An electric fluorine-lined stop valve with adjustable flow

Abstract

The utility model relates to the technical field of stop valve, and disclose a stop valve mainly used for controlling the flow of fluid, can realize the function of full opening or full closing, is widely used in chemical industry, petroleum, electric power, pharmacy and other trades, is applicable to the pipeline system needing to strictly control fluid flow. It can be used for water, steam, gas and a variety of medium, when the valve is completely closed, the valve and the valve seat closely adhere, can effectively prevent fluid passing through, to cut off the fluid in the pipeline, in the utility model, the bottom of the tongue is formed by the set resistance wall and the flow outlet, and the resistance wall is attached to the inner wall of the wear ring, so when the tongue and the central through hole gradually separate, the passage of the flow outlet can gradually increase or decrease, thereby adjusting the cross-sectional size of the fluid medium flow, adjusting the flow rate of the stop valve, the assembly gap of the sealing plug column is matched by the set sealing cover and sealing core, the sealing core and the valve chamber form abutting seal, to avoid fluid medium from assembly place leakage.

Description

Technical Field

[0001] This utility model relates to the field of gate valve technology, specifically to an adjustable flow electric fluoropolymer-lined gate valve. Background Technology

[0002] Gate valves are primarily used to control fluid flow, enabling them to be fully open or fully closed. They are widely used in industries such as chemical, petroleum, power, and pharmaceutical, and are suitable for pipeline systems requiring strict control of fluid flow. They can be used with various media such as water, steam, and gas. When the valve is fully closed, the valve disc and seat are tightly fitted, effectively preventing fluid from passing through and cutting off the flow in the pipeline.

[0003] Existing gate valves can also regulate the flow rate of fluid media by partially opening, but the adjustment range is small and almost negligible. Moreover, when existing gate valves are kept in the open state for a long time, leakage is prone to occur at the assembly of the valve cover and the plug.

[0004] Therefore, to address the inadequacy of existing requirements, we propose an adjustable flow rate electrically powered fluoropolymer-lined shut-off valve. Utility Model Content

[0005] This utility model provides an adjustable flow electric fluoropolymer-lined shut-off valve, which has the advantages of adjusting the flow rate of fluid in the valve body, good sealing effect, and simple maintenance and repair, thus solving the problems mentioned in the background art.

[0006] This utility model provides the following technical solution: an adjustable flow electric fluoropolymer-lined shut-off valve, comprising a valve body and a valve cover, wherein the valve cover is installed on the top of the valve body, a valve chamber is formed inside the valve body, a plug is slidably installed inside the valve cover, the end of the plug extends into the valve chamber, a sealing seat is provided in the valve chamber, a central through hole is provided on the sealing seat, a wear-resistant ring is installed in the central through hole, the plug is located directly above the wear-resistant ring, a plug tongue is connected to the end of the plug, a plurality of flow-blocking walls are symmetrically arranged at the bottom of the plug tongue, a vent is formed between the flow-blocking walls, and the plug tongue seals the wear-resistant ring through the plug tongue.

[0007] Preferably, the valve body has a first channel and a second channel formed on both sides, which connect to the valve chamber. The first channel connects to the bottom of the sealing seat, and the second channel connects to the top of the sealing seat. The first channel is connected to the second channel through the central through hole.

[0008] Preferably, the tongue is inserted into the wear-resistant ring through the flow-blocking wall, and the outer wall of the flow-blocking wall is in contact with the inner wall of the wear-resistant ring.

[0009] More preferably, both the flow barrier wall and the outer wall of the plug tongue are provided with a fluoroplastic liner to prevent the plug tongue and the flow barrier wall from being corroded by strong acids and alkalis during use.

[0010] More preferably, the top of the wear-resistant ring is provided with a flexible part, and the tongue is provided with a sealing part for abutting against the flexible part.

[0011] More preferably, the bottom of the plug is provided with reinforcing ribs to increase the strength of the flow-blocking wall.

[0012] Preferably, a sealing cover is fastened between the valve cover and the valve chamber, and a sealing core is provided inside the sealing cover. The inner wall of the sealing core is tightly fitted with the outer wall of the plug.

