Check valve core of submersible pump

Abstract

The check valve element comprises a water plugging mechanism, a loading and unloading mechanism and a reinforcing mechanism, the water plugging mechanism comprises a water outlet pipe, a bucket-shaped shell installed in the water outlet pipe and two semicircular sealing plugs connected with the bucket-shaped shell in an inserted mode, and the two semicircular sealing plugs are symmetrically arranged and attached to each other; the loading and unloading mechanism comprises plate bodies connected with the semicircular sealing plugs, a sealing gasket connected between the two plate bodies, a plurality of plate sleeves connected with the sealing gasket, and inserting plates connected between every two adjacent plate sleeves in a sliding mode. When the semicircular sealing plug is detached and replaced, the nut is unscrewed, then the spring and the plate body are taken down in sequence, then the plate body is folded, the plate body and the semicircular sealing plug can be taken out of the water outlet pipe, then the semicircular sealing plug is detached and replaced, then the steps are repeated from bottom to top, replacement operation can be completed, the structure is simple, and detachment and replacement are convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of check valve cores, in particular to a check valve core for a submersible pump. Background Technique

[0002] A submersible pump is an important device for pumping water from deep wells. When in use, the whole unit works underwater, extracting groundwater to the ground surface, and is used for domestic water, mine rescue, industrial cooling, farmland irrigation, seawater lifting, ship ballasting, and can also be used for fountain landscapes.

[0003] The patent application number CN220910551U discloses a check valve core for a submersible pump, which relates to the technical field of submersible pumps and includes structures such as a submersible pump body. This check valve core for a submersible pump, through the setting of a fixed core and a movable core, when the submersible pump body stops, the movable core is pulled by a spring to block inside the fixed core. When water flows back from the outlet pipe, the water pressure will push the movable core so that the semi-sphere blocks the through groove, and at the same time makes the inclined plane closely fit inside the inclined groove to prevent water flow, thereby preventing high-pressure water flow from flowing back into the submersible pump body and causing damage to the pump impeller, thus improving the service life of the equipment. When this application is specifically used, there are certain problems, such as: the longer the movable core is used, the more severely it is worn by water and sand in the water, and the installation structure of the movable core is relatively complex, which makes the disassembly and replacement operations inconvenient. Content of the Utility Model

[0004] The utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] For this reason, the technical solution adopted by the utility model is as follows:

[0006] A check valve core for a submersible pump, comprising a water blocking mechanism, a loading and unloading mechanism, and a reinforcement mechanism. The water blocking mechanism includes an outlet pipe, a funnel-shaped shell installed inside the outlet pipe, and two semi-circular sealing plugs inserted into the funnel-shaped shell. The two semi-circular sealing plugs are symmetrically arranged and fit together. The loading and unloading mechanism includes a plate body connected to the semi-circular sealing plug, a sealing gasket connected between the two plate bodies, a plurality of plate sleeves connected to the sealing gasket, and an insertion plate slidably connected between adjacent two plate sleeves. The reinforcement mechanism includes two threaded rods connected to the funnel-shaped shell, a spring movably sleeved outside the threaded rods, and a nut threadedly connected to the threaded rods. The two threaded rods respectively slide through the two plate bodies, and the spring is located between the plate body and the nut.

[0007] By adopting the above technical solution, when replacing the semi-circular sealing plug, loosen the nut, then remove the spring and the plate body in sequence, then fold the plate body in half, and the plate body and the semi-circular sealing plug can be taken out of the water outlet pipe. Then replace the semi-circular sealing plug, and then repeat the above steps from bottom to top to complete the replacement operation. The structure is simple and the replacement is convenient.

[0008] In a preferred embodiment of the present utility model, it can be further configured that: the outer edge arc surface of the semi-circular sealing plug is provided.

[0009] In a preferred embodiment of the present utility model, it can be further configured that: the two plate bodies are symmetrically arranged and are in mutual contact, and the top and bottom of the plate body are both set as planes.

[0010] In a preferred embodiment of the present utility model, it can be further configured that: multiple plate sleeves are grouped in pairs and are set into two groups, and the two groups of plate sleeves are horizontally symmetric about the horizontal center plane of the gasket.

