Pneumatic self-locking bell valve

Abstract

The utility model provides a pneumatic self-locking clock valve, and belongs to the technical field of pneumatic clock valves. The problem that a feeding port is prone to being accidentally opened is solved. According to the technical scheme, the pneumatic self-locking clock valve comprises a valve body, a valve shaft is arranged on the valve body, a swing arm is arranged at one end of the valve shaft, and a self-locking device is arranged at the lower end of the swing arm; the self-locking device comprises a driving assembly and a driven assembly; the driving assembly comprises an air cylinder, a coupling, a sliding block and a lock, the coupling is connected to a telescopic rod of the air cylinder, the sliding block is rotationally connected to the end of the coupling, and the lock is connected to the lower end of the swing arm; an inclined block is arranged on the lower portion of the sliding block, the side wall of one side of the lock head is an inclined wall, a sliding shaft is arranged on the side wall of the swing arm, and a sliding groove is formed in the sliding block. The driven assembly comprises a clamping block, a mounting base, an ejector rod and a spring, the clamping block is rotationally connected to the mounting base, the ejector rod is located below the clamping block, and the spring is fixed below the ejector rod; the upper end face of the clamping block is arranged to be an inclined face, and a matching head is arranged on the clamping block. The feeding device has the advantage that the feeding port is prevented from being opened accidentally.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic clock valves, in particular to a pneumatic self-locking clock valve. Background Art

[0002] Pneumatic bell valve is a flow diversion and confluence or flow direction switching device, mostly used as a flow diversion and confluence or flow direction switching device for media in pipelines.

[0003] In the prior art, a bell valve includes a valve body with an inlet provided at the upper end of the valve body, a valve shaft passing through the valve body, one end of the valve shaft extending out of the valve body is connected to a swing arm, a cylinder is provided on one side of the valve body, and the telescopic rod of the cylinder is rotatably connected to the swing arm; a valve plate for closing the inlet of the valve body is connected to the part of the valve shaft located inside the valve body, and the valve plate is vertically arranged to the swing arm. When the cylinder is started, the swing arm is pushed to rotate upward, driving the valve shaft to rotate, and further driving the valve plate to rotate downward, thereby opening the inlet of the valve body, and otherwise closing the inlet.

[0004] When the cylinder drives the swing arm to make the valve plate close the feed inlet, the swing arm is prone to swing under the action of external force, causing the valve plate to rotate unexpectedly, resulting in the feed inlet being accidentally opened. Summary of the Invention

[0005] The utility model aims to provide a pneumatic self-locking bell valve which can prevent the valve body feed port from accidentally opening.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] A pneumatic self-locking bell valve comprises a valve body, a valve shaft is provided on the valve body, the valve shaft passes through the valve body, a swing arm is provided at one end of the valve shaft passing through the valve body, and a self-locking device is provided at the lower end of the swing arm;

[0008] The self-locking device includes an active component and a passive component;

[0009] The active component includes a cylinder, a coupling, a slider and a lock head. The cylinder is connected to one side of the valve body, the coupling is connected to the telescopic rod of the cylinder, the slider is rotatably connected to the end of the coupling, and the lock head is connected to the lower end of the swing arm;

[0010] The lower part of the slider is provided with an inclined block, the side wall of one side of the locking block is an inclined wall, the side wall of the swing arm is provided with a sliding shaft, the slider is provided with a sliding groove, the sliding shaft is inserted into the sliding groove and can move along the length direction of the sliding groove;

[0011] The passive component includes a clamping block, a mounting seat, a push rod and a spring. The mounting seat is fixed to one side of the valve body. The clamping block is rotatably connected to the mounting seat. The push rod is located below the clamping block and passes through the mounting seat to lift the clamping block for rotation. The spring is fixed below the push rod to push the push rod.

[0012] A slot is provided on the card block, and the lower end of the lock head is used to be inserted into the slot. The upper end surface of the card block close to the lock head is set as an inclined surface for cooperating with the inclined wall of the lock head. A matching head is provided on the card block for cooperating with the inclined block.

[0013] Furthermore, the mating head is configured as a roller, and the mating head is rotatably connected to the clamping block.

[0014] Furthermore, a fixing seat is connected below the mounting seat, the fixing seat is connected to the valve body, and the push rod passes through the fixing seat.

[0015] Furthermore, the mounting seat is connected to a mounting sleeve for inserting and installing the push rod and the spring, the mounting sleeve passes through the mounting seat and the fixing seat, and the lower end of the mounting sleeve is connected to a cover plate for sealing the lower end of the mounting sleeve.

[0016] Furthermore, a limit block is provided at the lower end of the push rod, the diameter of the limit block is larger than the diameter of the push rod, a limit platform is provided on the inner wall of the mounting sleeve, and the limit platform is used to cooperate with the limit block; the limit block is tightly pressed against the upper end of the spring.

[0017] Furthermore, one end of the mounting seat is connected to a bolt, and the bolt is used to limit the horizontal movement of the block.

