CN215720980U

CN215720980U - Negative pressure interface valve applied to negative pressure drainage system

Info

Publication number: CN215720980U
Application number: CN202122006576.7U
Authority: CN
Inventors: 许庆成; 赵阿强; 任志强
Original assignee: Jiangsu Qingchuan Tongchuang Technology Co ltd
Current assignee: Jiangsu Qingchuan Tongchuang Technology Co ltd
Priority date: 2021-08-24
Filing date: 2021-08-24
Publication date: 2022-02-01
Anticipated expiration: 2031-08-24

Abstract

The utility model discloses a negative pressure interface valve applied to a negative pressure drainage system, which comprises a valve seat, wherein a sewage inlet pipe and a sewage outlet pipe which are communicated with each other are respectively arranged at two sides of the valve seat, an elastic diaphragm is also arranged on the valve seat through a pressing assembly, the elastic diaphragm comprises a large spherical surface and a small spherical surface, the small spherical surface is arranged on the large spherical surface, the small spherical surface protrudes out of the large spherical surface, the small spherical surface can seal the sewage outlet pipe under a natural state to separate the sewage inlet pipe from the sewage outlet pipe, an upper cavity is formed between the elastic diaphragm and the pressing assembly, when the atmospheric pressure in the upper cavity is reduced, the elastic diaphragm can be driven to contract, and when the atmospheric pressure in the upper cavity is reduced, the small spherical surface enables the sewage inlet pipe to be communicated with the sewage outlet pipe. Through setting up elastic diaphragm into two spheres, the protrusion sets up little sphere on big sphere promptly, utilizes the little sphere to realize the sealed of blow off pipe, and the surface area of elastic diaphragm has been increased in the setting of this kind of two spheres, but is unchangeable to the seal area of blow off pipe, so increased the pressurized area of diaphragm to negative pressure interface valve's opening pressure differential has been reduced.

Description

Negative pressure interface valve applied to negative pressure drainage system

Technical Field

The utility model relates to the field of negative pressure drainage, in particular to a negative pressure interface valve applied to a negative pressure drainage system.

Background

The negative pressure drainage system is used for uniformly collecting sewage distributed in a negative pressure intelligent collector at the tail end of the tree-shaped negative pressure collecting pipe network into a negative pressure power center at the tail end of the system through negative pressure. The existing negative pressure intelligent collector comprises a water collecting terminal, a sewage suction pipe, a negative pressure interface valve, a pilot valve (an electromagnetic valve and a mechanical valve) and a liquid level switch. Wherein the performance of the negative pressure interface valve determines the water absorbing capacity of the water collecting terminal.

However, in the existing negative pressure interface valve, the sealing position between the valve body and the diaphragm contains an obvious extending bulge, sewage needs to cross the bulge, so that a 90-degree included angle exists in a sewage channel, foreign matter is easy to block the valve in the operation process, and the deformation position of the diaphragm is less, so that the opening pressure difference is large, and the valve passage is small.

The present inventors have therefore devised a negative pressure interface valve applied to a negative pressure drainage system in order to solve the above-described problems.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above disadvantages, the present invention provides a negative pressure interface valve applied to a negative pressure drainage system.

In order to achieve the above purposes, the utility model adopts the technical scheme that: the utility model provides a be applied to negative pressure interface valve of negative pressure drainage system, includes the disk seat, the both sides of disk seat set up the dirty pipe and the blow off pipe of advancing of intercommunication each other respectively, just still set up elastic diaphragm through compressing tightly the subassembly on the disk seat, just elastic diaphragm includes big sphere and little sphere, little sphere sets up on big sphere, just little sphere protrusion in big sphere, under natural state, the blow off pipe can be sealed to little sphere, makes it cuts off to advance dirty pipe and blow off pipe, simultaneously elastic diaphragm and compress tightly and constitute the upper plenum chamber between the subassembly, just when the indoor atmospheric pressure of epicoele reduces, can drive elastic diaphragm shrink, and during the shrink, little sphere makes dirty pipe and blow off pipe intercommunication.

Preferably, the sewage inlet pipe and the sewage discharge pipe are arranged at an angle of 135 degrees. Compare in and directly be sharp setting with sewage pipe and blow off pipe, the setting of this kind of slope makes the blow off pipe more easily sealed, improves sealing performance.

Preferably, a sealing boss is arranged in the valve seat, and the sealing boss is arranged along the pipe orifice of the sewage discharge pipe. And the height of the sealing boss slightly exceeds the inner surface of the valve seat, so that the sealing boss can be ensured to be fully contacted with the small spherical surface, and the sealing effect is ensured. And the size of the small spherical surface is slightly larger than the pipe orifice of the sewage draining pipe, so that the sealing of the sewage draining pipe can be realized.

