Special fluid valve structure

Abstract

The utility model discloses a special fluid valve structure, and belongs to the field of container parts. A special fluid valve structure comprises a valve used for being connected with a pressure container, a connecting sleeve is fixedly installed on the pressure container, a filling guide pipe is arranged on the connecting sleeve in a penetrating mode, the valve is connected to the filling guide pipe, the filling guide pipe is connected to the connecting sleeve in a damping sliding mode, comb tooth type protrusions are arranged on the inner wall of the connecting sleeve, and the comb tooth type protrusions are arranged on the inner wall of the connecting sleeve. And a gap is reserved between the comb tooth type bulge and the filling catheter. The pressure container has the advantage that the sealing performance between the filling guide pipe and the pressure container is improved.

Description

Technical Field

[0001] This application relates to the field of container components, and in particular to a special fluid valve structure. Background Technology

[0002] Specialty fluids can be used to clean precision parts, as well as as insulating fluids, coolants, and aerosol solvents, such as hydrofluoroolefin fluids, near-azeotropic mixtures containing fluorinated liquids, and so on.

[0003] Special fluids typically contain multiple components, meaning they are mixtures of various fluids. This mixing process must take place within a pressure vessel, which is connected to a filling conduit through which different fluids are introduced. To facilitate the introduction of fluids into the pressure vessel, the filling conduit can be designed to be movable, thereby allowing for appropriate adjustments to the depth to which the filling conduit enters the pressure vessel.

[0004] However, the movable design of the filling conduit creates a large gap between the pressure vessel and the filling conduit, allowing the special gaseous fluid to easily leak out through the gap, affecting the sealing performance. Utility Model Content

[0005] To improve the sealing between the filling conduit and the pressure vessel, this application provides a special fluid valve structure.

[0006] The special fluid valve structure provided in this application adopts the following technical solution:

[0007] A special fluid valve structure includes a valve for connection to a pressure vessel, the pressure vessel having a fixedly installed connecting sleeve, the connecting sleeve having a filling conduit, the valve being connected to the filling conduit, the filling conduit being damped and slidably connected to the connecting sleeve, the inner wall of the connecting sleeve having comb-like protrusions, and a gap being left between the comb-like protrusions and the filling conduit.

[0008] By adopting the above technical solution, the filling conduit is damped and slidably connected to the connecting sleeve, which allows the filling conduit to move while sealing the gaps in the filling conduit. At the same time, the inner wall of the connecting sleeve is provided with comb-shaped protrusions to form multiple interception gaps and expansion cavities, which restrict the outward diffusion and flow of the gaseous special fluid, forming a labyrinth seal. Thus, while the filling conduit can move, the sealing performance between the filling conduit and the pressure vessel is improved, and leakage is reduced.

[0009] Optionally, the comb-shaped protrusion includes multiple straight teeth, multiple first oblique teeth, and multiple second oblique teeth. The straight teeth are fixedly connected to the inner wall of the connecting sleeve and distributed along the airflow direction. The first oblique teeth and the second oblique teeth are alternately fixedly connected to adjacent straight teeth and located at the ends of the straight teeth. There is a gap between the first oblique teeth and the second oblique teeth and the filling conduit. The first oblique teeth and the second oblique teeth have opposite inclination directions.

[0010] By adopting the above technical solution, an expansion cavity is formed between adjacent straight teeth. In addition to forming a flow-blocking gap with the filling conduit, the first and second helical teeth also guide the airflow, promote the generation of vortices, and cause the kinetic energy of the airflow to be converted into heat energy, further hindering the outward leakage of the airflow.

[0011] Optionally, the inclination angle of both the first helical tooth and the second helical tooth is 120~130°.

[0012] By adopting the above technical solution, the tilt angle helps to guide the airflow.

[0013] Optionally, the distance between the end of the first helical tooth and the end of the second helical tooth and the end of the straight tooth is 25-40% of the distance between the end of the straight tooth and the inner wall of the connecting sleeve.

