Spring assembly structure of anti-clogging ball valve

Abstract

The utility model relates to coal chemical industry ball valve assembly technical field especially relates to a kind of anti-clogging ball valve spring assembly structure, including deputy body, valve seat and ball, valve seat is set in the inner side of deputy body, ball is set to one side of deputy body, it is characterized by: the inner side of deputy body is provided with resistance surface, spring skeleton is installed in one side of resistance surface, one side of spring skeleton is provided with countersunk large hole, its other side is provided with perforation, column spring is set in countersunk large hole, deputy body is close to spring skeleton place and is provided with ash discharge inclined plane, coal cinder and dry coal powder accumulated on column spring can be discharged in time through ash discharge inclined plane. By setting perforation and ash discharge inclined plane, coal cinder and dry coal powder accumulated on column spring can be discharged in time through ash discharge inclined plane, simultaneously, through the cooperation of slag discharge channel and perforation, bilateral slag discharge can be realized, so that slag discharge is easier, without scale formation, to prevent switch jam when valve opening and closing.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology in coal chemical industry, and in particular to a spring assembly structure for an anti-clogging ball valve. Background Technology

[0002] For ball valves used in the coal chemical industry with unclean media, the most common problems with the spring assembly at the valve seat are scaling, slag blockage, and dust accumulation. The lifespan of the spring assembly is paramount. With prolonged use, both disc springs and column springs will become clogged and accumulate due to the solid-liquid complexes or dry coal dust in black water, gray water, and coal powder. Because conventional spring frames are designed with blind holes, only one side can discharge slag. If the valve installation direction is restricted, one side will always be unable to discharge slag, leading to long-term slag accumulation. Ultimately, this causes the spring assembly to lose its elasticity or increase resistance, resulting in valve sticking or even jamming during opening and closing. Utility Model Content

[0003] In view of the problems mentioned in the background art, the purpose of this utility model is to provide a spring assembly structure for an anti-clogging ball valve.

[0004] The present invention adopts the following technical solution.

[0005] A spring assembly structure for an anti-clogging ball valve includes a sub-body, a valve seat, and a ball. The valve seat is located inside the sub-body, and the ball is located on one side of the sub-body. The sub-body has an inner abutment surface, a spring frame is installed on one side of the abutment surface, a countersunk hole is located on one side of the spring frame, and a through hole is located on the other side. A column spring is installed inside the countersunk hole. An ash discharge slope is located near the spring frame on the sub-body, allowing coal slag and dry coal powder accumulated on the column spring to be discharged promptly through the ash discharge slope.

[0006] To facilitate the installation of the spring, the diameter of the through hole is smaller than the diameter of the countersunk hole, and the diameter of the through hole is the same as the inner diameter of the spring.

[0007] Preferably, the center line of the perforation coincides with the center line of the countersunk hole.

[0008] To facilitate the discharge of coal slag and dry coal powder into the flow channel, the ash discharge slope is adjacent to the support surface, and the dihedral angle α formed by the ash discharge slope and the end face of the spring frame is 45°.

[0009] In order to transmit the elastic thrust of the spring for fixing the sealing gasket, a retaining ring is provided on the side of the spring frame away from the bearing surface. One end of the spring abuts against the bottom surface of the countersunk hole, and the other end abuts against the retaining ring.

[0010] Preferably, the retaining ring is provided with an extension block on the side near the valve seat, and the extension block can be inserted into the cavity formed by the valve seat and the auxiliary body.

[0011] Preferably, a sealing gasket is installed in the cavity formed by the valve seat and the auxiliary body, and the extension block of the retaining ring contacts the sealing gasket.

[0012] To improve the efficiency of slag and ash discharge during spring slag removal, the end face of the spring frame near the buckle is joined with the buckle to form a slag discharge channel.

[0013] Beneficial effects: The ash-discharging ramp located near the spring frame actively guides slag discharge, providing a discharge channel for coal slag and dry coal powder around the column spring. Impurities can slide naturally down the ramp, preventing accumulation around the countersunk head holes and perforations of the spring. Simultaneously, the slag discharge channel formed between the spring frame and the retaining ring can catch residual impurities that fall from the column spring gap or are not completely discharged from the ash-discharging ramp. This dual slag discharge and anti-clogging mechanism, combining ash-discharging ramp and slag discharge channel, ensures long-term stable operation of the component in media containing impurities. It enhances anti-clogging capabilities and prevents functional failures caused by impurity accumulation. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a structural schematic diagram of the anti-clogging ball valve spring assembly of this utility model.

