CN222669018U

CN222669018U - Anti-backflow fire valve

Info

Publication number: CN222669018U
Application number: CN202421439104.8U
Authority: CN
Inventors: 王营军
Original assignee: Tianjin Dongyi Taohong Intelligent Control Equipment Co ltd
Current assignee: Tianjin Dongyi Taohong Intelligent Control Equipment Co ltd
Priority date: 2024-06-24
Filing date: 2024-06-24
Publication date: 2025-03-25
Anticipated expiration: 2034-06-24

Abstract

The utility model relates to the technical field of fire valves, specifically a fire valve for preventing backflow, comprising a valve body, one side of the valve body being fixedly connected to a water inlet pipe, and the other side of the valve body being fixedly connected to a water outlet pipe. The utility model is characterized in that under the impact of water flow, a rotating column is rotated on the inner side of a connecting frame, thereby driving two groups of connecting plates to rotate toward the valve body, thereby allowing water flow to enter the interior of the valve body. When water flows out from the water outlet pipe, under the impact of the water flow, a connecting plate connected to the inner side of the water outlet pipe is impacted, so that the rotating column is rotated on the inner side of the connecting frame, thereby driving the two groups of connecting plates to rotate in the opposite direction toward the valve body. When the valve body is closed, the connecting plate is no longer impacted by the water flow, so that under the elastic action of the torsion spring, the connecting plate is reset, thereby blocking the water inlet pipe and the water outlet pipe, thereby preventing water flow from flowing back.

Description

Anti-backflow fire valve

Technical Field

The utility model relates to the technical field of fire control valves, in particular to a backflow-preventing fire control valve.

Background

The fire-fighting valve is an important accessory for controlling industrial and building pipelines, and is composed of a valve body, an opening and closing mechanism and a valve cover, and has the advantages of simple structure, reliable sealing, light opening, long service life, convenient maintenance and the like, so that the fire-fighting valve is widely applied to various pipelines of systems such as water supply and drainage, building fire-fighting and the like.

Disclosure of utility model

The utility model aims to provide a backflow-preventing fire valve, which aims to solve the problem that the use of the fire valve is affected because the backflow-preventing function is not available when the fire valve is used, and the phenomenon of backflow of water flow occurs when the fire valve is closed.

In order to achieve the above purpose, the utility model provides a technical scheme that the anti-backflow fire valve comprises a valve body, wherein one side of the valve body is fixedly connected with a water inlet pipe, the other side of the valve body is fixedly connected with a water outlet pipe, the upper surface of the valve body is rotationally connected with a swivel, the outer surfaces of the water inlet pipe and the water outlet pipe are fixedly connected with flanges, the inner side of the water outlet pipe is fixedly connected with a connecting frame, the inner side of the connecting frame is rotationally connected with a swivel post, the outer surface of the swivel post is fixedly connected with a fixed post, the outer surface of the fixed post is fixedly connected with a torsion spring, the outer surface of the torsion spring is fixedly connected with a connecting plate, and the outer surface of the connecting frame is fixedly connected with a limiting plate.

Preferably, the spout has been seted up to the inboard of flange, the inboard fixedly connected with spring of spout, the lower surface fixedly connected with inserted bar of spring, the lower surface of inserted bar inserts and closes and be connected with the collar, the surface fixedly connected with sealing gasket of collar.

Preferably, the connecting frame is in a circular ring shape, cylindrical grooves are formed in two sides of the inner side of the connecting frame, the rotating column rotates to be connected with the inner side of the groove, and the rotating column rotates on the inner side of the connecting frame, so that the connecting plate can rotate on the inner side of the connecting frame.

Preferably, the rotating column is cylindrical, the connecting plate is semicircular, the cylindrical groove is formed in the inner side of the connecting plate, the rotating column rotates to be connected with the inner side of the groove, the torsion spring is spiral, one end of the torsion spring is fixedly connected with the connecting plate, the other end of the torsion spring is fixedly connected with the rotating column, and the rotating column is enabled to rotate at the inner side of the connecting frame due to the fact that the connecting plate connected to the inner side of the water inlet pipe is impacted when water enters water, so that two groups of connecting plates are driven to rotate towards the valve body, water enters the valve body, when water flows out of the water outlet pipe, the connecting plate connected to the inner side of the water outlet pipe is impacted, so that the rotating column rotates at the inner side of the connecting frame, and accordingly two groups of connecting plates are driven to rotate towards the opposite direction of the valve body, water flows out of the water outlet pipe, and when the valve body is closed, the impact of water is lacked, and the connecting plates are enabled to reset under the limiting effect of the limiting plate under the elastic effect of the torsion spring, so that backflow prevention can be achieved.

