Check valve body

Abstract

The utility model discloses a check valve body, which relates to the technical field of check valves and comprises a valve body cavity, a valve cover is arranged at the top end of the valve body cavity, a check component is arranged at the bottom end of the valve cover, a connecting plate is arranged in the valve body cavity, and a through hole matched with the check component is formed in the top end of the connecting plate. Connecting pipes are arranged at the two ends of the valve body cavity, flange plates are arranged on the outer sides of the circumferences of the connecting pipes, a filtering assembly is arranged at one end of one set of connecting pipes, and an auxiliary assembly is arranged in the other set of connecting pipes. Through the arrangement of the non-return assembly, the balance between the gravity of the non-return assembly and hydrodynamic force can be utilized to effectively prevent fluid from flowing back, and the one-way flowability and safety of the fluid are ensured; in addition, by replacing gravity seats with different weights, accurate control over the fluid flow can be achieved, and the requirements for flow adjustment under different working conditions are met.

Description

Technical Field

[0001] The utility model relates to the technical field of check valves, and more specifically, to a check valve body. Background Art

[0002] A check valve is an automatic valve that opens or closes depending on the flow of fluid in the pipeline, and is mainly used to prevent the reverse flow of fluid. The design purpose of the check valve is to allow the fluid to flow in only one direction. Once the fluid attempts to flow in the reverse direction, the valve will close. Due to its reliability and wide application, the check valve has become an essential safety device in water supply systems, pumping stations, air conditioning systems, heating systems, and various industrial processes.

[0003] However, although the check valve performs well in many fields due to its excellent performance and wide application, its working principle is to open or close automatically relying on the power of fluid flow, which limits its direct regulation of flow rate and cannot flexibly adjust the opening state according to the pressure change of the conveyed fluid, thus affecting its flexibility of use. In addition, particulate impurities in the fluid may enter the valve body chamber along with the fluid. Under the action of high-speed fluid, these impurities may cause erosion and wear to the inside of the valve body, thereby reducing the expected service life of the check valve.

[0004] For the problems in the related art, no effective solution has been proposed yet. Summary of the Utility Model

[0005] In view of the problems in the related art, the present utility model provides a check valve body to overcome the above technical problems existing in the prior related art.

[0006] To this end, the specific technical solution adopted by the present utility model is as follows:

[0007] A check valve body includes a valve body chamber, a valve cover is arranged at the top end of the valve body chamber, a check component is arranged at the bottom end of the valve cover, a connecting plate is arranged inside the valve body chamber, and a through hole matching with the check component is opened at the top end of the connecting plate; connecting pipes are arranged at both ends of the valve body chamber, a flange is arranged on the circumferential outer side of the connecting pipe, a filtering component is arranged at one end of one group of connecting pipes, and an auxiliary component is arranged inside the other group of connecting pipes.

[0008] Furthermore, in order to increase the sealing effect of the overall structure and improve the functionality of the check valve, the valve body chamber and the valve cover are fixed by a plurality of bolts; a sealing ring is arranged at one end of the flange away from the valve body chamber.

[0009] Furthermore, in order to effectively prevent the reverse flow of fluid and ensure the overall stability and safety, the check component includes a support frame arranged at the bottom end of the valve cover, a limit seat is arranged through the inner bottom end of the support frame, the limit seat and the support frame are matched by a spring, and a gravity seat is sleeved on the circumferential outer side of the limit seat.

[0010] Furthermore, in order to effectively intercept impurities and solid particles in the fluid and ensure the cleanliness of the fluid, the filter assembly includes a limit groove opened at one end of the connecting pipe, an installation seat is arranged inside the limit groove, and a plurality of filter holes are opened at one end of the installation seat.

