Flexible impeller pump

Abstract

The flexible impeller pump comprises a pump body and a motor, the pump body comprises a pump shell, an impeller and two adapting pipes, a pump chamber is formed in the pump shell, the inner side wall of the pump chamber comprises an arc surface, an outer convex surface and two inner concave surfaces, the two ends of the arc surface are connected with one ends of the two inner concave surfaces respectively, and the other ends of the two inner concave surfaces are connected with the motor. An inlet connecting pipe and an outlet connecting pipe which are communicated with the pump chamber are arranged on the outer side wall of the pump shell, the two adapter pipes are in threaded connection with the inlet connecting pipe and the outlet connecting pipe respectively, the impeller is rotationally arranged in the pump chamber and abuts against the arc surface, the inner concave surfaces and the outer convex surface, and the motor is arranged on the pump shell. And an output shaft of the motor is connected with the impeller.

Description

Technical Field

[0001] The utility model relates to the technical field of pumps, in particular to a flexible impeller pump. Background Art

[0002] The flexible impeller pump is a special type of pump that features a flexible and deformable impeller design. This design allows the pump to be more flexible in handling fluids with different characteristics, thereby improving the pump's efficiency and reliability.

[0003] However, current flexible impeller pumps have the following deficiencies in practical use: First, the deformation of the flexible impeller blades within a single rotational cycle generates significant stress, which leads to fatigue and a shortened service life. Second, the inlet and outlet pipes of current flexible impeller pumps have fixed diameters and fixed water outlet directions. Simply adjusting the pump flow rate and velocity by changing the motor tachometer makes it difficult to meet the ever-changing demands of actual use. Therefore, to address the above issues, a flexible impeller pump has been proposed. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a flexible impeller pump that can effectively relieve blade fatigue to increase the service life of the impeller, and can adjust the water inlet and outlet direction, force and pressure as needed to meet the changing usage requirements.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A flexible impeller pump comprising:

[0007] A pump body, comprising a pump casing, an impeller and two transfer pipes, a pump chamber being defined in the pump casing, an inner sidewall of the pump chamber comprising an arc surface, an outer convex surface and two inner concave surfaces, two ends of the arc surface being respectively connected with one end of the two inner concave surfaces, two ends of the outer convex surface being respectively connected with the other end of the two inner concave surfaces, an inlet pipe and an outlet pipe communicating with the pump chamber being provided on the outer sidewall of the pump casing, two transfer pipes being respectively screwed onto the inlet pipe and the outlet pipe, the impeller being rotatably disposed in the pump chamber, and the impeller being in contact with the arc surface, the inner concave surface and the outer convex surface; and

[0008] A motor is provided on the pump housing, and an output shaft of the motor is connected to the impeller.

[0009] Optionally, the diameter of the outer convex surface is smaller than the diameter of the arc surface.

[0010] Optionally, the impeller includes a blocking block, a wheel body and a plurality of blades, the blocking block is arranged in the wheel body, the blocking block is used to engage with the output shaft of the motor, and the blades are arranged around the wheel body at equal angles.

[0011] Optionally, the positioning block is provided with multiple holes, and the output shaft of the motor is adaptively inserted into the multiple holes.

[0012] Optionally, a blade column is provided on one end of the blade away from the wheel body, and the blade column is used to abut the arc surface, the inner concave surface, and the outer convex surface.

[0013] Optionally, the number of the blades is 6 to 10.

[0014] Optionally, a sealing sleeve is provided on the pump housing, and the output shaft of the motor passes through the sealing sleeve to extend into the pump chamber.

[0015] Optionally, a gasket is provided on the inner bottom wall of the pump chamber.

[0016] Optionally, a detachable pump cover is provided on one end of the pump housing away from the motor, and the pump cover is used to seal the pump chamber.

[0017] Optionally, a sealing ring is provided between the pump casing and the pump cover.

