A liquid check valve

Abstract

A liquid check valve comprises a valve body, a valve core body, an O-shaped silica gel valve core, a spring and a valve cover, the valve body comprises a valve connecting disc, a hexagonal tool part, an internal thread connecting cavity, a valve core cavity, a head cavity and a liquid inlet channel, the valve core body comprises a spring cavity, a liquid inlet cavity, a radial hole, a cylindrical seat part, a cylindrical body part and a conical frustum head, the O-shaped silica gel valve core is arranged in an annular sealing groove, the cylindrical seat part and the valve core cavity are in sliding fit, the conical frustum head and the head cavity are in fit stop position, the O-shaped silica gel valve core is in fit with the valve core seat, the external thread part is screwed with the internal thread connecting cavity, the end of the valve cover is in fit with the end of the internal thread connecting cavity, the end of the cylindrical seat part is in fit with the end of the valve cover, and the spring is respectively inserted into the spring cavity and the spring seat cavity. When the valve is in conduction, the end of the valve core body is in fit and sealing with the external thread part of the valve cover, and the end of the external thread part and the closed end of the internal thread connecting cavity are sealed, so that the sealing performance is improved.

Description

Technical Field

[0001] This utility model relates to a one-way valve, and more particularly to a one-way valve for a liquid pipeline. Background Technology

[0002] The existing technology, Chinese patent 202023017012.5, discloses a one-way valve device for seawater desalination, including a valve seat, a valve core disposed within the valve seat, a valve cover connected to the valve seat, a spring with one end connected to the valve cover and the other end connected to the valve core, and a sealing ring disposed on the valve core and cooperating with the valve seat to achieve a seal. The problem is that there is a potential for water leakage at the joint between the valve body and the valve core. Utility Model Content

[0003] The purpose of this utility model is to provide a liquid check valve, which features a firm connection between the valve body and the valve cover and good sealing performance.

[0004] This utility model is implemented as follows: a liquid check valve, characterized in that it includes a valve body, a valve core body, an O-ring silicone valve core, a spring, and a valve cover.

[0005] The valve body includes a valve connecting plate, a hexagonal tool section, an internal threaded connecting cavity, a valve core cavity, a head cavity, and an inlet channel. The junction of the head cavity and the valve core cavity forms the valve core seat.

[0006] The valve core body includes a spring cavity, an inlet cavity, a radial hole, a cylindrical seat, a cylindrical body, and a frustum-shaped head. The frustum-shaped head is provided with an annular sealing groove; the radial hole is provided on the cylindrical body.

[0007] The valve cover includes a spring seat cavity, a liquid outlet channel, a hexagonal cover portion, an external thread portion, and a cover connecting plate;

[0008] The O-ring silicone valve core is located in the annular sealing groove. The cylindrical seat and the valve core cavity slide together, and the truncated cone head and the head cavity stop together. The O-ring silicone valve core mates with the valve core seat. The external thread and the internal thread connecting cavity are screwed together, and the end of the valve cover fits against the end of the internal thread connecting cavity. The springs are inserted into the spring cavity and the spring seat cavity respectively.

[0009] The liquid check valve is characterized in that: the top plate of the internal threaded cavity is provided with an annular groove, and a sealing ring is provided in the annular groove.

[0010] The liquid check valve is characterized in that the spring seat cavity is in the shape of an inverted frustum cone, and the top round end is connected to the liquid outlet channel.

[0011] The liquid check valve is characterized in that the diameter of the spring cavity is smaller than the diameter of the spring seat cavity.

[0012] This utility model discloses a liquid check valve. Due to its structure, when the valve is turned on, the end of the valve core body fits and seals with the external thread of the valve cover, and the end of the external thread and the closed end of the internal thread connection cavity are sealed, thus improving the sealing performance. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the present invention.

[0014] Figure 2 This is a perspective view of the present invention.

[0015] Figure 3 This is one of the exploded perspective views of this utility model.

[0016] Figure 4 This is the second exploded perspective view of this utility model. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] like Figure 1 As shown, a liquid check valve includes a valve body 1, a valve core body 2, an O-ring silicone valve core 3, a spring 4, and a valve cover 5.

