Noise reduction one-way valve with high-sealing-performance valve element

Abstract

The utility model relates to a noise reduction one-way valve with a high-sealing-performance valve element. The noise reduction one-way valve comprises a valve body internally provided with a through channel; the valve seat is mounted in the channel of the valve body, and a valve port is formed in one end of the center; the valve element is of a cup-shaped structure, is coaxially and movably installed in the valve body, and comprises a first area close to one end of the valve port and capable of making contact with the valve port and a third area far away from one end of the valve port and making contact with the inner wall of the valve body in the axis direction; the valve is reasonable in design structure, the liquid passing hole is formed in the second area far away from the conical structure, damage to the conical first area caused by abrasion of the liquid passing hole can be avoided, the problem of poor sealing performance is avoided, and in the valve closing state, a gap exists between the elastic element and the valve element, so that the sealing performance is improved. According to the one-way valve, elastic force can be prevented from being applied to the valve element in the valve closing process, rapid valve opening of the valve element is facilitated, and when the valve is opened, the valve element can make contact with the elastic element, so that noise generated when the one-way valve works is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of one-way valves, in particular to a one-way valve with high sealing performance of a valve core and low noise. BACKGROUND

[0002] The one-way valve is an important part in an air conditioning system, which allows fluid to flow in one direction and prevents it from flowing in the opposite direction. In the prior art, the valve core inside the one-way valve is usually designed in a conical structure, and a liquid passage is formed in the circumferential direction of the conical structure to facilitate the liquid to pass through the liquid passage. However, since the sealing area where the valve core contacts the valve port is close to the position of the liquid passage, the liquid passage will be worn out after the liquid flows through the liquid passage for a long time, thereby affecting the sealing effect of the conical structure of the valve core.

[0003] In addition, a new type of pipe one-way valve capable of bearing hydraulic impact is disclosed in Chinese Utility Model Patent No. CN201120427371.X, which mainly comprises a valve core, a valve body, a compression spring, a limiting block and a pipe joint. The valve body is hollow to form a chamber, and the limiting groove is arranged in the chamber. The valve core is arranged in the chamber of the valve body until the limiting groove. The valve core is provided with an oil passage, and one end of the valve core is provided with a groove. The groove is connected with the oil passage. One end of the compression spring is fixed in the groove, and the other end of the compression spring is fixedly connected with the limiting block. The limiting block is hollow and arranged in the chamber of the valve body. The pipe joint is hollow and fixedly connected with the valve body. The pipe joint limits the limiting block.

[0004] In the above-mentioned scheme, although the liquid passage is arranged at a position far away from the conical end of the valve core, the distance between them is still relatively close. Moreover, the spring of the above-mentioned scheme acts on the valve core, so that the valve core is in a normally closed state inside the one-way valve. When the valve is opened, a large pressure is required to push the valve core to complete the opening of the valve. Moreover, the valve core is prone to generate a large noise during the opening process. The above-mentioned scheme cannot well solve the problem of noise reduction. Utility model content

[0005] In order to solve the defects in the design of the position of the liquid passage of the valve core of the existing one-way valve in the background art, which easily causes damage to the valve core and poor sealing performance, and cannot solve the problem of noise reduction of the valve core and the problem of requiring a large pressure during the opening process, the application provides a one-way valve with high sealing performance of a valve core and low noise.

[0006] The one-way valve with high sealing performance of a valve core and low noise provided by the application adopts the following technical scheme:

[0007] The one-way valve with high sealing performance of a valve core and low noise comprises:

[0008] The valve body has a through channel inside;

[0009] A valve seat is installed in the passage of the valve body and has a valve port at a center end;

[0010] A valve core is cup-shaped and coaxially and movably installed in the valve body and includes a first region near the valve port and capable of contacting the valve port, a third region away from the valve port and contacting the inner wall of the valve body, and a second region between the first region and the third region, the second region of the valve core being provided with a liquid passage hole in the circumferential direction.

