Quick exhaust valve of semi-closed floating body

Abstract

The invention provides a quick exhaust valve of a semi-closed floating body, and relates to the technical field of valve bodies, the quick exhaust valve comprises a main body part, the main body part comprises an exhaust main body and a liquid flow main body which are communicated with each other, an exhaust valve group is mounted in the upper end of the exhaust main body, and the upper end of the exhaust valve group is communicated with an exhaust pipeline; the exhaust valve set comprises a first sealing valve set, the first sealing valve set comprises a first fixed valve body fixedly connected with the inner wall of the exhaust body and further comprises a first movable valve body movably connected with the inner wall of the exhaust body, and the first movable valve body moves upwards along the vertical axis to be meshed with the first fixed valve body to form a first sealing chamber to complete primary sealing. The first movable valve body moves downwards along the vertical axis and is staggered with the first fixed valve body so that gas can be exhausted. The sealing performance of the exhaust valve can be enhanced when the exhaust valve is closed, gas overflow is avoided when the exhaust valve is closed, the sealing effect is good, and the sealing life is greatly prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of valve bodies, and in particular to a quick exhaust valve of a semi-enclosed floating body. Background Art

[0002] The exhaust valve is installed in pipelines for transporting various types of liquids. It can discharge part of the gas in the liquid pipeline to ensure the normal transportation of the liquid in the pipeline.

[0003] Most traditional exhaust valves include a float and an opening and closing valve group built into the valve body. When the liquid level in the exhaust valve rises, the opening and closing valve group can be controlled to close to prevent liquid discharge. After the liquid level drops, the opening and closing valve group can be controlled to open to discharge excess gas. The internal structure of a traditional exhaust valve is relatively simple. The gas in the sewage contains some impurities. During the exhaust process, some impurities affect the normal closure of the valve body. Long-term use will affect the normal use of the exhaust valve and cause the overall sealing to deteriorate. Some designs will install a mesh cover on the outside of a single valve body, which can play a partial filtering role. However, the single valve body and the single filtering structure design will still affect the opening and closing sealing of the overall structure and affect the normal use of the exhaust valve. Summary of the invention

[0004] In view of the above problems, the present invention provides a quick exhaust valve of a semi-enclosed float, which can enhance the sealing of the exhaust valve when it is closed, avoid gas overflow when closed, and has good sealing effect, greatly extending the sealing life.

[0005] To solve the above problems, the technical solution adopted by the present invention is: A semi-enclosed floating quick exhaust valve comprises a main body, the main body comprises an exhaust body and a liquid flow body which are interconnected, an exhaust valve group is installed inside the upper end of the exhaust body, an exhaust pipe is connected to the upper end of the exhaust valve group, the exhaust valve group comprises a first sealing valve group, the first sealing valve group comprises a fixed valve body which is fixedly connected to the inner wall of the exhaust body, and also comprises a movable valve body which is movably connected to the inner wall of the exhaust body, the movable valve body moves upward along the vertical axis and bites with the fixed valve body to form a first sealing chamber to complete a primary seal, the movable valve body Move downward along the vertical axis and staggered with the fixed valve body for gas discharge, a filter ring located inside the moving path of the movable valve body is fixed to one side wall of the fixed valve body, a second sealing chamber connected to the exhaust pipe is formed on the inner side of the filter ring; the exhaust valve group also includes a second sealing valve group located inside the second sealing chamber, the second sealing valve group includes a fixed valve body 2 fixed to the exhaust pipe and a movable valve body 2 movable relative to the exhaust pipe, and also includes a telescopic rod located at the lower end of the movable valve body 2, the telescopic rod is controlled to extend to push the movable valve body 2 and the fixed valve body 2 to press together to complete the secondary seal.

[0006] Preferably, a float device is also provided inside the exhaust body, and the float device includes a float shell and a pressure detection device located inside the float shell, and the movable valve body 1 is controlled to move upwards through the float shell, and the movable valve body 2 is controlled to move upwards through the pressure detection device.

[0007] Preferably, the float housing is hollow inside to form a float chamber, the float chamber is of closed design, and the upper end of the float housing is connected to the lower end of the movable valve body through a connecting workpiece.

[0008] Preferably, the pressure detection device includes a detection shell fixedly connected to the float shell, a movable detection piston is arranged on the inner wall of the detection shell, the detection piston and the detection shell are sealed, a second detection chamber connected to the float chamber is formed on the inner side of the detection piston, and the float chamber and the telescopic rod are in a connected state through a connecting pipe.