[0018] Furthermore, a limiting hole is formed on the end wall of the clamping block close to the bolt, and the bolt is inserted into the limiting hole.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. The cylinder contracts and drives the coupling and slider to retract, causing the swing arm to drive the lock head to rotate downward. When the lock head moves to contact the block, the inclined wall of the lock head and the inclined surface of the block cooperate to push the lock head to rotate downward and push the push rod downward to compress the spring. When the lock head continues to move to the slot position, the block rotates upward and resets under the action of the spring, causing the lock head to insert into the slot, thereby limiting the lock head and further limiting the swing arm to prevent the swing arm from accidentally rotating and causing the feed port to open.

[0021] 2. After the clamping block locks the swing arm, install the bolt on one side of the clamping block and insert it into the limit hole, pressing it against the bottom wall of the limit hole to prevent accidental movement of the clamping block and improve the stability of the clamping block locking the swing arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0023] Figure 1This is a structural schematic diagram of a pneumatic self-locking bell valve in an embodiment of the present utility model.

[0024] Figure 2 for Figure 1 Enlarged schematic diagram of part A.

[0025] Figure 3 This is a schematic diagram of the internal structure of a pneumatic self-locking bell valve in an embodiment of the present utility model.

[0026] Among them, the figures are marked as: 1. valve body; 11. valve shaft; 12. swing arm; 13. valve plate; 14. feed port; 121. slide shaft; 2. active component; 21. cylinder; 22. coupling; 23. slider; 24. lock head; 231. bevel block; 232. slide groove; 3. passive component; 31. clamping block; 32. mounting seat; 33. push rod; 34. spring; 311. clamping slot; 312. mating head; 313. limit hole; 321. bolt; 331. limit block; 4. fixing seat; 5. mounting sleeve; 51. cover plate; 52. limit platform. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. Of course, the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] See also Figure 1-3 The utility model provides a technical solution of a pneumatic self-locking bell valve, comprising a valve body 1, a material inlet 14 being provided at the upper end of the valve body 1, a valve shaft 11 being provided on the valve body 1, the valve shaft 11 passing through the valve body 1, a swing arm 12 being provided at one end of the valve shaft 11 passing through the valve body 1, a valve plate 13 for closing the material inlet 14 of the valve body 1 being connected to the part of the valve shaft 11 located inside the valve body 1, the valve plate 13 being arranged perpendicular to the swing arm 12, a self-locking device being provided at the lower end of the swing arm 12, and the self-locking device comprising an active component 2 and a passive component 3.

[0029] Preferably, the active component 2 includes a cylinder 21, a coupling 22, a slider 23 and a lock 24. The cylinder 21 is fixedly connected to one side of the valve body 1, the coupling 22 is fixedly connected to the telescopic rod of the cylinder 21, the slider 23 is rotatably connected to the end of the coupling 22, and the lock 24 is fixedly connected to the lower end of the swing arm 12; the lower part of the slider 23 is integrally formed with an inclined block 231, the side wall of the inclined block 231 is an inclined surface, and the side wall of one side of the lock 24 is an inclined wall. Two sliding shafts 121 are provided on the side wall of the swing arm 12, and a sliding groove 232 is opened on the slider 23. The sliding shaft 121 is inserted into the sliding groove 232 and can move along the length direction of the sliding groove 232.

[0030] Preferably, the passive component 3 includes a clamping block 31, a mounting seat 32, a push rod 33 and a spring 34. A fixing seat 4 is fixedly connected to one side of the valve body 1. The mounting seat 32 is connected to the fixing seat 4. The clamping block 31 is rotatably connected to the mounting seat 32. A mounting sleeve 5 is connected to the mounting seat 32. The upper end wall of the mounting sleeve 5 is flush with the mounting seat 32, and the lower end passes through the mounting seat 32 and the fixing seat 4. A cover plate 51 is connected to the lower end of the mounting sleeve 5. The cover plate 51 can seal the lower end of the mounting sleeve 5. The upper end of the mounting sleeve 5 is open. The spring 34 and the push rod 33 are installed in the mounting sleeve 5, and the lower end of the spring 34 is pressed against the cover plate 51.

[0031] Preferably, the lower end of the push rod 33 is fixedly connected to the limiting block 331 , the diameter of the limiting block 331 is larger than the diameter of the push rod 33 , the inner wall of the mounting sleeve 5 is integrally formed with a limiting platform 52 , and the limiting block 331 is tightly pressed against the upper end of the spring 34 .

[0032] Preferably, one end of the mounting seat 32 is vertically connected to a connecting plate, a bolt 321 is threadedly connected to the connecting plate, and a limiting hole 313 is defined on the end wall of the clamping block 31 close to the bolt 321 .

[0033] Preferably, the block 31 is provided with a mating head 312, which is configured as a roller and is rotatably connected to the block 31. When installing the ejector pin 33 and the spring 34, the cover 51 is opened, and the ejector pin 33 and the spring 34 are sequentially installed into the mounting sleeve 5. The stopper 52 can limit the position of the stop block 331 to prevent the ejector pin 33 from falling out of the other end of the mounting sleeve 5.