[0018] Compared with the prior art, the present invention has at least the following advantages:

[0019] 1. By setting the inner wall of the pump chamber to a structure in which an arc surface, an outer convex surface and two inner concave surfaces are connected, when the impeller continuously rotates in the pump chamber, the repeated deformation stress of the impeller can be effectively reduced, thereby effectively improving the service life of the impeller.

[0020] 2. The outer wall of the pump housing is equipped with an inlet and outlet pipe, and two adapter pipes are detachably mounted on the inlet and outlet pipes. This allows the flow rate and flow rate of the impeller pump to be adjusted by replacing the adapter pipe with a different aperture. Furthermore, by replacing the straight or curved adapter pipe, the impeller pump can be adapted to different installation locations. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1This is a schematic structural diagram of a flexible impeller pump according to one embodiment of the present invention;

[0023] Figure 2 for Figure 1 Schematic diagram of the exploded structure of the flexible impeller pump shown;

[0024] Figure 3 This is a schematic structural diagram of a pump body according to one embodiment of the present invention;

[0025] Figure 4 A bottom view of a pump housing according to an embodiment of the present invention;

[0026] Figure 5 for Figure 3 The cross-sectional structure diagram of the pump body shown;

[0027] Figure 6 This is a schematic structural diagram of an impeller according to one embodiment of the present invention.

[0028] Description of reference numerals:

[0029] 10. Flexible impeller pump; 100. Pump body; 200. Motor; 110. Pump casing; 120. Impeller; 130. Transfer pipe; 111. Pump chamber; 1111. Arc surface; 1112. Outer convex surface; 1113. Inner concave surface; 140. Inlet pipe; 150. Outlet pipe; 121. Positioning block; 122. Wheel body; 123. Blades; 1211. Multi-faceted surface; 124. Impeller column; 300. Sealing sleeve; 160. Gasket; 170. Pump cover; 180. Sealing ring. DETAILED DESCRIPTION

[0030] The following describes in detail embodiments of the present invention, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the embodiments of the present invention, and should not be construed as limiting the present invention.

[0031] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0033] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0034] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the accompanying drawings, in which preferred embodiments of the present invention are shown.

[0035] like Figures 1 to 5 As shown, a flexible impeller pump 10 includes a pump body 100 and a motor 200. The pump body 100 includes a pump casing 110, an impeller 120 and two transfer tubes 130. A pump chamber 111 is provided in the pump casing 110. The inner side wall of the pump chamber 111 includes an arc surface 1111, an outer convex surface 1112 and two inner concave surfaces 1113. The two ends of the arc surface 1111 are respectively connected to one end of the two inner concave surfaces 1113, and the two ends of the outer convex surface 1112 are respectively connected to the two inner concave surfaces 111 3 is connected, an inlet pipe 140 and an outlet pipe 150 communicating with the pump chamber 111 are provided on the outer wall of the pump housing 110, and two transfer pipes 130 are screwed onto the inlet pipe 140 and the outlet pipe 150, respectively. The impeller 120 is rotatably disposed in the pump chamber 111, and the impeller 120 abuts against the arc surface 1111, the inner concave surface 1113, and the outer convex surface 1112. The motor 200 is disposed on the pump housing 110, and the output shaft of the motor 200 is connected to the impeller 120.

