Pneumatic bar valve
By introducing a pneumatic design and a limiting rotation structure into the bar valve, the problem of material jamming in the bar valve is solved, enabling reliable bar reset and automatic material detachment, simplifying the cleaning process and reducing the risk of equipment damage.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-04-03
AI Technical Summary
Existing bar valves are prone to jamming between adjacent bars due to lumpy materials, which prevents the bars from fully resetting, and knocking to clean them may cause the bars to bend and deform.
The design employs a pneumatic bar valve, which features a U-shaped groove, a limiting ring, and a rotating rod on the outer wall of the bar. The rotating rod increases the distance between adjacent bars, and combined with carbon bar lubrication and a limiting structure, it ensures that materials fall off automatically and, if necessary, breaks up jammed materials with its sharp point.
It achieves smooth bar repositioning and automatic material detachment, avoiding bar damage, reducing the probability of blockage, and simplifying the cleaning process.
Smart Images
Figure CN224076611U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of bar valves, specifically to a pneumatic bar valve. Background Technology
[0002] A bar valve is a device used to control the flow of solid materials, mainly for conveying and feeding processes of lumpy, granular, and other solid materials. The working principle of a bar valve is as follows: when material needs to be discharged, the transmission device drives the bars to move to one side, forming a discharge port through which the material flows out; when closing is required, the transmission device drives the bars to return to their original position, with the bars tightly aligned to prevent material flow.
[0003] In existing related technologies, the bars of the bar valve are cylindrical bars with the same distance between adjacent bars. When the bars are moving or the bar valve is closed, lumpy materials may get stuck between adjacent bars, which will prevent the bars from fully returning to their original position. If they are cleaned by tapping, the bars are likely to bend and deform. Utility Model Content
[0004] To overcome the problem of material jamming in existing bar valves, this application provides a pneumatic bar valve.
[0005] This application adopts the following technical solution: a pneumatic bar valve, including a valve body assembly, bars, and a cylinder. The valve body assembly includes a rectangular plate frame, a horizontal plate and a movable inner bar are provided inside the plate frame, and a plurality of bars are arranged at intervals between the horizontal plate and the movable inner bar. The cylinder is used to push the movable inner bar and the plurality of bars to move. A U-shaped through groove is provided on the outer wall of the bar, and the through groove extends along the axial direction of the bar. The outer wall of the bar is also provided with a limiting ring and a rotating rod. The limiting ring abuts against the side of the movable inner bar near the horizontal plate, and the rotating rod abuts against the side of the movable inner bar near the cylinder.
[0006] Optionally, the cylinder is located on the top outer side of the plate frame, and the push rod of the cylinder extends to the inner side of the plate frame and is connected to the movable inner strip;
[0007] The horizontal plate is located in the middle of the inner side of the plate frame, and the movable inner strip is located in the upper inner side of the plate frame.
[0008] Optionally, one end of the rotating rod is connected to the bar, and the other end of the rotating rod is provided with an internal hexagonal hole.
[0009] Optionally, the horizontal plate is provided with a plurality of through holes for the rods to pass through, a sleeve is fitted inside the through holes, and a plurality of carbon rods are threaded through the inner wall of the sleeve, the carbon rods being in contact with the rods.
[0010] Optionally, the perforation is a stepped hole, and a limiting tube is provided at the end of the sleeve away from the movable inner strip. The outer diameter of the limiting tube is larger than the outer diameter of the sleeve. A retaining ring is provided at the end of the sleeve near the movable inner strip, and the retaining ring is in contact with the side wall of the cross plate.
[0011] Optionally, the limiting tube and the sleeve, and the retaining ring and the sleeve are all connected by threads.
