Ball valve with self-cleaning multi-sealing surface valve seat

Abstract

The utility model relates to ball valve technical field especially a ball valve with self -cleaning multi -sealed surface valve seat, including valve seat, the inside of valve seat is equipped with the valve core, and the valve core is connected with valve seat through adjusting mechanism, and the one end of valve seat is connected with first connecting sleeve, and the inside coaxial of first connecting sleeve is equipped with mounting sleeve, and the inside one end of first connecting sleeve is installed with limit ring, and the section of limit ring is "" L "" type, and one end of mounting sleeve and the side surface contact connection of limit ring, and the inner surface of mounting sleeve is equipped with a plurality of helical flow -guiding vane, and the other end of valve seat is connected with second connecting sleeve, and the one end of second connecting sleeve is equipped with second containing groove. The application can be contacted with the valve core sealing surface through sealing ring, increase the sealing effect of valve core, and can be sealed to the connecting part of valve seat and first connecting sleeve and second connecting sleeve through the cooperation of sealing ring and annular sealing groove, avoid leakage, improve the sealing effect.

Description

Technical Field

[0001] This utility model relates to the field of ball valve technology, and in particular to a ball valve with a self-cleaning multi-sealing surface valve seat. Background Technology

[0002] A ball valve is a type of valve that uses a ball with a central hole to control the flow of fluids (such as water, oil, or gas). It is commonly used in common fluid control devices and is widely applied in petroleum, chemical, and water supply industries.

[0003] In existing ball valves, the sealing performance between the valve core and seat is easily degraded due to the accumulation of impurities, even leading to leakage. Although some ball valves can scrape away impurities by the relative movement of the seat sealing surface and the valve core sealing surface, this scraping process wears down the sealing surfaces of the valve seat and valve core, resulting in poor performance. Furthermore, since sealing is generally achieved through the mating of the valve core sealing surface and the inner wall of the valve seat, the sealing effect is also poor, making media leakage easy. Therefore, we propose a ball valve with a self-cleaning multi-sealing-surface seat. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a ball valve with a self-cleaning multi-sealing valve seat.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a ball valve with a self-cleaning multi-sealing valve seat is designed, including a valve seat, a valve core is provided inside the valve seat, and the valve core is connected to the valve seat through an adjustment mechanism;

[0006] One end of the valve seat is connected to a first connecting sleeve. The first connecting sleeve is coaxially provided with an installation sleeve inside. A limit ring is installed at one end of the first connecting sleeve. The limit ring has an "L" shaped cross section. One end of the installation sleeve is in contact with the side of the limit ring. Several spiral guide vanes are installed on the inner surface of the installation sleeve.

[0007] The other end of the valve seat is connected to a second connecting sleeve. One end of the second connecting sleeve is provided with a second receiving groove. The inside of the second receiving groove is provided with a second surrounding edge. A sealing ring is installed on the inner ring side of the second surrounding edge. The edge of the sealing ring contacts and connects with the side of the valve core.

[0008] Both ends of the valve seat are coaxially mounted with sealing rings, and the adjacent surfaces of the first connecting sleeve and the second connecting sleeve are coaxially provided with annular sealing grooves, with one end of the sealing ring extending into the corresponding annular sealing groove.

[0009] Preferably, the adjusting mechanism includes a mounting bracket mounted on the top of the valve seat, a lead screw rotatably connected to the top of the mounting bracket, a valve stem provided inside the mounting bracket, a threaded groove provided on the top of the valve stem, and the bottom of the lead screw extending into the threaded groove.

[0010] The valve stem has symmetrical guide grooves on its side, and limit rods are installed on both sides inside the mounting bracket, with one end of each limit rod extending into the corresponding guide groove.

[0011] Preferably, the bottom of the valve stem penetrates the valve seat, and a strip groove is provided at the top of the valve core. The bottom of the valve stem penetrates the strip groove, and a guide rod is installed inside the strip groove. A through groove is provided on the side of the bottom end of the valve stem, and the guide rod passes through the through groove.

