A low resistance one-way valve

Abstract

The utility model provides a low-resistance one-way valve, wherein a valve cavity is provided in the valve body, and the valve cavity is a through groove with a circular cross section, the axis of the valve cavity is arranged along a horizontal oblique direction, a discharge port and a feed port are respectively arranged at both ends of the valve cavity, the feed port is threadedly connected to the upper water pipe, the discharge port is covered with a valve cover, a valve core is arranged in the valve cavity, and the valve core can roll in the valve cavity, a valve seat is arranged between the valve core and the upper water pipe, and the periphery of the valve core can be sealed and connected to one end of the valve seat, and the valve core is used to open and close the passage of the valve cavity. The low-resistance one-way valve described in the utility model, when there is no pressure difference between the upstream and downstream pipelines of the valve body, the valve core and the valve seat are combined by gravity, when the medium pressure in the upstream upper water pipe is large, the valve core is pushed and moved by the medium, and the passage of the valve cavity is opened, when the medium pressure in the downstream lower water pipe is large, the valve core is pushed and squeezed to the valve seat by the medium, and the passage of the valve cavity is closed, and the valve cavity is arranged along a horizontal oblique direction, and the valve body can be installed horizontally or vertically, meeting the use requirements of multiple working conditions.

Description

Technical Field

[0001] The utility model belongs to the field of one-way valves, in particular to a low-resistance one-way valve. Background Art

[0002] A one-way valve is a device that allows fluid to flow only along the water inlet, but the medium at the water outlet cannot flow back. It is commonly known as a one-way valve. A one-way valve, also known as a check valve or a non-return valve, is used in hydraulic systems to prevent oil from flowing in the opposite direction, or in pneumatic systems to prevent compressed air from flowing in the opposite direction. In the prior art, in order to prevent the medium from flowing in the opposite direction, horizontally installed one-way valves mostly use a sealing component plus a spring reset method. There is a problem that the forward flow of the one-way valve needs to overcome the spring opening resistance, and there is a certain one-way opening pressure. A vertically installed one-way valve can achieve low-resistance opening by relying on gravity and medium pressure, but it can only be installed vertically, which has certain limitations. Utility Model Content

[0003] In view of this, the utility model aims to provide a low-resistance one-way valve to solve the problem that the one-way valve in the prior art cannot be opened with low resistance or has installation limitations.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A low-resistance one-way valve comprises a valve body, a valve cavity is arranged in the valve body, and the valve cavity is a through groove with a circular cross-section, the axis of the valve cavity is arranged in a horizontal oblique direction, a discharge port and a feed port are respectively arranged at both ends of the valve cavity, the feed port is threadedly connected to a water supply pipe, the discharge port is covered with a valve cover, a valve core is arranged in the valve cavity, and the valve core can roll in the valve cavity, a valve seat is arranged between the valve core and the water supply pipe, and the outer periphery of the valve core can be sealed and connected to one end of the valve seat, and the valve core is used to open and close the passage of the valve cavity.

[0006] Furthermore, the valve core is a spherical ball made of steel or rubber.

[0007] Furthermore, the discharge port is a through hole with a rectangular cross section, and the width of the rectangular through hole is smaller than the outer diameter of the valve core.

[0008] Furthermore, a retaining ring is arranged between the valve seat and the water supply pipe, and the periphery of the retaining ring is fixedly connected to the valve cavity.

[0009] Furthermore, the angle between the axis of the valve cavity and the horizontal direction is 5-85 degrees.

[0010] Furthermore, a water pipe interface is provided on the valve cover, the water pipe interface is communicated with the discharge port of the valve cavity, and one end of the down pipe is threadedly connected to the water pipe interface.

[0011] Furthermore, an elastic seat is arranged at one end of the valve cavity close to the water pipe interface, and the elastic seat includes a sheath, which is fixedly installed in the valve cavity. A spring is arranged in the sheath, and a top cover is installed at one end of the spring, and the periphery of the valve core can abut against one end of the top cover.

[0012] Furthermore, an annular surfacing is provided on the inner edge of one end of the valve seat, and the cross section of the annular surfacing is arc-shaped, and the periphery of the valve core can be sealed and connected to the inner ring of the annular surfacing.

