Corrosion-resistant valve

Abstract

The utility model relates to valve technical field, concretely relates to a kind of corrosion-resistant valve, including valve body and the first flange of fixed installation in the valve body output, the input of the valve body is rotatably installed with second flange, the filter seat is rotatably arranged between valve body and second flange, the top end of the filter seat is penetrated and the lower end is opened with round hole, the second flange is communicated with valve body between through round hole, the through cavity that is communicated with round hole is penetrated and opened between the two opposite outer side walls of the filter seat, filter frame can be replaced by handle extraction filter screen, without disassembling flange, multiple square cavities can install different precision filter screen, adapt to various working conditions, limit groove and limit piece cooperation form dynamic seal, reduce medium leakage, rotary filter seat can adjust the angle of filter frame, and then facilitate adaptive adjustment according to actual installation environment.

Description

Technical Field

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

[0002] Traditional valves, when used for extended periods in corrosive media or fluids containing impurities, are prone to sealing failure and shortened lifespan due to corrosion or blockage. While some existing valves incorporate filter structures, they still suffer from the following problems: 1. Replacing the filter screen requires disassembling the valve or flange, which is a cumbersome operation; 2. The filter structure is fixed and cannot be adjusted, making it unable to adapt to different working conditions; 3. The connection between the rotating parts and the valve body is prone to corrosion due to media leakage.

[0003] Therefore, there is an urgent need for a corrosion-resistant valve that is easy to maintain, flexibly adjustable, and has good sealing performance. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a corrosion-resistant valve that can effectively solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: This utility model provides a corrosion-resistant valve, including a valve body and a first flange fixedly installed at the output end of the valve body, a second flange rotatably installed at the input end of the valve body, and further comprising: The filter seat is rotatably disposed between the valve body and the second flange. A circular hole is opened through the top end of the filter seat and through the bottom end. The second flange and the valve body are connected through the circular hole. A through cavity connected to the circular hole is opened between the two opposite outer walls of the filter seat. The filter frame is inserted into the through cavity in a suitable manner, and the top of the filter frame is provided with several square cavities through the bottom. Each of the several square cavities is detachably installed with a filter screen, and one of the filter screens is inserted into the through cavity in a suitable manner.

[0006] Furthermore, annular limiting grooves are provided at the input port of the valve body and at the bottom of the second flange.

[0007] Furthermore, annular limiting members are fixedly installed at both the top and bottom of the filter base, and the two annular limiting members are respectively rotatably installed in the corresponding annular limiting grooves.

[0008] Furthermore, screws are threaded onto both opposite outer walls of the filter base, with the heads of the two screws threaded through and extending into the through cavity, and abutting against the outer wall of the filter frame.

[0009] Furthermore, a stop block is fixedly installed at each of the four inner corners of the square cavity, the bottom of the stop block is flush with the bottom of the filter frame, and the bottom of the filter screen abuts against the top of the corresponding stop block.

[0010] Furthermore, handles are fixedly installed at both ends of the filter frame, and both handles are positioned at the center of the end face of the filter frame.

[0011] The technical solution provided by this utility model has the following advantages compared with the known prior art: Quick maintenance: The filter screen can be replaced simply by pulling out the handle; no flange removal is required. Multi-stage filtration: Multiple square chambers can be fitted with filters of different precision to adapt to various working conditions; Corrosion-resistant design: The limiting groove and the limiting component work together to form a dynamic seal, reducing media leakage; Flexible adjustment: The angle of the filter frame can be adjusted by rotating the filter base, which makes it easy to adapt to the actual installation environment. Attached Figure Description

[0012] 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.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the valve body structure of this utility model; Figure 3 This is a schematic diagram of the installation structure of the filter base and filter frame of this utility model; Figure 4 This is a schematic diagram of the disassembly structure of the filter base and filter frame of this utility model.

[0014] The labels in the diagram represent: 1. Valve body; 11. First flange; 12. Second flange; 13. Annular limiting groove; 2. Filter base; 21. Annular limiting component; 22. Round hole; 23. Through cavity; 24. Screw; 3. Filter frame; 31. Square cavity; 32. Filter screen; 33. Handle. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, 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, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0016] The present invention will be further described below with reference to the embodiments.

