CN219102119U

CN219102119U - Backflow prevention valve

Info

Publication number: CN219102119U
Application number: CN202223193305.8U
Authority: CN
Inventors: 袁剑
Original assignee: Sichuan Scgute Valve Manufacturing Co ltd
Current assignee: Sichuan Scgute Valve Manufacturing Co ltd
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-05-30
Anticipated expiration: 2032-11-30

Abstract

The utility model relates to the technical field of valves and discloses a backflow prevention valve which comprises a valve body, wherein a water collecting cover is fixedly connected to the left side inside the valve body, a drainage cover is fixedly connected to the right side inside the valve body, a mounting piece is fixedly connected to the right side top of the drainage cover, a rotating shaft is fixedly connected to the inner side of the mounting piece, a connecting piece is rotationally connected to the rotating shaft, torsion springs are sleeved on the front portion and the rear portion of the rotating shaft, one end of the connecting piece, far away from the rotating shaft, is fixedly connected with a backflow prevention disc, the backflow prevention disc is attached to the right wall of the drainage cover, and a connecting seat is fixedly connected to the upper portion of the valve body, and the mounting disc is mounted on the top of the connecting seat.

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 pipeline accessory for opening and closing a pipeline, controlling flow direction, adjusting and controlling parameters of a conveying medium, can be divided into a shutoff valve, a check valve, a regulating valve and the like according to the functions of the valve, is a control part in a fluid conveying system, has the functions of stopping, adjusting, guiding, preventing backflow, stabilizing pressure, shunting or overflow pressure relief and the like, and is a valve capable of preventing liquid backflow and ensuring that the valve circulates liquid along one direction.

For publication No.: 201922136646.3 provides a backflow prevention valve, and a comparison file drives a valve core to circulate and block and adjust a water outlet inside a valve body through a rotating head.

Disclosure of Invention

The utility model aims at: in order to solve the above-mentioned problems.

The technical scheme adopted by the utility model is as follows: the backflow prevention valve comprises a valve body, wherein a water collecting cover is fixedly connected to the left side inside the valve body, a drainage cover is fixedly connected to the right side inside the valve body, a mounting piece is fixedly connected to the top of the right side of the drainage cover, a rotating shaft is fixedly connected to the inner side of the mounting piece, a connecting piece is rotationally connected to the rotating shaft, torsion springs are sleeved on the rotating shaft front and back, a backflow prevention disc is fixedly connected to one end, far away from the rotating shaft, of the connecting piece, and the backflow prevention disc is attached to the right wall of the drainage cover;

the top fixedly connected with connecting seat of valve body, and the mounting disc is installed at the top of connecting seat, the top fixedly connected with internal thread pipe of mounting disc, the inside threaded connection of internal thread pipe and connecting seat has the screw rod, the bottom rotation of screw rod is connected with reserve anti-backflow dish, and reserve anti-backflow dish pressfitting is in the top opening part of catchment cover.

In a preferred embodiment, the water collection cover and the drainage cover are of an integrated structure with the valve body, and the drainage cover is located on the right side of the water collection cover.

Through above-mentioned technical scheme, can increase the velocity of flow of water through the drainage cover, can be with the better opening of anti-reflux dish this moment.

In a preferred embodiment, one end of the torsion spring is fixedly connected with the inner wall of the mounting member, and the other end of the torsion spring is fixedly connected with the connecting member.

Through the technical scheme, the anti-backflow disc can be better sealed on the right side of the drainage cover through the torsion spring, and backflow can be prevented at the moment.

In a preferred embodiment, the outer diameter of the joint of the backflow prevention disc and the drainage cover is the same.

Through above-mentioned technical scheme, can seal the drainage cover right side through preventing flowing backwards the dish.

In a preferred embodiment, the connecting seat and the upper part of the valve body are of an integrated structure, and the connecting seat is connected with the periphery of the mounting plate through bolts.

Through above-mentioned technical scheme, can install the mounting disc at the top of connecting seat through the bolt, the screw rod can carry out the upper and lower position and remove in the inside of internal thread pipe and connecting seat this moment.

In a preferred embodiment, the top end of the screw is fixedly connected with a turntable, and the bottom end of the screw is connected with the standby backflow prevention disc through a bearing.