[0011] By adopting the above technical scheme, the valve port is divided into three working regions along the axial direction, the first region is used to contact the valve port to realize the closing or opening function of the check valve, the second region is mainly used for fluid flow in the open state, so that the fluid enters the valve core from the liquid passage hole and then flows to the other end of the valve body, and the third region is mainly used to limit the radial deviation of the valve core in the valve body, which is beneficial to the movement of the valve core along the axial direction, thereby improving the sealing performance of the check valve. Since the second region is far away from the first region, the wear of the first region caused by damage of the liquid passage hole after long-term use can be avoided, which is beneficial to prolong the service life of the check valve.

[0012] Optionally, the first region is located at the bottom end of the cup-shaped valve core, and the outer diameter of the first region is in a conical structure, and the size of the conical structure gradually increases from the end near the valve port to the end away from the valve port.

[0013] By adopting the above technical scheme, the first region with a conical structure is used to contact the valve port, thereby realizing the plugging effect of the valve port, and having the advantages of simple structure and good sealing effect.

[0014] Optionally, the outer diameter of the second region of the valve core is smaller than the outer diameter of the third region.

[0015] By adopting the above technical scheme, since the outer diameter of the second region is smaller than the outer diameter of the third region, a gap is formed between the outer wall of the second region and the valve body, and in the open state, the fluid can enter the gap and flow to the other end of the valve body through the liquid passage hole of the second region.

[0016] Optionally, the outer diameter of the second region of the valve core is equal to the outer diameter of the third region, and the valve body is provided with a first step portion, and the inner wall of the first step portion contacts the outer wall of the third region of the valve core.

[0017] By adopting the above technical scheme, a gap can also be formed between the outer wall of the second region and the valve body, thereby facilitating the fluid to pass through the liquid passage hole, and the liquid passage hole of this scheme is farther away from the conical first region, thereby having a longer service life.

[0018] Optionally, the limiting device is arranged in the channel of the valve body and used for limiting the moving stroke of the valve core.

[0019] By using the above technical scheme, the valve core is prevented from being separated from the valve body.

[0020] Optionally, the limiting device is a limiting sleeve arranged at the tail end of the channel of the valve body, and the end of the valve core can be in contact with the end face of the limiting sleeve when the valve core moves.

[0021] By using the above technical scheme, the limiting sleeve can be used to limit the valve core, and the limiting sleeve can be detachably arranged in the valve body, so that the valve core can be easily disassembled.

[0022] Optionally, the limiting device is a second step portion arranged at the tail end of the valve body and recessed towards the center, and the end of the valve core can be in contact with the end face of the second step portion when the valve core moves.

[0023] By using the above technical scheme, the second step portion with an inner diameter smaller than the outer diameter of the valve core is used to limit the valve core, so that the valve core cannot be disassembled from the direction of the second step portion, and the structure is more stable.

[0024] Optionally, the fixed plate is arranged in the internal channel of the valve body, and the elastic element is arranged on the fixed plate and arranged along the center axis of the valve body.

[0025] By using the above technical scheme, the fixed plate is used as a mounting member of the elastic element, and mainly used for mounting the elastic element, and the elastic element is used for contacting the valve core during the opening of the valve, so as to avoid the problem of excessive noise caused by the valve core, and also can reduce the damage probability of the valve core or other parts.

[0026] Optionally, the elastic element is a conical spring, the center line of the conical spring coincides with the center line of the valve body, the small-diameter end of the conical spring is close to the valve port direction, and when the one-way valve is in the closed state, there is a gap between the conical spring and the valve core.

[0027] By using the above technical scheme, the valve core is prevented from being in the normally closed state under the action of the conical spring, so that only a small force is needed to achieve the opening effect during the opening of the valve.