[0036] It should be noted that a pump chamber 111 is defined within the pump housing 110, wherein the inner sidewall of the pump chamber 111 comprises a circular arc surface 1111, an outer convex surface 1112, and two inner concave surfaces 1113. When the impeller 120 rotates within the pump chamber 111, the impeller 120 abuts against the inner sidewall of the pump chamber 111, namely, the circular arc surface 1111, the outer convex surface 1112, and the two inner concave surfaces 1113. It should be noted that the arc surface 1111 is a cylindrical surface structure, the outer convex surface 1112 protrudes in the direction away from the center of the arc surface 1111, and the two inner concave surfaces 1113 are recessed in the circular direction close to the arc surface 1111. In this way, when the impeller 120 rotates in the pump chamber 111, the impeller 120 cyclically abuts between the arc surface 1111, one of the inner concave surfaces 1113, the outer convex surface 1112, and the other inner concave surface 1113 in sequence. Since the inner concave surface 1113 is an inwardly recessed structure, the impeller 120 will deform to the greatest extent at the position of the two inner concave surfaces 1113. However, the outer convex surface 1112 provided between the two inner concave surfaces 1113 allows the impeller 120 to be temporarily released at the outer convex surface 1112, so that the deformation of the impeller 120 is relatively reduced. In this way, when the impeller 120 continuously rotates in the pump chamber 111, the repeated deformation stress of the impeller 120 can be effectively reduced, thereby effectively improving the service life of the impeller 120. Furthermore, an inlet pipe 140 and an outlet pipe 150 are provided on the outer side wall of the pump housing 110. For example, the inlet pipe 140 and the outlet pipe 150 are both integrally formed with the pump housing 110. Furthermore, the two transfer pipes 130 are detachably mounted on the inlet pipe 140 and the outlet pipe 150. In this way, when the aperture of the replaced transfer tube 130 is different, the flow rate and flow rate of the impeller pump can be adjusted, and by replacing the straight or curved transfer tube 130, the impeller pump can be adapted to different installation occasions.

[0037] In one embodiment, the diameter of the convex surface 1112 is smaller than the diameter of the arc surface 1111. Thus, when the impeller 120 is in contact with the arc surface 1111, the impeller 120 is slightly deformed. When the impeller 120 contacts the convex surface 1112, the degree of deformation of the impeller 120 increases, thereby enabling the impeller pump to have a self-priming function.

[0038] like Figure 5 and Figure 6 As shown, in one embodiment, the impeller 120 includes a locking block 121, a wheel body 122 and a plurality of blades 123. The locking block 121 is arranged in the wheel body 122. The locking block 121 is used to engage with the output shaft of the motor 200. The blades 123 are arranged around the wheel body 122 at equal angles.

[0039] It should be noted that, for example, the retaining block 121 is made of metal, the wheel body 122 is made of rubber, and the wheel body 122 and retaining block 121 are integrally injection-molded to form a single structure, thereby reliably securing the retaining block 121 to the wheel body 122. The blades 123 are integrally formed around the wheel body 122, also made of rubber, and are spaced at equal angles. Thus, the motor 200, by driving the retaining block 121, stably drives the blades 123 to rotate within the pump chamber 111.

[0040] like Figure 6 As shown, in one embodiment, the positioning block 121 is provided with a multi-hole 1211 , and the output shaft of the motor 200 is adaptively inserted into the multi-hole 1211 .

[0041] It should be noted that, for example, the positioning block 121 is a hexagonal hole structure, and the output shaft of the motor 200 is correspondingly set to a hexagonal column structure, so that the output shaft of the motor 200 is adaptively inserted into the multi-hole 1211, thereby being able to stably drive the impeller 120 to rotate.

[0042] like Figure 6 As shown, in one embodiment, a blade column 124 is provided on one end of the blade 123 away from the wheel body 122 , and the blade column 124 is used to abut the arc surface 1111 , the inner concave surface 1113 , and the outer convex surface 1112 .

[0043] It should be noted that a blade column 124 is provided at the farthest end of the blade 123 so that the blade column 124 can reliably contact the abutting arc surface 1111, the inner concave surface 1113, and the outer convex surface 1112, thereby forming a plurality of closed chambers when the impeller 120 rotates in the pump chamber 111, so that the impeller pump can better pump liquid.

[0044] In one embodiment, the number of blades 123 is 6 to 10. For example, the number of blades 123 can also be 8, so that when the impeller 120 rotates, the liquid can be sucked better.

[0045] like Figure 5 As shown, in one embodiment, a sealing sleeve 300 is provided on the pump housing 110 , and the output shaft of the motor 200 passes through the sealing sleeve 300 to extend into the pump chamber 111 .

