Pneumatic feed valve for pneumatic powder conveying

Abstract

The utility model belongs to the technical field of pneumatic feed valves, and particularly discloses a pneumatic feed valve for pneumatic powder conveying, which comprises a shell and a through groove, the through groove is transversely arranged in the shell, a rotating shaft is movably connected between the upper part and the lower part of the left side in the through groove, a first rotating block is fixed outside the rotating shaft, and a second rotating block is fixed outside the first rotating block. A valve block is fixed to the right side of the first rotating block, and a ball is movably embedded in the right side of the valve block. According to the pneumatic feeding valve for pneumatic powder conveying, a valve plate is fixed to the right side of a first rotating block, after an air cylinder is started, a horizontally-moving piston rod can jack up the rotating block assembled by a connecting block, when a second rotating block rotates, a rotating shaft and the first rotating block synchronously rotate, and at the moment, the valve plate horizontally rotates along the inner wall of a through groove through a ball; and then the cover body hinged to the upper right corner of the shell is closed until the pull buckle on the left side is clamped and connected to the limiting block to be fixed, and the problem of protecting the pneumatic mechanism is solved.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic feed valve technology, specifically a pneumatic feed valve for pneumatic conveying of powder. Background Technology

[0002] A pneumatic feed valve is a device that uses a valve plate to close or open the valve body channel. The main mechanism that guides the movement of the valve plate is a cylinder. Under the rotation of the rotating rod connected to the piston rod of the cylinder, the valve plate is controlled to swing horizontally, and in conjunction with a pressure pump and other equipment, granular powder is transported in the pipeline.

[0003] The pneumatic feed valve is an important sealing component of the pipeline. The cylinder above, which plays a telescopic role, is exposed to the external environment for a long time. If the telescopic rod of the lubricating cylinder is contaminated with debris, the telescopic rod will get stuck in the cylinder body during the movement, affecting the stability of the feed valve during operation.

[0004] Now, a novel pneumatic feed valve for powder pneumatic conveying is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a pneumatic feed valve for pneumatic conveying of powder, so as to solve the problem of protecting the pneumatic mechanism mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a pneumatic feed valve for pneumatic conveying of powder, comprising a housing and a through groove. The through groove is horizontally arranged inside the housing, and a rotating shaft is movably connected between the upper and lower sides of the left side inside the through groove. A rotating block one is fixed to the outside of the rotating shaft, and a valve plate is fixed to the right side of the rotating block one. A ball is movably embedded inside the right side of the valve plate. A rotating block two is fixed to the top of the rotating shaft, and a connecting block is movably installed behind the rotating block two. A cylinder is installed behind the center of the top of the housing. A cover is movably hinged to the right side of the top of the housing, and a pull buckle is fixed to the left side of the cover. A limit block is fixed above the left side of the top of the housing.

[0007] As a further technical solution of this utility model, the cover covers the outside of the cylinder, piston rod connecting block and rotating block two, and the buckle is snapped onto the outside of the limiting block.

[0008] As a further technical solution of this utility model, the ball is attached to the side wall of the through groove, and the rotating shaft and the rotating block can guide the valve plate to rotate horizontally.

[0009] As a further technical solution of this utility model, a feed pipe is fixed at the center of the top of the shell, and an air bladder is fixed on the inner wall of the feed pipe. An annular chamber is provided inside the air bladder, and an air groove is provided between the left side of the annular chamber and the feed pipe. A threaded plug is installed in the air groove, and a flange is fixed around the top of the feed pipe.

[0010] As a further technical solution of this utility model, the annular chamber and the airbag are arranged in concentric circles, and the outer wall of the threaded plug matches the inner wall of the air groove.

[0011] As a further technical solution of this utility model, a circular groove is fixed at the bottom of the shell, and a discharge pipe is fixedly inserted into the groove. A slot is provided on the upper side of both sides of the inner wall of the discharge pipe, and a locking block is inserted into the slot. A screen box is fixed horizontally between the locking blocks. An assembly piece is fixed on the upper side of both sides of the discharge pipe, and a bolt is threaded into the assembly piece. Screw holes are provided on both sides of the bottom of the shell.

