Low-deformation long-life water suction pump

Abstract

The utility model discloses a water suction pump with low deformation and long service life in the technical field of water suction pumps, a leather cup comprises a base plate, the bottom of the base plate extends and is connected with three deformation parts, the outer side of each deformation part is provided with a curved surface, one end of each deformation part is provided with a fixed end, and the end, away from the base plate, of each deformation part is provided with a plane. The radian of the curved surface of the deformation part is relatively small, the deformation part can better adapt to changes of external force and pressure, the curved surface with the small radian can more effectively disperse stress, the risk of damage caused by too large single-point stress is reduced, the deformation part can be firmly connected to the base plate through the design of the fixed end, and the service life of the base plate is prolonged. Therefore, it is ensured that the deformation part can keep the stable position and direction when subjected to external force, the deformation range of the deformation part can be effectively limited through the fixed end, then the deformation quantity and stress distribution of the deformation part are controlled, and the fixed end serves as a stress concentration area to guide stress to be distributed along a specific path. And the overall stress level of the leather cup is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to water pump technical field, concretely to a low deformation long -life water pump. BACKGROUND

[0002] The diaphragm type micro water pump is provided with the circumferential motion by the motor, and the diaphragm inside the water pump is made reciprocating motion through the mechanical device, thereby compressing and stretching the air in the pump cavity, and under the action of the one-way valve piece, the pressure difference between the drainage end or the water inlet end and the outside atmosphere is generated, under the action of the pressure difference, the water is pressed into the water inlet end, and then is discharged from the drainage end, and the micro water pump has been well applied in small household appliances, medical instruments and the like occasions.

[0003] The skin bowl structure of the micro water pump on the market is designed to increase the water yield, so the curvature of the deformation part is increased, the bottom of the deformation part is arc-shaped, and the diameter of the skin bowl rod body is increased to improve the power, however, in the actual use process, when the motor assembly drives the eccentric swing frame assembly to extrude the skin bowl for pumping, a crease is generated at the connection between the deformation part and the base plate, the deformation amount and the load of the deformation part are relatively large, and the skin bowl is prone to be broken, and the service life is short. UTILITY MODEL CONTENT

[0004] In order to overcome the defects of the prior art, the utility model provides a low deformation long -life water pump, which can effectively solve the technical problems that the deformation amount and the load of the deformation part of the skin bowl structure of the micro water pump on the market are relatively large during work, the skin bowl is prone to be broken, and the service life is short.

[0005] The utility model solves the technical problems by adopting the technical scheme that a low deformation long -life water pump, including upper cover, valve piece, sealing valve piece, umbrella, skin bowl, cylinder body, middle plate, eccentric swing frame assembly and motor assembly, the skin bowl includes base plate, three deformation parts are connected at the bottom of the base plate, the base plate is provided with bowl mouth corresponding to the number of deformation parts, the outer side of the deformation part is provided with curved surface, one end of the deformation part close to the base plate is provided with fixed end, and the other end of the deformation part away from the base plate is provided with plane.

[0006] Further, the outer edge of the base plate is provided with the first positioning groove, the outer edge of the cylinder body is provided with the first positioning protrusion corresponding to the number of the first positioning groove, the shape and size of the first positioning groove are matched with the shape and size of the first positioning protrusion, and the skin bowl is stably installed on the cylinder body.

[0007] Further, the outer edge of the sealing valve piece is provided with the second positioning groove, the outer edge of the middle plate is provided with the second positioning protrusion corresponding to the number of the second positioning groove, the shape and size of the second positioning groove are matched with the shape and size of the second positioning protrusion, and the sealing valve piece is stably installed on the middle plate.

[0008] Further, the bottom of the sealing valve piece is equipped with a first sealing ring and a second sealing ring, and the middle plate is provided with a first installation groove for installing the first sealing ring and a second installation groove for installing the second sealing ring.

[0009] Further, the upper cover, the sealing valve piece, the middle plate, the cylinder body and the motor assembly are fixed from top to bottom by installation screws, the motor assembly is connected with the eccentric swing frame assembly, the eccentric swing frame assembly is sleeved at the lower end position of the leather bowl, the motor assembly is used for driving the eccentric swing frame assembly to extrude the leather bowl for pumping, the upper cover is provided with a water inlet and a water outlet, the middle plate is provided with a water inlet hole and a water outlet hole, the upper end of the water inlet hole is in communication with the water inlet of the upper cover, the upper end of the water outlet hole is in communication with the water outlet of the upper cover, the lower ends of the water inlet hole and the water outlet hole are in communication with the inner cavity of the leather bowl, and the middle plate is provided with an umbrella at the bottom surface of the water inlet hole and is provided with a valve piece above the water outlet hole.

[0010] Compared with the prior art, the utility model has the advantages of:

[0011] Compared with the prior art, the utility model has the advantages of:

[0012] The areas of the first positioning protrusion and the second positioning protrusion are larger than those of the traditional structure, and correspondingly, the areas of the first positioning groove and the second positioning groove are also larger than those of the traditional structure, which can effectively increase the contact area of the first positioning protrusion and the base plate, reduce the stress level of the leather bowl per unit area, and thus reduce the possibility of deformation of the leather bowl. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a whole structure schematic view of the low-deformation long-service-life water pump.

