Check valve for water supply system

Abstract

The utility model relates to the technical field of check valves, in particular to a check valve for a water supply system, which comprises a water pipe, a connecting cover and a partition plate, the connecting cover is mounted on the outer wall of one side of the water pipe in an inserted manner, an access hole is formed in the outer wall of one side of the connecting cover, and bag type sealing gaskets are fixedly attached to two sides of the inner wall of the connecting cover. A partition plate is arranged between the two bag type sealing gaskets, and a connecting block is installed on one side of the outer wall of the lower end of the partition plate, so that a worker can maintain and clean the filter screen conveniently, the filter screen can be maintained while liquid keeps flowing, the use smoothness of equipment is guaranteed, the conveying smoothness of the liquid in a pipeline is prevented from being affected, and the service life of the equipment is prolonged. The water supply efficiency of the water supply system is influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to check valve technical field, concretely relates to a check valve for water supply system. BACKGROUND

[0002] The water supply system is a system that converts natural water sources or other water resources into a water supply network to meet various water demands of people's life, production, agriculture and the like, and the check valve for water supply system is an automatic valve mainly used for preventing medium backflow, avoiding pump and driving motor reverse rotation and container medium discharge, and the check valve has a hinge mechanism and a valve clack like a door freely leaning on the inclined valve seat surface, in order to ensure that the valve clack can reach the appropriate position of the valve seat surface each time, the valve clack is designed in the hinge mechanism, so that the valve clack has sufficient swing space and is truly and comprehensively in contact with the valve seat, thereby realizing the check ability of the pipeline interior.

[0003] The utility model discloses a check valve for water supply equipment, and concretely relates to the technical field of check valve, the utility model discloses a pipe body is provided with the valve in the inside, one side of pipe body is provided with flange plate, one side of pipe body is provided with filter device, one side of pipe body is provided with auxiliary device, filter device includes rectangle block and filter screen, rectangle block is fixedly connected with pipe body, one side of rectangle block is provided with rectangle hole, the utility model discloses a filter device is arranged, so that the filter screen is sleeved on the surface of the screw rod through the first circular hole, and then the filter screen surface is fixed in position by being pressed by the screw hole ring, so that personnel can move the circular groove plate to drive the filter screen to be inserted into the pipe body through the rectangle hole and be quickly installed, and the filter screen can be quickly separated from the pipe body when the filter screen is blocked and needs to be replaced, the situation that impurities are accumulated in the pipe body and affect the closing of the valve is reduced, and the convenience of replacing the filter screen in the pipe body is improved.

[0004] The check valve in the prior art has many benefits in use, but still has the following problems, that is, the disassembly of the filter screen is not perfect, so that the disassembly and replacement of the filter screen can only be carried out when the pipeline is in a maintenance state, which affects the smoothness of the delivery of the liquid in the pipeline and the water supply efficiency of the water supply system. UTILITY MODEL CONTENTS

[0005] In view of the problems in the prior art, the utility model provides a check valve for water supply system.

[0006] The utility model discloses a technical scheme that solves its technical problem adopts for water supply system check valve, including water pipe, connecting cover and partition, connecting cover is inserted and is installed to the water pipe one side outer wall, the connecting cover one side outer wall is seted up to have the overhaul opening, the connecting cover inner wall both sides all are fixed with the bladder type sealing washer, set up between two bladder type sealing washers and have the partition, the partition lower extreme outer wall one side is installed with the connecting block.

[0007] Through adopting above-mentioned technical scheme, the staff can maintain and clean the filter screen in the connecting cover through the overhaul opening, and the bladder type sealing washer extrudes the partition, keeps the sealing property between the bladder type sealing washer and the partition, guarantees the flow track of liquid inside the partition.

[0008] Specifically, the outer wall of the upper end of the water pipe is provided with a valve body, and the outer walls of the two sides of the water pipe are both provided with flanges.

[0009] Through the above technical scheme, the valve plate arranged in the valve body is driven to rotate by the liquid flowing in the water pipe, so that the liquid can flow in the water pipe, and after the flow of the liquid stops, the valve plate can be reset by self-weight rotation, can shield the inside of the water pipe, can guarantee the check ability of the inside of the water pipe, and the water pipe can be connected with the external water conveying pipe through the flanges.

