A high-efficiency self-priming pump with a sealed structure

Abstract

This utility model belongs to the field of self-priming pump technology, and particularly relates to a high-efficiency self-priming pump with a sealing structure. It includes a base, a working motor fixedly connected to the top of the base, and a pump body fixedly connected to the top edge of the base. The output end of the working motor is fixedly connected to a connecting shaft screwed onto the inner wall of the pump body. Pump blades are fixedly connected to the outer wall of the connecting shaft. A flow shroud is fixedly connected to the outer side of the pump blades and to the inner wall of the pump body. One end of the flow shroud is fixedly connected to an inlet pipe. By setting a "T"-shaped sealing gasket, the inlet pipe and the water inlet pipe are sealed. Then, the operator places a first protective cover and a second protective cover on the connection between the inlet pipe and the water inlet pipe, so that the protective gasket fits against the outer wall of the inlet pipe and the water inlet pipe, thus protecting the sealing gasket and preventing corrosion that could reduce its sealing performance.

Description

Technical Field

[0001] This utility model belongs to the field of self-priming pump technology, and in particular relates to a high-efficiency self-priming pump with a sealing structure. Background Technology

[0002] Self-priming pumps are a type of self-priming centrifugal pump. They have advantages such as compact structure, convenient operation, stable operation, easy maintenance, high efficiency, long service life, and strong self-priming ability. The working principle of a self-priming pump is that the pump casing is filled with water before the pump is started. After starting, the impeller rotates at high speed, causing the water in the impeller channel to flow towards the volute. At this time, a vacuum is formed at the inlet, which opens the inlet check valve, allowing air in the suction pipe to enter the pump and reach the outer edge through the impeller channel.

[0003] For example, patent CN221054014U discloses a self-priming pump, including a mounting base. A self-priming pump body is fixedly connected to the top of the mounting base. One end of the self-priming pump body is provided with an inlet pipe, and the other end is provided with an outlet pipe. Support rods are fixedly connected to the four ends of the mounting base. A support seat is provided at the lower end of the support rods, and a base is fixedly connected to the bottom of the support seat. By setting the support rods, support seat, and damping spring at the bottom, the self-priming pump can be shock-absorbing and buffered, preventing the self-priming pump from vibrating and damaging internal parts during operation, and preventing excessive noise. Furthermore, by setting a buffer ball in the upper middle of the base, it can work with the shock-absorbing components to buffer, ensuring the shock-absorbing performance of the entire device.

[0004] Existing high-efficiency self-priming pumps with sealing structures are prone to corrosion of the sealing gaskets during use, leading to a decrease in their sealing performance. Therefore, we propose a high-efficiency self-priming pump with a sealing structure. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned technical problems by providing a high-efficiency self-priming pump with a sealing structure, thereby preventing the sealing gasket from being easily corroded and causing a decrease in its sealing performance.

[0006] In view of this, the present invention provides a high-efficiency self-priming pump with a sealing structure, including a base, a working motor fixedly connected to the top of the base, a pump body fixedly connected to the top edge of the base, a connecting shaft screwed to the inner wall of the pump body fixedly connected to the output end of the working motor, a pump blade fixedly connected to the outer wall of the connecting shaft, a flow shroud fixedly connected to the outer side of the pump blade and the inner wall of the pump body, an inlet pipe fixedly connected to one end of the flow shroud, a first protective cover sleeved on one end of the inlet pipe, a second protective cover hinged to the top of the first protective cover and bolted to the bottom end of the first protective cover, a protective gasket fixedly connected to the inner wall of the second protective cover, a water inlet pipe fitted to the outer wall of the inlet pipe, a sealing gasket provided at the connection between the water inlet pipe and the inlet pipe, and an outlet flange provided at the top of the pump body.

[0007] Based on the above structure, the workers use bolts to connect the liquid inlet pipe and the water inlet pipe. By setting a "T"-shaped sealing gasket, the liquid inlet pipe and the water inlet pipe are sealed. Then, the workers put the first protective cover and the second protective cover on the connection part of the liquid inlet pipe and the water inlet pipe, so that the protective gasket is in contact with the outer wall of the liquid inlet pipe and the water inlet pipe, thereby protecting the sealing gasket and preventing the sealing gasket from being corroded and thus reducing the sealing performance of the sealing gasket.

[0008] Preferably, the cross-sections of the first protective cover and the second protective cover are both C-shaped. In this embodiment, by setting the first protective cover and the second protective cover, which both have C-shaped cross-sections, the sealing gasket is protected.

[0009] Preferably, two sets of protective gaskets are provided, and the two sets of protective gaskets are respectively attached to the liquid inlet pipe and the water inlet pipe. The cross-section of the protective gasket is "L" shaped. In this embodiment, by providing two sets of protective gaskets with "L" shaped cross-sections, it is beneficial to perform sealing operations on the sealing gasket and avoid corrosion of the sealing gasket.