[0012] A sliding sleeve is slidably connected to the side of the guide rod. One end of the sliding sleeve abuts against the side of the valve stem, and a spring is fitted on one end of the guide rod. One end of the spring abuts against the other end of the sliding sleeve, and the other end of the spring abuts against the side wall of the strip groove.

[0013] Preferably, the bottom side of the valve stem is inclined.

[0014] Preferably, a first rim is installed on one side of the mounting sleeve, and a first receiving groove is opened at one end of the first connecting sleeve. The first rim is moved into the first receiving groove and fastened with bolts.

[0015] Preferably, the guide groove is spirally arranged.

[0016] Preferably, a shank is installed at the top of the lead screw.

[0017] The design scheme proposed in this utility model has the following beneficial effects in application:

[0018] 1. The sealing ring can contact the sealing surface of the valve core, increasing the sealing effect of the valve core. Furthermore, the combination of the sealing ring and the annular sealing groove can seal the connection between the valve seat and the first connecting sleeve and the second connecting sleeve, preventing leakage and improving the sealing effect.

[0019] 2. By setting an installation sleeve inside the first connecting sleeve and setting a spiral guide plate on the inner wall of the installation sleeve, the material flowing through the first connecting sleeve can be guided, so that the material generates a vortex. When the material flows into the valve seat, it can wash away the impurities generated on the sealing surface of the valve seat and the valve core, complete the self-cleaning, and improve the performance. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0022] Figure 3 This is a schematic diagram of the second connecting sleeve structure of this utility model;

[0023] Figure 4This is a side sectional view of the valve of this utility model when it is closed;

[0024] Figure 5 This is a side sectional view of the screw and valve stem structure of this utility model.

[0025] In the diagram: 1. Valve seat; 2. First connecting sleeve; 3. Second connecting sleeve; 4. Mounting bracket; 5. Lead screw; 6. Handle; 7. Mounting sleeve; 8. Limiting ring; 9. First surrounding edge; 10. Spiral guide vane; 11. First receiving groove; 12. Valve core; 13. Valve stem; 14. Limiting rod; 15. Guide groove; 16. Second surrounding edge; 17. Second receiving groove; 18. Sealing ring; 19. Annular sealing groove; 20. Sealing ring; 21. Strip groove; 22. Through groove; 23. Guide rod; 24. Spring; 25. Sliding sleeve; 26. Threaded groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Reference Figures 1-5 A ball valve with a self-cleaning multi-sealing valve seat includes a valve seat 1. A valve core 12 is located inside the valve seat 1. The valve core 12 is connected to the valve seat 1 via an adjusting mechanism. The adjusting mechanism includes a mounting bracket 4 mounted on the top of the valve seat 1. A lead screw 5 is rotatably connected to the top of the mounting bracket 4. A valve stem 13 is located inside the mounting bracket 4. A threaded groove 26 is formed on the top of the valve stem 13. The bottom of the lead screw 5 extends into the threaded groove 26. Guide grooves 15 are symmetrically formed on the sides of the valve stem 13. Limiting rods 14 are installed on both sides inside the mounting bracket 4. One end of each limiting rod 14 extends into the corresponding guide groove 15. The guide grooves 15 are spirally arranged. In actual use, such as... Figure 4 and Figure 5 As shown, through the cooperation of the limiting rod 14 and the guide groove 15, when the lead screw 5 rotates, the lead screw 5 will drive the valve stem 13 to rise and fall under the cooperation of the guide groove 15 and the limiting rod 14, and the valve stem 13 will rotate synchronously during the rising and falling process.

[0028] like Figure 4 As shown, the bottom of the valve stem 13 passes through the valve seat 1, and a strip groove 21 is provided on the top of the valve core 12. The bottom of the valve stem 13 passes through the strip groove 21, and a guide rod 23 is installed inside the strip groove 21. A through groove 22 is provided on the side of the bottom end of the valve stem 13, and the guide rod 23 passes through the through groove 22. When the valve stem 13 rotates, it will drive the valve core 12 to rotate synchronously, thereby adjusting the position of the valve core 12 channel and the sealing surface.

