CN216344116U

CN216344116U - Check valve

Info

Publication number: CN216344116U
Application number: CN202122740868.3U
Authority: CN
Inventors: 苏宝基
Original assignee: Guangdong Shinuo Sanitary Ware Technology Co ltd
Current assignee: Guangdong Shinuo Sanitary Ware Technology Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-04-19
Anticipated expiration: 2031-11-10

Abstract

The utility model discloses a check valve which comprises a switch valve, wherein the left side of the switch valve is connected with the check valve, and the right side of the switch valve is connected with a water supply system; the filter screen fixing sleeve is connected to the bottom end of the switch valve, a filter screen is connected to the inner side of the filter screen fixing sleeve, and a gland is sleeved on the outer sides of the filter screen fixing sleeve and the filter screen; the plastic adjusting rod is connected to the top end of the switch valve, a second O-shaped ring is arranged at the joint of the plastic adjusting rod and the switch valve, a handle is connected to the outside of the plastic adjusting rod, and the plastic adjusting rod is connected with the handle through a sealing nut; the utility model effectively avoids impurities from entering water-using equipment in the house through the arranged detachable filter screen and the check valve with one-way function, has good protection effect, and can prevent sewage in the house pipeline from reversely entering a water supply system to pollute a water supply source.

Description

Check valve

Technical Field

The utility model relates to the technical field of check valves, in particular to a check valve.

Background

The check valve is a valve with a circular valve clack and acts by self weight and medium pressure to block the medium from flowing backwards. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type. The lift check valve is similar in structure to the stop valve and only lacks a valve rod that drives the valve flap. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards. Swing check valves have a flap that is tilted and can pivot, and operate on a similar principle to lift check valves. The check valve is commonly used as a bottom valve of a water pumping device and can prevent the backflow of water. The check valve and the stop valve are combined for use, and the safety isolation effect can be achieved. The defects are that the resistance is large, and the sealing performance is poor when the valve is closed;

the existing switch valve generally only has a filtering function, and when the filter screen needs to be cleaned, the whole water supply system needs to be closed, so that a check valve is provided.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model provides the check valve, through the arrangement of the detachable filter screen and the check valve with the one-way function, impurities are effectively prevented from entering water using equipment in a home, the protection effect is good, and sewage in a home pipeline can be prevented from reversely entering a water supply system to pollute a water supply source.

In order to solve the technical problems, the utility model provides the following technical scheme: a check valve, said check valve comprising

The left side of the switch valve is connected with a check valve, and the right side of the switch valve is connected with a water supply system;

the filter screen fixing sleeve is connected to the bottom end of the switch valve, a filter screen is connected to the inner side of the filter screen fixing sleeve, and a gland is sleeved on the outer sides of the filter screen fixing sleeve and the filter screen;

the plastic adjusting rod is connected to the top end of the switch valve, a second O-shaped ring is arranged at the joint of the plastic adjusting rod and the switch valve, a handle is connected to the outside of the plastic adjusting rod, the plastic adjusting rod is connected with the handle through a sealing nut, and a third O-shaped ring is arranged at the joint of the plastic adjusting rod and the sealing nut.

Preferably, a first O-shaped ring is arranged at the joint of the gland and the switch valve, and a nameplate is arranged on the surface of the top end of the handle.

Preferably, the handle surface is provided with a bump, and the nameplate is made of an aluminum alloy material.

Preferably, the plastic adjusting rod is of a cylindrical structure, and reinforcing ribs are arranged on the surface of the plastic adjusting rod at equal intervals.

Preferably, the filter screen is of an annular structure, and is made of stainless steel.

Preferably, the filter screen fixing sleeve is of an annular structure, and the inner side surface of the filter screen fixing sleeve is provided with clamping blocks at equal intervals

Compared with the prior art, the utility model can achieve the following beneficial effects:

the utility model effectively avoids impurities from entering water-using equipment in the house through the arranged detachable filter screen and the check valve with one-way function, has good protection effect, and can prevent sewage in the house pipeline from reversely entering a water supply system to pollute a water supply source.

Drawings

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

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is a schematic illustration of an explosive structure according to the present invention;

wherein: 1. an on-off valve; 2. a check valve; 3. a first O-ring; 4. a filter screen fixing sleeve; 5. a filter screen; 6. a gland; 7. a second O-ring; 8. a plastic adjusting rod; 9. a third O-ring; 10. a seal nut; 11. a handle; 12. a nameplate.

Detailed Description

The check valve of the present invention will be further described with reference to the drawings and the embodiments.

