Anti-erosion fluorine-lined regulating valve

Abstract

The utility model discloses a kind of scouring-resistant fluorine-lined regulating valve, it is related to fluorine-lined regulating valve technical field, including main valve body, the left and right ends of main valve body are respectively fixedly connected with first connecting pipe and second connecting pipe, the top of main valve body is fixedly connected with mounting seat, the outside of first connecting pipe and second connecting pipe is fixedly connected with flange, the inner wall of second connecting pipe and mounting seat is provided with flow guide component, the inside of main valve body is provided with protection component.The utility model is provided with flow guide component, uses full-bore S type runner to reduce flow velocity, first flow guide block and second flow guide block can play the effect of preventing lining from being separated from the inner wall of valve body when scouring in pipeline, to improve the anti-scouring performance of lining, and four groups of first flow guide block and second flow guide block of first connecting pipe and second connecting pipe are equidistantly arranged, to ensure stress uniformity, further improve the anti-negative pressure effect of lining, to improve the structural strength and stability of lining.

Description

Technical Field

[0001] This utility model relates to the field of fluoropolymer-lined control valve technology, specifically an anti-erosion fluoropolymer-lined control valve. Background Technology

[0002] Control valves, also known as regulating valves, are used in industrial automation process control to adjust parameters such as flow rate, pressure, temperature, and liquid level of the medium. The valve body is usually made of metal. When it is necessary to transmit corrosive media, such as sulfuric acid, hydrochloric acid, hydrofluoric acid, aqua regia, various organic acids, strong acids, strong oxidants, and other corrosive media, the corrosive media can easily react chemically with the inner wall of the valve body, corroding the valve body. Therefore, it is necessary to install a lining with anti-corrosion effect inside the valve body.

[0003] In existing technologies, fluoroplastics, such as polytetrafluoroethylene (PTFE), are commonly used as lining materials. Fluoroplastics do not readily react with corrosive media and can be applied to the inner wall of the valve body through a compression molding process. However, when the scouring force is too great, it can cause the inner PTFE layer to crack and fall off, affecting the interior of the valve body. Therefore, an anti-scouring PTFE-lined control valve is needed to address the shortcomings of existing technologies. Utility Model Content

[0004] Technical problems to be solved

[0005] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an anti-erosion PTFE-lined regulating valve. By setting a flow guiding component and using a full-bore S-shaped flow channel to reduce the flow velocity, the first and second flow guiding blocks can prevent the lining from detaching from the inner wall of the valve body when it is eroded in the pipeline, thereby improving the erosion resistance of the lining. By setting a protective component and using a PTFE bellows to isolate the valve stem from the medium, the risk of corrosion of the packing seal is avoided and the friction coefficient is reduced, thereby improving the structural strength and stability of the lining.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an anti-erosion fluoropolymer-lined regulating valve, comprising a main valve body, with a first connecting pipe and a second connecting pipe fixedly connected to the left and right ends of the main valve body respectively, a mounting base fixedly connected to the top of the main valve body, flanges fixedly connected to the outer sides of the first and second connecting pipes, flow guiding components provided on the inner walls of the second connecting pipe and the mounting base, and a protective component provided inside the main valve body.

[0008] The present invention is further configured such that the flow guiding component includes a first flow guiding block, a first flow guiding groove, a second flow guiding block and a second flow guiding groove, and four sets of first flow guiding blocks are fixedly connected to the inner wall of the second connecting pipe and the mounting base. The surface of the first flow guiding block is provided with a first flow guiding groove, and the inner wall of the second connecting pipe and the mounting base is fixedly connected with a second flow guiding block. The surface of the second flow guiding block is provided with a second flow guiding groove.

[0009] The present invention is further configured such that the protective component includes a valve stem, a valve core, a fixing ring, a connecting ring, and a PTFE bellows. The valve stem is installed inside the mounting base. The valve core is fixedly connected to the bottom of the valve stem. The fixing ring is fixedly connected to the top of the valve core. The connecting ring is movably connected inside the fixing ring. The PTFE bellows is fixedly connected to the inner wall of the connecting ring.

[0010] The present invention is further configured such that four sets of the first guide blocks and the first guide grooves are equidistantly distributed on the inner wall of the second connecting pipe and the mounting base, the first guide blocks and the second guide blocks are crescent-shaped, and the position of the first guide grooves corresponds to the first guide blocks.

[0011] The present invention is further configured such that the flow guiding component includes a flow hole, the volume of the second flow guiding block is twice that of the first flow guiding block, and a flow hole is provided at the center of the interior of the second flow guiding block.

[0012] The present invention is further configured such that the main valve body, the first connecting pipe, and the second connecting pipe form an S-shape, and a first reinforcing rod is inclinedly provided between the outer peripheral wall of the first connecting pipe and the main valve body and between the outer peripheral wall of the second connecting pipe and the outer peripheral wall of the main valve body.

[0013] The present invention is further configured such that four sets of second reinforcing rods are fixedly connected to the outer surfaces of the second connecting pipe and the mounting base, and the positions of the second reinforcing rods correspond to the first guide block and the second guide block.

