Leak-proof three-way valve

Abstract

The utility model provides a leakproof three-way valve, which relates to the technical field of three-way valves, and comprises a partition plate, the partition plate is fixedly arranged in a valve body, the middle position of the partition plate is of a horizontal structure, and the two ends of the partition plate are of inclined structures; and the cover plate is located above the connecting pipe, and six connecting holes are annularly formed in the surface of the cover plate. The liquid inlet pipe on the left side of the valve body is a medium inlet, the interior of the valve body is divided into an upper runner space and a lower runner space through the partition plate, the design that the two ends of the partition plate are of an inclined structure facilitates flow division of liquid, the through hole in the middle horizontal section is matched with the plug plate, and opening and closing control over runners is achieved; the three-way valve solves the problems that an existing three-way valve sealing piece can make direct contact with a high-temperature medium, the sealing piece is prone to softening or cracking, a runner separation structure of a three-way valve is mostly of a straight plate type design, turbulent flow is prone to being formed at the corner when the high-temperature medium flows through, and erosive wear to a sealing face is aggravated.

Description

Technical Field

[0001] This utility model relates to the field of three-way valve technology, and in particular to a leak-proof three-way valve. Background Technology

[0002] Three-way valves are frequently used in crude oil transportation to change the direction of fluid flow. The three-way valve achieves this function mainly by controlling the opening and closing of the seals between different flow channels. However, in actual production, the temperature of the medium is not always at room temperature. There are many cases where the medium is in high temperature condition. Therefore, the high temperature resistance and sealing performance of the seals are very important.

[0003] Based on the above, existing three-way valves still have the following two shortcomings in use:

[0004] First, the existing three-way valve seals come into direct contact with high-temperature media. Under high-temperature conditions, the physical properties of the seals will change, and they are prone to softening, hardening or cracking, leading to media leakage.

[0005] Secondly, the flow channel separation structure of traditional three-way valves is mostly a straight plate design. When high-temperature media flows through, turbulence is easily formed at the corners, which aggravates the erosion and wear of the sealing surface and shortens the service life of the three-way valve. Utility Model Content

[0006] This utility model relates to a leak-proof three-way valve, which solves the problems of existing three-way valves where the sealing parts come into direct contact with high-temperature media, and the sealing parts are prone to softening, hardening or cracking, leading to media leakage. In addition, the flow channel separation structure of three-way valves is mostly a straight plate design, which can easily form turbulence at the corners when high-temperature media flows through, which will aggravate the erosion and wear of the sealing surface.

[0007] This utility model provides a leak-proof three-way valve, specifically including: a valve body;

[0008] The middle part of the valve body is a barrel-shaped structure, and the left and right ends of the valve body are frustum-shaped structures. An inlet pipe is fixedly installed on the left end of the valve body, a second outlet pipe is fixedly installed on the right end of the valve body, a first outlet pipe is fixedly installed on the lower end face of the middle part of the valve body, and a connecting pipe is fixedly installed on the upper end face of the middle part of the valve body.

[0009] A partition plate is fixedly installed inside the valve body. The middle part of the partition plate is horizontal, and the two ends of the partition plate are inclined.

[0010] The cover plate is located above the connecting pipe. The surface of the cover plate has six connecting holes in a ring. The cover plate is connected to the connecting pipe by bolts. A fixing block is installed on the upper end face of the cover plate.

[0011] An adjusting block is located above a fixed block. Two sets of connecting plates are symmetrically installed on the outer end face of the adjusting block, and the lower end face of the connecting plates is fixedly connected to the fixed block.

[0012] The handwheel has an adjusting rod fixedly installed at the middle position of its lower end face. The upper part of the adjusting rod has a threaded outer end face, and a stopper plate is fixedly installed on the lower end face of the adjusting rod.

[0013] Furthermore, a through hole is provided in the middle of the surface of the partition plate. The inner diameter of the through hole is the same as the outer diameter of the plug plate. Two second grooves are provided on the inner end surface of the through hole. A second retaining ring is fixedly installed at the upper part of the inside of the through hole.

[0014] Furthermore, a first retaining ring is fixedly installed at the lower part of the inside of the first liquid outlet pipe, and two first grooves are formed on the inner end surface of the first liquid outlet pipe.

[0015] Furthermore, two rubber plugs are installed on the outer end face of the plug plate, and the outer end face of the rubber plugs has an arc-shaped structure.

[0016] Furthermore, the adjusting block has a threaded hole inside, and the adjusting block is threadedly connected to the adjusting rod.

[0017] Furthermore, resistance strips are evenly installed on the outer end faces of the left and right ends of the valve body, and the outer end faces of the resistance strips have an arc-shaped structure.