[0013] Compared with the prior art, the low-resistance one-way valve described in the utility model has the following beneficial effects: the spherical valve core can roll obliquely in the valve cavity under the influence of gravity. When there is no pressure difference between the upstream and downstream pipelines of the valve body, the valve core and the valve seat are combined by gravity. When the medium pressure in the upstream water pipe is high, the valve core is pushed and moved by the medium, and the valve cavity passage is opened. When the medium pressure in the downstream water pipe is high, the valve core is pushed and squeezed to the valve seat by the medium, and the valve cavity passage is closed. The valve cavity is arranged along a horizontal oblique direction, and the valve body can be installed horizontally or vertically, meeting the low-resistance one-way cut-off requirements under multiple working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0015] Figure 1 This is a structural schematic diagram of a low resistance one-way valve according to an embodiment of the utility model;

[0016] Figure 2 This is a schematic diagram of the explosion structure of a low-resistance one-way valve according to an embodiment of the utility model;

[0017] Figure 3 This is a schematic cross-sectional structure diagram of a low-resistance one-way valve according to an embodiment of the utility model;

[0018] Figure 4 It is a cross-sectional schematic diagram of the valve seat described in the embodiment of the utility model.

[0019] Description of reference numerals:

[0020] 1-valve body; 11-feed port; 12-discharge port; 13-valve chamber; 2-valve cover; 21-water pipe interface; 3-valve core; 4-valve seat; 41-annular surfacing; 5-retaining ring; 6-elastic seat; 61-sheath; 62-spring; 63-top cover; 7-upper water pipe. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0022] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0024] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0025] like Figure 1-Figure 4As shown, a low resistance one-way valve comprises a valve body 1, a valve cavity 13 is arranged in the valve body 1, and the valve cavity 13 is a through groove with a circular cross section, the axis of the valve cavity 13 is arranged in a horizontal oblique direction, a discharge port 12 and a feed port 11 are respectively arranged at both ends of the valve cavity 13, the feed port 11 is threadedly connected to the water supply pipe 7, the discharge port 12 is covered with a valve cover 2, a valve core 3 is arranged in the valve cavity 13, and the valve core 3 can roll in the valve cavity 13, a valve seat 4 is arranged between the valve core 3 and the water supply pipe 7, and the periphery of the valve core 3 can be sealed and connected to one end of the valve seat 4, the valve core 3 is used to open and close the passage of the valve cavity 13, and the valve core 3 is made of steel or rubber The material is a spherical ball, the inner diameter of the valve cavity 13 matches the outer diameter of the valve core 3, and the spherical valve core 3 can roll obliquely in the valve cavity 13 under the force of gravity. When there is no pressure difference between the upstream and downstream pipelines of the valve body 1, the valve core 3 and the valve seat 4 are combined by gravity. When the medium pressure in the upstream water pipe 7 is high, the valve core 3 is pushed by the medium to move, and the passage of the valve cavity 13 is opened. When the medium pressure in the downstream water pipe is high, the valve core 3 is pushed by the medium to squeeze to the valve seat 4, and the passage of the valve cavity 13 is closed. The valve cavity 13 is arranged along the horizontal oblique direction, and the valve body 1 can be installed horizontally or vertically, which meets the low-resistance one-way cut-off requirements under multiple working conditions.

[0026] A water pipe interface 21 is provided on the valve cover 2, which is connected to the discharge port 12 of the valve cavity 13, and one end of the downpipe is threadedly connected to the water pipe interface 21. The discharge port 12 is a through hole with a rectangular cross-section. The width of the rectangular through hole is smaller than the outer diameter of the valve core 3, and the length of the rectangle is not less than twice the outer diameter of the valve core 3, so that the valve core 3 can meet the conduction of the valve cavity 13 when it is slightly moved, and when the medium pressure of the upper water pipe 7 is continuously greater than that of the downpipe, the valve core 3 is pushed away from the valve seat 4 by the medium, and the opening of the discharge port 12 gradually increases until the valve core 3 abuts against the side wall of the valve cavity 13 and cannot move. At this time, the discharge port 12 has a maximum opening.