[0010] Preferably, the sealing gasket has a "T" shaped cross-section. In this embodiment, the sealing operation of the liquid inlet pipe and the water inlet pipe is achieved by setting a sealing gasket with a "T" shaped cross-section.

[0011] Preferably, a water inlet is provided on one side of the outlet flange. A spring is fixedly connected to the inner wall of the water inlet. A sealing piston is fixedly connected to the top of the spring. A lifting cylinder is fixedly connected to the top of the sealing piston. A limit ring is fixedly connected to the inner wall of the water inlet above the lifting cylinder. A movable hole is opened on the outer wall of the lifting cylinder, and a connecting hole is opened on the outer wall of the water inlet. In this embodiment, the high-pressure liquid overcomes the elastic force of the spring and drives the sealing piston to slide vertically along the inner wall of the water inlet. The sliding of the sealing piston drives the lifting cylinder to slide synchronously. When the movable hole and the connecting hole are connected, the high-pressure liquid is injected into the pump body through the connecting hole. After the high-pressure liquid is injected, the spring drives the lifting cylinder at the top of the sealing piston to fit tightly against the bottom end of the limit ring through its own elastic force, thereby realizing the automatic sealing operation of the water inlet.

[0012] Preferably, the lifting cylinder forms a lifting structure with the sealing piston and the limiting ring through a spring. In this embodiment, the spring drives the lifting cylinder at the top of the sealing piston to fit tightly with the bottom of the limiting ring through its own elastic force, thereby realizing the automatic sealing operation of the water inlet.

[0013] Preferably, four sets of movable holes and four sets of connecting holes are provided, and the four sets of movable holes and the four sets of connecting holes correspond one-to-one. The movable holes are elongated in shape. In this embodiment, the high-pressure liquid overcomes the elastic force of the spring and drives the sealing piston to slide vertically along the inner wall of the water inlet. The sliding of the sealing piston drives the lifting cylinder to slide synchronously. When the movable hole and the connecting hole are connected, the high-pressure liquid is injected into the pump body through the connecting hole.

[0014] The beneficial effects of this utility model are:

[0015] 1. This high-efficiency self-priming pump with a sealing structure achieves sealing of the inlet pipe and the water inlet pipe by setting a "T"-shaped sealing gasket. Then, the operator puts the first protective cover and the second protective cover on the connection part of the inlet pipe and the water inlet pipe, so that the protective gasket fits against the outer wall of the inlet pipe and the water inlet pipe, thereby protecting the sealing gasket and preventing the sealing gasket from being corroded and thus reducing the sealing performance of the sealing gasket.

[0016] 2. This high-efficiency self-priming pump with a sealing structure, through the setting of a lifting cylinder, allows high-pressure liquid to overcome the elastic force of the spring and drive the sealing piston to slide vertically along the inner wall of the water inlet. The sliding of the sealing piston drives the lifting cylinder to slide synchronously. When the movable hole and the connecting hole are connected, the high-pressure liquid is injected into the pump body through the connecting hole. After the high-pressure liquid injection is completed, the spring drives the lifting cylinder at the top of the sealing piston to fit tightly against the bottom end of the limit ring through its own elastic force, thereby realizing the automatic sealing operation of the water inlet. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic cross-sectional view of the pump body of this utility model;

[0019] Figure 3 This is a cross-sectional view of the connection between the liquid inlet pipe and the water inlet pipe of this utility model.

[0020] Figure 4 This is a cross-sectional view of the water inlet structure of this utility model.

[0021] The markings in the diagram are as follows:

[0022] 1. Base; 101. Working motor; 2. Pump body; 3. Connecting shaft; 4. Pump impeller; 5. Regulator; 6. Inlet pipe; 7. First protective cover; 8. Second protective cover; 9. Protective gasket; 10. Water inlet pipe; 11. Sealing gasket; 12. Outlet flange; 13. Water inlet; 14. Spring; 15. Sealing piston; 16. Lifting cylinder; 17. Limiting ring; 18. Movable hole; 19. Connecting hole. Detailed Implementation

[0023] The following is in conjunction with the appendix Figure 1 - Figure 4 This application will be described in further detail.

