Filtering ball valve

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a filtering ball valve. The filtering ball valve comprises a valve body, a ball body, valve seats and valve seat fixers, a water inlet and a water outlet are formed in the two ends of the valve body respectively, a filtering device is arranged at the water outlet, the ball body is arranged in the valve body, the interior of the ball body is through, openings in the two ends of the ball body are connected with the water inlet and the water outlet respectively, and the filtering ball valve further comprises the valve seats arranged on the two sides of the valve ball, and mounting cavities are formed in the valve seats; the elastic piece is mounted in the mounting cavity; the valve seat fixator is mounted in the valve body, and the valve seat fixator abuts against the side, away from the valve ball, of the valve seat; wherein the axial section of the elastic piece is of a U-shaped structure, the elastic piece comprises two extrusion parts located on the two sides, the two extrusion parts generate extrusion force on the two sides of the installation cavity, and a notch used for achieving radial contraction or expansion of the elastic piece is formed in the elastic piece. According to the filtering ball valve, good sealing between the ball body and the valve seat is ensured while filtering is achieved, and the possibility of fluid leakage is further reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of valves, and particularly relates to a filter ball valve. Background Art

[0002] As an important fluid control device, the filter ball valve is widely used in many industries such as chemical industry, petroleum, natural gas, pharmaceutical, food and water treatment. Its main purpose is to control the on-off of the fluid, and in this process, the impurities and particulate matters in the fluid are effectively removed through the built-in filtering device, so as to protect the downstream equipment from damage and ensure the purity of the fluid medium and the smooth progress of the process.

[0003] However, at present, although there are various filter ball valve designs applied in the market, there are still significant technical bottlenecks in the sealing effect. Specifically, the sealing structure designs of many existing filter ball valves are not delicate enough to maintain long-term stable sealing performance under various working conditions. In the prior art, only achieving the sealing effect through the valve seat and the ball is not stable and reliable. In some working conditions, the valve seat may move or loosen during use due to excessive fluid pressure, and then the sealing performance will gradually decline, resulting in fluid leakage, increasing the maintenance cost and the risk of shutdown. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a filter ball valve for the above-mentioned existing technical problems, achieving the effect of ensuring good sealing between the ball and the valve seat while realizing filtration, and further reducing the possibility of fluid leakage.

[0005] In view of this, the utility model provides a filter ball valve, which includes a valve body, and a valve cavity is provided in the valve body. A ball is installed in the valve cavity, a valve rod is installed at the top of the ball, and the valve body also has a water inlet and a water outlet respectively communicated with the valve cavity. The ball has a water passing channel penetrating through the ball, and the water inlet end and the water outlet end of the water passing channel are respectively communicated with the water inlet and the water outlet. A filtering device is provided at the water outlet, and further includes:

[0006] Valve seats are arranged on both sides of the valve ball, and an installation cavity is provided in the valve seat;

[0007] Elastic members are installed in the installation cavity;

[0008] A valve seat retainer is installed in the valve body, and the valve seat retainer abuts against the side of the valve seat away from the valve ball;

[0009] Wherein, the axial section of the elastic member is in a U-shaped structure. The elastic member includes two extrusion parts located on both sides, and the two extrusion parts generate extrusion forces on both sides of the installation cavity. A notch is provided on the elastic member for realizing radial contraction or expansion of the elastic member.

[0010] Furthermore, the valve seat includes:

[0011] An inner ring body, the two end faces of the inner ring body are respectively abutted against the sphere and the valve seat retainer;

[0012] An outer ring body, the outer ring body is sleeved on the outer peripheral wall of the inner ring body;

[0013] Wherein, an installation cavity is formed on the inner ring body.

[0014] Furthermore, one end of the valve seat retainer that abuts against the inner ring body is an inclined surface.