[0014] By adopting the above technical solution, the above distance can balance the influence of the interception gap and the expansion cavity on the airflow, and improve the throttling effect on gaseous special fluids.

[0015] Optionally, a third helical tooth is fixedly connected to the inclined surface of the first helical tooth away from the straight tooth, and a fourth helical tooth is fixedly connected to the inclined surface of the second helical tooth away from the straight tooth, wherein the inclination direction of the third helical tooth is opposite to that of the fourth helical tooth.

[0016] By adopting the above technical solution, adding the third and fourth helical teeth can increase the friction against the special gaseous fluid, further reduce the kinetic energy of the airflow, and hinder the leakage of the airflow.

[0017] Optionally, the inclination angles of the third and fourth helical teeth are both 160-170°.

[0018] By adopting the above technical solution, the tilt angle helps to guide the airflow.

[0019] Optionally, the distance between the end of the third helical tooth and the end of the straight tooth is the same as the distance between the end of the first helical tooth and the end of the straight tooth.

[0020] By adopting the above technical solution, the above distance can balance the influence of the interception gap and the expansion cavity on the airflow, and improve the throttling effect on gaseous special fluids.

[0021] Optionally, the valve may be equipped with a one-way valve core.

[0022] By adopting the above technical solution, the one-way valve core can allow special fluids to enter the filling conduit and prevent the special fluids from leaking out of the filling conduit.

[0023] In summary, this application has the following beneficial effects:

[0024] 1. The filling conduit is damped and slidably connected to the connecting sleeve, which allows the filling conduit to move while sealing the gaps in the filling conduit. At the same time, the inner wall of the connecting sleeve is provided with comb-shaped protrusions to form multiple interception gaps and expansion cavities, which restrict the outward diffusion and flow of the special gaseous fluid, forming a labyrinth seal. Thus, while the filling conduit can move, the sealing performance between the filling conduit and the pressure vessel is improved, and leakage is reduced.

[0025] 2. An expansion cavity is formed between adjacent straight teeth. In addition to forming a flow-blocking gap with the filling conduit, the first and second helical teeth also guide the airflow, promote the generation of vortices, and cause the kinetic energy of the airflow to be converted into heat energy, further hindering the outward leakage of the airflow. Attached Figure Description

[0026] Figure 1 This is a cross-sectional structural diagram of Embodiment 1 of this application.

[0027] Figure 2 yes Figure 1 A magnified view of part A in the image.

[0028] Figure 3 This is a structural diagram of the filling catheter and connecting sleeve in Embodiment 1 of this application.

[0029] Figure 4 This is a structural diagram of the filling catheter and connecting sleeve in Embodiment 2 of this application.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Pressure vessel; 2. Valve; 21. Narrowing ring; 22. Sealing block; 23. Limiting ring; 24. Support ring; 25. Spring; 26. Through hole; 3. Filling conduit; 4. Connecting sleeve; 5. Straight tooth; 51. First helical tooth; 52. Second helical tooth; 53. Third helical tooth; 54. Fourth helical tooth. Detailed Implementation

[0032] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0033] Example 1

[0034] Embodiment 1 of this application discloses a special fluid valve structure. For example... Figure 1 As shown, a special fluid valve structure includes a valve 2 for connection to a pressure vessel 1. A connecting sleeve 4 is fixedly installed on the top of the pressure vessel 1. A filling conduit 3 passes through the connecting sleeve 4. The valve 2 is connected to the filling conduit 3. The valve 2 can control the communication between the filling conduit 3 and the outside. When the valve 2 is opened, the special fluid can enter the filling conduit 3 and then enter the interior of the pressure vessel 1.

