CN219623307U - Valve clack upper-mounted clamp fire control check valve - Google Patents

Abstract

The utility model provides a clamp fire-fighting check valve with an upper-mounted valve clack, which belongs to the field of check valves and comprises a valve body, a valve cover and the valve clack, wherein the valve clack is rotatably connected to the lower end of the valve cover, a mounting opening is formed in the valve body, the valve clack extends into the valve body from the mounting opening, the valve cover is detachably connected to the upper end of the valve body through an elastic part and is attached to a valve seat of the valve body, a connecting frame is arranged at the lower end of the valve cover, a transmission rod is arranged on the connecting frame, the valve clack is rotatably arranged on the transmission rod, the elastic part comprises two torsion springs sleeved on the transmission rod relatively, the end part of the upward leading-out of the torsion spring is an upper spring part, and the end part of the downward leading-out of the torsion spring is connected to form a lower spring part to be matched with the rear end of the valve clack. The valve clack has the advantages that the valve clack can be conveniently detached and installed, the valve can be quickly maintained without being detached, and the valve clack can be automatically closed while the tightness is ensured.

Description

Valve clack upper-mounted clamp fire control check valve

Technical Field

The utility model belongs to the field of check valves, and particularly relates to a clamp fire check valve with an upper-mounted valve clack.

Background

In fire-fighting systems, check valves are generally installed at the outlet of fire-fighting water pumps, and function to prevent water in the fire-fighting pipe network from flowing back into the fire-fighting water pump or fire-fighting water pool, and also function to protect the water discharge pump and prevent water hammer from damaging the water pump and other equipment.

The traditional fire control check valve adopts the valve clack and sealing component and valve gap as an integer, and the installation of valve clack is changed and is taken out and put into from the side pipeline, is inconvenient for quick maintenance.

The utility model discloses a soft and hard sealed fire control check valve for CN202022425833.6, its technical scheme adopts the lower extreme with the valve clack articulated at the valve gap, and when rivers forward flow, rivers drive the valve clack and open, and when rivers reverse flow, rivers drive the valve clack and close, prevent against current.

The method only depends on the water flow direction to drive the valve clack to be closed, the switching speed and the speed for cutting off the water flow are slower, the valve clack cannot be actively closed to generate leakage conditions, and the method only depends on the water flow direction and cannot be suitable for other places, so that the working efficiency is reduced.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide the clamp fire check valve with the upper-mounted valve clack, which is convenient to detach and mount, can be quickly maintained without detaching the valve, and can be automatically closed while ensuring the tightness.

In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a valve clack facial make-up formula clamp fire control check valve, includes valve body, valve gap and valve clack, the rotatable coupling of valve clack is in the lower extreme of valve gap be equipped with the installing port on the valve body, the valve clack is followed the installing port stretches into in the valve body, through elastomeric element with the valve seat of valve body is laminated mutually, the valve gap can be dismantled and be connected the upper end of valve body.

Further, the lower extreme of valve gap is provided with the link the side of link is provided with the block platform be provided with the transfer line on the link, the valve clack rotatable setting is in on the transfer line.

Further, the elastic component includes two relatively arranged torsional springs, the torsional springs are sleeved on the transmission rod, the two ends of the upward leading-out of the torsional springs are upper spring parts, the upper spring parts are close to the inner side of the connecting frame, and the two ends of the downward leading-out of the torsional springs are connected to form lower spring parts which are matched with the rear end of the valve clack.

Further, the lower spring part is positioned at one side opposite to the upper spring part, and the upper spring part is attached to the inner wall of the connecting frame.

Further, a stress table is arranged at the lower end of the clamping table, an inclined plane is arranged at the side end of the stress table, the lower spring part is positioned at the same side of the upper spring part, and the upper spring part is clamped with the inclined plane.

Further, the front end of the valve clack is detachably connected with a valve clack sealing gasket, and the rear end of the valve clack is provided with an outwards protruding fixing part for being matched in the lower spring part.