[0015] Furthermore, the valve body includes:

[0016] A branch pipe, arranged at the bottom of the valve body, and the water passing channel is communicated with the water outlet through the branch pipe;

[0017] Wherein, a filtering device is arranged in the branch pipe, and an opening for installing the filtering device is provided on the branch pipe, and a valve cap is provided on the opening.

[0018] Furthermore, the filtering device includes:

[0019] A filter cartridge, installed in the branch pipe;

[0020] A magnetic attraction rod, located inside the filter cartridge.

[0021] Furthermore, several layers of filter meshes with different pore diameters are arranged inside the filter cartridge.

[0022] Furthermore, one end of the magnetic attraction rod is installed on the valve cap.

[0023] Furthermore, an anti-corrosion coating is provided on the surface of the magnetic attraction rod.

[0024] Furthermore, a valve cover connected to the valve body is installed on the top of the valve body.

[0025] The beneficial effects of the present utility model are:

[0026] 1. By introducing the combined design of the valve seat, the elastic member and the valve seat retainer, wherein the U-shaped structure and the notch design of the elastic member enable the valve seat to more flexibly adapt to the change of the sphere position in the installation cavity. Through the extrusion force of the extrusion part on both sides of the installation cavity, the sealing performance between the valve seat and the sphere is enhanced, and at the same time, the overall stability and durability of the valve body are improved.

[0027] 2. By adopting multiple layers of filter meshes with different pore diameters inside the filtering device and combining with the design of the magnetic attraction rod, not only can impurities and particulate matters in water be effectively filtered out, but also iron particles in water can be removed through magnetic attraction, thus significantly improving the filtering effect of water quality.

[0028] 3. The valve body design includes a branch pipe structure. The filtering device is arranged inside the branch pipe and is installed and replaced through the opening sealed by the valve cap. This design makes the maintenance of the filtering device simple and fast. It is not necessary to disassemble the entire valve body for cleaning or replacement, improving the maintenance efficiency and convenience. Brief Description of the Drawings

[0029] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0030] Figure 2 is the present utility model Figure 1 three-dimensional structural schematic diagram of part A;

[0031] Figure 3 is the present utility model Figure 1 enlarged structural schematic diagram of part A;

[0032] Figure 4 is the present utility model Figure 2 enlarged structural schematic diagram of part B;

[0033] The markings in the figure are shown as:

[0034] 1. Valve body; 2. Valve cavity; 3. Sphere; 4. Valve stem; 5. Water inlet; 6. Water outlet; 7. Water passage; 8. Filtering device; 9. Valve seat holder; 10. Outer ring body; 11. Inner ring body; 12. Elastic member; 13. Branch pipe; 14. Valve cap; 15. Magnetic attraction rod; 16. Valve cover; 17. Filter cartridge; 18. Filter screen. Detailed Embodiment

[0035] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope protected by the present application.

[0036] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0037] Embodiment 1:

[0038] This embodiment provides a filtering ball valve, including a valve body 1, and a valve cavity 2 is provided inside the valve body 1. A sphere 3 is installed in the valve cavity 2. A valve stem 4 is installed at the top of the sphere 3. The valve body 1 also has a water inlet 5 and a water outlet 6 that are respectively communicated with the valve cavity 2. A water passing channel 7 passing through the sphere 3 is provided on the sphere 3. The water inlet end and the water outlet end of the water passing channel 7 are respectively communicated with the water inlet 5 and the water outlet 6. A filtering device 8 is provided at the water outlet 6, and further includes:

[0039] Valve seats are arranged on both sides of the valve ball, and an installation cavity is provided inside the valve seats;

[0040] An elastic member 12 is installed in the installation cavity;

[0041] A valve seat retainer 9 is installed inside the valve body 1, and the valve seat retainer 9 abuts against the side of the valve seat away from the valve ball;

[0042] Among them, the axial cross-section of the elastic member 12 is in a U-shaped structure. The elastic member 12 includes two extrusion parts located on both sides. The two extrusion parts generate extrusion forces on both sides of the installation cavity, and a notch for realizing radial contraction or expansion of the elastic member 12 is provided on the elastic member 12.

