Pneumatic rotary feeding valve with limiting function

Abstract

The utility model relates to the technical field of feeding valves, in particular to a pneumatic rotary feeding valve with a limiting function, which comprises a pneumatic rotary feeding valve body and a valve disc body, a limiting control mechanism is arranged above the pneumatic rotary feeding valve body, a buffer protection mechanism is arranged on the side edge of the limiting control mechanism, and the limiting control mechanism is arranged on the valve disc body. When the pneumatic rotary feeding valve with the limiting function is used, through the design that a protection plate is installed on the feeding side of the valve disc in an embedded mode, when materials enter the device, the materials make contact with the protection plate firstly, then the valve disc and the materials are isolated through the protection plate, and the valve disc and the materials are not prone to being abraded; and the protective plate is arranged to be detachable through the mechanism assembly, when the protective plate is abraded, the protective plate can be directly detached and replaced with a new plate face, the valve disc does not need to be replaced by detaching the starting rotary feeding valve, the overall structural design is simple, and the practical effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of feed valves, in particular to a pneumatic rotary feed valve with self-limiting function. Background Art

[0002] Pneumatic rotary feed valve is a device used to control the flow of materials. It is usually used for the conveying and control of powder, granular and granular materials. It mainly consists of a valve body, a rotary device and a pneumatic actuator. The pneumatic device drives the valve to open and close to realize the feeding or stopping of materials.

[0003] Patent number "CN206190941U" discloses a "pneumatic rotary feed valve". This device changes the angle between the inner side wall of the valve body and the horizontal base to greater than 40°, which makes it difficult for materials to accumulate and harden in the inner cavity, thereby protecting the valve plate from impact. Since the existing pneumatic rotary feed valve will cause different degrees of wear on the valve disc due to conveying materials as the use time changes, once the valve disc is excessively worn, the entire valve disc needs to be replaced. The maintenance cycle is long and the maintenance process is complicated. However, the above device has not made any improvements to this problem, and the overall practical effect is poor. Summary of the Invention

[0004] The purpose of the present utility model is to solve the above-mentioned problem and propose a pneumatic rotary feed valve with its own limit, which improves the problem that the existing pneumatic rotary feed valve will cause different degrees of wear of the valve disc due to conveying materials as the use time changes. Once the valve disc is excessively worn, the entire valve disc needs to be replaced, and the maintenance cycle is long and the maintenance process is complicated.

[0005] A pneumatic rotary feed valve with self-limiting function, comprising a pneumatic rotary feed valve body and a valve disc body: the valve disc body is installed inside the pneumatic rotary feed valve body, a limit control mechanism is provided above the pneumatic rotary feed valve body, a buffer protection mechanism is provided on the side of the limit control mechanism, and a portable maintenance mechanism is provided above the valve disc body;

[0006] The limit control mechanism includes a support seat and an elastic clamping ring. The top outer wall of the pneumatic rotary feed valve body located at the shell position is provided with a support seat, and the side outer walls of the support seat are symmetrically provided with elastic clamping rings.

[0007] Preferably, the buffer protection mechanism includes a docking tube and a buffer plate, the pneumatic rotary feed valve body is provided with a docking tube directly above the feed pipe position, and the side inner wall of the docking tube is provided with buffer plates at symmetrically staggered height positions.

[0008] Preferably, a flange is provided on the outer wall of the bottom end of the butt joint pipe, and a flange is provided on the outer wall of the top end of the feed pipe, and the two sets of flanges are fastened and installed by bolts and nuts.

[0009] Preferably, the buffer plate is configured as an arc-shaped structure.

[0010] Preferably, the portable maintenance mechanism includes a placement groove, a protective plate and a wear-resistant pad. The top outer wall of the valve disc body located in the direction of the feed end is provided with a placement groove, a protective plate is provided inside the placement groove, and a wear-resistant pad is embedded in the top outer wall of the protective plate located at the center position of the circle.

[0011] Preferably, the side outer wall of the protective plate is provided with positioning blocks at equal intervals, and the top outer wall of the valve disc body located at the placement groove position is correspondingly provided with positioning slots, and the positioning blocks and the positioning slots are snap-fitted.

[0012] Preferably, a first thread groove is provided on the top outer wall of the positioning block, and a second thread groove is correspondingly provided on the top outer wall of the valve disc body located at the positioning groove position, and the first thread groove and the second thread groove are threadedly installed with the fastening bolt.

[0013] The beneficial effects of the utility model are:

[0014] 1. When the pneumatic rotary feed valve with self-limiting function is in use, a protective plate is embedded in the feed side of the valve disc. When the material enters the device, it will first contact the protective plate, and then the valve disc and the material are isolated by the protective plate to prevent them from being worn. In addition, the protective plate is set to a detachable design through the mechanism component. When the protective plate is worn, it can be directly removed and replaced with a new plate. There is no need to disassemble the start-up rotary feed valve to replace the valve disc. The overall structural design is simple and has good practical effect.

