CN218935409U

CN218935409U - Automatic exhaust valve

Info

Publication number: CN218935409U
Application number: CN202223515538.5U
Authority: CN
Inventors: 王展波; 牛秋菊; 梁长海
Original assignee: Tianjin Tanggu Gas Special Valve Co ltd
Current assignee: Tianjin Tanggu Gas Special Valve Co ltd
Priority date: 2022-12-28
Filing date: 2022-12-28
Publication date: 2023-04-28
Anticipated expiration: 2032-12-28
Also published as: CN218935409U8

Abstract

The utility model provides an automatic exhaust valve, which relates to the technical field of valve bodies and comprises a valve body, wherein an exhaust channel is arranged in the valve body, a guide frame is arranged in the exhaust channel, one end of the guide frame is provided with a sealing plug which is in sliding connection with the guide frame, the other end of the guide frame is provided with a floating ball which is used for pushing the sealing plug to move, and the exhaust channel is provided with a sealing seat which is matched with the sealing plug for sealing.

Description

Automatic exhaust valve

Technical Field

The utility model relates to the technical field of valve bodies, in particular to an automatic exhaust valve.

Background

The integral air inlet and outlet valve is applied to a hydraulic pipeline, mainly performs air suction and air discharge of a pressure conveying pipeline, improves the efficiency of water conveying equipment, protects the pipeline from deformation and rupture, and is mainly applied to various water plants, water supply engineering and urban pipeline systems.

At present, in order to automatically discharge gas at a high speed when a water supply pipeline is flushed, gas precipitated in water flow can be timely discharged in a normal water supply process, so that water resistance is reduced, and the method aims at the following patent documents: "CN201510170577.1" states that the gas in the pipeline can not be discharged in time, so that the pressure of the water supply source is increased, and the water flow speed is slow; meanwhile, when the pipeline is under negative pressure, the valve body lacks negative pressure protection measures, a sealing part is easy to damage, an exhaust valve is damaged, and the pipeline cannot run.

Disclosure of Invention

The utility model aims to provide an automatic exhaust valve which can quickly exhaust when a pipeline is filled with water, can quickly intake air when negative pressure is generated in the pipeline, can exhaust a small amount of gas accumulated in the pipeline in a normal working state, and can automatically close the valve after the exhaust.

Embodiments of the present utility model are implemented as follows:

in a first aspect, an embodiment of the application provides an automatic exhaust valve, it includes the valve body, has the exhaust passage in the valve body, installs the leading truck in the exhaust passage, and the sealing plug with its sliding connection is installed to the one end of leading truck, and the floater that is used for promoting the sealing plug removal is installed to the other end of leading truck, installs the sealing seat that the cooperation sealing plug was sealed usefulness on the exhaust passage.

In some embodiments of the present utility model, a protection cover is installed on the top of the valve body, and a protection net is installed between the protection cover and the valve body.

In some embodiments of the present utility model, the guide frame has a through hole in the center, the sealing plug is in sliding fit with the through hole of the guide frame, the sealing plug includes a movable valve core, a guide rod in sliding fit with the movable valve core is sleeved in the movable valve core, and the other end of the guide rod is connected with the floating ball.

In some embodiments of the utility model, the movable valve core is provided with a cavity, a micro-row sealing seat capable of sliding vertically is arranged in the cavity, a vertical hole communicated with the cavity is formed at the top of the movable valve core, and a horizontal hole communicated with the cavity is formed at the side surface of the valve core.

In some embodiments of the present utility model, the inner wall of the cavity is provided with vertical grooves symmetrically arranged, the guide rod is provided with a pin shaft, and two ends of the pin shaft are inserted into the vertical grooves.

In some embodiments of the present utility model, a limiting guide rib for limiting the horizontal movement of the floating ball is installed on the inner wall of the valve body.

In some embodiments of the present utility model, four limit guide ribs are provided, and the four limit guide ribs are symmetrically distributed along a central axis of the valve body.

In some embodiments of the present utility model, a protection cover for protecting the floating ball is installed on the inner wall of the valve body.

Compared with the prior art, the embodiment of the utility model has at least the following advantages or beneficial effects:

in order to solve the problems that the pressure of a water supply source is increased to cause slow water flow rate and an exhaust valve is damaged due to the fact that a valve body lacks negative pressure protection measures when the pipeline is in negative pressure, the utility model designs an automatic opening and closing valve body structure which can discharge air in the pipeline when an empty pipeline is filled with water, can supplement water to a main pipeline when the pipeline is emptied or negative pressure occurs, and can open an exhaust channel to communicate with outside air and charge air into the pipeline to eliminate the negative pressure. The device is arranged at the high point or elbow of the water delivery pipeline, and the like, eliminates redundant gas in the pipeline, and performs air suction and air discharge of the pressure delivery pipeline on the hydraulic pipeline so as to improve the efficiency of the water delivery device and protect the pipeline from deformation or rupture caused by pressure difference.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

FIG. 2 is a schematic cross-sectional view of an embodiment of the present utility model;

FIG. 3 is an enlarged schematic view of a portion of an embodiment of the present utility model;

fig. 4 is a schematic cross-sectional view of fig. 2 in an embodiment of the utility model.