[0011] In a preferred embodiment of the present utility model, it can be further configured that: the insertion plate is set in an L shape, and both the plate sleeve and the insertion plate are made of stainless steel materials.

[0012] In a preferred embodiment of the present utility model, it can be further configured that: the diameter of the spring is smaller than the diameter of the nut.

[0013] In a preferred embodiment of the present utility model, it can be further configured that: a flange is sleeved outside the water outlet pipe.

[0014] By adopting the above technical solution, the beneficial effects obtained by the present utility model are:

[0015] 1. In the present utility model, when replacing the semi-circular sealing plug, loosen the nut, then remove the spring and the plate body in sequence, then fold the plate body in half, and the plate body and the semi-circular sealing plug can be taken out of the water outlet pipe. Then replace the semi-circular sealing plug, and then repeat the above steps from bottom to top to complete the replacement operation. The structure is simple and the replacement is convenient.

[0016] 2. In the present utility model, the water outlet pipe is connected to the water outlet end of the external submersible pump through the flange. Then, once the water in the water outlet pipe returns, the water pressure will push the gasket, and then the semi-circular sealing plug connected to the plate body will block the bucket-shaped shell, preventing the high-pressure water flow from flowing back into the submersible pump and preventing the pump impeller from being damaged, ensuring the service life of the submersible pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional view of the overall structure of the present utility model;

[0018] Figure 2 is a schematic diagram of the internal structure of the water outlet pipe of the present utility model;

[0019] Figure 3 Schematic diagram of the water blocking mechanism of the present utility model;

[0020] Figure 4 Schematic diagram of the loading and unloading mechanism of the present utility model;

[0021] Figure 5 Schematic diagram of the loading and unloading mechanism when two plate bodies of the present utility model are bent;

[0022] Figure 6 Schematic diagram of the reinforcement mechanism of the present utility model.

[0023] Reference numerals:

[0024] 100, water blocking mechanism; 110, water outlet pipe; 120, funnel-shaped shell; 130, semi-circular sealing plug;

[0025] 200, loading and unloading mechanism; 210, plate body; 220, sealing gasket; 230, plate sleeve; 240, insertion plate;

[0026] 300, reinforcement mechanism; 310, threaded rod; 320, spring; 330, nut;

[0027] 400, flange. Detailed implementation manners

[0028] To make the purpose, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in combination with the specific implementation manners and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present utility model and the features in the embodiments can be combined with each other.

[0029] It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present utility model.

[0030] The following describes a check valve core of a submersible pump provided by some embodiments of the present utility model in combination with the accompanying drawings. Embodiment 1

[0031] Combined with Figure 1-6 As shown in the figure, a check valve core of a submersible pump provided by the present utility model includes a water blocking mechanism 100, a loading and unloading mechanism 200 and a reinforcement mechanism 300. The water blocking mechanism 100 includes a water outlet pipe 110, a funnel-shaped shell 120 installed inside the water outlet pipe 110, and two semi-circular sealing plugs 130 inserted into the funnel-shaped shell 120. The two semi-circular sealing plugs 130 are symmetrically arranged and fit together;

[0032] Loading and unloading mechanism 200, the loading and unloading mechanism 200 includes a plate body 210 connected to the semi-circular sealing plug 130, a gasket 220 connected between two plate bodies 210, a plurality of plate sleeves 230 connected to the gasket 220, and a plug board 240 slidably connected between two adjacent plate sleeves 230;

[0033] Reinforcement mechanism 300, the reinforcement mechanism 300 includes two threaded rods 310 connected to the hopper-shaped shell 120, a spring 320 movably sleeved outside the threaded rods 310, and a nut 330 threadedly connected to the threaded rods 310. The two threaded rods 310 respectively slide through the two plate bodies 210, and the spring 320 is located between the plate body 210 and the nut 330.

[0034] Further, the outer edge arc surface of the semi-circular sealing plug 130 is arranged. With this shape design, it is convenient for the semi-circular sealing plug 130 to block the hopper-shaped shell 120.

[0035] Further, the two plate bodies 210 are symmetrically arranged and fit together. The top and bottom of the plate body 210 are both set as planes. With this layout design, the two semi-circular sealing plugs 130 can be firmly fitted together.

