One-way valve

Abstract

The utility model provides a one-way valve which comprises a valve casing, a valve seat, a valve body and a valve ball, a cavity is arranged inside the valve casing, the valve seat and the valve body are arranged in the cavity of the valve casing, the valve seat is provided with a flow inlet hole, the valve body is provided with a plurality of flow outlet holes, the valve ball is arranged between the valve seat and the valve body, the valve seat is further provided with a containing cavity, and the containing cavity is communicated with the valve body. The valve ball is arranged in the containing cavity, the multiple flow passing channels are formed between the valve ball and the inner wall of the containing cavity, the multiple flow passing channels are formed between the valve ball and the containing cavity, liquid can conveniently and rapidly flow through the containing cavity to enter the flow outlet hole, then the flowing efficiency of the liquid is effectively improved, and meanwhile the flowing stability of the liquid is enhanced through flow division. By the adoption of the two valve element assemblies, the liquid backflow prevention capacity can be effectively improved, and then the reliability of the one-way valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid supply systems, and particularly relates to a check valve. Background Art

[0002] A check valve is a fluid control device and an important component of a liquid supply system. Its main function is to allow liquid to flow freely in one direction while preventing or restricting liquid flow in the other direction. The main structure of a check valve includes a valve body, a valve core, and a valve seat. When the check valve works, the valve body, the valve core, and the valve seat cooperate together to control the opening and closing of the valve port and the flow of liquid. Currently, the check valves on the market are in the form of single-port flow. The so-called "single-port flow" means that there is only a single outlet on the valve body for liquid to flow through. The disadvantage of this structure is that the liquid must cross the top of the valve core to reach this outlet smoothly and flow out from it, which greatly limits the liquid flow efficiency and makes the liquid flow unstable. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a check valve to solve the problems of low liquid flow efficiency and poor flow stability in the existing check valve.

[0004] To achieve the above purpose and other related purposes, the utility model provides a check valve, which includes:

[0005] A valve housing with a cavity inside, and the cavity extends along the axial direction of the valve housing.

[0006] A valve seat arranged in the cavity, and an inlet hole is provided on the valve seat, and the inlet hole extends along the axial direction of the valve housing.

[0007] A valve body arranged in the cavity, the valve body and the valve seat are arranged at intervals, and a plurality of outlet holes are provided on the valve body, and the outlet holes penetrate through the valve body along the axial direction thereof; and cooperate with the inlet hole to form a liquid flow channel in the check valve.

[0008] A valve ball arranged between the valve seat and the valve body, and used to open or close the inlet hole.

[0009] In the above technical solution, the liquid flows into the check valve from the bottom. During this process, the liquid flows through the inlet hole of the valve seat, pushes open the valve ball by its own pressure, the liquid passes through the inlet hole, and then passes through the plurality of outlet holes on the valve body and flows out of the check valve. Compared with the single-port flow check valve in the prior art, the plurality of outlet holes on the valve body in this technical solution can effectively improve the liquid flow efficiency and enhance the liquid flow stability.

[0010] In an embodiment of the present utility model, a receiving cavity is provided at one end of the valve body close to the valve ball; the receiving cavity is communicated with the outflow hole, the outflow hole extends into the receiving cavity, and a part of the outflow hole is located on the inner wall of the receiving cavity; the valve ball is arranged in the receiving cavity, and an overflow channel is formed between the outer surface of the valve ball and the inner wall of the receiving cavity.

[0011] In the above technical solution, by providing the receiving cavity on the valve seat, on the one hand, the movement direction and movement trajectory of the valve ball can be effectively limited, and then the flow rate can be controlled by setting the distance between the valve ball and the inflow hole; on the other hand, by forming an overflow channel between the valve ball and the receiving cavity, it is convenient for the liquid to quickly flow through the receiving cavity and enter the outflow hole, thereby effectively improving the flow efficiency of the liquid and enhancing the stability of the liquid flow.

[0012] In an embodiment of the present utility model, the overflow channel is communicated with the outflow hole.

[0013] In the above technical solution, the overflow channel is communicated with the outflow hole, effectively shortening the distance for the liquid to flow through the receiving cavity, and greatly improving the stability and efficiency of the liquid flowing through the receiving cavity.

[0014] In an embodiment of the present utility model, the valve seat, the valve body and the valve ball form a valve core assembly, and at least two groups of the valve core assemblies are arranged in the cavity of the valve housing.