[0013] More preferably, the valve body is provided with a fluoroplastic lining along the inner wall of the valve chamber. The fluoroplastic lining gives it excellent corrosion resistance and can withstand corrosion from various strong acids, strong alkalis and strong oxidants, making it suitable for conveying highly corrosive gases and liquids at high temperatures.

[0014] More preferably, the bottom of the sealing core is provided with a flexible part two that abuts against the top of the valve body, and the sealing core forms a seal with the top of the valve chamber through the flexible part two.

[0015] Preferably, the top of the sealing cover is connected to an electric actuator for driving the plunger to move up and down, the bottom of the electric actuator is equipped with a sealing shell, the sealing shell surrounds the plunger, and the end of the sealing shell is sealed to the top of the sealing cover.

[0016] This utility model has the following beneficial effects:

[0017] 1. In this utility model, the bottom of the plug tongue is formed by the set flow-blocking wall and the drain port, and the flow-blocking wall is attached to the inner wall of the wear-resistant ring. Therefore, as the plug tongue gradually separates from the central through hole, the passage of the drain port can gradually increase or decrease. Thus, by adjusting the cross-sectional size of the fluid medium, the flow rate of the shut-off valve can be adjusted. Compared with the existing plug structure, the adjustment range of this structure is significantly increased.

[0018] 2. In this utility model, by setting the sealing cover and sealing core to cooperate with the sealing plug in the assembly gap, and when the valve cover is installed on the valve body by bolt structure, the sealing core and the valve chamber form an abutment seal to prevent fluid medium from leaking from the assembly point.

[0019] 3. In this utility model, the flexible part on the wear-resistant ring comes into contact with the sealing part on the plug tongue, so that the two are sealed and closed, thereby closing the wear-resistant ring on the central through hole, thus avoiding the problem that the existing hard contact seal will fail to close due to wear during use.

[0020] 4. In this utility model, the exposed part of the plug is protected by the sealing shell, so that the entire plug is isolated from the environment, thereby effectively extending the effective duration of the lubricating medium applied during assembly.

[0021] 5. In this utility model, the cover assembly consists of a valve cover, a sealing cover, and a sealing core. The cover assembly can be disassembled by bolts to open the valve chamber in the valve body, thereby facilitating the user to perform regular maintenance and repair on the wear ring inside the valve chamber and the plug tongue at the bottom of the plug. Attached Figure Description

[0022] Figure 1 This is a cross-sectional view of the valve body of this utility model.

[0023] Figure 2 This is a half-sectional schematic diagram of an adjustable flow electric fluoropolymer-lined shut-off valve according to the present invention.

[0024] Figure 3 This is a three-dimensional structural diagram of the tongue plug of this utility model;

[0025] Figure 4 This is a three-dimensional structural diagram of the wear-resistant ring of this utility model;

[0026] Figure 5 This is a three-dimensional structural diagram of the flow-blocking wall of this utility model;

[0027] Figure 6 This is a three-dimensional structural diagram of the reinforcing rib of this utility model;

[0028] Figure 7 This is a three-dimensional structural diagram of the plunger of this utility model;

[0029] Figure 8 This is a cross-sectional view of the sealing cap of this utility model;

[0030] Figure 9 This is a three-dimensional structural diagram of the sealing core of this utility model;

[0031] Figure 10 This is a three-dimensional structural diagram of the valve body of this utility model.

[0032] In the diagram: 1. Valve body; 10. Valve chamber; 11. First channel; 12. Second channel; 13. Central through hole; 100. Sealing seat; 130. Wear-resistant ring; 131. Flexible part one; 2. Valve cover; 20. Plug; 21. Sealing cover; 22. Sealing core; 23. Plug tongue; 24. Flow-blocking wall; 25. Drain port; 220. Flexible part two; 230. Sealing part; 231. Reinforcing rib; 3. Electric actuator; 30. Sealing shell. Detailed Implementation

[0033] 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.

