CN221121106U

CN221121106U - Backflow prevention valve

Info

Publication number: CN221121106U
Application number: CN202322595700.7U
Authority: CN
Inventors: 黄泗兴
Original assignee: Nantong Nanyou Automation Valve Co ltd
Current assignee: Nantong Nanyou Automation Valve Co ltd
Priority date: 2023-09-25
Filing date: 2023-09-25
Publication date: 2024-06-11
Anticipated expiration: 2033-09-25

Abstract

The utility model discloses a backflow prevention valve which comprises a first valve casing and a second valve casing and is characterized in that a water inlet pipe is fixedly connected to the side wall of the first valve casing, a water outlet pipe is fixedly connected to the side wall of the second valve casing, a first installation block is fixedly connected to the side wall of the first valve casing, a second installation block matched with the first installation block is fixedly connected to the side wall of the second valve casing, the first installation block is fixedly connected with the second installation block through a first bolt, and threaded holes are formed between the first installation block and the second installation block. Through setting up first installation piece, second installation piece, a bolt, first installation piece, second installation, no. two bolts, make No. one valve casing and No. two valve casings can dismantle and install, make the incrustation scale in the valve can be cleared up, reduced use cost.

Description

Backflow prevention valve

Technical Field

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

Background

The valve is a device for controlling the direction, pressure and flow rate of fluid in a fluid system, and is a device for enabling or disabling the flow of medium (liquid, gas and powder) in piping and equipment, and can be used for controlling the flow of various types of fluid such as air, water, steam, various corrosive media, slurry, oil, liquid metal and radioactive media. The valves are also classified into cast iron valves, cast steel valves, stainless steel valves, chrome molybdenum vanadium steel valves, dual phase steel valves, plastic valves, non-standard custom valves, etc. according to the materials.

The publication number is: CN219102119U discloses a backflow prevention valve, drives the screw rod through the carousel and rotates for the screw rod drives reserve backflow prevention dish and carries out position control, and reserve backflow prevention dish can seal the delivery port of catchment cover top this moment, can prevent the phenomenon of flowing backwards this moment. The long-time use of valve can make the valve in produce the incrustation scale, and the water catch bowl and the drainage cover of above-mentioned technique are all as an organic whole structure with the valve body, can't clear up the incrustation scale in the valve, have increased use cost.

In order to solve the above problems, the present utility model provides a backflow prevention valve.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model provides an anti-backflow valve, which solves the technical problems that a water collecting cover, a drainage cover and a valve body in the prior art are of an integrated structure, scale in the valve cannot be cleaned, and the use cost is increased.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

The utility model provides a backflow prevention valve, includes valve casing, no. two valve casings, its characterized in that, the lateral wall fixedly connected with inlet tube of No. one valve casing, fixedly connected with drain pipe on the lateral wall of No. two valve casings, fixedly connected with first installation piece on the lateral wall of No. two valve casings, fixedly connected with and first installation piece assorted second installation piece on the lateral wall of No. two valve casings, first installation piece and second installation piece pass through a bolt fixed connection, threaded hole has been offered jointly between first installation piece and the second installation piece, threaded hole and valve casing and No. two are linked together in the valve casing, threaded hole threaded connection has the threaded rod, the one end fixedly connected with rolling disc of threaded rod, the other end fixedly connected with piston plate of threaded rod, fixedly connected with semicircle on the inner wall of No. one valve casing, fixedly connected with baffle on the lateral wall of No. two semicircle casings, fixedly connected with baffle between No. two semicircle casings and No. two inner wall of No. two semicircle casings, the outlet pipe fixedly connected with hinge connection has the outlet pipe end of No. two valve casings.

As the preferable technical scheme of the utility model, the lower end of the first valve casing is fixedly connected with a first connecting block, the lower end of the second valve casing is fixedly connected with a second connecting block, the first connecting block and the second connecting block are fixedly connected through a second bolt, a drain hole is commonly formed between the first connecting block and the second connecting block, and a sealing plug is arranged in the drain hole.

As the preferable technical scheme of the utility model, the side wall of the first valve casing is provided with a water inlet hole matched with the water inlet pipe, the water inlet pipe is communicated with the inside of the first valve casing through the water inlet hole, and the side wall of the second valve casing is provided with a water outlet hole matched with the water outlet pipe.

As a preferable technical scheme of the utility model, two sides of the piston plate are respectively connected with the side walls of the first half cylinder and the second half cylinder in a sealing sliding manner.

As a preferable technical scheme of the utility model, the side wall of the backflow prevention plate is abutted with the side wall of the water outlet pipe.

As a preferable technical scheme of the utility model, the second semi-cylinder is provided with a plurality of through holes.

The utility model provides a backflow prevention valve, which has the following beneficial effects:

1. Through setting up first installation piece, second installation piece, first bolt, first installation piece, second installation, no. two bolts, make No. one valve casing and No. two valve casings can dismantle and install, make the incrustation scale in the valve can be cleared up, reduced use cost;

2. Through arranging the first semi-cylinder, the second semi-cylinder, the through hole, the piston plate, the threaded rod and the rotating disc, water flow entering the first valve casing and the second valve casing from the water inlet pipe can pass through the through hole of the second semi-cylinder and be discharged from the water outlet pipe under the control of the piston plate, so that the flow of the water flow is controlled;

3. Through setting up wash port and sealing plug, make ponding in valve casing and the No. two valve casings can discharge through the wash port. .