[0014] Figure 2 is an exploded view of the low-deformation long-service-life water suction pump of the utility model;

[0015] Figure 3 is a structure schematic view of the leather cup in the low-deformation long-service-life water suction pump of the utility model;

[0016] Figure 4 is a sectional view of the leather cup in the low-deformation long-service-life water suction pump of the utility model;

[0017] Figure 5 is a combined structure schematic view of the leather cup and the cylinder body in the low-deformation long-service-life water suction pump of the utility model;

[0018] Figure 6 is a combined structure schematic view of the sealing valve piece and the middle plate in the low-deformation long-service-life water suction pump of the utility model;

[0019] Figure 7 is a structure schematic view of the sealing valve piece in the low-deformation long-service-life water suction pump of the utility model.

[0020] Reference numerals in the drawing:

[0021] 1 - upper cover; 3 - motor assembly; 4 - water inlet; 5 - water outlet; 6 - sealing valve piece; 61 - water inlet hole; 62 - second positioning groove; 63 - first sealing ring; 64 - second sealing ring; 7 - middle plate; 71 - second positioning protrusion; 72 - first installation groove; 73 - second installation groove; 8 - leather cup; 81 - base plate; 82 - fixed end; 83 - deformation part; 84 - curved surface; 85 - flat surface; 86 - cup mouth; 87 - first positioning groove; 9 - eccentric wheel; 10 - cylinder body; 101 - first positioning protrusion; 11 - swing frame; 12 - umbrella; 13 - valve piece. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] For example, Figures 1-7The utility model provides a low deformation high life water pump, including upper cover 1, valve piece 13, sealing valve piece 6, umbrella 12, leather cup 8, cylinder body 10, middle plate 7, eccentric swing frame 11 subassembly and motor assembly 3, leather cup 8 includes base plate 81, three deformation parts 83 are connected with the extension of base plate 81 bottom, base plate 81 is provided with the bowl mouth 86 corresponding with the number of deformation part 83, the outside of deformation part 83 is provided with curved surface 84, and one end of deformation part 83 close to base plate 81 is provided with fixed end 82, and one end of deformation part 83 away from base plate 81 is provided with plane 85;

[0024] The outer edge of base plate 81 is provided with first positioning groove 87, and the outer edge of cylinder body 10 is provided with first positioning block 101 corresponding in number with first positioning groove 87, the shape and size of first positioning groove 87 and first positioning block 101 are matched with each other, and leather cup 8 is stably installed on cylinder body 10, the outer edge of sealing valve piece 6 is provided with second positioning groove 62, the outer edge of middle plate 7 is provided with second positioning block 71 corresponding in number with second positioning groove 62, the shape and size of second positioning groove 62 and second positioning block 71 are matched with each other, and sealing valve piece 6 is stably installed on middle plate 7, the area of first positioning block 101 and second positioning block 71 is larger than that of the traditional structure, accordingly, the area of first positioning groove 87 and second positioning groove 62 is also larger than that of the traditional structure, which can effectively increase the contact area of first positioning block 101 and base plate 81, reduce the stress level on the unit area of leather cup 8, thereby reducing the possibility of deformation of leather cup 8, and the contact area of second positioning block 71 and sealing valve piece 6 is also increased, the stress level on the unit area of sealing valve piece 6 is reduced, thereby reducing the possibility of deformation of sealing valve piece 6, and the service life of sealing valve piece 6 and leather cup 8 is improved.

[0025] The bottom of sealing valve piece 6 is provided with first sealing ring 63 and second sealing ring 64, middle plate 7 is provided with first installation groove 72 for installing first sealing ring 63 and second installation groove 73 for installing second sealing ring 64, and the utility model has the advantages of strong sealing.

[0026] The upper cover 1, the sealing valve sheet 6, the middle plate 7, the cylinder body 10 and the motor assembly 3 are fixed from top to bottom by mounting screws, the output end of the motor assembly 3 is connected with the eccentric swing frame 11 assembly, the eccentric swing frame 11 assembly is sleeved at the lower end position of the leather bowl 8, the motor assembly 3 is used for driving the eccentric swing frame 11 assembly to extrude the leather bowl 8 to pump, the upper cover 1 is provided with a water inlet 4 and a water outlet 5, the middle plate 7 is provided with a water inlet hole 61 and a water outlet hole, the upper end of the water inlet hole 61 is in communication with the water inlet 4 of the upper cover 1, the upper end of the water outlet hole is in communication with the water outlet 5 of the upper cover 1, the lower end of the water inlet hole 61 and the water outlet hole is in communication with the inner cavity of the leather bowl 8, the umbrella 12 is arranged at the bottom surface of the water inlet hole 61 of the middle plate 7, and the valve sheet 13 is arranged above the water outlet hole of the middle plate 7;