Through above-mentioned technical scheme, drive the screw rod through the carousel and carry out better rotation, can press fit reserve anti-backflow dish at the top delivery port position of catchment cover this moment, can play and prevent flowing backwards.

In a preferred embodiment, the outer diameter of the joint of the standby backflow preventing disc and the water collecting cover is the same, and sealing rings are arranged at the joint of the standby backflow preventing disc and the water collecting cover.

Through above-mentioned technical scheme, through the better leakproofness of guaranteeing reserve anti-backflow dish and water catch bowl laminating department of sealing washer.

In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows: the utility model provides a backflow prevention valve, which is convenient for automatically and manually adjusting the inside of a valve body, and when the backflow prevention disc cannot be used, the other standby backflow prevention disc can be used.

1. According to the utility model, through the cooperation of the rotating shaft, the connecting piece, the torsion spring and the backflow prevention disc, the backflow prevention disc automatically seals the right side of the drainage cover to prevent water backflow, and meanwhile, the backflow prevention disc can be automatically flushed by water, so that normal conveying and use can be performed.

2. According to the utility model, the screw is driven to rotate by the turntable, so that the screw drives the standby backflow prevention disc to adjust the position, and the standby backflow prevention disc can seal the water outlet above the water collecting cover at the moment, and can prevent backflow at the moment.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of the structure of the present utility model;

FIG. 3 is an enlarged schematic view of the structure of the area A in FIG. 2 according to the present utility model.

The marks in the figure: 1-a valve body; 2-a water collecting cover; 3-drainage cover; 4-mounting; 5-rotating shaft; a 6-connector; 7-torsion springs; 8-a backflow prevention disc; 9-connecting seats; 10-mounting a disc; 11-an internally threaded tube; 12-screw; 13-a turntable; 14-standby backflow prevention disc.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments of the present utility model will be clearly and completely described in the following in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

A backflow prevention valve according to an embodiment of the present utility model will be described in detail with reference to fig. 1 to 3.

Examples:

referring to fig. 1-3, a backflow prevention valve comprises a valve body 1, wherein a water collecting cover 2 is fixedly connected to the left side inside the valve body 1, a drainage cover 3 is fixedly connected to the right side inside the valve body 1, the water collecting cover 2, the drainage cover 3 and the valve body 1 are of an integrated structure, the drainage cover 3 is positioned on the right side of the water collecting cover 2, and the flow rate of water can be increased through the drainage cover 3;

referring to fig. 2 and 3, the top of the right side of the drainage cover 3 is fixedly connected with a mounting part 4, the inner side of the mounting part 4 is fixedly connected with a rotating shaft 5, the rotating shaft 5 is rotationally connected with a connecting part 6, torsion springs 7 are sleeved on the front and the rear of the rotating shaft 5, one end of each torsion spring 7 is fixedly connected with the inner wall of the mounting part 4, the other end of each torsion spring 7 is fixedly connected with the connecting part 6, one end of each connecting part 6 far away from the rotating shaft 5 is fixedly connected with a backflow preventing disc 8, the backflow preventing discs 8 are attached to the right wall of the drainage cover 3, the outer diameters of the attachment positions of the backflow preventing discs 8 and the drainage cover 3 are the same, and the backflow preventing discs 8 automatically seal the right side of the drainage cover 3 through the cooperation of the rotating shaft 5, the connecting parts 6, the torsion springs 7 and the backflow preventing discs 8, and meanwhile, water can automatically wash the backflow preventing discs 8 away, and normal conveying use can be carried out;

referring to fig. 1 and 2, the connecting seat 9 is fixedly connected to the upper portion of the valve body 1, the connecting seat 9 and the upper portion of the valve body 1 are of an integrated structure, the mounting plate 10 is installed at the top of the connecting seat 9, the periphery of the connecting seat 9 and the mounting plate 10 are connected through bolts, the inner threaded pipe 11 is fixedly connected to the top of the mounting plate 10, the threaded pipe 11 and the inner threaded of the connecting seat 9 are connected with the screw 12, the top end of the screw 12 is fixedly connected with the rotary disk 13, the bottom end of the screw 12 is rotationally connected with the standby backflow preventing plate 14, the standby backflow preventing plate 14 is pressed at the top opening of the water collecting cover 2, the bottom end of the screw 12 is connected with the standby backflow preventing plate 14 through a bearing, the outer diameter of the joint of the standby backflow preventing plate 14 and the water collecting cover 2 is the same, and the joint of the standby backflow preventing plate 14 and the water collecting cover 2 is provided with sealing rings, the screw 12 is driven to rotate through the rotary disk 13, so that the screw 12 drives the standby backflow preventing plate 14 to perform position adjustment, and at the moment, the standby backflow preventing plate 14 can seal the water outlet above the water collecting cover 2.