Further, an A detection port is formed in the lower end of the valve body water inlet cavity, a B detection port is formed in the lower end of the valve body water outlet cavity, and the A detection port and the B detection port are both used for being connected with an external valve body.

Further, the A detection port and the B detection port are both in threaded connection with screws.

Further, the valve cover is connected with the upper end of the valve body through a fastening bolt, and a valve cover sealing gasket is arranged between the valve cover and the upper end of the valve body.

Further, the valve clack sealing gasket adopts a rubber plate.

The utility model has the advantages and positive effects that:

due to the adoption of the technical scheme, compared with the valve clack, the sealing assembly and the valve cover which are integrally adopted, the valve clack is rotatably arranged below the valve cover, so that the check valve can be replaced without integral disassembly, and the sealing performance of the valve cover sealing gasket is further improved due to the arrangement of the valve cover sealing gasket and the valve clack sealing gasket.

Compared with the valve clack closing control according to the water flow direction, the valve clack can be automatically attached to the valve seat through the arrangement of the elastic component, the valve clack can be attached to the valve seat through the pressure of the elastic component, the tightness is enhanced, the application range is smooth, and the water flow can be cut off in time.

The arrangement of the detection port A and the detection port B is connected with the external detection valve, so that the pressure difference before and after the split is conveniently known, and the split type sewage draining valve is connected with the external sewage draining valve to play a sewage draining function.

Drawings

FIG. 1 is an internal cross-sectional view of the present utility model;

FIG. 2 is a schematic view of the structure of the valve clack of the present utility model;

FIG. 3 is a schematic view of the interior of the valve body of the present utility model;

FIG. 4 is a schematic view of another embodiment of the elastic member of the present utility model;

fig. 5 is a schematic view of another embodiment of the elastic member and the valve flap of the present utility model.

In the figure:

1. a valve body; 11. a valve seat; 12. a mounting port; 13. a, detecting a port; 14. a detection port B;

2. a valve cover; 21. a clamping table; 22. a force bearing table; 23. a connecting frame;

3. a fastening bolt; 4. a valve cover gasket; 5. a transmission rod;

6. an elastic member; 61. an upper spring part; 62. a lower spring portion;

7. a valve flap gasket; 71. a connecting bolt; 72. a pressing plate;

8. a valve flap; 81. a fixing part; 82. and (5) connecting a rod.

Detailed Description

The utility model is further described below with reference to examples and figures.

As shown in fig. 1 to 5, the present embodiment provides a valve clack top-mounted clamp fire check valve, which comprises a valve body 1, a valve cover 2 and a valve clack 8, wherein the valve clack 8 is rotatably connected at the lower end of the valve cover 2, the upper end of the valve body 1 is provided with a mounting opening 12, the valve clack 8 stretches into the valve body 1 from the mounting opening 12, the valve cover 2 is connected with the upper end of the valve body 1 through a fastening bolt 3, for tightening and sealing, a valve cover sealing gasket 4 is arranged between the valve rod 2 and the upper end of the valve body 1, a valve seat 11 is arranged at the water inlet choke in the valve body 1, and the valve clack 8 can be automatically attached to the valve seat 11.

The lower end of the valve cover 2 is provided with a connecting frame 23, the side end of the connecting frame 23 is sequentially provided with a clamping table 21 and a stress table 22 from top to bottom, the distance between the side end of the clamping table 21 and the side end of the connecting frame 23 is matched with the width of the mounting opening 12, the side end of the stress table 22 is provided with an inclined clamping inclined plane, and the lower end of the connecting frame 23 is provided with a transmission rod 5 for connecting the valve clack 8.

