Anti-hydrops one-way valve

Abstract

The utility model relates to an anti-hydrops one-way valve which comprises a valve seat, a valve core, a valve rod, a valve rod and a valve rod. The valve sleeve is of a two-end-through structure and is installed at the end, close to the valve port, of the valve seat, and an inner cavity of the valve sleeve communicates with a channel in the valve seat. The valve element is of a cup-shaped structure, an opening of the cup-shaped structure faces the direction of the valve port, and the valve element is movably installed in the valve sleeve in the axis direction of the valve sleeve; according to the utility model, the design structure is reasonable, on one hand, the opening direction of the cup-shaped valve core faces the valve port of the valve sleeve, so that the problem of liquid accumulation in the valve core during vertical installation is avoided, and the valve opening work is prevented from being influenced by the balance weight problem of the valve core; on the other hand, the liquid passing cavity is formed between the valve element and the valve sleeve, the effective flowing effect of fluid can be achieved, the problem that the strength of the valve sleeve becomes poor due to the fact that holes are formed in the valve sleeve can be solved, and therefore the good protection effect on the valve element can be achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of one-way valves, in particular to a one-way valve capable of preventing liquid accumulation. BACKGROUND

[0002] A one-way valve is an important component in an air conditioning system, which allows fluid to flow in one direction and prevents it from flowing in the opposite direction. In some specific cases, the central axis of the one-way valve is perpendicular to the horizontal plane after installation, and the valve core inside the traditional one-way valve has a cup body structure. After installation, the opening direction of the cup body is generally upward (for example, the Chinese utility model patent with the application number CN202420096628.5), which will cause liquid accumulation inside the valve core when the one-way valve is closed, and the liquid accumulation will affect the overall weight of the valve core and adversely affect the opening and closing of the one-way valve. To this end, the Chinese utility model patent with the application number CN202420378690.3 discloses a valve core assembly, a one-way valve, a pipeline structure, and an air conditioner, which directs the opening direction of the valve core towards the valve port, thereby solving the problem of liquid accumulation inside the valve core when the valve is closed. However, in this scheme, since the valve sleeve and the valve core are both circular shell structures, in order to achieve fluid flow, a plurality of flow holes are formed on the outer wall of the valve sleeve to allow fluid to pass through. This structure has the following problems: on the one hand, the fluid will first flow in the radial direction along the flow holes and then flow in the axial direction during the flow process, which is not ideal for fluid flow; on the other hand, since the flow holes are formed on the outer wall of the valve sleeve, the overall structural strength of the valve sleeve is poor, and the one-way valve is prone to jamming of the valve core during installation due to deformation, which affects the normal use of the one-way valve. SUMMARY

[0003] To solve the problems of poor fluid flow in the existing one-way valve, poor strength of the valve sleeve due to the formation of flow holes, and easy jamming of the valve core, the present application provides a one-way valve capable of preventing liquid accumulation.

[0004] The one-way valve capable of preventing liquid accumulation provided by the present application adopts the following technical scheme:

[0005] A one-way valve capable of preventing liquid accumulation comprises:

[0006] A valve seat having a hollow passage inside, one end of the passage being provided with a valve port;

[0007] A valve sleeve having a through structure at both ends, which is installed at one end of the valve seat close to the valve port, and the inner cavity is in communication with the passage inside the valve seat;

[0008] The valve core is in a cup structure, the opening of the cup structure faces the valve port, the valve core is movably arranged in the valve sleeve along the valve sleeve axis, and a liquid passage is formed between the outer wall of the valve core and the inner wall of the valve sleeve, so that in the open valve state, the fluid can flow along the liquid passage from one end of the valve sleeve to the other end.

[0009] By adopting the above technical scheme, on the one hand, the opening direction of the cup-shaped valve core is directed towards the valve port of the valve sleeve, which is used to avoid the problem of liquid accumulation in the valve core when vertically installed, and to avoid affecting the opening of the valve due to the weight problem; on the other hand, the liquid passage is arranged between the valve core and the valve sleeve, which can not only realize the effective flow of the fluid, but also avoid the problem of poor strength of the valve sleeve caused by the hole in the valve sleeve, thereby achieving good protection effect on the valve core.

[0010] Optionally, the inner wall of the valve sleeve is provided with a limiting portion for limiting the radial direction of the valve core.

[0011] By adopting the above technical scheme, the radial freedom of the valve core is limited by the limiting portion, so that the valve core always only has the freedom of moving along the axis direction and rotating itself, which is beneficial to improve the sealing effect when the valve is closed.

