Flexible pump with self-suction function

Abstract

The utility model relates to the technical field of fluid conveying devices, and provides a flexible pump with a self-suction function, the flexible pump comprises a driver, a cylinder body, an impeller and a cover plate which are sequentially arranged, the cylinder body is of an eccentric structure and is arranged on the driver, the cylinder body is hollow and is provided with a containing cavity, the impeller is rotatably connected to the interior of the containing cavity of the cylinder body, and the cover plate is arranged in the containing cavity of the cylinder body. An output shaft of the driver is connected with the impeller and used for controlling the impeller to rotate, a liquid inlet and a liquid outlet are formed in the cylinder body, and the liquid inlet and the liquid outlet are both communicated with the containing cavity; the cover plate is arranged on the side, away from the driver, of the impeller, and the cover plate is locked on the driver through a first fastener. The pump has the effects of saving the assembly process of the pump and improving the operation efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of fluid delivery devices, and in particular to a flexible pump with a self-priming function. Background Art

[0002] The existing liquid pump mainly includes a pump body and a motor that drives the pump body to transport fluid. A pump shaft is arranged in the pump body, and an impeller is arranged at the front end of the pump shaft. Front sealing rings and rear sealing rings are arranged on the inner wall of the pump body corresponding to the hub on both sides of the impeller. The inner diameters of the front sealing rings and the rear sealing rings are equal. A balancing through hole is arranged on the impeller. The balancing through hole, the front sealing ring and the rear sealing ring cooperate with each other to balance the axial force. When transporting fluid, the pump is often equipped with a valve assembly as a fluid transport switch to ensure the stability of fluid transport.

[0003] With respect to the above-mentioned related technologies, the assembly of the liquid pump is relatively complicated and the cost is relatively high, so there is room for improvement. Utility Model Content

[0004] In order to save the assembly process of the pump and improve the operating efficiency, the present application provides a flexible pump with a self-priming function.

[0005] The present application provides a flexible pump with a self-priming function using the following technical solution:

[0006] A flexible pump with a self-priming function comprises a driver, a cylinder, an impeller and a cover plate which are arranged in sequence, wherein the cylinder is an eccentric structure and is arranged on the driver, the cylinder is hollow and forms a cavity, the impeller is rotatably connected to the cavity of the cylinder, the output shaft of the driver is connected to the impeller and is used to control the rotation of the impeller, the cylinder is respectively provided with a liquid inlet and a liquid outlet, and the liquid inlet and the liquid outlet are both connected to the cavity; the cover plate is arranged on a side of the impeller away from the driver, and the cover plate is locked to the driver by a first fastener.

[0007] By adopting the above technical solution, the driver is powered on and rotated to drive the impeller to rotate. When the impeller rotates to disengage from the eccentric structure on the inner wall of the cylinder body, the internal cavity between the two blades of the impeller changes from small to large, thereby realizing the action of sucking liquid. At this time, the liquid enters the cavity from the liquid inlet. When the impeller rotates to the eccentric structure on the inner wall of the pump seat, the internal cavity between the two blades of the impeller changes from large to small, thereby realizing the action of discharging liquid. At this time, the liquid in the cavity is discharged from the liquid outlet. The cover plate is arranged on the impeller to protect the impeller; at the same time, the cover plate and the cylinder body cooperate with each other to form a closed cavity, reducing the possibility of liquid leakage. The structure of the entire pump is simple, which can save processes during assembly and improve operating efficiency.

[0008] Preferably, the driver is a drive motor or a drive electric motor.

[0009] By adopting the above technical solution, a drive motor or a drive electric motor can be used to drive the impeller to rotate.

[0010] Preferably, the flexible pump further comprises a base, wherein the base is disposed between the driver and the cylinder body, the base is locked to the driver via a second fastener, and the output shaft of the driver passes through the base and is connected to the impeller.

[0011] By adopting the above technical solution, the base can serve as a carrier to support the cylinder body; at the same time, the base also serves as a connection to connect the driver and the cylinder body.