[0011] Furthermore, in order to achieve double protection against the reverse flow of the fluid and significantly reduce the impact force of the fluid on downstream equipment and pipelines, the auxiliary assembly includes a fluid passage opened inside the connecting pipe. An inlet is arranged at one end of the fluid passage close to the valve body cavity, and an outlet is arranged at one end of the fluid passage far from the valve body cavity; the fluid passage includes a plurality of passage groups, and the adjacent passage groups are centrosymmetric structures. The passage group is composed of passage one and passage two. The bottom of passage one is connected to the bottom of passage two, and the bottom of passage one is connected to the inlet. The top of passage one is connected to the top of passage two; Passage one includes a contraction section and an expansion section, and the bottom of the contraction section is connected to the top of the inlet, and the top of the contraction section is connected to the bottom of the expansion section; Passage two includes an arc section and an inclined section. The bottom of the arc section is connected to the bottom of the contraction section, the top of the arc section is connected to the bottom of the inclined section, and the top of the inclined section is connected to the top of the expansion section.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. By setting the check valve assembly, the present utility model can effectively prevent the reverse flow of the fluid by utilizing the balance between its gravity and fluid power, ensuring the unidirectional fluidity and safety of the fluid; in addition, by replacing the gravity seats with different weights, precise control of the fluid flow rate can be achieved to meet the requirements of flow regulation under different working conditions.

[0014] 2. By setting the filter assembly, the present utility model can effectively intercept impurities and solid particles in the fluid, ensure the cleanliness of the fluid, prevent impurities from depositing inside the valve body cavity, reduce the problems of valve body blockage and wear caused by particle accumulation, and thus extend the service life of the check valve.

[0015] 3. By setting the auxiliary assembly, the present utility model realizes double protection against the reverse flow of the fluid. It can not only effectively prevent the reverse flow of the fluid, but also significantly reduce the impact force of the fluid on downstream equipment and pipelines, thereby further enhancing the stable operation and safety guarantee of the entire system. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1Schematic diagram of the structure of a check valve body according to an embodiment of the present utility model;

[0018] Figure 2 One of the cross-sectional views of a check valve body according to an embodiment of the present utility model;

[0019] Figure 3 Is Figure 2 Partial enlarged view at position A in

[0020] Figure 4 Is Figure 2 Partial enlarged view at position B in

[0021] Figure 5 Another cross-sectional view of a check valve body according to an embodiment of the present utility model;

[0022] Figure 6 Is Figure 5 Partial enlarged view at position C in

[0023] In the figure:

[0024] 1. Valve body cavity; 2. Valve cover; 3. Check assembly; 301. Support frame; 302. Limit seat; 303. Spring; 304. Gravity seat; 4. Connecting plate; 5. Through hole; 6. Connecting pipe; 7. Flange; 8. Filter assembly; 801. Limit groove; 802. Mounting seat; 803. Filter hole; 9. Auxiliary assembly; 901. Fluid passage; 9011. Passage one; 90111. Contraction section; 90112. Expansion section; 9012. Passage two; 90121. Arc section; 90122. Inclined section; 902. Water inlet; 903. Water outlet; 10. Bolt; 11. Sealing ring. Detailed implementation manners

[0025] To further illustrate the embodiments, the present utility model provides drawings, which are part of the disclosure of the present utility model. They are mainly used to illustrate the embodiments and can be combined with the relevant descriptions in the specification to explain the operating principle of the embodiments. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the present utility model. The components in the figures are not drawn to scale, and similar component symbols are usually used to represent similar components.

[0026] According to an embodiment of the present utility model, a check valve body is provided.

[0027] Now, the present utility model will be further described in conjunction with the drawings and specific implementation manners. As Figures 1-6As shown in the figure, the check valve body according to the embodiment of the present utility model includes a valve body cavity 1. A valve cover 2 is provided at the top end of the valve body cavity 1. A check component 3 is provided at the bottom end of the valve cover 2. A connecting plate 4 is provided inside the valve body cavity 1. A through hole 5 that cooperates with the check component 3 is opened at the top end of the connecting plate 4. Connecting pipes 6 are provided at both ends of the valve body cavity 1. Flange plates 7 are provided on the circumferential outer side of the connecting pipes 6. A filtering component 8 is provided at one end of one group of connecting pipes 6, and an auxiliary component 9 is provided inside the other group of connecting pipes 6.

[0028] By means of the above technical solution of the present utility model, by providing the check component 3, the balance between its gravity and hydrodynamic force can be utilized to effectively prevent the reverse flow of the fluid, ensuring the unidirectional fluidity and safety of the fluid. By providing the filtering component 8, impurities and solid particles in the fluid can be effectively intercepted, ensuring the cleanliness of the fluid, preventing impurities from depositing inside the valve body cavity 1, and reducing the problems of valve body blockage and wear caused by particle accumulation, thereby extending the service life of the check valve. By providing the auxiliary component 9, double protection against the reverse flow of the fluid is achieved. It can not only effectively prevent the reverse flow of the fluid, but also significantly reduce the impact force of the fluid on downstream equipment and pipelines, thereby further enhancing the stable operation and safety guarantee of the entire system.