[0012] Optionally, the cross-sectional shape of the inner wall of the valve sleeve is a regular polygon, and the liquid passage is located at the intersection of two adjacent sides of the regular polygon.

[0013] By adopting the above technical scheme, the valve sleeve is made of a regular polygon, which can cooperate with the valve core to form the liquid passage, and is also beneficial to improve the structural strength of itself and avoid deformation problem.

[0014] Optionally, the regular polygon is a regular quadrilateral, and the corner of the regular quadrilateral is provided with a rounded corner.

[0015] By adopting the above technical scheme, the distance of the diagonal of the regular quadrilateral can be shortened as much as possible by the rounded corner, so that the overall structure of the one-way valve can be more compact.

[0016] Optionally, the end of the valve sleeve away from the valve port has a folded edge folded towards the center, and when the valve core moves, the end of the valve core can contact the inner end wall of the folded edge.

[0017] By adopting the above technical scheme, on the one hand, the folded edge can limit the movement of the valve core to avoid the valve core from being separated from the valve sleeve, on the other hand, the structural strength of the valve sleeve can be further enhanced, in addition, the fluid can also flow out from the end of the valve sleeve.

[0018] Optionally, the end of the valve core close to the opening is externally provided with a chamfer, and the minimum diameter of the chamfer is smaller than the diameter of the edge of the valve port, and the maximum diameter of the chamfer is larger than the diameter of the edge of the valve port.

[0019] By adopting the technical scheme, the chamfered part is in contact with the valve port position, and the valve closing effect is realized.

[0020] Optionally, one end of the valve seat has a protruding boss, the valve port is located at the end of the boss, and the valve sleeve is installed on the boss.

[0021] By adopting the technical scheme, the boss can position the installation process of the valve sleeve, and the stability of the connection between the valve sleeve and the valve seat is improved.

[0022] Optionally, the valve body is further included, the valve body is a cylindrical structure with a center through hole, the valve seat is connected with the valve body, and the valve seat, the valve core and the valve sleeve are located inside the valve body.

[0023] By adopting the technical scheme, when the one-way valve is installed, only the valve body needs to be connected with the external pipeline, and the convenience of installation is improved.

[0024] In summary, the present application has at least one of the following beneficial technical effects:

[0025] The utility model discloses the reasonable design structure, one can avoid the problem that the liquid is produced in the valve core inside for avoiding the valve core to produce the problem of the counterweight when installing vertically through the opening direction of cup -shaped valve core to the valve port of valve sleeve, avoids the valve core to influence the opening valve work because of the counterweight problem, on the other hand, the liquid cavity is arranged between the valve core and the valve sleeve, can realize the effective flow effect of fluid, and also can avoid the problem that the strength of valve sleeve is poor because of the hole of valve sleeve, thereby can play the good protection effect to the valve core. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the structure diagram of the utility model in the valve closing state;

[0027] Figure 2 It is the structure diagram of the utility model in the valve opening state;

[0028] Figure 3 It is the cross section view of the utility model;

[0029] Figure 4 It is the perspective view of the valve sleeve of the utility model;

[0030] Figure 5 It is the perspective view of the valve core of the utility model.

[0031] Explanation of reference signs:

[0032] 1, valve body;

[0033] 2, valve sleeve; 201, limiting part; 202, ruffle;

[0034] 3. Valve seat; 301. Valve port;

[0035] 4. Valve core; 401, chamfer;

[0036] 5. Liquid cavity. DETAILED DESCRIPTION

[0037] The present application is further described in detail below with reference to the accompanying drawings.

[0038] like Figures 1-5 As shown, the embodiment of the present application discloses a one-way valve for preventing liquid accumulation, comprising:

[0039] The valve seat 3 has a hollow channel inside, and a valve port 301 is provided at one end of the channel. One end of the valve seat 3 has an outwardly protruding boss, and the valve port 301 is located at the end of the boss.

[0040] The valve sleeve 2 is a through-type structure at both ends. More specifically, the side wall of the valve sleeve 2 is a closed structure without any through holes. It is installed on the end of the valve seat 3 near the valve port 301, wherein the valve sleeve 2 is installed on the boss at the end of the valve seat 3, and the inner cavity of the valve sleeve 2 is connected to the channel inside the valve seat 3.

[0041] The valve core 4 is a cup-shaped structure with an opening facing the valve port 301. It is movably installed in the valve sleeve 2 along the axial direction of the valve sleeve 2, and a liquid cavity 5 is formed between the outer wall of the valve core 4 and the inner wall of the valve sleeve 2. It is configured so that when the valve is open, the fluid can flow along the liquid cavity 5 from one end of the valve sleeve 2 to the other end.