[0018] Furthermore, a plug is installed on the lower end face of the cover plate, and the plug is snapped into the inside of the connecting pipe. Through holes are opened on the surfaces of the cover plate, the plug, and the fixing block, and the adjusting rod is slidably snapped into the through holes inside the cover plate, the plug, and the fixing block.

[0019] This utility model provides a leak-proof three-way valve, which has the following beneficial effects:

[0020] 1. The inlet pipe on the left side of the valve body is the medium inlet, and the first outlet pipe at the lower middle of the valve body and the second outlet pipe on the right side are the outlets. The partition plate divides the interior of the valve body into upper and lower flow channel spaces. The inclined structure design at both ends of the partition plate helps to divert the liquid. The through hole in the middle horizontal section cooperates with the plug plate to realize the opening and closing control of the flow channel.

[0021] 2. The adjusting rod and the adjusting block are connected by threads. Turning the handwheel can drive the stopper plate to move up and down, thereby switching the flow direction of the medium or cutting off the flow. When the liquid needs to be discharged from the first outlet pipe, turning the handwheel can make the stopper plate lock into the through hole on the surface of the partition plate, preventing the liquid from flowing upward to the valve body. When the liquid needs to be discharged from the second outlet pipe, turning the handwheel will cause the adjusting rod to drive the stopper plate downward. When the stopper plate is locked inside the first outlet pipe, the stopper plate can block the first outlet pipe, allowing the liquid to pass through the through hole on the surface of the partition plate and be discharged from the second outlet pipe.

[0022] 3. A second retaining ring is fixedly installed at the upper end of the through hole. The second retaining ring can limit the position of the plug plate. At this time, the rubber plug at the outer end of the plug plate is engaged in the second groove on the inner wall of the through hole, which can improve the sealing performance. When conveying high-temperature media, the upper and lower end faces of the plug plate are in direct contact with the media, while the rubber plug at the outer end of the plug plate is engaged in the first and second grooves and will not be in direct contact with the high-temperature media, thus protecting the rubber plug.

[0023] 4. The threaded connection between the adjusting block and the adjusting rod has a self-locking characteristic. After the handwheel is rotated to the position, the thread friction can prevent the adjusting rod from loosening on its own due to medium pressure or vibration, ensuring the stability of the plug plate position and avoiding leakage caused by displacement of the sealing surface. The plug at the lower end of the cover plate is locked in the connecting pipe and tightened with bolts to prevent the medium from overflowing from the upper end of the valve body. When the adjusting rod passes through the through hole of the cover plate, plug, and fixing block, the possibility of fluid seepage is reduced. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0025] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0026] In the attached diagram:

[0027] Figure 1 A schematic diagram of the overall device structure of this utility model is shown;

[0028] Figure 2 A schematic diagram of the internal structure of the valve body of this utility model is shown;

[0029] Figure 3 This diagram shows the internal structure of the valve body when the first outlet pipe of this invention is blocked.

[0030] Figure 4 This invention provides a schematic diagram of the internal structure of the valve body when the second outlet pipe is blocked.

[0031] Figure 5 A schematic diagram of the connection structure between the adjusting screw and the stopper plate of this utility model is shown;

[0032] Figure 6 A schematic diagram of the valve body structure of this utility model is shown;

[0033] List of reference numerals in the attached diagram:

[0034] 1. Valve body; 101. Inlet pipe; 102. First outlet pipe; 1021. First groove; 1022. First retaining ring; 103. Second outlet pipe; 104. Connecting pipe; 105. Resistance bar; 2. Divider plate; 201. Second retaining ring; 202. Second groove; 3. Cover plate; 301. Plug; 302. Fixing block; 4. Adjusting block; 401. Connecting plate; 5. Handwheel; 501. Adjusting rod; 6. Plug plate; 601. Rubber plug. Detailed Implementation

[0035] 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. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] Example 1: Please refer to Figures 1 to 6 :

[0037] This utility model proposes a leak-proof three-way valve, comprising: valve body 1;

[0038] The middle part of the valve body 1 is a barrel-shaped structure, and the left and right ends of the valve body 1 are frustum-shaped structures. The left end of the valve body 1 is fixedly installed with an inlet pipe 101, the right end of the valve body 1 is fixedly installed with a second outlet pipe 103, the lower end face of the middle part of the valve body 1 is fixedly installed with a first outlet pipe 102, and the upper end face of the middle part of the valve body 1 is fixedly installed with a connecting pipe 104.

[0039] The partition plate 2 is fixedly installed inside the valve body 1. The middle part of the partition plate 2 is horizontal and the two ends of the partition plate 2 are inclined.

[0040] Cover plate 3 is located above connecting pipe 104. The surface of cover plate 3 has six connecting holes in a ring. Cover plate 3 is connected to connecting pipe 104 by bolts. Fixing block 302 is installed on the upper end face of cover plate 3.