Preferably, the limiting plate is in a circular ring shape, the limiting plate is fixedly connected with one side of the reconnection frame, and the connecting frame, the rotating column, the fixed column, the torsion spring, the connecting plate and the limiting plate are respectively arranged to be connected with the inner sides of the water inlet pipe and the water outlet pipe, and the limiting plate has the functions of limiting through the rotation of the connecting plate and the limiting plate, so that the connecting plate can be reset to achieve the purpose of backflow prevention.

Preferably, the spout is cylindrical shape, the spout is two sets of inboard upper and lower both ends of seting up at the flange, the spring is spiral form, spring fixed connection is between the inboard of spout and inserted bar, the inserted bar is cylindrical shape, the bottom of inserted bar is hemispherical shape, and its effect can extrude the inserted bar when collar sliding connection is to the inboard of flange to make the inserted bar slide upwards in the inboard of spout, when the collar enters into the inboard of flange completely, under the elastic action of spring, the inserted bar can insert the inboard of the recess of seting up in collar upper end, thereby with collar fixed connection in the inboard of flange.

Preferably, the collar is ring form, the recess with collar looks adaptation is seted up to the surface of flange, sealed pad is ring form, sealed pad swing joint is at the surface of flange, its effect is through the inboard with collar fixed connection at the flange to with sealed pad fixed connection at the surface of flange, thereby conveniently with flange and water piping connection, thereby can be quick install the water pipe to be connected to the valve body on, conveniently carry out fire control operation, prevent still need manual the adding sealed pad when the installation, thereby make the installation loaded down with trivial details.

Compared with the prior art, the utility model has the beneficial effects that:

1. When the valve body is used, water enters the inner side of the valve body from the water inlet pipe and flows out from the water outlet pipe, when the water passes to the inner side of the water inlet pipe, the connecting plates connected to the inner side of the water inlet pipe are impacted under the impact of water flow, so that the rotating column can rotate on the inner side of the connecting frame, and the two groups of connecting plates are driven to rotate towards the direction of the valve body, so that the water flow enters the valve body, when the water flows out from the water outlet pipe, the connecting plates connected to the inner side of the water outlet pipe are impacted under the impact of the water flow, the rotating column can rotate on the inner side of the connecting frame, and the two groups of connecting plates are driven to rotate towards the opposite direction of the valve body, so that the water flow is not impacted when the valve body is closed, and the connecting plates are reset under the elastic action of the torsion spring, so that the water inlet pipe and the water outlet pipe are blocked, and the use of the valve body is prevented.

2. Through the recess inboard of seting up the collar sliding connection to the swivel surface, because the bottom of inserted link is spherically to after collar and inserted link contact, under the extrusion effect of collar again, make the inserted link upwards slide again the inboard of spout, enter into the inboard of flange completely when the collar is, thereby the inserted link downwards slides under the elastic action of spout again and inserts in the recess of seting up to collar upper surface, thereby with collar fixed connection flange's inboard again, convenience and water piping connection, and the leakproofness is better.

Drawings

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

FIG. 2 is a schematic side perspective view of the structure of the present utility model;

FIG. 3 is a partial schematic cross-sectional perspective view of the present utility model;

FIG. 4 is a schematic perspective sectional view of the water outlet pipe in FIG. 3 according to the present utility model;

FIG. 5 is an enlarged schematic view of the structure of FIG. 3A according to the present utility model;

fig. 6 is an enlarged schematic view of the structure at B in fig. 4 according to the present utility model.

In the figure, 1, a valve body; 2, a water inlet pipe, 3, a water outlet pipe, 4, a swivel, 5, a flange, 6, a connecting frame, 7, a swivel post, 8, a fixed post, 9, a torsion spring, 10, a connecting plate, 11, a limiting plate, 12, a chute, 13, a spring, 14, an inserting rod, 15, a mounting ring, 16 and a sealing gasket.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only 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.

Referring to fig. 1-6, an embodiment of the present utility model is provided:

The utility model provides a fire control valve of anti-reflux, which comprises a valve body 1, one side fixedly connected with inlet tube 2 of valve body 1, the opposite side fixedly connected with outlet pipe 3 of valve body 1, the upper surface of valve body 1 rotates and is connected with swivel 4, the surface of inlet tube 2 and outlet pipe 3 is fixedly connected with flange 5 all, the inboard fixedly connected with link 6 of outlet pipe 3, the inboard rotation of link 6 is connected with column 7, column 7's surface fixedly connected with fixed column 8, column 8's surface fixedly connected with torsional spring 9, torsional spring 9's surface fixedly connected with connecting plate 10, link 6's surface fixedly connected with limiting plate 11.

