CN218818361U

CN218818361U - Check valve for fire-fighting pipeline

Info

Publication number: CN218818361U
Application number: CN202223439392.0U
Authority: CN
Inventors: 申励; 孙志刚; 王玉建
Original assignee: Guizhou Xinzhengcheng Hvac Engineering Co ltd
Current assignee: Guizhou Xinzhengcheng Hvac Engineering Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-04-07
Anticipated expiration: 2032-12-22

Abstract

The utility model discloses a non return valve that fire control pipeline used, including the valve outer wall, the internally mounted of valve outer wall has non return mechanism, non return mechanism is including fixed stopper, the both ends welding of fixed stopper has the stopper, the internally mounted of fixed stopper has the shrink pole, the shrink spring has been cup jointed on the lateral wall of shrink pole, fixed connection between shrink pole and the fixed stopper, first sliding tray has been seted up to the inside both sides of fixed stopper, the first sliding plate of bottom fixedly connected with of shrink pole, sliding connection between first sliding plate and the first sliding tray, the bottom symmetry fixedly connected with catch bar of first sliding plate, the inside second sliding tray of having seted up near one side of catch bar of valve outer wall, the impact force that brings through rivers makes the non return pole rotate on rotating the seat for the shrink of shrink spring and shrink pole makes rivers enter into the check valve end.

Description

Check valve for fire-fighting pipeline

Technical Field

The utility model relates to a check valve technical field, concretely relates to check valve that fire control pipeline used.

Background

The fire-fighting pipeline is a pipeline material which is used for connecting fire-fighting equipment and equipment in the aspect of fire fighting and used for conveying water for fire fighting, gas or other media, a check valve is usually used when the water for fire fighting is conveyed, and the butterfly check valve is generally used for the fire-fighting pipeline. The butterfly check valve is a valve that automatically opens and closes a valve flap depending on the flow of a medium itself to prevent the backflow of the medium, and is also called a check valve, a back-flow valve, and a back-pressure valve. The check valve is an automatic valve, and mainly has the functions of preventing media from flowing backwards, preventing the pump and the driving motor from reversing and discharging the media of a container.

Current check valve is when the operation, because valve clack and sealing ring receive the rivers impact for a long time, can make the impaired of valve clack and sealing ring, thereby lead to rivers to flow back out from the gap between valve clack and the sealing ring, thereby can't exert the effect of check valve, current check valve makes the valve clack reach and merge with the sealing ring thereby reach the effect that prevents the water backward flow through the thrust of rivers, and when rivers backward flow in the valve, there may exist the velocity of water and slow down the effect that can't merge valve clack and sealing ring completely, thereby lead to producing the gap between valve clack and the sealing ring and make the water backward flow, current check valve does not set up filter equipment, this impurity that has leaded to in the rivers can be attached to the valve inboard when through check valve is inside, long-time impurity accumulation, can lead to the unable normal operating of check valve, need staff to wash valve inside at every interval, because the inside structure of check valve is complicated, bring inconvenience when clearing up for the staff.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a check valve that fire control pipeline used.

The utility model discloses the technical problem that will solve as follows:

the valve clack and the sealing ring that have solved current check valve receive the rivers impact for a long time, probably can make the impaired of valve clack and sealing ring, thereby it comes out to lead to rivers to flow back from the gap between valve clack and the sealing ring, thereby it makes the valve clack reach the effect of preventing the water backward flow to merge with the sealing ring to have solved current check valve through the thrust of rivers, and when rivers backward flow in the valve, there may be the velocity of water slow down the effect that can't merge valve clack and sealing ring completely, thereby it makes the water backward flow to lead to producing the gap between valve clack and the sealing ring, it does not install filter equipment to have solved current check valve inside, this impurity that has leaded to in the rivers can be attached to the valve inboard when inside, long-time impurity accumulation, can lead to the unable normal operating of check valve.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a non return valve that fire control pipeline used, includes the valve outer wall, the internally mounted of valve outer wall has non return mechanism, non return mechanism is including fixed stopper, the both ends welding of fixed stopper has the stopper, the internally mounted of fixed stopper has the shrink pole, the shrink spring has been cup jointed on the lateral wall of shrink pole, fixed connection between shrink pole and the fixed stopper, first sliding tray has been seted up to the inside both sides of fixed stopper, the first sliding plate of bottom fixedly connected with of shrink pole, sliding connection between first sliding plate and the first sliding tray, the bottom symmetry fixedly connected with catch bar of first sliding plate, the second sliding plate is installed to the bottom of catch bar, the inside one side that is close to the catch bar of valve outer wall has seted up the second sliding tray, sliding connection between the one end of second sliding plate and the second sliding tray.