[0012] As a further technical solution of this utility model, the top of the bolt is embedded in the screw hole, and the bolt can rotate up and down in the assembly piece.

[0013] As a further technical solution of this utility model, the card blocks are symmetrically fixed on both sides of the screen box, and the screen box can move vertically along the inner wall of the discharge pipe.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the pneumatic feed valve for powder pneumatic conveying not only protects the pneumatic components and prevents leakage at pipe connections, but also filters large particles of debris.

[0015] (1) By fixing a valve plate on the right side of the first rotating block, after the cylinder is opened, the piston rod that moves horizontally will push up the rotating block assembled on the connecting block. When the second rotating block rotates, the rotating shaft and the first rotating block will rotate synchronously. At this time, the valve plate will rotate horizontally along the inner wall of the through groove through the ball, thereby opening and closing the through groove. Then close the cover hinged at the upper right corner of the housing until the pull buckle on the left side is fixed at the limit block. This can prevent the piston rod from being contaminated by other debris and blocking the channel inside the cylinder, ensuring that the valve plate moves smoothly enough.

[0016] (2) By fixing the feed pipe at the center of the top of the shell, the feed pipe can be inserted into the external pipe. Then, unscrew the threaded plug in the air groove from the left side, insert the air pump nozzle into the air groove and into the annular chamber of the air bag. The inflated air bag will wrap around the outside of the pipe, reduce the gap between the two, avoid leakage of the pneumatic conveying device, and also adjust the thickness of the air bag according to the thickness of the inserted pipe.

[0017] (3) By fixing the discharge pipe in the round groove, insert the top of the discharge pipe into the round groove at the bottom of the shell, and then rotate the bolts installed in the assembly pieces on both sides until the top of the bolts is screwed into the screw hole for fixing. At this time, the card blocks embedded in the card slots on both sides will firmly fix the screen box in the center, intercepting large particles when the powder leaves the discharge pipe, ensuring that the powder particles are consistent. After the discharge pipe is removed, clean the screen box inside. Attached Figure Description

[0018] Figure 1 This is a frontal cross-sectional view of the present invention.

[0019] Figure 2 This is a front view cross-sectional structural diagram of the shell of this utility model;

[0020] Figure 3 This is a front view cross-sectional structural diagram of the feed pipe of this utility model;

[0021] Figure 4 This is a front view cross-sectional structural diagram of the discharge pipe of this utility model.

[0022] In the diagram: 1. Shell; 2. Rotating block one; 3. Rotating shaft; 4. Limiting block; 5. Rotating block two; 6. Connecting block; 7. Flange; 8. Feed pipe; 9. Airbag; 10. Cover; 11. Cylinder; 12. Through groove; 13. Ball bearing; 14. Valve plate; 15. Circular groove; 16. Bolt; 17. Discharge pipe; 18. Screen box; 19. Slot; 20. Slot block; 21. Pull buckle; 22. Piston rod; 23. Air groove; 24. Threaded plug; 25. Assembly piece; 26. Screw hole; 27. Annular chamber. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figure 1-4 An embodiment of this utility model provides a pneumatic feed valve for pneumatic conveying of powder, including a housing 1 and a through groove 12. The through groove 12 is arranged horizontally inside the housing 1, and a rotating shaft 3 is movably connected between the upper and lower sides of the left side inside the through groove 12. A rotating block 2 is fixed to the outside of the rotating shaft 3, and a valve plate 14 is fixed to the right side of the rotating block 2. A ball bearing 13 is movably embedded inside the right side of the valve plate 14. A rotating block 5 is fixed to the top of the rotating shaft 3, and a connecting block 6 is movably installed behind the rotating block 5. A cylinder 11 is installed behind the center of the top of the housing 1. A cover 10 is movably hinged to the right side of the top of the housing 1, and a pull buckle 21 is fixed to the left side of the cover 10. A limit block 4 is fixed to the upper left side of the top of the housing 1.