[0012] Preferably, the base is also connected to a shaft seal, the output shaft of the driver passes through the shaft seal, and the shaft seal is used to prevent liquid leakage.

[0013] By adopting the above technical solution, the shaft seal is a friction seal or stuffing box, which is used to prevent liquid leakage between the shaft and the bearing of the fluid conveying equipment and plays a sealing role.

[0014] Preferably, the impeller is made of a flexible material, and the flexible material is rubber or elastic plastic.

[0015] By adopting the above technical solution, this flexible pump uses the elastic characteristics of the flexible impeller so that even if foreign matter enters the pump body, the airtightness is still normal and the pump can still meet the self-propulsion function. Through this design, on the one hand, it can solve the disadvantage of ordinary centrifugal pumps without self-propulsion function, and at the same time, it can make up for the defect of diaphragm pumps with poor resistance to foreign matter. In addition, by adjusting the material of the flexible impeller, the pump can be made more chemically resistant and weather resistant. This pump can be used in occasions such as floor scrubbers and tooth washers that require resistance to foreign matter.

[0016] Preferably, the impeller is connected to the output shaft of the driver via a bearing.

[0017] By adopting the above technical solution, the bearing is an important component in contemporary mechanical equipment. The impeller is connected to the output shaft through the bearing, so that the driver can drive the impeller to rotate. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy.

[0018] Preferably, a sealing member is further provided between the cover plate and the cylinder body, a groove is provided on the cylinder body, and the sealing member is embedded in the groove.

[0019] By adopting the above technical solution, the sealing member can improve the sealing performance between the cover plate and the cylinder body, and further reduce the possibility of liquid leaking from the cavity.

[0020] Preferably, the impeller and the cylinder body are interference fit.

[0021] By adopting the above technical solution, the outer side of the flexible impeller is interference fit with the cylinder body, and at the same time cooperates with the eccentric structure and shaft seal in the cylinder body to form a closed inlet and outlet liquid cavity.

[0022] Preferably, the first fastening member is a first fastening bolt or a fastening screw, and the first fastening bolt or the fastening screw passes through the cover plate and the cylinder body in sequence and is screwed onto the driver.

[0023] By adopting the above technical solution, the first fastening bolt or fastening screw is a common detachable object, and the tight connection of the various components of the pump body is achieved by relying on the screw connection force.

[0024] In summary, the present application includes at least one of the following beneficial technical effects:

[0025] (1) By setting up a driver, a cylinder, an impeller and a cover plate, the driver is powered on to rotate and drive the impeller to rotate. When the impeller rotates to separate from the eccentric structure of the inner wall of the cylinder, the internal volume between the two blades of the impeller changes from small to large, thereby realizing the action of sucking liquid. When the impeller rotates to the eccentric structure of the inner wall of the pump seat, the internal volume between the two blades of the impeller changes from large to small, thereby realizing the action of discharging liquid. The structure of the entire pump is simple, which saves the assembly process of the pump and improves the operating efficiency.

[0026] (2) By setting up a shaft seal, the shaft seal can play a sealing role, thereby forming a liquid chamber.

[0027] (3) By using flexible materials to make the impeller, the elastic characteristics of the flexible impeller ensure that even if foreign matter enters the pump body, the air tightness remains normal and the pump can still meet its self-propulsion function. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the flexible pump in the embodiment of the present application;

[0029] Figure 2 is a cross-sectional schematic diagram of a flexible pump in an embodiment of the present application;

[0030] Figure 3 is an exploded schematic diagram of a flexible pump in an embodiment of the present application;

[0031] Figure 4 This is a schematic diagram of the structure of the flexible pump in the embodiment of the present application in which the cover plate is omitted;

[0032] Figure 5 yes Figure 4 Schematic diagram of the structure from another perspective.

