CN209278562U

CN209278562U - Damping check valve

Info

Publication number: CN209278562U
Application number: CN201822020189.7U
Authority: CN
Inventors: 陈瑞鑫; 陈迪铭
Original assignee: Baichi Valve Technology Co Ltd
Current assignee: Baichi Valve Technology Co Ltd
Priority date: 2018-12-04
Filing date: 2018-12-04
Publication date: 2019-08-20
Anticipated expiration: 2028-12-04

Abstract

The utility model proposes a kind of structure is simple, production cost is low, it is not necessarily to flange between valve body and valve seat or is bolted, the damping check valve of integrally casting shaping, including valve body, valve seat, flap, valve shaft, the valve body offers inner cavity, the inner cavity lower end is water inlet, the inner cavity upper end is water outlet, the flap is set to the water inlet, limiting device is provided between the flap and valve body, the flap is installed with sealing device, the valve shaft lower end is fixedly arranged on the flap upper surface, the valve shaft upper end is arranged in the valve seat, the valve seat center offers the limit hole passed through for the valve shaft, the valve seat is located at the limit hole side and offers water-flowing trough, elasticity reset device is provided between the valve seat and flap, the valve seat periphery is provided with the first screw thread, the valve interior wall is provided with second Screw thread, the valve seat are threadedly engaged by first screw thread and second and are rotatably set in the valve body.

Description

Damping check valve

Technical field

The utility model relates to field of check valves, in particular to damping check valve.

Background technique

Damping check valve refers to be flowed and automatic open and close flap by medium itself, for preventing the valve of medium refluence, Also known as non-return valve, check valve, damping check valve reflux valve and counterbalance valve, check-valves belong to a kind of automatic valve, main function It is to prevent medium from flowing backwards, prevent pump and drive motor reversion and vessel media from releasing, check-valves can be divided mainly into rotation and open Formula check-valves (being rotated according to center of gravity) and lift check valve (being moved along axis), at present on the market lift check valve usually by valve Body by flange or is bolted with valve seat, and valve body and valve seat need to distinguish casting and forming, and must install between valve body and valve seat Sealing ring, the sealing ring service life, production cost was higher to that must be replaced.

Utility model content

Therefore, for above-mentioned problem, that the utility model proposes a kind of structures is simple, production cost is low, valve body and valve seat Between without flange or being bolted, the damping check valve of integrally casting shaping.

To realize above-mentioned technical problem, the solution that the utility model is taken are as follows: damping check valve, including valve body, valve Seat, flap, valve shaft, the valve body offer inner cavity, and the inner cavity lower end is water inlet, and the inner cavity upper end is water outlet, institute It states flap and is set to the water inlet, be provided between the flap and valve body for preventing the flap from skidding off the inner cavity Limiting device, the flap is fixedly installed the sealing device for sealing water inlet, and the valve shaft lower end is fixedly installed on The flap upper surface, the valve shaft upper end are arranged in the valve seat, and the valve seat center is offered to be passed through for the valve shaft Limit hole, the valve seat is located at the limit hole side and offers water-flowing trough, the valve shaft, flap and valve seat central axes weight It closes, the elasticity reset device for making the flap sealing contact at the water inlet is provided between the valve seat and flap, it is described Valve seat periphery is provided with the first screw thread, and the valve interior wall is provided with the second screw thread being threadedly engaged with described first, the valve Seat is threadedly engaged by first screw thread and second and is rotatably set in the valve body.

Further improved to be: the limiting device is retention bead, and the retention bead is fixedly installed on the valve body Inner wall.

Further improved to be: the sealing device is sealing ring, and the sealing ring surround and is set to the flap lower end Face.

Further improved to be: the elasticity reset device is spring, and the spring pocket is set to the valve shaft, the spring Upper end is inconsistent with valve seat, and the lower spring end and the flap are inconsistent.

By using preceding solution, the beneficial effects of the utility model are: valve seat is set to institute by helicitic texture Inner cavity is stated, valve body is not necessarily to through flange or is bolted with valve seat, and eliminates the sealing ring between valve body and valve seat, structure letter List, production cost are low.

Detailed description of the invention

Fig. 1 is the sectional view of the utility model damping check valve.

Fig. 2 is the top view of the utility model damping check valve.

Specific embodiment

Now in conjunction with the drawings and specific embodiments, the present invention will be further described.