[0034] like Figure 1 As shown, an adjustable flow electric fluoropolymer-lined shut-off valve includes a valve body 1, with a valve chamber 10 formed inside the valve body 1. A sealing seat 100 is disposed inside the valve chamber 10, and a central through hole 13 is provided on the sealing seat 100. A first channel 11 and a second channel 12 connecting the valve chamber 10 are formed on both sides of the valve body 1. The first channel 11 connects to the bottom of the sealing seat 100, and the second channel 12 connects to the top of the sealing seat 100. The first channel 11 is connected to the second channel 12 through the central through hole 13. The first channel 11 and the second channel 12 are respectively connected to the upper and lower ends of the sealing seat 100 and are connected through the central through hole 13 on the sealing seat 100.

[0035] In this embodiment, the fluid medium enters the valve chamber 10 through the first channel 11, and the fluid medium in the valve chamber 10 enters the second channel 12 through the central through hole 13 and flows out of the valve body 1 through the second channel 12. Thus, when the first channel 11 is the inlet and the second channel 12 is the outlet, the fluid medium can be buffered and the flow rate of the fluid medium can be reduced.

[0036] like Figure 2 As shown, it also includes a valve cover 2. The valve cover 2 is installed on the top of the valve body 1. A plug 20 is slidably installed inside the valve cover 2. A sealing cover 21 is fastened between the valve cover 2 and the valve chamber 10. The valve cover 2 is fixedly assembled to the valve body 1 by a bolt structure, and the sealing cover 21 is fastened to the top of the valve body 1 so as to seal the valve chamber 10 inside the valve body 1 through the sealing cover 21. An electric actuator 3 for driving the plug 20 to move up and down is connected to the top of the sealing cover 21.

[0037] In this embodiment, the electric actuator 3 drives the plunger 20 to move downward, and the plunger 20 gradually inserts into the central through hole 13, thus closing the fluid passage between the first channel 11 and the second channel 12; conversely, when the electric actuator 3 drives the plunger 20 to move upward, the central through hole 13 is opened, and the fluid passage between the first channel 11 and the second channel 12 is connected and open.

[0038] like Figures 1-5As shown, the end of the plug 20 extends into the valve chamber 10, and the end of the plug 20 is connected to a plug tongue 23. The bottom of the plug tongue 23 is symmetrically provided with several flow-blocking walls 24, and a drain port 25 is formed between the flow-blocking walls 24. When the plug tongue 23 moves upward to open the central through hole 13, the fluid medium in the first channel 11 flows into the second channel 12 through the drain port 25 between the flow-blocking walls 24.

[0039] In this embodiment, the vent 25 formed between the flow-blocking walls 24 at the bottom of the plug tongue 23 changes its opening size as the plug tongue 23 moves, thereby regulating the flow rate of the fluid medium entering the second channel 12 from the first channel 11, and thus regulating the flow rate of the fluid medium through this type of shut-off valve.

[0040] like Figures 1-5 As shown, a wear-resistant ring 130 is installed inside the central through hole 13. The wear-resistant ring 130 can effectively prevent wear on the sealing seat 100 located at the central through hole 13, thereby avoiding the problem of sealing failure due to wear. Regularly inspecting and replacing the wear-resistant ring 130 can prolong the service life of this type of shut-off valve. The plug 20 is located directly above the wear-resistant ring 130. The plug tongue 23 is inserted into the wear-resistant ring 130 through the flow-blocking wall 24. The outer wall of the flow-blocking wall 24 is in contact with the inner wall of the wear-resistant ring 130. The plug 20 seals the wear-resistant ring 130 through the plug tongue 23. When the wear-resistant ring 130 moves up and down with the plug tongue 23, the outer wall of the flow-blocking wall 24 is in contact with the inner wall of the wear-resistant ring 130, thereby forming a separate passage for the drain port 25 between the flow-blocking walls 24. After the flow-blocking wall 24 is completely separated from the wear-resistant ring 130, the drain port 25 is also completely separated from the wear-resistant ring 130, thereby fully opening the central through hole 13.