[0036] Further, the plurality of plate sleeves 230 are grouped in pairs and set into two groups. The two groups of plate sleeves 230 are horizontally symmetric about the horizontal center plane of the gasket 220. With this layout design, conditions are provided for firmly fixing the two plate bodies 210 that fit together.

[0037] Further, the plug board 240 is set in an L shape. The plate sleeves 230 and the plug board 240 are both made of stainless steel material. The shape design of the plug board 240 makes it convenient for the staff to pull and draw. Embodiment Two

[0038] Combined with Figure 2-3 As shown, on the basis of Embodiment One, the diameter of the spring 320 is smaller than the diameter of the nut 330. With this size design, after the spring 320 is squeezed by the nut 330, it can firmly press the plate body 210. Embodiment Three

[0039] Combined with Figure 3-4 As shown, in the above embodiment, a flange 400 is sleeved outside the water outlet pipe 110. The setting of the flange 400 facilitates the connection between the water outlet pipe 110 and the water outlet end of an external submersible pump.

[0040] Working principle and usage process of the present utility model: When this device is put into actual use, the water outlet pipe 110 is connected to the water outlet end of an external submersible pump through the flange 400. Then, once water backflows in the water outlet pipe 110, the water pressure will push the gasket 220, and then the semi-circular plug 130 connected to the plate body 210 will block the hopper-shaped shell 120, preventing high-pressure water flow from flowing back into the submersible pump, preventing the pump impeller from being damaged, ensuring the service life of the submersible pump. Then, when replacing the semi-circular plug 130, loosen the nut 330, and then remove the spring 320 and the plate body 210 in sequence. Then, fold the plate body 210 in half, and the plate body 210 and the semi-circular plug 130 can be taken out of the water outlet pipe 110. Then, replace the semi-circular plug 130, and repeat the above steps from bottom to top to complete the replacement operation. The structure is simple and the replacement is convenient.

[0041] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.

Claims

1. A submersible pump check valve core, characterized in that: include: A water blocking mechanism (100), the water blocking mechanism (100) comprising a water outlet pipe (110), a bucket-shaped shell (120) installed inside the water outlet pipe (110), and two semicircular sealing plugs (130) plugged into the bucket-shaped shell (120), the two semicircular sealing plugs (130) being symmetrically arranged and fitting each other; A loading and unloading mechanism (200), the loading and unloading mechanism (200) comprising a plate body (210) connected to the semicircular sealing plug (130), a sealing gasket (220) connected between two plate bodies (210), a plurality of plate sleeves (230) connected to the sealing gaskets (220), and a plug plate (240) slidably connected between two adjacent plate sleeves (230); A reinforcement mechanism (300), the reinforcement mechanism (300) comprising two threaded rods (310) connected to the bucket-shaped shell (120), a spring (320) movably sleeved on the outside of the threaded rods (310), and a nut (330) threadedly connected to the threaded rods (310), the two threaded rods (310) respectively slidingly passing through the two plate bodies (210), and the spring (320) being located between the plate bodies (210) and the nut (330).

2. A submersible pump check valve core according to claim 1, characterized in that: The outer edge of the semicircular sealing plug (130) is arranged in an arc surface.

3. A submersible pump check valve core according to claim 1, characterized in that: The two plates (210) are symmetrically arranged and fit each other, and the top and bottom of the plate (210) are both arranged to be flat.

4. A submersible pump check valve core according to claim 1, characterized in that: The plurality of plate sleeves (230) are arranged in groups of two, and are arranged in two groups. The two groups of plate sleeves (230) are laterally symmetrical about a horizontal center plane of the sealing gasket (220).

5. A submersible pump check valve core according to claim 1, characterized in that: The inserting plate (240) is configured to be L-shaped, and the plate sleeve (230) and the inserting plate (240) are both made of stainless steel.

6. A submersible pump check valve core according to claim 1, characterized in that: The diameter of the spring (320) is smaller than the diameter of the nut (330).

7. A submersible pump check valve core according to claim 1, characterized in that: A flange plate (400) is sleeved on the outer side of the water outlet pipe (110).

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