[0010] Specifically, the outer wall of one side of the connecting cover is provided with an overhaul cover plate, the inside of the overhaul cover plate is provided with a rectangular array distribution bolt, and the overhaul cover plate is connected with the connecting cover through the bolt, and the position of the overhaul cover plate corresponds to the overhaul opening.

[0011] Through the above technical scheme, the setting of the overhaul cover plate makes the user can conveniently open and close the overhaul opening, so as to maintain and clean the filter screen, and the bolt of rectangular array distribution ensures the firm connection between the overhaul cover plate and the connecting cover, guarantees the stability and sealing property of the shielding of the overhaul cover plate to the overhaul opening.

[0012] Specifically, the inside of the bladder type sealing washer is provided with a water hole, and the connecting cover is connected with the inside of the water pipe through the water hole.

[0013] Through the above technical scheme, the water hole in the bladder type sealing washer makes the connecting cover and the inside of the water pipe can be connected, and the smoothness of the water flow is ensured.

[0014] Specifically, the outer wall of one side of the upper end of the bladder type sealing washer is inserted and installed with an air pipe, one end of the air pipe is inserted and installed with a quick connector through the outer wall of the connecting cover, and the quick connector is located on the upper end of the connecting cover.

[0015] By adopting the technical scheme, the gas conveying pipe matched with the external air pump can be connected with the quick connector, so that the air pump can convey gas into the bladder type sealing gasket through the gas conveying pipe, the extrusion force of the bladder type sealing gasket on the partition plate can be ensured by controlling the air pressure in the bladder type sealing gasket, and the sealing property between the bladder type sealing gasket and the partition plate can be ensured.

[0016] Specifically, the water passing hole is arranged in the partition plate, and the inner wall of the water passing hole is designed in an inclined shape, and the inner wall of the water passing hole is provided with a filter screen.

[0017] By adopting the technical scheme, the filter screen can filter out impurities and particles in water, protect the cleanliness and safety of the water supply system, avoid pollution of the valve body caused by impurities and particles in water, and avoid scattering of impurities and particles when the partition plate moves.

[0018] Specifically, the screw rod is threadedly connected in the connecting block, the connecting cover is rotatably installed on one side of the screw rod, and the handle is installed through the outer wall of one end of the connecting cover.

[0019] By adopting the technical scheme, the partition plate can move horizontally through the connecting block by rotating the screw rod by the staff, and the movement track of the partition plate is controlled due to the extrusion of the bladder type sealing gasket, and the rotation installation of the screw rod on one side and the handle make the user can conveniently adjust the position of the partition plate or perform maintenance operation, improve the flexibility and usability of the check valve.

[0020] The utility model discloses the beneficial effect has:

[0021] (1) a check valve for water supply system can filter the liquid flowing in the water passing pipe, keep the cleanliness of the liquid, avoid the pollution of the valve body caused by impurities and particles in water, and improve the shielding sealing property of the valve body to the water passing pipe.

[0022] (2) a check valve for water supply system, and the staff can maintain and clean the filter screen, can maintain the filter screen while the liquid keeps flowing, ensure the smoothness of the equipment, avoid affecting the conveying smoothness of the liquid in the pipeline, and affect the water supply efficiency of the water supply system. DRAWINGS

[0023] The utility model is further illustrated below in connection with the drawings and examples.

[0024] Figure 1 It is the connecting cover structure section view schematic drawing of the utility model;

[0025] Figure 2It is the water pipe structure appearance schematic view of the utility model;

[0026] Figure 3 It is the bag type sealing gasket structure enlarged schematic view of the utility model;

[0027] Figure 4 It is the partition plate structure exploded schematic view of the utility model;

[0028] Figure 5 It is the partition plate structure side cross-sectional schematic view of the utility model.

[0029] In the figure: 1, water pipe; 11, valve body; 12, flange; 2, connecting cover; 21, access hole; 22, access cover plate; 23, bag type sealing gasket; 24, air pipe; 25, quick connector; 3, partition plate; 31, water hole; 32, filter screen; 33, connecting block; 34, screw rod. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, purposes and effects realized by the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0031] In order to save manpower and improve efficiency, as an embodiment of the utility model, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 indicated, the check valve for water supply system of the utility model, including water pipe 1, connecting cover 2 and partition plate 3, connecting cover 2 is installed on one side outer wall of water pipe 1, access hole 21 is formed on one side outer wall of connecting cover 2, bag type sealing gasket 23 is fixedly attached to the inner wall of connecting cover 2 on both sides, partition plate 3 is arranged between two bag type sealing gaskets 23, and connecting block 33 is installed on one side outer wall of the lower end of partition plate 3.