[0029] In one embodiment, for the above-mentioned valve body cavity 1, the valve body cavity 1 and the valve cover 2 are fixed by a plurality of bolts 10. A sealing ring 11 is provided at one end of the flange plate 7 away from the valve body cavity 1, thereby increasing the sealing effect of the overall structure and improving the functionality of the check valve.

[0030] In one embodiment, for the above-mentioned check component 3, the check component 3 includes a support frame 301 provided at the bottom end of the valve cover 2. A limit seat 302 is penetrated through the inner bottom end of the support frame 301. The limit seat 302 and the support frame 301 are cooperated by a spring 303. A gravity seat 304 is sleeved on the circumferential outer side of the limit seat 302, thereby effectively preventing the reverse flow of the fluid and ensuring the overall stability and safety.

[0031] The working principle of the check component 3 is as follows: When the fluid enters the inside of the valve body cavity 1 through the connecting pipe 6, the fluid generates a certain pressure on the gravity seat 304. The gravity seat 304 and the limit seat 302 compress the spring 303 to a certain extent, causing the gravity seat 304 to lose cooperation with the through hole 5, and the fluid flows through the through hole 5 into the next connecting pipe 6. When the fluid pressure decreases, the gravity seat 304 moves downward under the elastic force of the spring 303 and cooperates with the through hole 5, effectively preventing the reverse flow of the fluid and ensuring the overall stability and safety.

[0032] In one embodiment, for the above-mentioned filtering component 8, the filtering component 8 includes a limiting groove 801 opened at one end of the connecting pipe 6. An installation seat 802 is arranged inside the limiting groove 801. A plurality of filtering holes 803 are opened at one end of the installation seat 802, so as to effectively intercept impurities and solid particles in the fluid and ensure the cleanliness of the fluid.

[0033] In one embodiment, for the above-mentioned auxiliary component 9, the auxiliary component 9 includes a fluid passage 901 opened inside the connecting pipe 6. A water inlet 902 is arranged at one end of the fluid passage 901 close to the valve body cavity 1, and a water outlet 903 is arranged at one end of the fluid passage 901 far from the valve body cavity 1; the fluid passage 901 includes a plurality of channel groups, and the adjacent channel groups are centrosymmetric structures. The channel group is composed of a channel one 9011 and a channel two 9012. The bottom of the channel one 9011 is connected to the bottom of the channel two 9012, and the bottom of the channel one 9011 is connected to the water inlet 902, and the top of the channel one 9011 is connected to the top of the channel two 9012; the channel one 9011 includes a contraction section 90111 and an expansion section 90112, and the bottom of the contraction section 90111 is connected to the top of the water inlet 902, and the top of the contraction section 90111 is connected to the bottom of the expansion section 90112; the channel two 9012 includes an arc section 90121 and an inclined section 90122. The bottom of the arc section 90121 is connected to the bottom of the contraction section 90111, the top of the arc section 90121 is connected to the bottom of the inclined section 90122, and the top of the inclined section 90122 is connected to the top of the expansion section 90112, thus realizing double guarantee for the reverse flow of the fluid and significantly reducing the impact force of the fluid on the downstream equipment and pipelines.

[0034] The working principle of the auxiliary component 9 is as follows: The fluid enters the fluid passage 901 through the valve body cavity 1 via the water inlet 902 and flows towards the water outlet 903 under the action of the channel one 9011 and the channel two 9012, so as to realize the one-way flow of the fluid. Due to the inertia of the fluid, when passing through the channel one 9011 and the channel two 9012 in different directions, the flow resistance is different, so the one-way flow is realized. Furthermore, the fluid can be quickly discharged from the water outlet 903, the outflow of the fluid is accelerated, the fluid backflow is prevented, and the check valve effect is further improved.

[0035] To facilitate the understanding of the above technical solutions of the present invention, the working principle or operation method of the present invention in the actual process will be described in detail below.