With reference to Fig. 1, Fig. 2, revealed the utility model embodiment is damping check valve, including valve body 1, valve seat 2, flap 3, valve shaft 4, the valve body 1 offer inner cavity, and the inner cavity lower end is water inlet, and the inner cavity upper end is water outlet, the valve Valve 3 is set to the water inlet, is provided between the flap 3 and valve body 1 for preventing the flap 3 from skidding off the inner cavity Retention bead 11, the retention bead 11 is fixedly installed on 1 inner wall of valve body, and the flap 3 is fixedly installed for close Seal the sealing ring 31 of water inlet, the sealing ring 31 around being set to 3 lower end surface of flap, the sealing ring 31 can with it is described Retention bead 11 contradicts, and 4 lower end of valve shaft is fixedly installed on 3 upper surface of flap, and 4 upper end of valve shaft is arranged in institute Valve seat 2 is stated, 2 center of valve seat offers the limit hole 21 passed through for the valve shaft 4, and the valve seat 2 is located at the limit hole 21 sides offer water-flowing trough 22, and the valve shaft 4, flap 3 are overlapped with 2 central axes of valve seat, set between the valve seat 2 and flap 3 Being equipped with makes the flap 3 seal the spring 5 for contacting at the water inlet, and the spring 5 is sheathed on the valve shaft 4, the spring 5 Upper end and valve seat 2 are inconsistent, and 5 lower end of spring and the flap 3 are inconsistent, and 2 periphery of valve seat is provided with the first screw thread, 1 inner wall of valve body is provided with the second screw thread being threadedly engaged with described first, and the valve seat 2 passes through first screw thread and the Two are threadedly engaged and are rotatably set in the valve body 1.

When the valve body 1 is installed in pipeline connection, it is water outlet at the valve seat 2, is water inlet at the flap 3, When opening conduits switch, water flow flow to water inlet, is acted on by hydraulic pressure, and the flap 3 is extruded towards the valve seat direction, into The mouth of a river is opened, and water flow passes through, and when closing pipe switch, the flap 3 is extruded in the limit by 5 elastic force of spring effect Protrusion 11, makes inlet seal, and water can not flow back in pipeline, realizes non-return effect.

The utility model by the way that the valve seat to be rotatably set to the inner cavity of the valve body, eliminate valve seat and valve body it Between flange or bolt cost, also eliminate the cost of the sealing ring of valve body and valve seat junction, valve body integrally casting shaping, Production cost can have been saved in the case where not influencing use by the utility model.

The basic principles and main features and its advantage of the utility model, the technology people of the industry has been shown and described above Member only illustrates this described in above-described embodiment and explanation it should be appreciated that the present utility model is not limited to the above embodiments The principle of utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model also has various change And improvement, these various changes and improvements fall within the scope of the claimed invention, the utility model requires protection scope It is defined by the appending claims and its equivalent thereof.

Claims

1. damping check valve, including valve body, valve seat, flap, valve shaft, the valve body offers inner cavity, the inner cavity lower end be into The mouth of a river, the inner cavity upper end are water outlet, and the flap is set to the water inlet, is provided between the flap and valve body For preventing the flap from skidding off the limiting device of the inner cavity, the flap is fixedly installed the sealing for sealing water inlet Device, the valve shaft lower end are fixedly installed on the flap upper surface, and the valve shaft upper end is arranged in the valve seat, the valve Seat center offers the limit hole passed through for the valve shaft, and the valve seat is located at the limit hole side and offers water-flowing trough, institute State valve shaft, flap is overlapped with valve seat central axes, be provided with that contact at flap sealing described between the valve seat and flap The elasticity reset device of water inlet, it is characterised in that: the valve seat periphery is provided with the first screw thread, and the valve interior wall is provided with The second screw thread being threadedly engaged with described first, the valve seat are threadedly engaged rotatable setting by first screw thread and second In in the valve body.

2. damping check valve according to claim 1, it is characterised in that: the limiting device is retention bead, the limit Position protrusion is fixedly installed on the valve interior wall.

3. damping check valve according to claim 1, it is characterised in that: the sealing device is sealing ring, the sealing Ring is around being set to the flap lower end surface.

4. damping check valve according to claim 1, it is characterised in that: the elasticity reset device is spring, the bullet Spring is sheathed on the valve shaft, and the spring upper end and valve seat are inconsistent, and the lower spring end and the flap are inconsistent.