Exhaust valve of water supply pipeline

Abstract

The invention discloses a water supply pipeline exhaust valve, and belongs to the technical field of pipeline exhaust valves, the exhaust valve comprises an exhaust valve body, the top of the exhaust valve body is detachably connected with a sealing valve cover, the bottom of the inner side of the exhaust valve body is provided with an air inlet, and a sealing top cover is inserted in the center of the sealing valve cover; a U-shaped frame, a connecting rod and a sealing top cover have downward pressure through the elastic force of a first reset spring in an arranged moving assembly, when the pressure in a pipeline is larger than the downward pressure of the first reset spring, the U-shaped frame moves upwards on the outer wall of a sliding rod body, and therefore exhausting can be conducted; the air pressure in the pipeline is too large to jack up the sealing ball body, so that the sealing top cover can move upwards through the U-shaped frame and the connecting rod, air can be exhausted outwards, after the air pressure is exhausted, the sealing ball body, the U-shaped frame and the connecting rod are reset through gravity, and therefore the air inlet can be blocked; and external dust cannot enter the exhaust valve body.

Description

Technical Field

[0001] The invention belongs to the technical field of pipeline exhaust valves, and in particular relates to an exhaust valve for a water supply pipeline. Background Art

[0002] A water supply project is a project that supplies water for living, production, etc. to water users. The task of a water supply project is to supply water to cities and residential areas, industrial enterprises, railway transportation, agriculture, construction sites, and the military, and must ensure the water quantity, water quality, and water pressure requirements of the above-mentioned users. At the same time, it must undertake fire-fighting tasks in water-using areas. The role of a water supply project is to collect natural surface water or groundwater, and after certain treatment, make it meet the water quality standards for industrial production water and residents' drinking water, and use economical and reasonable distribution methods to transport it to various users. Water supply projects play an important role in the construction and development of industry and agriculture, in improving people's material and cultural life, and in the protection of health and safety.

[0003] The exhaust valve is when there is gas overflow in the system. The gas will climb up along the pipe and finally gather at the highest point of the system. The exhaust valve is generally installed at the highest point of the system. When the gas enters the exhaust valve cavity, it gathers at the upper part of the exhaust valve. As the gas in the valve increases, the pressure rises. When the gas pressure is greater than the system pressure, the gas will cause the water level in the cavity to drop, and the float will drop with the water level, opening the exhaust port. After the gas is exhausted, the water level rises, and the float also rises, closing the exhaust port. In the same way, when negative pressure is generated in the system, the water level in the valve cavity drops, and the exhaust port opens. Since the external atmospheric pressure is greater than the system pressure at this time, the atmosphere will enter the system through the exhaust port to prevent the harm of negative pressure. If the valve cap on the exhaust valve body is tightened, the exhaust valve stops exhausting. Under normal circumstances, the valve cap should be in the open state. The exhaust valve can also be used in conjunction with the isolation valve to facilitate the maintenance of the exhaust valve.

[0004] At present, Chinese patent CN220416255U discloses a water supply pipe exhaust valve, including a base, an exhaust valve body, a dust cover and an exhaust pipe, four first nuts are arranged on the upper surface of the base, an exhaust valve body is arranged on the middle upper surface of the base, the exhaust valve body is funnel-shaped, the lower end opening of the exhaust valve body is smaller than the upper end opening, a rubber pad is arranged on the upper surface of the exhaust valve body, and a filter is arranged inside the lower end of the exhaust valve body. The exhaust valve has a reasonable structure. The device has better sealing performance of the exhaust hole of the device by adding sliders and slide rods on both sides of the float. By arranging an arch bracket and a dust cover, the device is exhausted to both sides of the top of the exhaust pipe. At the same time, the dust cover effectively prevents dust and debris from entering the interior of the device through the exhaust pipe. By arranging the first nut and the second nut, the device can be quickly opened for maintenance and repair, which increases its service life, improves work efficiency, and reduces maintenance costs.

[0005] Although the above-mentioned prior art can reduce the entry of dust through the dust cover, due to the gap between the dust cover and the exhaust hole, external dust can still enter the interior, thereby causing the exhaust valve to fail to exhaust normally, resulting in damage to the exhaust valve. Summary of the invention

[0006] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0007] In order to solve the problem raised in the above background technology that there is a gap between the dust cover and the exhaust hole, so that external dust can still enter the interior, resulting in the exhaust valve being unable to exhaust normally and causing damage to the exhaust valve, the present invention adopts the following technical solution.

