedom.

3. The adaptively compressible, electric knife gate valve of claim 2, wherein: the valve plate (4) inserted in the limiting groove (61) is provided with a long hole (41), the long hole (41) is communicated with the limiting groove (61), and the pin shaft (8) penetrates through the connecting shaft (6) and the long hole (41) to form a limiting connecting structure.

4. The adaptively compressible, electric knife gate valve of claim 1, wherein: the valve plate (4) is provided with an open slot (43) matched with the connecting shaft (6), and the connecting shaft (6) is provided with a limit pin (44) for limiting the connecting seat (42).

5. The adaptively compressible, electric knife gate valve of claim 1, wherein: the valve body (2) and the driving device (3) are respectively arranged at two ends of the support (1), and the valve plate (4) and the lead screw (51) respectively penetrate through two side plates of the support (1) and extend into the support (1).

6. An adaptively compressible, electrically powered knife gate valve according to claim 5, wherein: the detection plate (9) is fixedly arranged on the screw (5), the detection plate (9) is fixedly connected with the connecting shaft (6), the top plate or the bottom plate of the support (1) is provided with two detection switches (10) in a matched mode, and the positions and the intervals of the two detection switches (10) are matched with the stroke and the limit position of the valve plate (4).

7. The adaptively compressible, electric knife gate valve of claim 1, wherein: the driving device is a worm and gear speed reducer.