[0009] Preferably, the exhaust pipe is connected to a backwashing device, and a cleaning drainage pipe connected to the first sealing chamber is provided at a lower end of the movable valve body. The backwashing device controls the inclined liquid to pass through the second sealing chamber, the filter ring, the first sealing chamber in sequence and finally be discharged from the cleaning drainage pipe to complete the backwashing of the filter ring.

[0010] Preferably, a first detection chamber is formed on the outside of the detection piston, the first detection chamber is connected to the inside of the exhaust body, a filter cover is installed on the outside of the first detection chamber, the lower end of the cleaning and drainage pipe is connected to the first detection chamber, and a one-way valve is installed inside the cleaning and drainage pipe.

[0011] Preferably, a first limiting ring and a second limiting ring are fixed to one side wall of the fixed valve body, the first limiting ring and the second limiting ring are located on the moving path of the movable valve body 1 and are arranged at intervals, and a locking assembly is also installed between the first limiting ring and the movable valve body 1.

[0012] Preferably, an elastic element and a position sensing element are installed between the detection piston and the inner wall of the detection housing, and the position sensing element is electrically connected to the backwashing device.

[0013] The beneficial effects of the present invention are: Compared with the prior art, by providing two sets of sealing valve groups, different sealing barriers can be formed on the gas flow path, which can enhance the sealing of the exhaust valve when it is closed and prevent gas from overflowing when it is closed; at the same time, a filter ring is installed between the two sets of sealing valve groups, and some small particle impurities in the gas can be filtered through the filter ring, which can prevent the inner second sealing valve group from being contaminated, thereby ensuring that the inner second sealing valve group is always in a clean state, the inner second sealing valve group has a good sealing effect, and the sealing life is greatly extended. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0015] Figure 2 For the present invention Figure 1 Schematic diagram of the side structure.

[0016] Figure 3 For the present invention Figure 2 AA section view of the structure.

[0017] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure at B.

[0018] Figure 5 For the present invention Figure 3 Enlarged structural diagram at C.

[0019] Figure 6 For the present invention Figure 3 Enlarged structural diagram at D.

[0020] In the figure: 100, main part; 110, exhaust body; 111, exhaust pipe; 120, liquid flow body; 200, float device; 210, float shell; 2101, float chamber; 220, pressure detection device; 2201, first detection chamber; 2202, second detection chamber; 221, detection shell; 222, detection piston; 300, first sealing valve group; 310, movable valve body one; 3101, first sealing chamber; 320, fixed valve body one; 3201, second sealing chamber; 321, first limiting ring; 322, second limiting ring; 323, filter ring; 400, connecting pipe; 500, second sealing valve group; 510, fixed valve body two; 520, movable valve body two; 530, telescopic rod; 5301, telescopic control chamber; 600, cleaning and drainage pipe; 610, one-way valve; 700, connecting workpiece. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] In order to solve the problems mentioned in the background technology; Figure 1 - Attachment Figure 6 A semi-enclosed floating quick exhaust valve includes a main body 100, which includes an exhaust body 110 and a liquid flow body 120 that are interconnected. An exhaust valve group is installed inside the upper end of the exhaust body 110. Sewage flows in a direction in the liquid flow body 120. After the gas in the sewage flows through the exhaust body 110, it enters the exhaust body 110 and is finally discharged from the exhaust valve group.

[0023] The exhaust pipe 111 is connected to the upper end of the exhaust valve group. The exhaust valve group includes a first sealing valve group 300. The exhaust pipe 111 can be controlled to be in a conducting or closed state through the first sealing valve group 300. The first sealing valve group 300 includes a fixed valve body 320 fixedly connected to the inner wall of the exhaust body 110, and also includes a movable valve body 310 movably connected to the inner wall of the exhaust body 110. The movable valve body 310 moves upward along the vertical axis and engages with the fixed valve body 320 to form a first sealing chamber 3101 to complete a The movable valve body 310 moves downward along the vertical axis to be staggered with the fixed valve body 320 to discharge gas. The height position of the movable valve body 310 is controlled according to the liquid level in the exhaust body 110. When the liquid level in the exhaust body 110 is too high, the movable valve body 310 moves upward to engage with the fixed valve body 320 to achieve sealing. When the liquid level in the exhaust body 110 drops, the movable valve body 310 moves downward to be staggered with the fixed valve body 320 to discharge gas.