[0041] Adjusting block 4 is located above fixed block 302. Two sets of connecting plates 401 are symmetrically installed on the outer end face of adjusting block 4. The lower end face of connecting plate 401 is fixedly connected to fixed block 302.

[0042] Handwheel 5, with an adjusting rod 501 fixedly installed at the middle of the lower end face of handwheel 5. The upper part of the adjusting rod 501 has a thread on its outer end face, and a stopper plate 6 is fixedly installed on the lower end face of the adjusting rod 501. When conveying high-temperature medium, the high-temperature medium will contact the upper and lower end faces of the stopper plate 6, avoiding contact between the rubber stopper 601 at the outer end of the stopper plate 6 and the medium. This ensures the physical properties of the rubber stopper 601 and prevents hot oil leakage.

[0043] The partition plate 2 has a through hole in the middle of its surface. The inner diameter of the through hole is the same as the outer diameter of the plug plate 6. Two second grooves 202 are formed on the inner end surface of the through hole. A second retaining ring 201 is fixedly installed at the upper part of the inside of the through hole. A first retaining ring 1022 is fixedly installed at the lower part of the inside of the first liquid outlet pipe 102. Two first grooves 1021 are formed on the inner end surface of the first liquid outlet pipe 102. Two rubber plugs 601 are installed on the outer end face of the plug plate 6. The outer end face of the rubber plugs 601 has an arc-shaped structure. When the plug plate 6 is engaged in the through hole on the surface of the partition plate 2, the rubber plugs 601 are engaged in the second grooves 202 on the surface of the through hole. When the plug plate 6 is engaged in the first liquid outlet pipe 102, the rubber plugs 601 are engaged in the first grooves 1021, which can improve the sealing performance.

[0044] The adjusting block 4 has a threaded hole inside, and the adjusting block 4 is threadedly connected to the adjusting rod 501. In use, rotating the handwheel 5 can drive the stop plate 6 to move up and down, thereby switching the flow direction of the medium or cutting off the flow.

[0045] Among them, resistance strips 105 are evenly installed on the outer end faces of the left and right ends of the valve body 1. The outer end face of the resistance strip 105 is an arc-shaped structure, which can increase the friction during pipeline installation and facilitate the installation work of workers.

[0046] The cover plate 3 has a plug 301 installed on its lower end face. The plug 301 is snapped into the inside of the connecting pipe 104. The surfaces of the cover plate 3, the plug 301, and the fixing block 302 are provided with through holes. The adjusting rod 501 is slidably snapped into the through holes inside the cover plate 3, the plug 301, and the fixing block 302. In use, the plug 301 at the lower end of the cover plate 3 is snapped into the inside of the connecting pipe 104 and tightened with bolts to prevent the medium from overflowing from the upper end of the valve body 1. When the adjusting rod 501 passes through the through holes of the cover plate 3, the plug 301, and the fixing block 302, the possibility of fluid seepage is reduced.

