A tee valve

Abstract

The application discloses a tee sampling valve and relates to the technical field of sampling valves.The application comprises a valve body, the periphery of the valve body is respectively provided with a first flow channel, a second flow channel, a third flow channel and a fourth flow channel, one end of the fourth flow channel is threadedly connected with a connecting head, the other end of the connecting head is threadedly connected with a sampling piece, the sampling piece is a pressure relief joint for medium pressure relief or a sampling pipe joint for sampling, the bottom of the first flow channel is fixedly connected with a recovery pipe, one side of the recovery pipe is fixedly connected with an extension pipe, in the application, the threaded sleeve ring and the threaded sleeve are used in cooperation, so that when the product is not used, the threaded ring can be rotated into the threaded sleeve by rotating the handle, the sliding rod and the piston are fixed, the extension pipe is blocked by the piston, the oil leakage phenomenon is prevented, the air can be discharged by manual operation, the air is prevented from entering the oil pump, the oil pump is prevented from being damaged, and the service life of the oil pump is prolonged.

Description

Technical Field

[0001] This invention belongs to the field of sampling valve technology, and in particular relates to a three-way sampling valve. Background Technology

[0002] In oil pipelines, or in the feed oil storage system of oil-to-hydrogen units in oil refining and high-end synthetic new materials projects, it is necessary to regularly sample and test the oil to ensure its quality and prevent problems. In particular, if the oil is contaminated during the filling of storage tanks, the entire tank can be easily polluted. However, most existing sampling methods use top-of-tank sampling valves or valve sampling, which are prone to danger due to their location. Therefore, a three-way sampling valve is proposed. Summary of the Invention

[0003] The purpose of this invention is to provide a three-way sampling valve that uses a threaded ring and a threaded sleeve in combination. When the product is not in use, the threaded ring can be screwed into the threaded sleeve by turning the handle, thereby fixing the slide rod and piston. The piston also seals the extension tube to prevent oil leakage. Furthermore, air can be manually discharged to prevent air from entering the downstream oil pump, thus preventing pump damage and extending the service life of the oil pump. This invention solves the existing technical problems.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0005] A three-way sampling valve, comprising:

[0006] The valve body has a first flow channel, a second flow channel, a third flow channel and a fourth flow channel respectively around its perimeter. One end of the fourth flow channel is threaded to a connector, and the other end of the connector is threaded to a sampling element. The sampling element is a pressure relief connector for media pressure relief or a sampling tube connector for sampling.

[0007] The bottom of the first flow channel is fixedly connected to a recovery pipe, one side of the recovery pipe is fixedly connected to an extension pipe, the other end of the extension pipe is vertically upward and is circumferentially fitted with a connecting sleeve, the bottom of the connector is fixedly connected to a pressure discharge pipe, and the outer circumferential wall of the pressure discharge pipe is provided with threads that cooperate with the connecting sleeve.

[0008] Furthermore, a fixing frame is fixedly connected to the inner circumference of the recovery pipe, a retaining ring is fixedly connected to one side of the fixing frame, and a through mounting rod is slidably connected to one side of the fixing frame. A sealing cone that cooperates with the retaining ring is fixedly connected to one end of the mounting rod, and a spring is fixedly connected between the other end of the mounting rod and the fixing frame. A through sliding rod is inserted into one end of the recovery pipe, and a piston is slidably connected inside the recovery pipe. The piston is fixed to one end of the sliding rod. By installing an extension pipe and a recovery pipe between the fourth flow channel and the first flow channel, when sampling oil in the tanker, the oil can be manually injected into the first flow channel, avoiding the discharge of oil during sampling, improving the cleanliness of the oil, and avoiding manual subsequent oil processing operations, thus improving the environmental quality at the site.

[0009] Furthermore, a handle is rotatably connected to the other end of the slide rod, and a threaded ring is fixedly connected to one side of the handle. A threaded sleeve that mates with the threaded ring is fixedly connected to one end of the recovery tube. The threaded sleeve and the threaded ring work together to fix the position of the slide rod and the piston, thereby improving the safety of use.

[0010] Furthermore, an exhaust pipe is fixedly connected to the top of the recovery pipe, and a float is movably connected inside the exhaust pipe. A limit ring is fixedly connected to the inner circumference of the exhaust pipe, and each limit ring has a through-hole in the middle. The bottom of the upper limit ring has a groove for cooperating with the float. A sealing exhaust head is threaded to the top of the exhaust pipe. By installing an exhaust pipe around the circumference of the recovery pipe, the air flowing in during sampling can enter the exhaust pipe and then be manually discharged, preventing air from entering the subsequent oil pump, thus preventing damage to the oil pump and improving its service life.