Furthermore, the one end fixedly connected with installation piece that the second sliding plate kept away from the second sliding tray, the valve outer wall is inside to be close to one side of installation piece and has seted up the mounting groove, adaptation connection between installation piece and the mounting groove.

Furthermore, limiting plates are fixedly connected to two ends of the push rod, and the limiting plates are fixedly connected with the first sliding plate and the second sliding plate.

Furthermore, the limiting block is positioned at an opening at the top end of the outer wall of the valve, and a rubber pad is connected between the limiting block and the outer wall of the valve in an adaptive manner.

Further, the inside one end of keeping away from non return mechanism of valve outer wall installs rotating assembly, rotating assembly is including rotating the seat, the top fixed connection of rotating the seat and the inside top side of valve outer wall, the bottom of rotating the seat is rotated and is connected with the non return pole, install torsion spring between non return pole and the rotation seat, T type piece is installed to the bottom of non return pole, the bottom fixed connection of T type piece is in the inside bottom side of valve outer wall, the one end and the T type piece adaptation connection of rotating the seat are kept away from to the non return pole.

Further, the one end that the runner assembly was kept away from to the inside of valve outer wall is installed filtering component, filtering component includes the block circle, the block circle is connected with the inside both sides block of valve outer wall, the bottom fixedly connected with filter screen of block circle, fixed cover has been cup jointed to one side bottom that the valve outer wall is close to the filter screen, fixed knob is installed to the both sides of fixed cover, fixed knob runs through fixed cover and valve outer wall fixed connection.

Furthermore, a cone-shaped net is installed at the top of the filter screen, the top end of the cone-shaped net is fixedly connected with the clamping ring, and the bottom end of the cone-shaped net is fixedly connected with the inlet ring.

The utility model has the advantages that:

the impact force brought by water flow enables the non-return rod to rotate on the rotating seat, the water flow penetrates through the non-return rod to impact the second sliding plate, the second sliding plate is driven to slide on the second sliding groove, the first sliding plate is driven to slide on the first sliding groove by the sliding of the second sliding plate, the contraction of the contraction spring and the contraction rod is enabled to be achieved, the water flow enters the tail end of the non-return valve, the movable rubber pad is installed between the limiting block and the outer wall of the valve, the water flow can be prevented from seeping out, the rusting of the non-return valve is prevented, the resistance brought by the connection of the installation block and the installation groove clamping enables the second sliding plate to have a certain fixing effect, when the water flow is reduced, the second sliding plate is rebounded to the original position due to the reduction of the pressure of the contraction spring and the contraction rod, the water flow is prevented from flowing back, when the second sliding plate is damaged in long-time use, the water flow can flow back to the position between the non-return mechanism and the rotating assembly, the non-return rod is enabled to be attached to the T-type block through the torsion spring installed between the rotating seat and the non-return rod, and the secondary blocking effect is achieved.

The filter screen through the installation can filter the great impurity of aquatic, through the design of cone type net, when rivers reduce, the water in the water pipe can flow back, takes away the impurity in the filter screen when can preventing the rivers backward flow through the cone type net, has increased check valve's life.

Drawings

The present invention will be further described with reference to the accompanying drawings.

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

FIG. 2 is a schematic view of the overall operation structure of the present invention;

fig. 3 is a schematic structural view of the torsion spring of the present invention;

fig. 4 is a schematic view of the connection structure of the middle cone-shaped net and the fastening ring of the present invention.