[0041] In this embodiment, the flow-blocking wall 24 at the bottom of the plug tongue 23 cooperates with the wear-resistant ring 130. By moving up and down with the plug 20, the size of the passage of the drain port 25 between the flow-blocking walls 24 can be adjusted. When the flow-blocking wall 24 is completely separated from the wear-resistant ring 130, the drain port 25 is also completely separated from the wear-resistant ring 130, thereby fully opening the central through hole 13 on the sealing seat 100. This allows for the adjustment of the connection state between the first channel 11 and the second channel 12 between the valve chambers 10, as well as the flow rate of the fluid medium during connection.

[0042] like Figures 1-5As shown, the top of the wear ring 130 is provided with a flexible part 131, and the plug tongue 23 is provided with a sealing part 230 for abutting against the flexible part 131. The plug tongue 23 abuts against and fits against the wear ring 130. The flexible part 131 is provided at the contact point between the wear ring 130 and the plug tongue 23, so that as the plug tongue 23 moves down, the sealing part 230 and the flexible part 131 form a sealing structure to completely close and seal the central through hole 13. When the flow is kept closed, the flexible part 131 can effectively maintain the sealing performance, thereby avoiding the mechanical degradation caused by the plug tongue 23 and the wear ring 130 being in hard contact for a long time, which would lead to the problem of leakage.

[0043] like Figure 6 As shown, the bottom of the plug tongue 23 is also provided with a reinforcing rib 231 to increase the strength of the flow barrier wall 24. In order to avoid the flow barrier wall 24 from deforming with the flow of the fluid medium, which would result in it being unable to be inserted into the wear ring 130 or causing a lot of wear on the inner wall of the wear ring 130 after slight deformation, the strength of the flow barrier wall 24 is increased by the reinforcing rib 231 to prevent it from deforming under force.

[0044] like Figure 6 As shown, the end face of the reinforcing rib 231 has a curved structure to reduce the impact of the fluid medium on it through the curved surface.

[0045] like Figures 7-10 As shown, a sealing core 22 is provided inside the sealing cover 21. The inner wall of the sealing core 22 is tightly fitted with the outer wall of the plug 20. The valve cover 2 fastens the sealing cover 21 onto the top of the valve body 1. The sealing core 22 is provided between the inner cavity of the sealing cover 21 and the valve body 1. A flexible part 220 is provided at the bottom of the sealing core 22 to abut against the top of the valve body 1. The sealing core 22 forms a seal with the top of the valve chamber 10 through the flexible part 220. The bottom of the sealing core 22 seals the valve chamber 10, and its inner wall is tightly fitted with the outer wall of the plug 20 to completely seal the plug 20 and the valve chamber 10, thereby preventing the fluid medium from leaking from the through assembly of the plug 20, so that it can be used in a normally open working environment.

[0046] In this embodiment, the sealing cover 21 and the sealing core 22 cooperate to seal the plug 20 and the valve chamber 10 after the valve cover 2 is firmly assembled with bolts, so that the shut-off valve can be kept in the open state for a long time. In contrast, the existing shut-off valve structure is prone to leakage at the assembly of the valve cover 2 and the plug 20 when it is kept in the open state for a long time.

[0047] like Figures 1-9As shown, a sealing shell 30 is installed at the bottom of the electric actuator 3. The sealing shell 30 surrounds the plunger 20, and the end of the sealing shell 30 is sealed to the top of the sealing cover 21. The sealing shell 30 can protect the exposed part of the plunger 20 and prevent the plunger 20 from being exposed to the external environment, thereby extending the effective time of the lubricating medium applied during assembly and increasing the service life of this type of shut-off valve.

[0048] like Figure 10 As shown, in this type of gate valve, a bolt assembly structure can also be provided between the plug 20 and the sealing shell 30, and a handle can be installed on its top so that it can be manually opened and closed, thereby reducing the overall length of the gate valve and making it suitable for pipelines with small assembly space.

