Self-cleaning gate valve

Abstract

The utility model discloses a self-cleaning gate valve which comprises a fixing frame and a gate body, a first sliding block is fixedly connected to the gate body, a first groove body matched with the first sliding block is formed in the fixing frame, a cross beam is integrally formed on the fixing frame, and a smoke channel is formed between the cross beam and a lower panel of the fixing frame. A second fixing block is connected to a lower panel of the fixing frame in a sliding mode, a third wedge-shaped face is arranged on the second fixing block, an arc-shaped face is arranged on the second fixing block, the arc-shaped face is connected with the third wedge-shaped face, and a fourth wedge-shaped face matched with the third wedge-shaped face is arranged on the end face, close to the lower panel of the fixing frame, of the gate body. According to the self-cleaning gate valve, the gate can be automatically cleaned in the using process, the labor intensity of workers is greatly reduced, reliable guarantee is provided for the production efficiency of factories, the economic benefits of enterprises are maintained, damage to the gate valve caused by frequent disassembly is avoided, and therefore the using cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of gate valve equipment, and particularly relates to a self-cleaning gate valve. BACKGROUND

[0002] When a low-temperature furnace is carbonizing carbon fibers, a large amount of exhaust gas is usually discharged. The exhaust gas not only has a large amount, but also contains a large amount of tar and fine carbon fiber filaments. The existing valve is mostly a gate valve, which is simple in structure, but during long-time operation, the tar and carbon fiber filaments discharged from the furnace will adhere to the valve disc of the valve. The adhesions gradually solidify to form a hard covering layer. With the passage of time, the solidified adhesions will hinder the normal movement of the valve disc, causing the sealing performance of the valve to fail, and eventually making the valve unable to be completely closed. This problem not only increases the cleaning frequency and labor intensity of workers, but also seriously affects the production efficiency, leading to a decrease in production, and further affecting the economic benefits of the enterprise. In addition, the gate valve will be damaged due to frequent disassembly, increasing the use cost.

[0003] Therefore, in view of the above technical problems, it is necessary to provide a self-cleaning gate valve.

[0004] The information disclosed in this background section is only intended to increase the understanding of the general background of the present utility model, and should not be considered as acknowledging or implying in any form that the information constitutes prior art known to those skilled in the art. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims to provide a self-cleaning gate valve, which can automatically clean the gate during use, reducing the cleaning frequency of the gate valve by workers, greatly reducing the labor intensity of workers, not only providing reliable protection for the production efficiency of the factory, but also maintaining the economic benefits of the enterprise, avoiding damage to the gate valve due to frequent disassembly, and thus reducing the use cost.

[0006] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides a self-cleaning gate valve, which comprises a fixed frame and a gate body, the gate body is fixedly connected with a first sliding block, a first groove body matched with the first sliding block is formed in the fixed frame, a crossbeam is integrally formed on the fixed frame, a flue gas passage is formed between the crossbeam and the lower panel of the fixed frame, a second fixed block is slidably connected to the lower panel of the fixed frame, a third wedge surface is formed in the second fixed block, an arc surface is arranged on the second fixed block, the arc surface is connected with the third wedge surface, a fourth wedge surface matched with the third wedge surface is formed in the end surface of the gate body close to the lower panel of the fixed frame, and the self-cleaning gate valve further comprises a driving assembly, which is used for opening and closing the flue gas passage.

[0007] In one or more embodiments of the utility model, the driving assembly includes fixed frame, the fixed frame is rotationally connected with second sleeve, the second sleeve is internally provided with internal thread matched with lead screw, the second sleeve is engaged in transmission in second sleeve, one end of lead screw is rotationally connected on gate body.

[0008] In one or more embodiments of the utility model, the upper panel of fixed frame is provided with fifth slot body, the sixth slot body is formed on the groove bottom wall of fifth slot body, the first sleeve matched with fifth slot body is integrally formed on second sleeve, the first rotating ring matched with sixth slot body is integrally formed on the end of first sleeve away from second sleeve.