[0016] Figure 2 This is the utility model Figure 1 A magnified view of part A.

[0017] 1-Sub-body, 2-Valve seat, 3-Ball, 4-Supporting surface, 5-Spring skeleton, 6-Counterhead large hole, 7-Perforation, 8-Ash discharge slope, 9-Snap ring, 10-Slag discharge channel, 11-Extension block, 12-Sealing gasket, 13-Pillar spring, 14-Flow channel. Detailed Implementation

[0018] The technical solutions 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 are within the protection scope of this utility model.

[0019] Combination Figures 1-2As shown, a spring assembly structure for an anti-clogging ball valve includes a sub-body 1, a valve seat 2, and a ball 3. The valve seat 2 is located inside the sub-body 1, and the ball 3 is located on one side of the sub-body 1. The sub-body 1 is characterized by having a support surface 4 on its inner side, a spring frame 5 installed on one side of the support surface 4, a countersunk hole 6 on one side of the spring frame 5, and a through hole 7 on the other side. A column spring 13 is installed inside the countersunk hole 6, and a ash discharge slope 8 is provided near the spring frame 5 on the sub-body 1. The slag and dry coal powder accumulated on the column spring 13 can be discharged in time through the ash discharge slope 8.

[0020] The diameter of the perforation 7 is smaller than the diameter of the countersunk hole 6, and the diameter of the perforation 7 is the same as the inner diameter of the column spring 13.

[0021] Among them, the center line of the perforation 7 coincides with the center line of the countersunk hole 6.

[0022] Among them, the ash discharge inclined surface 8 is adjacent to the supporting surface 4, and the dihedral angle α formed by the ash discharge inclined surface 8 and the end face of the spring frame 5 is 45°.

[0023] Among them, a retaining ring 9 is provided on the side of the spring frame 5 away from the bearing surface 4, one end of the column spring 13 abuts against the bottom surface of the countersunk hole 6, and the other end abuts against the retaining ring 9.

[0024] Among them, the end face of the spring frame 5 near the buckle 9 and the buckle 9 together form a slag discharge channel 10.

[0025] Among them, the buckle 9 is provided with an extension block 11 on the side near the valve seat 2, and the extension block 11 can be inserted into the cavity formed by the valve seat 2 and the sub-body 1.

[0026] The valve seat 2 and the auxiliary body 1 form a cavity in which a sealing gasket 12 is installed, and the extension block 11 of the retaining ring 9 contacts the sealing gasket 12.

[0027] By setting countersunk holes 6 and through holes 7 on both sides of the spring frame 5, and designing a 45° inclined ash discharge slope 8 under the spring frame 5, vibration force is generated whether the valve is open or closed. Because of the through holes 7 in the spring frame 5, the remaining coal slag or dry coal powder accumulated on the column spring 13 will be discharged from the through holes of the spring frame 5 to the ash discharge slope 8 below, falling into the flow channel 14. Most of the remaining coal slag or coal ash will fall into the flow channel 14 by itself due to the through holes 7. Meanwhile, the installation direction of the ball valve will be determined according to the actual use of the valve, and can be either vertical or parallel to the flow channel 14. If installed parallel, the countersunk holes 6 and through holes 7 on both sides of the spring frame 5 facilitate slag discharge and prevent scaling. If installed vertically, the coal slag or coal ash will naturally discharge along the through holes 7, further demonstrating the advantages of this application in facilitating slag and ash discharge and its excellent anti-clogging ability.

[0028] When assembling sub-body 1, firstly, a slope is machined inside the cavity of sub-body 1 while retaining a certain flat surface. The slope is used for slag and ash discharge, and the flat surface is used to house the spring frame 5, ensuring the frame is installed horizontally. Then, the column spring 13 is installed into the spring frame 5, which has countersunk holes and perforations 7. The spring frame 5 is then installed into sub-body 1 as a whole, followed by the snap ring 9, sealing gasket 12, and valve seat 2. At this point, the assembly of sub-body 1 is complete. The assembly logic is simple, requiring no complex tooling. The fit between the perforation 7 and the inner diameter of the column spring 13, and the snap-fit ​​design between the snap ring 9 and the sealing gasket 12, allow for quick alignment of components, reducing assembly difficulty, shortening installation time, and improving efficiency through modular assembly. At the same time, because the ash discharge slope 8 and the slag discharge channel 10 can actively discharge slag, the components do not need to be frequently disassembled for cleaning (traditional structures require periodic disassembly of springs and scraping of accumulated slag). Even if maintenance is required, the snap-fit ​​connection of the snap ring 9 (not welded or bolted) facilitates quick disassembly, reducing maintenance time and component wear, and lowering long-term operating costs.