[0027] The eccentric swing frame 11 assembly comprises a swing frame 11, a connecting rod and an eccentric wheel 9, the electronic assembly drives the eccentric wheel 9 to rotate, the eccentric wheel 9 drives the swing frame 11 to move through the connecting rod, the swing frame 11 is sleeved at the lower end position of the leather bowl 8, and the swing frame 11 extrudes the leather bowl 8 in a reciprocating up-down extrusion mode in sequence when moving, so that the air in the pump cavity is compressed and stretched, under the action of the one-way valve sheet 13 and the umbrella 12, a pressure difference is generated between the water outlet or the water inlet 4 and the atmosphere, water is pressed into the water inlet 4 under the action of the pressure difference, and then is discharged from the water outlet, when water flows out from the leather bowl 8 along the water outlet hole, the water blade of the valve sheet 13 is pushed up, and the water is discharged from the water outlet 5 of the upper cover 1, when water flows back from the water outlet hole to the upper cover 1, the back of the water blade of the valve sheet 13 is pushed, and the valve sheet 13 moves downward under the action of its own gravity, so that the water blade covers the water outlet hole, and the one-way valve effect is realized.

[0028] Compared with the traditional technology: compared with the traditional leather bowl 8, the curvature 84 of the deformation part 83 of the utility model is relatively small, so that the deformation part 83 can better adapt to the change of external force and pressure, and the small curvature 84 can more effectively disperse stress, reduce the risk of damage caused by excessive stress on a single point, and the design of the fixed end 82 can firmly connect the deformation part 83 to the base plate 81, so as to ensure that the deformation part 83 can maintain a stable position and direction when subjected to external force, and the deformation range of the deformation part 83 can be effectively limited through the fixed end 82, thereby controlling the deformation amount and stress distribution of the deformation part 83, at the same time, the fixed end 82 serves as a stress concentration area, guides the stress to distribute along a specific path, and reduces the overall stress level of the leather bowl 8, the design of the flat surface 85 makes the bottom end of the deformation part 83 flat, so as to better cooperate with the rod body of the leather bowl 8, in summary, when the motor assembly 3 drives the eccentric swing frame 11 assembly to extrude the leather bowl 8 to pump, the deformation amount and load of the deformation part 83 are small, thereby improving the service life of the leather bowl 8;

[0029] The area of the first positioning protrusion 101 and the second positioning protrusion 71 is larger than that of the traditional structure, and the area of the first positioning groove 87 and the second positioning groove 62 is also larger than that of the traditional structure, which can effectively increase the contact area of the first positioning protrusion 101 and the substrate 81, reduce the stress level of the skin bowl 8 per unit area, and thus reduce the possibility of deformation of the skin bowl 8.

[0030] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, but can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all aspects as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be considered as limiting the claims involved.

Claims

1. A low-deformation, high-life water pump, comprising an upper cover, a valve plate, a sealing valve plate, an umbrella, a leather cup, a cylinder body, a middle plate, an eccentric swing frame assembly and a motor assembly, characterized in that: The leather bowl includes a base plate, three deformation parts extending from the bottom of the base plate, the base plate is provided with a bowl mouth corresponding to the number of the deformation parts, a curved surface is provided on the outer side of the deformation part, a fixed end is provided at the end of the deformation part close to the base plate, and a flat surface is provided at the end of the deformation part away from the base plate.

2. A low-deformation and long-life water pump according to claim 1, characterized in that: The outer edge of the base plate is provided with a first positioning groove, and the outer edge of the cylinder body is equipped with first positioning protrusions corresponding to the number of the first positioning grooves. The shape and size of the first positioning grooves match the shape and size of the first positioning protrusions, and the leather cup is firmly installed on the cylinder body.

3. A low-deformation and long-life water pump according to claim 2, characterized in that: The outer edge of the sealing valve disc is provided with a second positioning groove, and the outer edge of the middle plate is equipped with second positioning protrusions corresponding to the number of the second positioning grooves. The shape and size of the second positioning grooves match the shape and size of the second positioning protrusions, and the sealing valve disc is firmly installed on the middle plate.

4. A low-deformation and long-life water pump according to claim 3, characterized in that: The bottom of the sealing valve plate is equipped with a first sealing ring and a second sealing ring, and the middle plate is provided with a first mounting groove for mounting the first sealing ring and a second mounting groove for mounting the second sealing ring.

5. The low-deformation and long-life water pump according to claim 4, characterized in that: The upper cover, sealing valve plate, middle plate, cylinder body and motor assembly are fixed from top to bottom by installing screws, the output end of the motor assembly is connected to the eccentric swing frame assembly, the eccentric swing frame assembly is sleeved on the lower end of the leather cup, the motor assembly is used to drive the eccentric swing frame assembly to squeeze the leather cup for pumping, the upper cover is provided with a water inlet and a water outlet, the middle plate is provided with a water inlet hole and a water outlet hole, the upper end of the water inlet hole is connected with the water inlet of the upper cover, the upper end of the water outlet hole is connected with the water outlet of the upper cover, the lower ends of the water inlet hole and the water outlet hole are connected with the inner cavity of the leather bowl, an umbrella is provided on the middle plate at the bottom surface of the water inlet hole, and a valve plate is provided on the middle plate above the water outlet hole.

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