[0009] In one or more embodiments of the utility model, the third slot body matched with lead screw is formed on gate body, the fourth slot body is formed on the groove bottom wall of third slot body, the second rotating ring matched with fourth slot body is integrally formed on lead screw, and the second rotating ring is fixed in fourth slot body.

[0010] In one or more embodiments of the utility model, hand wheel is fixedly installed on second sleeve.

[0011] In one or more embodiments of the utility model, first fixed block is fixedly connected on fixed frame, first spring is fixedly connected on first fixed block, connecting frame is fixedly connected on second fixed block, and one end of first spring away from first fixed block is fixedly connected on connecting frame.

[0012] In one or more embodiments of the utility model, connecting frame is L-shaped, second sliding block is fixedly connected on the end of connecting frame away from second fixed block, second sliding block is T-shaped, and second slot body matched with second sliding block is formed on the upper panel of fixed frame.

[0013] In one or more embodiments of the utility model, fixed box matched with cross beam is fixedly connected on fixed frame, second spring is fixedly installed in fixed box, protection block is fixedly connected on the end of second spring away from fixed box, and first wedge surface matched with fourth wedge surface is formed on the end of protection block away from fixed box.

[0014] In one or more embodiments of the utility model, a pair of butt joint flue is detachably installed on fixed frame, second bolt is arranged on the pair of butt joint flue, and screw hole matched with second bolt is formed on fixed frame.

[0015] In one or more embodiments of the utility model, the butt joint flue is equipped with an opening near the third wedge surface, the butt joint flue is equipped with a matching inclined surface, the inclined surface is equipped with a lubricating layer, the butt joint flue is fixedly connected with a storage box matching the opening, the storage box is blocked with a cover plate, the cover plate is equipped with a first bolt, the cover plate is screwed on the storage box, and the second fixed block is equipped with a pushing surface.

[0016] Compared with the prior art, the self-cleaning gate valve can automatically clean the gate during use, reduces the cleaning frequency of the gate valve by workers, greatly reduces the labor intensity of the workers, not only provides reliable guarantee for the production efficiency of the factory, but also maintains the economic benefit of the enterprise, avoids damage of the gate valve caused by frequent disassembly, and thereby reduces the use cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be simply introduced below. Obviously, the drawings in the following description are only some embodiments in the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0018] Figure 1 It is an embodiment of the utility model that the structure of the self-cleaning gate valve is shown in the figure.

[0019] Figure 2 It is an embodiment of the utility model that the structure of the fixed frame of the self-cleaning gate valve is shown in the figure.

[0020] Figure 3 It is an embodiment of the utility model that the sectional view of the self-cleaning gate valve is shown in the figure.

[0021] Figure 4 It is an embodiment of the utility model that the structure of the fixed frame of the self-cleaning gate valve is shown in the figure. Figure 3

[0022] Figure 5 It is an embodiment of the utility model that the sectional view of the fixed frame of the self-cleaning gate valve is shown in the figure. Figure 1

[0023] Figure 6 It is an embodiment of the utility model that the sectional view of the fixed frame of the self-cleaning gate valve is shown in the figure. Figure 2

[0024] Figure 7 It is an embodiment of the utility model that the structure of the fixed frame of the self-cleaning gate valve is shown in the figure. Figure 6

