Waterproof hammer check valve

Abstract

The utility model relates to the technical field of check valves, in particular to a water hammer preventing check valve which comprises a check valve body, a valve element is fixedly installed in the check valve body, an overflowing channel is formed in the check valve body, one end of the valve element is fixedly connected with one end of an installation rod, and the other end of the installation rod is fixedly connected with the other end of the installation rod. The end, away from the valve element, of the mounting rod is fixedly connected with one end of a threaded rod, the mounting rod and the threaded rod are both used for allowing a mounting head to be mounted and inserted, a threaded hole is formed in the center of the mounting head and matched with the threaded rod, the threaded rod is further used for allowing a nut to be mounted in a sleeving mode, and a mounting plate is fixedly connected to the outer side of the mounting head. And a reinforcing plate is fixedly connected to the same side of the mounting head and the mounting plate. And through cooperation of the threaded rod and the mounting rod, the mounting head can be conveniently mounted and dismounted, so that structures such as a sealing disc are maintained or replaced when the check valve main body is used for a long time, and the bending resistance of the mounting plate can be improved through arrangement of a reinforcing plate.

Description

Technical Field

[0001] This utility model relates to the field of check valve technology, specifically to a check valve for preventing water hammer. Background Technology

[0002] A check valve is a type of valve that controls the unidirectional flow of a medium and prevents backflow. It is used in pipeline systems. There are many types of check valves, each used in different situations, and they are easy to use.

[0003] Application No. CN202121391324.4 discloses a silent waterproof hammer check valve. The check valve body includes a valve body with an internal flow channel. A valve core is installed inside the valve body, and a base is installed inside the valve core. A drive rod is installed at one end of the base, and one end of the drive rod is embedded inside the base. The base and the drive rod are slidably connected. A spring is installed between the drive rod and the base. A drive arm is installed at one end of the drive rod, and a sealing disc is installed at one end of the drive arm. The spring, base, and drive rod are all connected by screws. A sealing sleeve is installed between the drive rod and the valve core, and the sealing sleeve is slidably connected to the drive rod and fixedly connected to the valve core. A sealing ring is provided on the outside of the sealing disc, and the sealing disc and the sealing ring are bonded together.

[0004] However, the sealing disc of this check valve is connected by the drive arm. After long-term use, the drive arm may be bent by the water flow, which will cause the sealing disc to fail to block the flow passage. Furthermore, the drive arm and sealing disc of this check valve are inconvenient to disassemble, making it impossible to maintain and replace them. Therefore, a water hammer check valve is proposed. Utility Model Content

[0005] To address the problems in the existing technology, this utility model provides a water hammer check valve.

[0006] The technical solution adopted by this utility model to solve its technical problem is a water hammer check valve, including a check valve body, a valve core fixedly installed inside the check valve body, a flow passage provided inside the check valve body, one end of the valve core being fixedly connected to one end of an installation rod, and the end of the installation rod away from the valve core being fixedly connected to one end of a threaded rod. Both the installation rod and the threaded rod are used for inserting an installation head. A threaded hole is opened at the center of the installation head, and the threaded hole is adapted to the threaded rod. The threaded rod is also used for nut sleeve installation.

[0007] A mounting plate is fixedly connected to the outer side of the mounting head, and the mounting plate has four supports. A reinforcing plate is fixedly connected to the same side of the mounting head and the mounting plate, and the reinforcing plate has four supports.

[0008] By adopting the above technical solution, the installation head can be easily installed and disassembled through the cooperation of the threaded rod and the mounting rod, so that the sealing disc and other structures can be maintained or replaced during long-term use of the check valve body. The setting of the reinforcing plate can increase the bending resistance of the mounting plate.

[0009] Specifically, the mounting plate has a first cavity and a second cavity on the side away from the reinforcing plate. There are two first cavities, which are used for inserting one end of the guide rod and the second cavity is used for inserting one end of the connecting rod.

[0010] Specifically, one side of the second cavity is fixedly connected to one end of the spring, and the other end of the spring is fixedly connected to one end of the connecting rod.

[0011] By adopting the above technical solution, when the sealing disc is pushed horizontally by the water flow, the guide rod will retract into the first cavity, the connecting rod will retract into the second cavity, and the connecting rod will compress the spring.

[0012] Specifically, the end of the guide rod away from the mounting plate and the end of the connecting rod away from the mounting plate are both fixedly connected to one side of the sealing disc, and the side of the sealing disc away from the connecting rod is sealed and installed at one end of the flow channel.

[0013] By adopting the above technical solution, when the sealing disc lacks the push of water flow, it will be springed back to its original position, thereby blocking the flow passage. At this time, the main body of the check valve is closed, and the water flow is intercepted.