[0015] 2. When the pneumatic rotary feed valve with self-limiting function is in use, a buffer plate with an arc structure is set at the feed end of the feed valve to implement a buffering barrier design. The arc baffle can effectively disperse the impact force of the material and reduce the impact on the valve body during material feeding. At the same time, the arc design can guide the material to flow more smoothly into the valve body, reducing the possibility of material accumulation and blockage, ensuring the stability of the feeding process. The overall structural design is simple and has good practical effect.

[0016] 3. When the pneumatic rotary feed valve with its own limit is in use, a clamping ring is set at a specified position of the cross bar to clamp it after the feed valve is closed. The design of the clamping ring can well support and limit the cross bar, and by observing the positional relationship between the cross bar and the clamping ring, once the cross bar does not enter the inside of the clamping ring, it can also be indirectly understood that there is a problem with the pneumatic component of the device, which causes the feed valve to fail to close normally. The overall structural design is ingenious and has good practical effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the three-dimensional structure of the valve disc body installation of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the limit control mechanism of the utility model;

[0020] Figure 4 This is a schematic diagram of the three-dimensional structure of the buffer protection mechanism of the present utility model;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the portable maintenance mechanism of the present utility model;

[0022] Figure 6 For the utility model Figure 5 A in the middle is an enlarged schematic diagram of the three-dimensional structure.

[0023] In the figure: 1. Pneumatic rotary feed valve body; 2. Valve disc body; 3. Limit control mechanism; 31. Support seat; 32. Elastic clamping ring; 4. Buffer protection mechanism; 41. Docking tube; 42. Buffer plate; 43. Flange; 5. Portable maintenance mechanism; 51. Placement groove; 52. Protective plate; 53. Wear-resistant pad; 54. Positioning block; 55. Positioning slot; 56. First thread groove; 57. Second thread groove; 58. Fastening bolt. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] When implementing: Figure 1-6 As shown, a pneumatic rotary feed valve with self-limiting function includes a pneumatic rotary feed valve body 1 and a valve disc body 2: the valve disc body 2 is installed inside the pneumatic rotary feed valve body 1, a limit control mechanism 3 is provided above the pneumatic rotary feed valve body 1, a buffer protection mechanism 4 is provided on the side of the limit control mechanism 3, and a portable maintenance mechanism 5 is provided above the valve disc body 2;

[0026] The limit control mechanism 3 includes a support seat 31 and an elastic clamping ring 32. The support seat 31 is provided on the top outer wall of the pneumatic rotary feed valve body 1 at the outer shell position, and the elastic clamping ring 32 is symmetrically provided on the side outer wall of the support seat 31; the position of the elastic clamping ring 32 here is set to the cross bar indication position after the valve disc body 2 is completely closed, and then when the pneumatic rotary feed valve body 1 is closed, the cross bar just fits into the inside of the elastic clamping ring 32. The setting of the support seat 31 here has the effect of positioning and installing the elastic clamping ring 32.

[0027] The buffer protection mechanism 4 includes a docking tube 41 and a buffer plate 42. The pneumatic rotary feed valve body 1 is provided with a docking tube 41 directly above the feed pipe position, and the side inner wall of the docking tube 41 is symmetrically staggered with buffer plates 42 at height positions. The bottom outer wall of the docking tube 41 is provided with a flange 43, and the top outer wall of the feed pipe is provided with a flange 43. The two sets of flanges 43 are fastened and installed with bolts and nuts; the setting of the flange 43 here is used to install the docking tube 41 and the feed pipe together, and the setting of the buffer plate 42 has a blocking and buffering effect on the raw materials entering the inside of the pneumatic rotary feed valve body 1, so that part of the material can be supported and set above the buffer plate 42 through the blocking effect of the buffer plate 42, thereby reducing the load-bearing negative pressure of the valve disc body 2.

[0028] The buffer plate 42 is configured as an arc-shaped structure; this design reduces the resistance encountered by the material when it slides down from above the buffer plate 42 .

[0029] The portable maintenance mechanism 5 includes a placement groove 51, a protective plate 52 and a wear-resistant pad 53. The top outer wall of the valve disc body 2 in the direction of the feed end is provided with a placement groove 51, and a protective plate 52 is provided inside the placement groove 51. The top outer wall of the protective plate 52 at the center position is embedded with a wear-resistant pad 53. The side outer wall of the protective plate 52 is evenly spaced and surrounded by positioning blocks 54. The top outer wall of the valve disc body 2 at the position of the placement groove 51 is correspondingly surrounded by a positioning groove 55. The positioning block 54 and the positioning groove 55 are engaged with each other. The top outer wall of the positioning block 54 is provided with a first thread groove 56. The top outer wall of the valve disc body 2 at the position of the positioning groove 55 is correspondingly provided with a second thread groove 57. The first thread groove 56 and the second thread groove 57 There is a threaded installation between the fastening bolt 58; when the valve disc body 2 is used for too long and wears out, the protective plate 52 can be directly removed and replaced with a new one. When replacing, you first need to unscrew the fastening bolt 58 from the inside of the first thread groove 56, and then the positioning block 54 changes from a locked state to an active state, and then the protective plate 52 and the positioning block 54 can be directly taken out from the inside of the device. When installing a new protective plate 52, you only need to adjust the protective plate 52 to a suitable position and push the positioning block 54 on its side to the bottom of the positioning groove 55 at the corresponding position, and then use the fastening bolt 58 to pass through the first thread groove 56 and screw it to the bottom of the second thread groove 57 to complete the installation. The setting of the wear-resistant pad 53 here makes the valve disc body 2 more wear-resistant.