Preferably, the compressing assembly comprises a valve cover, the elastic membrane is compressed and arranged in the valve seat by the valve cover, an air vent is arranged on the valve cover, and the air vent can change the atmospheric pressure of an upper chamber formed by the elastic membrane and the valve cover. Change grow atmospheric pressure through the air vent promptly, realize guaranteeing under natural state to the control of elastic diaphragm, to the sealed of blow off pipe, when needs are opened, reduce atmospheric pressure, make the elastic diaphragm shrink, elastic diaphragm takes place deformation promptly for advance dirty pipe and blow off pipe intercommunication.

Preferably, the elastic membrane is made of rubber.

Preferably, the edge of the elastic diaphragm is provided with a connecting boss, the connecting boss is arranged between the valve cover and the valve seat, and the valve cover can fixedly arrange the elastic diaphragm in the valve seat through the connecting boss. The stable existence of elastic diaphragm has been guaranteed promptly, improves sealing performance, and convenient follow-up change through the atmospheric pressure controls the break-make of elastic diaphragm to dirty tub of advancing and blow off pipe.

The negative pressure interface valve applied to the negative pressure drainage system has the advantages that the elastic diaphragm is arranged into the double spherical surfaces, namely the small spherical surface is convexly arranged on the large spherical surface, and the sewage discharge pipe is sealed by utilizing the small spherical surface; meanwhile, when the valve is opened, the large spherical surface deforms upwards, and the small spherical surface also deforms upwards, so that a larger valve drift diameter is obtained.

Drawings

Fig. 1 is a schematic structural diagram of a negative pressure interface valve applied to a negative pressure drainage system in a natural state.

Fig. 2 is a schematic structural diagram of a negative pressure interface valve applied to a negative pressure drainage system in an open state.

In the figure:

1. a valve seat, 2, a sewage inlet pipe, 3, a sewage discharge pipe, 4, a pressing component, 5 and an elastic diaphragm,

11. the sealing convex plate is arranged on the upper surface of the shell,

41. the valve cover 42, the vent hole,

51. big sphere, 52, little sphere, 53, connection boss.

Detailed Description

The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the utility model easier to understand by those skilled in the art, and thus will clearly and clearly define the scope of the utility model.

Referring to fig. 1-2, in the present embodiment, the negative pressure interface valve applied to a negative pressure drainage system includes a valve seat 1, a sewage inlet pipe 2 and a sewage outlet pipe 3 which are communicated with each other are respectively disposed on two sides of the valve seat 1, an elastic diaphragm 5 is further disposed on the valve seat 1 through a pressing assembly 4, the elastic diaphragm 5 includes a large spherical surface 51 and a small spherical surface 52, the small spherical surface 52 is disposed on the large spherical surface 51, and the small spherical surface 52 protrudes from the large spherical surface 51, in a natural state, the small spherical surface 52 can seal the sewage outlet pipe 3, so that the sewage inlet pipe 2 and the sewage outlet pipe 3 are separated, an upper chamber is formed between the elastic diaphragm 5 and the pressing assembly 4, and when the atmospheric pressure in the upper chamber is reduced, the elastic diaphragm 5 can be driven to contract, and when the elastic diaphragm contracts, the small spherical surface 52 enables the sewage inlet pipe 2 and the sewage outlet pipe 3 to be communicated.

The sewage inlet pipe 2 and the sewage discharge pipe 3 are arranged at an angle of 135 degrees. Compare in the setting that directly will advance dirty pipe 2 and blow off pipe 3 and be the straight line, the setting of this kind of slope makes blow off pipe 3 change by sealed, improves sealing performance.

A sealing boss 11 is arranged in the valve seat 1, and the sealing boss 11 is arranged along the pipe orifice of the sewage discharge pipe 3. The height of the sealing boss 11 slightly exceeds the inner surface of the valve seat 1, so that the sealing boss 11 can be ensured to be fully contacted with the small spherical surface 52, the sealing effect is ensured, and the sewage can not be blocked from flowing from the sewage inlet pipe 2 to the sewage discharge pipe 3; moreover, the size of the small spherical surface 52 is slightly larger than the pipe orifice of the sewage draining pipe 3, so that the sealing of the sewage draining pipe 3 can be realized.

The compressing assembly 4 comprises a valve cover 41, the elastic diaphragm 5 is compressed and arranged in the valve seat 1 by the valve cover 41, a vent hole 42 is arranged on the valve cover 41, and the vent hole 42 can change the atmospheric pressure of an upper chamber formed by the elastic diaphragm 5 and the valve cover 41. Change big atmospheric pressure through air vent 42 promptly, realize the control to elastic diaphragm 5, guarantee under natural state, to blow off pipe 3's sealed, when needs are opened, reduce atmospheric pressure, make elastic diaphragm 5 shrink, elastic diaphragm 5 takes place deformation promptly for advance dirty pipe 2 and blow off pipe 3 intercommunication.

The elastic membrane 5 is made of rubber.

