CN211779043U

CN211779043U - Pneumatic valve

Info

Publication number: CN211779043U
Application number: CN201922218560.5U
Authority: CN
Inventors: 王学科
Original assignee: Hebei Huafeng Energy Technology Development Co Ltd
Current assignee: Hebei Huafeng Energy Technology Development Co Ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2020-10-27
Anticipated expiration: 2029-12-12

Abstract

The pneumatic valve claimed by the utility model comprises a valve body, a bottom cover, a top cover and a piston; the pneumatic valve also comprises a lead screw and an adjusting sleeve in threaded connection with the lead screw; a spring is connected between the adjusting sleeve and the conical head in a pre-compression mode and can push a valve on the piston to seal and block the valve port; the end, extending into the adjusting sleeve, of the screw rod is fixedly connected with the conical head, and the screw rod can drive the valve seal to remove the valve port from being blocked through the conical head; the utility model discloses available spiro union is in the precompression volume of the adjusting collar adjustment spring of lead screw to this realizes that the adjusting collar is spacing to the spring, makes this pneumatic valve can directly dismantle the top cap from the bottom, with this be convenient for the dismantlement between top cap and the bottom, makes this pneumatic valve convenient operation, and is efficient, has the effect that reduces workman intensity of labour.

Description

Pneumatic valve

Technical Field

The utility model belongs to the technical field of flow control is relevant, especially, relate to a pneumatic valve.

Background

Pneumatic valves, valves driven by means of compressed air. The pneumatic valve consists of an actuating mechanism and an adjusting mechanism. The executing mechanism is a thrust component of the regulating valve, and generates corresponding thrust according to the pressure of the control signal to push the regulating mechanism to act. The valve body is a regulating part of the pneumatic valve, and is directly contacted with a regulating medium to regulate the flow of the fluid.

At present, a spring is pre-compressed in the existing pneumatic valve and is used for pushing a valve seal on an adjusting mechanism to act on a valve port of a valve body, so that the closing operation of the pneumatic valve is realized; in the use process of the pneumatic valve, the top cover assembled with the spring is usually required to be detached from the corresponding bottom cover, and the pre-compressed spring has a pushing force towards the top cover away from the bottom cover, so that in the process of detaching the top cover, people need to replace three short bolts connected with the top cover and the bottom cover by three long screws, and adjust the three long screws simultaneously, so that the top cover and the bottom cover need to be slowly loosened in the detaching process, related problems caused after the top cover is bounced off by the spring are prevented, the detachment between the top cover and the bottom cover on the conventional pneumatic valve is complicated, the labor intensity of workers is increased, and the efficiency is reduced.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a pneumatic valve in order to solve the technical problems in the prior art.

The pneumatic valve comprises a valve body with a valve port, a bottom cover fixedly connected to the valve body, a top cover fixedly connected to the bottom cover, and a piston; the piston comprises a conical head which is connected with the bottom cover in a sliding way, a valve seal which is arranged in the valve body and can selectively block the valve port, and a connecting rod which is connected with the conical head and the valve seal, wherein a gas cavity is formed by the conical head and the bottom cover; the bottom cover is inserted with a connecting air pipe, and the connecting air pipe can drive the valve seal to control the opening and closing of the valve port by controlling the air pressure in the air cavity; the pneumatic valve also comprises a lead screw and an adjusting sleeve in threaded connection with the lead screw; a spring is connected between the adjusting sleeve and the conical head in a pre-compression mode and can push a valve on the piston to seal and block the valve port; the end, extending into the adjusting sleeve, of the screw rod is fixedly connected with the conical head, and the screw rod can drive the valve seal to remove the valve port from being blocked through the conical head;

as a preferred scheme of the utility model, one end of the screw rod facing the conical head is connected with a cutting sleeve; the connecting rod is connected to the conical head in a threaded mode, the end portion, far away from the conical head, of one side of the connecting rod is arranged to be a connecting ball body, and the connecting ball body is arranged in the clamping sleeve and is fixedly connected to a blocking head on the clamping sleeve for limiting.

As the utility model discloses a preferred scheme, the lead screw is stretching out the one end detachably of adjusting collar is connected with the handle, the handle can drive the lead screw is rotatory.

As a preferable aspect of the present invention, the adjusting sleeve includes a pressing plate abutting against the spring, and a connecting threaded sleeve vertically connected to the pressing plate; the outer side wall of the connecting threaded sleeve is connected with the top cover in a threaded mode.

