Pneumatic butterfly valve

Abstract

The utility model relates to the technical field of pneumatic butterfly valves, in particular to a pneumatic butterfly valve which comprises a pneumatic butterfly valve body, one end of the pneumatic butterfly valve body is fixedly connected with a first circular plate, a first rubber ring and a second rubber ring are attached to one end of the first circular plate, and a second circular plate is attached to one end of the first rubber ring and one end of the second rubber ring. A pipeline is fixedly connected to one end of the second circular plate, a connecting structure is arranged on one side of the second circular plate and comprises a rod body, and one end of the rod body is fixedly connected with the outer side of one end of the second circular plate. Through cooperation of the pneumatic butterfly valve body, the pipeline, the first round plate, the second round plate and the connecting structure, the rod body is inserted into the inner wall of one side of the first round plate, the lead screw is rotated, the lead screw drives the transverse block to move inwards, the transverse block drives the round rod to move inwards, then the round rod enters the inner wall of the inclined groove of the rod body, and connection of the first round plate and the second round plate is achieved. And a worker can conveniently and rapidly connect the pneumatic butterfly valve body with a pipeline, and operation of the worker is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to pneumatic butterfly valve technical field, concretely is a kind of pneumatic butterfly valve. BACKGROUND

[0002] Pneumatic butterfly valve is composed of pneumatic actuator and butterfly valve, and the pneumatic butterfly valve is a pneumatic valve using a circular butterfly plate rotating with the valve rod to open and close, to realize the opening and closing action, mainly used as a shut-off valve.

[0003] The prior art pneumatic butterfly valve (application number: 202323269771.4) can guide the fluid and impurities such as slag in the large pressure conveying pipeline to the limit position during the closing process, so that the butterfly plate and the sealing ring are not impacted and rubbed with the surface of the butterfly plate and the sealing ring, thereby avoiding wear of the butterfly plate and the sealing ring, and ensuring the sealing performance after long-term use. However, the above-mentioned still has the following problems: when using the pneumatic butterfly valve, it is necessary to connect the pneumatic butterfly valve with the external pipeline, and to control the flow of medium by opening and closing the pneumatic butterfly valve. However, when connecting the pneumatic butterfly valve with the pipeline, it is often fixed by a plurality of bolts and nuts, which is relatively troublesome to operate. It is necessary to align a plurality of threaded holes and tighten the nuts one by one. It is not convenient for the workers to quickly connect the pneumatic butterfly valve with the pipeline, and it is not convenient for the workers to operate. In addition, when connecting the pneumatic butterfly valve with the pipeline, it is necessary to seal the connection position, and it is not convenient to double-seal the connection position, and the sealing effect is poor. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the problems in the prior art that it is not convenient for workers to quickly connect the pneumatic butterfly valve with the pipeline, it is not convenient for workers to operate, it is not convenient to double-seal the connection position, and the sealing effect is poor, and provides a pneumatic butterfly valve.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A pneumatic butterfly valve is designed, which comprises a pneumatic butterfly valve body, one end of the pneumatic butterfly valve body is fixedly connected with a circular plate one, one end of the circular plate one is attached with a rubber ring one and a rubber ring two, one end of the rubber ring one and the rubber ring two is attached with a circular plate two, one end of the circular plate two is fixedly connected with a pipeline, one side of the circular plate two is provided with a connecting structure.

[0007] Preferably, the connecting structure comprises a rod body, one end of the rod body is fixedly connected with the outer side of one end of the second circular plate, the outer wall of the rod body is in gap fit with the inner wall of one side of the first circular plate, the oblique groove of one side of the rod body is in gap fit with the circular rod, one end of the circular rod is fixedly connected with a cross piece, the outer wall of one side of the cross piece is in gap fit with the recess of one side of the inner wall of the cylinder, the outer wall of one side of the cylinder is fixedly connected with the outer side of one end of the first circular plate, one end of the cross piece is rotatably connected with a lead screw through a bearing, and the outer wall of one side of the lead screw is in screw connection with the inner wall of one end of the cylinder.

[0008] Preferably, the inner wall of one side of the pneumatic butterfly valve body is fixedly connected with a filter screen.