[0024] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," and "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0025] This application discloses a high-efficiency self-priming pump with a sealing structure, including a base 1. A working motor 101 is fixedly connected to the top of the base 1. A pump body 2 is fixedly connected to the top edge of the base 1. A connecting shaft 3, which is screwed to the inner wall of the pump body 2, is fixedly connected to the output end of the working motor 101. A pump blade 4 is fixedly connected to the outer wall of the connecting shaft 3. A flow shroud 5, which is fixedly connected to the inner wall of the pump body 2, is provided on the outside of the pump blade 4. An inlet pipe 6 is fixedly connected to one end of the flow shroud 5. A first protective cover 7 is sleeved on one end of the inlet pipe 6. A second protective cover 8, which is bolted to the bottom end of the first protective cover 7, is hinged to the top of the first protective cover 7. A protective gasket 9 is fixedly connected to the inner wall of the second protective cover 8. A water inlet pipe 10 is attached to the outer wall of the inlet pipe 6. A sealing gasket 11 is provided at the connection between the water inlet pipe 10 and the inlet pipe 6. An outlet flange 12 is provided at the top of the pump body 2.

[0026] Based on the above structure, the workers use bolts to connect the liquid inlet pipe 6 and the water inlet pipe 10. By setting a "T"-shaped sealing gasket 11, the liquid inlet pipe 6 and the water inlet pipe 10 are sealed. Then, the workers put the first protective cover 7 and the second protective cover 8 on the connection part of the liquid inlet pipe 6 and the water inlet pipe 10, so that the protective gasket 9 is in contact with the outer wall of the liquid inlet pipe 6 and the water inlet pipe 10, thereby protecting the sealing gasket 11 and preventing the sealing gasket 11 from being corroded and thus reducing its sealing performance.

[0027] In one embodiment, the cross-sections of both the first protective cover 7 and the second protective cover 8 are "C" shaped.

[0028] In this embodiment, the sealing gasket 11 is protected by setting a first protective cover 7 and a second protective cover 8, both of which have a "C" shaped cross-section.

[0029] In one embodiment, two sets of protective gaskets 9 are provided, and the two sets of protective gaskets 9 are respectively attached to the liquid inlet pipe 6 and the water inlet pipe 10. The cross-section of the protective gaskets 9 is "L" shaped.

[0030] In this embodiment, by setting two sets of protective gaskets 9 with an "L" shaped cross-section, it is beneficial to perform sealing operation on the sealing gasket 11 and avoid corrosion of the sealing gasket 11.

[0031] In one embodiment, the sealing gasket 11 has a "T" shaped cross-section.

[0032] In this embodiment, a sealing gasket 11 with a "T" shaped cross-section is used to seal the liquid inlet pipe 6 and the water inlet pipe 10.

[0033] In one embodiment, a water inlet 13 is provided on one side of the outlet flange 12. A spring 14 is fixedly connected to the inner wall of the water inlet 13. A sealing piston 15 is fixedly connected to the top of the spring 14. A lifting cylinder 16 is fixedly connected to the top of the sealing piston 15. A limit ring 17 is provided above the lifting cylinder 16 and is fixedly connected to the inner wall of the water inlet 13. An movable hole 18 is provided on the outer wall of the lifting cylinder 16, and a connection hole 19 is provided on the outer wall of the water inlet 13.

[0034] In this embodiment, the high-pressure liquid overcomes the elastic force of the spring 14 and drives the sealing piston 15 to slide vertically along the inner wall of the water inlet 13. The sliding of the sealing piston 15 drives the lifting cylinder 16 to slide synchronously. When the movable hole 18 and the connecting hole 19 are connected, the high-pressure liquid is injected into the pump body 2 through the connecting hole 19. After the high-pressure liquid is injected, the spring 14 drives the lifting cylinder 16 at the top of the sealing piston 15 to fit tightly with the bottom end of the limiting ring 17 through its own elastic force, thereby realizing the automatic sealing operation of the water inlet 13.

[0035] In one embodiment, the lifting cylinder 16 forms a lifting structure with the limiting ring 17 via the spring 14 and the sealing piston 15.

[0036] In this embodiment, the spring 14 uses its own elastic force to drive the lifting cylinder 16 at the top of the sealing piston 15 to fit tightly against the bottom end of the limiting ring 17, thereby achieving automatic sealing of the water inlet 13.

[0037] In one embodiment, four sets of movable holes 18 and four sets of connecting holes 19 are provided, with the four sets of movable holes 18 and the four sets of connecting holes 19 corresponding one-to-one, and the movable holes 18 are elongated in shape.

[0038] In this embodiment, the high-pressure liquid overcomes the elastic force of the spring 14 and drives the sealing piston 15 to slide vertically along the inner wall of the water inlet 13. The sliding of the sealing piston 15 drives the lifting cylinder 16 to slide synchronously. When the movable hole 18 and the connecting hole 19 are connected, the high-pressure liquid is injected into the pump body 2 through the connecting hole 19.