In the figure: 1. an outer wall of the valve; 2. a non-return mechanism; 201. a fixed plug; 202. a limiting block; 203. a rubber pad; 204. a retracting lever; 205. a retraction spring; 206. a first sliding groove; 207. a first sliding plate; 208. a push rod; 209. a second sliding plate; 210. a second sliding groove; 211. mounting blocks; 212. mounting grooves; 213. a limiting plate; 3. a rotating assembly; 301. a rotating seat; 302. a check rod; 303. a torsion spring; 304. a T-shaped block; 4. a filter assembly; 401. a clamping ring; 402. a filter screen; 403. a conical net; 404. an inlet ring; 405. fixing a sleeve; 406. and fixing the knob.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1-4, a check valve for a fire fighting pipeline comprises a valve outer wall 1, a check mechanism 2 is installed inside the valve outer wall 1, the check mechanism 2 comprises a fixed plug 201, two ends of the fixed plug 201 are welded with limit blocks 202, the limit blocks 202 are located at the opening at the top end of the valve outer wall 1, a rubber pad 203 is connected between the limit blocks 202 and the valve outer wall 1 in a matching manner, a movable rubber pad 203 is installed between the limit blocks 202 and the valve outer wall 1, can prevent water seepage and rust of the check valve, a contraction rod 204 is arranged inside the fixed plug 201, a contraction spring 205 is sleeved on the outer side wall of the contraction rod 204, the contraction rod 204 is fixedly connected with the fixed plug 201, first sliding grooves 206 are formed in two sides inside the fixed plug 201, a first sliding plate 207 is fixedly connected to the bottom end of the contraction rod 204, the first sliding plate 207 is slidably connected with the first sliding grooves 206, a push rod 208 is symmetrically and fixedly connected to the bottom end of the first sliding plate 207, limiting plates 213 are fixedly connected to two ends of the push rod 208, the limiting plates 213 are fixedly connected with the first sliding plate 207 and the second sliding plate 209, the connection between the pushing rod 208 and the first sliding plate 207 and the second sliding plate 209 is more stable, the second sliding plate 209 is installed at the bottom end of the pushing rod 208, a second sliding groove 210 is opened at one side of the inside of the valve outer wall 1 close to the pushing rod 208, one end of the second sliding plate 209 is connected with the second sliding groove 210 in a sliding manner, one end of the second sliding plate 209 far away from the second sliding groove 210 is fixedly connected with an installation block 211, one side of the inside of the valve outer wall 1 close to the installation block 211 is opened with an installation groove 212, the installation block 211 is connected with the installation groove 212 in a matching manner, the resistance caused by the engagement of the mounting block 211 with the mounting groove 212 provides a certain fixing effect to the second sliding plate 209.

The rotating assembly 3 is installed at one end, away from the check mechanism 2, of the valve outer wall 1, the rotating assembly 3 comprises a rotating seat 301, the top end of the rotating seat 301 is fixedly connected with the top side of the interior of the valve outer wall 1, the bottom end of the rotating seat 301 is rotatably connected with a check rod 302, a torsion spring 303 is installed between the check rod 302 and the rotating seat 301, a T-shaped block 304 is installed at the bottom of the check rod 302, the bottom end of the T-shaped block 304 is fixedly connected to the bottom side of the interior of the valve outer wall 1, and one end, away from the rotating seat 301, of the check rod 302 is connected with the T-shaped block 304 in an adaptive mode.

The valve outer wall 1 is characterized in that a filtering component 4 is installed at one end, far away from the rotating component 3, of the valve outer wall 1, the filtering component 4 comprises a clamping ring 401, the clamping ring 401 is connected with two sides of the inside of the valve outer wall 1 in a clamping mode, a filtering net 402 is fixedly connected to the bottom end of the clamping ring 401, a conical net 403 is installed at the top of the filtering net 402, the top end of the conical net 403 is fixedly connected with the clamping ring 401, an inlet ring 404 is fixedly connected to the bottom end of the conical net 403, through the design of the conical net 403, water can flow into the check valve through the inlet ring 404, when the water flow is reduced, water in a water pipe connected with the check valve can flow back, impurities in the filtering net 402 can be prevented from being taken away through the conical net 403 when the water flow flows back, the service life of the check valve is prolonged, a fixing sleeve 405 is sleeved at the bottom end of one side, close to the filtering net 402, of the valve outer wall 1, fixing knobs 406 are installed at two sides of the fixing sleeve 405, and the fixing knobs 406 penetrate through the fixing sleeve 405 and are fixedly connected with the valve outer wall 1.

The utility model discloses a theory of operation:

the check rod 302 rotates on the rotating seat 301 by the impact force caused by water flow, the water flow passes through the check rod 302 to impact the second sliding plate 209, thereby driving the second sliding plate 209 to slide on the second sliding groove 210, the sliding of the second sliding plate 209 drives the pushing rod 208 to move upwards, the pushing rod 208 moves upwards to drive the first sliding plate 207 to slide on the first sliding groove 206, so that the contraction spring 205 and the contraction rod 204 contract, thereby the water flow enters the end of the check valve, the leakage of the water flow can be prevented by installing the movable rubber pad 203 between the limiting block 202 and the valve outer wall 1, the rusting of the check valve is prevented, the resistance caused by the clamping connection of the installation block 211 and the installation groove 212 brings a certain fixing effect to the second sliding plate 209, when the water flow is reduced, the pressure of the contraction spring 205 and the contraction rod 204 is reduced, so that the second sliding plate 209 rebounds to the original position, the backflow of the water flow is prevented, and when the second sliding plate 209 is damaged for a long time, the water flow can flow back to the check mechanism 2 and the rotating assembly 3, and the check rod 302 and the T type block 304 can be attached to the second sliding plate 304 by the torsion spring installed between the rotating seat 301 and the check rod 302.