[0009] Preferably, the bottom of one side of the pneumatic butterfly valve body is fixedly connected with a vertical cylinder.

[0010] Preferably, the inner wall of the bottom of the vertical cylinder is in screw connection with a piston.

[0011] The pneumatic butterfly valve has the advantages that: through the cooperation of the pneumatic butterfly valve body, the pipeline, the first circular plate, the second circular plate and the connecting structure, the rod body can be inserted into the inner wall of one side of the first circular plate, the lead screw is rotated, the cross piece is driven to move inward, the circular rod is driven to move inward, the circular rod enters the oblique groove of the rod body, the first circular plate and the second circular plate are connected, the pneumatic butterfly valve body and the pipeline can be quickly connected by the staff, and the staff can operate conveniently.

[0012] Through the cooperation of the pneumatic butterfly valve body, the first circular plate, the second circular plate, the pipeline, the rubber ring one and the rubber ring two, the rubber ring one and the rubber ring two can be clamped by the first circular plate and the second circular plate, the rubber ring one and the rubber ring two are fixed, the connection position can be double sealed, and the sealing effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is a structural schematic view of the utility model;

[0014] Fig. 2 It is a structure schematic view of the pneumatic butterfly valve body, the first circular plate and the filter screen of the utility model;

[0015] Fig. 3 It is a structure schematic view of the lead screw, the cross piece and the circular rod of the utility model;

[0016] Fig. 4 It is a structure schematic view of the rubber ring one, the rubber ring two and the circular block of the utility model;

[0017] Fig. 5 It is a structure schematic view of the first circular plate, the rod body and the circular rod of the utility model;

[0018] Fig. 6 The vertical cylinder and piston structure schematic diagram of the utility model.

[0019] In the drawing: 1, pneumatic butterfly valve body, 2, connecting structure, 2a1, cylinder, 2a2, screw rod, 2a3, rod, 2a4, cross block, 2a5, round rod, 2b1, round block, 3, round plate one, 4, round plate two, 5, rubber ring one, 6, rubber ring two, 7, pipeline, 8, filter screen, 9, vertical cylinder, 10, piston. DETAILED DESCRIPTION

[0020] The utility model is further described below in combination with the drawings:

[0021] Example 1: refer to the drawings Figs. 1-6 In this embodiment, a kind of pneumatic butterfly valve, including pneumatic butterfly valve body 1, the one end of pneumatic butterfly valve body 1 is fixedly connected with round plate one 3, and the one end of round plate one 3 is attached with rubber ring one 5 and rubber ring two 6, and the one end of rubber ring one 5 and rubber ring two 6 is attached with round plate two 4, and rubber ring one 5 and rubber ring two 6 play the role of sealing, and the one end of round plate two 4 is fixedly connected with pipeline 7, and the inner wall of pneumatic butterfly valve body 1 one side is fixedly connected with filter screen 8.

[0022] The material and mesh number of filter screen 8 are determined according to actual use, and the bottom one side of pneumatic butterfly valve body 1 is fixedly connected with vertical cylinder 9, and the bottom inner wall of vertical cylinder 9 is threadedly connected with piston 10, and piston 10 plays the role of sealing, and the side of round plate two 4 is equipped with connecting structure 2, and connecting structure 2 is convenient for staff to quickly connect pneumatic butterfly valve body 1 with pipeline 7, and it is convenient for staff to operate.

[0023] Connecting structure 2 includes rod 2a3, and the one end of rod 2a3 is fixedly connected with the one end outer side of round plate two 4, and the outer wall one side of rod 2a3 is gap fit with the one side inner wall of round plate one 3, and rod 2a3 can move left and right on the one side inner wall of round plate one 3 when being stressed, and the one side inclined groove of rod 2a3 is gap fit with round rod 2a5, and the one end of round rod 2a5 is fixedly connected with cross block 2a4, and the outer wall one side of cross block 2a4 is gap fit with the inner wall one side recess of cylinder 2a1.