Two connecting rods 82 are oppositely arranged on two sides of the rear end of the valve clack 8, the connecting rods 82 are rotatably connected to the transmission rod 5, the valve clack 8 can rotate along the transmission rod 5, the diameter of the valve clack 8 is slightly larger than the caliber of the valve seat 11, the valve clack sealing gasket 7 is detachably connected to the front end of the valve clack 8, namely, the end adjacent to the valve seat 11, the sealing performance of the valve clack 8 to the valve seat 11 can be further improved, specifically, the valve clack sealing gasket 7 is pressed on the valve clack 8 through a pressing plate 72, a connecting bolt 71 penetrates through the pressing plate 72 and is connected with the central thread of the valve clack 8, the pressing plate 72 is used for pressing the valve clack sealing gasket 7 through tightening the connecting bolt 71, the valve clack sealing gasket 7 is convenient to replace, thread anti-loosening glue is coated on the connected threads, the connecting bolt 71 is prevented from loosening due to water flow impact, the valve clack sealing gasket 7 adopts a rubber plate, and an outwards-protruding fixing part 81 is arranged at the center of the rear end of the valve clack 8.

Including elastomeric element 6, elastomeric element 6 includes two relative torsional springs that set up, and two torsional spring sleeves are established on transfer line 5 and are located between two connecting rods 82, and two tip that upwards draw forth on the torsional spring are spring portion 61, and the spring portion 61 that draws forth is located the inboard of transfer line 5, is close to the inboard of link 23 promptly, and two tip that draws forth downwards are arc on the torsional spring and link to each other and be spring portion 62 down, and fixed part 81 cooperation is in being arc spring portion 62 down, plays spacing effect.

As shown in fig. 1 to 2, in the present embodiment, the lower spring portion 62 is located on the opposite side to the upper spring portion 61, and the upper end of the lower spring portion 62 is folded outwardly, the lower end thereof abuts against the rear end of the valve flap 8, and the upper spring portion 62 abuts against the inner wall of the connection frame 23.

As shown in fig. 4 to 5, in another embodiment, the lower spring portion 62 is located on the same side as the upper spring portion 61, the lower spring portion 62 is attached to the rear end of the valve flap 8, and the upper spring portion 62 engages with the inclined surface of the force receiving table 22.

The lower extreme in valve body 1 intake chamber is equipped with A detection mouth 13, is equipped with B detection mouth 14 in the lower extreme in play the water chamber, and two detection mouths are used for connecting outside measuring valve and blowoff valve, play quick measuring valve front and back pressure differential and blowdown function, and A detection mouth 13 and B detection mouth 14 are the screw hole, all block up it tightly through the screw of screwing in.

The working procedure of this example:

when the valve clack 8 needs to be replaced, the fastening bolt 3 is unscrewed, and the valve cover 2 is lifted upwards to enable the valve cover 2 to take out the valve clack 8 together, so that the valve clack 8 and the valve clack sealing gasket 7 are replaced.

The water pressure of rivers promotes valve clack 8 and upwards rotates, and valve clack 8 opens, and the lower spring portion 62 that sets up on valve clack 8 drives the torsional spring, makes upper spring portion 61 receive the pressure, and when rivers no longer pass through, or rivers are less, upper spring portion 61 resets, drives lower spring portion 62 and makes valve clack 8 lock on disk seat 11, realizes automatic closure.

The beneficial effects of the utility model are as follows:

compared with a check valve which integrates a valve cover, a valve clack and a valve body, the check valve is characterized in that the valve cover 2 and the valve body 1 are arranged separately, the valve clack 8 is connected to the lower end of the valve cover 2, so that the valve cover 2 can bring the valve clack 8 out, split installation is realized, the valve clack 8 is convenient to replace, the valve cover 2 and the valve body 1 are connected by adopting the fastening bolts 3, the disassembly and the installation of the valve cover 2 are convenient, the sealing of the valve cover sealing gasket 4 is enhanced, leakage is prevented, the valve clack sealing gasket 7 is connected with the pressing plate 72 at the front end of the valve clack 8 through the connecting bolts 71, on one hand, the sealing of the valve clack 8 and the valve seat 11 is enhanced, and on the other hand, the connection mode is also convenient for the replacement of the valve clack sealing gasket 7.