[0008] A water supply pipeline exhaust valve comprises an exhaust valve body, a sealing valve cover is detachably connected to the top of the exhaust valve body, a funnel head is fixedly connected to the bottom of the exhaust valve body, a connecting flange is fixedly connected to the outer edge of the bottom of the funnel head, an air inlet is arranged at the inner bottom of the exhaust valve body, a sealing top cover is plugged into the center of the sealing valve cover, a connecting rod is fixedly connected to the bottom of the sealing top cover, a U-shaped frame with an opening facing downward is fixedly connected to the bottom of the connecting rod, connecting rods are fixedly connected to the inner sides of the U-shaped frame, a sealing ball is detachably connected between the connecting rods on both sides, a moving component is installed inside the exhaust valve body, and the moving component causes the sealing top cover to have a downward pressing force.

[0009] Preferably, first sliding grooves are provided on both sides of the inner wall of the exhaust valve body, and opening pressure regulating components are installed inside the first sliding grooves on both sides, and the pressure regulating components are connected to the outer wall of the sliding rod body.

[0010] Preferably, a rubber sealing ring is provided at the bottom of the sealing top cover, and the sealing valve cover and the exhaust valve body are fixed by a plurality of fastening bolts.

[0011] Preferably, a plug-in flange is fixedly connected to the bottom of the sealing valve cover, and the plug-in flange is inserted into the interior of the exhaust valve body.

[0012] Preferably, the moving assembly comprises a sliding rod body and a first return spring, and the first return spring is arranged on the outer wall of the sliding rod body between the U-shaped frames on both sides and the sealing valve cover.

[0013] Preferably, the opening pressure regulating assembly includes a hexagonal head, an external thread groove, a threaded ring and a first sliding groove. The outer walls of the sliding rod bodies on both sides are provided with external thread grooves near the upper ends. The outer walls of the external thread grooves on both sides are threadedly connected with threaded rings. The threaded rings on both sides are slidingly connected to the inside of the first sliding grooves on both sides. The upper ends of the sliding rod bodies on both sides pass through the sealing valve cover and are detachably connected with the hexagonal heads. The upper ends of the sliding rod bodies on both sides are installed with a linkage assembly, which enables the sliding rod bodies on both sides to rotate simultaneously.

[0014] Preferably, the linkage assembly includes a first sprocket, a second sprocket and a drive chain. The first sprocket is fixedly connected between the sliding rod bodies and the hexagonal heads on both sides. The first sprockets on both sides are located above the sealing valve cover. The second sprockets on both sides are rotatably connected to the outer walls of the sealing valve cover. The second sprockets on both sides and the outer walls of the sliding blocks on both sides are sleeved with the drive chain. A tensioning assembly is installed on the sealing valve cover, and the tensioning assembly keeps the drive chain in a taut state.

[0015] Preferably, the tensioning assembly includes a second sliding groove, a second return spring and a sliding block. Second sliding grooves are provided on both sides of the upper end of the sealing valve cover. The bottom of the second sprockets on both sides are fixedly connected with sliding blocks. The sliding blocks are slidably connected to the inside of the second sliding grooves. The outer walls of the sliding blocks on both sides near the center of the sealing valve cover are fixedly connected with second return springs. A rubber sealing ring is provided at the bottom of the sealing top cover.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The elastic force of the first return spring in the movable assembly is used to apply downward pressure to the U-shaped frame, the connecting rod and the sealing top cover. When the pressure in the pipeline is greater than the downward pressure of the first return spring, the U-shaped frame moves upward on the outer wall of the sliding rod body, thereby enabling exhaust. The excessive gas pressure in the pipeline pushes the sealing ball upward, thereby enabling the sealing top cover to move upward through the U-shaped frame and the connecting rod, thereby enabling air to be exhausted outward. After the air pressure is exhausted, the sealing ball, the U-shaped frame and the connecting rod are reset by gravity, thereby blocking the air inlet, preventing external dust from entering the interior of the exhaust valve body.

[0018] 2. The hexagonal heads on both sides of the opening pressure adjustment assembly are rotated to rotate the sliding rod bodies on both sides, so that the threaded collars on both sides can move downward to compress the first return spring, thereby increasing the pressure of the sealing ball moving upward, thereby achieving the effect of adjusting the exhaust pressure of the exhaust valve opening.

[0019] 3. By setting the second sprocket in the linkage assembly and the drive chain, rotating the sliding rod on one side can cause the sliding rod on the other side to rotate simultaneously, making adjustment more convenient.