[0033] Figure numerals: 1. driver; 2. base; 3. cylinder body; 4. impeller; 5. cover plate; 6. second fastener; 7. cavity; 8. liquid inlet; 9. liquid outlet; 10. first fastener; 11. bearing; 12. shaft seal; 13. sealing member; 14. groove. DETAILED DESCRIPTION

[0034] The technical solution of the present application will be described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. The present application can be embodied in many different forms and is not limited to the embodiments described here.

[0035] In the description of the present application, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics represented in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. Moreover, the specific features, structures, materials or characteristics represented can be combined in any one or more embodiments or examples in a suitable manner.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0037] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection; it can also be a detachable connection; or integrated; it can also be a mechanical connection. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0038] Some embodiments of the present application are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, those skilled in the art may combine and combine different embodiments or examples and features of different embodiments or examples shown in the present application.

[0039] The present application embodiment discloses a flexible pump with self-priming function. Figures 1 to 3The flexible pump includes a driver 1, a base 2, a cylinder 3, an impeller 4 and a cover plate 5 which are arranged in sequence from bottom to top. The base 2 is located between the driver 1 and the cylinder 3 and is locked to the driver 1 through a second fastener 6. The second fastener 6 is a second fastening bolt or a fastening screw. In this embodiment, the second fastening screw is used as an example for explanation. The second fastening screw passes through the base 2 and is screwed to one end of the output shaft of the driver 1 to complete the fixing of the base 2. Figure 4 and Figure 5 The cylinder 3 is installed on the base 2 and has an eccentric structure ( Figure 5 The cylinder body 3 is hollow and has a cavity 7 formed therein. The impeller 4 is rotatably connected to the cavity 7 of the cylinder body 3. Meanwhile, the impeller 4 in this embodiment is made of a flexible material, including but not limited to rubber and elastic plastic. The impeller 4 and the cylinder body 3 are interference-fitted ( Figure 5 The output shaft of the driver 1 is connected to the impeller 4 through the bearing 11. The driver 1 is used to control the rotation of the impeller 4. The driver 1 is a driving motor or a driving motor. This embodiment is described with a driving motor.

[0040] Among them, refer to Figure 2 The cylinder body 3 is also provided with a liquid inlet 8 and a liquid outlet 9, both of which are connected to the chamber 7. The cover plate 5 is located on the side of the impeller 4 away from the drive motor, and the cover plate 5 is locked to the drive motor through a first fastener. The cover plate 5 is covered on the impeller 4, which can serve as a barrier and protection for the impeller 4. The first fastener 10 is a first fastening bolt or a fastening screw. In this embodiment, the first fastening screw is used for explanation. The first fastening screw passes through the cover plate 5, the cylinder body 3 and the base 2 in sequence, and is finally screwed to the drive motor.

[0041] The driver 1 is powered on and rotated to drive the impeller 4 to rotate. When the impeller 4 rotates to separate from the eccentric structure of the inner wall of the cylinder 3, the internal cavity 7 between the two blades of the impeller 4 changes from small to large, thereby realizing the action of sucking liquid. At this time, the liquid enters the cavity 7 from the liquid inlet 8. When the impeller 4 rotates to the eccentric structure of the inner wall of the pump seat, the internal cavity 7 between the two blades of the impeller 4 changes from large to small, thereby realizing the action of discharging liquid. At this time, the liquid in the cavity 7 is discharged from the liquid outlet 9. The structure of the entire pump is simple, which can save steps during assembly and improve operating efficiency.

[0042] In addition, the flexible pump uses the elasticity of the flexible impeller 4 so that even if foreign matter enters the pump body, the airtightness is still normal and the pump can still meet the self-propulsion function. Through this design, on the one hand, the disadvantage of ordinary centrifugal pumps without self-propulsion function can be solved, and at the same time, the defect of the diaphragm pump's poor ability to resist foreign matter can be compensated. In addition, the material of the flexible impeller 4 can be adjusted to make the pump more chemically resistant and weather resistant. This pump can be used in places where anti-foreign matter ability is required, such as floor scrubbers and tooth washers.