[0027] like Figure 3 As shown, a retaining ring 5 is arranged between the valve seat 4 and the water supply pipe 7, and the outer periphery of the retaining ring 5 is fixedly connected to the valve cavity 13. The retaining ring 5 is used to limit the extreme position of the valve seat 4 and the water supply pipe 7 installed in the valve body 1 to prevent the valve seat 4 and the water supply pipe 7 from interfering with each other.

[0028] like Figure 4 As shown, the axis of the valve cavity 13 is provided with a positive angle with the horizontal direction, and the angle range is 5-85 degrees. The angle in this embodiment is A, and A is 30 degrees, so that both vertical installation and horizontal installation can realize that the valve core 3 can slide to one end of the valve seat 4.

[0029] An elastic seat 6 is provided at one end of the valve cavity 13 close to the water pipe interface 21. The elastic seat 6 includes a sheath 61, which is fixedly installed in the valve cavity 13. A spring 62 is provided in the sheath 61, and a top cover 63 is installed at one end of the spring 62. The periphery of the valve core 3 can abut against one end of the top cover 63. When the medium pressure in the upper water pipe 7 is greater than the medium pressure in the lower water pipe, the medium pushes the valve core 3 to move continuously in the valve cavity 13. When the discharge port 12 is opened to the maximum, the valve core 3 compresses the spring 62 through the top cover 63. When the upper water pipe 7 is suddenly pressurized, the spring 62 can provide a reset elastic force for the valve core 3 so that the valve core 3 can be quickly reset to improve the cut-off efficiency. Figure 3 As shown, an annular build-up weld 41 is provided at the inner edge of one end of the valve seat 4, and the cross section of the annular build-up weld 41 is arc-shaped, and the periphery of the valve core 3 can be sealed and connected to the inner ring of the annular build-up weld 41 to improve the sealing performance of this part.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low resistance one-way valve, characterized in that: The invention comprises a valve body (1), wherein a valve cavity (13) is arranged in the valve body (1), and the valve cavity (13) is a through groove with a circular cross section, the axis of the valve cavity (13) is arranged in a horizontal oblique direction, and a discharge port (12) and a feed port (11) are respectively arranged at two ends of the valve cavity (13), the feed port (11) is threadedly connected to a water supply pipe (7), and a valve cover (2) is arranged on the discharge port (12), a valve core (3) is arranged in the valve cavity (13), and the valve core (3) can roll in the valve cavity (13), a valve seat (4) is arranged between the valve core (3) and the water supply pipe (7), and the outer periphery of the valve core (3) can be sealed and connected to one end of the valve seat (4), and the valve core (3) is used to open and close the passage of the valve cavity (13).

2. A low resistance one-way valve according to claim 1, characterized in that: The valve core (3) is a round ball made of steel or rubber.

3. A low resistance one-way valve according to claim 1, characterized in that: The discharge port (12) is a through hole with a rectangular cross section, and the width of the rectangular through hole is smaller than the outer diameter of the valve core (3).

4. A low resistance one-way valve according to claim 1, characterized in that: A retaining ring (5) is arranged between the valve seat (4) and the water supply pipe (7), and the periphery of the retaining ring (5) is fixedly connected to the valve cavity (13).

5. A low resistance one-way valve according to claim 1, characterized in that: The included angle between the axis of the valve cavity (13) and the horizontal direction is 5-85 degrees.

6. A low resistance one-way valve according to claim 1, characterized in that: The valve cover (2) is provided with a water pipe interface (21), the water pipe interface (21) is connected to the discharge port (12) of the valve cavity (13), and one end of the down pipe is threadedly connected to the water pipe interface (21).

7. A low resistance one-way valve according to claim 6, characterized in that: An elastic seat (6) is arranged at one end of the valve cavity (13) close to the water pipe interface (21), and the elastic seat (6) comprises a sheath (61), which is fixedly installed in the valve cavity (13), a spring (62) is arranged in the sheath (61), and a top cover (63) is installed at one end of the spring (62), and the periphery of the valve core (3) can abut against one end of the top cover (63).

8. A low resistance one-way valve according to claim 1, characterized in that: An annular cladding (41) is provided on the inner edge of one end of the valve seat (4), and the cross section of the annular cladding (41) is arc-shaped. The periphery of the valve core (3) can be sealed and connected to the inner ring of the annular cladding (41).

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