CN219221359U

CN219221359U - Non-return valve core for submersible pump

Info

Publication number: CN219221359U
Application number: CN202320318936.3U
Authority: CN
Inventors: 蔡锦杰
Original assignee: TAIZHOU YANGCHUN ELECTRIC MOTOR CO Ltd
Current assignee: TAIZHOU YANGCHUN ELECTRIC MOTOR CO Ltd
Priority date: 2023-02-17
Filing date: 2023-02-17
Publication date: 2023-06-20
Anticipated expiration: 2033-02-17

Abstract

The utility model provides a submerged pump check valve core, and belongs to the technical field of water pumps. It has solved the problem that current case influences immersible pump operation. The check valve core of the submersible pump comprises a valve plate and a circle of valve feet vertically formed at the bottom of the valve plate, wherein a column body vertically arranged is formed at the top of the valve plate, a through hole is formed in the column body, the through hole is vertically arranged, two ends of the through hole respectively extend to the top surface of the column body and the bottom surface of the valve plate, and the aperture of the through hole is 2.75-3.25 mm. The check valve core of the submersible pump can ensure the normal operation of the submersible pump.

Description

Non-return valve core for submersible pump

Technical Field

The utility model belongs to the technical field of water pumps, and relates to a submersible pump, in particular to a check valve core of the submersible pump.

Background

After the submersible pump is stopped, water in a pipeline connected with an outlet of the submersible pump can flow back to a pump body of the submersible pump, and the phenomenon at least brings the following two problems: 1. gravel carried in the returned water enters the pump body to prevent the impeller from running; 2. the water in the pipeline is emptied to form vacuum, so that the starting of the submersible pump is inhibited.

For the problems, people generally install a check valve core at a water outlet joint of a submersible pump, and the check valve core is structurally disclosed in China patent library, namely a buffer sealing device (application number: 201020279437.0) of a check valve of the submersible pump, the buffer sealing device comprises a pump barrel of the submersible pump, the water outlet joint is installed on the inner wall of the upper end of the pump barrel, a supporting frame is installed at the lower end of the water outlet joint, a water flow hole is formed in the supporting frame, a valve core is installed in the water flow hole, the valve core comprises a valve ring, a concave cover is arranged in the valve ring, a valve foot is arranged below the valve ring, a folded edge is arranged on the valve ring, an O-shaped ring is arranged below the folded edge, a limiting ring is arranged in the supporting frame, and the O-shaped ring is matched with the upper end of the limiting ring.

The sealing device utilizes a 0-shaped ring to press on the support frame to completely separate the connection between the pipeline and the pump body, but the mode has a problem: when the water level in the well is lower than the pump body, vacuum can be formed in the pump body, and when the water level rises, air in the pump body cannot be discharged out due to the blocking of the sealing device, so that the submersible pump cannot work when restarted.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a submersible pump check valve core with stable work.

The aim of the utility model can be achieved by the following technical scheme: the utility model provides a immersible pump check valve core, includes valve plate and vertical shaping round valve foot in the valve plate bottom, its characterized in that, the shaping of valve plate top has the cylinder of vertical setting, is equipped with the through-hole in the cylinder, and the through-hole is vertical setting, and the both ends of through-hole extend to cylinder top surface and valve plate bottom surface respectively, and the aperture of through-hole is 2.75mm ~ 3.25mm.

The cylinder is protruded from the top of the valve plate, a through hole with an extremely small aperture is formed in the cylinder, and the valve core is used for discharging air in the pump body on the premise that sand particles are blocked to be discharged into the pump body of the submersible pump through the through hole so as to enable the valve core to stably play a non-return function, so that the normal starting of the submersible pump is ensured.

Meanwhile, after the valve core is in a non-return state, the aperture of the through hole is extremely small, so that water in the pipeline flows back at extremely low flow rate and extremely low speed, a certain water level in the pipeline is ensured all the time, and the stable and normal starting of the submersible pump is further ensured.

In the submerged pump check valve core, the top surface of the cylinder is a convex spherical surface, and the through hole and the cylinder are coaxially arranged, so that the grinding wheel is prevented from being detained to cover the upper orifice of the through hole, and the smooth exhaust process is ensured.

In the submerged pump check valve core, the top of the valve plate is provided with a groove, and the cylinder is formed on the bottom surface of the groove. The groove is used for storing gravel carried in the backflow fluid, so that the gravel is effectively reduced from flowing to the contact sealing surface of the valve core and the submersible pump, and stable operation of the valve core is ensured.

In the submerged pump check valve core, the cylinder, the groove and the valve plate are coaxially arranged.

In the submerged pump check valve core, the axial section of the outer side surface of the cylinder is in a concave circular arc shape to form diversion, so that gravel smoothly enters the groove.

In the above-mentioned immersible pump check case, the shaping has the rib on the recess bottom surface, and the rib has two at least and along cylinder circumference equipartition, and the both ends of every rib all extend to recess medial surface and cylinder respectively to strengthen the bulk strength of cylinder and valve plate, improve the structural stability of this case.

Compared with the prior art, the check valve core of the submersible pump has the following advantages:

1. the cylinder is protruded from the top of the valve plate, a through hole with an extremely small aperture is formed in the cylinder, and the valve core is used for discharging air in the pump body on the premise that sand particles are blocked to be discharged into the pump body of the submersible pump through the through hole so as to enable the valve core to stably play a non-return function, so that the normal starting of the submersible pump is ensured.

