Single-port exhaust valve

Abstract

The utility model discloses a single-port exhaust valve which comprises a valve body, the upper end of the valve body is of an opening structure, a valve cover is arranged at the upper end of the valve body, an exhaust pipe is arranged in the middle of the valve cover, a floating ball is connected into the valve body in a sliding mode, and the single-port exhaust valve further comprises a plugging mechanism. The blocking mechanism comprises a supporting plate, a sliding column, a valve element and a spring, the supporting plate is arranged in the valve body, the middle of the supporting plate is vertically connected with the sliding column in a sliding mode, the valve element is arranged at the upper end of the sliding column, the outer arc face of the sliding column is movably sleeved with the spring, the upper end of the spring is fixedly connected with the supporting plate, and the lower end of the spring is fixedly connected with the lower end of the sliding column. The floating ball is guided to move along the specified track, upper and lower acting forces are applied to the floating ball in the blocked state, the probability that the floating ball shakes due to fluctuation of the liquid level is reduced, the position of the floating ball in the blocked state is more accurate, and the blocking accuracy of the single-port exhaust valve is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to single -mouth exhaust valve technical field, concretely is a single -mouth exhaust valve. BACKGROUND

[0002] Single -mouth exhaust valve it is a kind of one-way air release device for pipeline or equipment, mainly used to prevent equipment or pipeline internal air backflow, protect equipment and personnel safety, it is usually installed on the pipeline needing to exhaust, the opening degree of pressure reducing valve is adjusted to control the direction and flow size of air flow, when system pressure is too high or pressure maintaining discharge, single -mouth exhaust valve can adjust air flow, when system pressure drops, the medium pressure in pipeline is reduced by releasing gas, thereby protecting downstream equipment and personnel safety;In prior art, when the gas in the pipeline needs to be discharged, the air in the pipeline enters the exhaust valve cavity under the pressure of water, and is discharged from the exhaust nozzle, as the water in the pipeline fills the exhaust valve, the float ball moves upward under the buoyancy of water and blocks the exhaust nozzle, to achieve self-sealing, but part of single -mouth exhaust valve when using, the float ball in the plugging state is mainly subjected to the buoyancy provided by liquid, and the float ball is easy to sway with the fluctuation of liquid level, which can cause the position of float ball in plugging state to deviate, and affect the accuracy of plugging. SUMMARY

[0003] The utility model solves the technical problem of overcoming the defects of the prior art, provides a single -mouth exhaust valve, guides float ball to move along specified trajectory, exerts two forces on the float ball in plugging state, reduces the probability of float ball swaying due to liquid level fluctuation, makes the position of float ball in plugging state more accurate, improves the plugging accuracy of single -mouth exhaust valve, and can effectively solve the problems in the background art.

[0004] To achieve the above object, the utility model provides the following technical scheme: a single -mouth exhaust valve, including valve body, the upper end of valve body is open structure, the upper end of valve body is equipped with valve cover, the middle part of valve cover is equipped with exhaust pipe, the inside of valve body is slidably connected with float ball, still include plugging mechanism;

[0005] Plugging mechanism: it includes support plate, slide column, valve core and spring, the inside of valve body is provided with support plate, the middle part of support plate is vertically slidably connected with slide column, the upper end of slide column is equipped with valve core, the outer cam surface of slide column is movably sleeved with spring, the upper end of spring is fixedly connected with support plate, the lower end of spring is fixedly connected with the lower end of slide column, guide float ball to move along specified trajectory, exert two forces on the float ball in plugging state, reduce the probability of float ball swaying due to liquid level fluctuation, make the position of float ball in plugging state more accurate, improve the plugging accuracy of single -mouth exhaust valve.

[0006] Furthermore, the sealing mechanism also includes a top plate, which is disposed at the lower end of the sliding column. The lower surface of the top plate is spherical to facilitate contact between the float and the sliding column.

[0007] Furthermore, the sealing mechanism also includes arc-shaped plates, which are respectively disposed at the left and right ends of the lower surface of the support plate. The float is vertically slidably connected between the two arc-shaped plates to guide the movement trajectory of the float.