[0017] Example 1 Reference Figure 1-4 This is the first embodiment of the present utility model, which discloses a corrosion-resistant valve, including a valve body 1 and a first flange 11 fixedly installed at the output end of the valve body 1; Valve body 1 adopts a ball valve structure, and the valve core is a full-bore CF8M stainless steel ball; Structural form: It adopts an integral casting structure, including valve body, valve cover and valve stem assembly; Material selection: Main body material: CF8M stainless steel (ASTM A351 standard); Optional materials: Duplex stainless steel 2205 or PTFE-lined; Key dimensional parameters: Valve body wall thickness: 8mm for DN50, 15mm for DN300 (increasing proportionally); Flow channel diameter: 90% of the standard nominal diameter; Valve stem diameter: 12mm for DN50, 25mm for DN300; Surface treatment: The inner surface has a Ra ≤ 3.2μm and is mirror-polished. Lining thickness ≥ 3mm (lining type); A second flange 12 is rotatably mounted at the input end of the valve body 1, and a filter seat 2 is rotatably disposed between the valve body 1 and the second flange 12; First flange 11: Connection method: integrally cast with the valve body; Sealing surface type: RF raised surface; Number of bolt holes: 4 holes for DN50, 12 holes for DN300; Second flange 12: Rotating structure: supported by bearings; Axial displacement compensation: ±3mm; Rotation angle: 0-360° continuously adjustable; The top of the filter seat 2 has a circular hole 22 extending through the bottom. The second flange 12 is connected to the valve body 1 through the circular hole 22. A through cavity 23 communicating with the circular hole 22 is provided between the two opposite outer walls of the filter seat 2. The filter frame 3 is inserted into the through cavity 23 in a suitable manner. The top of the filter frame 3 has several square cavities 31 extending through the bottom. Filter screens 32 are detachably installed in the several square cavities 31, and one of the filter screens 32 is inserted into the through cavity 23 in a suitable manner.

[0018] Filter holder 2: The diameter of the 22mm round hole is 80% of the standard nominal diameter. Dimensions of the through cavity 23: Length × Width = 1.2D × 0.6D; Filter box 3: Number of square cavities 31: 3 in standard configuration; Filter size 32: Mesh size: 20-200 mesh (selectable); Material: 316L stainless steel woven mesh.

[0019] Example 2 Reference Figure 1-4 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: the input port of the valve body 1 and the bottom of the second flange 12 are provided with annular limiting grooves 13. The groove depth of the annular limiting groove 13 is 5-8mm and the width is 10-15mm. Fluororubber sealing rings are embedded in the limiting groove 13. Annular limiting members 21 are fixedly installed at the top and bottom of the filter seat 2. The outer diameter tolerance of the annular limiting member 21 is h7 grade. The two annular limiting members 21 are respectively adapted to be rotatably installed in the corresponding annular limiting grooves 13. Screws 24 are threadedly installed on the two opposite outer walls of the filter seat 2. The locking torque of the screws 24 is 15N·m. The heads of the two screws 24 are threaded through and inserted into the through cavity 23, and abut against the outer wall of the filter frame 3. Each of the four inner corners of several square cavities 31 is fixedly equipped with a stop block, the bottom of which is flush with the bottom of the filter frame 3. The bottom of several filter screens 32 abuts against the top of the corresponding stop block. When the mesh count of multiple filter screens 32 increases sequentially, the fluid passes through filter screens of different precision in sequence to form multi-stage filtration. Both ends of the filter frame 3 are fixedly equipped with handles 33, and both handles 33 are located at the center of the end face of the filter frame 3 to avoid affecting the sliding or disassembly of the filter frame 3.

[0020] The remaining structure is the same as that in Example 1.

[0021] The corrosion-resistant valve described in this utility model is mainly used for the conveying and control of corrosive media or fluids containing impurities. Its core functions include fluid control, impurity filtration, and rapid maintenance. The following details its working process: 1. Valve initial state Valve body 1: When the valve is in the open or closed state, the valve core is controlled by an external drive mechanism to regulate the flow or interruption of fluid.

[0022] First flange 11 and second flange 12: respectively connected to the piping system. The second flange 12 can rotate relative to the valve body 1 to accommodate different installation angles.

[0023] Filter seat 2: Located between valve body 1 and second flange 12, it can rotate freely, and its internal circular hole 22 is connected to the valve flow channel.

[0024] Filter frame 3: Inserted into the through cavity 23 of filter seat 2, one of the filter screens 32 faces the fluid channel, and the other filter screens 32 are reserved or used for multi-stage filtration. The filter pore size of the filter screens 32 can be the same or different, depending on the actual filtration requirements.

[0025] 2. Fluid passes through the valve Fluid flow direction: The medium enters from the second flange 12, flows through the round hole 22 of the filter seat 2, then enters the cavity of the valve body 1, and finally flows out from the first flange 11.