2. After the valve core is in a non-return state, the aperture of the through hole is extremely small, so that water in the pipeline flows back at extremely low flow rate and extremely low speed, a certain water level in the pipeline is ensured all the time, and the stable and normal starting of the submersible pump is further ensured.

Drawings

Fig. 1 is a schematic perspective view of a check valve core of the submersible pump.

Fig. 2 is a schematic cross-sectional view of the check valve core of the submersible pump.

Fig. 3 is a schematic diagram of the installation structure of the check valve core of the submersible pump.

In the figure, 1, a valve plate; 1a, an annular step; 1b, a column; 1b1, through holes; 1b2, convex sphere; 1c, grooves; 1d, ribs; 2. and a valve foot.

Detailed Description

The following are specific embodiments of the present utility model and the technical solutions of the present utility model will be further described with reference to the accompanying drawings, but the present utility model is not limited to these embodiments.

As shown in fig. 1, the check valve core of the submersible pump comprises a valve plate 1 and a circle of valve feet 2 vertically formed at the bottom of the valve plate 1, and the valve plate 1 and the valve feet 2 are of an integrated structure.

In particular the number of the elements,

the valve foot 2 is L-shaped;

an annular step 1a is formed on the outer wall of the lower end of the valve plate 1, and the bottom surface of the annular step 1a is a sealing surface of the valve core. As shown in fig. 1 and 2, the top of the valve plate 1 is formed with a vertically arranged column 1b, a through hole 1b1 is arranged in the column 1b, the through hole 1b1 is vertically arranged, two ends of the through hole 1b1 extend to the top surface of the column 1b and the bottom surface of the valve plate 1 respectively, that is, at this time, two ends of the through hole 1b1 are all open. The aperture of the through hole 1b1 is 2.75mm to 3.25mm, and the aperture of the through hole 1b1 is preferably 3mm.

As shown in fig. 3, the top of the valve plate 1 protrudes out of the cylinder 1b, and a through hole 1b1 with a very small aperture is formed in the cylinder 1b, so that the valve core is used for discharging air in the pump body on the premise that sand particles are blocked from being discharged into the pump body of the submersible pump through the through hole 1b1 to enable the valve core to stably play a non-return function, and the normal starting of the submersible pump is ensured. Meanwhile, after the valve core is in a non-return state, the aperture of the through hole 1b1 is extremely small, so that water in the pipeline flows back at extremely low flow rate and extremely low speed, a certain water level in the pipeline is ensured all the time, and the stable and normal starting of the submersible pump is further ensured.

In an actual product, the through hole 1b1, the cylinder 1b and the valve plate 1 are coaxially arranged.

Further, the top surface of the cylinder 1b is a convex spherical surface 1b2, and the through hole 1b1 and the cylinder 1b are coaxially arranged, so that the grinding wheel is prevented from being detained to cover the hole opening on the through hole 1b1, and the smooth exhaust process is ensured. The axial section of the outer side surface of the column body 1b is in a concave circular arc shape to form a diversion.

As shown in fig. 1, a groove 1c is formed in the top of the valve plate 1, and the groove 1c is coaxial with the valve plate 1. The shape of the recess 1c is preferably circular. The cylinder 1b is formed on the bottom surface of the groove 1c, ribs 1d are formed on the bottom surface of the groove 1c, at least two ribs 1d are uniformly distributed along the circumferential direction of the cylinder 1b, and two ends of each rib 1d extend to the inner side surface of the groove 1c and the cylinder 1b respectively so as to strengthen the overall strength of the cylinder 1b and the valve plate 1 and improve the structural stability of the valve core. Preferably, the number of ribs 1d is 4.

The groove 1c is used for storing gravel carried in the backflow fluid, so that the gravel is effectively reduced from flowing to the contact sealing surface of the valve core and the submersible pump, and stable operation of the valve core is ensured.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the utility model. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the utility model or exceeding the scope of the utility model as defined in the accompanying claims.

Claims

1. The utility model provides a immersible pump check valve case, includes valve plate (1) and vertical shaping round valve foot (2) in valve plate (1) bottom, and its characterized in that, valve plate (1) top shaping has cylinder (1 b) of vertical setting, is equipped with through-hole (1 b 1) in cylinder (1 b), and through-hole (1 b 1) are vertical setting, and the both ends of through-hole (1 b 1) extend to cylinder (1 b) top surface and valve plate (1) bottom surface respectively, and the aperture of through-hole (1 b 1) is 2.75mm ~ 3.25mm.

2. The submersible pump check valve cartridge according to claim 1, wherein the top surface of the cylinder (1 b) is a convex spherical surface (1 b 2), and the through hole (1 b 1) and the cylinder (1 b) are coaxially arranged.

3. The submersible pump check valve core according to claim 1 or 2, wherein the top of the valve plate (1) is provided with a groove (1 c), and the cylinder (1 b) is formed on the bottom surface of the groove (1 c).

4. A submersible pump check valve cartridge according to claim 3, characterized in that the cylinder (1 b), the groove (1 c) and the valve plate (1) are coaxially arranged.

5. The submersible pump check valve cartridge according to claim 4, wherein the axial cross-section of the outer side surface of the cylinder (1 b) is in the shape of a concave circular arc.

6. The submersible pump check valve core according to claim 5, wherein ribs (1 d) are formed on the bottom surface of the groove (1 c), at least two ribs (1 d) are uniformly distributed along the circumference of the cylinder (1 b), and two ends of each rib (1 d) extend to the inner side surface of the groove (1 c) and the cylinder (1 b) respectively.