[0034] When the lock head 24 is in the state of being closed, the spring 34 will extend and drive the push rod 33 to push up the block 31, causing the block 31 to rotate upward and return to its original position, thereby allowing the lock head 24 to be inserted into the slot 311, and the side wall of the lock head 24 will be in contact with the inner wall of the slot 311, thereby limiting the lock head 24 and further limiting the swing arm 12, preventing the swing arm 12 from accidentally rotating and causing the feed port 14 to open.

[0035] After the block 31 is locked, the bolt 321 is installed on the mounting plate and screwed into the limiting hole 313 to press against the bottom wall of the limiting hole 313 , thereby limiting the block 31 from accidental rotation and horizontal movement.

[0036] When the cam 23 is in the closed position, the spring 321 is in the closed position, and the spring 322 is in the closed position, so that the cam 23 is in the closed position, and the spring 323 is in the closed position, so that the cam 23 is in the closed position, and the spring 324 is in the closed position, so that the cam 23 is in the closed position, and the cam 325 is in the closed position, so that the cam 326 is in the closed position, and the cam 327 is in the closed position, so that the cam 327 is in the closed position, and the cam 328 is in the closed position, so that the cam 328 is in the closed position,

[0037] After the lock head 24 moves away from the block 31, the elastic force of the spring 34 pushes the push rod 33 to move upward. After the limit block 331 moves upward synchronously until it contacts the limit platform 52, the push rod 33 stops moving and the block 31 stops rotating, avoiding excessive rotation of the block 31, which causes the inclined surface of the block 31 to be misaligned with the inclined wall of the lock head 24 and difficult to match.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pneumatic self-locking bell valve, comprising a valve body (1), a valve shaft (11) being provided on the valve body (1), the valve shaft (11) passing through the valve body (1), and a swing arm (12) being provided at one end of the valve shaft (11) passing through the valve body (1), characterized in that: The lower end of the swing arm (12) is provided with a self-locking device; The self-locking device comprises an active component (2) and a passive component (3); The active component (2) comprises a cylinder (21), a coupling (22), a slider (23) and a lock (24), wherein the cylinder (21) is connected to one side of the valve body (1), the coupling (22) is connected to the telescopic rod of the cylinder (21), the slider (23) is rotatably connected to the end of the coupling (22), and the lock (24) is connected to the lower end of the swing arm (12); The lower part of the slider (23) is provided with an inclined block (231), the side wall of one side of the lock head (24) is an inclined wall, the side wall of the swing arm (12) is provided with a sliding shaft (121), and the slider (23) is provided with a sliding groove (232), and the sliding shaft (121) is inserted into the sliding groove (232) and can move along the length direction of the sliding groove (232); The passive component (3) comprises a clamping block (31), a mounting seat (32), a push rod (33) and a spring (34); the mounting seat (32) is fixed to one side of the valve body (1); the clamping block (31) is rotatably connected to the mounting seat (32); the push rod (33) is located below the clamping block (31) and passes through the mounting seat (32) to lift the clamping block (31) for rotation; the spring (34) is fixed below the push rod (33) to push the push rod (33); A card slot (311) is provided on the card block (31), and the lower end of the lock head (24) is used to be inserted into the card slot (311). The upper end surface of the card block (31) close to the lock head (24) is set as an inclined surface for cooperating with the inclined wall of the lock head (24). A matching head (312) is provided on the card block (31) for cooperating with the inclined block (231).

2. A pneumatic self-locking bell valve according to claim 1, characterized in that: The mating head is configured as a roller, and the mating head is rotatably connected to the clamping block (31).

3. The pneumatic self-locking bell valve according to claim 1, characterized in that: A fixing seat (4) is connected below the mounting seat (32), the fixing seat (4) is connected to the valve body (1), and the push rod (33) passes through the fixing seat (4).

4. A pneumatic self-locking bell valve according to claim 3, characterized in that: The mounting seat (32) is connected to a mounting sleeve (5) for inserting and installing a push rod (33) and a spring (34); the mounting sleeve (5) passes through the mounting seat (32) and the fixing seat (4); and the lower end of the mounting sleeve (5) is connected to a cover plate (51) for sealing the lower end of the mounting sleeve (5).

5. The pneumatic self-locking bell valve according to claim 4, characterized in that: A limit block (331) is provided at the lower end of the push rod (33), the diameter of the limit block (331) being larger than the diameter of the push rod (33), a limit platform (52) is provided on the inner wall of the mounting sleeve (5), and the limit platform (52) is used to cooperate with the limit block (331); the limit block (331) is tightly pressed against the upper end of the spring (34).

6. The pneumatic self-locking bell valve according to claim 1, characterized in that: One end of the mounting seat (32) is connected to a bolt (321), and the bolt (321) is used to limit the horizontal movement of the clamping block (31).

7. The pneumatic self-locking bell valve according to claim 6, characterized in that: The clamping block (31) is provided with a limiting hole (313) on an end wall close to the bolt (321), and the bolt (321) is inserted into the limiting hole (313).

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