[0008] Furthermore, a protective ring is provided on the lower surface of the support plate, and the spring is located inside the protective ring to prevent excessive compression of the spring and improve the service life of the spring.

[0009] Furthermore, a filter screen is provided at the upper end of the exhaust pipe to prevent external dust from entering the interior of the exhaust pipe.

[0010] Furthermore, bolts are inserted into the round holes on the surface of the valve cover, and the lower ends of the bolts pass through the insertion holes on the surface of the valve body and are threaded with nuts. A sealing gasket is provided in the groove on the upper surface of the valve body to seal the valve cover and the valve body.

[0011] Furthermore, the upper end of the outer arc surface of the valve core is tapered, which facilitates the valve core entering the exhaust pipe and gradually sealing the exhaust pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This single-port exhaust valve has the following advantages:

[0013] The system guides the float to move along a designated trajectory, applying both upper and lower forces to the float in the blocked state. This reduces the probability of the float swaying due to liquid surface fluctuations, making the float's position more accurate in the blocked state and improving the sealing accuracy of the single-port vent valve. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the novel structure of the overall device, viewed from the front.

[0016] Figure 3 This is an enlarged structural diagram of point A in this utility model;

[0017] Figure 4 This is a top view of the overall device of this utility model.

[0018] In the diagram: 1 Valve body, 2 Valve cover, 3 Exhaust pipe, 4 Float, 5 Sealing mechanism, 51 Support plate, 52 Sliding column, 53 Valve core, 54 Spring, 55 Top plate, 56 Arc plate, 6 Protective ring, 7 Filter screen, 8 Bolt, 9 Sealing gasket. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-4 This embodiment provides a technical solution: a single-port exhaust valve, including a valve body 1, the upper end of the valve body 1 is an open structure to provide space for the installation of the exhaust valve assembly, a valve cover 2 is provided at the upper end of the valve body 1 to close the upper end of the valve body 1, an exhaust pipe 3 is provided in the middle of the valve cover 2 to exhaust the air inside the valve body 1, a float ball 4 is slidably connected inside the valve body 1, when liquid enters the valve body 1, the liquid exerts an upward thrust on the float ball 4, and the float ball 4 is used to block the exhaust pipe 3, a filter screen 7 is provided at the upper end of the exhaust pipe 3 to block external dust from entering the exhaust pipe 3 and reduce the probability of the exhaust pipe 3 being blocked, bolts 8 are inserted into the round holes on the surface of the valve cover 2, the lower ends of the bolts 8 pass through the insertion holes on the surface of the valve body 1 and are threaded with nuts to connect the valve cover 2 and the valve body 1, a sealing gasket 9 is provided in the groove on the upper surface of the valve body 1 to seal the valve cover 2 and the valve body 1, and a sealing mechanism 5 is also included;

[0021] The sealing mechanism 5 includes a support plate 51, a sliding column 52, a valve core 53, and a spring 54. The support plate 51 is located inside the valve body 1. The sliding column 52 is vertically slidably connected to the middle of the support plate 51. The upper end of the sliding column 52 is equipped with the valve core 53. The outer arc surface of the sliding column 52 is movably fitted with the spring 54. The upper end of the spring 54 is fixedly connected to the support plate 51, and the lower end of the spring 54 is fixedly connected to the lower end of the sliding column 52. When liquid enters the valve body 1, the buoyancy of the liquid on the float 4 will push the float 4 upward. As the float 4 continues to move upward, the float 4 applies an upward force to the sliding column 52, overcoming the elastic force of the spring 54, and pushing the sliding column 52 and the valve core 53 upward. The valve core 53 is inserted into the exhaust pipe 3 to seal the exhaust pipe 3, preventing the liquid from flowing out of the exhaust pipe 3. At this time, under the elastic force of the spring 54, an upward force is applied to the float 4. The liquid exerts an upward force on the float 4, making the position of the float 4 more accurate in the blocking state. The blocking mechanism 5 also includes a top plate 55, which is set at the lower end of the sliding column 52. The lower surface of the top plate 55 is spherical, which facilitates the float 4 to exert force on the sliding column 52. The blocking mechanism 5 also includes an arc plate 56, which is set at the left and right ends of the lower surface of the support plate 51. The float 4 is vertically slidably connected between the two arc plates 56, which guides the movement trajectory of the float 4, so that the float 4 can only move up and down. The lower surface of the support plate 51 is provided with a protective ring 6, and the spring 54 is located inside the protective ring 6 to prevent the spring 54 from being over-compressed and to improve the service life of the spring 54. The upper end of the outer arc surface of the valve core 53 is conical. As the valve core 53 is gradually inserted into the exhaust pipe 3, the air flow rate in the exhaust pipe 3 is gradually reduced.