As the preferred scheme of the utility model, the connection swivel nut is in the spiro union of the part that stretches out the top cap has lock nut, be used for with the connection swivel nut locking is in on the top cap.

As the preferred scheme of the utility model, the top cap with it is fixed through bolted connection between the bottom.

As the preferred scheme of the utility model, the quantity of bolt is a plurality of, and is a plurality of the bolt with annular array's mode connect in the top cap reaches the bottom.

As the utility model discloses a preferred scheme, the valve body is established to the tubular structure, wherein the rigid coupling has the baffle in the valve body, the valve port sets up the top position of baffle, just the valve seal can support by in baffle and shutoff the valve port.

As a preferred scheme of the utility model, the valve body is provided with a connecting convex ring at the periphery of the valve port, and the valve body is connected and fixed with the bottom cover through the connecting convex ring; the valve seal is arranged in the connecting convex ring of the valve body and is in clearance fit with the inner wall of the connecting convex ring, and the end face of one side, facing the valve port, of the valve seal is an arc surface.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage:

the utility model provides a pneumatic valve, available spiro union are in the precompression volume of the adjusting collar adjustment spring of lead screw to this realizes that the adjusting collar is spacing to the spring, makes this pneumatic valve can directly dismantle the top cap from the bottom, so that the dismantlement between top cap and the bottom of being convenient for, makes this pneumatic valve convenient operation, and is efficient, has the effect that reduces workman intensity of labour.

Drawings

Fig. 1 is a schematic structural diagram of a pneumatic valve according to an embodiment of the present invention.

Fig. 2 is an enlarged view of a portion P of fig. 1.

Fig. 3 is a cross-sectional view of an adjustment sleeve in the pneumatic valve of fig. 1.

10, a valve body; 11. a valve port; 12. a baffle plate; 13. connecting the convex ring; 20. a bottom cover; 21. connecting an air pipe; 22. a connecting portion; 30. a top cover; 40. a piston; 41. a conical head; 411. a limiting boss; 412. a connecting rod; 413. connecting the spheres; 42. valve sealing; 43. a connecting rod; 50. a lead screw; 51. a card sleeve; 52. a stopper; 53. a handle; 60. an adjusting sleeve; 61. pressing a plate; 62. connecting a threaded sleeve; 63. a hexagonal screwing head; 64. locking the nut; 70. a spring; 101. a gas chamber; 102. a mold cavity.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1-3, a pneumatic valve according to an embodiment of the present invention includes a valve body 10 having a valve port 11, a bottom cover 20 fixed to the valve body 10, a top cover 30 fixed to the bottom cover 20, and a piston 40.

The top cover 30 and the bottom cover 20 are fixed by bolts (not shown), and the top cover 30 can be detached from the bottom cover 20 according to the use requirement.

Specifically, the number of the bolts is plural, and the plural bolts are connected to the top cover 30 and the bottom cover 20 in a circular array.

In the present embodiment, the piston 40 includes a conical head 41 slidably connected to the bottom cover 20, a valve seal 42 disposed in the valve body 10 and capable of selectively blocking the valve port 11, and a connecting rod 43 connecting the conical head 41 and the valve seal 42, wherein the conical head 41 and the bottom cover 20 together form a gas chamber 101; the bottom cover 20 is inserted with a connecting air pipe 21, and the connecting air pipe 21 can drive the valve seal 42 to control the opening and closing of the valve port 11 by controlling the air pressure in the air cavity 101, so as to realize the pneumatic control of the pneumatic valve during working. It should be noted that the portion of the valve seal 42 for blocking the valve port 11 has certain elasticity, and when the conical head 41 is matched with the conical surface of the bottom cover 20, the valve seal 42 can block the valve port 11.

In the present embodiment, the valve body 10 is provided with a tubular structure, wherein a baffle 12 is fixed inside the valve body 10, the valve port 11 is disposed at a position above the baffle 12, and the valve seal 42 can abut against the baffle 12 and seal off the valve port 11. That is, the upper conical head 41 of the piston 40 of the present embodiment moves downward with respect to the bottom cover 20, and the valve port 11 can be closed by the valve seal 42.

