CN220980366U

CN220980366U - Backflow-preventing stop valve

Info

Publication number: CN220980366U
Application number: CN202322737319.XU
Authority: CN
Inventors: 刘江
Original assignee: Anhui Xuanan Construction Engineering Co ltd
Current assignee: Anhui Xuanan Construction Engineering Co ltd
Priority date: 2023-10-12
Filing date: 2023-10-12
Publication date: 2024-05-17
Anticipated expiration: 2033-10-12

Abstract

The utility model discloses an anti-backflow stop valve, which belongs to the technical field of stop valves and comprises a stop valve main body, a valve rod and a separation cavity plate, wherein the separation cavity plate and the valve rod are respectively arranged in the middle of the stop valve main body; the traction sleeve is used for traction of the sealing plug, the sealing plug can be conveniently and stably moved in the traction sleeve, the sealing plug can be conveniently and rapidly closed, usability of the stop valve main body is improved, meanwhile, the clamping plate is sleeved on the surface of the pipeline and the stop valve main body, the pre-installation of the stop valve main body and the pipeline is facilitated, and convenience of installation of an operator on the pipeline and the stop valve main body is improved.

Description

Backflow-preventing stop valve

Technical Field

The utility model belongs to the technical field of stop valves, and particularly relates to a backflow-preventing stop valve.

Background

The stop valve, also called a stop valve, is one of the most widely used valves, and is popular because the friction force between sealing surfaces in the opening and closing process is small, the stop valve is durable, the opening height is small, the manufacture is easy, the maintenance is convenient, and the stop valve is not only suitable for medium and low pressure, but also suitable for high pressure. The closing principle of the stop valve is that the valve clack sealing surface is tightly attached to the valve seat sealing surface by means of the valve lever pressure, so that medium circulation is prevented. The valve 'three types' in China stipulates that the flow direction of the stop valve is uniformly from top to bottom, so that the valve has directivity during installation. The structure length of the stop valve is larger than that of the gate valve, meanwhile, the fluid resistance is large, and the sealing reliability is not strong in long-term operation, so that the existing stop valve basically meets the practical requirements of people, but the following problems still exist.

In the prior art, in order to improve the usability of the stop valve, a backflow preventing function may be further arranged in a part of the stop valve, but in the use process of the stop valve, an operator screws the valve rod to drive the plug to move, the plug is opened to open a water outlet formed in the separation cavity plate, so that the stop valve is normally used, but a device for pulling and moving the plug may be arranged in the part of the stop valve, so that an operator may not be able to insert the plug into the water outlet on the separation cavity plate quickly when driving the plug to move through the valve rod, and the stop valve is closed.

Disclosure of utility model

The utility model provides an anti-backflow stop valve, which is characterized in that a sealing plug moves in a traction sleeve, so that sliding blocks arranged on the periphery of the traction sleeve are opened by the sealing plug, the movement direction of the sealing plug is pulled by the traction sleeve, the traction sleeve is conveniently and rapidly closed by the sealing plug, and the usability of a stop valve main body is improved.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an anti-reflux stop valve, includes stop valve main part, valve rod and separates the partition plate, and stop valve main part middle part is provided with partition plate and valve rod respectively, stop valve main part middle part screw thread installs the valve rod, and the valve rod end is fixed with the sealing plug, sealing plug surface cover is equipped with the traction sleeve of fixing on separating the partition plate, a plurality of groups leakage fluid dram has been seted up all around to the traction sleeve, separate the partition plate and fix in the stop valve main part, the laminating of sealing plug end has the baffle that sets up in the traction sleeve, and the baffle carries out elastic connection with the traction sleeve.

Furthermore, a plurality of groups of sliding grooves are symmetrically formed in the end parts of the two sides of the stop valve main body, sliding blocks are embedded in the sliding grooves, sliding rods fixed on the inner walls of the sliding grooves are penetrated through the middle parts of the sliding blocks, second springs are sleeved on the surfaces of the sliding rods, the end parts of the two sides of the second springs are respectively abutted between the surfaces of the sliding blocks and the inner walls of the sliding grooves, and clamping plates are fixed on the surfaces of the sliding blocks.