[0043] The valve body 1, as the main structure of the filtering ball valve, contains a valve cavity 2 inside, which is used to accommodate and support other components, such as the sphere 3, valve seats, etc. The valve body 1 can be made of stainless steel or other metal materials to ensure strength and corrosion resistance.

[0044] The ball 3 is installed in the valve cavity 2 and is a key component that tightly contacts the valve seat to form a sealing surface. It has a water passage 7 that runs through the center, and the water passage 7 is connected to the water inlet 5 and the water outlet 6 of the valve body 1. The ball 3 controls the opening and closing of the water passage 7 by rotating, thereby controlling the flow of the fluid. The ball 3 can be made of stainless steel or other metal materials to ensure strength and corrosion resistance. The sealing surface formed by the ball 3 and the valve seat enables the filter ball valve to obtain good sealing performance.

[0045] The valve seat is a component arranged on both sides of the sphere 3, and a mounting cavity is provided inside for mounting the elastic member 12. It cooperates with the sphere 3 to form a sealing surface to prevent the fluid from leaking when the valve is closed. The valve seat can be made of polytetrafluoroethylene or other elastic materials to adapt to the shape of the sphere 3 and maintain a good sealing effect. The elastic member 12, a component installed in the valve seat mounting cavity, has a U-shaped structure, including two extrusion parts, and the axial length of the extrusion part is slightly larger than the axial length of the mounting cavity, so that the extrusion part can axially squeeze the valve seat, thereby increasing the resistance and sealing between the valve seat and the valve ball. In addition, the elastic member 12 is annular as a whole, and there is a notch on it, that is, an open structure, so that the elastic member 12 can deform radially, that is, it can have the ability to contract or expand radially when subjected to force. When the elastic member 12 is installed in the mounting cavity and expanded by external force, after the external force is removed, the elastic member 12 contracts radially, generating a radial extrusion force on the valve seat, and can further improve the sealing between the valve seat and the valve ball. The elastic member 12 can be made of elastic metal material to ensure good elasticity and sealing performance. By providing a mounting cavity in the valve seat and providing a tightly fitting elastic sheet in the mounting cavity, the sealing performance between the valve seat and the ball 3 is further improved.

[0046] The valve seat holder 9 is used to fix the valve seat and transmit the extrusion force to prevent the valve seat from moving or loosening during use. The valve seat holder 9 is firmly connected to the valve body 1 by bolts or other means, and the valve seat holder 9 abuts against the side of the valve seat away from the valve ball. The valve seat holder 9 can be made of stainless steel or other metal materials to ensure strength and corrosion resistance. By arranging the valve seat holder 9 abutting against the valve seat in the valve body 1, and the valve seat holder 9 and the valve body 1 are firmly connected by bolts or other means, the sealing and stability between the valve seat and the ball 3 are further improved.

[0047] Embodiment 2:

[0048] This embodiment provides a filter ball valve, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0049] The valve seat comprises:

[0050] An inner ring body 11, both end surfaces of which are in contact with the ball body 3 and the valve seat holder 9 respectively;

[0051] The outer ring body 10 is sleeved on the outer peripheral wall of the inner ring body 11;

[0052] Wherein, the installation cavity is formed on the inner ring body 11.

[0053] The inner ring body 11, as the core component of the valve seat, is in direct contact with the sphere 3 and the valve seat retainer 9, providing stable support and precise positioning for the sphere 3. The installation cavity formed on the inner ring body 11 is used to install the elastic member 12. The design of this installation cavity allows the elastic member 12 to radially contract or expand when under pressure, so as to adapt to the sealing requirements of the sphere 3. When the sphere 3 is subjected to the pressure from the pipeline fluid, the inner ring body 11 will transfer this part of the pressure to the elastic member 12. The elastic member 12 absorbs and disperses these pressures through its deformation. By setting an installation cavity on the inner ring body 11 that can accommodate the U-shaped elastic sheet, the sealing performance and stability of this filter ball valve are improved.