Specifically, the valve body 10 of the present embodiment is provided with a connecting convex ring 13 on the periphery of the valve port 11, and the valve body 10 is connected and fixed with the bottom cover 20 through the connecting convex ring 13; the valve seal 42 is arranged in the connecting convex ring 13 of the valve body 10 and is in clearance fit with the inner wall of the connecting convex ring 13, and the assembly sealing between the valve seal 42 and the connecting convex ring 13 is realized; the end surface of the valve seal 42 facing the valve port 11 is a circular arc surface, so as to ensure that the valve seal 42 blocks the valve port 11. The bottom cover 20 has a connecting portion 22 that is engaged with the connecting convex ring 13, the connecting convex ring 13 is engaged with the connecting portion 22 by means of bolts and nuts, and the connecting rod 43 penetrates through the bottom cover 20 and is connected and fixed with the valve seal 42 disposed in the cavity 102, and the cavity 102 is configured to accommodate the valve seal 42.

In the present embodiment, the pneumatic valve of the present embodiment further includes a lead screw 50, and an adjusting sleeve 60 screwed to the lead screw 50; a spring 70 is connected between the adjusting sleeve 60 and the conical head 41 in a pre-compression manner, one end of the lead screw 50 extending into the adjusting sleeve 60 is connected and fixed with the conical head 41, and the lead screw 50 can drive the valve seal 42 through the conical head 41 to remove the blockage of the valve port 11. That is, the spring 70 of the present embodiment can push the valve seal 42 on the piston 40 to close the valve port 11, and the lead screw 50 can pull the piston 40 and release the valve seal 42 on the piston 40 from closing the valve port 11.

Specifically, one end of the screw 50 facing the conical head 41 is connected with a cutting sleeve 51; the conical head 41 is screwed with a connecting rod 411, the connecting rod 411 is provided with a connecting ball 412 at the end part of one side far away from the conical head 41, and the connecting ball 412 is arranged in the cutting sleeve 51 and is used for limiting by a stopper 52 fixedly connected to the cutting sleeve 51.

Further, a handle 53 is detachably connected to the lead screw 50, and the handle 53 can drive the lead screw 50 to rotate, so as to drive the lead screw 50 to rotate relative to the adjusting sleeve 60. In the present embodiment, a hexagonal nut may be provided at the tip of the screw 50 to be engaged with the handle 53, a hexagonal sleeve may be correspondingly provided on the handle 53, and the handle 53 may be assembled to the screw 50 by engagement between the hexagonal nut and the hexagonal sleeve.

Wherein, the lead screw 50 is connected with the adjusting sleeve 50 in a threaded manner; the lead screw 50 is connected and fixed with the conical head 41 through the clamping sleeve 51 and the connecting rod 411, so that in the process of detaching the top cover 30 from the bottom cover 20, the adjusting sleeve 50 can limit the spring 70 by utilizing the threaded fit between the adjusting sleeve and the lead screw 50, and further the spring 70 is prevented from bouncing off the top cover 30.

In the present embodiment, the adjusting sleeve 60 includes a pressing plate 61 abutting against the spring 70, and a connecting screw sleeve 62 vertically connected to the pressing plate 61; the outer side wall of the coupling screw 62 is screw-coupled to the top cap 30. When the pneumatic valve of the present embodiment is integrally assembled, the pressing plate 61 of the adjusting sleeve 60 abuts against the top cover 30 upwards, so that the spring 70 disposed between the pressing plate 61 and the conical head 41 is assembled without being compressed by the pressing plate 61 on the adjusting sleeve 60, and then the connecting screw sleeve 62 is screwed, and the connecting screw sleeve 62 drives the pressing plate 61 to press down the spring 70, so that the spring 70 drives the valve seal 42 on the piston 40 to close the valve port 11. When the top cover 30 is detached from the bottom cover 20, the spring 70 is pressed on the conical head 41 by the upper pressing plate 61 of the adjusting sleeve 60, the connecting threaded sleeve 62 on the adjusting sleeve 60 is in threaded connection with the lead screw 50, and the lead screw 50 is limited on the conical head 41 through the connecting rod 411, so that the top cover 30 can be directly detached from the bottom cover 20, and the detachment between the top cover 30 and the bottom cover 20 is facilitated.

Further, the adjusting sleeve 60 of the present embodiment is provided with a hexagonal screw head 63 at an end portion extending out of the top cover 30, and the hexagonal screw head 63 can be used to realize the rotational driving of the adjusting sleeve 60, so as to facilitate the rotational driving of the adjusting sleeve 50. When the piston 40 is driven to ascend by the lead screw 70 and the valve port 11 is opened in the present embodiment, a wrench may be used to act on the hexagonal screwing head 63 to limit the rotation of the adjusting sleeve 50, and then the handle 73 is screwed, so as to manually open the valve port 11 by the lead screw 70.