[0028] In summary, the present application has at least one of the following beneficial technical effects:

[0029] The utility model discloses a reasonable design structure, through with the through liquid hole setting in the second area away from the conical structure, can avoid the damage of the conical first area due to the through liquid hole wear and tear, avoid causing the problem of poor sealing, and in the valve closing state, the gap between elastic element and valve core, can avoid the process of closing the valve to the valve core and exert elastic force, be favorable to the quick valve of valve core, and when opening the valve, the valve core can be contacted with elastic element, thereby reducing the noise problem of check valve work. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is the structure diagram of the utility model embodiment one valve closing state,

[0031] Figure 2 It is the structure diagram of the utility model embodiment one valve opening state,

[0032] Figure 3 It is the structure diagram of the utility model embodiment one valve core,

[0033] Figure 4 It is the structure diagram of the utility model embodiment two valve closing state,

[0034] Figure 5 It is the structure diagram of the utility model embodiment two valve opening state,

[0035] Figure 6 It is the structure diagram of the utility model embodiment two valve core,

[0036] Figure 7 It is the structure diagram of the utility model embodiment three valve closing state,

[0037] Figure 8 It is the structure diagram of the utility model embodiment three valve opening state,

[0038] Figure 9 It is the structure diagram of the utility model embodiment three valve core,

[0039] Figure 10 It is the structure diagram of the utility model embodiment four valve closing state,

[0040] Figure 11 It is the structure diagram of the utility model embodiment four valve opening state,

[0041] Figure 12 It is the structure diagram of the utility model embodiment four valve core,

[0042] Figure 13 It is the structure diagram of the utility model embodiment five valve closing state,

[0043] Figure 14 It is the structure diagram of the utility model embodiment five valve opening state,

[0044] Figure 15 is the structure diagram of the valve core of the embodiment five of the utility model;

[0045] Figure 16 is the structure diagram of the valve core of the embodiment five of the utility model;

[0046] Figure 17 is the structure diagram of the valve core of the embodiment five of the utility model;

[0047] Figure 18 is the structure diagram of the valve core of the embodiment five of the utility model;

[0048] Figure 19 is the structure diagram of the valve core of the embodiment five of the utility model;

[0049] Figure 20 is the structure diagram of the valve core of the embodiment five of the utility model;

[0050] Figure 21 is the structure diagram of the valve core of the embodiment five of the utility model;

[0051] Figure 22 is the structure diagram of the valve core of the embodiment five of the utility model;

[0052] Figure 23 is the structure diagram of the valve core of the embodiment five of the utility model;

[0053] Figure 24 is the structure diagram of the valve core of the embodiment five of the utility model;

[0054] Figure 25 is the structure diagram of the valve core of the embodiment five of the utility model;

[0055] Explanation of reference signs:

[0056] 1, valve body; 101, first step portion; 102, second step portion;

[0057] 2, valve seat; 201, valve port;

[0058] 3, valve core; 301, first area; 302, second area; 303, third area; 304, through liquid hole;

[0059] 4, limiting sleeve;

[0060] 5, fixed plate;

[0061] 6, elastic element. DETAILED DESCRIPTION

[0062] The application will be further described in detail below with reference to the drawings.

[0063] Embodiment one,

[0064] As Figures 1-3 shown, the application discloses a valve core high sealing noise reduction one-way valve, comprising:

[0065] Valve body 1, having a through channel inside;

[0066] Valve seat 2, which is installed in the channel of valve body 1, and has a valve port 201 at the center end;

[0067] Valve core 3, which is cup-shaped structure, is coaxially and movably installed in valve body 1, and includes a first area 301 close to the valve port 201 and capable of contacting the valve port 201, a third area 303 away from the valve port 201 and contacting the inner wall of valve body 1, and a second area 302 between the first area 301 and the third area 303, the second area 302 of the valve core 3 is provided with a liquid passage hole 304 in the circumferential direction.

[0068] Specifically, the first area 301 is located at the bottom end of the cup-shaped valve core 3, and the outer diameter of the first area 301 is tapered structure, the size of the tapered structure gradually increases from the end close to the valve port 201 to the end away from the valve port 201, and the first area 301 of the tapered structure can abut at the valve port 201 for plugging the valve port 201.

[0069] Specifically, the outer diameter of the second area 302 on the valve core 3 is smaller than the outer diameter of the third area 303, and more specifically, the outer diameter of the second area 302 is equal to the maximum outer diameter of the first area 301, and the two are smoothly connected.