[0011] Furthermore, a valve core is rotatably connected to the valve body, and a valve stem is fixedly connected to the top of the valve core. The valve core is a three-way valve.

[0012] Furthermore, the top of the valve stem rotates through the valve body and is fixedly connected to a handwheel.

[0013] Furthermore, a sealing gasket for sealing the valve core is installed inside the valve body, and a disc spring for abutting the sealing gasket is provided on one side of the sealing gasket.

[0014] Furthermore, a plug is threadedly connected to one end of the third flow channel.

[0015] In this invention, the first flow channel is connected to the inlet end of the oil storage tank. During feeding, the valve core side outlet of the three-way valve is rotated to the third flow channel. The second flow channel is connected to the tank truck, thereby adding oil to the oil storage tank. When sampling into the tank truck, the connecting sleeve is threaded to the pressure relief pipe. Then, the valve core is rotated by the valve stem to connect the second and fourth flow channels. The pressure relief connector is loosened, and then the handle is rotated to separate the threaded ring and the threaded sleeve. The piston is then pulled out by the handle. At this time, the oil in the fourth flow channel enters the recovery pipe along the extension pipe. Then, the piston is pushed to inject the oil into the first pipe. After entering the recovery pipe, the oil is squeezed and thus seals the pipe. The cone opens, allowing oil to enter the first flow channel. This process is repeated to drain the oil remaining in the fourth pipe. After drainage, the piston is reset, and then the valve core is reset. The piston is then operated in the same way again to drain the remaining oil and pressure in the fourth flow channel. The pressure relief connector is then removed and replaced with a sampling pipe connector. The valve core is opened again to sample the oil in the tanker. After sampling, the valve core and pressure relief connector are reset. When there are air bubbles in the recovery pipe, the air bubbles enter the threaded ring, the float descends, pushes the piston, compresses the air in the exhaust pipe, and then the exhaust head is opened to discharge the air. The float is then lifted by the oil and cooperates with the upper limit ring to seal the oil.

[0016] When taking samples from the oil storage tank, the first and fourth flow channels are connected by controlling the valve core. Then, the pressure relief connector is rotated to allow the pressure relief pipe to leak out and discharge the remaining oil in the fourth flow channel. After discharge, the valve core is reset, pressure is released, and the sampling tube is replaced to complete the sampling.

[0017] The embodiments of the present invention have the following beneficial effects:

[0018] In this invention, by installing an extension pipe and a recovery pipe between the fourth flow channel and the first flow channel, when sampling oil in the tanker, the oil can be manually injected into the first flow channel, avoiding the discharge of oil during sampling, improving the cleanliness of the oil, and avoiding manual subsequent oil processing operations, thus improving the environmental quality at the site.

[0019] In this invention, by installing an exhaust pipe around the circumference of the recovery pipe, the air flowing in during the sampling process can enter the exhaust pipe and then be manually discharged, thus preventing air from entering the subsequent oil pump, preventing damage to the oil pump, and improving the service life of the oil pump.

[0020] In this invention, by using a threaded ring and a threaded sleeve together, when the product is not in use, the threaded ring can be screwed into the threaded sleeve by turning the handle, thereby fixing the slide rod and piston. The piston also seals the extension tube to prevent oil leakage. Furthermore, air can be manually expelled, preventing air from entering the subsequent oil pump, thus preventing pump damage and extending the service life of the oil pump.

[0021] In this invention, oil is manually injected into the first flow channel, which avoids the oil being discharged during sampling, improves the cleanliness of the oil, and avoids the need for subsequent manual oil processing, thereby improving the environmental quality at the site.

[0022] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the pressure relief connector installation structure according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the sampling connector installation structure according to an embodiment of the present invention;

[0026] Figure 3 This is a cross-sectional structural diagram of an embodiment of the present invention;

[0027] Figure 4 This is a cross-sectional view of an embodiment of the present invention.

[0028] Figure 5 This is a schematic cross-sectional view of a recovery pipe according to an embodiment of the present invention;

[0029] Figure 6 This is an embodiment of the present invention. Figure 5 A magnified structural diagram of point A in the middle.