[0046] In this way, a through hole is opened on the top of the pump housing 110, so that the output shaft of the motor 200 passes through the through hole. In order to eliminate the gap between the output shaft of the motor 200 and the pump chamber 111, a sealing sleeve 300 is installed in the through hole, so that the output shaft of the motor 200 passes through the sealing sleeve 300.

[0047] like Figure 5 As shown, in one embodiment, a gasket 160 is provided on the inner bottom wall of the pump chamber 111 .

[0048] It should be noted that by installing the gasket 160, the gap between the blade 123 and the inner bottom wall of the pump chamber 111 can be eliminated, so that a closed space can be formed between any two adjacent blades 123. In this way, when the blade 123 is deformed, the closed space changes, thereby reducing its pressure, so that the impeller pump has a self-priming characteristic.

[0049] like Figure 3 As shown, in one embodiment, a detachable pump cover 170 is provided on one end of the pump housing 110 away from the motor 200 , and the pump cover 170 is used to seal the pump chamber 111 .

[0050] It should be noted that the pump cover 170 is a detachable structure. For example, the pump cover 170 is fixed to the bottom of the pump housing 110 by screws, so that components such as the gasket 160 and the impeller 120 can be easily installed in the pump chamber 111.

[0051] Further, if Figure 3 As shown, in one embodiment, a sealing ring 180 is provided between the pump housing 110 and the pump cover 170 .

[0052] It should be noted that in order to ensure airtightness between the pump cover 170 and the pump housing 110, a sealing ring 180 is installed between the pump cover 170 and the pump housing 110. For example, an annular groove is formed on the bottom end surface of the pump housing 110, so that a portion of the sealing ring 180 is accommodated in the annular groove. In this way, the sealing ring 180 reliably seals the pump chamber 111.

[0053] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A flexible impeller pump, characterized in that: include: A pump body, the pump body comprising a pump casing, an impeller and two transfer pipes, a pump chamber being opened in the pump casing, the inner side wall of the pump chamber comprising an arc surface, an outer convex surface and two inner concave surfaces, the two ends of the arc surface being respectively connected with one end of the two inner concave surfaces, the two ends of the outer convex surface being respectively connected with the other ends of the two inner concave surfaces, an inlet pipe and an outlet pipe communicating with the pump chamber are provided on the outer side wall of the pump casing, the two transfer pipes are respectively screwed on the inlet pipe and the outlet pipe, the impeller is rotatably arranged in the pump chamber, and the impeller abuts against the arc surface, the inner concave surface and the outer convex surface; and A motor is provided on the pump housing, and an output shaft of the motor is connected to the impeller.

2. The flexible impeller pump according to claim 1, characterized in that The diameter of the outer convex surface is smaller than the diameter of the arc surface.

3. The flexible impeller pump according to claim 1, characterized in that The impeller includes a blocking block, a wheel body and a plurality of blades. The blocking block is arranged in the wheel body and is used to be engaged with the output shaft of the motor. The blades are arranged around the wheel body at equal angles.

4. The flexible impeller pump according to claim 3, characterized in that The positioning block is provided with multiple holes, and the output shaft of the motor is adaptively inserted into the multiple holes.

5. The flexible impeller pump according to claim 3, characterized in that A blade column is provided on one end of the blade away from the wheel body, and the blade column is used to abut against the arc surface, the inner concave surface, and the outer convex surface.

6. The flexible impeller pump according to claim 5, characterized in that The number of the blades is 6 to 10.

7. The flexible impeller pump according to claim 1, characterized in that The pump housing is provided with a sealing sleeve, and the output shaft of the motor is passed through the sealing sleeve to extend into the pump chamber.

8. The flexible impeller pump according to claim 1, characterized in that The inner bottom wall of the pump chamber is provided with a gasket.

9. The flexible impeller pump according to claim 1, characterized in that A detachable pump cover is provided on one end of the pump housing away from the motor, and the pump cover is used to seal the pump chamber.

10. The flexible impeller pump according to claim 9, characterized in that A sealing ring is provided between the pump housing and the pump cover.

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