[0024] A filter ring 323 located inside the moving path of the movable valve body 310 is fixed on the side wall of the fixed valve body 320, and a second sealed chamber 3201 connected to the exhaust pipe 111 is formed inside the filter ring 323; the exhaust valve group also includes a second sealed valve group 500 located inside the second sealed chamber 3201, and some impurities can be filtered through the filter ring 323 to prevent impurities from entering the second sealed valve group 500, thereby ensuring the sealing stability of the second sealed valve group 500.

[0025] The second sealing valve group 500 includes a fixed valve body 510 fixed to the exhaust pipe 111 and a movable valve body 520 that is relatively movable with the exhaust pipe 111, and also includes a telescopic rod 530 located at the lower end of the movable valve body 520. The telescopic rod 530 is controlled to extend to push the movable valve body 520 and the fixed valve body 510 to form a secondary seal. The telescopic state of the telescopic rod 530 is also controlled according to the state of the liquid in the exhaust main body 110. Controlling the extension of the telescopic rod 530 can control the movable valve body 520 to fit with the fixed valve body 510 to achieve sealing between the two, and can form a secondary sealing barrier to avoid gas leakage. At the same time, controlling the contraction of the telescopic rod 530 can control the fixed valve body 510 and the movable valve body 520 to be staggered, so as to achieve rapid discharge of gas.

[0026] In summary, through the above-mentioned structural design, by setting up two groups of sealing valve groups, different sealing barriers can be formed on the gas flow path, which can enhance the sealing of the exhaust valve when it is closed and avoid gas overflow when it is closed; at the same time, a filter ring 323 is installed between the two groups of sealing valve groups, and some small particle impurities in the gas can be filtered through the filter ring 323, which can avoid the inner second sealing valve group 500 from being contaminated, thereby ensuring that the internal second sealing valve group 500 is always in a clean state, the inner second sealing valve group 500 has a good sealing effect, and the sealing life is greatly extended.

[0027] A float device 200 is also provided inside the exhaust body 110. The float device 200 includes a float housing 210 and a pressure detection device 220 located inside the float housing 210. The movable valve body 1 310 is controlled to move upward by the float housing 210, and the movable valve body 2 520 is controlled to move upward by the pressure detection device 220.

[0028] When the liquid level in the exhaust body 110 rises, the float device 200 moves upward under the action of buoyancy. During the upward movement, the float device 200 can drive the movable valve body 310 of the first sealing valve group 300 to move upward synchronously, and can control the movable valve body 310 and the fixed valve body 320 to fit tightly together to form a sealing barrier to prevent gas overflow.

[0029] When the first sealing valve group 300 is in a sealed state, the pressure in the exhaust body 110 gradually increases. Under the action of pressure, the telescopic rod 530 can be controlled to extend to control the movable valve body 2 520 to move toward the fixed valve body 2 510, forming a secondary sealing barrier, which can further prevent part of the gas from overflowing after the pressure increases, thereby ensuring the overall sealing of the exhaust valve and avoiding water leakage.

[0030] A float chamber 2101 is formed hollow inside the float housing 210. The float chamber 2101 is of closed design. The upper end of the float housing 210 is connected to the lower end of the movable valve body 310 through a connecting workpiece 700. The hollow float housing 210 has a large buoyancy and can push the movable valve body 310 to move upward as a whole.

[0031] The connecting workpiece 700 here can be selected as a ring or a lever connecting assembly. The buoyancy can be amplified through the lever connecting assembly to push the movable valve body 310 to move upward stably as a whole. A guide structure is installed on the outer side of the movable valve body 310 here. The movable valve body 310 moves upward along a predetermined trajectory as a whole, which can ensure that the movable valve body 310 and the fixed valve body 320 are accurately engaged to form a sealing structure.

[0032] Specifically; the pressure detection device 220 includes a detection shell 221 fixedly connected to the float shell 210, and a movable detection piston 222 is arranged on the inner wall of the detection shell 221. The detection piston 222 and the detection shell 221 are sealed, and a second detection chamber 2202 connected to the float chamber 2101 is formed on the inner side of the detection piston 222. The float chamber 2101 and the telescopic rod 530 are in a connected state through the connecting pipe 400.