Further, a chute 12 is formed in the inner side of the flange 5, a spring 13 is fixedly connected to the inner side of the chute 12, an inserting rod 14 is fixedly connected to the lower surface of the spring 13, a mounting ring 15 is connected to the lower surface of the inserting rod 14 in an inserting mode, and a sealing gasket 16 is fixedly connected to the outer surface of the mounting ring 15.

Further, the connecting frame 6 is in a circular ring shape, two sides of the inner side of the connecting frame 6 are provided with cylindrical grooves, the rotating column 7 is rotationally connected with the inner side of the grooves, and the rotating column 7 is rotationally connected with the inner side of the connecting frame 6, so that the connecting plate 10 can be rotated on the inner side of the connecting frame 6.

Further, the rotating post 7 is cylindrical, the connecting plate 10 is semicircular, the cylindrical groove is formed in the inner side of the connecting plate 10, the rotating post 7 rotates to be connected with the inner side of the groove, the torsion spring 9 is spiral, one end of the torsion spring 9 is fixedly connected with the connecting plate 10, the other end of the torsion spring 9 is fixedly connected with the rotating post 7, the rotating post 7 can rotate at the inner side of the connecting frame 6 due to the fact that the connecting plate 10 connected to the inner side of the water inlet pipe 2 is impacted when water flows in, the two groups of connecting plates 10 are driven to rotate towards the valve body 1, water flows into the valve body 1, when water flows out of the water outlet pipe 3, the connecting plates 10 connected to the inner side of the water outlet pipe 3 are impacted due to the impact of the water flow, the rotating post 7 can rotate at the inner side of the connecting frame 6, the two groups of connecting plates 10 are driven to rotate towards the opposite direction of the valve body 1, and water flows out of the water outlet pipe 3.

Further, limiting plate 11 is the ring form, and limiting plate 11 fixed connection is one side of connecting frame 6 again, and connecting frame 6, swivel post 7, fixed column 8, torsional spring 9, connecting plate 10 and limiting plate 11 all become two sets of inboard that set up to connect again inlet tube 2 and outlet pipe 3 respectively, and its effect is through the rotation of connecting plate 10 and limiting plate 11 spacing for connecting plate 10 can reset, plays the purpose of anti-reflux.

Further, the chute 12 is in a cylindrical shape, the chute 12 is in two groups of grooves formed at the upper and lower ends of the inner side of the flange 5, the springs 13 are in spiral shapes, the springs 13 are fixedly connected between the inner side of the chute 12 and the inserted link 14, the inserted link 14 is in a cylindrical shape, the bottom of the inserted link 14 is in a hemispherical shape, the function of the inserted link is that when the mounting ring 15 is slidably connected to the inner side of the flange 5, the inserted link 14 is extruded to enable the inserted link 14 to slide upwards on the inner side of the chute 12, and when the mounting ring 15 completely enters the inner side of the flange 5, the inserted link 14 is inserted into the inner side of a groove formed at the upper end of the mounting ring 15 under the elastic action of the springs 13, so that the mounting ring 15 is fixedly connected to the inner side of the flange 5.

Further, collar 15 is ring form, the recess with collar 15 looks adaptation has been seted up to the surface of flange 5, sealed 16 is ring form, sealed 16 swing joint is at the surface of flange 5, its effect is through the inboard with collar 15 fixed connection at flange 5, thereby with sealed 16 fixed connection at the surface of flange 5, thereby the convenience is with flange 5 and water piping connection, thereby can be quick with water pipe installation be connected to on the valve body 1, the fire control operation is conveniently carried out, prevent still that the manual sealing 16 that adds when the installation, thereby make the installation loaded down with trivial details.

Working principle: through the inboard fixedly connected with link 6 at outlet pipe 3, the inboard rotation of link 6 is connected with column 7, the surface fixedly connected with fixed column 8 of column 7, the surface fixedly connected with torsional spring 9 of fixed column 8, the surface fixedly connected with connecting plate 10 of torsional spring 9, the surface fixedly connected with limiting plate 11 of link 6, when using valve body 1, water enters into the inboard of valve body 1 from inlet tube 2, flow out from outlet pipe 3 again, when water leads to the inboard of inlet tube 2, because under the impact of rivers, set up the connecting plate 10 of connecting in inlet tube 2 and receive the impact, make column 7 can rotate at the inboard of link 6, thereby drive two sets of connecting plates 10 and rotate towards valve body 1 direction, thereby make rivers enter into the inside of valve body 1, when rivers flow out from outlet pipe 3, under the impact of rivers, set up the connecting plate 10 of connecting in outlet pipe 3 inboard can receive the impact, thereby drive two sets of connecting plates 10 and rotate towards valve body 1 opposite directions, thereby make the valve body come out, when closing valve body 1, receive no impact at the connecting plate 10, thereby prevent that the effect from being used by torsion spring 2, thereby prevent that water flow 1 from flowing back under the impact, thereby, the effect is convenient to use of the connecting plate 2, thereby, the water outlet pipe 2 is prevented from flowing back under the impact.