[0029] like Figure 4As shown, a sliding sleeve 25 is slidably connected to the side of the guide rod 23. One end of the sliding sleeve 25 abuts against the side of the valve stem 13, and a spring 24 is sleeved on one end of the guide rod 23. One end of the spring 24 abuts against the other end of the sliding sleeve 25, and the other end of the spring 24 abuts against the side wall of the strip groove 21. The bottom side of the valve stem 13 is inclined. When the valve stem 13 is raised or lowered, the inclined surface at the bottom of the valve stem 13 will move relative to the valve core 12. At this time, the pressure on the spring 24 will change, which will push the valve core 12 to move horizontally. In this way, the valve core 12 will separate from the inner wall of the valve seat 1 during rotation and will not be worn.

[0030] like Figure 1 and Figure 4 As shown, one end of the valve seat 1 is connected to a first connecting sleeve 2. The first connecting sleeve 2 is coaxially provided with an installation sleeve 7. A limit ring 8 is installed at one end of the first connecting sleeve 2. The limit ring 8 has an "L" shaped cross section. One end of the installation sleeve 7 is in contact with the side of the limit ring 8. Several spiral guide vanes 10 are installed on the inner surface of the installation sleeve 7. A first rim 9 is installed on one side of the installation sleeve 7. A first receiving groove 11 is opened at one end of the first connecting sleeve 2. The first rim 9 is moved into the first receiving groove 11 and fastened with bolts. In actual use, the spiral guide vanes 10 will cause the material to form a vortex when flowing through the first connecting sleeve 2. When the vortex flows through the valve core 12, it will wash away the impurities on the surface of the valve core 12, so that the gap between the surface of the valve core 12 and the inner wall of the valve seat 1 will not be blocked by impurities.

[0031] like Figure 2 and Figure 3 As shown, the other end of the valve seat 1 is connected to a second connecting sleeve 3. One end of the second connecting sleeve 3 has a second receiving groove 17. The interior of the second receiving groove 17 has a second perimeter 16. A sealing ring 18 is installed on the inner ring side of the second perimeter 16. The edge of the sealing ring 18 contacts and connects with the side of the valve core 12. The sealing ring 18 can contact the sealing surface of the valve core 12. Figure 4 As shown, this results in better sealing performance of the valve core 12 sealing surface when sealing the internal passage of the valve seat 1.

[0032] like Figure 3 and Figure 4 As shown, sealing rings 20 are coaxially installed at both ends of the valve seat 1. Annular sealing grooves 19 are coaxially opened on the adjacent surfaces of the first connecting sleeve 2 and the second connecting sleeve 3. One end of the sealing ring 20 extends into the corresponding annular sealing groove 19. Through the cooperation of the sealing ring 20 and the annular sealing groove 19, the connection between the valve seat 1 and the first connecting sleeve 2 and the second connecting sleeve 3 can be sealed to prevent leakage.

[0033] Specifically, when using this utility model, the operator fixes the first connecting sleeve 2 and the second connecting sleeve 3 to both ends of the valve seat 1, so that the sealing rings 20 installed at both ends of the valve seat 1 extend into the corresponding annular sealing grooves 19, sealing the gap between the first connecting sleeve 2 and the second connecting sleeve 3 and the valve seat 1 to prevent leakage. At the same time, when the second connecting sleeve 3 is fixed on the valve seat 1, the side of the sealing ring 18 installed in the second connecting sleeve 3 abuts against the sealing surface of the valve core 12 to seal, which can improve the sealing effect of the sealing surface of the valve core 12.

[0034] When the valve needs to be opened, the operator rotates the screw 5. The screw 5, through the threaded groove 26, drives the valve stem 13 to move upward. During this movement, the valve stem 13 rotates synchronously with the limit rod 14 and the guide groove 15. As the valve stem 13 rotates, it drives the valve core 12 to rotate. As the valve core 12 rotates, the valve stem 13 rises relative to the valve core 12, reducing the deformation of the spring 24 and causing the valve core 12 to move horizontally. In this way, when the valve stem 13 rotates, the sealing surface separates from the inner wall of the valve seat 1 and the sealing ring 18, thus preventing wear between the valve core 12 and the sealing ring 18.