[0042] After the one-way valve is installed, the opening of the valve core 4 faces downward and the bottom of the cup body faces upward, which can prevent the problem of liquid accumulation inside the valve core 4.

[0043] Specifically, the inner wall of the valve sleeve 2 is provided with a limiting portion 201 for radially limiting the valve core 4. In this example, there are four limiting portions 201, which are evenly distributed around the center of the valve sleeve 2, mainly for preventing the valve core 4 from moving in the radial direction.

[0044] Specifically, the cross-sectional shape of the inner wall of the valve sleeve 2 is a regular polygon, and the liquid passage cavity 5 is located at the intersection of two adjacent sides of the regular polygon. More specifically, in this example, the regular polygon is a regular quadrilateral, and the corners of the regular quadrilateral are provided with rounded corners. In addition, the cross-sectional shape of the inner wall of the valve sleeve 2 can also be designed as a regular triangle, a regular pentagon, a regular hexagon, etc., which is not limited here. The outer wall of the valve core 4 is circular in this example, so that a liquid passage cavity 5 can be formed between the valve core 4 and the regular quadrilateral valve sleeve 2.

[0045] Specifically, the valve sleeve 2 has a flange 202 folded inwardly at one end away from the valve port 301, and the end of the valve core 4 can contact the end wall inside the flange 202 when the valve core 4 moves. The flange 202 is used to limit the moving position of the valve core 4 and avoid the valve core 4 from separating from the valve sleeve 2, and also to improve the overall structural strength of the valve sleeve 2.

[0046] Specifically, the valve core 4 has a chamfer 401 provided outside the end close to the opening, and the minimum diameter of the chamfer 401 is smaller than the diameter of the edge of the valve port 301, and the maximum diameter is larger than the diameter of the edge of the valve port 301, which is mainly used to achieve the effect of closing the valve.

[0047] Specifically, the valve body 1 is a cylindrical structure with a center through hole, the valve seat 3 is connected to the valve body 1, and the valve seat 3, the valve core 4 and the valve sleeve 2 are all located inside the valve body 1. The valve seat 3 can be installed on the valve body 1 by welding or threaded connection.

[0048] The above are the preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Any equivalent changes made according to the structure, shape and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. A liquid-accumulation-preventing check valve characterized by comprising: The utility model relates to a valve seat (3) internally provided with a hollow channel, one end of the channel being provided with a valve port (301); a valve sleeve (2) in a through structure at both ends, the valve sleeve (2) being installed at one end of the valve seat (3) close to the valve port (301) and the inner cavity being communicated with the channel inside the valve seat (3); a valve core (4) in a cup structure, the opening of the cup structure facing the direction of the valve port (301), the valve core (4) being movably installed in the valve sleeve (2) along the axial direction of the valve sleeve (2), and a liquid passing cavity (5) being formed between the outer wall of the valve core (4) and the inner wall of the valve sleeve (2) and being arranged to enable fluid to flow along the liquid passing cavity (5) from one end to the other end of the valve sleeve (2) in an open valve state. The inner wall of the valve sleeve (2) is provided with a limiting portion (201) for limiting the valve core (4) in the radial direction. The cross-sectional shape of the inner wall of the valve sleeve (2) is a regular polygon, and the liquid passing cavity (5) is located at the intersection of two adjacent sides of the regular polygon. The regular polygon is a regular quadrilateral, and the corners of the regular quadrilateral are provided with rounded corners.

2. The anti-liquid-accumulation check valve according to claim 1, characterized by The end of the valve sleeve (2) away from the valve port (301) has a folded edge (202) folded towards the center thereof, and the end portion of the valve core (4) can contact the inner end wall of the folded edge (202) when the valve core (4) moves.

3. The anti-liquid accumulation check valve according to claim 1, wherein The end of the valve core (4) close to the opening is externally provided with a chamfer (401), the minimum diameter of the chamfer (401) being smaller than the diameter of the edge of the valve port (301) and the maximum diameter being greater than the diameter of the edge of the valve port (301).

4. The anti-liquid accumulation check valve according to claim 3, wherein One end of the valve seat (3) has a protruding boss, the valve port (301) is located at the end of the boss, and the valve sleeve (2) is installed on the boss.

5. The anti-cupping check valve of claim 1, wherein, The utility model further comprises a valve body (1) in a central through cylindrical structure, the valve seat (3) being connected with the valve body (1), and the valve seat (3), the valve core (4) and the valve sleeve (2) all being located inside the valve body (1).

6. The anti-cupping check valve of claim 1, wherein ​ 7. The anti-cupping check valve of claim 1, wherein ​ 8. The anti-cupping check valve of claim 1, wherein, ​

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