[0030] When the utility model is in use, the position of the elastic clamping ring 32 is set to the cross bar indicating position after the valve disc body 2 is completely closed. Then, when the pneumatic rotary feed valve body 1 is closed, the cross bar is just stuck in the interior of the elastic clamping ring 32. The setting of the support seat 31 here plays a positioning and installation effect on the elastic clamping ring 32.

[0031] The flange 43 is provided to mount the butt joint 41 and the feed pipe together, while the buffer plate 42 is provided to block and buffer the raw materials entering the pneumatic rotary feed valve body 1. The blocking effect of the buffer plate 42 allows part of the material to be supported above the buffer plate 42, thereby reducing the load-bearing negative pressure of the valve disc body 2.

[0032] When the valve disc body 2 is worn out after being used for too long, the protective plate 52 can be directly removed and replaced with a new one. When replacing, the fastening bolt 58 needs to be unscrewed from the inside of the first thread groove 56, and then the positioning block 54 changes from a locked state to an active state. Then, the protective plate 52 and the positioning block 54 can be directly taken out from the inside of the device. When installing a new protective plate 52, it is only necessary to adjust the protective plate 52 to a suitable position and push the positioning block 54 on its side to the bottom of the positioning groove 55 at the corresponding position. Then, the fastening bolt 58 is used to pass through the first thread groove 56 and screw it to the bottom of the second thread groove 57 to complete the installation. The setting of the wear-resistant pad 53 here makes the valve disc body 2 more wear-resistant.

[0033] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A pneumatic rotary feed valve with self-limiting function, characterized in that: The pneumatic rotary feed valve comprises a main body (1) and a valve disc main body (2): the valve disc main body (2) is installed inside the main body (1), a limit control mechanism (3) is provided above the main body (1), a buffer protection mechanism (4) is provided on the side of the limit control mechanism (3), and a portable maintenance mechanism (5) is provided above the valve disc main body (2); The position limiting control mechanism (3) comprises a support seat (31) and an elastic clamping ring (32); the support seat (31) is provided on the top outer wall of the pneumatic rotary feed valve body (1) at the outer shell position; and the elastic clamping ring (32) is symmetrically provided on the side outer wall of the support seat (31).

2. A pneumatic rotary feed valve with self-limiting function according to claim 1, characterized in that: The buffer protection mechanism (4) comprises a butt joint pipe (41) and a buffer plate (42); the pneumatic rotary feed valve body (1) is provided with a butt joint pipe (41) directly above the feed pipe; and the buffer plates (42) are provided at symmetrically staggered height positions on the side inner wall of the butt joint pipe (41).

3. A pneumatic rotary feed valve with self-limiting function according to claim 2, characterized in that: The outer wall of the bottom end of the butt-joint pipe (41) is provided with a flange (43), and the outer wall of the top end of the feed pipe is provided with a flange (43), and the two sets of flanges (43) are fastened and installed by bolts and nuts.

4. The pneumatic rotary feed valve with self-limiting function according to claim 2, characterized in that: The buffer plate (42) is configured as an arc-shaped structure.

5. The pneumatic rotary feed valve with self-limiting function according to claim 1, characterized in that: The portable maintenance mechanism (5) comprises a placement groove (51), a protective plate (52) and a wear-resistant pad (53); the placement groove (51) is provided on the top outer wall of the valve disc body (2) in the direction of the feed end; the protective plate (52) is provided inside the placement groove (51); and the wear-resistant pad (53) is embedded in the top outer wall of the protective plate (52) at the center position.

6. The pneumatic rotary feed valve with self-limiting function according to claim 5, characterized in that: Positioning blocks (54) are arranged around the side outer wall of the protective plate (52) at equal intervals, and a positioning slot (55) is correspondingly provided around the top outer wall of the valve disc body (2) located at the placement groove (51), and the positioning blocks (54) and the positioning slot (55) are engaged with each other.

7. The pneumatic rotary feed valve with self-limiting function according to claim 6, characterized in that: A first thread groove (56) is formed on the top outer wall of the positioning block (54), and a second thread groove (57) is formed on the top outer wall of the valve disc body (2) located at the position of the positioning groove (55). The first thread groove (56) and the second thread groove (57) are threadedly mounted with the fastening bolt (58).

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