CN215215019U

CN215215019U - Novel combined type high-speed air inlet and outlet valve damping structure

Info

Publication number: CN215215019U
Application number: CN202121093040.7U
Authority: CN
Inventors: 曹二帅; 孙占江; 蔡飞; 董飞
Original assignee: Beijing Valve General Factory Co ltd
Current assignee: Beijing Valve General Factory Co ltd
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2021-12-17
Anticipated expiration: 2031-05-21

Abstract

The utility model provides a novel combined type advances discharge valve damping structure at a high speed, which comprises a valve body, the valve gap, the valve body upside is equipped with the valve gap, the disk seat is installed with the inside terminal surface position that contacts of valve gap and valve body, be equipped with the disk seat circle between disk seat and the valve gap, the valve gap bottom is equipped with spacing arch with disk seat complex position, the valve gap top is equipped with the protection casing, install the filter screen in the protection casing, be equipped with the buffer board between filter screen and the disk seat, the position that is located the buffer board downside in the valve gap is equipped with the support, the inside floater that is equipped with of valve body, the top of floater is equipped with the spring holder, install the guide arm on the spring holder, it is equipped with the spring to go up guide arm outside cover. The utility model discloses reduced the impact force of floater to the disk seat, and then reduced the change frequency of disk seat and floater, increased the life of valve, reduced the cost of production operation and maintenance, reduced the disk seat simultaneously through the design of disk seat calendering structure greatly and lost elasticity because of frequent striking and ageing of floater, caused the condition that drops, and then reduced the probability that the valve seal became invalid.

Description

Novel combined type high-speed air inlet and outlet valve damping structure

Technical Field

The utility model relates to a water supply piping technical field especially relates to a novel high-speed inlet and outlet valve damping structure of combined type.

Background

The working principle of the current composite high-speed air inlet and outlet valve is as follows: when the pipeline fills water, gas in the pipeline needs to be discharged, and the floating ball cannot be blown by the gas to be contacted with the valve seat under the condition that the valve is not filled with water, so that the exhaust process is realized. When the valve is filled with water, the floating ball can float and contact with the valve seat, and the sealing function is achieved. When the pipeline is in a negative pressure state, the valve can intake air again, and the air intake process is realized. The valve seat is made of rubber, and the ball body is made of stainless steel.

The disadvantages of current such structures: when the pipeline is in a water filling state, the flow velocity of water in the pipeline is very high, the valve is filled with water instantly, the floating ball impacts the valve seat at high speed under the action of buoyancy, and according to the momentum theorem: f x delta t ═ mv-mv₀The ball body of the floating ball is deformed due to the fact that the impact force is very large at the moment, and the floating ball is easily damaged by long-term frequent impact of the valve seat and the floating ball, so that the service life of the valve is greatly shortened, the frequency of replacing the valve of a pipeline system is increased, hidden dangers are brought to long-term stable operation of the pipeline, and the production operation and maintenance cost is increased. Secondly, the valve seat is fixed on the valve cover by extruding the rubber valve seat, the valve cover and the valve seat ring between the valve seat ring and the valve cover in an interference fit manner. The structure causes the valve seat to fall off and the valve seal to lose effectiveness due to frequent impact of the floating ball on the valve seat and aging loss of elasticity of the valve seat in the long-term operation process of the valve.

Disclosure of Invention

According to the technical problems, the utility model provides a novel combined type high-speed air inlet and outlet valve damping structure, which comprises a valve body and a valve cover, wherein the valve cover is arranged on the upper side of the valve body, the valve cover is fixedly connected with the valve body through bolts, a valve seat is arranged at the end face position of the valve cover contacted with the interior of the valve body, a valve seat ring is arranged between the valve seat and the valve cover, a position at the bottom of the valve cover matched with the valve seat is provided with a limiting bulge, the top of the valve cover is provided with a protective cover, a filter screen is arranged in the protective cover, a buffer plate is arranged between the filter screen and the valve seat, the central position of the buffer plate is provided with a central hole, a bracket is arranged at the lower side of the buffer plate in the valve cover, a guide hole is arranged on the bracket, the guide hole and the central hole are concentrically arranged, a floating ball is arranged in the interior of the valve body, a spring seat is arranged at the top of the floating ball, and an upper guide rod is arranged on the spring seat, the outer side of the upper guide rod is sleeved with a spring, and two ends of the spring are respectively connected with the bottom of the support and the upper surface of the spring seat.