[0015] In the above technical solution, when two groups of the valve core assemblies are arranged in the cavity of the valve housing, the two valve core assemblies are arranged up and down. The liquid flows into the lower valve core assembly from the bottom of the one-way valve, the valve ball is pushed open by the pressure of the liquid itself, the liquid passes through the valve seat, and then passes through a plurality of small holes above the valve body and enters the upper valve core assembly. Similarly, the liquid goes through the above process in turn and finally flows out from the upper end of the one-way valve. By providing at least two groups of valve core assemblies, the liquid backflow can be more effectively prevented, thereby ensuring the stability of the liquid supply system.

[0016] In an embodiment of the present utility model, the valve seat includes:

[0017] A first fitting portion that can be fitted with the bottom of the valve body to connect the valve seat to the bottom of the valve body; a second fitting portion that can be fitted with the top of the valve body to connect the valve seat to the top of the valve body.

[0018] In the above technical solution, when there are two groups of valve core assemblies, the two valve core assemblies are arranged up and down. To ensure the tight fit of the two groups of valve core assemblies, the valve seat must be tightly fitted with the upper and lower valve bodies at the same time. By providing a first fitting portion on the valve seat to fit it with the bottom of the valve body and a second fitting portion to fit it with the top of the valve body, the compactness of the one-way valve structure is effectively improved.

[0019] In an embodiment of the present utility model, an annular flange is provided on the outer peripheral side of the valve seat, and the annular flange forms the first fitting portion and the second fitting portion with the top end and the bottom end of the valve seat respectively.

[0020] In the above design solution, the annular flange is provided to form the first fitting portion and the second fitting portion that cooperate with the valve seat. The annular flange has a simple structure and is easy to process, which can effectively improve the reliability of the parts and reduce the processing cost at the same time.

[0021] In an embodiment of the present utility model, a first annular step and a second annular step are respectively provided at the top end and the bottom end of the valve body; the first annular step cooperates with the first fitting portion, and the second annular step cooperates with the second fitting portion.

[0022] In the above design solution, by respectively providing a first annular step and a second annular step at the bottom end and the top end of the valve body, it is to better make the first annular step cooperate with the first fitting portion and the second annular step cooperate with the second fitting portion.

[0023] In an embodiment of the present utility model, a plurality of sealing mechanisms are provided on the outer side of the valve housing for the sealed connection between parts.

[0024] In the above design solution, the reason for providing a plurality of sealing mechanisms on the outer side of the valve housing is to consider the sealing problem between the one-way valve and the equipment of the liquid supply system when the one-way valve is installed on the equipment of the liquid supply system. By providing a plurality of sealing mechanisms, the sealing performance can be effectively provided to prevent liquid leakage.

[0025] In an embodiment of the present utility model, the sealing mechanism includes a sealing ring groove and a sealing ring. Among them, the sealing ring groove is opened on the outer side surface of the valve housing, and the sealing ring is installed in the sealing ring groove.

[0026] In the above technical solution, the characteristics of the sealing mechanism are refined. Among them, the sealing ring is limited by setting the sealing ring groove, which is beneficial to the stable operation of the sealing ring and is convenient for the installation of the sealing ring at the same time; the elastic sealing ring can effectively improve the sealing performance between the one-way valve and the liquid supply equipment.

[0027] As described above, the one-way valve provided by the present utility model has the following beneficial effects: by providing the accommodation cavity on the valve seat, on the one hand, the movement direction and movement track of the valve ball can be effectively limited, and then the flow rate can be controlled by setting the distance between the valve ball and the inflow hole; on the other hand, by forming a plurality of flow channels between the valve ball and the accommodation cavity, it is convenient for the liquid to quickly flow through the accommodation cavity and enter the outflow hole, thereby effectively improving the flow efficiency of the liquid, and at the same time enhancing the stability of the liquid flow through multi-shunt; further, by adopting two groups of valve core components in the present utility model, the ability to prevent liquid backflow can be effectively improved, and thus the reliability of the one-way valve is improved. Brief Description of the Drawings

[0028] Figure 1 It shows a schematic external structure diagram of the check valve in the embodiment of the present utility model;

[0029] Figure 2 It shows a half-sectional view of the check valve in the embodiment of the present utility model;

[0030] Figure 3 It shows an exploded view of the structure of the check valve in the embodiment of the present utility model;

[0031] Figure 4 It shows a mating diagram of the valve ball and the valve seat in the embodiment of the present utility model (from a bottom view perspective).