Furthermore, the clamping plates are all arranged in an L shape, and the width of a gap between the L shapes arranged by the clamping plates is equal to that of the joint where the stop valve main body and the pipeline are mutually attached.

Further, the middle part of the sliding block is provided with a circular through hole, the sliding rods are all cylindrical, and the diameter of the cylindrical surface of each sliding rod is matched with the diameter of the inner wall of the circular through hole of the sliding block.

Furthermore, one side of the surface of the sealing plug, which is mutually attached to the traction sleeve, is filled with a rubber ring, and the rubber ring is fixed on the surface of the sealing plug.

Furthermore, the baffle is fixed with the traction lever all around, and the traction lever all runs through the spacing that is fixed on the terminal inner wall of traction sleeve, the traction lever end is fixed with and is provided with annular spacing ring, the traction lever surface all overlaps and is equipped with first spring, and the tip of first spring both sides butt respectively is between baffle surface and spacing surface.

The beneficial effects of the utility model are as follows:

1. This anti-reflux stop valve is provided with the sealing plug, pulls cover and leakage fluid dram, drives the sealing plug through the valve rod and moves in pulling the cover, and the sealing plug will pull the cover and open the leakage fluid dram of seting up all around, because the sealing plug moves in pulling the cover, makes and pulls the cover to the sealing plug, makes things convenient for the sealing plug to pull the cover in and stably remove, is convenient for the sealing plug to pull the cover and close fast, improves the usability of stop valve main part.

2. This anti-reflux stop valve is provided with splint, second spring, slider and spout, through operator's pulling splint, splint slide in the spout through the slider, and slider extrusion second spring, make second spring take place elastic deformation, splint shift out from the stop valve main part front end, follow the pipeline and the mutual laminating of stop valve main part, then operator loosens splint, second spring elastic deformation resumes, the second spring promotes splint through the slider and removes, make the splint cover establish on pipeline and stop valve main part surface, be convenient for install in advance stop valve main part and pipeline, improve the convenience of operator to pipeline and stop valve main part installation.

Drawings

FIG. 1 is a schematic cross-sectional elevation view of the present utility model;

FIG. 2 is an enlarged schematic view of the structure of FIG. 1A according to the present utility model;

FIG. 3 is a schematic top cross-sectional view of the traction jacket and sealing plug of the present utility model;

FIG. 4 is an enlarged schematic view of the structure of FIG. 1B according to the present utility model;

Fig. 5 is a schematic side view of the clamping plate of the present utility model.

In the figure:

1. a shutoff valve body; 2. a valve stem; 3. a compartment plate; 4. a clamping plate; 5. a traction sleeve; 6. a liquid outlet; 7. a rubber ring; 8. a baffle; 9. a limiting ring; 10. a traction rod; 11. a first spring; 12. a sealing plug; 13. a second spring; 14. a chute; 15. a slide bar; 16. a slide block; 17. and a limiting frame.

Detailed Description

For further understanding of the utility model, its features and advantages, reference is now made to the following examples, which are described in detail with reference to the accompanying drawings.

Examples:

Referring to fig. 1-5, an anti-backflow stop valve comprises a stop valve main body 1, a valve rod 2 and a separation cavity plate 3, wherein the separation cavity plate 3 and the valve rod 2 are respectively arranged in the middle of the stop valve main body 1, the valve rod 2 is arranged in the middle of the stop valve main body 1 in a threaded manner, a sealing plug 12 is welded at the tail end of the valve rod 2, a traction sleeve 5 welded on the separation cavity plate 3 is sleeved on the surface of the sealing plug 12, a plurality of groups of liquid discharge ports 6 are formed around the traction sleeve 5, the separation cavity plate 3 is welded on the stop valve main body 1, a baffle 8 arranged in the traction sleeve 5 is attached at the tail end of the sealing plug 12, the baffle 8 is in elastic connection with the traction sleeve 5, a traction rod 10 is welded around the baffle 8, the traction rod 10 penetrates through a limit frame 17 welded on the tail end inner wall of the traction sleeve 5, a circular limit ring 9 is welded at the tail end of the traction rod 10, a first spring 11 is sleeved on the surface of the traction rod 10, and the two side ends of the first spring 11 are respectively abutted between the surface of the baffle plate 8 and the surface of the limiting frame 17, when an operator rotates the valve rod 2, the valve rod 2 drives the sealing plug 12 to move, so that the sealing plug 12 slides in the traction sleeve 5, the sealing plug 12 is opened around the traction sleeve 5 to drive the liquid outlet 6 to move away, the traction sleeve 5 opens the liquid outlet 6, then liquid flows into another cavity of the separation cavity plate 3 which separates the stop valve main body 1 through the liquid outlet 6 opened around the traction sleeve 5, the sealing plug 12 moves in the traction sleeve 5, the operator is convenient to pull the moving track of the sealing plug 12, the sealing plug 12 is convenient to move along a straight line, the sealing plug 12 is convenient to be quickly inserted in the traction sleeve 5, the traction sleeve 5 is sealed, and when the sealing plug 12 moves up and down in the traction sleeve 5, the sealing plug 12 pushes the baffle plate 8 to move, make baffle 8 promote drawbar 10 and remove in the through-hole of seting up all around of spacing 17 to baffle 8 when removing, baffle 8 extrudees first spring 11, make first spring 11 take place elastic deformation, first spring 11 dodges baffle 8, and sealing plug 12 when pulling the cover 5 and remove downwards, sealing plug 12 will pull the in-process that cover 5 was closed, stronger hydraulic pressure striking is on baffle 8, after hydraulic pressure striking is on baffle 8, baffle 8 protects sealing plug 12, avoid stronger hydraulic pressure direct striking on sealing plug 12, sealing plug 12 receives the striking for a long time after, sealing plug 12 breaks down, simultaneously after sealing plug 12 upwards removes in pulling the cover 5, sealing plug 12 no longer extrudees back through baffle 8 to first spring 11, first spring 11 elastic deformation resumes, baffle 8 is promoted to remove to first spring 11, make baffle 8 laminating on sealing plug 12 end, baffle 8 protects sealing plug 12, prevent that sealing plug 12 from opening back with liquid outlet 6, liquid striking is on sealing plug 12, make baffle 8 protect sealing plug 12.

In other embodiments, a plurality of groups of sliding grooves 14 are symmetrically formed at two side ends of the stop valve main body 1, sliding blocks 16 are embedded in the sliding grooves 14, sliding rods 15 welded on the inner wall of the sliding grooves 14 are penetrated through the middle parts of the sliding blocks 16, circular through holes are formed in the middle parts of the sliding blocks 16, the sliding rods 15 are all arranged in a cylindrical shape, the diameter of the cylindrical surface of each sliding rod 15 is matched with the diameter of the inner wall of the circular through hole formed in the sliding block 16, second springs 13 are sleeved on the surfaces of the sliding rods 15, the two side ends of the second springs 13 are respectively abutted between the surfaces of the sliding blocks 16 and the inner wall of the sliding grooves 14, clamping plates 4 are welded on the surfaces of the sliding blocks 16, when an operator installs the stop valve main body 1 and a pipeline, the operator pulls the clamping plates 4 firstly, the clamping plates 4 drive the sliding blocks 16 to slide in the sliding grooves 14, after the sliding blocks 16 slide in the sliding grooves 14, the circular through holes formed in the middle parts of the sliding blocks 16 slide bars 15 slide on the surfaces of the circular through holes formed in the middle parts of the sliding blocks 16, the sliding blocks 16 can stably slide in the sliding grooves 14, and when the sliding blocks 16 move, the sliding blocks 16 squeeze the second springs 13, the second springs 13 are respectively abutted against the surfaces of the sliding blocks 16, the second springs 13 are pushed by the second springs 13, the second springs are pushed by the second springs 13, the elastic clamping plates are pushed by the elastic clamping plates, and the elastic clamping plates are pushed by the elastic clamping plates 1, and the elastic clamping plates are pushed by the elastic clamping plates, and the elastic clamping plates 1, and the elastic clamping plates are deformed by the elastic clamping plates 1 and the elastic clamping plates are respectively, and the elastic clamping plates are pushed by the elastic clamping plates and are respectively, and deformed by the sliding plates and are respectively, and are deformed by the sliding clamping plates 1 and are respectively, and are respectively. Make slider 16 drive splint 4 and remove, establish the pipe eaves of pipeline and stop valve main part 1 with splint 4 cover and laminate each other the department, connect in advance pipeline and stop valve main part 1, when being connected stop valve main part 1 and pipeline, no longer need the operator to hold in the palm stop valve main part 1 always, improve the convenience of operator to stop valve main part 1 and pipeline installation.