[0012] Compared with the prior art, the present application can realize the rotation of the bar by driving the rotating rod to rotate the through groove on the bar to the state of contact with the material, thereby increasing the distance between two adjacent bars, facilitating the automatic falling of the material and ensuring that the bar can be smoothly reset. Attached Figure Description
[0013] Figure 1 This is a schematic perspective view of this application;
[0014] Figure 2 yes Figure 1 Reference diagram of the action state;
[0015] Figure 3 This is a reference diagram showing the assembly state of the bar and the movable inner bar;
[0016] Figure 4 It is a schematic three-dimensional diagram of a bar;
[0017] Figure 5 Reference diagram of the explosion state of the horizontal plate, bar, and sleeve;
[0018] Figure 6 Reference diagram showing the assembly status of the sleeve, limiting tube, and retaining ring;
[0019] Figure 7 This is a cross-sectional view of the internal structure of the horizontal plate;
[0020] In the diagram: 1. Valve body assembly; 11. Plate frame; 12. Horizontal plate; 120. Perforation; 13. Movable inner strip; 2. Bar; 21. Through groove; 22. Limiting ring; 23. Rotating rod; 230. Internal hexagonal hole; 24. Sharp part; 3. Cylinder; 4. Sleeve; 41. Carbon rod; 42. Limiting tube; 43. Snap ring. Detailed Implementation
[0021] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.
[0022] like Figure 1-6As shown, a pneumatic bar valve includes a valve body assembly 1, bars 2, and a cylinder 3. The valve body assembly 1 includes a rectangular plate frame 11, a horizontal plate 12 and a movable inner bar 13 inside the plate frame 11. Several bars 2 are arranged at intervals between the horizontal plate 12 and the movable inner bar 13. The cylinder 3 is located on the top outer side of the plate frame 11. The push rod of the cylinder 3 extends to the inner side of the plate frame 11 and is connected to the movable inner bar 13. The horizontal plate 12 is located in the middle of the inner side of the plate frame 11, and the movable inner bar 13 is located in the upper inner side of the plate frame 11. The cylinder 3 is used to push the movable inner bar 13 and several bars 2 to move. The outer wall of the bar 2 is provided with a U-shaped through groove 21, which extends along the axial direction of the bar 2. The outer wall of the bar 2 is also provided with a limiting ring 22 and a rotating rod 23. The limiting ring 22 abuts against the side of the movable inner bar 13 near the horizontal plate 12, and the rotating rod 23 abuts against the side of the movable inner bar 13 near the cylinder 3.
[0023] Driven by cylinder 3, the movable inner bar 13 slides within the plate frame 11, thereby pushing all the bars 2 to move and opening / closing the bar 2 valve. Under the limiting action of the limiting ring 22 and the rotating rod 23, no relative displacement occurs between the movable inner bar 13 and the bars 2, ensuring reliable movement of the bars 2. When material is stuck between two adjacent bars 2, the rotating rod 23 can be manually driven to rotate. When the through groove 21 of the bar 2 contacts the material, the distance between the bar 2 and the material changes, as does the distance between the two bars 2. This allows the material to fall automatically, simplifying the operation and preventing damage to the bars 2. Furthermore, when forward rotation of the bars 2 fails to cause material to fall, the bars 2 can be frequently rotated back and forth. At this time, the sharp points 24 formed on the bars 2 due to the through groove 21 repeatedly impact the material, breaking it and ensuring rapid removal of stuck material.
[0024] One end of the rotating rod 23 is connected to the bar 2, and the other end of the rotating rod 23 is provided with an internal hexagonal hole 230. When it is necessary to rotate the rotating rod 23, an external hexagonal wrench can be inserted into the internal hexagonal hole 230. In this way, under the action of the external hexagonal wrench, the bar 2 can be rotated more effortlessly, and the sharp part 24 can have higher kinetic energy to crush the material.
[0025] The horizontal plate 12 has several through holes 120 for the rods 2 to pass through. A sleeve 4 is fitted inside the through holes 120, and several carbon rods 41 are threaded through the inner wall of the sleeve 4, contacting the rods 2. During the reciprocating movement of the rods 2 driven by the cylinder 3, the carbon rods 41 and the rods 2 will repeatedly rub against each other, thereby achieving a lubricating effect on the rods 2, allowing the material to pass through the gap between the two rods 2 more easily, thus reducing the probability of material blockage.