[0032] When in use, the staff can maintain and clean the filter screen 32 inside the connecting cover 2 through the access hole 21, and the bag type sealing gasket 23 extrudes the partition plate 3, so that the sealing property between the bag type sealing gasket 23 and the partition plate 3 is maintained, and the flow track of liquid inside the partition plate 3 is guaranteed to be controlled.

[0033] In order to check, as an example, as shown in Figure 2 indicated, the valve body 11 is arranged on the outer wall of the upper end of the water pipe 1, and the flange 12 is installed on the outer wall of both sides of the water pipe 1.

[0034] In use, the valve plate arranged inside the valve body 11 is driven to rotate by the liquid flowing inside the water pipe 1, so that the liquid can flow inside the water pipe 1, and after the water flow stops, the valve plate can be reset by rotation under the weight, the water pipe 1 can be blocked inside, the check ability of the water pipe 1 can be guaranteed, and the water pipe 1 can be connected with the external water conveying pipe through the flange 12.

[0035] For maintenance, as shown in Figure 1 , the connecting cover 2 is provided with a maintenance cover plate 22 on one side of the outer wall, the maintenance cover plate 22 is provided with a rectangular array of bolts inside, and the maintenance cover plate 22 is connected with the connecting cover 2 through the bolts, and the maintenance cover plate 22 corresponds to the maintenance opening 21.

[0036] In use, the maintenance cover plate 22 can be easily opened and closed to maintain and clean the filter screen 32, and the rectangular array of bolts ensures the firm connection between the maintenance cover plate 22 and the connecting cover 2, and the sealing stability and sealing of the maintenance cover plate 22 to the maintenance opening 21.

[0037] For water, as shown in Figure 3 , the connecting cover 2 is connected with the inside of the water pipe 1 through the water hole 31 in the bladder seal 23.

[0038] In use, the water hole 31 in the bladder seal 23 makes the connecting cover 2 and the inside of the water pipe 1 connected, ensuring smooth water flow.

[0039] In order to adjust the expansion range of the bladder seal 23, as shown in Figure 3 , the air pipe 24 is inserted and installed on one side of the outer wall of the upper end of the bladder seal 23, and the quick connector 25 is inserted and installed on one end of the outer wall of the connecting cover 2, and the quick connector 25 is located on the upper end of the connecting cover 2.

[0040] In use, the air conveying pipe matched with the external air pump can be connected with the quick connector 25, so that the air pump can convey gas inside the bladder seal 23 through the air pipe 24, and by controlling the air pressure inside the bladder seal 23, the extrusion force of the bladder seal 23 to the partition plate 3 can be guaranteed, and the sealing between the bladder seal 23 and the partition plate 3 can be guaranteed.

[0041] For liquid filtration, as shown in Figure 4 , the partition plate 3 is provided with a water hole 31, the inner wall of the water hole 31 is designed in an inclined shape, and the filter screen 32 is arranged on one side of the inner wall of the water hole 31.

[0042] In use, the filter screen 32 can filter out impurities and particles in the water, protecting the cleanliness and safety of the water supply system, avoiding contamination of the valve body 11 by impurities and particles in the water, and the accumulated impurities and particles can be retained inside the water passage hole 31, avoiding the scattering of impurities and particles when the partition plate 3 moves.

[0043] In order to adjust the position of the partition plate 3, as shown in the example, Figure 4 The connecting block 33 is internally threaded with a screw rod 34, and the screw rod 34 is rotatably installed on one side of the connecting cover 2. A handle is installed through the outer wall of one end of the connecting cover 2.

[0044] In use, the worker rotates the screw rod 34 by the handle, and the partition plate 3 can move horizontally through the connecting block 33. The movement track of the partition plate 3 is controlled by the extrusion of the bladder seal 23. The rotatable installation of the screw rod 34 on one side and the handle make it convenient for the user to adjust the position of the partition plate 3 or perform maintenance operations, improving the flexibility and ease of use of the check valve.