[0070] Specifically, it also includes a limiting device arranged in the channel of valve body 1 and used for limiting the moving stroke of valve core 3, in this example, the limiting device is a limiting sleeve 4 installed at the tail end of the channel of valve body 1, when the valve core 3 moves, the end of the valve core 3 can contact the end face of the limiting sleeve 4, the limiting sleeve 4 can be installed in the tail end of the valve body 1 by screw connection, which has the function of being detachable, and can also be connected by welding or other connection.

[0071] Embodiment two,

[0072] As Figures 4-6 shown, the difference between the present embodiment and the above embodiment is that the limiting device is a second step portion 102 arranged at the tail end of the valve body 1 and recessed towards the center, when the valve core 3 moves, the end of the valve core 3 can contact the end face of the second step portion 102, the minimum inner diameter of the second step portion 102 is smaller than the outer diameter of the valve core 3, so that the same effect of limiting the valve core 3 can be achieved, and the structure cancels the limiting sleeve 4 structure in embodiment one, which has the characteristics of simple structure and low cost.

[0073] Example 3

[0074] like Figures 7-9 As shown in Figure 25, this embodiment, based on the above embodiment one, further includes a fixing plate 5 disposed in the internal channel of the valve body 1, and an elastic element 6 is installed on the fixing plate 5, the elastic element 6 being disposed along the central axis of the valve body 1.

[0075] Specifically, the elastic element 6 is a conical spring, the centerline of which coincides with the centerline of the valve body 1. The smaller diameter end of the conical spring is close to the valve port 201, and there is a gap between the conical spring and the valve core 3 when the one-way valve is in the closed state.

[0076] In this example, the fixing plate 5 is a cross-shaped flat plate with a hollow center. It is fixed to the end of the limiting sleeve 4. The conical spring can be fixed to the end of the fixing plate 5 by means of snap-fit ​​or welding, so that the small diameter end is suspended. This has the advantages of ensuring the stability of the conical spring connection structure and good performance.

[0077] Example 4

[0078] like Figures 10-12 As shown in Figure 25, this embodiment, based on the above embodiment 2, further includes a fixing plate 5 disposed in the internal channel of the valve body 1. An elastic element 6 is installed on the fixing plate 5, and the elastic element 6 is disposed along the central axis of the valve body 1.

[0079] Specifically, the elastic element 6 is a conical spring, the centerline of which coincides with the centerline of the valve body 1. The smaller diameter end of the conical spring is close to the valve port 201, and there is a gap between the conical spring and the valve core 3 when the one-way valve is in the closed state.

[0080] In this example, the fixing plate 5 is a cross-shaped flat plate with a hollow center. It is fixed at the end of the second step 102 of the valve sleeve. The conical spring can be fixed at the end of the fixing plate 5 by means of snap-fit ​​or welding, so that the small diameter end is suspended. This has the advantages of ensuring the stability of the conical spring connection structure and good performance.

[0081] Example 5

[0082] like Figures 13-15The difference between the embodiment and the above-mentioned embodiment one is that the outer diameter size of the second area 302 of the valve core 3 is equal to the outer diameter size of the third area 303, and the valve body 1 is provided with a first step portion 101, and the inner wall of the first step portion 101 is in contact with the outer wall of the third area 303 of the valve core 3, that is, the first step portion 101 is arranged on the valve body 1, so that the outer diameters of the second area 302 and the third area 303 of the valve core 3 are the same, thereby further making the second area 302 away from the first area 301, prolonging the service life of the valve core 3, avoiding the wear problem of the first area 301 of the valve core 3, and improving the sealing performance of the one-way valve.

[0083] Embodiment six,

[0084] As shown in Figures 16-18 The difference between the embodiment and the above-mentioned embodiment two is that the outer diameter size of the second area 302 of the valve core 3 is equal to the outer diameter size of the third area 303, and the valve body 1 is provided with a first step portion 101, and the inner wall of the first step portion 101 is in contact with the outer wall of the third area 303 of the valve core 3, that is, the first step portion 101 is arranged on the valve body 1, so that the outer diameters of the second area 302 and the third area 303 of the valve core 3 are the same, thereby further making the second area 302 away from the first area 301, prolonging the service life of the valve core 3, avoiding the wear problem of the first area 301 of the valve core 3, and improving the sealing performance of the one-way valve.

