Valve structure facilitating foaming fluid circulation

Abstract

The invention relates to the technical field of fluid control devices, in particular to a valve structure facilitating foaming fluid circulation. The valve comprises a first valve seat, a second valve seat and a valve element rotationally arranged between the first valve seat and the second valve seat, the first valve seat is provided with a sealing body and a reset piece which slide in the fluid direction, the gap between the valve element and the sealing body in the initial state is smaller than 0.7 mm, and the second valve seat is provided with a flow guide cavity and a drainage structure. According to the structure, the residence time of foaming fluid in the valve is effectively shortened by optimizing the flow channel design, the circulation efficiency is improved, meanwhile, good sealing performance is ensured, and the structure is suitable for various fluid media containing a large amount of gas or foam.

Description

Technical Field

[0001] The present application relates to the technical field of fluid delivery, and in particular to a valve structure that facilitates the circulation of foaming fluid. Background Art

[0002] At present, in industrial production, especially in the process of polymer material processing, foaming materials often exist in a fluid state and are transported to various processes through pipelines. In order to ensure the smooth progress of the process, these fluids need to be precisely controlled. However, existing valve designs face many challenges when handling this special fluid. Traditional valves are mostly used to control liquid or gas media. For foaming fluids with expansion characteristics, the existing valve design cannot fully meet the needs.

[0003] The commonly used valves currently include ball valves, butterfly valves, gate valves and other types. Among them, ball valves are widely used in various fluid control systems due to their good sealing performance and fast opening and closing. However, traditional ball valves have obvious shortcomings when dealing with foaming fluids. Specifically, the standard gap between the valve seat and the ball of a ball valve is usually set to 1.2mm. Although this design can meet the requirements of most common fluids, it is not flexible enough for foaming fluids that are easy to expand. Once the foaming material encounters moisture, its volume will increase rapidly, and the maximum thickness after expansion can reach 0.8mm. If this part of the foaming material remains between the ball and the inner cavity of the valve seat, over time, the accumulated foaming objects will gradually occupy the original gap, eventually causing the ball to be unable to rotate normally, thereby damaging the entire valve system.

[0004] In summary, foaming materials will accumulate in the valve body, causing the valve to get stuck or even damaged. These problems not only affect the continuity and stability of production, but also increase the cost of maintenance and replacement. Summary of the invention

[0005] In order to improve the above-mentioned problems, the present application provides a valve structure that facilitates the flow of foaming fluid.

[0006] The present application provides a valve structure that facilitates the flow of foaming fluids and adopts the following technical solutions: A valve structure that facilitates the circulation of foaming fluid, comprises a first valve seat, a second valve seat, and a valve core that rotates between the first valve seat and the second valve seat, wherein the first valve seat is provided with a sealing body that slides along the direction of fluid flow, a reset member is provided between the sealing body and the first valve seat, and in an initial state, a gap between the valve core and the sealing body is set to be less than 0.7 mm, a guide cavity is provided at one end of the second valve seat close to the valve core, and a diversion structure that accelerates the flow of fluid is provided at one end of the guide cavity away from the valve core.

[0007] By adopting the above technical solution, the reset member (spring) between the sealing body and the first valve seat can maintain the gap between the valve core and the sealing body less than 0.7mm in the initial state, thereby avoiding the foaming fluid from blocking the gap between the valve core and the sealing body after expansion; the guide cavity and drainage structure design on the second valve seat can accelerate the fluid flow, reduce the resistance during the flow of the foaming material, and improve the working efficiency of the valve; the sealing body sliding along the fluid flow direction can automatically adjust its position under the action of fluid pressure to ensure a good sealing effect, while avoiding sealing failure caused by the expansion of the foaming fluid; the valve structure can effectively prevent the accumulation of foaming fluid in the valve body and cause sticking.

[0008] Optionally, the first valve seat is connected to the second valve seat via bolts, and the valve core is rotatably connected to the second valve seat.

[0009] By adopting the above technical solution, the first valve seat and the second valve seat are connected by bolts, making the valve structure more stable and reliable, and convenient for disassembly and maintenance. The valve core is rotatably connected to the second valve seat, ensuring the smooth rotation of the valve core and improving the operational flexibility and reliability of the valve.