[0036] In practical applications, the check valve body is installed on the pipeline through the flange 7. The fluid inside the pipeline is filtered through the filter holes 803, effectively intercepting impurities and solid particles in the fluid, ensuring the cleanliness of the fluid. The filtered fluid enters the valve body cavity 1 through the connecting pipe 6. The fluid generates a certain pressure on the check assembly 3 (the working principle of the check assembly 3 is as shown above), causing the check assembly 3 to lose its fit with the through hole 5, so that the fluid flows into the auxiliary assembly 9 through the valve body cavity 1 (the working principle of the auxiliary assembly 9 is as shown above), reducing the impact force of the fluid on the downstream equipment and pipeline, and flowing into the next pipeline through the auxiliary assembly 9.

[0037] In summary, by means of the above technical solutions of the present invention, by setting the check assembly 3, the balance between its gravity and fluid power can be utilized to effectively prevent fluid backflow, ensuring the one-way fluidity and safety of the fluid; in addition, by replacing the gravity seats 304 with different weights, precise control of the fluid flow rate can be achieved, meeting the requirements for flow regulation under different working conditions. By setting the filter assembly 8, impurities and solid particles in the fluid can be effectively intercepted, ensuring the cleanliness of the fluid, preventing impurities from depositing inside the valve body cavity 1, reducing valve body blockage and wear problems caused by particle accumulation, and thus extending the service life of the check valve. By setting the auxiliary assembly 9, double protection against fluid backflow is achieved. It can not only effectively prevent fluid backflow, but also significantly reduce the impact force of the fluid on the downstream equipment and pipeline, thereby further enhancing the stable operation and safety guarantee of the entire system.

[0038] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "setting", "connection", "fixation", "swivel connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. Unless otherwise clearly defined, for those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A check valve body, comprising a valve body cavity (1), characterized in that, A valve cover (2) is provided at the top of the valve body cavity (1). A check component (3) is provided at the bottom end of the valve cover (2). A connecting plate (4) is provided inside the valve body cavity (1). A through hole (5) matching with the check component (3) is formed at the top end of the connecting plate (4). Connecting pipes (6) are provided at both ends of the valve body cavity (1). Flange plates (7) are provided on the circumferential outer sides of the connecting pipes (6). A filtering component (8) is provided at one end of one group of the connecting pipes (6), and an auxiliary component (9) is provided inside the other group of the connecting pipes (6).

2. The check valve body according to claim 1, characterized in that, The valve body cavity (1) and the valve cover (2) are fixed by a plurality of bolts (10). A sealing ring (11) is provided at one end of the flange plate (7) away from the valve body cavity (1).

3. A check valve body according to claim 1, characterized in that, The check component (3) includes a support frame (301) provided at the bottom end of the valve cover (2). A limit seat (302) penetrates through the inner bottom end of the support frame (301). The limit seat (302) and the support frame (301) are matched by a spring (303). A gravity seat (304) is sleeved on the circumferential outer side of the limit seat (302).

4. A check valve body according to claim 1, characterized in that, The filtering component (8) includes a limit groove (801) formed at one end of the connecting pipe (6). An installation seat (802) is provided inside the limit groove (801). A plurality of filtering holes (803) are formed at one end of the installation seat (802).

5. A check valve body according to claim 1, characterized in that, The auxiliary component (9) includes a fluid channel (901) formed inside the connecting pipe (6). A water inlet (902) is provided at one end of the fluid channel (901) close to the valve body cavity (1), and a water outlet (903) is provided at one end of the fluid channel (901) away from the valve body cavity (1).

6. The check valve body according to claim 5, characterized in that, The fluid channel (901) includes a plurality of channel groups, and adjacent channel groups are centrosymmetric structures. The channel group is composed of a channel one (9011) and a channel two (9012). The bottom of the channel one (9011) is connected to the bottom of the channel two (9012), and the bottom of the channel one (9011) is connected to the water inlet (902). The top of the channel one (9011) is connected to the top of the channel two (9012).

7. A check valve body according to claim 6, wherein, The channel one (9011) includes a contraction section (90111) and an expansion section (90112). The bottom of the contraction section (90111) is connected to the top of the water inlet (902), and the top of the contraction section (90111) is connected to the bottom of the expansion section (90112).

8. A check valve body according to claim 7, characterized in that, The channel two (9012) includes an arc section (90121) and an inclined section (90122). The bottom of the arc section (90121) is connected to the bottom of the contraction section (90111). The top of the arc section (90121) is connected to the bottom of the inclined section (90122). The top of the inclined section (90122) is connected to the top of the expansion section (90112).

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