Wear-resistant corrosion-resistant butterfly valve

Abstract

The utility model belongs to butterfly valve technical field, and disclose a kind of wear-resistant corrosion-resistant butterfly valve, including valve body and the valve stem of movable installation in the inside top of valve body, the sidewall of valve stem is fixed with valve plate, and the sidewall of valve stem is equipped with wear ring, the corresponding side of wear ring and valve plate is flush, the both sides of valve plate are all contacted with the ceramic plate of round, and the surface of ceramic plate and valve plate is all annular shape distribution and is equipped with four positioning holes, and the positioning screw is arranged between the corresponding positioning hole, the tail portion of positioning screw is screwed with nut, and nut is contacted with the side of corresponding ceramic plate, the bottom of valve body is equipped with reinforcing assembly. By the above scheme, the problem that although the existing equipment has higher wear resistance to reduce the wear of valve plate in use, but the connection of valve plate and wear-resistant structure is prone to loosen due to corrosion, leading to poor internal sealing performance.

Description

Technical Field

[0001] This utility model belongs to the field of butterfly valve technology, specifically a wear-resistant and corrosion-resistant butterfly valve. Background Technology

[0002] Butterfly valves play an indispensable role in pipeline systems. Through their precise control functions and efficient operation, they ensure the smooth operation and safety of pipeline systems, thereby improving the safety level and production efficiency of pipeline systems. In order to ensure the long-term stable operation of pipeline systems in chemical plants, it is necessary to design a wear-resistant and corrosion-resistant butterfly valve.

[0003] Meanwhile, a wear-resistant and corrosion-resistant butterfly valve with application number CN202322975005.3 includes an adjusting rod, a valve body, and a valve plate. The valve body has a protrusion at its top, and a valve plate is located inside the valve body. The outer circumference of the valve plate has a detachable ceramic ring, and the inner circumference of the valve body has a ceramic layer that mates with the ceramic ring. The adjusting rod passes through the protrusion and is rotatably connected to it. The bottom end of the adjusting rod passes through the valve body, the ceramic layer, and is connected to the ceramic ring. The valve body has a limiting rod for restricting the rotation of the valve plate. The beneficial effects of this utility model are: the design of the ceramic ring and ceramic layer reduces wear during rotation and closure, improving service life; the sealing ring design seals the semi-circular block, preventing leakage, and is simple and effective.

[0004] However, the following problems were found in the implementation of the relevant technology: Although the existing equipment has a high wear resistance to reduce the wear of the valve plate during use, the connection between the valve plate and the wear-resistant structure is prone to loosening due to corrosion, resulting in poor internal sealing performance. Utility Model Content

[0005] To address the problems mentioned in the background art, this utility model provides a wear-resistant and corrosion-resistant butterfly valve that can effectively prevent the connection between the valve plate and the wear ring from loosening due to corrosion, and has the advantage of maintaining internal sealing performance for a long time.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a wear-resistant and corrosion-resistant butterfly valve, comprising a valve body and a valve stem movably mounted on the top side of the valve body. A valve plate is fixedly sleeved on the side wall of the valve stem, and a wear-resistant ring is installed on the side wall of the valve stem. The wear-resistant ring is flush with the corresponding side of the valve plate. Circular ceramic plates abut against both sides of the valve plate, and four positioning holes are distributed in a ring shape on the surface of both the ceramic plate and the valve plate. Positioning screws are inserted between the corresponding positioning holes, and nuts are screwed to the tails of the positioning screws, with the nuts abutting against one side of the corresponding ceramic plate. A reinforcing component is installed at the bottom of the valve body.

[0007] Preferably, the reinforcement component includes a support block installed at the bottom of the valve body and fixing blocks symmetrically installed at the bottom of both sides of the support block, and the bottoms of the support block and the fixing blocks are flush.

[0008] Preferably, the fixing block has a fixing groove on the side away from the support block, and two fixing holes are symmetrically opened at the bottom of the fixing groove, and fixing screws are screwed into the fixing holes.

[0009] Preferably, a rubber pad is bonded between the bottom of the support block and the fixing block, and the rubber pad is flush with the corresponding side of the support block and the fixing block.

[0010] Preferably, an L-shaped handle is connected to the top of the valve stem, and a rubber sleeve is fixedly fitted to one end of the handle.

[0011] Preferably, flanges are welded to both ends of the valve body, and the flanges are flush with the corresponding sides of the valve body.

