Pneumatic powder metering valve

Abstract

The utility model discloses a pneumatic powder metering valve which comprises a valve body, a clamping hoop is installed on the valve body in a clamping mode, the clamping hoop comprises a semicircular clamping seat, a first base and a second base which are connected with one another, the first base is provided with a locking handle which is in locking connection with the second base, and the second base is provided with a locking handle which is in locking connection with the locking handle. A limiting assembly used for limiting one side of the locking handle is installed on the second base and comprises a movable baffle, a limiting torsional spring and a positioning rod, the movable baffle and the limiting torsional spring are arranged on the positioning rod in a sleeving mode, and the positioning rod is rotationally arranged on the side, located on the locking handle, of the second base. According to the pneumatic powder metering valve, the problem that the locking handle on the hoop falls off is solved, and the safety of the pneumatic powder metering valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a pneumatic powder metering valve. Background Art

[0002] When processing powdered materials, it is often necessary to use valves to effectively control the flow of powders. Powder valves are often used for control, and most of them use clamps to clamp the valve body. The current clamp connection methods include bolt fastening type and buckle type. The bolt type includes a handle hinged on the base (the other half of the clamp), and the handle is buckled with another clamping seat (the other half of the clamp) and tightened to make the base and the clamping seat clamped against each other to form a seal. When this structure is in use, the handle is loose or hit by other objects, and it is very easy to fall off the clamping seat (the other half of the clamp), thereby causing the valve seal to fail. Utility Model Content

[0003] In view of the above problems, the utility model provides a pneumatic powder metering valve.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pneumatic powder metering valve, comprising a valve body, a clamp is clamped and installed on the valve body, the clamp comprises a semicircular clamping seat, a first base and a second base connected to each other, the first base is provided with a locking handle which forms a locking connection with the second base, the second base is provided with a limiting assembly for limiting one side of the locking handle, the limiting assembly comprises a movable baffle, a limiting torsion spring and a positioning rod, the movable baffle and the limiting torsion spring are sleeved on the positioning rod, and the positioning rod is rotatably arranged on the second base at one side of the locking handle.

[0005] Preferably, a first U-shaped opening is provided on the second base, a rotating groove is provided on one side of the first U-shaped opening, a first through hole and a second through hole connected to the first base are provided at both ends of the rotating groove, a first convex ring and a symmetrical second convex ring are provided on the movable baffle facing the first U-shaped opening, a third through hole and a fourth through hole corresponding to the first through hole and the second through hole are respectively provided on the first convex ring and the second convex ring, and the positioning rod passes through and is rotatably provided on the first through hole, the third through hole, the fourth through hole and the second through hole in sequence.

[0006] Preferably, riveting parts are provided at both ends of the positioning rod, the riveting parts are semicircular in shape and connected to the positioning rod, and the diameter of the riveting parts is larger than the outer diameter of the positioning rod.

[0007] Preferably, a clearance opening is provided between the first convex ring and the second convex ring, and the limit torsion spring is sleeved on the positioning rod and arranged in the clearance opening.

[0008] Preferably, a first extension leg and a second extension leg are provided on the limiting torsion spring, one end of the first extension leg is connected to the limiting torsion spring, and the other end extends toward one side of the movable baffle to form a compression, and one end of the second extension leg is connected to the limiting torsion spring, and the other end extends toward the inner wall of one side of the first U-shaped opening to form a compression.

[0009] Preferably, an abutment panel is extended from the first U-shaped opening toward one side of the movable baffle, and an L-shaped abutment surface matching the abutment panel is formed on the movable baffle.

[0010] Preferably, the locking handle includes a tightening sleeve, a screw and a rotating pin, a second U-shaped opening is provided on the first base, the rotating pin is plugged and installed on the second U-shaped opening, one end of the screw is fixedly connected to the rotating pin and extends toward one side of the first U-shaped opening, the tightening sleeve is provided with a screw hole for forming a threaded connection with the screw, and a yielding slot is provided on the screw, and the yielding slot is located on one side of the movable baffle.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: the tightening sleeve drives the screw to move toward one side of the first U-shaped opening, and when it is pressed against the movable baffle, the thrust is used to cause the movable baffle to rotate clockwise inward through the positioning rod, and at the same time, the limiting spring is pressed against the first extending leg on the movable baffle to transfer the contraction pressure to the second extending leg, and the yielding groove on the screw reduces the installation area of ​​the screw, and when the screw completely enters the first U-shaped opening, the limiting torsion spring releases the contraction pressure, so that the movable baffle is reset and pressed against the abutment panel through the L-shaped abutment surface, which can prevent the locking handle from falling off from the first U-shaped opening after loosening, and has a good limiting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a cross-sectional view of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the locking handle and the limit assembly at another angle of the utility model;

[0014] Figure 3 It is an exploded view of the limit assembly of the utility model;

[0015] Figure 4 This is an exploded view of the structure of the locking handle of the utility model.