In other embodiments, the clamping plates 4 are all set to be L-shaped, the gap between the L-shaped clamping plates 4 is equal to the width of the joint between the stop valve main body 1 and the pipeline, the L-shaped clamping plates 4 are equal to the width of the joint between the two groups of stop valve main bodies 1, the L-shaped clamping plates 4 can be sleeved at the joint between the end parts of the stop valve main bodies 1 and the pipeline, the mutual pre-installation of the stop valve main bodies 1 of the pipeline is facilitated, and the convenience of the connection of the stop valve main bodies 1 and the pipeline is improved.

In other embodiments, the rubber ring 7 is filled on one side of the surface of the sealing plug 12, which is mutually attached to the traction sleeve 5, and the rubber ring 7 is welded on the surface of the sealing plug 12, when an operator pushes the sealing plug 12 to move in the liquid outlet 6 through the valve rod 2, the valve rod 2 drives the sealing plug 12 to move, and the valve rod 2 inserts the sealing plug 12 into the traction sleeve 5, and after the sealing plug 12 is inserted into the traction sleeve 5, the sealing plug 12 is filled between the inner wall of the traction sleeve 5 and the surface of the sealing plug 12, so that the rubber ring 7 increases the tightness of the sealing plug 12 inserted into the traction sleeve 5.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an anti-reflux stop valve, includes stop valve main part (1), valve rod (2) and separates chamber board (3), and stop valve main part (1) middle part is provided with respectively separates chamber board (3) and valve rod (2), its characterized in that: valve rod (2) are installed to stop valve main part (1) middle part screw thread, and valve rod (2) end-to-end is fixed with sealing plug (12), sealing plug (12) surface cover is equipped with and fixes traction sleeve (5) on separating chamber board (3), a plurality of groups leakage fluid dram (6) have been seted up all around to traction sleeve (5), separating chamber board (3) are fixed on stop valve main part (1), sealing plug (12) end-to-end laminating has baffle (8) that set up in traction sleeve (5), and baffle (8) carry out elastic connection with traction sleeve (5).

2. A backflow prevention stop valve according to claim 1, wherein: a plurality of groups of sliding grooves (14) are symmetrically formed in the end portions of two sides of the stop valve main body (1), sliding blocks (16) are embedded in the sliding grooves (14), sliding rods (15) fixed on the inner walls of the sliding grooves (14) are penetrated through the middle portions of the sliding blocks (16), second springs (13) are sleeved on the surfaces of the sliding rods (15), the end portions of two sides of each second spring (13) are respectively abutted between the surfaces of the sliding blocks (16) and the inner walls of the sliding grooves (14), and clamping plates (4) are fixed on the surfaces of the sliding blocks (16).

3. A backflow prevention shutoff valve as defined in claim 2, wherein: the clamping plates (4) are all L-shaped, and the width of the gap between the L-shaped clamping plates (4) is equal to the width of the joint where the stop valve main body (1) and the pipeline are mutually attached.

4. A backflow prevention stop valve according to claim 3, wherein: the middle part of the sliding block (16) is provided with a circular through hole, the sliding rods (15) are all cylindrical, and the diameter of the cylindrical surface of the sliding rods (15) is matched with the diameter of the inner wall of the circular through hole of the sliding block (16).

5. A backflow prevention stop valve according to claim 1, wherein: one side of the surface of the sealing plug (12) and the traction sleeve (5) which are mutually attached is filled with a rubber ring (7), and the rubber ring (7) is fixed on the surface of the sealing plug (12).

6. A backflow prevention stop valve according to claim 1, wherein: the traction device is characterized in that traction rods (10) are fixed around the baffle plate (8), the traction rods (10) penetrate through limiting frames (17) fixed on the inner wall of the tail end of the traction sleeve (5), a circular limiting ring (9) is fixed at the tail end of the traction rods (10), first springs (11) are sleeved on the surfaces of the traction rods (10), and two side end portions of the first springs (11) are respectively abutted between the surfaces of the baffle plate (8) and the surfaces of the limiting frames (17).