[0020] 4. The elastic force of the second return spring in the tensioning assembly makes the second sprockets on both sides always move outward, so that the drive chain can be kept in a taut state, which makes the transmission more stable. The setting of the rubber sealing ring can make the sealing performance better after the sealing top cover falls into the upper end of the sealing valve cover, making it more difficult for external impurities to enter the interior of the exhaust valve body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the structure of a water supply pipeline exhaust valve in the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of the exhaust valve body in the present invention;

[0023] Figure 3 It is a schematic diagram of the cross-sectional structure of the sealing top cover in the present invention;

[0024] Figure 4 It is a schematic diagram of the U-shaped frame structure in the present invention;

[0025] Figure 5 This is a schematic diagram of the sealing valve cover structure of the present invention;

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of the sealing valve cover in the present invention;

[0027] Figure 7 For the present invention Figure 6 Enlarged structural diagram at A in the middle.

[0028] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0029] 100. Exhaust valve body; 101. Funnel head; 102. Connecting flange;

[0030] 103. first sliding groove; 104. air inlet;

[0031] 200, sealing top cover; 201, connecting rod; 202, U-shaped frame; 203, sealing sphere;

[0032] 204, connecting rod; 205, sliding rod body; 206, external thread groove; 207, first sprocket;

[0033] 208, hexagonal head; 209, first return spring; 210, threaded collar;

[0034] 300, sealing valve cover; 301, fastening bolts; 302, second sprocket; 303, driving chain;

[0035] 304, plug-in flange; 305, second sliding groove; 306, second return spring; 307, sliding block; 308, rubber sealing ring. DETAILED DESCRIPTION

[0036] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0037] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0038] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments. The present invention provides the following embodiments.

[0039] like Figure 1 As shown, it is a schematic diagram of the structure of a water supply pipeline exhaust valve in a preferred embodiment of the present invention. The water supply pipeline exhaust valve in this embodiment includes an exhaust valve body 100, and the top of the exhaust valve body 100 is detachably connected to a sealing valve cover 300, the sealing valve cover 300 and the exhaust valve body 100 are fixed by a plurality of fastening bolts 301, a sealing top cover 200 is inserted at the center of the sealing valve cover 300, the bottom of the exhaust valve body 100 is fixedly connected to a funnel head 101, and the outer edge of the bottom of the funnel head 101 is fixedly connected to a connecting flange 102. In this embodiment, the exhaust valve is connected to the pipeline through the connecting flange 102. The sealing top cover 200 can be inserted into the sealing valve cover 300 when not exhausting to prevent external dust from entering the exhaust valve body 100. When exhausting, the sealing top cover 200 moves upward, so that the internal air is discharged outward from the gap between the sealing top cover 200 and the sealing valve cover 300. After the gas is exhausted, it can be reset, thereby increasing the sealing performance, preventing external dust from entering the exhaust valve body 100, and increasing the service life of the exhaust valve.

[0040] like Figure 2 as well as Figure 3As shown, it is a schematic diagram of the exhaust valve body structure and a schematic diagram of the cross-sectional structure of the sealing top cover in this embodiment, the bottom of the sealing top cover 200 is fixedly connected with a connecting rod 201, the bottom of the connecting rod 201 is fixedly connected with a U-shaped frame 202 with an opening facing downward, the inner sides of the U-shaped frame 202 are fixedly connected with connecting rods 204, and a sealing ball 203 is detachably connected between the connecting rods 204 on both sides, and an air inlet 104 is provided at the inner bottom of the exhaust valve body 100. In this embodiment, the gas pressure in the pipeline is too high to push the sealing ball 203 upward, so that the sealing top cover 200 can be moved upward through the U-shaped frame 202 and the connecting rod 201, so that the air can be exhausted outward, and after the air pressure is exhausted, the sealing ball 203, the U-shaped frame 202 and the connecting rod 201 are reset by gravity, so that the air inlet 104 can be blocked.

[0041] like Figure 2 , Figure 3 as well as Figure 4 As shown, it is a schematic diagram of the exhaust valve body structure, a schematic diagram of the sealing top cover cross-sectional structure and a schematic diagram of the U-shaped frame structure in this embodiment, the vertical sides of the U-shaped frame 202 on both sides pass through the sliding rod body 205, the tops of the sliding rod bodies 205 on both sides pass through the sealing valve cover 300, and a first return spring 209 is arranged on the outer wall of the sliding rod body 205 between the U-shaped frames 202 on both sides and the sealing valve cover 300. In this embodiment, the elastic force of the first return spring 209 makes the U-shaped frame 202, the connecting rod 201 and the sealing top cover 200 have downward pressure, and when the pressure in the pipeline is greater than the downward pressure of the first return spring 209, the U-shaped frame 202 moves upward on the outer wall of the sliding rod body 205, so that exhaust can be performed.