[0035] When the channel of valve core 12 is aligned with the channel inside valve seat 1, the valve opens, and external material flows into valve seat 1 through first connecting sleeve 2, and then into second connecting sleeve 3 and out through valve core 12. When the material flows through first connecting sleeve 2, the spiral guide vane 10 inside first connecting sleeve 2 guides the material, causing the material to generate a vortex. When the material flows in valve seat 1, it washes away the impurities remaining on the sealing surface of valve core 12 and inside valve seat 1, thus completing self-cleaning.

[0036] Furthermore, such as Figure 1 and Figure 2 As shown, a handle 6 is installed on the top of the lead screw 5. The handle 6 can reduce the difficulty of rotating the lead screw 5, thereby facilitating the adjustment of the valve stem 13.

[0037] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A ball valve with a self-cleaning multi-sealing surface valve seat, comprising a valve seat (1), characterized in that: The valve seat (1) is equipped with a valve core (12) inside, and the valve core (12) is connected to the valve seat (1) through an adjustment mechanism; One end of the valve seat (1) is connected to a first connecting sleeve (2). The first connecting sleeve (2) is coaxially provided with an installation sleeve (7). One end of the first connecting sleeve (2) is equipped with a limit ring (8). The cross section of the limit ring (8) is "L". One end of the installation sleeve (7) is in contact with the side of the limit ring (8). Several spiral guide vanes (10) are installed on the inner surface of the installation sleeve (7). The other end of the valve seat (1) is connected to a second connecting sleeve (3). One end of the second connecting sleeve (3) is provided with a second receiving groove (17). The inside of the second receiving groove (17) is provided with a second perimeter (16). A sealing ring (18) is installed on the inner ring side of the second perimeter (16). The edge of the sealing ring (18) is in contact with the side of the valve core (12). Both ends of the valve seat (1) are coaxially fitted with sealing rings (20), and the adjacent surfaces of the first connecting sleeve (2) and the second connecting sleeve (3) are coaxially provided with annular sealing grooves (19), with one end of the sealing ring (20) extending into the corresponding annular sealing groove (19).

2. A ball valve with a self-cleaning multi-sealing surface valve seat according to claim 1, characterized in that: The regulating mechanism includes a mounting bracket (4) mounted on the top of the valve seat (1), a screw (5) rotatably connected to the top of the mounting bracket (4), a valve stem (13) is provided inside the mounting bracket (4), a threaded groove (26) is provided on the top of the valve stem (13), and the bottom of the screw (5) extends into the threaded groove (26). The valve stem (13) has symmetrical guide grooves (15) on its side, and limit rods (14) are installed on both sides inside the mounting bracket (4), with one end of each limit rod (14) extending into the corresponding guide groove (15).

3. A ball valve with a self-cleaning multi-sealing surface valve seat according to claim 2, characterized in that: The bottom of the valve stem (13) passes through the valve seat (1), and a strip groove (21) is provided on the top of the valve core (12). The bottom of the valve stem (13) passes through the strip groove (21), and a guide rod (23) is installed inside the strip groove (21). A through groove (22) is provided on the side of the bottom end of the valve stem (13), and the guide rod (23) passes through the through groove (22). A sliding sleeve (25) is slidably connected to the side of the guide rod (23). One end of the sliding sleeve (25) abuts against the side of the valve stem (13), and a spring (24) is sleeved on one end of the guide rod (23). One end of the spring (24) abuts against the other end of the sliding sleeve (25), and the other end of the spring (24) abuts against the side wall of the strip groove (21).

4. A ball valve with a self-cleaning multi-sealing surface valve seat according to claim 3, characterized in that: The bottom side of the valve stem (13) is inclined.

5. A ball valve with a self-cleaning multi-sealing surface valve seat according to claim 1, characterized in that: The first rim (9) is installed on one side of the mounting sleeve (7), and a first receiving groove (11) is opened at one end of the first connecting sleeve (2). The first rim (9) is moved into the first receiving groove (11) and fastened with bolts.

6. A ball valve with a self-cleaning multi-sealing surface valve seat according to claim 1, characterized in that: The guide groove (15) is spirally arranged.

7. A ball valve with a self-cleaning multi-sealing surface valve seat according to claim 1, characterized in that: A shank (6) is mounted on the top of the lead screw (5).

Images