[0049] like Figures 1-10 As shown, in this embodiment, the walls of the internal components of the valve body of the shut-off valve are all lined with fluoroplastics. The fluoroplastics are special fluoropolymers with high temperature resistance limits, specifically perfluoroethylene propylene or perfluoroolefin propylene. When the valve cover 2 is threaded onto the valve body 1, the sealing cover 21 and the sealing core 22 cooperate to seal the assembly and exposed parts of the plug 20. The valve cover 2, the sealing cover 21, and the sealing core 22 constitute the cover assembly. The cover assembly can be disassembled by bolts to open the valve chamber 10 in the valve body 1, thereby facilitating the user to perform regular maintenance and repair on the wear ring 130 inside the valve chamber 10 and the plug tongue 23 at the bottom of the plug 20.

Claims

1. An adjustable flow rate electrically powered fluoropolymer-lined shut-off valve, comprising a valve body (1) and a valve cover (2), wherein the valve cover (2) is mounted on the top of the valve body (1), a valve chamber (10) is formed inside the valve body (1), and a plunger (20) is slidably mounted inside the valve cover (2), the end of the plunger (20) penetrating into the valve chamber (10), characterized in that: A sealing seat (100) is provided in the valve chamber (10), and a central through hole (13) is provided on the sealing seat (100). A wear-resistant ring (130) is installed in the central through hole (13), and the plug (20) is located directly above the wear-resistant ring (130). The end of the plunger (20) is connected to a tongue (23). The bottom of the tongue (23) is provided with several flow-blocking walls (24) in a symmetrical manner. A drain port (25) is formed between the flow-blocking walls (24). The plunger (20) seals the wear-resistant ring (130) through the tongue (23).

2. The adjustable flow rate electrically-lined fluoropolymer-lined shut-off valve according to claim 1, characterized in that: The tongue (23) is inserted into the wear ring (130) through the flow-blocking wall (24), and the outer wall of the flow-blocking wall (24) is in contact with the inner wall of the wear ring (130).

3. The adjustable flow rate electrically-lined fluoropolymer-lined shut-off valve according to claim 1, characterized in that: A sealing cover (21) is fastened between the valve cover (2) and the valve chamber (10). A sealing core (22) is provided inside the sealing cover (21). The inner wall of the sealing core (22) is tightly fitted to the outer wall of the plug (20).

4. The adjustable flow rate electrically-lined fluoropolymer-lined shut-off valve according to claim 2, characterized in that: The wear-resistant ring (130) has a flexible part (131) on its top, and the tongue (23) has a sealing part (230) for abutting against the flexible part (131).

5. The adjustable flow rate electrically-lined fluoropolymer-lined shut-off valve according to claim 2, characterized in that: The bottom of the tongue (23) is also provided with reinforcing ribs (231) to increase the strength of the flow-blocking wall (24).

6. The adjustable flow rate electrically-lined fluoropolymer-lined shut-off valve according to claim 3, characterized in that: The bottom of the sealing core (22) is provided with a flexible part two (220) that abuts against the top of the valve body (1), and the sealing core (22) forms a seal with the top of the valve chamber (10) through the flexible part two (220).

7. The adjustable flow rate electrically-lined fluoropolymer-lined shut-off valve according to claim 3, characterized in that: The top of the sealing cap (21) is connected to an electric actuator (3) for driving the plunger (20) to move up and down.

8. The adjustable flow rate electrically-lined fluoropolymer-lined shut-off valve according to claim 7, characterized in that: The bottom of the electric actuator (3) is fitted with a sealing shell (30), which surrounds the plunger (20), and the end of the sealing shell (30) is sealed to the top of the sealing cover (21).

9. An adjustable flow rate electrically-lined fluoropolymer-lined shut-off valve according to any one of claims 1 to 8, characterized in that: The valve body (1) has a first channel (11) and a second channel (12) formed on both sides to connect the valve chamber (10).

10. The adjustable flow rate electrically-lined fluoropolymer-lined shut-off valve according to claim 9, characterized in that: The first channel (11) is connected to the bottom of the sealing seat (100), and the second channel (12) is connected to the top of the sealing seat (100). The first channel (11) is connected to the second channel (12) through the central through hole (13).

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