CN217977569U - Water stop valve - Google Patents

Abstract

The utility model discloses a water stop valve, include: the water inlet and the water outlet are respectively communicated with the valve cavity, and the inner wall of the valve cavity where the water inlet is located is a first water sealing surface; the base is arranged at the bottom of the valve shell; the valve rod is positioned in the valve cavity, the valve rod is installed on the base and slides towards the water inlet, a second water sealing surface made of plastic or rubber materials is arranged on the end face of the top of the valve rod, and the second water sealing surface can be mutually abutted with the first water sealing surface to seal the water inlet; the elastic piece has an elastic acting force for the valve rod to enable the second water sealing surface to be tightly abutted against the first water sealing surface; during the assembly, need not to seal the surface installation like structures such as sealing washer at first, after the valve rod installation, the water-stop function can be realized to the second, overall structure, and assembly efficiency is very high, and sealed effect is fine.

Description

Water stop valve

Technical Field

The utility model relates to a sealing device, in particular to sealing valve.

Background

As shown in fig. 7, the existing water stop valve structure used in the filter and the matched water passage plate adopts interference compression between the matching of the water stop valve rod and the inner sealing ring and the water stop valve casing, which has high cost, complex structure and poor reliability. Some water stop valves are sealed by a sealing ring between the top end surface of the valve rod and the valve body, are limited by the size of the space inside the valve body, and are inconvenient for installing the sealing ring.

SUMMERY OF THE UTILITY MODEL

The present invention aims to solve at least one of the above-mentioned technical problems in the related art to a certain extent. Therefore, the utility model provides a water stop valve.

In order to achieve the above purpose, the technical scheme of the utility model is as follows:

according to the utility model discloses a stagnant water valve of first aspect embodiment includes:

the valve comprises a valve shell, a valve cavity is arranged in the valve shell, a water inlet and a water outlet which are communicated with the valve cavity are respectively arranged at the upper part and the lower part of the valve shell, and the inner wall of the valve cavity where the water inlet is located is a first water sealing surface;

a base mounted at the bottom of the valve housing;

the valve rod is positioned in the valve cavity, the valve rod is installed on the base and slides towards the water inlet, a second water sealing surface made of plastic or rubber materials is arranged on the end face of the top of the valve rod, and the second water sealing surface can be abutted to the first water sealing surface to seal the water inlet;

and the elastic piece has an elastic acting force for enabling the second water sealing surface to be tightly abutted against the first water sealing surface for the valve rod.

According to the utility model discloses stagnant water valve has following beneficial effect at least: during the assembly, need not to seal the surface installation like structures such as sealing washer at first, after the valve rod installation, the water-stop function can be realized to the second, overall structure, and assembly efficiency is very high, and sealed effect is fine.

According to some embodiments of the invention, the second sealing surface is a second sealing surface.

According to some embodiments of the invention, the valve rod is in contact with the first surface of water sealing at the part of the top end face is the second surface of water sealing.

According to some embodiments of the utility model, whole the valve rod constitutes for plastics or rubber material.

According to the utility model discloses a some embodiments, the vertical cross-section of valve rod is T shape, the base is equipped with the guide post of vertical extension, be equipped with the guiding hole in the guide post, the coaxial slip grafting in lower part of valve rod is in the guiding hole.

According to some embodiments of the utility model, the elastic component is the spring, the elastic component cup joints the guide post or the lower part of valve rod, the upper end of elastic component with the upper portion butt of valve rod, the lower extreme of elastic component with the base butt.

According to some embodiments of the utility model, the delivery port is seted up the bottom of valve casing, the pedestal mounting be in delivery port department, the base is equipped with the fretwork hole, the valve pocket passes through fretwork hole and external intercommunication.

According to some embodiments of the present invention, the valve housing outer wall is provided with a sealing ring.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is a schematic view of the assembly structure of the present invention;

FIG. 2 is a sectional view of the internal structure of FIG. 1;

FIG. 3 is a cross-sectional view of the valve housing;

FIG. 4 is a schematic view of one of the valve stems;

FIG. 5 is a schematic view of another configuration of the valve stem;

FIG. 6 is a schematic view of a base structure;

fig. 7 is a schematic diagram of a prior art structure.

Reference numerals: a valve housing 100; a valve cavity 101; a water inlet 102; a water outlet 103; a first water shut-off surface 104; a base 200; the guide posts 210; a guide hole 211; a hollowed-out hole 220; a valve stem 300; a second water seal surface 301; an elastic member 400; and a seal ring 500.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

The present invention relates to a water stop valve, as shown in fig. 1 and 2, which comprises a valve housing 100, a base 200, a valve rod 300 and an elastic member 400.