[0025] MAIN REFERENCE NUMERALS EXPLANATION: ​​​​

[0026] 1. Fixed frame; 11. Crossbeam; 12. First groove; 13. Threaded hole; 14. Second groove; 15. First fixing block; 151. First spring; 16. Fixing box; 161. Second spring; 17. Protective block; 171. First wedge-shaped surface; 2. Gate body; 21. Third groove; 22. Fourth groove; 23. Fourth wedge-shaped surface; 24. First slider; 3. Second fixing block; 31. Third wedge-shaped surface; 311. Arc-shaped Surface; 32, Connecting frame; 321, Second slider; 33, Pushing surface; 4, Fixing frame; 41, Fifth groove; 42, Sixth groove; 43, First sleeve; 44, First rotating ring; 45, Second sleeve; 451, Internal thread; 452, Handwheel; 46, Lead screw; 461, Second rotating ring; 5, Connecting flue; 51, Inclined surface; 52, Storage box; 53, Cover plate; 531, First bolt; 54, Second bolt. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0028] like Figures 1 to 5 As shown, a self-cleaning gate valve in one embodiment of this utility model includes a fixed frame 1 and a gate body 2. A first slider 24 is welded onto the gate body 2, and a first groove 12 matching the first slider 24 is formed on the fixed frame 1. A crossbeam 11 is integrally formed on the fixed frame 1, and a flue gas passage is formed between the crossbeam 11 and the lower panel of the fixed frame 1. A second fixing block 3 is slidably connected to the lower panel of the fixed frame 1. A third wedge-shaped surface 31 and an arc-shaped surface 311 are formed on the second fixing block 3, and the arc-shaped surface 311 and the third wedge-shaped surface 31 are connected. A fourth wedge-shaped surface 23 matching the third wedge-shaped surface 31 is formed on one end face of the gate body 2 near the lower panel of the fixed frame 1. The self-cleaning gate valve also includes a drive assembly for opening and closing the flue gas passage.

[0029] Specifically, the driving assembly can control the sliding of the gate body 2 in the fixed frame 1. When the gate body 2 moves downward in the fixed frame 1, the fourth wedge surface 23 contacts the third wedge surface 31, and the tar and carbon fiber filaments adhered to the third wedge surface 31 are scraped off. When the fourth wedge surface 23 contacts the lower panel of the fixed frame 1, the fourth wedge surface 23 tightly abuts against the third wedge surface 31, and the flue gas passage is closed. Thus, the gate valve does not need to be manually cleaned, and the automatic cleaning can be realized when the gate valve is closed every day, which can save labor costs and does not need to disassemble the gate valve, thereby ensuring the production efficiency and avoiding damage of the gate valve due to frequent disassembly.

[0030] In order to realize the cleaning of the third wedge surface 31, a pair of first fixed blocks 15 are welded on the fixed frame 1. A first spring 151 is welded on one end face of the first fixed block 15 close to the second fixed block 3. The second fixed block 3 is integrally formed with a connecting frame 32. One end of the first spring 151 away from the first fixed block 15 is welded on the connecting frame 32.

[0031] Specifically, when the gate body 2 contacts the second fixed block 3, the lowermost end of the fourth wedge surface 23 contacts the uppermost end of the third wedge surface 31. Because the uppermost end of the second fixed block 3 is provided with an arc surface 311 contacting the third wedge surface 31, as the gate body 2 gradually moves downward, the wedge cooperation between the fourth wedge surface 23 and the third wedge surface 31 causes the second fixed block 3 to be extruded, and the second fixed block 3 is extruded to compress the first spring 151, so that the second fixed block 3 slides on the upper panel of the fixed frame 1. When the lowermost end of the fourth wedge surface 23 contacts the lower panel of the fixed frame 1, the tar and carbon fiber filaments on the third wedge surface 31 are scraped off. At this time, the fourth wedge surface 23 tightly abuts against the third wedge surface 31, and the flue gas passage is closed. At the same time, because the arc surface 311 is provided on the second fixed block 3, the arc surface 311 does not abut against the fourth wedge surface 23, and the tar and carbon fiber filaments adhered to the fourth wedge surface 23 do not affect the sealing effect. The arc surface 311 can ensure that the tar and carbon fiber filaments on the third wedge surface 31 are cleaned, and can also ensure the sealing effect of the gate body 2 and the second fixed block 3 on the flue gas passage.