[0030] In the diagram: 1. Valve body; 2. First flow channel; 3. Second flow channel; 4. Third flow channel; 5. Fourth flow channel; 6. Plug; 7. Connector; 8. Sampling component; 81. Pressure relief connector; 82. Sampling tube connector; 9. Valve core; 10. Valve stem; 11. Sealing gasket; 12. Disc spring; 13. Recovery tube; 14. Piston; 15. Slide rod; 16. Handle; 17. Threaded ring; 18. Threaded sleeve; 19. Extension tube; 20. Connecting sleeve; 21. Pressure relief tube; 22. Fixing bracket; 23. Retaining ring; 24. Mounting rod; 25. Sealing cone; 26. Spring; 27. Exhaust pipe; 28. Float; 29. ​​Limiting ring; 30. Air hole; 31. Exhaust head. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] In the description of this invention, it should be understood that the terms "opening", "upper", "middle", "length", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0033] To keep the following description of the embodiments of the present invention clear and concise, detailed descriptions of known functions and known components are omitted.

[0034] Example 1

[0035] Please see Figures 1-6 As shown, this embodiment provides a three-way sampling valve, including: a valve body 1, with a first flow channel 2, a second flow channel 3, a third flow channel 4 and a fourth flow channel 5 respectively provided around the valve body 1, a connector 7 threadedly connected to one end of the fourth flow channel 5, and a sampling element 8 threadedly connected to the other end of the connector 7, the sampling element 8 being a pressure relief connector 81 for media pressure relief or a sampling tube connector 82 for sampling, the pressure relief connector 81 is used to relieve pressure before sampling, and the sampling tube connector 82 is used to sample after sampling;

[0036] The bottom of the first flow channel 2 is fixedly connected to a recovery pipe 13. One side of the recovery pipe 13 is fixedly connected to an extension pipe 19. The other end of the extension pipe 19 is vertically upward and is circumferentially fitted with a connecting sleeve 20. The bottom of the connector 7 is fixedly connected to a pressure relief pipe 21. The outer circumference of the pressure relief pipe 21 is provided with threads that cooperate with the connecting sleeve 20. When sampling into the tanker, the connecting sleeve 20 is threadedly connected to the pressure relief pipe 21, so that the mixed oil in the fourth flow channel can be discharged during depressurization, avoiding discharge to the site.

[0037] Reference Figure 5 and Figure 6A fixing frame 22 is fixedly connected to the inner circumference of the recovery pipe 13. A retaining ring 23 is fixedly connected to one side of the fixing frame 22. A through mounting rod 24 is slidably connected to one side of the fixing frame 22. A sealing cone 25 that cooperates with the retaining ring 23 is fixedly connected to one end of the mounting rod 24. A spring 26 is fixedly connected between the other end of the mounting rod 24 and the fixing frame 22. A through sliding rod 15 is inserted into one end of the recovery pipe 13. A piston 14 is slidably connected inside the recovery pipe 13. The piston 14 is fixed to one end of the sliding rod 15. The piston 14 is pulled out by the handle 16. At this time, the oil in the fourth flow channel 5 enters the recovery pipe 13 along the extension pipe 19. Then, the piston 14 is pushed to inject the oil into the first flow channel 2. After the oil enters the recovery pipe 13, it is squeezed and pushes open the sealing cone 25, so that the oil enters the first flow channel 2. This process is repeated to discharge the oil remaining in the fourth pipe 5.

[0038] Example 2

[0039] Improvements based on Example 1: See Appendix Figures 1-6 ,

[0040] In this invention, reference is made to Figure 5 The other end of the slide rod 15 is rotatably connected to a handle 16. A threaded ring 17 is fixedly connected to one side of the handle 16. One end of the recovery tube 13 is fixedly connected to a threaded sleeve 18 that works with the threaded ring 17. The threaded ring 17 is screwed into the threaded sleeve 18, thereby fixing the slide rod 15 and the piston 14. The piston 14 then seals the extension tube 19 to prevent oil leakage.