[0010] Optionally, the sealing body includes a guide block sliding on the first valve seat and a sealing block integrally formed on the guide block, the reset member is arranged between the guide block and the first valve seat, a plurality of mounting grooves are evenly spaced on the side wall of the first valve seat, the reset member is a spring, one end of the spring is fixed in the mounting groove, and the other end is fixed on the guide block, and the distance between the sealing block and the valve core is less than 0.7 mm.

[0011] By adopting the above technical solution, the sealing body can slide along the direction of fluid flow, effectively avoiding the problem of accumulation of foaming fluid between the valve core and the sealing body. The setting of the reset member (spring) enables the sealing body to automatically reset when no force is applied, ensuring the sealing performance when the valve is closed. The one-piece molding design of the guide block and the sealing block improves the stability and reliability of the structure. The setting of the mounting groove facilitates the installation and positioning of the spring, ensuring a smooth resetting process. The small gap design between the sealing block and the valve core effectively prevents the foaming fluid from entering and blocking the space between the valve core and the sealing body, thereby extending the service life of the valve.

[0012] Optionally, a first sealing ring is provided at the connection between the first valve seat and the second valve seat, and when the valve core blocks the flow of fluid, a second sealing ring is provided on the side of the sealing block that is in contact with the sphere, and the second sealing ring is in line contact with the spherical surface of the valve core.

[0013] By adopting the above technical solution, the first sealing ring provided at the connection between the first valve seat and the second valve seat effectively prevents fluid leakage from the connection gap, thereby improving the overall sealing performance of the valve. When the valve core blocks the flow of fluid, the second sealing ring provided on the side of the sealing block that fits the sphere is in line contact with the spherical surface of the valve core, further enhancing the sealing effect, ensuring good sealing performance even in a high-pressure environment, and avoiding leakage problems caused by pressure.

[0014] Optionally, the flow guide cavity is funnel-shaped, and the opening diameter of the flow guide cavity at one end close to the valve core is larger than the diameter of the other end.

[0015] By adopting the above technical solution, the flow guide cavity is funnel-shaped and the opening diameter near one end of the valve core is larger than the diameter of the other end, which can effectively guide the flow direction of the foaming fluid, reduce the retention time of the fluid in the flow guide cavity, and avoid the blockage problem caused by the slow flow of the foaming material. At the same time, this design can also increase the speed of the fluid and improve the working efficiency and reliability of the valve.

[0016] Optionally, the drainage structure includes a drainage channel opened on the valve seat and connected to the guide cavity, and a spiral drainage member arranged on the drainage channel. The spiral drainage member includes a mounting sleeve and a spiral plate integrally formed on the inner wall of the mounting sleeve. The spiral drainage member is detachably connected to the drainage channel.

[0017] By adopting the above technical solution, the drainage structure can effectively guide the fluid into the diversion cavity, and generate a vortex effect through the spiral plate, accelerate the flow of the fluid, and reduce the retention time of the foaming fluid inside the valve. At the same time, the detachable connection method makes the spiral drainage part easy to clean and maintain, thereby improving the overall reliability and service life of the valve.

[0018] Optionally, a mounting hole is provided at the end of the drainage channel away from the valve core, the mounting hole is connected to the inner cavity of the drainage channel and a mounting step is formed on the drainage channel, an annular groove is provided on the mounting step, internal threads are provided on the inner walls on both sides of the annular groove, external threads are provided on the inner wall and outer wall of one end of the mounting sleeve, the mounting sleeve is threadedly connected in the annular groove, and a plurality of sockets are provided on the end surface of the mounting sleeve away from the valve core.

[0019] By adopting the above technical solution, the spiral guide piece can effectively guide the fluid into the guide cavity and accelerate its flow. At the same time, the threaded connection design of the mounting sleeve makes the spiral guide piece easy to disassemble and maintain, and convenient to clean and replace, thereby improving the overall reliability and service life of the valve.