Drawings

FIG. 1 is a schematic perspective view of a backflow prevention valve according to the present utility model;

FIG. 2 is a cross-sectional view of a front structure of a backflow prevention valve according to the present utility model;

FIG. 3 is a sectional view showing a front structure of a backflow preventing valve according to the present utility model when the front structure is disassembled;

In the figure: the novel water heater comprises a water inlet pipe 1, a valve casing 2, a valve casing 3, a water outlet pipe 4, a first installation block 5, a second installation block 6, a first bolt 7, a first connection block 8, a second connection block 9, a second bolt 10, a rotating disc 11, a threaded rod 12, a piston plate 13, a semi-cylinder 14, a semi-cylinder 15, a guide plate 16, a water outlet pipe 17 and a backflow preventing plate 18.

Detailed Description

Embodiments of the present utility model are described in further detail below with reference to the accompanying drawings and examples. The following examples are illustrative of the utility model but are not intended to limit the scope of the utility model. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front," "rear," "head," "tail," and the like are used as an orientation or positional relationship based on that shown in the drawings, merely to facilitate description of the utility model and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Examples

Referring to fig. 1-3, a backflow prevention valve, including valve casing 2, valve casing 3 No. two, the lateral wall fixedly connected with inlet tube 1 of valve casing 2 No. two, fixedly connected with drain pipe 4 on the lateral wall of valve casing 3 No. two, fixedly connected with first installation piece 5 on the lateral wall of valve casing 2 No. one, fixedly connected with and first installation piece 5 assorted second installation piece 6 on the lateral wall of valve casing 3 No. two, first installation piece 5 passes through bolt 7 fixed connection with second installation piece 6, threaded hole has been offered jointly between first installation piece 5 and the second installation piece 6, threaded hole and valve casing 2 No. two are linked together in valve casing 3, threaded hole internal thread connection has threaded rod 12, one end fixedly connected with rolling disc 11 of threaded rod 12, the other end fixedly connected with piston plate 13 of threaded rod 12, fixedly connected with semicircle barrel 14 on the inner wall of valve casing 2 No. one, fixedly connected with and semicircle barrel 15 of first semicircle barrel 14 phase-match on the inner wall of valve casing 3 No. two, fixedly connected with deflector 16 on the lateral wall of semicircle barrel 15, deflector 16 on the inner wall of semicircle barrel 15, deflector 16, the outlet pipe 17 is formed between deflector 16 and the valve casing 3 and the inner wall of valve casing 3, the outlet pipe is fixedly connected with outlet pipe 17.

The threaded rod 12 is placed between the first installation block 5 and the second installation block 6, the first installation block 5 and the second installation block 6 are fixedly connected through a first bolt 7, the first connection block 8 and the second connection block 9 are fixedly connected through a second bolt 10, the first valve casing 2 and the second valve casing 3 are connected, the threaded rod 12 moves downwards in the threaded hole through the rotating disc 11, water flows into the first valve casing 2 and the second valve casing 3 through the water inlet pipe 1, the piston plate 13 rotates the threaded rod 12 through the rotating disc 11 to drive the piston plate 13 to move upwards, water flows into the space between the first semicircular cylinder 14 and the second semicircular cylinder 15, then flows to the water outlet pipe 17 through the through hole of the second semicircular cylinder 15 through the guide plate 16, the water flows out of the backflow preventing plate 18 through the water outlet pipe 4, the water flow on the left side of the backflow preventing plate 18 cannot flow out of the backflow preventing plate 18 when the water inlet pipe 1 is not in the first valve casing 2 and the second valve casing 3, and the backflow preventing plate 18 is abutted against the left side wall of the water outlet pipe 17 under the action of the backflow preventing plate 18;

Wherein, the lower extreme fixedly connected with first connecting block 8 of valve casing 2, the lower extreme fixedly connected with second connecting block 9 of No. two valve casings 3, first connecting block 8 and second connecting block 9 pass through No. two bolt 10 fixed connection, have offered the wash port jointly between first connecting block 8 and the second connecting block 9, are provided with the sealing plug in the wash port.

By arranging the drain hole and the sealing plug, the sealing plug can be pulled out, so that accumulated water in the first valve casing 2 and the second valve casing 3 is discharged into the first valve casing 2 and the second valve casing 3 through the drain hole;

The side wall of the first valve casing 2 is provided with a water inlet hole matched with the water inlet pipe 1, the water inlet pipe 1 is communicated with the first valve casing 2 through the water inlet hole, and the side wall of the second valve casing 3 is provided with a water outlet hole matched with the water outlet pipe 17;

wherein, the both sides of piston plate 13 are respectively with the lateral wall sealing sliding connection of first semicircle 14 and second semicircle 15.