[0024] The inner wall one side recess of cylinder 2a1 plays the role of limiting when cross block 2a4 is stressed to move up and down, and the outer wall one side of cylinder 2a1 is fixedly connected with the one end outer side of round plate one 3, and the one end of cross block 2a4 is rotatably connected with screw rod 2a2 through bearing, and the outer wall one side of screw rod 2a2 is threadedly connected with the one end inner wall of cylinder 2a1, and it is convenient for staff to quickly connect pneumatic butterfly valve body 1 with pipeline 7, and it is convenient for staff to operate.

[0025] Working principle:

[0026] When pneumatic butterfly valve body 1 is used:

[0027] The rubber ring one 5 and the rubber ring two 6 are arranged between the round plate one 3 and the round plate two 4, the rod body 2a3 is inserted into the inner wall of one side of the round plate one 3, the screw rod 2a2 is rotated, the cross block 2a4 is driven to move inward, the round rod 2a5 is driven to move inward, the round rod 2a5 is further arranged in the inclined slot inner wall of the rod body 2a3, the connection of the round plate one 3 and the round plate two 4 is realized, the connection of the pneumatic butterfly valve body 1 and the pipeline 7 is realized, when the medium flows in the pneumatic butterfly valve body 1 and the pipeline 7, the filter screen 8 can filter the impurities in the medium, at this time, the filtered impurities fall into the inside of the vertical cylinder 9, when the medium conveying is stopped, the piston 10 can be rotated to take out the impurities.

[0028] Embodiment 2: refer to the attached Figs. 1-6 In the embodiment, the connecting structure 2 can further include a round block 2b1, one end of the round block 2b1 on the outer side is fixedly connected with the left and right two ends of the rubber ring two 6 respectively, one end of the round block 2b1 on the inner side is fixedly connected with the left and right two ends of the rubber ring one 5 respectively, and the round blocks 2b1 on the left and right sides are respectively matched with the outer side groove of one end of the round plate two 4 and the outer side groove of one end of the round plate one 3.

[0029] Working principle:

[0030] The round block 2b1 is inserted into the groove inner wall of the round plate one 3 and the round plate two 4, and the positioning of the rubber ring one 5 and the rubber ring two 6 is realized, so that the deviation of the rubber ring one 5 and the rubber ring two 6 is avoided, and the sealing effect is influenced.

[0031] Although the utility model has been illustrated and described by referring to the preferred embodiments, it should be understood by those skilled in the art that various changes in form and details can be made within the scope of claims.

Claims

1. A pneumatic butterfly valve comprising a pneumatic butterfly valve body (1), characterized in that: One end of the pneumatic butterfly valve body (1) is fixedly connected with a round plate one (3), one end of the round plate one (3) is attached with a rubber ring one (5) and a rubber ring two (6), one end of the rubber ring one (5) and the rubber ring two (6) is attached with a round plate two (4), one end of the round plate two (4) is fixedly connected with a pipeline (7), one side of the round plate two (4) is provided with a connecting structure (2).

2. A pneumatic butterfly valve according to claim 1, characterized in that: The connecting structure (2) includes a rod body (2a3), one end of the rod body (2a3) is fixedly connected with one end of the outer side of the round plate two (4), the outer wall of the rod body (2a3) is in clearance fit with the inner wall of one side of the round plate one (3), the oblique slot of one side of the rod body (2a3) is in clearance fit with a round rod (2a5), one end of the round rod (2a5) is fixedly connected with a cross block (2a4), the outer wall of one side of the cross block (2a4) is in clearance fit with the recess of the inner wall of one side of the cylinder (2a1), the outer wall of one side of the cylinder (2a1) is fixedly connected with the outer side of one end of the round plate one (3), one end of the cross block (2a4) is rotatably connected with a lead screw (2a2) through a bearing, the outer wall of one side of the lead screw (2a2) is in screw connection with the inner wall of one end of the cylinder (2a1).

3. The pneumatic butterfly valve according to claim 1, wherein: The inner wall of one side of the pneumatic butterfly valve body (1) is fixedly connected with a filter screen (8).

4. The pneumatic butterfly valve according to claim 1, wherein: The bottom of the pneumatic butterfly valve body (1) is fixedly connected with a vertical cylinder (9).

5. A pneumatic butterfly valve according to claim 4, characterized in that: The bottom inner wall of the vertical cylinder (9) is in screw connection with a piston (10).

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