CN210716254U - Silent check valve device with sewage discharge function - Google Patents

Abstract

The utility model discloses a silence check valve device with blowdown function relates to the valve field, mainly including setting up the silence check valve in the valve body and setting up the blowdown stop valve in the valve body bottom. The utility model adopts the horn-shaped flow guide body, has flow guide and flow distribution effects on the medium, prevents the medium from generating vortex inside the valve cavity, further reduces the head loss of the silent check valve, and achieves the effects of energy conservation and environmental protection; the sealing valve seat adopts the copper ring which is independently embedded on the valve body, the sealing performance is more reliable compared with the method of directly using the cross section of the valve body as a sealing surface, the problems of easy corrosion, plastic spraying epoxy resin shedding and the like do not exist, and the sealing valve seat is embedded in a dovetail groove on the valve body through high-pressure equipment, so the bonding strength is high, and the service life is long; add the blowdown stop valve in silence check valve body bottom, pull down the stop valve and can drain the inside ponding of valve pocket and impurity, avoid the secondary pollution of ponding, the maintenance and the pressure release of the silence check valve of being convenient for simultaneously.

Description

Silent check valve device with sewage discharge function

Technical Field

The utility model relates to a field of valve, concretely relates to silence check valve device with blowdown function.

Background

The silent check valve is a valve which relies on the medium flowing to automatically open and close the valve clack to prevent the medium from flowing backwards, and belongs to an automatic valve which mainly has the main functions of preventing the medium from flowing backwards, preventing the pump and the driving motor from reversing and preventing the medium in a container from leaking. The traditional silent check valve directly uses the cross section of the valve body as a sealing surface, and generally has the problems of easy corrosion, easy falling of plastic-sprayed epoxy resin and the like, so that the valve body has low bonding strength and short service life; in addition, when the mute check valve is in an inoperative state, accumulated water and impurities in the valve cavity are difficult to directly discharge, and secondary pollution is caused to the next work. Therefore, a mute check valve with a novel sealing structure and a sewage draining function is needed at present.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the not enough of prior art existence, and provide a have blowdown function silence check valve device, effectively prevent the refluence, seal structure is reliable to have the blowdown function.

The purpose of the utility model is accomplished through following technical scheme: the mute check valve device with the blowdown function mainly comprises a mute check valve arranged in a valve body and a blowdown stop valve arranged at the bottom of the valve body; the silent check valve mainly comprises a valve body and a silent check valve rod, wherein a sealing valve seat is embedded and installed in a dovetail groove on the valve body, a valve clack is installed in the sealing valve seat, the silent check valve rod is embedded and installed in the valve clack and sealed through a sealing gasket, a pressing plate is sleeved outside one end of the silent check valve rod, a flow guide body is sleeved outside the other end of the silent check valve rod, a spring is installed in the silent check valve rod, a support is installed on the right side of the valve body, and the valve clack partitions the silent check; the bottom of the valve body is provided with a sewage stop valve consisting of a sealing ring, a hand wheel, a sewage stop valve rod, a valve cover and a bypass valve seat, the sewage stop valve rod is fixedly connected with the bypass valve seat and sealed by the sealing ring, the sewage stop valve rod is sleeved with the valve cover, the hand wheel is arranged at the bottom of the sewage stop valve rod and used for controlling the opening and closing of the sewage stop valve, and a bypass hole is formed in the bottom of the valve body and used for communicating a water inlet cavity of the mute check valve with; when the mute check valve works normally, the blowdown stop valve is in a closed state, so that the bypass hole and the water outlet cavity of the mute check valve are separated by the blowdown stop valve, and the water inlet cavity and the water outlet cavity on the two sides of the valve clack are separated by the mute check valve, so that one-way circulation of media is ensured; after the stop valve is opened, the medium in the water outlet cavity is communicated with the water inlet cavity through the bypass hole, so that the pressure on two sides of the water inlet cavity and the water outlet cavity is equal; when the mute check valve is in an inoperative state, the blowdown stop valve is disassembled, and accumulated water and impurities in the valve cavity can be discharged.