[0025] The cover 10 covers the outside of the cylinder 11, piston rod 22 connecting block 6 and rotating block 2 5, the buckle 21 is snapped onto the outside of the limiting block 4, the ball 13 is attached to the side wall of the through groove 12, and the rotating shaft 3 and rotating block 2 can guide the valve plate 14 to rotate horizontally.

[0026] Specifically, such as Figure 1 and Figure 2 As shown, after the cylinder 11 is opened, the translating piston rod 22 will push up the rotating block 5 assembled on the connecting block 6. When the rotating block 5 rotates, the rotating shaft 3 and the rotating block 2 will rotate synchronously. At this time, the valve plate 14 will rotate horizontally along the inner wall of the through groove 12 through the ball 13 to realize the opening and closing of the through groove 12. Then the cover 10 hinged to the upper right corner of the housing 1 will be closed until the pull buckle 21 on the left side is locked at the limit block 4. This can prevent the piston rod 22 from being contaminated by other debris and blocking the internal passage of the cylinder 11 when it moves.

[0027] A feed pipe 8 is fixed at the center of the top of the housing 1, and an air bladder 9 is fixed on the inner wall of the feed pipe 8. An annular chamber 27 is provided inside the air bladder 9, and an air groove 23 is provided between the left side of the annular chamber 27 and the feed pipe 8. A threaded plug 24 is installed in the air groove 23. A flange 7 is fixed around the top of the feed pipe 8. The annular chamber 27 and the air bladder 9 are arranged in concentric circles. The outer wall of the threaded plug 24 matches the inner wall of the air groove 23.

[0028] Specifically, such as Figure 1 and Figure 3 As shown, the feed pipe 8 allows for the insertion of an external pipe. Then, the threaded plug 24 in the air groove 23 is unscrewed from the left side, and the air nozzle of the air pump is inserted into the air groove 23 and into the annular chamber 27 of the air bag 9. The inflated air bag 9 will wrap around the outside of the pipe, reducing the gap between the two and preventing leakage from the pneumatic conveying device.

[0029] A circular groove 15 is fixed at the bottom of the housing 1, and a discharge pipe 17 is fixedly inserted into the groove 15. A slot 19 is provided on the upper side of both sides of the inner wall of the discharge pipe 17, and a locking block 20 is inserted into the slot 19. A screen box 18 is fixed horizontally between the locking blocks 20. An assembly piece 25 is fixed on the upper side of both sides of the discharge pipe 17, and a bolt 16 is threaded into the assembly piece 25. A screw hole 26 is provided on both sides of the bottom of the housing 1.

[0030] The top of the bolt 16 is embedded in the screw hole 26. The bolt 16 can rotate up and down in the assembly piece 25. The locking blocks 20 are symmetrically fixed on both sides of the screen box 18. The screen box 18 can move vertically along the inner wall of the discharge pipe 17.

[0031] Specifically, such as Figure 1 and Figure 4 As shown, insert the top of the discharge pipe 17 into the circular groove 15 at the bottom of the housing 1, and then rotate the bolts 16 installed in the assembly pieces 25 on both sides until the top of the bolts 16 is screwed into the screw hole 26 for fixing. At this time, the card blocks 20 embedded in the card slots 19 on both sides will firmly fix the screen box 18 in the center, and intercept large particles when the powder leaves the discharge pipe 17 to ensure that the powder particles are consistent.