Example (b):

as shown in fig. 1 to 3, a check valve of the present embodiment includes: the left side of the switch valve 1 is connected with a check valve 2, and the right side of the switch valve 1 is connected with a water supply system; the filter screen fixing sleeve 4 is connected to the bottom end of the switch valve 1, the inner side of the filter screen fixing sleeve 4 is connected with the filter screen 5, and the outer sides of the filter screen fixing sleeve 4 and the filter screen 5 are sleeved with the pressing cover 6; the plastic adjusting rod 8 is connected to the top end of the switch valve 1, a second O-shaped ring 7 is arranged at the joint of the plastic adjusting rod 8 and the switch valve 1, a handle 11 is connected to the outside of the plastic adjusting rod 8, the plastic adjusting rod 8 and the handle 11 are connected through a sealing nut 10, and a third O-shaped ring 9 is arranged at the joint of the plastic adjusting rod 8 and the sealing nut 10; a first O-shaped ring 3 is arranged at the joint of the gland 6 and the switch valve 1, and a nameplate 12 is arranged on the surface of the top end of the handle 11;

when the water supply device is used, the switch valve 1 can be switched on and off through the handle 11, when the water supply device is closed, the filter screen fixing sleeve 4 and the filter screen 5 can be detached for cleaning, the whole water supply system does not need to be closed, and water flows into a household after being treated by the filter screen 5 at ordinary times; according to the utility model, through the arrangement of the detachable filter screen and the check valve 2 with a one-way function, impurities are effectively prevented from entering water-using equipment in a home, the protection effect is good, and the sewage in a home pipeline can be prevented from reversely entering a water supply system to pollute a water supply source.

In other embodiments, as shown in fig. 1-3, the present embodiment discloses that the handle 11 has a protrusion on the surface thereof, and the nameplate 12 is made of an aluminum alloy material; through being provided with the lug on 11 surfaces of handle, be favorable to the increase friction, facilitate the use more, and set data plate 12 to the aluminum alloy material, the difficult corrosion is rusted, is convenient for look over the model.

In other embodiments, as shown in fig. 3, the plastic adjusting rod 8 is a cylindrical structure, and the surface of the plastic adjusting rod 8 is provided with reinforcing ribs at equal intervals; the reinforcing ribs are arranged on the surface of the plastic adjusting rod 8 at equal intervals, so that the problem of bending and breaking is not easy to occur during use, and the durability of the plastic adjusting rod is improved.

In other embodiments, as shown in fig. 3, the filter screen 5 is an annular structure, and the filter screen 5 is made of stainless steel; through setting filter screen 5 to stainless steel, be favorable to improving its corrosion resistance, increase life.

In other embodiments, as shown in fig. 3, the filter screen fixing sleeve 4 is an annular structure, and the inner side surface of the filter screen fixing sleeve 4 is provided with the fastening blocks at equal intervals; set up annular structure through fixing cover 4 with the filter screen for be connected more with ooff valve 1 and match, and be provided with the fixture block at the fixed cover 4 inboard surface equidistance of filter screen, make filter screen 5 fasten more with being connected of the fixed cover 4 of filter screen, prevent that filter screen 5 from being leaded to shifting by the rivers impact force, improved stability.

The embodiments of the present invention have been described in detail with reference to the drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.

Claims

1. A check valve, characterized by: the check valve comprises

The water supply system comprises a switch valve (1), wherein a check valve (2) is connected to the left side of the switch valve (1), and the right side of the switch valve (1) is connected with a water supply system;

the filter screen fixing sleeve (4) is connected to the bottom end of the switch valve (1), the inner side of the filter screen fixing sleeve (4) is connected with a filter screen (5), and the outer sides of the filter screen fixing sleeve (4) and the filter screen (5) are sleeved with a gland (6);

plastics are adjusted pole (8), plastics are adjusted pole (8) and are connected in ooff valve (1) top, just the junction that plastics were adjusted pole (8) and ooff valve (1) is provided with second O type circle (7), plastics are adjusted pole (8) outer joint and are had handle (11), just plastics are adjusted pole (8) and are connected through gland nut (10) with handle (11), the junction that plastics were adjusted pole (8) and gland nut (10) is provided with third O type circle (9).

2. A check valve as claimed in claim 1, wherein: the connection part of the gland (6) and the switch valve (1) is provided with a first O-shaped ring (3), and the top end surface of the handle (11) is provided with a nameplate (12).

3. A check valve as claimed in claim 2, wherein: the surface of the handle (11) is provided with a convex block, and the nameplate (12) is made of aluminum alloy.

4. A check valve as claimed in claim 1, wherein: the plastic adjusting rod (8) is of a cylindrical structure, and reinforcing ribs are arranged on the surface of the plastic adjusting rod (8) at equal intervals.

5. A check valve as claimed in claim 1, wherein: the filter screen (5) is of an annular structure, and the filter screen (5) is made of stainless steel.

6. A check valve as claimed in claim 1, wherein: the filter screen fixing sleeve (4) is of an annular structure, and clamping blocks are arranged on the inner side surface of the filter screen fixing sleeve (4) at equal intervals.