[0020] The valve body 1 includes a valve connecting plate 11, a hexagonal tool part 12, an internal threaded connecting cavity 13, a valve core cavity 14, a head cavity 15, and an inlet channel 16. The junction of the head cavity 15 and the valve core cavity 14 forms a valve core seat.

[0021] The valve core body 2 includes a spring cavity 21, an inlet cavity 22, a radial hole 23, a cylindrical seat 24, a cylindrical body 25, and a frustum-shaped head 26. The frustum-shaped head 26 is provided with an annular sealing groove. The radial hole 23 is provided on the cylindrical body 25. The diameter of the cylindrical body 25 is smaller than the diameter of the cylindrical seat 24.

[0022] The valve cover 5 includes a spring seat cavity 51, a liquid outlet channel 52, a hexagonal cover portion 53, an external thread portion 54, and a cover connecting plate 55;

[0023] The O-ring silicone valve core 3 is located in the annular sealing groove on the frustoconical head 26. The cylindrical seat 24 and the valve core cavity 14 slide and are liquid-sealed. The frustoconical head 26 and the head cavity 15 are engaged and stopped. The O-ring silicone valve core 3 is engaged with the valve core seat. The external thread 54 and the internal thread connecting cavity 13 are screwed together. The end of the valve cover 5 is fitted and sealed with the end of the internal thread connecting cavity 13. The end of the cylindrical seat 24 is engaged with the end of the valve cover 5. The spring 4 is inserted into the spring cavity 21 and the spring seat cavity 51 respectively. During operation, the end of the cylindrical seat 24 is engaged and sealed with the end of the valve cover 5. The liquid enters the gap between the valve core cavity, the cylindrical body 25 and the frustoconical head 26 through the inlet channel and the head cavity, then enters the spring seat cavity 51 through the radial hole 23, the inlet cavity 22 and the spring cavity 21, and finally flows out through the outlet channel.

[0024] As a further improvement of this utility model: the top plate of the internal threaded connection cavity 13 is provided with an annular groove 131, and a sealing ring 6 is provided in the annular groove 131. This structure improves the sealing performance.

[0025] As a further improvement of this utility model: the spring seat cavity 51 is in the shape of an inverted frustum cone, and the top round end is connected to the liquid outlet channel 52.

[0026] The diameter of the spring cavity 21 is smaller than the diameter of the spring seat cavity 51.

[0027] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A liquid check valve, characterized in that: Includes valve body, valve core body, O-ring silicone valve core, spring and valve cover. The valve body includes a valve connecting plate, a hexagonal tool section, an internal threaded connecting cavity, a valve core cavity, a head cavity, and an inlet channel. The junction of the head cavity and the valve core cavity forms the valve core seat. The valve core body includes a spring cavity, an inlet cavity, a radial hole, a cylindrical seat, a cylindrical body, and a frustum-shaped head. The frustum-shaped head is provided with an annular sealing groove; the radial hole is provided on the cylindrical body. The valve cover includes a spring seat cavity, a liquid outlet channel, a hexagonal cover portion, an external thread portion, and a cover connecting plate; The O-shaped silicone valve core is located in the annular sealing groove. The cylindrical seat and the valve core cavity slide together, and the truncated cone head and the head cavity stop together. The O-shaped silicone valve core mates with the valve core seat. The external thread and the internal thread connecting cavity are screwed together, and the end of the valve cover fits against the end of the internal thread connecting cavity. The end of the cylindrical seat mates with the end of the valve cover, and the springs are inserted into the spring cavity and the spring seat cavity respectively.

2. A liquid check valve according to claim 1, characterized in that: The top plate of the internal threaded connection cavity is provided with an annular groove, and a sealing ring is provided in the annular groove.

3. A liquid check valve according to claim 1, characterized in that: The spring seat cavity is shaped like an inverted frustum, with its top end connected to the liquid outlet channel.

4. A liquid check valve according to claim 1, characterized in that: The diameter of the spring cavity is smaller than the diameter of the spring seat cavity.

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