[0032] Working principle: In use, the feed pipe 8 allows for the insertion of an external pipe. Then, the threaded plug 24 in the air groove 23 is unscrewed from the left side. The air pump nozzle is inserted into the air groove 23 and into the annular chamber 27 of the air bladder 9. The inflated air bladder 9 wraps around the outside of the pipe, reducing the gap between them. Next, the top of the discharge pipe 17 is inserted into the circular groove 15 at the bottom of the housing 1. Then, the bolts 16 installed in the mounting pieces 25 on both sides are rotated until the top of the bolts 16 is screwed into the screw holes 26 for fixation. At this time, the locking blocks 20 embedded in the slots 19 on both sides will firmly fix the screen box 18 in the center. When the material leaves the discharge pipe 17, large particles are intercepted. After the cylinder 11 is opened, the translating piston rod 22 will push up the rotating block 5 assembled on the connecting block 6. When the rotating block 5 rotates, the rotating shaft 3 and the rotating block 2 will rotate synchronously. At this time, the valve plate 14 will rotate horizontally along the inner wall of the through groove 12 through the ball 13 to realize the opening and closing of the through groove 12. Then the cover 10 hinged to the upper right corner of the housing 1 will be closed until the pull buckle 21 on the left side is locked at the limit block 4. This can prevent the piston rod 22 from being contaminated by other debris and blocking the internal channel of the cylinder 11, and ensure that the movement of the valve plate 14 is smooth enough.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A pneumatic feed valve for pneumatic conveying of powder, comprising a housing (1) and a through groove (12), characterized in that: The interior of the housing (1) is provided with a transverse groove (12), and a rotating shaft (3) is movably connected between the upper and lower sides of the left side of the groove (12). A rotating block (2) is fixed to the outside of the rotating shaft (3), and a valve plate (14) is fixed to the right side of the rotating block (2). A ball bearing (13) is movably embedded in the right side of the valve plate (14). A rotating block (5) is fixed to the top of the rotating shaft (3), and a connecting block (6) is movably installed behind the rotating block (5). A cylinder (11) is installed behind the center of the top of the housing (1). A cover (10) is movably hinged to the right side of the top of the housing (1), and a pull buckle (21) is fixed to the left side of the cover (10). A limit block (4) is fixed to the upper left side of the top of the housing (1).

2. The pneumatic feed valve for powder pneumatic conveying according to claim 1, characterized in that: The cover (10) covers the outside of the cylinder (11), piston rod (22) connecting block (6) and rotating block two (5), and the buckle (21) is engaged with the outside of the limiting block (4).

3. The pneumatic feed valve for powder pneumatic conveying according to claim 1, characterized in that: The ball (13) is attached to the side wall of the through groove (12), and the rotating shaft (3) and the rotating block (2) can guide the valve plate (14) to rotate horizontally.

4. The pneumatic feed valve for powder pneumatic conveying according to claim 1, characterized in that: A feed pipe (8) is fixed at the center of the top of the housing (1), and an air bladder (9) is fixed on the inner wall of the feed pipe (8). An annular chamber (27) is provided inside the air bladder (9), and an air groove (23) is provided between the left side of the annular chamber (27) and the feed pipe (8). A threaded plug (24) is installed in the air groove (23), and a flange (7) is fixed around the top of the feed pipe (8).

5. The pneumatic feed valve for powder pneumatic conveying according to claim 4, characterized in that: The annular chamber (27) and the airbag (9) are arranged in concentric circles, and the outer wall of the threaded plug (24) matches the inner wall of the air groove (23).

6. The pneumatic feed valve for powder pneumatic conveying according to claim 1, characterized in that: The bottom of the housing (1) is fixed with a circular groove (15), and a discharge pipe (17) is fixedly inserted into the circular groove (15). The upper sides of the inner wall of the discharge pipe (17) are respectively provided with slots (19), and slot blocks (20) are inserted into the slots (19). A screen box (18) is fixed horizontally between the slot blocks (20). Assembly pieces (25) are respectively fixed on the upper sides of the discharge pipe (17), and bolts (16) are threaded into the assembly pieces (25). Screw holes (26) are respectively provided on both sides of the bottom of the housing (1).

7. The pneumatic feed valve for powder pneumatic conveying according to claim 6, characterized in that: The top of the bolt (16) is embedded in the screw hole (26), and the bolt (16) can rotate up and down in the assembly piece (25).

8. The pneumatic feed valve for powder pneumatic conveying according to claim 6, characterized in that: The card blocks (20) are symmetrically fixed on both sides of the screen box (18), and the screen box (18) can move vertically along the inner wall of the discharge pipe (17).

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