[0054] The outer ring body 10, as the external protective layer of the inner ring body 11, can prevent the inner ring body 11 from being eroded or damaged by the external environment. The outer ring body 10 is sleeved on the outer peripheral wall of the inner ring body 11 and can be connected to the inner ring body 11 by threaded connection or other detachable means, providing additional structural strength for the entire valve seat, and the detachable structure is more convenient for the maintenance and replacement of the inner ring body 11 and the outer ring body 10. By the above method, the valve seat can withstand greater pressure and impact, improving the durability and reliability of this filter ball valve.

[0055] Embodiment 3:

[0056] This embodiment provides a filter ball valve, which, in addition to including the technical solutions of the above embodiments, further has the following technical features.

[0057] One end of the valve seat retainer 9 that abuts against the inner ring body 11 is an inclined surface.

[0058] One end of the valve seat retainer 9 that abuts against the inner ring body 11 is an inclined surface, which helps to provide a smoother transition when the sphere 3 rotates, reducing friction and wear.

[0059] Embodiment 4:

[0060] This embodiment provides a filter ball valve, which, in addition to including the technical solutions of the above embodiments, further has the following technical features.

[0061] The valve body 1 includes:

[0062] The branch pipe 13 is arranged at the bottom of the valve body 1, and the water passing channel 7 is communicated with the water outlet 6 through the branch pipe 13;

[0063] Among them, the filtering device 8 is arranged in the branch pipe 13, and the branch pipe 13 is provided with an opening for installing the filtering device 8, and a valve cap 14 is arranged on the opening.

[0064] The branch pipe 13 connects the water passage 7 of this filter ball valve with the water outlet 6 and provides a space for installing the filtering device 8. The bottom of the valve body 1 is provided with internal threads, and the external threads at the opening part of the branch pipe 13 are threadedly connected with the internal threads at the bottom of the valve body 1. The material of the branch pipe 13 is the same as that of the valve body 1.

[0065] The filtering device 8 is a component arranged at the water outlet 6 and is used for filtering impurities and particulate matters in the fluid. The filtering device 8 can adopt forms such as a filter cartridge 17 and is fixed to the branch pipe 13 by threads or other connection methods. By arranging the branch pipe 13 at the bottom of the valve body 1 and arranging the filtering device 8 in the branch pipe 13, this filter ball valve can simultaneously realize the control and filtering functions of the medium, protect downstream equipment from impurities, and ensure the stable operation of the pipeline system.

[0066] The valve cap 14 is a component used to close or open the installation opening of the filtering device 8. It not only plays a sealing role but also facilitates the installation, replacement, or maintenance of the filtering device 8. The valve cap 14 can be composed of a cap body, a sealing gasket, and fasteners. The cap body is the main part of the valve cap 14, and its shape and size are designed according to the opening of the branch pipe 13; the sealing gasket is located between the cap body and the opening of the branch pipe 13 and plays a sealing role; fasteners such as bolts are used to fix the valve cap 14 on the branch pipe 13. The shape of the valve cap 14 can be cylindrical to match the shape and size of the opening of the branch pipe 13, and the valve cap 14 is fixed to the installation opening of the filtering device 8 by bolts or other connection methods. The valve cap 14 can be made of stainless steel or other metal materials to ensure sufficient strength and corrosion resistance. By arranging the valve cap 14 on the opening, the sealing performance of this filter ball valve is improved and the maintenance of the filtering device 8 is facilitated.

[0067] Example: 5

[0068] This embodiment provides a filter ball valve, which, in addition to including the technical solutions of the above embodiment, also has the following technical features.