[0042] It is worth noting that the above-mentioned sliding rod body 205 and the first return spring 209 are the moving components in this embodiment, and the moving components include but are not limited to the above-mentioned sliding rod body 205 and the first return spring 209. As long as it is a component that can make the U-shaped frame 202 have downward pressure and can make the U-shaped frame 202 slide up and down, it can be applied to this embodiment.

[0043] like Figure 2 and 4As shown, in order to be able to adjust the exhaust pressure of the exhaust valve, in this embodiment, first sliding grooves 103 are provided on both sides of the inner wall of the exhaust valve body 100, and external thread grooves 206 are provided on the outer walls of the sliding rod bodies 205 on both sides near the upper ends. The outer walls of the external thread grooves 206 on both sides are threadedly connected with threaded rings 210, and the threaded rings 210 on both sides are slidably connected to the inside of the first sliding grooves 103 on both sides. The upper ends of the sliding rod bodies 205 on both sides pass through the sealing valve cover 300 and are detachably connected with hexagonal heads 208. In this embodiment, the sliding rod bodies 205 on both sides are rotated by rotating the hexagonal heads 208 on both sides, so that the threaded rings 210 on both sides can move downward to compress the first return spring 209, thereby increasing the pressure of the sealing ball 203 moving upward, and then achieving the effect of adjusting the exhaust pressure of the exhaust valve opening.

[0044] It is worth noting that the above-mentioned hexagonal head 208, external thread groove 206, threaded ring 210 and first sliding groove 103 are the opening pressure adjustment components in this embodiment, and the opening pressure adjustment components include but are not limited to the hexagonal head 208, external thread groove 206, threaded ring 210 and first sliding groove 103. As long as it is a component that can adjust the compression degree of the first return spring 209, it can be applied to this embodiment.

[0045] like Figure 4 as well as Figure 5 As shown, it is a schematic diagram of the U-shaped frame structure and the sealing valve cover structure in this embodiment, a first sprocket 207 is fixedly connected between the sliding rod bodies 205 and the hexagonal heads 208 on both sides, the first sprockets 207 on both sides are located above the sealing valve cover 300, and the outer walls of the sealing valve cover 300 are rotatably connected with second sprockets 302 on both sides, and the outer walls of the second sprockets 302 and the sliding blocks 307 on both sides are sleeved with drive chains 303. In this embodiment, when adjusting, through the arrangement of the second sprocket 302 and the drive chain 303, rotating the sliding rod body 205 on one side can make the sliding rod body 205 on the other side rotate at the same time, making the adjustment more convenient.

[0046] It is worth noting that the above-mentioned first sprocket 207, second sprocket 302 and drive chain 303 are linkage components in this embodiment, and the linkage components include but are not limited to the first sprocket 207, second sprocket 302 and drive chain 303. As long as it is a component that can make the sliding rod bodies 205 on both sides rotate simultaneously, it can be applied to this embodiment.

[0047] like Figure 6As shown, it is a schematic diagram of the cross-sectional structure of the sealing valve cover in this embodiment. The bottom of the sealing valve cover 300 is fixedly connected with a plug-in flange 304, and the plug-in flange 304 is inserted into the interior of the exhaust valve body 100. In this embodiment, the plug-in flange 304 is inserted into the interior of the exhaust valve body 100 to increase the sealing performance of the sealing valve cover 300 and the exhaust valve body 100 after installation.

[0048] like Figure 7 As shown, it is in this embodiment Figure 6 The enlarged structural schematic diagram at point A in the middle shows that second sliding grooves 305 are provided on both sides of the upper end of the sealing valve cover 300, and sliding blocks 307 are fixedly connected to the bottom of the second sprockets 302 on both sides, and the sliding blocks 307 are slidably connected to the inside of the second sliding grooves 305. The outer walls of the sliding blocks 307 on both sides near the center of the sealing valve cover 300 are fixedly connected to second return springs 306, and a rubber sealing ring 308 is provided at the bottom of the sealing top cover 200. In this embodiment, the elastic force of the second return springs 306 makes the second sprockets 302 on both sides always move outward, so that the driving chain 303 can be kept in a taut state, so that the transmission can be more stable. The provision of the rubber sealing ring 308 can make the sealing performance better after the sealing top cover 200 falls into the upper end of the sealing valve cover 300, making it more difficult for external impurities to enter the interior of the exhaust valve body 100.