[0032] Description of Component Labels

[0033] Valve housing 1, cavity 11, sealing mechanism 12, sealing ring groove 121, sealing ring 122, internal sealing ring 13, valve seat 2, inlet flow hole 21, first mating portion 22, second mating portion 23, annular flange 24, valve body 3, outlet flow hole 31, accommodating cavity 32, flow-through channel 33, first annular step 34, second annular step 35, valve ball 4, valve core assembly 5. Detailed Embodiment

[0034] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model. Unless otherwise defined, the technical terms or scientific terms used herein shall have the ordinary meanings understood by those of ordinary skill in the art in the field to which the present utility model belongs. The words such as "including" used herein are intended to mean that the elements or objects appearing before this word cover the elements or objects listed after this word and their equivalents, without excluding other elements or objects. The "connection" described herein may be a direct connection or an indirect connection, that is, a connection through an intermediate object, unless otherwise specified.

[0035] In view of the problems existing in the prior art, an embodiment of the present utility model provides a check valve, including: valve housing 1, valve seat 2, valve body 3 and valve ball 4.

[0036] Among them, a cavity 11 is provided inside the valve housing 1, and the cavity 11 extends along the axial direction of the valve housing 1.

[0037] The valve seat 2 is arranged in the cavity 11, and an inlet flow hole 21 is provided on the valve seat 2, and the inlet flow hole 21 extends along the axial direction of the valve housing 1.

[0038] The valve body 3 is arranged in the cavity 11. The valve body 3 and the valve seat 2 are arranged at intervals. A plurality of outflow holes 31 are provided on the valve body 3. The outflow holes 31 penetrate through the valve body 3 axially and cooperate with the inflow holes 21 to form the liquid flow channel in the one-way valve. Specifically, in this embodiment, four outflow holes 31 are provided on the valve body 3. In other embodiments, the number of outflow holes 31 can be adjusted according to the actual flow rate requirements.

[0039] The valve ball 4 is arranged between the valve seat 2 and the valve body 3 and is used to open or close the inflow hole 21.

[0040] In the above technical solution, the liquid flows into the one-way valve from the bottom of the one-way valve. In this process, the liquid flows through the inflow hole 21 of the valve seat 2, pushes open the valve ball 4 by the pressure of the liquid itself, the liquid passes through the inflow hole 21, and then passes through a plurality of outflow holes 31 on the valve body 3 and flows out of the one-way valve. Compared with the single-port flow one-way valve in the prior art, the plurality of outflow holes 31 on the valve body 3 in this technical solution can effectively improve the liquid flow efficiency and enhance the liquid flow splitting stability at the same time.

[0041] It is worth mentioning that in the existing designed products, the one-way valve is mostly composed of parts made of metal materials. During the working process of the one-way valve, fine metal chips are easily generated by the friction between metals, which seriously affects the cleanliness of the liquid supply system. In order to avoid this problem, the present utility model adopts an innovative design. Specifically, in this embodiment, the parts forming the one-way valve use non-metallic materials. In this embodiment, the valve ball 4 is made of ceramic, and the valve housing 1, the valve seat 2 and the valve body 3 are made of engineering plastics. In other embodiments, the implementer can adopt other non-metallic materials according to the specific engineering actual situation and parameter requirements.

[0042] Compared with the valve ball 4 made of metal material, the beneficial effect of this solution is that the non-metallic material has relatively good plasticity and is not easy to generate fine chips; at the same time, the valve ball 4 made of non-metallic material can effectively reduce the collision and friction between the valve ball 4 and the valve seat 2 and the valve body 3, thereby avoiding the generation of fine chips and ensuring the cleanliness of the entire liquid supply system.

[0043] Please refer to Figure 3 and Figure 4 , in this embodiment, a receiving cavity 32 is provided at one end of the valve body 3 close to the valve ball 4; the receiving cavity 32 is communicated with the outflow holes 31, the outflow holes 31 extend into the receiving cavity 32, and a part of the outflow holes 31 is located on the inner wall of the receiving cavity 32;

[0044] The valve ball 4 is arranged in the receiving cavity 32, and the valve ball 4 can move up and down in the receiving cavity 32. Four flow channels 33 are formed between the outer surface of the valve ball 4 and the inner wall of the receiving cavity 32 (as Figure 4 ).