[0014] Beneficial effects:

[0015] I. This utility model uses a flow guiding component and a full-bore S-shaped flow channel to reduce the flow velocity. The first and second flow guiding blocks can prevent the lining from detaching from the inner wall of the valve body when it is being scourdled in the pipe, thereby improving the lining's scour resistance. Furthermore, the four sets of first and second flow guiding blocks in the first and second connecting pipes are equally spaced to ensure uniform force distribution, further improving the lining's resistance to negative pressure, thereby enhancing the lining's structural strength and stability.

[0016] Second, this utility model, through the setting of protective components, uses PTFE bellows to isolate the valve stem from the medium, avoiding the risk of corrosion of the packing seal and reducing the friction coefficient, thereby improving the service life of the device.

[0017] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This utility model Figure 1 A cross-sectional view of the main valve body.

[0020] Figure 3 This is a structural schematic diagram of the protective component of this utility model;

[0021] Figure 4 This utility model Figure 2 A magnified view of a portion of point A in the middle.

[0022] In the diagram: 1. Main valve body; 2. First connecting pipe; 3. Second connecting pipe; 4. Mounting base; 5. Flange; 6. Flow guiding assembly; 601. First flow guiding block; 602. First flow guiding groove; 603. Second flow guiding block; 604. Second flow guiding groove; 605. Flow hole; 7. Protective assembly; 701. Valve stem; 702. Valve core; 703. Fixing ring; 704. Connecting ring; 705. PTFE bellows; 8. First reinforcing rod; 9. Second reinforcing rod. 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 Figure 1-4 As shown, this utility model provides a technical solution: an anti-erosion fluoropolymer-lined regulating valve, including a main valve body 1, with a first connecting pipe 2 and a second connecting pipe 3 fixedly connected to the left and right ends of the main valve body 1 respectively, and a mounting seat 4 fixedly connected to the top of the main valve body 1. Flanges 5 are fixedly connected to the outer sides of the first connecting pipe 2 and the second connecting pipe 3. External pipes can be connected to the flanges of the first connecting pipe 2 and the second connecting pipe 3 through the flanges 5, which achieves the effects of convenient disassembly, high strength, and good sealing performance. The inner walls of the second connecting pipe 3 and the mounting seat 4 are provided with flow guiding components 6, and the interior of the main valve body 1 is provided with protective components 7.

[0025] like Figure 2 and Figure 4 As shown, the flow guiding assembly 6 includes a first flow guiding block 601, a first flow guiding groove 602, a second flow guiding block 603, and a second flow guiding groove 604. Four sets of first flow guiding blocks 601 are fixedly connected to the inner wall of the second connecting pipe 3 and the mounting base 4. The surface of the first flow guiding block 601 is provided with a first flow guiding groove 602. The inner wall of the second connecting pipe 3 and the mounting base 4 is fixedly connected with a second flow guiding block 603. The surface of the second flow guiding block 603 is provided with a second flow guiding groove 604. The first flow guiding groove 602 and the second flow guiding groove 604 are arc-shaped to facilitate the flow of liquid. The arrangement of the first flow guiding block 601 and the second flow guiding block 603 offsets the water flow velocity, reduces the scouring force of the water flow on the interior, and prevents the lining from falling off due to the scouring of high-speed particles.

[0026] like Figure 2 and Figure 3 As shown, the protective assembly 7 includes a valve stem 701, a valve core 702, a fixing ring 703, a connecting ring 704, and a PTFE bellows 705. The valve stem 701 is installed inside the mounting base 4. The valve core 702 is fixedly connected to the bottom of the valve stem 701, and the fixing ring 703 is fixedly connected to the top of the valve core 702. The connecting ring 704 is movably connected inside the fixing ring 703, allowing the connecting ring 704 to rotate within the fixing ring 703 when connected to a manual drive mechanism, ensuring the stability of the device. The PTFE bellows 705 is fixedly connected to the inner wall of the connecting ring 704. The mounting base 4 can connect to the actuator or the manual drive mechanism at the valve stem 701. The actuator and the manual drive mechanism drive the valve stem 701 to move, and under the action of the valve core 702, the main valve body 1 is closed or opened. At the same time, the PTFE bellows 705 is stretched to isolate corrosive media and reduce the coefficient of friction.

[0027] like Figure 4 As shown, four sets of first guide blocks 601 and first guide channels 602 are equidistantly distributed on the inner walls of the second connecting pipe 3 and the mounting base 4 to ensure uniform force distribution and further improve the negative pressure resistance of the liner. The first guide blocks 601 and the second guide blocks 603 are crescent-shaped and the arc-shaped surfaces are set in the direction of flow to better guide the flow. The position of the first guide channel 602 corresponds to the first guide block 601, forming a wave-like barrier to gradually consume the scouring force and avoid affecting the interior.

[0028] like Figure 4 As shown, the flow guiding component 6 also includes a flow hole 605. The volume of the second flow guiding block 603 is twice that of the first flow guiding block 601. The first flow guiding block 601 has a smaller volume to avoid particle accumulation. The flow hole 605 is provided in the center of the second flow guiding block 603. The flow hole 605 enables the diversion and drainage of water flow and particles, ensuring smooth water flow and reducing particle accumulation.

