CN209762368U

CN209762368U - Full-automatic self-cleaning intake and exhaust valve

Info

Publication number: CN209762368U
Application number: CN201920453599.2U
Authority: CN
Inventors: 付永刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-04-04
Filing date: 2019-04-04
Publication date: 2019-12-10
Anticipated expiration: 2029-04-04

Abstract

The utility model relates to a full-automatic self-cleaning formula air inlet and outlet valve. The air inlet and outlet valve comprises a valve body, wherein a guide pipe is arranged at the upper end of the valve body, the top end of the guide pipe is provided with an air inlet and outlet, a connecting base is arranged at the lower end of the valve body, a floating ball is arranged inside the valve body, a longitudinal sealing needle is fixedly connected to the center of the floating ball, the lower end of the sealing needle is connected with a propeller, and the propeller is located in the base. This application air inlet and outlet valve is equipped with small-size screw in the base, with the reciprocating single motion about the floater, changes into reciprocating and rotatory work form from top to bottom, plays self-cleaning effect, can clear up the impurity of air inlet and outlet department like this, solves because of impurity is sealed tight not, and then leads to the problem of running water.

Description

Full-automatic self-cleaning intake and exhaust valve

Technical Field

The utility model relates to an exhaust valve, specifically speaking are full-automatic self-cleaning formula air inlet and exhaust valve.

Background

The operation medium in the pipeline of the central heating and water supply system of urban residents is mainly water. Under the action of pressure, temperature and rotation of a water pump impeller, air can be separated out from water, the collected air can increase the operation energy consumption of the system, meanwhile, the safety of the system operation is damaged, the accuracy of system instruments is influenced, the corrosion of pipelines is accelerated, and the service life is reduced. The air in the pipeline system is effectively discharged in time, the energy consumption of the system operation can be reduced, the safety factor is improved, the operation of the instrument accurate control system is utilized, and the service life of the pipeline system can be prolonged. The exhaust valve is an important device in a heating and water supply pipeline system and is usually arranged at the high position of the pipeline system. The function of the exhaust valve is as follows: when gas appears in the pipeline, the air in the pipeline can be discharged by the exhaust valve, so that the water delivery air resistance is reduced, and the water delivery stability and the pipeline safety are ensured. When negative pressure appears in the pipeline, the exhaust valve can suck gas quickly, so that the pipeline is prevented from being sucked and shrunken or the sealing is prevented from being damaged, and the like.

The structure of the existing exhaust valve is shown in figure 3.4 of the specification, and comprises a valve body, wherein the upper end of the valve body is connected with a guide pipe, the lower end of the valve body is connected with a base, a floating ball is arranged in the valve body, and a longitudinal sealing needle is arranged at the center of the floating ball. The floating ball and the sealing needle move up and down by using the pressure difference, and the air inlet and the air outlet are further closed and opened. The floating ball and the sealing needle assembly of the existing exhaust valve are heavy at the top and light at the bottom, so that the floating ball and the sealing needle assembly are inclined, frictional resistance can be generated during guiding work, and sealing failure can be caused when the resistance is overlarge. And the total weight of the floating ball is too light, so that the suction force of differential pressure on the floating ball sealing needle during the exhaust work can not be overcome when the pressure reaches a certain pressure. When the impurity card deposited in the guide pipe clamps the needle sealing floating ball, the self-falling of the floating ball needle cannot be realized due to the insufficient self-weight of the floating ball needle, so that the exhaust work cannot be finished, and the failure rate of the air inlet and exhaust valve is frequent.

Disclosure of Invention

The utility model aims at providing a full-automatic self-cleaning formula air inlet and outlet valve, this discharge valve have self-cleaning function, prevent that impurity from blockking up the air inlet and outlet, solve among the prior art floater and seal the needle assembly slope, produce the frictional resistance problem.

The technical scheme of the utility model is that:

The utility model provides a full-automatic self-cleaning formula air inlet and outlet valve, includes the valve body, is equipped with the stand pipe in the valve body upper end, and the stand pipe top is the air inlet and outlet, is equipped with the connection base at the valve body lower extreme, is equipped with the floater in the valve body is inside, at the fore-and-aft needle that seals of center department fixedly connected with of floater, it is connected with the screw to seal the needle lower extreme, the screw is in the base.