[0045] In the above technical solution, by providing a receiving cavity 32 on the valve seat 2, on the one hand, the movement direction and movement trajectory of the valve ball 4 can be effectively defined, and then the flow rate can be controlled by setting the distance between the valve ball 4 and the inflow hole 21; on the other hand, by forming four flow channels 33 between the valve ball 4 and the receiving cavity 32, it is convenient for the liquid to quickly flow through the receiving cavity 32 and enter the outflow hole 31, thereby effectively improving the flow efficiency of the liquid and enhancing the flow splitting stability of the liquid.

[0046] Please refer to Figure 3 Furthermore, in this embodiment, the flow channels 33 are coaxially communicated with the outflow hole 31.

[0047] In the above technical solution, the flow channels 33 are coaxially communicated with the outflow hole 31, effectively shortening the distance that the liquid flows through the receiving cavity 32 and greatly improving the stability and efficiency of the liquid flowing through the receiving cavity 32.

[0048] Furthermore, in this embodiment, the valve seat 2, the valve body 3 and the valve ball 4 form a valve core assembly 5, and at least two groups of valve core assemblies 5 are provided in the cavity 11 of the valve housing 1. In this embodiment, two groups of valve core assemblies 5 are provided in the cavity 11 of the valve housing 1.

[0049] In the above technical solution, when two groups of valve core assemblies 5 are provided in the cavity 11 of the valve housing 1, the two valve core assemblies 5 are arranged up and down. The liquid flows into the lower valve core assembly from the bottom of the check valve, the valve ball 4 is pushed open by the pressure of the liquid itself, the liquid passes through the valve seat 2, and then passes through a plurality of small holes above the valve body 3 and enters the upper valve core assembly 5. Similarly, the liquid goes through the above process in turn and finally flows out from the upper end of the check valve. By providing at least two groups of valve core assemblies 5, the liquid backflow can be more effectively prevented, thereby ensuring the stability of the liquid supply system.

[0050] Please refer to Figure 2 and Figure 3 Furthermore, in this embodiment, the valve seat 2 further includes a first fitting portion 22 and a second fitting portion 23.

[0051] Among them, the first fitting portion 22 can be fitted with the bottom of the valve body 3 to connect the valve seat 2 to the bottom of the valve body 3; the second fitting portion 23 is used to fit with the top of the valve body 3 to connect the valve seat 2 to the top of the valve body 3.

[0052] In the above technical solution, when two groups of valve core assemblies are provided, the two valve core assemblies are arranged up and down. To ensure the compact cooperation of the two groups of valve core assemblies, the valve seat 2 must be closely fitted with the upper and lower valve bodies 3 at the same time. By providing the first fitting portion 22 on the valve seat 2 to fit with the bottom of the valve body 3 and providing the second fitting portion 23 to fit with the top of the valve body 3, the compactness of the check valve structure is effectively improved.

[0053] Further, in this embodiment, an annular flange 24 is provided on the outer peripheral side of the valve seat 2, and the annular flange 24 forms a first fitting portion 22 and a second fitting portion 23 with the top end and the bottom end of the valve seat 2 respectively.

[0054] In the above design solution, the annular flange 24 is provided to form the first fitting portion 22 and the second fitting portion 23 that cooperate with the valve seat 2. The structure of the annular flange 24 is simple and easy to machine, which can effectively improve the reliability of the parts and reduce the processing cost at the same time.

[0055] Please refer to Figure 2 and Figure 3 Further, in this embodiment, a first annular step 34 and a second annular step 35 are respectively provided at the bottom end and the top end of the valve body 3; the first annular step 34 cooperates with the first fitting portion 22, and the second annular step 35 cooperates with the second fitting portion 23.

[0056] In the above design solution, by respectively providing the first annular step 34 and the second annular step 35 at the top end and the bottom end of the valve body 3, it is to better make the first annular step 34 cooperate with the first fitting portion 22 and make the second annular step 35 cooperate with the second fitting portion 23.

[0057] Further, in this embodiment, a plurality of sealing mechanisms 12 are provided on the outer side of the valve housing 1 for sealing connection between parts. In this embodiment, there are two sealing mechanisms 12 on the outer side of the valve housing 1.

[0058] In the above design solution, the reason for providing a plurality of sealing mechanisms 12 on the outer side of the valve housing 1 is to consider the sealing problem between the check valve and the equipment of the liquid supply system when the check valve is installed on the equipment of the liquid supply system. By providing a plurality of sealing mechanisms 12, the sealing performance can be effectively improved and liquid leakage can be prevented.