[0012] Preferably, a washer is adhered to the side of the nut near the positioning screw, and the washer abuts against the corresponding side of the ceramic plate.

[0013] Preferably, a label is adhered to one side of the outer wall of the valve body, and the surface of the label is covered with a protective film.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. This utility model improves the wear resistance effect by using a wear-resistant ring fitted onto the side wall of the valve plate, which can prevent the sealing performance from deteriorating due to wear on the edge of the valve plate. At the same time, ceramic plates are installed on both sides of the valve plate and the wear-resistant ring, and the ceramic plates are secured to both sides of the valve plate by using positioning screws and nuts. In addition, the ceramic plates have good corrosion resistance, which can prevent the connection between the valve plate and the wear-resistant ring from loosening due to corrosion, thus ensuring the sealing performance of the internal structure.

[0016] 2. This utility model uses two fixing blocks at the bottom with fixing screws to connect and reinforce the valve body to the external structure, so that the valve body can remain stable when the pipeline system is subjected to vibration, and avoids loosening at the connection with the external pipeline. Attached Figure Description

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

[0018] Figure 2 This is a schematic diagram of the structure of the ceramic plate of this utility model;

[0019] Figure 3 This is a schematic diagram of the valve plate of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the fixing block of this utility model;

[0021] Figure 5 This is an exploded view of the positioning screw and nut of this utility model.

[0022] In the diagram: 1. Valve body; 2. Valve stem; 3. Valve plate; 4. Wear ring; 5. Ceramic plate; 6. Locating screw; 7. Nut; 8. Gasket; 9. Handle; 10. Rubber sleeve; 11. Support block; 12. Fixing block; 13. Fixing screw; 14. Rubber pad; 15. Flange; 16. Label. 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] like Figures 1 to 5 As shown, this utility model provides a wear-resistant and corrosion-resistant butterfly valve, including a valve body 1 and a valve stem 2 movably installed on the top inner side of the valve body 1. A valve plate 3 is fixedly sleeved on the side wall of the valve stem 2. The above structure constitutes the basic structure of a butterfly valve. A wear-resistant ring 4 is bonded to the side wall of the valve stem 2 with strong adhesive. The wear-resistant ring 4 and the corresponding side of the valve plate 3 are flush, ensuring that the ceramic plate 5 can be tightly attached to the corresponding side of the wear-resistant ring 4 and the valve plate 3. Circular ceramic plates 5 abut against both sides of the valve plate 3, and the surfaces of the ceramic plates 5 and the valve plate 3 are distributed in a ring shape. Four positioning holes are provided, and positioning screws 6 are inserted between the corresponding positioning holes. The positioning screws 6 are used to fix the ceramic plates 5 on both sides. The tail of the positioning screws 6 is screwed with nuts 7. The nuts 7 are tightened to ensure that the ceramic plates 5 on both sides can fit tightly against the corresponding sides of the valve plate 3, so that the liquid will not reach the connection between the valve plate 3 and the wear ring 4, thereby ensuring that the connection will not loosen due to corrosion. In this way, the sealing performance is guaranteed. The nuts 7 abut against one side of the corresponding ceramic plate 5. A reinforcing component is installed at the bottom of the valve body 1.

[0025] Specifically, the reinforcement components include a support block 11 welded to the bottom of the valve body 1 and fixing blocks 12 symmetrically welded to the bottom of both sides of the support block 11. The support block 11 and fixing blocks 12 are used to support the valve body 1 on the corresponding side of the external structure, and the bottoms of the support block 11 and fixing blocks 12 are flush to ensure that the bottom is flat.

[0026] Furthermore, the fixing block 12 has a fixing groove on the side away from the support block 11, and two fixing holes are symmetrically opened at the bottom of the fixing groove. Fixing screws 13 are screwed into the fixing holes to fix the fixing block 12 to the corresponding side of the external structure. The overall stability of the equipment can be increased by the cooperation of the fixing screws 13 in the two sets of fixing grooves.

[0027] Furthermore, a rubber pad 14 is bonded between the bottom of the support block 11 and the fixing block 12 to increase the friction with the contact surface of the external structure, thereby helping to improve the stability of the connection. The rubber pad 14 is flush with the corresponding sides of the support block 11 and the fixing block 12.

[0028] It is worth noting that an L-shaped handle 9 is coaxially connected to the top of the valve stem 2. The valve plate 3 on the side wall of the valve stem 2 can be rotated through the handle 9 to adjust the flow rate. A rubber sleeve 10 is fixedly fitted to one end of the handle 9. The rubber sleeve 10 can improve the grip and increase the friction, so that the operator can complete the adjustment smoothly.