[0026] The perforation 120 is a stepped hole. The end of the sleeve 4 away from the movable inner strip 13 is provided with a limiting tube 42. The outer diameter of the limiting tube 42 is larger than the outer diameter of the sleeve 4. The sleeve 4 and the movable inner strip 13 are connected by threads. After the sleeve 4 and the movable inner strip 13 are connected, the sleeve 4 can be inserted into the perforation 120 from below the horizontal plate 12 (the direction is downward when the push rod of the cylinder 3 extends and upward when the push rod of the cylinder 3 retracts). At this time, since the perforation 120 is a stepped hole and the lower inner diameter of the perforation 120 is larger than the upper inner diameter of the perforation 120, the connection between the sleeve 4 and the movable inner strip 13 can be locked at the step of the perforation 120. In this way, the lower end of the sleeve 4 is fixed. When the sleeve 4 is completely inside the perforation 120, the upper end of the sleeve 4 will extend above the horizontal plate 12. A movable retaining ring 43 is fitted on the outer wall of the bar 2. At this time, the retaining ring 43 can be screwed into the sleeve 4 to fix the upper end of the sleeve 4. That is to say, under the combined action of the limiting tube 42 and the retaining ring 43, the sleeve 4 is reliably fixed inside the perforation 120, thereby reliably lubricating the bar 2. Moreover, when the bar 2 is worn too much, the sleeve 4 can be replaced by quickly disassembling the limiting tube 42 and the retaining ring 43.
[0027] Furthermore, the inner diameter of the limiting tube 42 is larger than the outer diameter of the bar 2, so that the inner wall of the limiting tube 42 and the outer wall of the bar 2 can be separated from each other. In this way, when the material moves synchronously to the horizontal plate 12 with the bar 2, the presence of the limiting tube 42 increases the space between the bar 2 and the horizontal plate 12, which promotes the falling of the material to the greatest extent.
[0028] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.
Claims
1. A pneumatic bar valve, comprising a valve body assembly (1), bars (2), and a cylinder (3), wherein the valve body assembly (1) includes a rectangular plate frame (11), a horizontal plate (12) and a movable inner bar (13) are provided within the plate frame (11), a plurality of bars (2) are spaced apart between the horizontal plate (12) and the movable inner bar (13), and the cylinder (3) is used to push the movable inner bar (13) and the plurality of bars (2) to move, characterized in that, The outer wall of the bar (2) is provided with a U-shaped through groove (21), which extends along the axial direction of the bar (2). The outer wall of the bar (2) is also provided with a limiting ring (22) and a rotating rod (23). The limiting ring (22) abuts against the side of the movable inner bar (13) near the cross plate (12), and the rotating rod (23) abuts against the side of the movable inner bar (13) near the cylinder (3).
2. A pneumatic bar valve according to claim 1, characterized in that, The cylinder (3) is located on the top of the outer side of the plate frame (11), and the push rod of the cylinder (3) extends to the inner side of the plate frame (11) and is connected to the movable inner strip (13); The horizontal plate (12) is located in the middle of the inner side of the plate frame (11), and the movable inner strip (13) is located in the upper inner side of the plate frame (11).
3. A pneumatic bar valve according to claim 2, characterized in that, One end of the rotating rod (23) is connected to the bar (2), and the other end of the rotating rod (23) is provided with an internal hexagonal hole (230).
4. A pneumatic bar valve according to claim 1, characterized in that, The horizontal plate (12) is provided with a plurality of through holes (120) for the rods (2) to pass through. A sleeve (4) is fitted inside the through holes (120). A plurality of carbon rods (41) are threaded through the inner wall of the sleeve (4). The carbon rods (41) are in contact with the rods (2).
5. A pneumatic bar valve according to claim 4, characterized in that, The perforation (120) is a stepped hole. The end of the sleeve (4) away from the movable inner strip (13) is provided with a limiting tube (42). The outer diameter of the limiting tube (42) is larger than the outer diameter of the sleeve (4). The end of the sleeve (4) near the movable inner strip (13) is provided with a retaining ring (43). The retaining ring (43) is in contact with the side wall of the cross plate (12).
6. A pneumatic bar valve according to claim 5, characterized in that, The limiting tube (42) and the sleeve (4), and the retaining ring (43) and the sleeve (4) are all connected by threads.