Furthermore, the support and the valve cover are of an integrated structure.

Furthermore, the support and the valve cover are integrally fixed in a welding or bolt connection mode.

Furthermore, the limiting bulge is obliquely arranged towards the center of the valve cover.

Furthermore, the spring seat is fixedly connected with the floating ball and the upper guide rod in a welding or bolt connection mode.

Further, the spring is a cylindrical spiral spring or a disc spring.

Furthermore, the diameter of the upper guide rod is smaller than that of the central hole and the guide hole, and the length of the upper guide rod is larger than the distance between the upper surface of the floating ball and the upper surface of the bracket.

The utility model has the advantages that:

(1) the spring seat and the upper guide rod are arranged on the upper surface of the floating ball, the support is correspondingly arranged on the valve cover, the spring is installed between the support and the floating ball, and therefore the damping mechanism is formed.

(2) The valve seat calendering structure is formed by inclining the limiting bulge to the center of the valve cover, the frequent impact and aging of the floating ball on the valve cover are greatly reduced, the falling condition is caused, and the probability of failure of the valve seal is reduced.

Drawings

FIG. 1 is a schematic view of the main structure of the utility model in the exhaust state;

FIG. 2 is a schematic view of the main structure of the present invention in a sealed state;

FIG. 3 is a partially enlarged view of the floating ball contacting the valve seat according to the present invention;

FIG. 4 is a schematic view showing a partially enlarged installation position of the upper guide rod and the floating ball of the present invention;

FIG. 5 is a schematic view of a conventional intake/exhaust valve in a venting state;

FIG. 6 is a schematic view of a sealing state of a conventional intake/exhaust valve;

fig. 7 is a partially enlarged schematic view of a conventional intake/exhaust valve in which a float ball contacts a valve seat.

As shown in the figure: the valve comprises a valve body-1, a floating ball-2, a spring-3, a valve seat-4, a valve cover-5, a bracket-6, a buffer plate-7, a filter screen-8, a protective cover-9, a valve seat ring-10, a spring seat-11, an upper guide rod-12, a limiting bulge-13, a guide hole-14 and a central hole-15.

Detailed Description

Example 1:

according to the technical problems, the utility model provides a novel combined type high-speed air inlet and outlet valve damping structure, which comprises a valve body 1 and a valve cover 5, wherein the valve cover 5 is arranged on the upper side of the valve body 1, the valve cover 5 is fixedly connected with the valve body 1 through bolts, a valve seat 4 is arranged at the end face position of the valve cover 5 contacted with the inner part of the valve body 1, a valve seat ring 10 is arranged between the valve seat 4 and the valve cover 5, a position of the bottom of the valve cover 5 matched with the valve seat 4 is provided with a limit bulge 13, the top of the valve cover 5 is provided with a protective cover 9, a filter screen 8 is arranged in the protective cover 9, a buffer plate 7 is arranged between the filter screen 8 and the valve seat 4, the center position of the buffer plate 7 is provided with a center hole 15, a support 6 is arranged at the lower side of the buffer plate 7 in the valve cover 5, a guide hole 14 is arranged on the support 6 concentrically with the center hole 15, the floating ball 2 is arranged inside the valve body 1, a spring seat 11 is arranged at the top of the floating ball 2, an upper guide rod 12 is installed on the spring seat 11, a spring 3 is sleeved outside the upper guide rod 12, and two ends of the spring 3 are respectively connected with the bottom of the support 6 and the upper surface of the spring seat 11.

Further, the bracket 6 and the valve cover 5 are of an integrated structure.