[0035] like Figure 1 and Figure 2 As shown, valve 2 has a one-way valve core inside. The one-way valve core includes a constriction ring 21, a sealing block 22, a limiting ring 23, and a support ring 24. The constriction ring 21, sealing block 22, and support ring 24 are all disposed in the internal channel of valve 2. The constriction ring 21 and support ring 24 are fixedly connected to the side wall of the channel. The limiting ring 23 is slidably connected to the support ring 24. The limiting ring 23 has a through hole 26 for fluid to enter. The limiting ring 23 is fixedly connected to the sealing block 22, and the support ring 24 is slidably connected to the sealing block 22. A spring 25 is connected between the sealing blocks 22. Under the elastic force of the spring 25, the sealing blocks 22 block the constriction ring 21. When the fluid outside the valve 2 enters the valve 2 passage, the fluid pressure forces the spring 25 to compress, thereby leaving a space for the fluid to pass through between the constriction ring 21 and the sealing blocks 22. After the fluid no longer enters the valve 2, the spring 25 returns to its original position, causing the sealing blocks 22 to block the constriction ring 21, thereby preventing the fluid from leaving the valve 2 from the internal passage, preventing the fluid from flowing back, and improving safety.

[0036] The filling conduit 3 is damped and slidably connected to the connecting sleeve 4. This can be achieved by a small gap between the two or by using a flexible material to make the connecting sleeve 4, so that the filling conduit 3 is movable to adjust its position in the pressure vessel 1. At the same time, the frictional damping between the filling conduit 3 and the connecting sleeve 4 is large, making it difficult to move the filling conduit 3 under small external forces, thus improving the stability of the filling conduit 3 during use.

[0037] like Figure 1 and Figure 3 As shown, the inner wall of the connecting sleeve 4 is provided with comb-shaped protrusions, and a gap is left between the comb-shaped protrusions and the filling conduit 3. The comb-shaped protrusions include multiple straight teeth 5, multiple first oblique teeth 51, and multiple second oblique teeth 52. The straight teeth 5 are fixedly connected to the inner wall of the connecting sleeve 4, and the straight teeth 5 are distributed along the airflow direction. The first oblique teeth 51 and the second oblique teeth 52 are alternately fixedly connected to adjacent straight teeth 5, that is, if the previous straight tooth 5 is connected to the first oblique tooth 51, then the next straight tooth 5 is connected to the second oblique tooth 52. The first oblique teeth 51 and the second oblique teeth 52 are both located at the end of the straight teeth 5. The end of the straight tooth 5 refers to the end of the straight tooth 5 away from the connecting sleeve 4. A gap is left between the first oblique teeth 51 and the second oblique teeth 52 and the filling conduit 3.

[0038] An expansion cavity is formed between adjacent straight teeth 5, and a flow-blocking gap is formed between the first helical tooth 51 and the second helical tooth 52 filling conduit 3, which restricts the outward diffusion and flow of the gaseous special fluid, forming a labyrinth seal, improving the sealing performance between the filling conduit 3 and the pressure vessel 1, and also guiding the airflow, promoting the generation of vortices, causing the kinetic energy of the airflow to be converted into heat energy, further hindering the outward leakage of the airflow.

[0039] The first helical tooth 51 and the second helical tooth 52 have opposite inclination directions. The inclination angles of the first helical tooth 51 and the second helical tooth 52 are both 120~130°. In this embodiment, it is preferably 130°. The inclination angle refers to the angle between the center line of the helical tooth and the straight line containing the length direction of the straight tooth 5.

[0040] The distance between the ends of the first helical tooth 51 and the second helical tooth 52 and the end of the straight tooth 5 is 25-40% of the distance between the end of the straight tooth 5 and the inner wall of the connecting sleeve 4, preferably 40% in this embodiment. This distance balances the influence of the interception gap and the expansion cavity on the airflow, improving the throttling effect on the gaseous special fluid. The end of the helical tooth refers to the end of the helical tooth furthest from the straight tooth 5.

[0041] The implementation principle of a special fluid valve 2 structure in this application embodiment is as follows:

[0042] When the special gaseous fluid enters between the connecting sleeve 4 and the filling conduit 3, it enters the expansion cavity between the straight teeth 5 under the guidance of the first helical tooth 51 and the second helical tooth 52, which suppresses the tendency of the airflow to continue to leak outward, thereby improving the sealing performance.