[0020] Optionally, two ventilation pipe openings connected to the guide cavity are provided on the side wall of the second valve seat, one ventilation pipe opening is provided on one side of the valve core, and the other ventilation pipe opening is provided on the other side of the valve core. In the initial state, the ventilation pipe opening is threadedly connected to the end of the ventilation pipe through a pipe cap, so that the ventilation control is in a blocked state.

[0021] By adopting the above technical solution, the setting of the ventilation pipe port makes it possible to inject clean gas or liquid into the guide cavity when the valve is closed, effectively preventing the accumulation and blockage of the foaming fluid in the guide cavity. At the same time, the guide cavity can also be pre-cleaned before the valve is opened, thereby improving the working reliability and service life of the valve.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. The gap between the valve core and the sealing body is set to less than 0.7mm, which can effectively prevent the foaming fluid from getting stuck in the valve core after expansion, avoid the valve getting stuck due to the accumulation of foaming substances, and improve the reliability and service life of the valve; 2. The sealing body slides along the flow direction of the fluid and is equipped with a reset part, which can automatically adjust its position when the foaming fluid passes through, reducing the possibility of foam residue, while ensuring the sealing performance and ensuring the stable operation of the valve under different working conditions; 3. The flow guide cavity and drainage structure design on the second valve seat can accelerate fluid flow, reduce the flow resistance of the foaming material, reduce the risk of foaming material being retained inside the valve, and improve the fluidity and efficiency of the overall system. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 It is a schematic diagram of the overall structure of this application.

[0025] Figure 2 It is a cross-sectional view of the overall structure of this application.

[0026] Figure 3 It is a cross-sectional view of the overall structure in this application, which is mainly used to show the spiral drainage piece after being cut open.

[0027] Figure 4 It is a schematic diagram of the cross-sectional structure of the first valve seat in the present application, which is mainly used to show the sealing body.

[0028] Figure 5It is an axonometric view of the overall structure of the present application, mainly used to show the jack.

[0029] Figure numerals: 1. first valve seat; 2. second valve seat; 3. valve core; 4. sealing body; 5. reset member; 6. guide chamber; 7. drainage structure; 8. guide block; 9. sealing block; 10. mounting groove; 11. first sealing ring; 12. second sealing ring; 13. drainage channel; 14. spiral drainage member; 15. mounting sleeve; 16. spiral plate; 17. mounting hole; 18. annular groove; 19. socket; 20. vent pipe opening. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-5 This application is described in further detail.

[0031] The embodiment of the present application discloses a valve structure that facilitates the flow of foaming fluid, and the present application is further described in detail below.

[0032] Reference Figure 1 A valve structure for facilitating the flow of foaming fluid includes a first valve seat 1 and a second valve seat 2. In this embodiment, the first valve seat 1 is connected to the second valve seat 2 by bolts. In this embodiment, the first valve seat 1 is a liquid inlet end, and the second valve seat 2 is a liquid outlet end. The fluid flows into the inlet of the first valve seat 1 and then flows out from the outlet of the second valve seat 2.

[0033] Reference Figure 2 and 3 The valve structure further includes a valve core 3, which is rotatably connected to the second valve seat 2. In this embodiment, the overall length of the second valve seat 2 is greater than that of the first valve seat 1, and the valve core 3 is located in the valve cavity of the second valve seat 2. Since the circulating fluid is a foaming material fluid, in order to reduce adhesion to the inner cavity side wall of the valve seat, a sealing body 4 that slides along the flow direction of the fluid is provided on the first valve seat 1.

[0034] Reference Figure 3 and 4 In this embodiment, the sealing body 4 is a metal block of the same material as the valve seat. The sealing body 4 includes a guide block 8 and a sealing block 9. A reset member 5 is provided between the sealing body 4 and the first valve seat 1. The reset member 5 is optimally set as a spring in this embodiment. The outer diameter of the guide block 8 is smaller than the outer diameter of the sealing ring. A notch for placing the sealing block 9 is provided at one end of the inner cavity of the first valve seat 1 close to the valve core 3. After the sealing body 4 is installed, the inner diameter of the guide block 8 is equal to the inner diameter of the liquid inlet end of the first valve seat 1. Several mounting grooves 10 are evenly spaced on the first valve seat 1. One end of the spring is fixed to the inner wall of the mounting groove 10, and the other end of the spring is fixedly connected to the guide block 8. The spacing between the sealing block 9 and the valve core 3 is less than 0.7 mm, and in this embodiment, the optimal adjustment setting is 0.6 mm.