[0022] The working principle of the single-port exhaust valve provided by this utility model is as follows: In use, the float 4 is located between the lower ends of the two arc-shaped plates 56 under the action of gravity. Air is discharged from the exhaust pipe 3 through the valve body 1. When liquid enters the interior of the valve body 1, the buoyancy generated by the liquid on the float 4 will push the float 4 to move upward. Under the guidance of the arc-shaped plates 56, the float 4 moves vertically upward. When the float 4 contacts the top plate 55, as the float 4 continues to move upward, the float 4 applies an upward force to the top plate 55, overcoming the elastic force of the spring 54, and pushing the sliding column 52 and the valve core 53 to move upward. The valve core 53 is inserted into the exhaust pipe 3 to block the exhaust pipe 3 and prevent the liquid from flowing out of the exhaust pipe 3. At this time, under the action of the elastic force of the spring 54, a downward force is applied to the float 4, and the liquid applies an upward force to the float 4. Under the guidance and limitation of the spherical arc surface of the top plate 55 and the arc-shaped plates 56, the position of the float 4 in the blocked state is more accurate.

[0023] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A single-port exhaust valve, comprising a valve body (1), wherein the upper end of the valve body (1) is an open structure, a valve cover (2) is provided at the upper end of the valve body (1), an exhaust pipe (3) is provided in the middle of the valve cover (2), and a float (4) is slidably connected inside the valve body (1), characterized in that: It also includes a blocking mechanism (5); The sealing mechanism (5) includes a support plate (51), a sliding column (52), a valve core (53), and a spring (54). The support plate (51) is located inside the valve body (1). The middle part of the support plate (51) is vertically slidably connected to the sliding column (52). The upper end of the sliding column (52) is provided with the valve core (53). The outer arc surface of the sliding column (52) is movably sleeved with the spring (54). The upper end of the spring (54) is fixedly connected to the support plate (51), and the lower end of the spring (54) is fixedly connected to the lower end of the sliding column (52).

2. The single-port exhaust valve according to claim 1, characterized in that: The sealing mechanism (5) also includes a top plate (55), which is located at the lower end of the sliding column (52), and the lower surface of the top plate (55) is spherical.

3. A single-port exhaust valve according to claim 1, characterized in that: The sealing mechanism (5) also includes an arc plate (56), which is respectively disposed on the left and right ends of the lower surface of the support plate (51), and the float (4) is vertically slidably connected between the two arc plates (56).

4. A single-port exhaust valve according to claim 1, characterized in that: The lower surface of the support plate (51) is provided with a protective ring (6), and the spring (54) is located inside the protective ring (6).

5. A single-port exhaust valve according to claim 1, characterized in that: The upper end of the exhaust pipe (3) is provided with a filter screen (7).

6. A single-port exhaust valve according to claim 1, characterized in that: Bolts (8) are inserted into the round holes on the surface of the valve cover (2). The lower ends of the bolts (8) pass through the insertion holes on the surface of the valve body (1) and are threaded with nuts. A sealing gasket (9) is provided in the groove on the upper surface of the valve body (1).

7. A single-port exhaust valve according to claim 1, characterized in that: The upper end of the outer arc surface of the valve core (53) is conical.

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