Furthermore, the sealing valve seat is made of a copper ring, so that the safety and reliability of the sealing surface are guaranteed.

Furthermore, the flow guide body is in a horn shape and is used for guiding and dividing media in the valve.

The utility model has the advantages that: the horn-shaped flow guide body is adopted, so that the flow guide and flow distribution effects on the medium are achieved, the vortex of the medium in the valve cavity is prevented from being generated, the head loss of the mute check valve is further reduced, and the effects of energy conservation and environmental protection are achieved; the sealing valve seat is a copper ring which is independently embedded on the valve body, the sealing performance is more reliable compared with the method of directly using the cross section of the valve body as a sealing surface, the problems of easy corrosion, plastic spraying epoxy resin shedding and the like do not exist, and the sealing valve seat is embedded in a dovetail groove on the valve body through high-pressure equipment, so that the bonding strength is high, and the service life is long; the internal flow passage of the mute check valve and the opening stroke of the valve clack are all designed in a full flow mode, the fluid resistance of a medium is small, the head loss of the medium passing through the whole mute check valve is small, and the energy-saving effect is good; add the blowdown stop valve in silence check valve body bottom, pull down the stop valve and can drain the inside ponding of valve pocket and impurity, avoid the secondary pollution of ponding, the maintenance and the pressure release of the silence check valve of being convenient for simultaneously.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Description of reference numerals: the device comprises a mute check valve I, a sewage discharge stop valve II, a valve body 1, a sealing valve seat 2, a valve clack 3, a sealing gasket 4, a mute check valve rod 5, a pressing plate 6, a support 7, a flow guide body 8, a spring 9, a sealing ring 10, a hand wheel 11, a sewage discharge stop valve rod 12, a valve cover 13, a bypass valve seat 14 and a bypass hole 15.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

example (b): as shown in the attached drawings, the mute check valve device with the blowdown function mainly comprises a mute check valve I arranged in a valve body 1 and a blowdown stop valve II arranged at the bottom of the valve body 1; the mute check valve I mainly comprises a valve body 1 and a mute check valve rod 5, a sealing valve seat 2 is embedded and installed in a dovetail groove on the valve body 1, a valve clack 3 is installed in the sealing valve seat 2, the mute check valve rod 5 is embedded and installed in the valve clack 3 and sealed through a sealing gasket 4, a pressing plate 6 is sleeved outside one end of the mute check valve rod 5, a flow deflector 8 is sleeved outside the other end of the mute check valve rod 5, a spring 9 is installed in the mute check valve rod 5, a support 7 is installed on the right side of the valve body 1, and the mute check valve I is partitioned into a; the bottom of the valve body 1 is provided with a sewage discharge stop valve II consisting of a sealing ring 10, a hand wheel 11, a sewage discharge stop valve rod 12, a valve cover 13 and a bypass valve seat 14, the sewage discharge stop valve rod 12 and the bypass valve seat 14 are fixedly connected and sealed through the sealing ring 10, the valve cover 13 is sleeved outside the sewage discharge stop valve rod 12, the hand wheel 11 is installed at the bottom of the sewage discharge stop valve rod 12 and used for controlling the opening and closing of the sewage discharge stop valve II, and a bypass hole 15 is formed in the bottom of the valve body 1 and used for communicating a water inlet cavity of; when the mute check valve I works normally, the blowdown stop valve II is in a closed state, so that the bypass hole 15 and the water outlet cavity of the mute check valve I are separated by the blowdown stop valve II, and the water inlet cavity and the water outlet cavity on the two sides of the valve clack 3 are separated by the mute check valve I, and unidirectional medium circulation is ensured; after the stop valve is opened, the medium in the water outlet cavity is communicated with the water inlet cavity through the bypass hole 15, so that the pressure on two sides of the water inlet cavity and the water outlet cavity is equal; the sealing valve seat 2 is made of a copper ring, compared with the prior mute check valve which directly uses the valve body section as a sealing surface, the sealing valve seat is more reliable in sealing, the problems of easy corrosion, plastic spraying epoxy resin shedding and the like do not exist, and the sealing valve seat 2 is embedded in a dovetail groove on the valve body through high-pressure equipment, so that the bonding strength is high, and the service life is long; the flow guide body 8 is in a horn shape and is used for guiding the flow and guiding media in the flow divider valve, so that the generation of eddy of the media in the valve cavity is prevented, the head loss of the mute check valve is reduced, and the effects of energy conservation and environmental protection are achieved.