[0045] In use, the worker connects the water passage pipe 1 to the external water delivery pipe through the flanges 12 on both sides, and connects the gas delivery pipe matched with the external air pump to the quick connector 25 on the upper end of the connecting cover 2. In this way, the air pump can deliver gas to the inside of the bladder seal 23 through the air pipe 24 to control the air pressure inside;

[0046] When liquid flows in the water passage pipe 1, the liquid can drive the valve plate inside the valve body 11 to rotate, so that the liquid can flow smoothly inside the water passage pipe 1. When the water flow stops, the valve plate will rotate back to its original position by gravity, blocking the inside of the water passage pipe 1, realizing the check function and preventing backflow of the liquid. The liquid can be filtered by the filter screen 32 when it flows.

[0047] When the filter screen 32 needs to be repaired or cleaned, the worker first rotates the screw rod 34 by the handle. Since the screw rod 34 is threaded with the connecting block 33 and rotatably installed on one side of the connecting cover 2, the partition plate 3 will move horizontally through the connecting block 33. At the same time, the extrusion of the bladder seal 23 will keep the movement track of the partition plate 3 controlled. The filter screen 32 of the partition plate 3 protrudes from the bladder seal 23 at the position of the access hole 21, and part of the partition plate 3 is located between the bladder seals 23. Since the bladder seal 23 can deform according to the air pressure, the bladder seals 23 can be extruded to each other, blocking and sealing the moving distance of the partition plate 3, ensuring the sealing of the water passage hole 31 and ensuring that the maintenance of the filter screen 32 can be carried out under the condition of liquid flow.

[0048] Finally, the user manually unscrews the bolts inside the access cover 22, and then removes the access cover 22, exposing the access opening 21, through which the filter screen 32 inside the partition plate 3 can be cleaned to remove accumulated impurities and particulate matter, and at the same time, the sealing performance of the bladder gasket 23 and the wear condition of the valve body 11 can be checked.

[0049] It should be noted that the utility model is a check valve for a water supply system, the components in the utility model are components known to those skilled in the art, and the structure and principle thereof can be known by those skilled in the art through a technical manual or through a conventional experimental method.

[0050] The basic principle, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A check valve for a water supply system, characterized by Including water pipe (1), connecting cover (2) and partition plate (3), one side outer wall of water pipe (1) is inserted and connected with connecting cover (2), one side outer wall of connecting cover (2) is provided with access hole (21), both sides of inner wall of connecting cover (2) are fixed with bladder type sealing pad (23), partition plate (3) is arranged between two bladder type sealing pads (23), connecting block (33) is installed on one side outer wall of lower end of partition plate (3).

2. A check valve for a water supply system according to claim 1, characterized in that The outer wall of the upper end of the water pipe (1) is provided with a valve body (11), and the outer wall of both sides of the water pipe (1) is provided with a flange (12).

3. A check valve for a water supply system according to claim 1, wherein The outer wall of the connecting cover (2) is provided with an access cover plate (22), the inside of the access cover plate (22) is provided with a rectangular array of bolts, and the access cover plate (22) is connected with the connecting cover (2) by bolts, the access cover plate (22) corresponds to the position of the access hole (21).

4. The check valve for a water supply system according to claim 1, wherein The inner wall of the bladder type sealing pad (23) is provided with a water hole (31), and the connecting cover (2) is connected with the inner wall of the water pipe (1) through the water hole (31).

5. The check valve for a water supply system according to claim 1, wherein The outer wall of one side of the upper end of the bladder type sealing pad (23) is inserted and connected with the air pipe (24), one end of the air pipe (24) is inserted and connected with the quick connector (25) through the outer wall of the connecting cover (2), and the quick connector (25) is located on the upper end of the connecting cover (2).

6. A check valve for a water supply system according to claim 1, wherein The inner wall of the partition plate (3) is provided with a water hole (31), one side of the inner wall of the water hole (31) is designed in an inclined shape, and the inner wall of the water hole (31) is provided with a filter screen (32).

7. A check valve for a water supply system according to claim 1, wherein The inner wall of the connecting block (33) is provided with a screw rod (34), one side of the screw rod (34) is rotatably connected with the connecting cover (2), and the connecting cover (2) is connected with the handle through the outer wall of one end of the connecting cover (2).

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