[0033] When the pressure in the exhaust body 110 increases, it can push the detection piston 222 to move upward, compressing the gas in the second detection chamber 2202 and the float chamber 2101. The float chamber 2101 is connected to the telescopic rod 530, and the telescopic rod 530 can be controlled to extend, thereby realizing the sealing and closing control of the second sealing valve group 500.

[0034] On the contrary, when the pressure in the exhaust body 110 decreases, the suction detection piston 222 moves downward, which can control the movable valve body 2 520 and the telescopic rod 530 to move in opposite directions, thereby resetting the overall structure and preparing for subsequent exhaust.

[0035] An elastic reset element may be installed between the detection piston 222 and the detection housing 221 , which can accelerate the downward movement of the detection piston 222 and achieve overall rapid reset.

[0036] The exhaust pipe 111 is connected to a backwashing device, and a cleaning drainage pipe 600 connected to the first sealed chamber 3101 is provided at the lower end of the movable valve body 310. The backwashing device controls the inclined liquid to pass through the second sealed chamber 3201, the filter ring 323, and the first sealed chamber 3101 in sequence, and finally be discharged from the cleaning drainage pipe 600 to complete the backwashing of the filter ring 323.

[0037] The backwashing device can pump cleaning liquid into the first sealed chamber 3101. After the cleaning liquid is pumped in, it can move in the opposite direction of the exhaust. The liquid can backwash the holes on the surface of the filter ring 323, and finally the backwashed liquid is discharged from the cleaning drain pipe 600, realizing the unidirectional directional movement of the liquid.

[0038] At the same time, the liquid of the backwashing device can directly clean the movable valve body 520 and the fixed valve body 510, flushing a small amount of residual powder, avoiding the residue of impurities, and further improving the sealing performance of the second sealing valve group 500.

[0039] The cleaning and draining pipe 600 here can be directly connected to the inside of the exhaust body 110, and can also be connected to a separate collection box outside the exhaust body 110.

[0040] A first detection chamber 2201 is formed on the outside of the detection piston 222, and the first detection chamber 2201 is connected to the inside of the exhaust body 110. A filter cover is installed on the outside of the first detection chamber 2201. The lower end of the cleaning and drainage pipe 600 is connected to the first detection chamber 2201, and a one-way valve 610 is installed inside the cleaning and drainage pipe 600.

[0041] Through the above structural design, the liquid cleaned in the first sealed chamber 3101 can be discharged into the first detection chamber 2201 through the cleaning drainage pipe 600 to backwash the filter screen in the first detection chamber 2201, thereby ensuring the cleanliness of the filter screen and avoiding the impact of clogging.

[0042] It should be noted here that the filtering aperture of the filter screen is larger than the filtering aperture of the filter ring 323. Some small-sized impurity particles contained in the filter ring 323 can quickly pass through the filter screen from the inside, thereby achieving rapid filtration and purification of the filter screen to avoid clogging.

[0043] Please refer to the attached Figure 4 A first limiting ring 321 and a second limiting ring 322 are fixed to the side wall of the fixed valve body 320. The first limiting ring 321 and the second limiting ring 322 are located on the moving path of the movable valve body 310 and are arranged at intervals. A locking assembly is also installed between the first limiting ring 321 and the movable valve body 310.

[0044] By setting the first limiting ring 321 and the second limiting ring 322, the movable valve body 310 can be blocked and limited to prevent the movable valve body 310 from moving beyond a predetermined range. The movable valve body 310 here is also annular as a whole, and the cross-section of the first limiting ring 321 can be selected to be a matching L-shape, which can extend the sealing gap between the movable valve body 310 and the first limiting ring 321 and enhance the sealing effect.

[0045] An elastic element and a position sensing element are installed between the detection piston 222 and the inner wall of the detection housing 221. The position sensing element is electrically connected to the backwashing device. The position sensing element here can be selected as an existing electrical position sensing element. When the detection piston 222 moves to different positions, it can send out different electrical signals. Through the above-mentioned structural design, when the detection piston 222 is at the bottom position, the backwashing device is controlled to open to realize backwashing of the second sealing valve group 500 and the filter ring 323.

[0046] When the detection piston 222 gradually moves upward, the flushing liquid flow of the backwashing device is controlled to gradually decrease until it is closed, so as to avoid excessive resistance to the normal closing of the movable valve body 2 520 and avoid any impact.