[0043] According to some embodiments of the present application, optionally, please refer to Figure 3 The base 2 is also connected to a shaft seal 12, through which the output shaft of the driving motor passes and is connected to the impeller 4. The shaft seal 12 is a friction seal or a stuffing box, which is used to prevent liquid leakage between the shaft of the fluid conveying equipment and the bearing 11, and plays a sealing role.

[0044] In addition, a sealing member 13 is installed between the cover plate 5 and the cylinder body 3. In this embodiment, the sealing member 13 is a sealing ring. An annular groove 14 is provided on the surface of the cylinder body 3. The sealing ring is embedded in the groove 14. The cover plate 5 presses the sealing ring against the cylinder body 3. The sealing ring can improve the sealing performance between the cover plate 5 and the cylinder body 3, and further reduce the possibility of liquid leaking from the chamber 7.

[0045] The implementation principle of a flexible pump with a self-priming function in the embodiment of the present application is as follows: the flexible impeller 4 forms a closed cavity 7 through the cover plate 5, the sealing ring, the shaft seal 12 and the body, and the flexible impeller 4 is fixed to the motor shaft through the bearing 11. The driving motor is powered on to rotate to drive the flexible impeller 4 to rotate. When the impeller 4 rotates to detach from the eccentric structure of the inner wall of the pump seat, the internal cavity 7 between the two blades of the impeller 4 changes from small to large, thereby realizing the action of sucking liquid. When the impeller 4 rotates to the eccentric structure of the inner wall of the pump seat, the internal cavity 7 between the two blades of the impeller 4 changes from large to small, thereby realizing the action of discharging liquid.

[0046] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A flexible pump with self-priming function, characterized in that: The invention comprises a driver (1), a cylinder (3), an impeller (4) and a cover plate (5) which are arranged in sequence. The cylinder (3) is an eccentric structure and is arranged on the driver (1). The cylinder (3) is hollow and has a cavity (7). The impeller (4) is rotatably connected to the cavity (7) of the cylinder (3). The output shaft of the driver (1) is connected to the impeller (4) and is used to control the rotation of the impeller (4). The cylinder (3) is respectively provided with a liquid inlet (8) and a liquid outlet (9). Both the liquid inlet (8) and the liquid outlet (9) are in communication with the cavity (7). The cover plate (5) is arranged on a side of the impeller (4) away from the driver (1). The cover plate (5) is locked to the driver (1) via a first fastener (10).

2. A flexible pump with self-priming function according to claim 1, characterized in that: The driver (1) is a drive motor or a drive electric motor.

3. A flexible pump with self-priming function according to claim 1, characterized in that: The flexible pump further comprises a base (2), wherein the base (2) is arranged between the driver (1) and the cylinder body (3), the base (2) is locked to the driver (1) via a second fastener (6), and an output shaft of the driver (1) passes through the base (2) and is connected to the impeller (4).

4. A flexible pump with self-priming function according to claim 3, characterized in that: The base (2) is also connected to a shaft seal (12), and the output shaft of the driver (1) passes through the shaft seal (12). The shaft seal (12) is used to prevent liquid leakage.

5. A flexible pump with self-priming function according to claim 1, characterized in that: The impeller (4) is made of a flexible material, and the flexible material is rubber or elastic plastic.

6. A flexible pump with self-priming function according to claim 1, characterized in that: The impeller (4) is connected to the output shaft of the driver (1) via a bearing (11).

7. A flexible pump with self-priming function according to claim 3, characterized in that: A sealing member (13) is further provided between the cover plate (5) and the cylinder body (3); a groove (14) is provided on the cylinder body (3); and the sealing member (13) is embedded in the groove (14).

8. A flexible pump with self-priming function according to claim 3, characterized in that: The impeller (4) and the cylinder body (3) are interference fit.

9. A flexible pump with self-priming function according to claim 1, characterized in that: The first fastening member (10) is a first fastening bolt or a fastening screw, which passes through the cover plate (5) and the cylinder body (3) in sequence and is screwed onto the driver (1).

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