The application has the advantages that: the utility model provides a backflow prevention valve, which is convenient for automatically and manually adjusting the inside of a valve body 1, and when the backflow prevention disc 8 cannot be used for preventing backflow, the other standby backflow prevention disc 14 can be used.

Working principle: when the valve body 1 is used, the rotary table 13 is rotated to one side, the screw 12 drives the standby backflow prevention disc 14 to be separated from the water outlet above the water collecting cover 2, the standby backflow prevention disc 14 is reserved, water flows into the valve body 1 through the left side of the valve body 1, water enters into the drainage cover 3 through the water outlet above the water collecting cover 2, at the moment, the water rushes open the backflow prevention disc 8 on the right side of the drainage cover 3, and can be conveyed through the right side of the valve body 1, when the water is not conveyed on the left side of the valve body 1, the backflow prevention disc 8 automatically seals the right side of the drainage cover 3 under the cooperation of the rotary shaft 5, the connecting piece 6 and the torsion spring 7, backflow prevention can be achieved, when the backflow prevention disc 8 cannot be used, the screw 12 and the standby backflow prevention disc 14 can be driven to move downwards through the rotary table 13, and the water outlet above the water collecting cover 2 can be sealed through the standby backflow prevention disc 14.

The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. The utility model provides a prevent backflow valve, includes valve body (1), its characterized in that: the novel water collecting valve is characterized in that the water collecting cover (2) is fixedly connected to the left side inside the valve body (1), the drainage cover (3) is fixedly connected to the right side inside the valve body (1), the mounting piece (4) is fixedly connected to the right side top of the drainage cover (3), the rotating shaft (5) is fixedly connected to the inner side of the mounting piece (4), the connecting piece (6) is rotatably connected to the rotating shaft (5), the torsion springs (7) are sleeved on the front and rear sides of the rotating shaft (5), the backflow preventing disc (8) is fixedly connected to one end, far away from the rotating shaft (5), of the connecting piece (6), and the backflow preventing disc (8) is attached to the right wall of the drainage cover (3);

the top fixedly connected with connecting seat (9) of valve body (1), and install mounting disc (10) at the top of connecting seat (9), the top fixedly connected with internal thread pipe (11) of mounting disc (10), the inside threaded connection of internal thread pipe (11) and connecting seat (9) has screw rod (12), the bottom rotation of screw rod (12) is connected with reserve anti-backflow dish (14), and reserve anti-backflow dish (14) pressfitting is in the top opening part of catchment cover (2).

2. A backflow prevention valve as claimed in claim 1, wherein: the water collecting cover (2), the drainage cover (3) and the valve body (1) are of an integrated structure, and the drainage cover (3) is positioned on the right side of the water collecting cover (2).

3. A backflow prevention valve as claimed in claim 1, wherein: one end of the torsion spring (7) is fixedly connected with the inner wall of the mounting piece (4), and the other end of the torsion spring (7) is fixedly connected with the connecting piece (6).

4. A backflow prevention valve as claimed in claim 1, wherein: the outer diameter of the joint of the backflow prevention disc (8) and the drainage cover (3) is the same.

5. A backflow prevention valve as claimed in claim 1, wherein: the connecting seat (9) and the upper part of the valve body (1) are of an integrated structure, and the periphery of the connecting seat (9) and the periphery of the mounting plate (10) are connected through bolts.

6. A backflow prevention valve as claimed in claim 1, wherein: the top of screw rod (12) fixedly connected with carousel (13), the bottom of screw rod (12) is connected through the bearing with reserve anti-backflow dish (14).

7. A backflow prevention valve according to claim 6, wherein: the outer diameter of the joint of the standby backflow prevention disc (14) and the water collecting cover (2) is the same, and sealing rings are arranged at the joint of the standby backflow prevention disc (14) and the water collecting cover (2).