[0029] In summary, the anti-clogging ball valve spring assembly structure of this application provides a discharge channel for coal slag and dry coal powder around the spring 13 through the ash discharge slope 8. Impurities can slide naturally down the slope, avoiding accumulation around the countersunk head large hole 6 and perforation 7 of the spring. At the same time, the slag discharge channel 10 formed between the spring skeleton 5 and the retaining ring 9 can receive residual impurities that fall from the gap of the spring 13 or are not completely discharged from the ash discharge slope 8, preventing impurities from entering the cavity of the valve seat 2 and the sub-body 1. This forms a dual anti-clogging mechanism of ash discharge from the ash discharge slope 8 and slag discharge from the slag discharge channel 10, ensuring long-term stable operation of the assembly in media containing impurities and improving the service life of the assembly. In addition, if the valve seat 2 experiences slight retraction due to fluctuations in medium pressure or wear of the ball 3, the spring 13 can release elastic thrust through elastic deformation, pushing the valve seat 2 to reset in real time and maintaining sealing contact with the ball 3. Even if trace amounts of impurities adhere to the sealing surface, the continuous thrust of the spring 13 can offset the impact of the impurities on the sealing fit, prevent sealing failure, and achieve the effect of dynamic compensation of the sealing by elastic thrust.

[0030] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Those skilled in the art can understand that implementing all or part of the above-described embodiments and making equivalent changes in accordance with the claims of the present utility model are still within the scope of the utility model.

Claims

1. A spring assembly structure for an anti-clogging ball valve, comprising a sub-body (1), a valve seat (2), and a ball (3), wherein the valve seat (2) is disposed on the inner side of the sub-body (1), and the ball (3) is disposed on one side of the sub-body (1), characterized in that: The inner side of the sub-body (1) is provided with a bearing surface (4), a spring frame (5) is installed on one side of the bearing surface (4), a countersunk hole (6) is provided on one side of the spring frame (5), and a through hole (7) is provided on the other side. A column spring (13) is provided in the countersunk hole (6). An ash discharge slope (8) is provided near the spring frame (5) of the sub-body (1). The coal slag and dry coal powder accumulated on the column spring (13) can be discharged in time through the ash discharge slope (8).

2. The anti-clogging ball valve spring assembly structure as described in claim 1, characterized in that: The diameter of the perforation (7) is smaller than the diameter of the countersunk hole (6), and the diameter of the perforation (7) is the same as the inner diameter of the spring (13).

3. The anti-clogging ball valve spring assembly structure as described in claim 1, characterized in that: The center line of the perforation (7) coincides with the center line of the countersunk hole (6).

4. The anti-clogging ball valve spring assembly structure as described in claim 1, characterized in that: The ash discharge slope (8) is adjacent to the supporting surface (4), and the dihedral angle α formed by the ash discharge slope (8) and the end face of the spring frame (5) is 45°.

5. The anti-clogging ball valve spring assembly structure as described in claim 1, characterized in that: A buckle (9) is provided on the side of the spring frame (5) away from the bearing surface (4). One end of the column spring (13) abuts against the bottom surface of the countersunk hole (6), and the other end abuts against the buckle (9).

6. The anti-clogging ball valve spring assembly structure as described in claim 5, characterized in that: The end face of the spring skeleton (5) near the buckle (9) is surrounded by the buckle (9) to form a slag discharge channel (10).

7. The anti-clogging ball valve spring assembly structure as described in claim 5, characterized in that: An extension block (11) is provided on the side of the buckle (9) near the valve seat (2), and the extension block (11) can be inserted into the cavity formed by the valve seat (2) and the sub-body (1).

8. The anti-clogging ball valve spring assembly structure as described in claim 7, characterized in that: A sealing gasket (12) is installed in the cavity formed by the valve seat (2) and the sub-body (1), and the extension block (11) of the retaining ring (9) contacts the sealing gasket (12).

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