[0032] When the gate valve is opened, the gate body 2 slides upward. After the fourth wedge surface 23 and the third wedge surface 31 are separated, the first spring 151 is elastically deformed to push the second fixed block 3 away from the first fixed block 15. At this time, the uppermost end of the third wedge surface 31 returns to the initial position, and the uppermost end of the third wedge surface 31 is again on the same vertical line as the lowermost end of the fourth wedge surface 23, thereby ensuring the sealing effect of the gate body 2 and the second fixed block 3 on the flue gas passage when the gate valve is closed next time.

[0033] Further, the connecting frame 32 is L-shaped, and a second sliding block 321 is welded to one end of the connecting frame 32 away from the second fixed block 3, the second sliding block 321 is T-shaped, and a second groove 14 matching the second sliding block 321 is formed in the upper panel of the fixed frame 1. Specifically, the T-shaped second sliding block 321 can firmly fit the second fixed block 3 on the upper panel of the fixed frame 1, that is, after the third wedge surface 31 is extruded by the fourth wedge surface 23, the second fixed block 3 can slide on the upper panel of the fixed frame 1, without a gap between the second fixed block 3 and the upper panel of the fixed frame 1, and the tar and carbon fiber filaments on the third wedge surface 31 will not enter between the second fixed block 3 and the fixed frame 1 after being scraped off, further ensuring the sealing effect of the flue gas passage by the gate body 2 and the second fixed block 3.

[0034] At the same time, because the connecting frame 32 is arranged on the side wall of the second fixed block 3 away from the third wedge surface 31, the second groove 14 is on the right side of the third wedge surface 31, and the tar and carbon fiber filaments scraped off from the third wedge surface 31 will not fall into the second groove 14, ensuring that the second sliding block 321 can smoothly slide in the second groove 14.

[0035] It is worth noting that every time the gate valve is closed, the tar and carbon fiber filaments on the third wedge surface 31 will accumulate in front of the gate valve, which will affect the emission efficiency over time, and further, Figure 3 and Figure 4 As shown, the second fixed block 3 is provided with a pushing surface 33. The fixed frame 1 is detachably mounted with a pair of butt flue gas passages 5, and the butt flue gas passage 5 close to the third wedge surface 31 is provided with an opening. The butt flue gas passage 5 is provided with a slope 51 matching the opening, and the butt flue gas passage 5 is welded with a storage box 52 matching the opening. The storage box 52 is sealed with a cover plate 53, the cover plate 53 is provided with a first screw 531, and the cover plate 53 is threadedly connected to the storage box 52.

[0036] Specifically, when the gate valve is opened, the first spring 151 is elastically elongated to push the second fixed block 3 to a position away from the first fixed block 15, and when the second fixed block 3 slides on the upper panel of the fixed frame 1, the pushing surface 33 will push the tar and carbon fiber filaments scraped off, that is, push them onto the slope 51, and the tar and carbon fiber filaments on the slope 51 will fall into the storage box 52.

[0037] Preferably, the slope 51 is provided with a lubricating layer to prevent tar and carbon fiber filaments from sticking to the slope 51, and the storage box 52 is a transparent box. When the tar and carbon fiber filaments in the storage box 52 are full, the first screw 531 is twisted to remove the cover plate 53, and the tar and carbon fiber filaments can be discharged.

[0038] Furthermore, a second bolt 54 is provided on the pair of connecting flue gas ducts 5, and a threaded hole 13 matching the second bolt 54 is provided on the fixing frame 1. Specifically, when it is necessary to clean the gate valve as a whole, unscrewing the second bolt 54 can easily remove the fixing frame 1 as a whole.

[0039] Furthermore, a fixing box 16 matching the crossbeam 11 is welded onto the fixing frame 1. A second spring 161 is welded inside the fixing box 16. A protective block 17 is welded to the end of the second spring 161 away from the fixing box 16. A first wedge surface 171 matching the fourth wedge surface 23 is opened at the end of the protective block 17 away from the fixing box 16.