A locking nut 64 is screwed to a portion of the connection screw 62 extending out of the top cover 30, so as to lock the connection screw 62 to the top cover 30. After the adjusting sleeve 60 compresses the spring 70 and the valve seal 42 on the piston 40 blocks the valve port 11, the locking nut 64 can be used to limit the adjusting sleeve 60 on the top cover 30 to prevent the adjusting sleeve 60 from being released from the top cover 30.

As can be seen from the above, when the air-operated valve of the present embodiment is operated, the spring 70 pushes the piston 40, and drives the valve seal 42 on the piston 40 to close the valve port 11, thereby blocking the fluid flow in the valve body 10. When the valve port 11 in the valve body 10 needs to be opened and the communication of the fluid flow in the valve body 10 is realized, the present embodiment can realize the pneumatic driving of the piston 40 through the connecting air pipe 21 according to the use requirement; or the piston 40 is pulled up by the lead screw 50 through the connecting rod 411. That is, the air-operated valve of the present embodiment can ensure manual driving during operation by pulling up and driving the piston 40 with the lead screw 50 during operation. It should be noted that, of course, the connection between the top cover 30 and the bottom cover 20 of the present embodiment can be disassembled according to the requirement of pulling the lead screw 50 and the adjusting sleeve 50, and will not be described herein.

To sum up, the utility model provides a pneumatic valve, available spiro union are in the precompression volume of the adjusting collar adjustment spring of lead screw to this realizes that the adjusting collar is spacing to the spring, makes this pneumatic valve can directly dismantle the top cap from the bottom, with this be convenient for the dismantlement between top cap and the bottom, makes this pneumatic valve convenient operation, and is efficient, has the effect that reduces workman intensity of labour.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A pneumatic valve comprises a valve body with a valve port, a bottom cover fixedly connected with the valve body, a top cover fixedly connected with the bottom cover, and a piston; the piston comprises a conical head which is connected with the bottom cover in a sliding way, a valve seal which is arranged in the valve body and can selectively block the valve port, and a connecting rod which is connected with the conical head and the valve seal, wherein a gas cavity is formed by the conical head and the bottom cover; the bottom cover is inserted with a connecting air pipe, and the connecting air pipe can drive the valve seal to control the opening and closing of the valve port by controlling the air pressure in the air cavity; the method is characterized in that: the pneumatic valve also comprises a lead screw and an adjusting sleeve in threaded connection with the lead screw; a spring is connected between the adjusting sleeve and the conical head in a pre-compression mode and can push a valve on the piston to seal and block the valve port; the end, extending into the adjusting sleeve, of the screw rod is fixedly connected with the conical head, and the screw rod can drive the valve seal to remove the valve port from being blocked through the conical head.

2. A pneumatic valve as set forth in claim 1, wherein: one end of the screw rod, which faces the conical head, is connected with a clamping sleeve; the connecting rod is connected to the conical head in a threaded mode, the end portion, far away from the conical head, of one side of the connecting rod is arranged to be a connecting ball body, and the connecting ball body is arranged in the clamping sleeve and is fixedly connected to a blocking head on the clamping sleeve for limiting.

3. A pneumatic valve as set forth in claim 2, wherein: the one end detachably of lead screw stretching out adjusting collar is connected with the handle, the handle can drive the lead screw is rotatory.

4. A pneumatic valve as set forth in claim 1, wherein: the adjusting sleeve comprises a pressing plate which is abutted against the spring and a connecting threaded sleeve which is vertically connected with the pressing plate; the outer side wall of the connecting threaded sleeve is connected with the top cover in a threaded mode.

5. A pneumatic valve as set forth in claim 4, wherein: the part of the connecting screw sleeve extending out of the top cover is screwed with a locking nut to lock the connecting screw sleeve on the top cover.

6. A pneumatic valve as set forth in claim 1, wherein: the top cover and the bottom cover are fixedly connected through bolts.

7. A pneumatic valve as set forth in claim 6, wherein: the number of the bolts is multiple, and the bolts are connected to the top cover and the bottom cover in an annular array mode.

8. A pneumatic valve as set forth in claim 1, wherein: the valve body is of a tubular structure, a baffle is fixedly connected in the valve body, the valve port is arranged above the baffle, and the valve seal can abut against the baffle and seal the valve port.

9. A pneumatic valve as set forth in claim 8, wherein: the valve body is provided with a connecting convex ring at the periphery of the valve port, and the valve body is fixedly connected with the bottom cover through the connecting convex ring; the valve seal is arranged in the connecting convex ring of the valve body and is in clearance fit with the inner wall of the connecting convex ring, and the end face of one side, facing the valve port, of the valve seal is an arc surface.