Compared with the valve clack hinged on the bracket and driven to rotate by the water flow direction to prevent the reverse flow, the valve clack structure can enable the valve clack 8 to be actively attached to the valve seat 11 when the water flow is small or no water flows through, can rapidly cut off the water flow, and does not need to prevent the reverse flow when the water flow flows into the valve body 1 in the reverse direction.

The automatic laminating of valve clack 8 and disk seat 11 has been realized in setting up of elastomeric element 6, through the atress of last spring portion 61, makes down spring portion 62 compress tightly valve clack 8, and the setting of the upper fixed part 81 of valve clack 8 can prevent down spring portion 62 off tracking and produce the displacement, has played spacing effect.

The A detection port 13 and the B detection port 14 arranged at the lower end of the valve body 1 can be connected with an external measuring valve and a blow-down valve, so that the functions of measuring the pressure difference of the front and the rear of the valve body and timely blow down can be achieved, and the two detection ports are threaded holes.

The foregoing detailed description of one or more embodiments of the utility model has been presented for purposes of illustration and description, but is not intended to limit the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.

Claims (10)

1. The utility model provides a valve clack facial make-up formula clamp fire control check valve, includes valve body (1), valve gap (2) and valve clack (8), its characterized in that: the valve clack (8) is rotatably connected to the lower end of the valve cover (2), an installation opening (12) is formed in the valve body (1), the valve clack (8) stretches into the valve body (1) from the installation opening (12), the valve clack is attached to the valve seat (11) of the valve body (1) through an elastic component (6), and the valve cover (2) is detachably connected to the upper end of the valve body (1).

2. The flap top-mounted clip fire check valve of claim 1, wherein: the valve cover is characterized in that a connecting frame (23) is arranged at the lower end of the valve cover (2), a clamping table (21) is arranged at the side end of the connecting frame (23), a transmission rod (5) is arranged on the connecting frame (23), and the valve clack (8) is rotatably arranged on the transmission rod (5).

3. The flap top-mounted clip fire check valve of claim 2, wherein: the elastic component (6) includes two relative torsional springs that set up, the torsional spring cover is established on transfer line (5), two the tip that the torsional spring was drawn forth upwards is spring portion (61), upper spring portion (61) are close to the inboard of link (23), two the tip that the torsional spring was drawn forth downwards links to each other and forms lower spring portion (62), with the rear end of valve clack (8) cooperatees.

4. A flap top-mounted clip fire check valve as defined in claim 3, wherein: the lower spring part (62) is positioned on the side opposite to the upper spring part (61), and the upper spring part (61) is attached to the inner wall of the connecting frame (23).

5. A flap top-mounted clip fire check valve as defined in claim 3, wherein: the lower end of the clamping table (21) is provided with a stress table (22), the side end of the stress table (22) is provided with an inclined plane, the lower spring part (62) is positioned on the same side of the upper spring part (61), and the upper spring part (61) is clamped with the inclined plane.

6. A flap top-mounted clip fire check valve as defined in claim 3, wherein: the front end of the valve clack (8) is detachably connected with a valve clack sealing gasket (7), and the rear end of the valve clack (8) is provided with an outwards protruding fixing part (81) for being matched in the lower spring part (62).

7. The flap top-mounted clip fire check valve of claim 1, wherein: the lower end of the water inlet cavity of the valve body (1) is provided with an A detection port (13), the lower end of the water outlet cavity of the valve body (1) is provided with a B detection port (14), and the A detection port (13) and the B detection port (14) are both used for being connected with an external valve body.

8. The flap top-mounted clip fire check valve of claim 7, wherein: screws are connected to the A detection port (13) and the B detection port (14) in a threaded manner.

9. The flap top-mounted clip fire check valve of claim 1, wherein: the valve cover (2) is connected with the upper end of the valve body (1) through a fastening bolt (3), and a valve cover sealing gasket (4) is arranged between the valve cover (2) and the upper end of the valve body (1).

10. The flap top-mounted clip fire check valve of claim 6, wherein: the valve clack sealing gasket (7) adopts a rubber plate.