[0026] Impurity filtration: When the fluid flows through the through cavity 23, it is intercepted by the filter screen 32 in the filter frame 3, which contains impurities such as solid particles and precipitates.

[0027] If multiple filters (32) are used in a multi-stage filtration system, impurities of different particle sizes can be intercepted sequentially, thereby improving the filtration effect.

[0028] Corrosion-resistant design: The valve body, flange, and filter assembly are made of corrosion-resistant materials to ensure long-term stable operation.

[0029] The engagement of the annular limiting member 21 and the annular limiting groove 13 forms a dynamic seal to prevent media leakage and corrosion of rotating parts.

[0030] 3. Replacement and maintenance of filter screen 32 Replacement conditions: When filter 32 becomes clogged, causing an increase in pressure drop or a decrease in flow, it needs to be cleaned or replaced.

[0031] Operating steps: Loosen the fixing screws 24: Use a tool to loosen the screws 24 on both sides of the filter seat 2 to release the lock on the filter frame 3.

[0032] Remove filter frame 3: Hold handle 33 and pull the filter frame outward to separate it from the through cavity 23.

[0033] Replace or clean the filter 32: If a multi-screen design is adopted, the filter frame 3 can be rotated to align the spare filter 32 with the flow channel, enabling rapid switching.

[0034] If thorough cleaning is required, the clogged filter screen 32 can be removed from the square cavity 31 for cleaning or replacement.

[0035] Reinsert and secure: Push the filter frame 3 back into the through cavity 23 to ensure that the target filter screen 32 is facing the fluid channel.

[0036] Tighten screw 24 to press the filter frame 3 firmly to prevent it from loosening.

[0037] 4. Filter base 2 angle adjustment (optional) If the pipe layout requires adjustment of the flow direction or the orientation of the filter screen 32, the filter base 2 can be rotated manually. Loosen the bolts on the second flange 12 (if a large angle adjustment is required).

[0038] Rotate the filter base 2 to the target angle so that the filter screen 32 is in the optimal working position.

[0039] Retighten the flange bolts to ensure a seal.

[0040] 5. Valve Closure and Sealing When valve body 1 is closed, the valve core blocks the fluid, and the filtration system stops working.

[0041] The rotary sealing structure between the second flange 12 and the filter seat 2 remains sealed to prevent media leakage.

[0042] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of this utility model.

Claims

1. A corrosion-resistant valve, characterized in that, The valve body (1) includes a valve body (1) and a first flange (11) fixedly installed at the output end of the valve body (1). A second flange (12) is rotatably installed at the input end of the valve body (1). The valve body (1) also includes: The filter seat (2) is rotatably disposed between the valve body (1) and the second flange (12). The top end of the filter seat (2) is provided with a circular hole (22) through the bottom end. The second flange (12) and the valve body (1) are connected through the circular hole (22). A through cavity (23) connected to the circular hole (22) is provided between the two opposite outer walls of the filter seat (2). A filter frame (3) is inserted into a through cavity (23) in a suitable manner. The top of the filter frame (3) is provided with a number of square cavities (31) through the bottom. A filter screen (32) is detachably installed in each of the square cavities (31), and one of the filter screens (32) is inserted into the through cavity (23) in a suitable manner.

2. The corrosion-resistant valve according to claim 1, characterized in that, The valve body (1) and the bottom of the second flange (12) are both provided with annular limiting grooves (13).

3. The corrosion-resistant valve according to claim 2, characterized in that, The filter seat (2) is fixedly installed with annular limiting members (21) at both the top and bottom ends. The two annular limiting members (21) are respectively rotatably installed in the corresponding annular limiting grooves (13).

4. The corrosion-resistant valve according to claim 1, characterized in that, Screws (24) are threaded onto the two opposite outer walls of the filter seat (2). The heads of the two screws (24) are threaded through and inserted into the through cavity (23), and abut against the outer wall of the filter frame (3).

5. A corrosion-resistant valve according to claim 1, characterized in that, Each of the four inner corners of the square cavity (31) is fixedly equipped with a stop block, the bottom of the stop block is flush with the bottom of the filter frame (3), and the bottom of the filter screen (32) abuts against the top of the corresponding stop block.

6. A corrosion-resistant valve according to claim 1, characterized in that, Both ends of the filter frame (3) are fixedly installed with handles (33), and both handles (33) are located at the center of the end face of the filter frame (3).

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