[0059] Further, in this embodiment, the sealing mechanism 12 includes a sealing ring groove 121 and a sealing ring 122. Among them, the sealing ring groove 121 is opened on the outer side surface of the valve housing 1, and the sealing ring 122 is installed in the sealing ring groove 121.

[0060] In the above technical solution, the features of the sealing mechanism 12 are refined. Among them, the sealing ring 122 is limited by setting the sealing ring groove 121, which is beneficial to the stable operation of the sealing ring 122 and is convenient for the installation of the sealing ring 122 at the same time; the elastic sealing ring 122 can effectively improve the sealing performance between the check valve and the liquid supply equipment.

[0061] Further, in this embodiment, an internal sealing ring 13 is provided at the second fitting portion 23 of the valve seat 2 at the bottom of the check valve to further strengthen the sealing effect of the check valve.

[0062] In summary, the utility model effectively limits the movement direction and trajectory of the valve ball by setting the accommodating cavity on the valve seat. On the one hand, the flow rate can be controlled by setting the distance between the valve ball and the inlet hole. On the other hand, multiple flow channels are formed between the valve ball and the accommodating cavity, facilitating the rapid flow of liquid through the accommodating cavity into the outlet hole, thereby effectively improving the liquid flow efficiency. At the same time, the stability of liquid flow is enhanced by multi-shunt. Further, the utility model adopts two groups of valve core components, which can effectively improve the ability to prevent liquid backflow, thereby improving the reliability of the one-way valve. Therefore, the utility model effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

[0063] As mentioned above, the specific implementation manners of the embodiments of the present application are only described, but the protection scope of the embodiments of the present application is not limited thereto. Any changes or substitutions within the technical scope disclosed in the embodiments of the present application should be covered by the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application should be subject to the protection scope of the claims.

Claims

1. A one-way valve, characterized in that: The one-way valve comprises: A valve housing, wherein a cavity is provided inside the valve housing, and the cavity extends axially along the valve housing; A valve seat is arranged in the cavity, and a flow inlet hole is provided on the valve seat, and the flow inlet hole extends along the axial direction of the valve housing; A valve body is arranged in the cavity, and the valve body and the valve seat are arranged at intervals; a plurality of outflow holes are arranged on the valve body, and the outflow holes penetrate the valve body axially and cooperate with the inflow holes to form a liquid flow channel in the one-way valve; The valve ball is arranged between the valve seat and the valve body and is used to open or close the inlet hole.

2. The one-way valve according to claim 1, characterized in that: An accommodating cavity is provided at one end of the valve body close to the valve ball; The accommodating cavity is in communication with the outflow hole, the outflow hole extends into the accommodating cavity, and the outflow hole is partially located on the inner wall of the accommodating cavity; The valve ball is arranged in the accommodating chamber, and a flow passage is formed between the outer surface of the valve ball and the inner wall of the accommodating chamber.

3. The one-way valve according to claim 2, characterized in that: The flow passage is communicated with the outflow hole.

4. The one-way valve according to claim 1, characterized in that: The valve seat, the valve body and the valve ball form a valve core assembly, and at least two groups of the valve core assemblies are arranged in the cavity of the valve housing.

5. The one-way valve according to claim 4, characterized in that: The valve seat comprises: A first matching portion, which can match with the bottom of the valve body to connect the valve seat with the bottom of the valve body; The second matching portion can match with the top of the valve body to connect the valve seat with the top of the valve body.

6. The one-way valve according to claim 5, characterized in that: An annular flange is provided on the outer peripheral side of the valve seat, and the annular flange forms the first matching portion and the second matching portion with the top end and the bottom end of the valve seat respectively.

7. The one-way valve according to claim 5 or 6, characterized in that: The bottom end and the top end of the valve body are respectively provided with a first annular step and a second annular step; The first annular step cooperates with the first matching portion, and the second annular step cooperates with the second matching portion.

8. The one-way valve according to claim 1, characterized in that: The outer side of the valve housing is provided with multiple sealing mechanisms for sealing connection between parts.

9. The one-way valve according to claim 8, characterized in that: The sealing mechanism comprises a sealing ring groove and a sealing ring, wherein the sealing ring groove is arranged on the outer side surface of the valve housing, and the sealing ring is installed in the sealing ring groove.

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