[0047] At the same time, during the gradual closing of the movable valve body 520, the gap between the movable valve body 520 and the fixed valve body 510 gradually decreases, and the flow rate of the cleaning liquid can be gradually increased during this cleaning process, thereby enhancing the overall cleaning effect.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A semi-enclosed floating quick exhaust valve, comprising a main body (100), the main body (100) comprising an exhaust body (110) and a liquid flow body (120) which are connected to each other, an exhaust valve group is installed inside the upper end of the exhaust body (110), and an exhaust pipe (111) is connected to the upper end of the exhaust valve group, characterized in that: The exhaust valve assembly comprises a first sealing valve assembly (300), the first sealing valve assembly (300) comprising a fixed valve body (320) fixedly connected to the inner wall of the exhaust body (110), and also comprising a movable valve body (310) movably connected to the inner wall of the exhaust body (110), the movable valve body (310) moving upward along the vertical axis to engage with the fixed valve body (320) to form a first sealing chamber (3101) to complete a primary seal, the movable valve body (310) moving downward along the vertical axis to stagger with the fixed valve body (320) to allow gas to be discharged, a filter ring (323) located inside the moving path of the movable valve body (310) is fixed to the side wall of the fixed valve body (320), and a second sealing chamber (3201) communicating with the exhaust pipe (111) is formed inside the filter ring (323); The exhaust valve assembly further comprises a second sealing valve assembly (500) located inside the second sealing chamber (3201), the second sealing valve assembly (500) comprising a second fixed valve body (510) fixed to the exhaust pipe (111) and a second movable valve body (520) movable relative to the exhaust pipe (111), and further comprising a telescopic rod (530) located at the lower end of the second movable valve body (520), the telescopic rod (530) being controlled to extend to push the second movable valve body (520) against the second fixed valve body (510) to complete secondary sealing.

2. A quick exhaust valve for a semi-enclosed float according to claim 1, characterized in that: A float device (200) is also provided inside the exhaust body (110), and the float device (200) comprises a float housing (210) and a pressure detection device (220) located inside the float housing (210). The float housing (210) is used to control the movable valve body 1 (310) to move upward, and the pressure detection device (220) is used to control the movable valve body 2 (520) to move upward.

3. A quick exhaust valve for a semi-enclosed float according to claim 2, characterized in that: The float housing (210) is hollow inside to form a float chamber (2101), and the float chamber (2101) is of closed design. The upper end of the float housing (210) is connected to the lower end of the movable valve body (310) through a connecting workpiece (700).

4. A quick exhaust valve for a semi-enclosed float according to claim 3, characterized in that: The pressure detection device (220) comprises a detection housing (221) fixedly connected to the float housing (210); a movable detection piston (222) is arranged on the inner wall of the detection housing (221); a seal is arranged between the detection piston (222) and the detection housing (221); a second detection chamber (2202) connected to the float chamber (2101) is formed on the inner side of the detection piston (222); and the float chamber (2101) and the telescopic rod (530) are in a connected state via a connecting pipe (400).

5. A quick exhaust valve for a semi-enclosed float according to claim 4, characterized in that: The exhaust pipe (111) is connected to a backwashing device, and a cleaning drainage pipe (600) connected to the first sealed chamber (3101) is provided at the lower end of the movable valve body (310). The backwashing device controls the inclined liquid to pass through the second sealed chamber (3201), the filter ring (323), and the first sealed chamber (3101) in sequence and finally be discharged from the cleaning drainage pipe (600) to complete the backwashing of the filter ring (323).

6. A quick exhaust valve for a semi-enclosed float according to claim 5, characterized in that: A first detection chamber (2201) is formed on the outside of the detection piston (222), the first detection chamber (2201) is connected to the inside of the exhaust body (110), a filter screen is installed on the outside of the first detection chamber (2201), the lower end of the cleaning and drainage pipe (600) is connected to the first detection chamber (2201), and a one-way valve (610) is installed inside the cleaning and drainage pipe (600).

7. A quick exhaust valve for a semi-enclosed float according to claim 6, characterized in that: A first limiting ring (321) and a second limiting ring (322) are fixed to the side wall of the fixed valve body 1 (320); the first limiting ring (321) and the second limiting ring (322) are located on the moving path of the movable valve body 1 (310) and are arranged at intervals; a locking assembly is also installed between the first limiting ring (321) and the movable valve body 1 (310).

8. The quick exhaust valve of a semi-enclosed floating body according to claim 5, characterized in that: An elastic element and a position sensing element are installed between the detection piston (222) and the inner wall of the detection housing (221), and the position sensing element is electrically connected to the backwashing device.

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