[0049] It is worth noting that the above-mentioned second sliding groove 305, second return spring 306 and sliding block 307 are the tensioning components in this embodiment. The tensioning components include but are not limited to the second sliding groove 305, the second return spring 306 and the sliding block 307. As long as it is a component that can keep the sealing valve cover 300 in a taut state, it can be applied to this embodiment.

[0050] The above content is a further detailed description of the present invention in combination with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as belonging to the scope of protection determined by the claims submitted for the present invention.

Claims

1. A water supply pipeline exhaust valve, comprising an exhaust valve body (100), the top of the exhaust valve body (100) being detachably connected to a sealing valve cover (300), the bottom of the exhaust valve body (100) being fixedly connected to a funnel head (101), the outer edge of the bottom of the funnel head (101) being fixedly connected to a connecting flange (102), and an air inlet (104) being arranged at the inner bottom of the exhaust valve body (100), It is characterized in that A sealing top cover (200) is inserted at the center of the sealing valve cover (300), a connecting rod (201) is fixedly connected to the bottom of the sealing top cover (200), a U-shaped frame (202) with an opening facing downward is fixedly connected to the bottom of the connecting rod (201), connecting rods (204) are fixedly connected to the two sides of the interior of the U-shaped frame (202), a sealing ball (203) is detachably connected between the connecting rods (204) on both sides, and a moving component is installed inside the exhaust valve body (100), and the moving component enables the sealing top cover (200) to have a downward pressing force.

2. The water supply pipe exhaust valve according to claim 1, It is characterized in that First sliding grooves (103) are provided on both sides of the inner wall of the exhaust valve body (100), and opening pressure adjustment components are installed inside the first sliding grooves (103) on both sides. The pressure adjustment components are connected to the outer wall of the sliding rod body (205).

3. The water supply pipe exhaust valve according to claim 4, It is characterized in that A rubber sealing ring (308) is provided at the bottom of the sealing top cover (200), and the sealing valve cover (300) and the exhaust valve body (100) are fixed by a plurality of fastening bolts (301).

4. The water supply pipe exhaust valve according to claim 3, It is characterized in that A plug-in flange (304) is fixedly connected to the bottom of the sealing valve cover (300), and the plug-in flange (304) is inserted into the interior of the exhaust valve body (100).

5. The water supply pipe exhaust valve according to claim 4, It is characterized in that The moving assembly comprises a sliding rod body (205) and a first return spring (209), and the first return spring (209) is arranged on the outer wall of the sliding rod body (205) between the U-shaped frames (202) on both sides and the sealing valve cover (300).

6. The water supply pipe exhaust valve according to claim 5, It is characterized in that The opening pressure regulating assembly comprises a hexagonal head (208), an external thread groove (206), a threaded collar (210) and a first sliding groove (103); the outer walls of the sliding rod bodies (205) on both sides are provided with external thread grooves (206) near the upper ends; the outer walls of the external thread grooves (206) on both sides are threadedly connected with threaded collars (210); the threaded collars (210) on both sides are slidably connected with the inside of the first sliding grooves (103) on both sides; the upper ends of the sliding rod bodies (205) on both sides pass through the sealing valve cover (300) and are detachably connected with the hexagonal head (208); the upper ends of the sealing valve cover (300) are installed with a linkage assembly, and the linkage assembly enables the sliding rod bodies (205) on both sides to rotate simultaneously.

7. The water supply pipe exhaust valve according to claim 6, It is characterized in that The linkage assembly comprises a first sprocket (207), a second sprocket (302) and a driving chain (303); the first sprocket (207) is fixedly connected between the sliding rod bodies (205) and the hexagonal heads (208) on both sides; the first sprockets (207) on both sides are located above the sealing valve cover (300); the second sprockets (302) are rotatably connected to the outer walls of the sealing valve cover (300); the second sprockets (302) on both sides and the outer walls of the sliding blocks (307) on both sides are sleeved with the driving chain (303); a tensioning assembly is installed on the sealing valve cover (300); the tensioning assembly keeps the driving chain (303) in a taut state.

8. The water supply pipe exhaust valve according to claim 7, It is characterized in that The tensioning assembly comprises a second sliding groove (305), a second return spring (306) and a sliding block (307); the second sliding grooves (305) are arranged on both sides of the upper end of the sealing valve cover (300); the bottoms of the second sprockets (302) on both sides are fixedly connected with sliding blocks (307); the sliding blocks (307) are slidably connected to the inside of the second sliding groove (305); the outer walls of the sliding blocks (307) on both sides near the center of the sealing valve cover (300) are fixedly connected with the second return spring (306); and a rubber sealing ring (308) is arranged at the bottom of the sealing top cover (200).

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