Further, the bracket 6 and the valve cover 5 are fixed by welding or bolt connection.

Furthermore, the limiting bulge 13 is obliquely arranged towards the center of the valve cover 5.

Furthermore, the spring seat 11 is fixedly connected with the floating ball 2 and the upper guide rod 12 in a welding or bolt connection mode.

Further, the spring 3 is a cylindrical coil spring or a disc spring.

Further, the diameter of upper guide rod 12 is smaller than the diameter of central hole 15 and guide hole 14, and the length of upper guide rod is greater than the distance between the upper surface of floating ball 2 and the upper surface of bracket 6.

Example 2:

the working principle is as follows: when the valve carries out carminative process, floater 2 is not blown, and spring 3 is in free state this moment, and when water in the pipeline got into the valve inner chamber at a high speed and made floater 2 float, spring 3 began to work and played the cushioning effect, prevented the high-speed striking disk seat of floater 2, according to the momentum theorem: f x delta t ═ mv-mv₀When the action time is prolonged, the action force is reduced, so that the impact force of the floating ball 2 on the valve seat 4 is greatly reduced;

the function of a limit bump 13 on the valve cover 5 is: after the valve seat 4 made of rubber is installed in the valve cover 5 and the valve seat ring 10 in a tight fit mode, the limiting bulge 13 presses the valve seat 4 through a rolling method, and the valve seat 4 is prevented from falling off due to the fact that the floating ball 2 frequently collides, ages and loses elasticity.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. The utility model discloses each part that mentions is the common technique in prior art, and the technical personnel of this trade should understand, the utility model discloses do not receive the restriction of above-mentioned embodiment, the description only is the explanation in above-mentioned embodiment and the description the principle of the utility model, under the prerequisite that does not deviate from the spirit and the scope of the utility model, the utility model discloses still can have various changes and improvement, these changes and improvement all fall into the protection of claim the utility model is within the scope. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. A novel combined type high-speed air inlet and outlet valve damping structure comprises a valve body and a valve cover, and is characterized in that the valve cover is arranged on the upper side of the valve body, the valve cover is fixedly connected with the valve body through bolts, a valve seat is arranged at the end face position of the valve cover, which is contacted with the inside of the valve body, a valve seat ring is arranged between the valve seat and the valve cover, a limiting bulge is arranged at the position, matched with the valve seat, of the bottom of the valve cover, a protective cover is arranged at the top of the valve cover, a filter screen is arranged in the protective cover, a buffer plate is arranged between the filter screen and the valve seat, a central hole is arranged at the central position of the buffer plate, a support is arranged at the lower side of the buffer plate in the valve cover, a guide hole is arranged on the support, the guide hole and the central hole are concentrically arranged, a floating ball is arranged inside the valve body, a spring seat is arranged at the top of the floating ball, an upper guide rod is arranged on the spring seat, and a spring is sleeved outside the upper guide rod, and two ends of the spring are respectively connected with the bottom of the support and the upper surface of the spring seat.

2. The novel damping structure for a high-speed intake and exhaust valve as claimed in claim 1, wherein the bracket and the valve cover are of an integral structure.

3. The novel damping structure for the high-speed intake and exhaust valves of claim 2, wherein the bracket and the valve cover are integrally fixed by welding or bolting.

4. The novel damping structure for the high-speed intake and exhaust valves as claimed in claim 1, wherein the limiting protrusions are inclined toward the center of the valve cover.

5. The novel damping structure for the combined type high-speed air inlet and outlet valve as claimed in claim 1, wherein the spring seat is fixedly connected with the floating ball and the upper guide rod by welding or bolting.

6. The novel composite high-speed intake and exhaust valve damping structure as claimed in claim 1, wherein the spring is a cylindrical coil spring or a disc spring.

7. The novel damping structure for a high-speed intake and exhaust valve as claimed in claim 1, wherein the diameter of the upper guide rod is smaller than the diameter of the central hole and the guide hole, and the length of the upper guide rod is greater than the distance from the upper surface of the floating ball to the upper surface of the bracket.