[0041] Reference Figure 5 and Figure 6 The top of the recovery pipe 13 is fixedly connected to an exhaust pipe 27. A float 28 is movably connected inside the exhaust pipe 27. A limit ring 29 is fixedly connected to the inner circumference of the exhaust pipe 27. Each limit ring 29 has a through-hole 30 in the middle. The bottom of the upper limit ring 29 has a groove for cooperating with the float 28. The top of the exhaust pipe 27 is threadedly connected to a sealing exhaust head 31. When air bubbles enter the threaded ring 17, the float 28 descends, pushing the piston 14. The air in the exhaust pipe 27 is compressed, and then the exhaust head 31 is opened, and the air is discharged. The float 28 is then lifted by the oil and cooperates with the upper limit ring 29 to seal the oil, preventing air from entering the subsequent oil pump, preventing damage to the oil pump, and improving the service life of the oil pump.

[0042] Reference Figure 3 A valve core 9 is rotatably connected inside the valve body 1. A valve stem 10 is fixedly connected to the top of the valve core 9. The valve core 9 is a three-way valve. A handwheel is fixedly connected to the top of the valve stem 10 through the valve body 1.

[0043] Reference Figure 4The valve body 1 is equipped with a sealing gasket 11 for sealing the valve core 9. A disc spring 12 is provided on one side of the sealing gasket 11 to abut against the sealing gasket 11. The sealing gasket 11 seals the valve core 9. A plug 6 is threaded to one end of the third flow channel 4 to block the third flow channel 4.

[0044] It should be noted that in the description of this specification, descriptions such as "first" and "second" are only used to distinguish the features and do not have any actual order or directional meaning. This application is not limited to this.

[0045] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0046] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A three-way sampling valve, characterized in that, include: The valve body (1) is provided with a first flow channel (2), a second flow channel (3), a third flow channel (4) and a fourth flow channel (5) around its perimeter. One end of the fourth flow channel (5) is threadedly connected to a connector (7), and the other end of the connector (7) is threadedly connected to a sampling component (8). The sampling component (8) is a pressure relief connector (81) for media pressure relief or a sampling tube connector (82) for sampling. The bottom of the first flow channel (2) is fixedly connected to a recovery pipe (13), one side of the recovery pipe (13) is fixedly connected to an extension pipe (19), the other end of the extension pipe (19) is vertically upward and is circumferentially fitted with a connecting sleeve (20), the bottom of the connector (7) is fixedly connected to a pressure discharge pipe (21), and the outer circumferential wall of the pressure discharge pipe (21) is provided with a thread that cooperates with the connecting sleeve (20); A fixing frame (22) is fixedly connected to the inner circumference of the recycling tube (13). A retaining ring (23) is fixedly connected to one side of the fixing frame (22). A through mounting rod (24) is slidably connected to one side of the fixing frame (22). A sealing cone (25) that cooperates with the retaining ring (23) is fixedly connected to one end of the mounting rod (24). A spring (26) is fixedly connected between the other end of the mounting rod (24) and the fixing frame (22). A through sliding rod (15) is inserted into one end of the recycling tube (13). A piston (14) is slidably connected inside the recycling tube (13). The piston (14) is fixed to one end of the sliding rod (15).

2. A three-way sampling valve as described in claim 1, characterized in that, The other end of the slide bar (15) is rotatably connected to a handle (16), and a threaded ring (17) is fixedly connected to one side of the handle (16). One end of the recycling tube (13) is fixedly connected to a threaded sleeve (18) that works with the threaded ring (17).

3. A three-way sampling valve as described in claim 2, characterized in that, The top of the recovery pipe (13) is fixedly connected to an exhaust pipe (27), and a float (28) is movably connected inside the exhaust pipe (27). A limit ring (29) is fixedly connected to the inner circumference of the exhaust pipe (27). A through air hole (30) is opened in the middle of the limit ring (29). The bottom of the upper limit ring (29) is provided with a groove for cooperating with the float (28). The top of the exhaust pipe (27) is threadedly connected to an exhaust head (31) for sealing.

4. A three-way sampling valve as described in any one of claims 1-3, characterized in that, A valve core (9) is rotatably connected inside the valve body (1), and a valve stem (10) is fixedly connected to the top of the valve core (9). The valve core (9) is a three-way valve.

5. A three-way sampling valve as described in claim 4, characterized in that, The top of the valve stem (10) rotates through the valve body (1) and is fixedly connected to a handwheel.

6. A three-way sampling valve as described in claim 4, characterized in that, The valve body (1) is equipped with a sealing gasket (11) for sealing the valve core (9), and a disc spring (12) for abutting the sealing gasket (11) is provided on one side of the sealing gasket (11).

7. A three-way sampling valve as described in claim 1, characterized in that, One end of the third flow channel (4) is threaded with a plug (6).

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