Icon: the valve comprises a valve body 1, an exhaust channel 101, a guide frame 2, a through hole 201, a 3-sealing plug, a 4-floating ball, a 5-sealing seat, a 6-protecting cover 7-protecting net 8-movable valve core 801-cavity 802-vertical hole 803-horizontal hole 804-vertical groove 9-guide rod 10-micro-row sealing seat 11-pin shaft 12-limit guide rib 13-protecting cover.

Detailed Description

Example 1

Referring to fig. 1-4, fig. 1 is a schematic diagram of an overall structure, fig. 2 is a schematic diagram of a structural formula of fig. 4 cut through a section A-A, the embodiment provides an automatic exhaust valve, which comprises a valve body 1, an exhaust channel 101 is arranged in the valve body 1, a guide frame 2 is arranged in the exhaust channel 101, one end of the guide frame 2 is provided with a sealing plug 3 in sliding connection with the guide frame, the other end of the guide frame 2 is provided with a floating ball 4 for pushing the sealing plug 3 to move, and a sealing seat 5 matched with the sealing plug 3 for sealing is arranged on the exhaust channel 101.

When the device is used, the valve body 1 is arranged on a main pipeline, the exhaust channel 101 of the valve body 1 is communicated with the main pipeline, when the main pipeline conveys water flow, air in the main pipeline is discharged from the exhaust port of the sealing seat 5 through the exhaust channel 101 of the valve body 1, when the water flow enters the exhaust channel 101 of the valve body 1, the water flow drives the floating ball 4 to vertically move upwards, at the moment, the floating ball 4 pushes the sealing plug 3 on the guide frame 2 to move towards the channel of the sealing seat 5, and finally, the end face of the sealing plug 3 is in seamless abutting connection with the end face of the sealing seat 5 by virtue of the buoyancy of the floating ball, so that the channel between the valve body 1 and the outside is closed; on the contrary, when negative pressure is produced by the water hammer in the pipeline, the water level in the main pipeline is reduced, the stored water in the exhaust channel 101 of the valve body 1 flows to the main pipeline to supplement water, meanwhile, the floating ball 4 moves downwards due to lack of buoyancy support, so that the sealing plug 3 is separated from contact with the sealing seat 5, the exhaust channel in the valve body 1 is finally opened, and at the moment, the outside air can provide air for the main pipeline in a negative pressure state, thereby realizing the depressurization of the main pipeline.

In order to make the whole better and further optimize, as shown in fig. 1 or fig. 2, a protective cover 6 is installed at the top of the valve body 1, a protective net 7 is installed between the protective cover 6 and the valve body 1, and the protective net 7 and the protective cover 6 have certain filtering effect to prevent articles from being wrongly entered into the valve body 1.

Example 2

In order to automatically discharge a small amount of air accumulated in the pipeline under a pressure state and timely perform exhausting and pressure reducing treatment, as shown in fig. 3, in order to enable the sealing plug 3 to slide up and down in the through hole 201 of the guide frame 2 better, the embodiment is developed based on the previous embodiment, and the sealing plug 3 is improved, wherein the sealing plug 3 comprises a movable valve core 8, a guide rod 9 in sliding fit with the movable valve core 8 is sleeved in the movable valve core 8, the other end of the guide rod 9 is connected with a floating ball 4, the movable valve core 8 is provided with a cavity 801, a micro-row sealing seat 105 capable of sliding vertically is arranged in the cavity 801, the top of the movable valve core 8 is provided with a vertical hole 802 communicated with the cavity 801, the side surface of the valve core is provided with a horizontal hole 803 communicated with the cavity 801, vertical grooves 804 are symmetrically arranged on the inner wall of the cavity 801, pin shafts 11 are arranged on the guide rod 9, and two ends of the pin shafts 11 are inserted into the vertical grooves 804; when bubbles in water flow in the valve body 1 continuously enter the exhaust channel 101, so that the air pressure in the exhaust channel 101 is increased, the air pressure in the exhaust channel 101 is pressed to slowly descend, then the position of the floating ball 4 which lacks buoyancy support descends, the pin shaft 11 on the guide rod 9 moves downwards in the vertical groove 804, the micro-discharge sealing seat 105 descends, then the vertical hole 802 is opened, high-pressure air in the valve body 1 is finally discharged from the exhaust channel of the sealing seat 5 through the horizontal hole 803, the cavity 801 and the vertical hole 802, high-pressure micro-exhaust is realized, after the air is discharged, the air pressure in the valve body descends, the water level in the valve body rises again, the floating ball 4 floats upwards again under the action of the buoyancy, the micro-discharge sealing seat 10 floats upwards along with the vertical hole 802, the sealing specific pressure is reestablished, the sealing of the whole valve body is ensured, the movable valve core 8 is always not contacted with water in a pipeline, the micro-discharge sealing seat 10 is not contacted with water in the exhaust channel 101 all the time, the fouling is prevented from being blocked, the sealing position is prevented from being blocked by the water or the working stability is improved.