The utility model has the advantages that:

1. This application air inlet and outlet valve is equipped with small-size screw in the base, with the reciprocating single motion about the floater, changes into reciprocating and rotatory work form from top to bottom, plays self-cleaning effect, can clear up the impurity of air inlet and outlet department like this, solves because of impurity is sealed tight not, and then leads to the problem of running water.

2. The weight can increase the dead weight of the floating ball, and the floating ball is prevented from being sucked and pulled by high-speed discharged gas to influence the work of the exhaust valve.

3. The counterweight can change the gravity center of the floating ball and move the gravity center to the bottom of the floating ball, so that the sealing needle is kept vertically upward under the action of buoyancy, and the frictional resistance between the sealing needle and the guide pipe is reduced.

4. The height of the valve body and the sealing needle is increased, the distance between the horizontal plane and the air inlet and outlet is increased, so that about 1/4 space in the valve body is air, the purpose is to solve the problem that when the air of the exhaust valve is exhausted during working, the sealing needle does not bring out water when the air inlet and outlet is sealed, and impurities and rust in water are prevented from being brought out.

drawings

Fig. 1 is a schematic partial sectional structure of an exhaust valve of the present application.

Fig. 2 is a bottom view of fig. 1.

Fig. 3 is a view illustrating a structure of an exhaust valve according to the related art.

Fig. 4 is a bottom view of fig. 3.

Detailed Description

In order to solve the problems listed in the background technology, the inventor of the application creates a full-automatic self-cleaning air inlet and outlet valve.

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

As shown in figure 1, the full-automatic self-cleaning type air inlet and outlet valve comprises a valve body 1, wherein a guide pipe 2 is arranged at the upper end of the valve body 1, an air inlet and outlet port 3 is formed in the top end of the guide pipe 2, the sealing effect is achieved, a base 4 is connected to the lower end of the valve body 1, a floating ball 5 is arranged inside the valve body 1, a longitudinal sealing needle 6 is fixedly connected to the center of the floating ball 5, the valve body 1, the guide pipe 2 and the base 4 are connected through bolts, and the three parts can be designed into an integrated structure. The lower end of the seal needle is connected with a propeller 7, and the propeller 7 is positioned in the base 4.

The propeller comprises a middle propeller hub and blades which are arranged on the periphery and integrated with the propeller hub, an upper through hole and a lower through hole are arranged at the center of the propeller hub, the sealing needle penetrates through the through holes, and the sealing needle can be connected with the through holes in multiple modes. Such as a welded connection, a keyed connection, a bolted connection, etc.

The propeller that this application adopted is miniature propeller, and the diameter can be bought on the market within 20 mm.

A small propeller is additionally arranged at the inlet of the air inlet and outlet valve, so that the floating ball can do reciprocating movement up and down to change into a working mode of reciprocating rotation up and down. In order to solve the problem that water leakage is caused by impurities between the sealing needle and the air inlet and outlet port when the air inlet and outlet valve works in the air exhaust process. Have a self-cleaning function after installing small-size screw device additional, in the work process of exhausting, supply air or water in the valve body, promote little screw rotation, thereby drive the floater, seal the needle rotation, the rotation of sealing the needle can clear away the card automatically this moment, press from both sides the impurity in inlet and outlet department, take out the valve body under the pressure differential effect, reduce the probability of running water, and exhaust during operation at every turn can all carry out self-cleaning, give simultaneously that intake and exhaust valve creates a good operating condition.

The part of the sealing needle in the floating ball is provided with a counterweight 8 which can select a counterweight ball. The longitudinal center lines of the counterweight and the floating ball are overlapped. The counterweight and the sealing needle are of an integral structure or are connected through threads.

The whole height of the air inlet and outlet valve is 150-160mm, the length of the sealing needle is 145-155mm, and the volume of the floating ball accounts for three fifths to three quarters of the volume of the valve body.