As shown in fig. 3, in this embodiment, the valve housing 100 is cylindrical, the valve cavity 101 is formed in the valve housing 100, and the valve housing 100 may be made of plastic. A water inlet 102 is opened at the top of the valve housing 100, and the water inlet 102 is communicated with the valve chamber 101. The aperture of the water inlet 102 is smaller than the inner diameter of the valve chamber 101, as shown in fig. 2, when viewed from the sectional view direction of the front view direction, the water inlet 102 is located at the top of the valve chamber 101, the water inlet 102 and the valve chamber 101 form a "convex" shape, the inner wall of the top of the valve chamber 101 is a first water sealing surface 104, and the first water sealing surface 104 faces downward and is a plane. The lower part of the valve casing 100 is provided with a water outlet 103, the water outlet 103 is communicated with the valve cavity 101, the water outlet 103 can be arranged on the circumferential side wall of the valve casing 100, or the water outlet 103 can be arranged at the bottom of the valve casing 100. The base 200 is installed at the bottom of the valve housing 100, and may be opened at the bottom of the valve housing 100, and the base 200 is installed at the bottom opening of the valve housing 100 by other fixing methods such as clamping. In this embodiment, as shown in fig. 2 and fig. 6, the seat body of the base 200 is disc-shaped, the base 200 is provided with a plurality of hollow holes 220, the bottom opening of the valve housing 100 is used as the water outlet 103, the base 200 is fixed at the water outlet 103, and the valve cavity 101 is communicated with the outside through the hollow holes 220 of the base 200, which is equivalent to the hollow holes 220 functioning as the water outlet 103. The valve rod 300 is positioned in the valve cavity 101, the valve rod 300 is vertically inserted into the base 200, and the valve rod 300 moves up and down towards the water outlet 103 relative to the base 200. The top end surface of the valve stem 300 defines a second water shut-off surface 301. The second water sealing surface 301 is opposite to the first water sealing surface 104, and the outer diameter of the second water sealing surface 301 is larger than that of the water outlet 103. When the valve rod 300 moves upwards, the second water sealing surface 301 abuts on the first water sealing surface 104 to seal the water inlet 102. The second water sealing surface 301 is made of plastic or rubber material, and preferably, the plastic is soft plastic, and may also be made of rubber and plastic material. The second water sealing surface 301 utilizes the sealing function of plastics or rubber for the contact part of the first water sealing surface 104 and the second water sealing surface 301 can be closely attached, and a good water sealing effect is achieved. The elastic member 400 is installed between the base 200 and the valve stem 300, and the elastic member 400 has an elastic force pushing upward on the valve stem 300, so that the valve stem 300 has an upward moving tendency, and the valve stem 300 maintains a state that the second water sealing surface 301 is tightly abutted against the first water sealing surface 104 in a normal state. In operation, when external water impacts the top of the valve rod 300 through the water inlet 102 and the water pressure is greater than the elastic force of the elastic member 400 on the upward movement of the valve rod 300, the valve rod 300 moves downward to open the water inlet 102, and the elastic member 400 compresses. The water flows through the water inlet 102 and the valve cavity 101 and is discharged from the water outlet 103. After water inflow is stopped, the elastic member 400 elastically resets, and the second water sealing surface 301 covers the water inlet 102. During the assembly of the water stop valve, structures such as a sealing ring and the like do not need to be installed on the first water sealing surface 104, and after the valve rod 300 is installed, the water sealing function can be realized on the second water sealing surface 301.

In some embodiments of the present invention, the valve rod 300 may be provided with the second water sealing surface 301 in various forms. First, as shown in fig. 4, the entire top end surface of the valve rod 300 is a second water sealing surface 301, and the second water sealing surface 301 may be a separate plastic or rubber plate, and is fixed on the top of the valve rod 300 by glue or other means. Secondly, as shown in fig. 5, the part of the top end surface of the valve rod 300 contacting the first water sealing surface 104 is a second water sealing surface 301, and the second water sealing surface 301 is in a ring shape and is fixed on the top of the valve rod 300 by glue or other methods. Thirdly, as shown in fig. 2, the valve rod 300 is made of plastic or rubber as a whole, and the top end surface of the valve rod 300 forms a second water sealing surface 301 when the valve rod 300 is molded. The second water sealing surface 301 may be formed in, but not limited to, the above three ways. The second water sealing surface 301 and the valve rod 300 are integrated into a whole, or the valve rod 300 naturally forms the second water sealing surface 301, and the general assembly process of the water stop valve is very convenient.