[0035] Reference Figure 3 and 4 In order to ensure the sealing of the valve, a first sealing ring 11 is provided at the connection between the first valve seat 1 and the second valve seat 2, so that after the first valve seat 1 and the second valve seat 2 are connected by bolts, the contact surface between the two remains sealed. When the valve core 3 rotates 90 degrees so that the valve core 3 blocks the flow of fluid, a second sealing ring 12 is provided on the side of the sealing block 9 that is in contact with the sphere, so that the second sealing ring 12 is in line contact with the spherical surface of the valve core 3, and the contact gap between the two is less than 0.5mm.

[0036] Reference Figure 2 In order to reduce the adhesion of the fluid to the inner wall of the second valve seat 2, a guide cavity 6 is provided at one end of the second valve seat 2 close to the valve core 3, and a guide structure 7 for accelerating the flow of the fluid is provided at one end of the guide cavity 6 away from the valve core 3. The guide cavity 6 is funnel-shaped, and the opening diameter of the guide cavity 6 at one end close to the valve core 3 is larger than the diameter at the other end. The funnel-shaped design effectively guides the flow direction of the foaming fluid, reduces the retention time of the fluid in the guide cavity 6, and avoids the blockage problem caused by the slow flow of the foaming material.

[0037] Reference Figure 2 and 3 The drainage structure 7 includes a drainage channel 13 and a spiral drainage member 14. The drainage channel 13 is opened on the valve seat and is connected to the inner cavity of the guide cavity 6. The spiral drainage member 14 is installed on the drainage channel 13. The spiral drainage member 14 includes a mounting sleeve 15 and a spiral plate 16. The spiral drainage member 14 is detachably connected to the drainage channel 13.

[0038] Reference Figure 2 and 3 In order to install the spiral drainage member 14 in the drainage channel 13 and make the inner wall of the installation sleeve 15 after installation flush with the inner wall of the liquid inlet end of the first valve seat 1, a mounting hole 17 is provided at one end of the drainage channel 13 away from the valve core 3, and the mounting hole 17 is connected to the inner wall of the drainage channel 13, so that a mounting step is formed on the drainage channel 13. An annular groove 18 is provided on the mounting step, and internal threads are provided on the inner walls on both sides of the opposite sides of the annular groove 18. External threads matching the internal threads in the annular groove 18 are provided on the inner wall and outer wall of one end of the installation sleeve 15, respectively. Thus, the installation sleeve 15 is threadedly connected in the annular groove 18.

[0039] Reference Figure 3 and 5 When the installation sleeve 15 is installed in the drainage channel 13, in order to facilitate the removal of the installation sleeve 15 and the spiral plate 16, a plurality of insertion holes 19 are opened on the end surface of the installation sleeve 15 away from the valve core 3. When removing, the installation sleeve 15 and the spiral plate 16 are removed synchronously by inserting the plug-in into the plug-in hole 19 and rotating the plug-in.

[0040] Reference Figure 1 and 2 In order to further guarantee the service life of the valve and keep the inner cavity of the valve in a clean and tidy state, two ventilation pipe openings 20 connected to the guide cavity 6 are arranged on the side wall of the second valve seat 2. In the initial state, the ventilation pipe opening 20 is in a blocked state through the pipe cap. The two ventilation pipe openings 20 are arranged at an angle of 270 degrees, one of which is arranged on one side of the valve core 3, and the other is arranged on the other side of the valve core 3. In the initial state, when the inner cavity of the valve is purged, the air outlet of the air gun is inserted at the ventilation pipe opening 20, so that the ventilation pipe openings 20 on both sides are in a ventilated state. At this time, high-pressure gas is introduced into one of the ventilation pipe openings 20, so that the inner cavity attachments of the valve are blown out of the outside of the valve.