The edge of the elastic diaphragm 5 is provided with a connecting boss 53, the connecting boss 53 is arranged between the valve cover 41 and the valve seat 1, and the valve cover 41 can fix the elastic diaphragm 5 in the valve seat 1 through the connecting boss 53. The stable existence of elastic diaphragm 5 has been guaranteed promptly, improves sealing performance, and convenient follow-up change through the atmospheric pressure controls the break-make of elastic diaphragm 5 to advancing dirty pipe 2 and blow off pipe 3.

The negative pressure interface valve applied to the negative pressure drainage system has the advantages that the elastic diaphragm 5 is arranged into a double-spherical surface, namely the small spherical surface 52 is convexly arranged on the large spherical surface 51, the sewage discharge pipe 3 is sealed by utilizing the small spherical surface 52, and compared with single spherical surface sealing, the double-spherical surface arrangement increases the surface area of the elastic diaphragm 5, but the sealing area of the sewage discharge pipe 3 is unchanged, so that the pressure bearing area of the diaphragm is increased, and the opening pressure difference of the negative pressure interface valve is reduced; meanwhile, when the valve is opened, the large spherical surface 51 deforms upwards, and the small spherical surface 52 also deforms upwards, so that a larger valve drift diameter is obtained.

The cavity between the elastic diaphragm 5 and the valve cover 41 is an upper cavity, the cavity between the sewage inlet pipe 2 and the elastic diaphragm 5 is a lower cavity, the cavity between the elastic diaphragm 5 and the sewage discharge pipe 3 is a sealing cavity, and the small spherical surface 52 is slightly larger than the pipe orifice of the sewage discharge pipe 3, so that the sewage discharge pipe 3 is sealed; when the atmospheric pressure of the upper chamber is greater than or equal to that of the lower chamber, the elastic diaphragm 5 is pressed or naturally rebounded, so that the elastic diaphragm 5 seals the sewage discharge pipe 3, and the disconnection of the negative pressure interface valve is realized; when the negative pressure interface valve needs to be opened, the atmospheric pressure of the upper cavity is changed by utilizing the vent hole 42, so that the atmospheric pressure of the upper cavity is smaller than that of the lower cavity, at the moment, the elastic diaphragm 5 can be subjected to the upward opening atmospheric pressure, and the large spherical surface 51 and the small spherical surface 52 are deformed, so that the sewage inlet pipe 2 is communicated with the sewage discharge pipe 3, and the opening of the negative pressure interface valve is realized. Through the arrangement of the two spherical surfaces, the ratio of the lower chamber to the sealing ring is increased, and when the atmospheric pressure of the upper chamber is reduced, larger upward atmospheric pressure can be obtained, so that the opening pressure difference of the negative pressure interface valve is smaller.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides a be applied to negative pressure interface valve of negative pressure drainage system which characterized in that: including the disk seat, the both sides of disk seat set up the dirty pipe and the blow off pipe of advancing of intercommunication respectively, just still set up elastic diaphragm through compressing tightly the subassembly on the disk seat, just elastic diaphragm includes big sphere and little sphere, little sphere sets up on big sphere, just little sphere protrusion in big sphere, under natural state, the blow off pipe can be sealed to little sphere, makes advance dirty pipe and blow off pipe wall, simultaneously elastic diaphragm and compress tightly and constitute the upper chamber between the subassembly, just when the atmospheric pressure in the upper chamber reduces, can drive the elastic diaphragm shrink, and when contracting, little sphere makes dirty pipe and blow off pipe intercommunication.

2. The negative pressure interface valve of claim 1, wherein the negative pressure interface valve is adapted to be used in a negative pressure drainage system, and further comprises: the sewage inlet pipe and the sewage discharge pipe are arranged at an angle of 135 degrees.

3. The negative pressure interface valve of claim 1, wherein the negative pressure interface valve is adapted to be used in a negative pressure drainage system, and further comprises: a sealing boss is arranged in the valve seat and arranged along the pipe orifice of the sewage draining pipe.

4. The negative pressure interface valve of claim 1, wherein the negative pressure interface valve is adapted to be used in a negative pressure drainage system, and further comprises: the compressing assembly comprises a valve cover, the elastic membrane is compressed and arranged in the valve seat by the valve cover, an air vent is arranged on the valve cover, and the air vent can change the atmospheric pressure of an upper chamber formed by the elastic membrane and the valve cover.

5. The negative pressure interface valve of claim 1, wherein the negative pressure interface valve is adapted to be used in a negative pressure drainage system, and further comprises: the elastic diaphragm is made of rubber.

6. The negative pressure interface valve of claim 1, wherein the negative pressure interface valve is adapted to be used in a negative pressure drainage system, and further comprises: the edge of elastic diaphragm sets up the connection boss, just connect the boss setting between valve gap and disk seat, just the valve gap can be through connecting the boss with the fixed setting of elastic diaphragm in the disk seat.