In some embodiments of the present invention, as shown in fig. 2, the vertical section of the valve rod 300 is T-shaped when viewed from the front, and the upper portion of the valve rod 300 is disc-shaped and the lower portion is rod-shaped. A vertically extending guiding column 210 is disposed in the middle of the base 200, and the guiding column 210 may extend toward the valve cavity 101. A guide hole 211 is arranged in the guide column 210, the guide hole 211 is vertically arranged, and two ends of the guide hole are open. The lower portion of the valve stem 300 is coaxially inserted into the guide hole 211, and the valve stem 300 slides up and down along the guide hole 211. According to the height of the upper end of the guide post 210, the upper portion of the valve rod 300 can be abutted against the fixed end of the guide post 210 when moving downward, and the downward movement stroke of the valve rod 300 can be limited by the top of the guide post 210. Further, the elastic member 400 is a spring, and the elastic member 400 is sleeved on the lower rod body of the valve rod 300 or sleeved on the guide post 210. The elastic member 400 has an upper end abutting against the valve stem 300 and a lower end abutting against the base 200. Alternatively, the bottom of the guide hole 211 may be set to be in a tapered shape, the elastic member 400 is installed in the guide hole 211, the valve rod 300 is inserted into the guide hole 211, and the bottom end of the valve rod 300 abuts against the elastic member 400 in the guide hole 211.

Further, as shown in fig. 1 and 3, a groove is formed in the circumferential wall of the valve housing 100 in the circumferential direction, and a seal ring 500 is fitted over the groove. When the water stop valve is attached to a filter, a water passage plate, or the like, the outer peripheral wall of the water stop valve is sealed with the attachment position of the filter or the water passage plate by the seal ring 500.

In the description herein, references to the description of "some specific embodiments" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (8)

1. A water stop valve, comprising:

the water sealing valve comprises a valve casing (100), wherein a valve cavity (101) is formed inside the valve casing (100), a water inlet (102) and a water outlet (103) which are communicated with the valve cavity (101) are respectively formed in the upper portion and the lower portion of the valve casing (100), and the inner wall of the valve cavity (101) where the water inlet (102) is located is a first water sealing surface (104);

a base (200), wherein the base (200) is installed at the bottom of the valve housing (100);

the valve rod (300) is positioned in the valve cavity (101), the valve rod (300) is installed on the base (200) and slides towards the water inlet (102), a second water sealing surface (301) made of plastic or rubber is arranged on the top end face of the valve rod (300), and the second water sealing surface (301) can be abutted to the first water sealing surface (104) to seal and cover the water inlet (102);

and an elastic member (400), wherein the elastic member (400) has an elastic acting force for enabling the second water sealing surface (301) to be tightly abutted against the first water sealing surface (104) on the valve rod (300).

2. A stop valve as defined in claim 1, wherein: the whole top end face of the valve rod (300) is the second water sealing surface (301).

3. A stop valve as defined in claim 1, wherein: the part of the top end surface of the valve rod (300) contacting with the first water sealing surface (104) is the second water sealing surface (301).

4. A stop valve as defined in claim 1, wherein: the whole valve rod (300) is made of plastic or rubber.

5. A water stop valve as claimed in claim 1, wherein: the vertical section of the valve rod (300) is in a T shape, the base (200) is provided with a guide post (210) which vertically extends, a guide hole (211) is formed in the guide post (210), and the lower part of the valve rod (300) is coaxially inserted into the guide hole (211) in a sliding mode.

6. A stop valve as defined in claim 5, wherein: the elastic piece (400) is a spring, the elastic piece (400) is sleeved on the lower portion of the guide column (210) or the valve rod (300), the upper end of the elastic piece (400) is abutted with the upper portion of the valve rod (300), and the lower end of the elastic piece (400) is abutted with the base (200).

7. A stop valve as defined in claim 1, wherein: the utility model discloses a valve, including delivery port (103), valve chamber (101), valve casing (100), base (200) are established delivery port (103) are seted up the bottom of valve casing (100), install base (200) delivery port (103) department, base (200) are equipped with fretwork hole (220), valve pocket (101) are passed through fretwork hole (220) and external intercommunication.

8. A stop valve as defined in claim 1, wherein: and a sealing ring (500) is arranged on the outer wall of the valve shell (100).

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