[0039] In this embodiment, the high-efficiency self-priming pump with a sealing structure is used in the following steps: First, the inlet pipe 6 and the water inlet pipe 10 are sealed together. The operator uses bolts to connect the inlet pipe 6 and the water inlet pipe 10. A T-shaped sealing gasket 11 is used to seal the inlet pipe 6 and the water inlet pipe 10. Then, the operator puts the first protective cover 7 and the second protective cover 8 on the connection between the inlet pipe 6 and the water inlet pipe 10, so that the protective gasket 9 is in contact with the outer wall of the inlet pipe 6 and the water inlet pipe 10, thus protecting the sealing gasket 11 and preventing corrosion of the sealing gasket 11, which would reduce its sealing performance.

[0040] Next, when the self-priming pump is used for the first time, liquid needs to be injected through the water inlet to ensure that the self-priming pump can self-prime normally. The operator injects high-pressure liquid through the water inlet 13. The high-pressure liquid overcomes the elastic force of the spring 14 and drives the sealing piston 15 to slide vertically along the inner wall of the water inlet 13. The sliding of the sealing piston 15 drives the lifting cylinder 16 to slide synchronously. When the movable hole 18 and the connecting hole 19 are connected, the high-pressure liquid is injected into the pump body 2 through the connecting hole 19. After the high-pressure liquid is injected, the spring 14 drives the lifting cylinder 16 at the top of the sealing piston 15 to fit tightly against the bottom end of the limit ring 17 through its own elastic force, realizing the automatic sealing operation of the water inlet 13.

[0041] Finally, the working motor 101 drives the pump blade 4 on the outer wall of the connecting shaft 3 to rotate. The rotation of the pump blade 4 causes a negative pressure to be generated inside the pump body 2, which draws in the liquid stored in the storage chamber and the air in the inlet pipe 10. Under the rotation of the pump blade 4, they are completely mixed. Under the action of centrifugal force, the air in the inlet pipe 10 is continuously reduced until all the air is drawn in, completing the self-priming process. Then the liquid is discharged through the outlet flange 12.

[0042] 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 embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the 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 the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high energy efficient self-priming pump with a sealing structure, characterized in that, The system includes a base (1), a working motor (101) fixedly connected to the top of the base (1), a pump body (2) fixedly connected to the top edge of the base (1), a connecting shaft (3) screwed to the inner wall of the pump body (2) fixedly connected to the output end of the working motor (101), a pump blade (4) fixedly connected to the outer wall of the connecting shaft (3), a flow shroud (5) fixedly connected to the inner wall of the pump body (2) on the outside of the pump blade (4), and an inlet pipe (6) fixedly connected to one end of the flow shroud (5). The inlet pipe (6) is fitted with a first protective cover (7) at one end. The top of the first protective cover (7) is hinged to a second protective cover (8) which is bolted to the bottom of the first protective cover (7). A protective gasket (9) is fixedly connected to the inner wall of the second protective cover (8). A water inlet pipe (10) is attached to the outer wall of the inlet pipe (6). A sealing gasket (11) is provided at the connection between the water inlet pipe (10) and the inlet pipe (6). An outlet flange (12) is provided at the top of the pump body (2).

2. The high-efficiency self-priming pump with a sealing structure according to claim 1, characterized in that: The cross-sections of the first protective cover (7) and the second protective cover (8) are both "C" shaped.

3. The high-efficiency self-priming pump with a sealing structure according to claim 1, characterized in that: The protective gasket (9) is provided in two sets, and the two sets of protective gaskets (9) are respectively attached to the liquid inlet pipe (6) and the water inlet pipe (10). The cross-section of the protective gasket (9) is "L" shaped.

4. The high-efficiency self-priming pump with a sealing structure according to claim 1, characterized in that: The cross-section of the sealing gasket (11) is "T" shaped.

5. The high-efficiency self-priming pump with a sealing structure according to claim 1, characterized in that: A water inlet (13) is provided on one side of the outlet flange (12). A spring (14) is fixedly connected to the inner wall of the water inlet (13). A sealing piston (15) is fixedly connected to the top of the spring (14). A lifting cylinder (16) is fixedly connected to the top of the sealing piston (15). A limit ring (17) is fixedly connected to the inner wall of the water inlet (13) above the lifting cylinder (16). An movable hole (18) is opened on the outer wall of the lifting cylinder (16). A connection hole (19) is opened on the outer wall of the water inlet (13).

6. The high-efficiency self-priming pump with a sealing structure according to claim 5, characterized in that: The lifting cylinder (16) forms a lifting structure with the spring (14), the sealing piston (15) and the limiting ring (17).

7. The high-efficiency self-priming pump with a sealing structure according to claim 5, characterized in that: The movable hole (18) and the connecting hole (19) are provided in four sets, and the four sets of movable holes (18) and the four sets of connecting holes (19) correspond one-to-one. The movable hole (18) is long and narrow.

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