[0069] The filtering device 8 includes:

[0070] A filter cartridge 17 installed in the branch pipe 13;

[0071] A magnetic attraction rod 15 located inside the filter cartridge 17.

[0072] The filter cartridge 17 is the core component in the filtering device 8. Its main function is to filter the medium passing through the branch pipe 13, remove impurities such as solid particles and suspended matters therein, and ensure that the medium flowing out of this filter ball valve meets a certain cleanliness standard. The filter cartridge 17 is installed inside the branch pipe 13, between the water passing channel 7 and the water outlet 6. The filter cartridge 17 can be fixed to the branch pipe 13 by means of threads or other connection methods. The filter cartridge 17 can be made of porous materials such as stainless steel mesh to ensure good filtering performance and corrosion resistance. The filter cartridge 17 can be cylindrical for easy installation and replacement. By installing the filter cartridge 17 inside the branch pipe 13, the filtering function of this filter ball valve is realized.

[0073] The magnetic attraction rod 15. The main function of the magnetic attraction rod 15 is to adsorb magnetic impurities in the medium, such as iron filings and rust. The magnetic attraction rod 15 is arranged inside the filter cartridge 17, and one end of the magnetic attraction rod 15 is fixed to the filter cartridge 17 by means of threads or other connection methods. The magnetic attraction rod 15 can be made of an electromagnet or other magnetic materials, and its shape can be strip-shaped for easy arrangement inside the filter cartridge 17. By arranging the magnetic attraction rod 15 inside the filter cartridge 17, the filtering effect of the filtering device 8 is further improved.

[0074] Embodiment 6:

[0075] This embodiment provides a filter ball valve. In addition to including the technical solutions of the above embodiments, it also has the following technical features.

[0076] A number of layers of filter meshes 18 with different pore diameters are arranged inside the filter cartridge 17.

[0077] As an important component in the filtering system, the main function of the filter mesh 18 is to intercept and remove solid particles, impurities, suspended matters, etc. in the fluid. The filter meshes 18 with different pore diameters can be made of different porous materials, such as metal mesh, filter cloth, ceramics, fiber materials, etc. These materials have different pore diameters and filtering precisions to meet different filtering requirements. In this embodiment, the filter mesh 18 can be circular for installation in the cylindrical filter cartridge 17 by means of threads or other connection methods. By arranging a number of layers of filter meshes 18 with different pore diameters inside the filter cartridge 17, hierarchical filtering of impurities with different sizes is realized, and the filtering effect of the filtering device 8 is further improved.

[0078] Embodiment 7:

[0079] This embodiment provides a filter ball valve. In addition to including the technical solutions of the above embodiments, it also has the following technical features.

[0080] One end of the magnetic attraction rod 15 is installed on the valve cap 14.

[0081] The magnetic attraction rod 15 can be fixed to the valve cap 14 through connection means such as threads. Installing the magnetic attraction rod 15 on the valve cap 14 helps to reduce the occupied space of the filtering device 8 and can conveniently adjust its position and direction. When it is necessary to replace or clean the magnetic attraction rod 15, only the valve cap 14 needs to be disassembled for operation, without disassembling the entire valve. By installing one end of the magnetic attraction rod 15 on the valve cap 14, the installation and disassembly process of the magnetic attraction rod 15 is simplified, the flexibility of this filtering ball valve is improved, and the compactness of the structure is enhanced.

[0082] Embodiment 8:

[0083] This embodiment provides a filtering ball valve. In addition to including the technical solutions of the above embodiments, it also has the following technical features.

[0084] An anti-corrosion coating is provided on the surface of the magnetic attraction rod 15.

[0085] The anti-corrosion coating forms a protective barrier on the surface of the magnetic attraction rod 15, effectively isolating the direct contact between the magnetic attraction rod 15 and corrosive media such as moisture, oxygen, acid rain, etc., thereby significantly improving the anti-corrosion performance of the magnetic attraction rod 15.