[0014] Specifically, one end of the valve core is fixedly connected to a positioning rod, and multiple positioning rods are provided. The mounting head has a positioning hole on the side near the valve core, and multiple positioning holes are provided for the positioning rods to be installed and inserted.

[0015] By adopting the above technical solution, when the installation head is on the outside of the installation rod, the installation head can be manually rotated to align the positioning hole with the positioning rod and insert it, so that each sealing disc can be aligned with each flow channel. The positioning rod and positioning hole enable the sealing disc to achieve the function of positioning and installation.

[0016] Specifically, one end of the check valve body has an inlet, and the other end of the check valve body has an outlet.

[0017] By adopting the above technical solution, the water inlet allows water to enter the body of the check valve, and the outlet allows water to be discharged from the body of the check valve.

[0018] The beneficial effects of this utility model are:

[0019] (1) The waterproof hammer check valve described in this utility model allows for easy installation and disassembly of the mounting head through the cooperation of the threaded rod and the mounting rod, thereby enabling maintenance or replacement of the sealing disc and other structures during long-term use of the check valve body.

[0020] (2) The waterproof hammer check valve described in this utility model can increase the bending resistance of the mounting plate by setting the reinforcing plate, and the positioning rod and positioning hole can facilitate the positioning and installation of the sealing plate, so that the sealing plate can accurately position each flow channel. Attached Figure Description

[0021] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0022] Figure 1 This is a schematic diagram of the planar structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the reinforcing plate structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the mounting head structure of this utility model;

[0025] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0026] In the diagram: 1. Check valve body; 2. Flow passage; 3. Inlet; 4. Sealing plate; 5. Reinforcing plate; 6. Mounting plate; 7. Mounting head; 8. Threaded rod; 9. Nut; 10. Outlet; 11. Valve core; 12. First cavity; 13. Second cavity; 14. Spring; 15. Threaded hole; 16. Positioning hole; 17. Mounting rod; 18. Positioning rod; 19. Connecting rod; 20. Guide rod. Detailed Implementation

[0027] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0028] As one embodiment of this utility model, such as Figures 1-4As shown, the present invention discloses a water hammer check valve, comprising a check valve body 1, a valve core 11 fixedly installed inside the check valve body 1, a flow passage 2 provided inside the check valve body 1, one end of the valve core 11 being fixedly connected to one end of an mounting rod 17, and the end of the mounting rod 17 away from the valve core 11 being fixedly connected to one end of a threaded rod 8. Both the mounting rod 17 and the threaded rod 8 are used for the installation and insertion of a mounting head 7. A threaded hole 15 is provided at the center of the mounting head 7, the threaded hole 15 being adapted to the threaded rod 8, and the threaded rod 8 is also used for the installation of a nut 9.

[0029] An mounting plate 6 is fixedly connected to the outer side of the mounting head 7. The mounting plate 6 has four supports. A reinforcing plate 5 is fixedly connected to the same side of the mounting head 7 and the mounting plate 6. The reinforcing plate 5 has four supports.

[0030] When in use, align the threaded hole 15 with the threaded rod 8 and screw it in until the threaded hole 15 disengages from the threaded rod 8 and is screwed into the outside of the mounting rod 17. Finally, screw the nut 9 onto the threaded rod 8 to restrict the mounting head 7. The reinforcing plate 5 can enhance the bending resistance of the mounting plate 6.

[0031] The present invention also includes a first cavity 12 and a second cavity 13 on the side of the mounting plate 6 away from the reinforcing plate 5. The first cavity 12 has two locations, which are used for the installation and insertion of one end of the guide rod 20, and the second cavity 13 is used for the installation and insertion of one end of the connecting rod 19.

[0032] The present invention further includes that one side of the inner side of the second cavity 13 is fixedly connected to one end of the spring 14, and the other end of the spring 14 is fixedly connected to one end of the connecting rod 19.

[0033] When in use, when the sealing disc 4 is pushed horizontally by the water flow, the guide rod 20 will retract into the first cavity 12, the connecting rod 19 will retract into the second cavity 13, and at the same time the connecting rod 19 will compress the spring 14.

[0034] This utility model also includes that the end of the guide rod 20 away from the mounting plate 6 and the end of the connecting rod 19 away from the mounting plate 6 are both fixedly connected to one side of the sealing disc 4, and the side of the sealing disc 4 away from the connecting rod 19 is sealed and installed at one end of the flow channel 2.

[0035] When in use, if the sealing disc 4 lacks the push of water flow, it will be bounced back to its original position by the spring 14, thereby blocking the flow passage 2. At this time, the check valve body 1 is closed, and the water flow is intercepted.

[0036] It should be noted that the guide rod 20 is designed to guide the sealing disc 4 and prevent it from becoming misaligned.