[0041] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second", "third" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and similar words do not indicate a quantitative limit, but indicate that there is at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "first", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A valve structure for facilitating the flow of a foaming fluid, comprising a first valve seat (1), a second valve seat (2), and a valve core (3) rotating between the first valve seat (1) and the second valve seat (2), characterized in that: The first valve seat (1) is provided with a sealing body (4) which slides along the direction of fluid flow, and a reset member (5) is provided between the sealing body (4) and the first valve seat (1). In an initial state, a gap between the valve core (3) and the sealing body (4) is set to be less than 0.7 mm, and a guide cavity (6) is provided at one end of the second valve seat (2) close to the valve core (3), and a guide structure (7) for accelerating the flow of fluid is provided at one end of the guide cavity (6) away from the valve core (3).

2. A valve structure for facilitating the flow of foaming fluid according to claim 1, characterized in that: The first valve seat (1) and the second valve seat (2) are connected via bolts, and the valve core (3) is rotatably connected to the second valve seat (2).

3. A valve structure for facilitating the flow of foaming fluid according to claim 2, characterized in that: The sealing body (4) comprises a guide block (8) sliding on the first valve seat (1), and a sealing block (9) integrally formed on the guide block (8); the reset member (5) is arranged between the guide block (8) and the first valve seat (1); a plurality of mounting grooves (10) are evenly spaced on the side wall of the first valve seat (1); the reset member (5) is a spring, one end of which is fixed in the mounting groove (10) and the other end is fixed on the guide block (8); the spacing between the sealing block (9) and the valve core (3) is less than 0.7 mm.

4. A valve structure for facilitating the flow of foaming fluid according to claim 3, characterized in that: A first sealing ring (11) is provided at the connection between the first valve seat (1) and the second valve seat (2); when the valve core (3) blocks the flow of fluid, a second sealing ring (12) is provided on the side of the sealing block (9) that is in contact with the spherical surface of the valve core (3); and the second sealing ring (12) is in line contact with the spherical surface of the valve core (3).

5. A valve structure for facilitating the flow of foaming fluid according to claim 2, characterized in that: The flow guiding cavity (6) is funnel-shaped, and the opening diameter of the flow guiding cavity (6) at one end close to the valve core (3) is larger than the diameter at the other end.

6. A valve structure for facilitating the flow of foaming fluid according to claim 5, characterized in that: The drainage structure (7) comprises a drainage channel (13) opened on the valve seat and connected to the drainage chamber (6), and a spiral drainage member (14) arranged on the drainage channel (13); the spiral drainage member (14) comprises a mounting sleeve (15) and a spiral plate (16) integrally formed on the inner wall of the mounting sleeve (15); the spiral drainage member (14) and the drainage channel (13) are detachably connected.

7. A valve structure for facilitating the flow of foaming fluid according to claim 6, characterized in that: A mounting hole (17) is provided at one end of the drainage channel (13) away from the valve core (3), the mounting hole (17) being connected to the inner cavity of the drainage channel (13) and forming a mounting step on the drainage channel (13), an annular groove (18) being provided on the mounting step, internal threads being provided on both sides of the inner wall of the annular groove (18), external threads being provided on the inner wall and the outer wall of one end of the mounting sleeve (15), the mounting sleeve (15) being threadedly connected in the annular groove (18), and a plurality of insertion holes (19) being provided on the end surface of the mounting sleeve (15) away from the valve core (3).

8. A valve structure for facilitating the flow of foaming fluid according to claim 7, characterized in that: Two ventilation pipe openings (20) connected to the guide cavity (6) are arranged on the side wall of the second valve seat (2), wherein one ventilation pipe opening (20) is arranged on one side of the valve core (3), and the other ventilation pipe opening (20) is arranged on the other side of the valve core (3). In the initial state, the ventilation pipe opening (20) is threadedly connected to the end of the ventilation pipe through a pipe cap, so that the ventilation pipe is in a blocked state.

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