[0016] In the figure: 1. valve body; 2. clamp; 3. holder; 4. first base; 5. second base; 8. locking handle; 9. limit assembly; 10. movable baffle; 11. limit torsion spring; 12. positioning rod; 13. first U-shaped opening; 14. rotating groove; 15. first through hole; 16. second through hole; 17. first convex ring; 18. second convex ring; 19. third through hole; 20. fourth through hole; 21. riveting part; 23. clearance opening; 24. first extended leg; 25. second extended leg; 26. abutment panel; 27. L-shaped abutment surface; 28. tightening sleeve; 29. ​​screw; 30. rotating latch; 31. second U-shaped opening; 32. screw hole; 33. clearance slot. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] Example: As attached Figures 1 to 4 The pneumatic powder metering valve shown in the figure comprises a valve body 1, on which a clamp 2 is clamped and installed, and the clamp 2 comprises a semicircular clamp seat 3, a first base 4 and a second base 5 connected to each other, and the first base 4 is provided with a locking handle 8 which is locked and connected with the second base 5, and the second base 5 is provided with a limiting component 9 for limiting one side of the locking handle 8, and the limiting component 9 comprises a movable baffle 10, a limiting torsion spring 11 and a positioning rod 12, and the movable baffle 10 and the limiting torsion spring 11 are sleeved on the positioning rod 12, and the positioning rod 12 is rotatably arranged on the second base 5 on one side of the locking handle 8, and the tightening sleeve 28 drives the screw 29 to the first U shaped opening 13, when it is pressed against the movable baffle 10, the thrust is used to cause the movable baffle 10 to rotate clockwise inward through the positioning rod 12, and at the same time, the limiting spring is pressed against the first extending leg 24 on the movable baffle 10 to transfer the contraction pressure to the second extending leg 25, and the yielding groove 33 on the screw rod 29 reduces the installation area of ​​the screw rod 29. When the screw rod 29 completely enters the first U-shaped opening 13, the limiting torsion spring 11 releases the contraction pressure, so that the movable baffle 10 is reset and pressed against the abutment panel 26 through the L-shaped abutment surface 27, which can prevent the locking handle 8 from falling off from the first U-shaped opening 13 after loosening, and has a good limiting effect.

[0019] As attached Figure 2 and attached Figure 3As shown, a first U-shaped opening 13 is provided on the second base 5, a rotation groove 14 is provided on one side of the first U-shaped opening 13, and a first through hole 15 and a second through hole 16 connected to the first base 4 are provided at both ends of the rotation groove 14. A first convex ring 17 and a symmetrical second convex ring 18 (an integrated structure) are provided on the movable baffle 10 facing the first U-shaped opening 13. A third through hole 19 and a fourth through hole 20 corresponding to the first through hole 15 and the second through hole 16 are respectively provided on the first convex ring 17 and the second convex ring 18. The positioning rod 12 passes through and is rotatably provided on the first through hole 15, the third through hole 19, the fourth through hole 20 and the second through hole 16 in sequence. The movable baffle 10 rotates in the rotation groove 14 through the positioning rod 12 to achieve the yielding and limiting effects with the locking handle 8.

[0020] As attached Figure 3 As shown, riveted parts 21 (an integrated structure) are provided at both ends of the positioning rod 12. The riveted parts 21 are semicircular in shape and connected to the positioning rod 12. The diameter of the riveted parts 21 is larger than the outer diameter of the positioning rod 12. The riveted parts 21 are riveted by a riveting process, so that the positioning rod 12 can be limited and rotated on one side of the first U-shaped opening 13 and is not easy to fall off.

[0021] As attached Figure 2 As shown in Appendix 3, a clearance opening 23 is provided between the first convex ring 17 and the second convex ring 18, and the limit torsion spring 11 is sleeved on the positioning rod 12 and arranged in the clearance opening 23. The clearance opening 23 is provided for positioning and rotating the limit torsion spring 11, and at the same time, the two sides of the limit torsion spring 11 are supported and positioned to prevent the limit torsion spring 11 from sliding during operation.

[0022] As attached Figure 3 As shown, a first extension leg 24 and a second extension leg 25 (an integrated structure) are provided on the limiting torsion spring 11, one end of the first extension leg 24 is connected to the limiting torsion spring 11, and the other end extends toward the side of the movable baffle 10 to form a compression, and one end of the second extension leg 25 is connected to the limiting torsion spring 11, and the other end extends toward the inner wall of one side of the first U-shaped opening 13 to form a compression, and the first extension leg 24 and the second extension leg 25 are used to transmit and release the pressure contraction and pressure release of the limiting torsion spring 11.