Can filter the great impurity in the aquatic through the filter screen 402 of installation, through the design of cone type net 403, rivers can pass into the inlet ring 404 and flow to in the check valve, when rivers reduce, the water in the water pipe of connecting the check valve can flow back, can prevent through cone type net 403 that the impurity in the filter screen 402 is taken away when rivers flow back, has increased the life of check valve.

Although an embodiment of the present invention has been described in detail, the description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. The check valve for the fire fighting pipeline comprises a valve outer wall (1) and is characterized in that a check mechanism (2) is mounted inside the valve outer wall (1), the check mechanism (2) comprises a fixed plug (201), limiting blocks (202) are welded at two ends of the fixed plug (201), a contraction rod (204) is mounted inside the fixed plug (201), a contraction spring (205) is sleeved on the outer side wall of the contraction rod (204), the contraction rod (204) is fixedly connected with the fixed plug (201), first sliding grooves (206) are formed in two sides inside the fixed plug (201), a first sliding plate (207) is fixedly connected to the bottom end of the contraction rod (204), the first sliding plate (207) is slidably connected with the first sliding grooves (206), the bottom end of the first sliding plate (207) is symmetrically and fixedly connected with pushing rods (208), a second sliding plate (209) is mounted at the bottom end of the pushing rods (208), a second sliding plate (210) is formed in one side, close to the pushing rods (208), inside the valve outer wall (1), and one end of the second sliding plate (209) is slidably connected with the second sliding grooves (210).

2. The check valve for a fire fighting pipeline of claim 1, characterized in that: one end, far away from the second sliding groove (210), of the second sliding plate (209) is fixedly connected with an installation block (211), one side, close to the installation block (211), of the inner portion of the outer wall (1) of the valve is provided with an installation groove (212), and the installation block (211) is in adaptive connection with the installation groove (212).

3. The check valve for a fire fighting pipeline of claim 1, characterized in that: and two ends of the push rod (208) are fixedly connected with limit plates (213), and the limit plates (213) are fixedly connected with the first sliding plate (207) and the second sliding plate (209).

4. The check valve for a fire fighting pipeline of claim 1, wherein: the limiting block (202) is located at an opening at the top end of the valve outer wall (1), and a rubber pad (203) is connected between the limiting block (202) and the valve outer wall (1) in an adaptive mode.

5. The check valve for a fire fighting pipeline of claim 1, characterized in that: valve outer wall (1) is inside to be kept away from the one end of check mechanism (2) and to install rotating assembly (3), rotating assembly (3) are including rotating seat (301), the top fixed connection who rotates seat (301) and the inside top side of valve outer wall (1), the bottom of rotating seat (301) is rotated and is connected with check rod (302), install torsion spring (303) between check rod (302) and rotation seat (301), T type piece (304) are installed to the bottom of check rod (302), the bottom fixed connection of T type piece (304) is in the inside bottom side of valve outer wall (1), check rod (302) are kept away from the one end and the T type piece (304) adaptation connection of rotating seat (301).

6. The check valve for a fire fighting pipeline of claim 1, characterized in that: the utility model discloses a valve, including valve outer wall (1), valve outer wall (1) and valve outer wall (3), the one end of keeping away from rotating assembly (3) is kept away from to the inside of valve outer wall (1) installs filtering component (4), filtering component (4) are including block circle (401), block circle (401) and valve outer wall (1) inside both sides block are connected, the bottom fixedly connected with filter screen (402) of block circle (401), fixed cover (405) have been cup jointed to one side bottom that valve outer wall (1) is close to filter screen (402), fixed knob (406) are installed to the both sides of fixed cover (405), fixed knob (406) run through fixed cover (405) and valve outer wall (1) fixed connection.

7. A check valve for a fire fighting pipe, according to claim 6, characterized in that; the top of filter screen (402) is installed cone type net (403), the top and block circle (401) fixed connection of cone type net (403), the bottom fixed connection of cone type net (403) has inlet ring (404).