[0043] Example 2

[0044] like Figure 4 As shown, the difference between this embodiment and embodiment 1 is that the first helical tooth 51 is fixedly connected to the third helical tooth 53, and the second helical tooth 52 is fixedly connected to the fourth helical tooth 54.

[0045] The third helical tooth 53 is located on the inclined surface of the first helical tooth 51 away from the straight tooth 5, and the fourth helical tooth 54 is located on the inclined surface of the second helical tooth 52 away from the straight tooth 5. The inclination directions of the third helical tooth 53 and the fourth helical tooth 54 are opposite. The inclination angles of the third helical tooth 53 and the fourth helical tooth 54 are both 160~170°. In this embodiment, it is preferably 170°. The inclination angle refers to the angle between the center line of the helical tooth and the straight line containing the length direction of the straight tooth 5.

[0046] The distance between the ends of the third helical tooth 53 and the fourth helical tooth 54 and the end of the straight tooth 5 is the same as the distance between the ends of the first helical tooth 51 and the second helical tooth 52 and the end of the straight tooth 5. Increasing the third helical tooth 53 and the fourth helical tooth 54 can increase the friction against the gaseous special fluid, further reduce the kinetic energy of the airflow, and hinder the leakage of the airflow.

[0047] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this specific embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A special fluid valve structure, characterized in that: Includes a valve (2) for connection to a pressure vessel (1), the pressure vessel (1) is fixedly fitted with a connecting sleeve (4), the connecting sleeve (4) is provided with a filling conduit (3), the valve (2) is connected to the filling conduit (3), the filling conduit (3) is damped and slidably connected to the connecting sleeve (4), the inner wall of the connecting sleeve (4) is provided with a comb-shaped protrusion, and a gap is left between the comb-shaped protrusion and the filling conduit (3).

2. The special fluid valve structure according to claim 1, characterized in that: The comb-shaped protrusion includes multiple straight teeth (5), multiple first oblique teeth (51), and multiple second oblique teeth (52). The straight teeth (5) are fixedly connected to the inner wall of the connecting sleeve (4) and distributed along the airflow direction. The first oblique teeth (51) and the second oblique teeth (52) are alternately fixedly connected to adjacent straight teeth (5) and located at the ends of the straight teeth (5). There is a gap between the first oblique teeth (51) and the second oblique teeth (52) and the filling conduit (3). The first oblique teeth (51) and the second oblique teeth (52) have opposite inclination directions.

3. The special fluid valve structure according to claim 2, characterized in that: The inclination angles of the first helical tooth (51) and the second helical tooth (52) are both 120~130°.

4. The special fluid valve structure according to claim 2, characterized in that: The distance between the end of the first helical tooth (51) and the end of the second helical tooth (52) and the end of the straight tooth (5) is 25-40% of the distance between the end of the straight tooth (5) and the inner wall of the connecting sleeve (4).

5. A special fluid valve structure according to claim 2, characterized in that: The first helical tooth (51) is fixedly connected to the inclined surface of the straight tooth (5) with a third helical tooth (53), and the second helical tooth (52) is fixedly connected to the inclined surface of the straight tooth (5) with a fourth helical tooth (54). The inclination directions of the third helical tooth (53) and the fourth helical tooth (54) are opposite.

6. A special fluid valve structure according to claim 5, characterized in that: The inclination angles of the third helical tooth (53) and the fourth helical tooth (54) are both 160~170°.

7. A special fluid valve structure according to claim 5, characterized in that: The distance between the end of the third helical tooth (53) and the end of the fourth helical tooth (54) and the end of the straight tooth (5) is the same as the distance between the end of the first helical tooth (51) and the end of the second helical tooth (52) and the end of the straight tooth (5).

8. The special fluid valve structure according to claim 1, characterized in that: The valve (2) is equipped with a one-way valve core.

Images