[0086] Embodiment 9:

[0087] This embodiment provides a filtering ball valve. In addition to including the technical solutions of the above embodiments, it also has

[0088] the following technical features.

[0089] A valve cover 16 connected to the valve body 1 is installed on the top of the valve body 1.

[0090] The valve cover 16 is mainly used to enclose and protect the working components inside this filtering ball valve, such as the ball 3, valve seat, etc. The material of the valve cover 16 can be the same as that of the valve body 1 to ensure sufficient strength and corrosion resistance. The valve cover 16 can be circular to match the overall shape and size of the valve body 1. The valve cover 16 can be fixed to the top of the valve body 1 through other connection means such as bolts. By installing a valve cover 16 connected to the valve body 1 on the top of the valve body 1, the sealing performance of this filtering ball valve is improved, and the detachable installation of the valve body 1 and the valve cover 16 facilitates the maintenance of the inside of the valve body 1.

[0091] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other. The present application is not limited to the above specific implementation manners. The above specific implementation manners are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection scope of the present application.

Claims

1. A filtering ball valve, comprising a valve body (1), wherein the valve body (1) has a valve cavity (2), a ball (3) is installed in the valve cavity (2), a valve stem (4) is installed at the top of the ball (3), the valve body (1) also has a water inlet (5) and a water outlet (6) respectively connected to the valve cavity (2), the ball (3) has a water passage (7) penetrating the ball (3), the water inlet end and the water outlet end of the water passage (7) are respectively connected to the water inlet (5) and the water outlet (6), and a filtering device (8) is provided at the water outlet (6), characterized in that: Also includes: A valve seat is arranged on both sides of the valve ball, and a mounting cavity is arranged in the valve seat; An elastic member (12) is installed in the installation cavity; A valve seat holder (9) is installed in the valve body (1), and the valve seat holder (9) abuts against a side of the valve seat away from the valve ball; The axial cross section of the elastic member (12) is a U-shaped structure, the elastic member (12) comprises two extrusion parts located on two sides, the two extrusion parts generate extrusion forces on two sides of the installation cavity, and the elastic member (12) is provided with a notch for realizing radial contraction or expansion of the elastic member (12).

2. The filter ball valve according to claim 1, characterized in that: The valve seat comprises: An inner ring body (11), the two end surfaces of the inner ring body (11) are respectively in contact with the ball body (3) and the valve seat holder (9); An outer ring body (10), the outer ring body (10) is sleeved on the outer peripheral wall of the inner ring body (11); Wherein, the installation cavity is formed on the inner ring body (11).

3. The filter ball valve according to claim 2, characterized in that: The end of the valve seat fixer (9) that contacts the inner ring body (11) is an inclined surface.

4. The filter ball valve according to claim 1, characterized in that: The valve body (1) comprises: A branch pipe (13) is arranged at the bottom of the valve body (1), and the water passage (7) and the water outlet (6) are connected via the branch pipe (13); The filter device (8) is arranged in the branch pipe (13), and an opening for installing the filter device (8) is provided on the branch pipe (13), and a valve cap (14) is provided on the opening.

5. The filter ball valve according to claim 4, characterized in that: The filtering device (8) comprises: A filter cartridge (17) is installed in the branch pipe (13); The magnetic attraction rod (15) is located in the filter cartridge (17).

6. The filter ball valve according to claim 5, characterized in that: A plurality of layers of filter screens (18) with different pore sizes are arranged inside the filter cartridge (17).

7. The filter ball valve according to claim 5, characterized in that: One end of the magnetic rod (15) is mounted on the valve cap (14).

8. The filter ball valve according to claim 6, characterized in that: The surface of the magnetic attraction rod (15) is provided with an anti-corrosion coating.

9. The filter ball valve according to claim 1, characterized in that: A valve cover (16) connected to the valve body (1) is installed on the top of the valve body (1).

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