[0029] like Figure 1 and Figure 2 As shown, the main valve body 1, the first connecting pipe 2, and the second connecting pipe 3 form an S-shape. The full-bore S-shaped flow channel reduces the flow velocity. The outer peripheral wall of the first connecting pipe 2 and the main valve body 1 are both inclinedly provided with first reinforcing rods 8, which play a role in improving the structural strength of the valve body.

[0030] like Figure 1 and Figure 3 As shown, four sets of second reinforcing rods 9 are fixedly connected to the outer surfaces of the second connecting pipe 3 and the mounting base 4, respectively. The positions of the second reinforcing rods 9 correspond to the first guide block 601 and the second guide block 603, thereby enhancing the robustness of the internal structure of the valve body.

[0031] Working principle: When using, such as Figure 1 and Figure 2 As shown, the external pipes can be connected to the flanges at the first connecting pipe 2 and the second connecting pipe 3 via the flange 5. An actuator or manual drive mechanism is installed on the top of the main valve body 1 via the mounting base 4. When internal flow occurs, the flow passes through the S-shaped channel formed by the main valve body 1, the first connecting pipe 2, and the second connecting pipe 3. Figure 3 and Figure 4 As shown, the water is guided by the first guide block 601 and the second guide block 603, gradually consuming the water flow velocity and reducing the scouring force of the water flow on the interior. The flow hole 605 inside the second guide block 603 realizes the diversion and drainage of water flow and particles, ensuring smooth water flow and reducing particle accumulation.

[0032] like Figure 2 and Figure 3 As shown, by activating the actuator or manually driving the mechanism, the valve stem 701 is moved, and under the action of the valve core 702, the main valve body 1 is closed or opened. At the same time, the PTFE bellows 705 is stretched to isolate the corrosive medium and reduce the friction coefficient. The above is the complete working principle of this device.

[0033] It should be understood that numerous specific implementation decisions can be made during the development of any actual implementation method, and in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. An erosion resistant fluoropolymer lined control valve comprising a main valve body (1) characterised in that: The left and right ends of the main valve body (1) are respectively fixedly connected to a first connecting pipe (2) and a second connecting pipe (3). The top of the main valve body (1) is fixedly connected to a mounting base (4). The outer sides of the first connecting pipe (2) and the second connecting pipe (3) are fixedly connected to flanges (5). The inner walls of the second connecting pipe (3) and the mounting base (4) are provided with flow guiding components (6). The interior of the main valve body (1) is provided with protective components (7).

2. The anti-washout fluoropolymer-lined control valve according to claim 1, wherein: The flow guiding assembly (6) includes a first flow guiding block (601), a first flow guiding groove (602), a second flow guiding block (603), and a second flow guiding groove (604). Four sets of first flow guiding blocks (601) are fixedly connected to the inner wall of the second connecting pipe (3) and the mounting base (4). The surface of the first flow guiding block (601) is provided with a first flow guiding groove (602). The inner wall of the second connecting pipe (3) and the mounting base (4) is fixedly connected with a second flow guiding block (603). The surface of the second flow guiding block (603) is provided with a second flow guiding groove (604).

3. The erosion-resistant fluoropolymer-lined regulating valve according to claim 2, characterized in that: The protective assembly (7) includes a valve stem (701), a valve core (702), a retaining ring (703), a connecting ring (704), and a PTFE bellows (705). The valve stem (701) is installed inside the mounting base (4). The valve core (702) is fixedly connected to the bottom of the valve stem (701). The retaining ring (703) is fixedly connected to the top of the valve core (702). The connecting ring (704) is movably connected inside the retaining ring (703). The PTFE bellows (705) is fixedly connected to the inner wall of the connecting ring (704).

4. The anti-washout fluoropolymer-lined control valve according to claim 3, wherein: Four sets of the first guide block (601) and the first guide groove (602) are equidistantly distributed on the inner wall of the second connecting pipe (3) and the mounting base (4). The first guide block (601) and the second guide block (603) are crescent-shaped, and the position of the first guide groove (602) corresponds to the first guide block (601).

5. The anti-washout fluoropolymer-lined control valve according to claim 4, wherein: The flow guiding component (6) further includes a flow hole (605), the volume of the second flow guiding block (603) is twice that of the first flow guiding block (601), and the flow hole (605) is provided at the center of the interior of the second flow guiding block (603).

6. The anti-washout trim fluoropolymer lined control valve of claim 2 wherein: The main valve body (1), the first connecting pipe (2), and the second connecting pipe (3) form an S-shape. The outer peripheral wall of the first connecting pipe (2) and the main valve body (1) are both inclinedly provided with a first reinforcing rod (8) between them and the outer peripheral wall of the second connecting pipe (3) and the outer peripheral wall of the main valve body (1).

7. The anti-washout trim fluoropolymer lined control valve of claim 2 wherein: Four sets of second reinforcing rods (9) are fixedly connected to the outer surfaces of the second connecting pipe (3) and the mounting base (4), respectively. The positions of the second reinforcing rods (9) correspond to the first guide block (601) and the second guide block (603).

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