[0085] Embodiment seven,

[0086] As shown in Figures 19-21 The difference between the embodiment and the above-mentioned embodiment three is that the outer diameter size of the second area 302 of the valve core 3 is equal to the outer diameter size of the third area 303, and the valve body 1 is provided with a first step portion 101, and the inner wall of the first step portion 101 is in contact with the outer wall of the third area 303 of the valve core 3, that is, the first step portion 101 is arranged on the valve body 1, so that the outer diameters of the second area 302 and the third area 303 of the valve core 3 are the same, thereby further making the second area 302 away from the first area 301, prolonging the service life of the valve core 3, avoiding the wear problem of the first area 301 of the valve core 3, and improving the sealing performance of the one-way valve.

[0087] Embodiment eight,

[0088] As shown in Figures 22-25The difference between the embodiment and the fourth embodiment is that the outer diameter of the second area 302 of the valve core 3 is equal to the outer diameter of the third area 303, and the valve body 1 is provided with a first step portion 101, and the inner wall of the first step portion 101 is in contact with the outer wall of the third area 303 of the valve core 3, that is, the first step portion 101 is arranged on the valve body 1, so that the outer diameters of the second area 302 and the third area 303 of the valve core 3 are the same, thereby further moving the second area 302 away from the first area 301, prolonging the service life of the valve core 3, avoiding the wear problem of the first area 301 of the valve core 3, and improving the sealing performance of the one-way valve.

[0089] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application, so: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A high packing pressure noise reducing one-way valve, characterized by, The utility model relates to a one-way valve, which comprises: a valve body (1) with a through channel inside; a valve seat (2) installed in the channel of the valve body (1) and provided with a valve port (201) at the center end; a valve core (3) in a cup-shaped structure coaxially and movably installed in the valve body (1) and comprising a first area (301) close to the valve port (201) and capable of contacting the valve port (201), a third area (303) away from the valve port (201) and in contact with the inner wall of the valve body (1), and a second area (302) between the first area (301) and the third area (303), wherein the second area (302) of the valve core (3) is provided with a through liquid hole (304) in the circumferential direction.

2. A high sealing, noise reducing check valve according to claim 1, characterized in that The first area (301) is located at the bottom end of the cup-shaped valve core (3), and the outer diameter of the first area (301) is in a tapered structure, which gradually increases from the end close to the valve port (201) to the end away from the valve port (201).

3. A high sealing, noise reducing check valve according to claim 2, characterized in that The outer diameter of the second area (302) of the valve core (3) is smaller than that of the third area (303).

4. A high sealing, noise reducing check valve according to claim 2, characterized in that The outer diameter of the second area (302) of the valve core (3) is equal to that of the third area (303), and the valve body (1) is provided with a first step portion (101), and the inner wall of the first step portion (101) is in contact with the outer wall of the third area (303) of the valve core (3).

5. A high sealing, noise reducing check valve according to claim 1, characterized in that, The limiting device is a limiting sleeve (4) installed at the tail end of the channel of the valve body (1), and the end of the valve core (3) can contact the end face of the limiting sleeve (4) when the valve core (3) moves.

6. A high sealing, noise reducing check valve according to claim 5, characterized in that The limiting device is a second step portion (102) provided at the end of the valve body (1) and recessed towards the center, and the end of the valve core (3) can contact the end face of the second step portion (102) when the valve core (3) moves.

7. A high sealing, noise reducing check valve according to claim 5, characterized in that The utility model further comprises a fixed plate (5) provided in the internal channel of the valve body (1), wherein the fixed plate (5) is provided with an elastic element (6) installed thereon, and the elastic element (6) is arranged along the central axis of the valve body (1).

8. A high sealing, noise reducing check valve according to claim 1, characterized in that The elastic element (6) is a conical spring, the center line of which coincides with the center line of the valve body (1), the small-diameter end of the conical spring is close to the direction of the valve port (201), and there is a gap between the conical spring and the valve core (3) when the one-way valve is in the closed state.

9. A high sealing, noise reducing check valve according to claim 8, characterized in that ​

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