The side wall of the backflow preventing plate 18 is abutted against the side wall of the water outlet pipe 17.

The side wall of the backflow prevention plate 18 is abutted with the side wall of the water outlet pipe 17, so that the backflow prevention plate 18 can be abutted by the water outlet pipe 17 when water flows back, and the backflow prevention plate 18 prevents backflow water from entering the water outlet pipe 4;

Wherein, a plurality of through holes are arranged on the second half cylinder 15.

Through the arrangement of the through holes, water flow can flow into the drain pipe 4 through the through holes on the second semi-cylinder 15.

The working principle of the utility model is as follows: the threaded rod 12 is placed between the first installation block 5 and the second installation block 6, the first installation block 5 and the second installation block 6 are fixedly connected through a first bolt 7, the first connection block 8 and the second connection block 9 are fixedly connected through a second bolt 10, the first valve casing 2 and the second valve casing 3 are attached, the threaded rod 12 is downwards moved in a threaded hole by rotating the rotating disc 11, water flows into the first valve casing 2 and the second valve casing 3 through the water inlet pipe 1, the piston plate 13 is arranged at the lower end parts of the first semi-cylinder 14 and the second semi-cylinder 15, the threaded rod 12 is rotated by rotating the rotating disc 11 to drive the piston plate 13 to upwards move, water flows into a space between the first semi-cylinder 14 and the second semi-cylinder 15, then flows to the water outlet pipe 17 through the through hole of the second semi-cylinder 15, the water flow guide plate 16 is flushed out of the anti-backflow plate 18, and can outwards flow out through the water outlet pipe 4 at the moment, after the water is not conveyed into the first valve casing 2 and the second valve casing 3, the left water flow cannot be flushed out of the anti-backflow plate 18, the anti-backflow plate 18 is flushed out of the left side wall 18, and the anti-backflow plate 18 is enabled to move left side wall 18;

When the accumulated water in the first valve casing 2 and the second valve casing 3 is required to be discharged, the sealing plug in the drain hole formed between the first connecting block 8 and the second connecting block 9 is pulled out, so that the accumulated water can be discharged outwards through the drain hole;

When the scale in the valve needs to be cleaned, the first bolt 7 is firstly taken out, the first installation block 5 is separated from the second installation block 6, the second bolt 10 is taken out, the first connection block 8 is separated from the second connection block 9, and the separation of the first valve casing 2 and the second valve casing 3 is completed at the moment, so that a worker can clean the scale in the first valve casing 2 and the second valve casing 3, and the use cost is reduced.

The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical scheme of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model. It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.

Claims

1. The utility model provides a backflow prevention valve, includes valve casing (2), no. two valve casings (3), a serial communication port, lateral wall fixedly connected with inlet tube (1) of No. one valve casing (2), fixedly connected with drain pipe (4) on the lateral wall of No. two valve casings (3), fixedly connected with first installation piece (5) on the lateral wall of No. one valve casing (2), fixedly connected with second installation piece (6) with first installation piece (5) assorted on the lateral wall of No. two valve casings (3), first installation piece (5) and second installation piece (6) pass through bolt (7) fixedly connected with, set up the screw hole jointly between first installation piece (5) and second installation piece (6), screw hole and No. one valve casing (2) and No. two valve casings (3) internal connection, screw hole threaded connection has (12), the one end fixedly connected with rolling disc (11) of screw rod (12), the other end fixedly connected with piston plate (13) of No. two valve casings (14) on the inner wall of No. one valve casing (2) fixedly connected with semi-circular cylinder (15) and No. two semi-circular cylinder (14), a sealing cavity is formed between the second semicircular cylinder (15), the guide plate (16) and the inner wall of the second valve casing (3), a water outlet pipe (17) is fixedly connected to the inner wall of the second valve casing (3), and a backflow preventing plate (18) is connected to the water outlet end of the water outlet pipe (17) in a hinge mode.

2. The backflow prevention valve according to claim 1, wherein the lower end of the first valve casing (2) is fixedly connected with a first connecting block (8), the lower end of the second valve casing (3) is fixedly connected with a second connecting block (9), the first connecting block (8) and the second connecting block (9) are fixedly connected through a second bolt (10), a drain hole is commonly formed between the first connecting block (8) and the second connecting block (9), and a sealing plug is arranged in the drain hole.

3. The backflow prevention valve according to claim 1, wherein a water inlet hole matched with the water inlet pipe (1) is formed in the side wall of the first valve casing (2), the water inlet pipe (1) is communicated with the first valve casing (2) through the water inlet hole, and a water outlet hole matched with the water outlet pipe (17) is formed in the side wall of the second valve casing (3).

4. A backflow prevention valve according to claim 1, wherein the piston plate (13) is slidably connected in sealing relation to the side walls of the first semi-cylinder (14) and the second semi-cylinder (15) on both sides.

5. A backflow prevention valve according to claim 1, wherein the side wall of the backflow prevention plate (18) is abutted against the side wall of the water outlet pipe (17).

6. A backflow prevention valve according to claim 1, wherein the second semi-cylinder (15) is provided with a plurality of through holes.