[0029] It is worth noting that flanges 15 are welded to both ends of the valve body 1, and the flanges 15 are flush with the corresponding sides of the valve body 1. The valve body 1 is connected to the external pipeline through the flanges 15 on both sides.

[0030] It is worth mentioning that a washer 8 is glued to the side of the nut 7 near the positioning screw 6, and the washer 8 abuts against the corresponding side of the ceramic plate 5. The washer 8 can prevent the corresponding side of the nut 7 and the ceramic plate 5 from wearing each other.

[0031] It is worth emphasizing that a label 16 is attached to one side of the outer wall of the valve body 1. The label 16 has the current equipment number printed on its surface so that operators can find it quickly. The label 16 is also covered with a protective film to prevent the number from becoming blurred due to wear.

[0032] Working principle: The valve body 1 is connected to the external pipeline through flanges 15 on both sides. Then, the fixing block 12 is fixed to the corresponding side of the external structure by multiple fixing screws 13. The operator can control the valve plate 3 on the side wall of the valve stem 2 to rotate by turning the handle 9 to complete the flow rate adjustment. The wear-resistant ring 4 sleeved on the side wall of the valve plate 3 improves the wear resistance of the valve plate 3, which can prevent the sealing performance of the valve plate 3 from deteriorating due to wear. At the same time, ceramic plates 5 are installed on both sides of the valve plate 3 and the wear-resistant ring 4. Four positioning screws 6 and corresponding nuts 7 ensure that the ceramic plates 5 on both sides can fit tightly against the corresponding side of the valve plate 3. Since the ceramic plate 5 has good corrosion resistance, it can effectively prevent the connection between the valve plate 3 and the wear-resistant ring 4 from loosening due to corrosion, ensuring the sealing performance of the internal structure of the valve body 1.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wear-resistant and corrosion-resistant butterfly valve, comprising a valve body (1) and a valve stem (2) movably mounted on the top inner side of the valve body (1), characterized in that: The valve stem (2) is fixedly sleeved with a valve plate (3), and a wear-resistant ring (4) is installed on the side wall of the valve stem (2). The wear-resistant ring (4) and the corresponding side of the valve plate (3) are flush. Both sides of the valve plate (3) are in contact with a circular ceramic plate (5). The surfaces of the ceramic plate (5) and the valve plate (3) are provided with four positioning holes in a ring shape. Positioning screws (6) are inserted between the corresponding positioning holes. A nut (7) is screwed to the tail of the positioning screw (6), and the nut (7) is in contact with one side of the corresponding ceramic plate (5). A reinforcing component is installed at the bottom of the valve body (1).

2. The wear-resistant and corrosion-resistant butterfly valve according to claim 1, characterized in that: The reinforcement assembly includes a support block (11) installed at the bottom of the valve body (1) and a fixing block (12) symmetrically installed at the bottom of both sides of the support block (11), with the bottoms of the support block (11) and the fixing block (12) being flush.

3. The wear-resistant and corrosion-resistant butterfly valve according to claim 2, characterized in that: The fixing block (12) has a fixing groove on the side away from the support block (11), and two fixing holes are symmetrically opened at the bottom of the fixing groove, and fixing screws (13) are screwed into the fixing holes.

4. The wear-resistant and corrosion-resistant butterfly valve according to claim 2, characterized in that: A rubber pad (14) is bonded between the bottom of the support block (11) and the fixing block (12), and the rubber pad (14) is flush with the corresponding side of the support block (11) and the fixing block (12).

5. The wear-resistant and corrosion-resistant butterfly valve according to claim 1, characterized in that: The top of the valve stem (2) is connected to an L-shaped handle (9), and one end of the handle (9) is fixedly fitted with a rubber sleeve (10).

6. The wear-resistant and corrosion-resistant butterfly valve according to claim 1, characterized in that: Both ends of the valve body (1) are welded with flanges (15), and the flanges (15) are flush with the corresponding sides of the valve body (1).

7. The wear-resistant and corrosion-resistant butterfly valve according to claim 1, characterized in that: The nut (7) has a washer (8) attached to the side near the positioning screw (6), and the washer (8) abuts against the corresponding side of the ceramic plate (5).

8. The wear-resistant and corrosion-resistant butterfly valve according to claim 1, characterized in that: A label (16) is adhered to one side of the outer wall of the valve body (1), and the surface of the label (16) is covered with a protective film.

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