The purpose of adding the counter weight is in order to guarantee the increase of the dead weight of the floating ball, the increase of the dead weight of the floating ball solves the problem that the floating ball cannot be sucked and pulled up by high-speed discharged gas in a designed pressure working range under the action of pressure difference during working (the existing floating ball is made of plastics or foam materials or is a metal shell), the phenomenon that the flow rate is faster when the pressure is higher is overcome, the suction and pulling force influences the work of the air intake and exhaust valve, and the pressure application range of the air intake and exhaust valve is enlarged. The gravity center of the floating ball can be changed by the counterweight, and the gravity center of the floating ball moves to the bottom of the floating ball, so that the friction resistance between the guide pipe and the sealing needle is reduced under the buoyancy of the working condition, the sealing needle of the floating ball is always vertically upward due to the buoyancy, and the sealing needle of the floating ball freely moves up and down in the valve body and the guide pipe, thereby reducing the friction resistance and reducing the failure rate. On the basis of adding the counterweight, the volume of the floating ball is increased, so that the buoyancy is increased, and the sealing is good.

The length of the valve body and the sealing needle is increased, and the distance between the horizontal plane and the air inlet and outlet is increased, so that about 1/4 space in the valve body is air, and the purpose is to solve the problem that when the air of the exhaust valve is exhausted during working, the sealing needle does not take out water as much as possible when the air inlet and outlet is sealed, and impurities and iron rust in water are prevented from being brought out. Impurity, rust block in the sealed instant of needle sealing, press from both sides in sealed department, lead to sealed inefficacy, prevent that iron rust, impurity in aquatic from attaching to at the stand pipe needle sealing top, guarantee the cleanness at stand pipe and needle sealing top as far as.

The working principle is as follows:

When water does not reach the height of the floating ball of the exhaust valve, the exhaust valve is naturally opened, and the floating ball seals the needle and cannot seal the air inlet and outlet. Water enters the valve body from the lower part of the air inlet and outlet valve base through a propeller arranged in the base, and under the action of buoyancy pressure difference, the floating ball sealing needle floats upwards to finish the work of sealing the air inlet and outlet, so that the water cannot overflow from the valve body. The increased valve body sealing needle can keep a certain distance between the water in the valve body and the air inlet and outlet. The weighted floating ball is enlarged, the floating ball after the counterweight is provided with enough buoyancy, and meanwhile, the floating ball in water is kept to vertically upwards seal the needle, so that the needle is guaranteed not to be influenced by frictional resistance, and the exhaust and sealing work is efficiently finished. When the air and water are supplemented into the valve body under the action of pressure difference during the air exhaust operation, the propeller at the inlet is pushed to rotate to drive the floating ball sealing needle to rotate, and the sealing position at the top of the sealing needle is self-cleaned and is cleaned from impurities. When the system generates negative pressure, the water level drops, the floating ball sealing needle falls under the action of gravity, the air inlet and outlet are opened, air enters the system, the system is guaranteed not to be damaged by the negative pressure, and when the system works next time, the floating ball floats to seal the air inlet and outlet.

Claims

1. The utility model provides a full-automatic self-cleaning formula air inlet and outlet valve, includes the valve body, is equipped with the stand pipe in the valve body upper end, and the stand pipe top is the inlet and outlet port, is equipped with at the valve body lower extreme and connects the base, is equipped with the floater inside the valve body, locates the fore-and-aft needle that seals of fixedly connected with, its characterized in that at the center of floater: the lower end of the seal needle is connected with a propeller, and the propeller is located in the base.

2. The fully automatic self-cleaning air intake and exhaust valve according to claim 1, characterized in that: the part of the sealing needle in the floating ball is provided with a counterweight, and the counterweight is superposed with the longitudinal central line of the floating ball.

3. The fully automatic self-cleaning air intake and exhaust valve according to claim 2, wherein: the counterweight and the sealing needle are of an integral structure or are connected through threads.

4. The fully automatic self-cleaning intake and exhaust valve according to claim 1 or 2, wherein: the whole height of the air inlet and outlet valve is 150-160mm, the length of the sealing needle is 145-155mm, and the volume of the floating ball accounts for three fifths to three quarters of the volume of the valve body.