Through having seted up spout 12 in the inboard of flange 5, spout 12's inboard fixedly connected with spring 13, spring 13's lower fixed surface is connected with inserted bar 14, inserted bar 14's lower surface is inserted and is connected with collar 15, collar 15's surface fixedly connected with sealed 16, through the recess inboard of sliding connection to the collar 15 surface seting up of swivel 4, because the bottom of inserted bar 14 is spherical, thereby after collar 15 contacts with inserted bar 14, under the extrusion effect of collar 15 again, make inserted bar 14 upwards slide in spout 12 again, be in the inboard of flange 5 when collar 15 enters into completely, thereby under the elastic action of spout 12 again, inserted bar 14 downwards slides and inserts into the recess of seting up in collar 15 upper surface, thereby with collar 15 fixed connection flange 5's inboard again, the convenience is connected with the water pipe, and the leakproofness is better.

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. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The anti-backflow fire valve comprises a valve body (1) and is characterized in that one side of the valve body (1) is fixedly connected with a water inlet pipe (2), the other side of the valve body (1) is fixedly connected with a water outlet pipe (3), the upper surface of the valve body (1) is rotationally connected with a swivel (4), the outer surfaces of the water inlet pipe (2) and the water outlet pipe (3) are fixedly connected with a flange (5), the inner side of the water outlet pipe (3) is fixedly connected with a connecting frame (6), the inner side of the connecting frame (6) is rotationally connected with a rotating column (7), the outer surface of the rotating column (7) is fixedly connected with a fixing column (8), the outer surface of the fixing column (8) is fixedly connected with a torsion spring (9), the outer surface of the torsion spring (9) is fixedly connected with a connecting plate (10), and the outer surface of the connecting frame (6) is fixedly connected with a limiting plate (11).

2. The anti-backflow fire valve according to claim 1, wherein a chute (12) is formed in the inner side of the flange (5), a spring (13) is fixedly connected to the inner side of the chute (12), an inserting rod (14) is fixedly connected to the lower surface of the spring (13), a mounting ring (15) is connected to the lower surface of the inserting rod (14) in an inserting mode, and a sealing gasket (16) is fixedly connected to the outer surface of the mounting ring (15).

3. The anti-backflow fire valve as set forth in claim 1, wherein the connecting frame (6) is in a circular ring shape, cylindrical grooves are formed in two sides of the inner side of the connecting frame (6), and the rotary column (7) is rotatably connected to the inner side of the grooves.

4. The anti-backflow fire valve according to claim 3, wherein the rotary column (7) is in a cylindrical shape, the connecting plate (10) is in a semicircular plate shape, a cylindrical groove is formed in the inner side of the connecting plate (10), the torsion spring (9) is in a spiral shape, one end of the torsion spring (9) is fixedly connected with the connecting plate (10), and the other end of the torsion spring (9) is fixedly connected with the rotary column (7).

5. The anti-backflow fire valve as set forth in claim 4, wherein the limiting plate (11) is in a circular shape, the limiting plate (11) is fixedly connected with one side of the reconnection frame (6), and the connecting frame (6), the rotating column (7), the fixing column (8), the torsion spring (9), the connecting plate (10) and the limiting plate (11) are respectively arranged inside the reconnection water inlet pipe (2) and the water outlet pipe (3).

6. The anti-backflow fire valve as set forth in claim 2, wherein the sliding groove (12) is in a cylindrical shape, the sliding groove (12) is in two groups of upper and lower ends arranged on the inner side of the flange (5), the spring (13) is in a spiral shape, the spring (13) is fixedly connected between the inner side of the sliding groove (12) and the inserted link (14), the inserted link (14) is in a cylindrical shape, and the bottom of the inserted link (14) is in a hemispherical shape.

7. The anti-backflow fire valve as set forth in claim 6, wherein the mounting ring (15) is in a circular ring shape, a groove matched with the mounting ring (15) is formed in the outer surface of the flange (5), the sealing gasket (16) is in a circular ring shape, and the sealing gasket (16) is movably connected to the outer surface of the flange (5).