[0037] This utility model also includes a positioning rod 18 fixedly connected to one end of the valve core 11. The positioning rod 18 is provided in multiple locations. The mounting head 7 is provided with a positioning hole 16 on the side near the valve core 11. The positioning hole 16 is provided in multiple locations for the positioning rod 18 to be installed and inserted.

[0038] When in use, when the mounting head 7 is fitted on the outside of the mounting rod 17, the mounting head 7 can be manually rotated to align the positioning hole 16 with the positioning rod 18 and insert it, so that each sealing disc 4 can be aligned with each flow channel 2. The positioning rod 18 and the positioning hole 16 enable the sealing disc 4 to achieve the function of positioning and installation.

[0039] This utility model also includes a water inlet 3 at one end of the check valve body 1 and a water outlet 10 at the other end of the check valve body 1.

[0040] In use, the water inlet 3 allows water to enter the body of the check valve 1, and the water outlet 10 allows water to be discharged from the body of the check valve 1.

[0041] When this utility model is in use, the external pump body of the check valve body 1 is working. The pump body introduces water flow into the interior of the check valve body 1 from the inlet 3. The water flow passes through the flow passage 2 and gives a horizontal thrust to the sealing plate 4. The sealing plate 4 is pushed by the water flow and separates from the flow passage 2. At the same time, it squeezes the spring 14. At this time, the flow passage 2 is in the open state, and the water flow can pass normally through the interior of the check valve body 1 and finally be discharged from the outlet 10. When the external pump body stops working, the sealing plate 4 lacks the push of the water flow and will be bounced back to its original position by the spring 14, thereby blocking the flow passage 2. At this time, the check valve body 1 is closed, and the water flow is intercepted. The setting of the reinforcing plate 5 can enhance the anti-bending resistance of the mounting plate 6. At the same time, the nut 9 can be unscrewed to pull the mounting head 7 out of the mounting rod 17, so that the positioning rod 18 is separated from the positioning hole 16. With the cooperation of the threaded hole 15 and the threaded rod 8, the mounting head 7 and the mounting plate 6 can be disassembled for easy maintenance and replacement.

[0042] When it is necessary to install the mounting head 7 and the mounting plate 6, simply align the threaded hole 15 with the threaded rod 8 and screw it in until the threaded hole 15 disengages from the threaded rod 8 and is screwed into the outside of the mounting rod 17. Manually rotate the mounting head 7 to align the positioning hole 16 with the positioning rod 18 and insert it, so that each sealing disc 4 can be aligned with each flow channel 2. Finally, screw the nut 9 onto the threaded rod 8 to restrict the mounting head 7.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The descriptions of the above embodiments and specifications are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by this utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A water hammer check valve, comprising a check valve body (1), characterized in that, A valve core (11) is fixedly installed inside the body (1) of the check valve. An overflow channel (2) is provided inside the body (1). One end of the valve core (11) is fixedly connected to one end of the mounting rod (17). The end of the mounting rod (17) away from the valve core (11) is fixedly connected to one end of the threaded rod (8). The mounting rod (17) and the threaded rod (8) are both used for the installation head (7) to be inserted. A threaded hole (15) is provided at the center of the mounting head (7). The threaded hole (15) is adapted to the threaded rod (8). The threaded rod (8) is also used for the nut (9) to be sleeved and installed. An mounting plate (6) is fixedly connected to the outside of the mounting head (7). The mounting plate (6) has four supports. A reinforcing plate (5) is fixedly connected to the same side of the mounting head (7) and the mounting plate (6). The reinforcing plate (5) has four supports.

2. The water hammer check valve according to claim 1, characterized in that, The mounting plate (6) has a first cavity (12) and a second cavity (13) on the side away from the reinforcing plate (5). The first cavity (12) has two locations. The first cavity (12) is used for the installation and insertion of one end of the guide rod (20), and the second cavity (13) is used for the installation and insertion of one end of the connecting rod (19).

3. A water hammer check valve according to claim 2, characterized in that, One side of the second cavity (13) is fixedly connected to one end of the spring (14), and the other end of the spring (14) is fixedly connected to one end of the connecting rod (19).

4. A water hammer check valve according to claim 2, characterized in that, The end of the guide rod (20) away from the mounting plate (6) and the end of the connecting rod (19) away from the mounting plate (6) are both fixedly connected to one side of the sealing disc (4). The side of the sealing disc (4) away from the connecting rod (19) is sealed and installed at one end of the flow channel (2).

5. A water hammer check valve according to claim 1, characterized in that, One end of the valve core (11) is fixedly connected to a positioning rod (18), and there are multiple positioning rods (18). The mounting head (7) has a positioning hole (16) on the side near the valve core (11). There are multiple positioning holes (16), and the multiple positioning holes (16) are used for the installation and insertion of the positioning rod (18).

6. A water hammer check valve according to claim 1, characterized in that, The check valve body (1) has an inlet (3) at one end and an outlet (10) at the other end.

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