In order to ensure that the floating ball can not deviate left and right in the process of moving up and down better, the inner wall of the valve body 1 is provided with four limit guide ribs 12 to limit the floating ball 4 to move left and right, the four limit guide ribs 12 are symmetrically distributed around the central axis of the valve body 1, finally, in order to reduce direct contact of main pipeline water flow to the floating ball 4 after entering the valve body 1, the inner wall of the valve body 1 is provided with a protection cover 13 for protecting the floating ball 4, the water flow is subsequently diffused from the semicircular protection floating ball 4 to the periphery thereof, the impacted water flow is relieved to be contacted with the floating ball 4, meanwhile, the protection cover 13 avoids the phenomenon of low pressure difference 'air closure', the valve body is started under pressure, and the phenomenon that high-speed air flow disturbs the floating ball to impact the valve body to cause deformation or rupture of the floating ball is effectively prevented.

In summary, three pressure relief modes are designed to meet the requirement of stabilizing the air pressure in the pipe under different conditions, the valve body is formed by combining a high-pressure micro automatic exhaust port and a low-pressure large-amount air inlet and exhaust port, and the valve body has the functions of exhaust and air inlet, and can automatically exhaust a small amount of air accumulated in the high-pressure micro automatic exhaust port under the state that the pipe is pressurized; the low-pressure air inlet and outlet can discharge air in the pipeline when the empty pipeline is filled with water, and can be automatically opened when the pipeline is emptied or negative pressure occurs, such as under the water column separation working condition, and air is introduced into the pipeline to eliminate the negative pressure. The device is arranged at the high point or the elbow of the water conveying pipeline, etc. to remove the redundant gas in the pipeline.

The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides an automatic discharge valve, its characterized in that, includes valve body (1), have exhaust passage (101) in valve body (1), internally mounted of exhaust passage (101) has leading truck (2), the one end sliding connection of leading truck (2) has sealing plug (3), floating ball (4) that are used for promoting sealing plug (3) removal are installed to the other end of leading truck (2), install sealing seat (5) that cooperation sealing plug (3) were sealed.

2. An automatic exhaust valve according to claim 1, characterized in that the top of the valve body (1) is provided with a protective cover (6), and a protective net (7) is arranged between the protective cover (6) and the valve body (1).

3. An automatic exhaust valve according to claim 1, characterized in that a through hole (201) is formed in the center of the guide frame (2), the sealing plug (3) is in sliding fit with the through hole (201) of the guide frame (2), the sealing plug (3) comprises a movable valve core (8), a guide rod (9) in sliding fit with the movable valve core (8) is sleeved in the movable valve core (8), and the other end of the guide rod (9) is connected with the floating ball (4).

4. An automatic exhaust valve according to claim 3, characterized in that the movable valve core (8) is provided with a cavity (801), a micro-row sealing seat (10) capable of sliding vertically is arranged in the cavity (801), a vertical hole (802) communicated with the cavity (801) is formed in the top of the movable valve core (8), and a horizontal hole (803) communicated with the cavity (801) is formed in the side face of the movable valve core.

5. The automatic exhaust valve according to claim 4, wherein the inner wall of the cavity (801) is provided with symmetrically arranged vertical grooves (804), the guide rod (9) is provided with a pin shaft (11), and two ends of the pin shaft (11) are inserted into the vertical grooves (804).

6. An automatic exhaust valve according to claim 1, characterized in that the inner wall of the valve body (1) is provided with a limit guide rib (12) for limiting the horizontal movement of the floating ball (4).

7. An automatic exhaust valve according to claim 6, characterized in that the limit guide ribs (12) are provided with four, and the four limit guide ribs (12) are symmetrically distributed along the central axis of the valve body (1).

8. An automatic exhaust valve according to claim 1, characterized in that the inner wall of the valve body (1) is provided with a protective cover (13) for protecting the float ball (4).