[0040] Specifically, the protective block 17 is slidably connected inside the fixed box 16, and the side wall of the gate body 2 and the crossbeam 11 are in contact. When the gate valve is opened, the entire gate body 2 is completely withdrawn from the flue gas passage. At this time, the protective block 17 abuts against the crossbeam 11 to prevent exhaust gas from being discharged between the crossbeam 11 and the fixed box 16, thus protecting the gate body 2 and preventing the lowest end of the fourth wedge surface 23 from being stuck with tar and carbon fiber filaments, ensuring the cleaning effect of the fourth wedge surface 23.

[0041] When the gate valve is closed, the gate body 2 moves downward, the fourth wedge surface 23 and the first wedge surface 171 come into contact and squeeze the first wedge surface 171. After the protective block 17 is subjected to the pressure of the fourth wedge surface 23, it is transmitted to the fixed box 16. The fixed box 16 elastically contracts, and the protective block 17 gradually slides into the fixed box 16, which will not affect the closing of the gate valve.

[0042] like Figure 2 , Figure 6 and Figure 7 As shown, the drive assembly includes a fixed frame 4, on which a second sleeve 45 is rotatably connected. The second sleeve 45 has an internal thread 451 that matches the lead screw 46. The second sleeve 45 engages with the drive mechanism within the second sleeve 45. One end of the lead screw 46 is rotatably connected to the gate body 2.

[0043] Specifically, a fifth groove 41 is formed on the top plate of the fixing frame 4, and a sixth groove 42 is formed on the bottom wall of the fifth groove 41. A first sleeve 43 that matches the fifth groove 41 is integrally formed on the second sleeve 45. A first rotating ring 44 that matches the sixth groove 42 is integrally formed on the end of the first sleeve 43 away from the second sleeve 45. A handwheel 452 is fixedly installed on the second sleeve 45. When the handwheel 452 is rotated clockwise, the second sleeve 45 rotates in the fifth groove 41. Under the thread engagement of the internal thread 451 and the lead screw 46, the lead screw 46 will rise, thereby opening the gate valve. When the handwheel 452 is rotated counterclockwise, the lead screw 46 will fall, thereby closing the gate valve.

[0044] A third slot 21 is formed on the gate body 2 and matches the lead screw 46, a fourth slot 22 is formed on the bottom wall of the third slot 21, the lead screw 46 is integrally formed with a second rotating ring 461 matching the fourth slot 22, and the second rotating ring 461 is fixed in the fourth slot 22. Specifically, one end of the lead screw 46 is inserted into the third slot 21, and the second rotating ring 461 is poured into the fourth slot 22, so that the connection between the lead screw 46 and the gate body 2 is more firm, and the torsional force between the lead screw 46 and the gate body 2 is prevented from causing the lead screw 46 and the gate body 2 to separate.

[0045] In use, as shown in the figure, the hand wheel 452 is twisted clockwise, the lead screw 46 is threadedly engaged with the second sleeve 45, the lead screw 46 gradually descends, and the gate body 2 slides downward in the fixed frame 1. Figures 2 to 5 When the gate body 2 slides downward, the fourth wedge surface 23 is in contact with the first wedge surface 171, and the protective block 17 is pushed away. As the gate body 2 continues to move downward, the fourth wedge surface 23 is in contact with the third wedge surface 31, and the fourth wedge surface 23 will scrape off the tar and carbon fiber filaments on the third wedge surface 31, and the gate valve is closed.

[0046] The hand wheel 452 is counterclockwise, the lead screw 46 rises, and the gate body 2 rises in the fixed frame 1. At this time, the fourth wedge surface 23 and the third wedge surface 31 are separated, the second fixed block 3 slides outward in the fixed frame 1 under the elastic elongation force of the first spring 151, and the scraped tar and carbon fiber filaments fall into the storage box 52 under the pushing of the connecting frame 32. As the gate body 2 continues to rise, the gate body 2 is withdrawn from the flue gas passage, the second spring 161 is elastically elongated, and the protective block 17 is abutted against the cross beam 11, thereby closing the flue gas passage and protecting the fourth wedge surface 23.