Preferably, the inner flow passage of the mute check valve I and the opening stroke of the valve clack 3 are designed by adopting full flow, so that the fluid resistance of the medium is reduced, the head loss of the medium passing through the whole mute check valve is small, and a good energy-saving effect is achieved.

The utility model discloses a working process: when the mute check valve works normally, the blowdown stop valve is in a closed state, so that the bypass hole and the water outlet cavity of the mute check valve are separated by the blowdown stop valve, and the water inlet cavity and the water outlet cavity on the two sides of the valve clack are separated by the mute check valve, so that the medium can only flow in one direction and cannot flow backwards; when the water inlet cavity of the mute check valve needs to be overhauled or a user requires the communication between the water inlet cavity and the water outlet cavity, the stop valve can be opened, and at the moment, the medium in the water outlet cavity is communicated with the water inlet cavity through the bypass hole, so that the pressures on the two sides of the water inlet cavity and the water outlet cavity are equal; when the silence check valve is in off-working condition, when needing the blowdown, can pull down the blowdown stop valve, drain the inside ponding of valve pocket and impurity for the silence check valve is during operation once more, can avoid the secondary pollution that ponding caused.

It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.

Claims (3)

1. The utility model provides a silence check valve device with blowdown function which characterized in that: mainly comprises a silent check valve (I) arranged in a valve body (1) and a blowdown stop valve (II) arranged at the bottom of the valve body (1); the mute check valve (I) mainly comprises a valve body (1) and a mute check valve rod (5), a sealing valve seat (2) is embedded and installed in a dovetail groove on the valve body (1), a valve clack (3) is installed in the sealing valve seat (2), the mute check valve rod (5) is embedded and installed in the valve clack (3) and sealed through a sealing gasket (4), a pressing plate (6) is sleeved outside one end of the mute check valve rod (5), a flow guide body (8) is sleeved outside the other end of the mute check valve rod (5), a spring (9) is installed in the mute check valve rod (5), a support (7) is installed on the right side of the valve body (1), and the valve clack (3) separates the mute check valve; the bottom of the valve body (1) is provided with a sewage discharge stop valve (II) consisting of a sealing ring (10), a hand wheel (11), a sewage discharge stop valve rod (12), a valve cover (13) and a bypass valve seat (14), the sewage discharge stop valve rod (12) is fixedly connected with the bypass valve seat (14) and sealed by the sealing ring (10), the valve cover (13) is sleeved outside the sewage discharge stop valve rod (12), the hand wheel (11) is installed at the bottom of the sewage discharge stop valve rod (12) and used for controlling the opening and closing of the sewage discharge stop valve (II), and a bypass hole (15) is formed in the bottom of the valve body (1) and used for communicating a water inlet cavity of the mute check valve (I; when the mute check valve (I) works normally, the blowdown stop valve (II) is in a closed state, so that the bypass hole (15) and the water outlet cavity of the mute check valve (I) are separated by the blowdown stop valve (II), and the water inlet cavity and the water outlet cavity on the two sides of the valve clack (3) are separated by the mute check valve (I), and the medium is ensured to flow in one direction; after the stop valve is opened, the medium in the water outlet cavity is communicated with the water inlet cavity through the bypass hole (15), so that the pressure on the two sides of the water inlet cavity and the water outlet cavity is equal; when the mute check valve (I) is in an inoperative state, the blowdown stop valve (II) is detached, and accumulated water and impurities in the valve cavity can be discharged.

2. The silence check valve device with a blowdown function of claim 1, wherein: the sealing valve seat (2) is made of a copper ring, so that the safety and reliability of a sealing surface are guaranteed.

3. The silence check valve device with a blowdown function of claim 1, wherein: the flow guide body (8) is in a horn shape and is used for guiding and dividing media in the valve.

Images