[0047] The working principle of this embodiment is as follows: The inlet pipe 101 on the left side of the valve body 1 is the medium inlet, and the first outlet pipe 102 at the lower middle of the valve body 1 and the second outlet pipe 103 on the right side are the outlets. The partition plate 2 divides the interior of the valve body 1 into upper and lower flow channels. The inclined structure at both ends of the partition plate 2 helps to divert the liquid. The through hole in the middle horizontal section cooperates with the plug plate 6 to realize the opening and closing control of the flow channel. The adjusting rod 501 is threadedly connected to the adjusting block 4. Turning the handwheel 5 can drive the plug plate 6 to move up and down, thereby switching the medium flow direction or cutting off the flow. When the liquid needs to be discharged from the first outlet pipe 102, turning the handwheel 5 can make the plug plate 6 engage in the through hole on the surface of the partition plate 2, preventing the liquid from flowing upwards from the valve body 1. The flow path is controlled by a second retaining ring 201 fixedly installed at the upper end of the through hole. The second retaining ring 201 can limit the position of the plug plate 6. At this time, the rubber plug 601 at the outer end of the plug plate 6 is engaged in the second groove 202 on the inner wall of the through hole, which can improve the sealing performance. At this time, the liquid entering the valve body 1 from the inlet pipe 101 can only be discharged from the first outlet pipe 102. When the liquid needs to be discharged from the second outlet pipe 103, the handwheel 5 is rotated. Through the threaded connection between the adjusting rod 501 and the adjusting block 4, the adjusting rod 501 drives the plug plate 6 to move downward. When the plug plate 6 is engaged inside the first outlet pipe 102, the plug plate 6 can block the first outlet pipe 102. The first retaining ring is installed inside the first outlet pipe 102. 1022 can limit the position of the stopper plate 6. Two first grooves 1021 are formed on the inner surface of the first outlet pipe 102. When the stopper plate 6 is inserted into the first outlet pipe 102, the rubber stopper 601 at the outer end of the stopper plate 6 will engage in the first groove 1021, thereby improving the sealing performance of the stopper plate 6 on the first outlet pipe 102. At this time, liquid will enter the upper part of the valve body 1 through the through hole on the surface of the partition plate 2 and exit from the second outlet pipe 103. The threaded connection between the adjusting block 4 and the adjusting rod 501 has a self-locking characteristic. After the handwheel 5 is rotated to the correct position, the thread friction can prevent the adjusting rod 501 from loosening due to medium pressure or vibration, ensuring the stability of the stopper plate 6 and avoiding leakage caused by displacement of the sealing surface. The cover plate 3... The lower plug 301 is snapped into the connecting pipe 104 and tightened with bolts to prevent the medium from overflowing from the upper end of the valve body 1. When the adjusting rod 501 passes through the through holes of the cover plate 3, plug 301, and fixing block 302, it reduces the possibility of fluid seepage. The inclined structure at both ends of the partition plate 2 guides the medium to flow evenly to the liquid outlet pipes on both sides, avoiding turbulent pressure caused by uneven flow velocity and reducing the impact on the sealing surface. The resistance strips 105 at both ends of the valve body 1 are arc-shaped, which can increase the friction during pipeline installation and facilitate the installation work of workers. When conveying high-temperature medium, the high-temperature medium will contact the upper and lower end faces of the plug plate 6, avoiding the contact between the rubber plug 601 at the outer end of the plug plate 6 and the medium. This ensures the physical properties of the rubber plug 601 and prevents hot oil leakage.

Claims

1. A leak-proof three-way valve, comprising: a valve body (1), the middle part of the valve body (1) being a barrel structure, the left and right ends of the valve body (1) being circular truncated cone structures, a liquid inlet pipe (101) being fixedly installed at the left end of the valve body (1), a second liquid outlet pipe (103) being fixedly installed at the right end of the valve body (1), a first liquid outlet pipe (102) being fixedly installed at the lower end face of the middle part of the valve body (1), and a connecting pipe (104) being fixedly installed at the upper end face of the middle part of the valve body (1); characterized in that, The utility model provides a valve body (1), the valve body (1) is fixedly installed in the inside of valve body (1), and the middle position of partition plate (2) is horizontal structure, and both ends of partition plate (2) are inclined structure, the cover plate (3) is located the position above the connecting pipe (104), and the surface of cover plate (3) is annular and is provided with six connecting holes, and the cover plate (3) is connected with the connecting pipe (104) through bolt, and the upper end surface of cover plate (3) is installed with fixed block (302), the adjusting block (4) is located the position above fixed block (302), and the outer end surface of adjusting block (4) is symmetrically installed with two groups of connecting plates (401), and the lower end surface of connecting plate (401) is fixedly connected with fixed block (302), the hand wheel (5) is fixedly installed with adjusting rod (501) in the middle position of lower end surface, and the outer end surface of the upper end portion of adjusting rod (501) is provided with screw thread, and the lower end surface of adjusting rod (501) is fixedly installed with plug plate (6).

2. A leak-proof tee valve according to claim 1, wherein The surface of the partition plate (2) is provided with a through hole in the middle position, the inner diameter of the through hole is the same as the outer diameter of the plug plate (6), the inner end surface of the through hole is provided with two second grooves (202), and the second blocking ring (201) is fixedly installed inside the upper position of the through hole.

3. The leakproof tee valve of claim 1, wherein, The first liquid outlet pipe (102) is fixedly installed with a first blocking ring (1022) in the lower position inside, and the inner end surface of the first liquid outlet pipe (102) is provided with two first grooves (1021).

4. The leakproof tee valve of claim 1, wherein, The outer end surface of the plug plate (6) is provided with two rubber plugs (601), and the outer end surface of the rubber plug (601) is in arc structure.

5. The leakproof tee valve of claim 1, wherein, The inside of the adjusting block (4) is provided with a threaded hole, and the adjusting block (4) is threadedly connected with the adjusting rod (501).

6. The leakproof tee valve of claim 1, wherein, The outer end surface of the rubber plug (601) is in arc structure.

7. The leakproof tee valve of claim 1, wherein, The lower end surface of the cover plate (3) is provided with a plug block (301), and the plug block (301) is clamped inside the connecting pipe (104), the surface of the cover plate (3), the plug block (301) and the fixed block (302) is provided with a through hole, and the adjusting rod (501) is slidably clamped in the through hole inside the cover plate (3), the plug block (301) and the fixed block (302).

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