[0047] Compared with the prior art, the self-cleaning gate valve can automatically clean the gate during use, reduces the cleaning frequency of the gate valve by workers, greatly reduces the labor intensity of the workers, not only provides reliable protection for the production efficiency of the factory, but also maintains the economic benefits of the enterprise, avoids damage to the gate valve caused by frequent disassembly, and thereby reduces the use cost.

[0048] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0049] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes only one independent technical solution, and the specification is described in this way only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A self-cleaning gate valve, comprising a fixed frame and a gate body, a first sliding block is fixedly connected to the gate body, and a first groove body matched with the first sliding block is formed in the fixed frame, characterized in that, The fixed frame is integrally formed with a crossbeam, a flue gas passage is formed between the crossbeam and the lower panel of the fixed frame, a second fixing block is slidably connected to the lower panel of the fixed frame, a third wedge surface is formed in the second fixing block, an arc surface is arranged on the second fixing block and connected to the third wedge surface, a fourth wedge surface matching the third wedge surface is formed in the end surface of the gate body close to the lower panel of the fixed frame, and the self-cleaning gate valve further comprises a driving assembly for opening and closing the flue gas passage.

2. The self-cleaning flap valve of claim 1, wherein, The driving assembly comprises a fixed frame, a second sleeve is rotatably connected to the fixed frame, an internal thread matching the lead screw is formed in the second sleeve, and the second sleeve is engaged with the transmission in the second sleeve.

3. The self-cleaning flap valve of claim 2, wherein, A fifth groove is formed in the upper panel of the fixed frame, a sixth groove is formed in the groove bottom wall of the fifth groove, a first sleeve matching the fifth groove is integrally formed on the second sleeve, and a first rotating ring matching the sixth groove is integrally formed on the end of the first sleeve away from the second sleeve.

4. The self-cleaning flap valve of claim 3, wherein, A third groove matching the lead screw is formed in the gate body, a fourth groove is formed in the groove bottom wall of the third groove, and a second rotating ring matching the fourth groove is integrally formed on the lead screw and fixed in the fourth groove.

5. The self-cleaning flap valve of claim 3, wherein, A hand wheel is fixedly installed on the second sleeve.

6. The self-cleaning flap valve of claim 1, wherein, A first fixing block is fixedly connected to the fixed frame, a first spring is fixedly connected to the first fixing block, a connecting frame is fixedly connected to the second fixing block, and the end of the first spring away from the first fixing block is fixedly connected to the connecting frame.

7. The self-cleaning flap valve of claim 6, wherein, The connecting frame is L-shaped, a second sliding block is fixedly connected to the end of the connecting frame away from the second fixing block, the second sliding block is T-shaped, and a second groove matching the second sliding block is formed in the upper panel of the fixed frame.

8. The self-cleaning flap valve of claim 1, wherein, A fixed box matching the crossbeam is fixedly connected to the fixed frame, a second spring is fixedly installed in the fixed box, a protection block is fixedly connected to the end of the second spring away from the fixed box, and a first wedge surface matching the fourth wedge surface is formed in the end of the protection block away from the fixed box.

9. The self-cleaning flap valve of claim 1, wherein, A pair of butt flues is detachably installed on the fixed frame, a second bolt is arranged on the butt flue close to the third wedge surface, and a threaded hole matching the second bolt is formed in the fixed frame.

10. The self-cleaning flap valve of claim 9, wherein, An opening is arranged on the butt flue close to the third wedge surface, an inclined surface matching the opening is formed in the butt flue, a lubricating layer is arranged on the inclined surface, a storage box matching the opening is fixedly connected to the butt flue, a cover plate is arranged on the storage box, a first bolt is arranged on the cover plate, and the cover plate is threadedly connected to the storage box. A pushing surface is arranged on the second fixing block.

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