[0023] As attached Figure 2 and attached Figure 3 As shown, the first U-shaped opening 13 is extended toward one side of the movable baffle 10 to be provided with an abutment panel 26 (an integrated structure), and the movable baffle 10 is provided with an L-shaped abutment surface 27 (an integrated structure) that is compatible with the abutment panel 26. After the movable baffle 10 releases the contraction pressure by the limiting torsion spring 11, the L-shaped abutment surface 27 is clamped with the abutment panel 26 to prevent the locking handle 8 from falling off.

[0024] As attached Figure 2 and attached Figure 4 As shown, the locking handle 8 includes a tightening sleeve 28, a screw rod 29 and a rotating latch 30. A second U-shaped opening 31 is provided on the first base 4. The rotating latch 30 is plugged and installed on the second U-shaped opening 31 (the two ends are fixed by riveting), one end of the screw rod 29 is fixedly connected to the rotating latch 30 and extends toward the first U-shaped opening 13. The tightening sleeve 28 is provided with a screw hole 32 for forming a threaded connection with the screw rod 29. A clearance groove 33 is provided on the screw rod 29. The clearance groove 33 is located on one side of the movable baffle 10. The rotating latch drives the screw rod 29 to rotate toward the first U-shaped opening 13. The clearance groove 33 provided on the screw rod 29 is used to reduce the area entering the first U-shaped opening 13, thereby realizing quick installation.

[0025] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention and cannot be understood as limitations on the present invention.

Claims

1. A pneumatic powder metering valve, comprising a valve body (1), a clamp (2) being clamped and mounted on the valve body (1), characterized in that: The clamp (2) comprises a semicircular clamping seat (3), a first base (4) and a second base (5) which are connected to each other; a locking handle (8) which is locked with the second base (5) is arranged on the first base (4); a limiting assembly (9) for limiting one side of the locking handle (8) is installed on the second base (5); the limiting assembly (9) comprises a movable baffle (10), a limiting torsion spring (11) and a positioning rod (12); the movable baffle (10) and the limiting torsion spring (11) are sleeved on the positioning rod (12); and the positioning rod (12) is rotatably arranged on the second base (5) and is located on one side of the locking handle (8).

2. A pneumatic powder metering valve according to claim 1, characterized in that: The second base (5) is provided with a first U-shaped opening (13), a rotating groove (14) is provided on one side of the first U-shaped opening (13), a first through hole (15) and a second through hole (16) which are connected to the first base (4) are provided at both ends of the rotating groove (14), a first convex ring (17) and a symmetrical second convex ring (18) are provided on the movable baffle (10) facing the first U-shaped opening (13), a third through hole (19) and a fourth through hole (20) which correspond to the first through hole (15) and the second through hole (16) are provided on the first convex ring (17) and the second convex ring (18), respectively, and the positioning rod (12) passes through and is rotatably provided on the first through hole (15), the third through hole (19), the fourth through hole (20) and the second through hole (16) in sequence.

3. A pneumatic powder metering valve according to claim 2, characterized in that: Riveting portions (21) are provided at both ends of the positioning rod (12); the riveting portions (21) are semicircular in shape and connected to the positioning rod (12); and the diameter of the riveting portions (21) is greater than the outer diameter of the positioning rod (12).

4. A pneumatic powder metering valve according to claim 3, characterized in that: A clearance opening (23) is provided between the first convex ring (17) and the second convex ring (18), and the limit torsion spring (11) is sleeved on the positioning rod (12) and arranged in the clearance opening (23).

5. The pneumatic powder metering valve according to claim 2, characterized in that: A first extending leg (24) and a second extending leg (25) are provided on the limiting torsion spring (11); one end of the first extending leg (24) is connected to the limiting torsion spring (11), and the other end extends toward one side of the movable baffle (10) to form a compression; one end of the second extending leg (25) is connected to the limiting torsion spring (11), and the other end extends toward the inner wall of one side of the first U-shaped opening (13) to form a compression.

6. A pneumatic powder metering valve according to claim 5, characterized in that: An abutment panel (26) is extended from the first U-shaped opening (13) toward one side of the movable baffle (10), and an L-shaped abutment surface (27) matching the abutment panel (26) is provided on the movable baffle (10).

7. The pneumatic powder metering valve according to claim 1, characterized in that: The locking handle (8) comprises a tightening sleeve (28), a screw rod (29) and a rotating latch (30); a second U-shaped opening (31) is provided on the first base (4); the rotating latch (30) is plugged and installed on the second U-shaped opening (31); one end of the screw rod (29) is fixedly connected to the rotating latch (30) and extends toward one side of the first U-shaped opening (13); the tightening sleeve (28) is provided with a screw hole (32) for forming a threaded connection with the screw rod (29); a clearance groove (33) is provided on the screw rod (29); and the clearance groove (33) is located on one side of the movable baffle (10).

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