Low-flow anti-scale water pump

Abstract

The utility model relates to the technical field of water pumps, in particular to a low-flow scale-preventing water pump. A convex shell is arranged on the side, facing a tower-shaped diaphragm body, of the interior of a middle cover; the tower-shaped diaphragm main body comprises a fixed plate fixed between the gas nozzle cover plate and the middle cover, a main cover body fixed on the fixed plate and a sealing sleeve communicated with the main cover body; a one-way valve assembly is arranged between the inner cavity of the convex shell and the inner cavity of the sealing sleeve; a water inlet cavity communicated with the water inlet pipe is formed in the air tap cover plate; an inner cavity of the convex shell is communicated with the water inlet cavity; a middle cover water outlet communicated with the water outlet pipe is formed in the middle cover; and the middle cover water outlet is communicated with the inner cavity of the middle cover. In the drainage structure, a one-way valve of an umbrella nail structure does not need to be arranged between the main cover body and the water outlet pipe, so that drainage is smoother, the risk that water in the water outlet is evaporated to form incrustation to block the water outlet is reduced, and the service life of the water pump is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to water pump technical field, especially low flow scale -resistant water pump. BACKGROUND

[0002] Miniature pump is a kind of miniaturized pump equipment, mainly used in the application scene needing accurate control liquid flow. Its design is usually compact, is convenient for integration into various systems. The structure of the existing miniature pump drives the eccentric motion of the rotating disc by motor, makes the tower type diaphragm main body move, makes the air pressure in the pump body change;When the air pressure in the pump body becomes negative pressure, the umbrella nail of the liquid inlet automatically opens, the umbrella nail of the liquid outlet automatically closes, and the liquid enters the inside of the pump body;When the air pressure in the pump body has negative pressure and becomes positive pressure, the umbrella nail of the liquid inlet automatically closes, the umbrella nail of the liquid outlet automatically opens, and the liquid in the body is output.

[0003] Because water pump uses ordinary domestic water in a period of time without using

[0004] The central umbrella (the umbrella of the water inlet, kept sealing by water immersion) at the position of the water outlet of the water pump and scale are bonded together, so that the water pump does not pump water, causing the failure of the water pump.

[0005] Therefore, it is necessary to further innovate the existing water pump. INVENTION CONTENTS

[0006] The utility model discloses a low flow scale -resistant water pump to solve the technical problems of the prior art.

[0007] To achieve the above object, the utility model adopts the technical scheme that:

[0008] The low flow scale -resistant water pump provided by the utility model, including air nozzle cover, tower type diaphragm main body, middle cover and diaphragm drive assembly for driving the tensile motion of tower type diaphragm main body, be provided with water outlet pipe and water inlet pipe on the air nozzle cover, the inside of middle cover is provided with the convex shell on the side to tower type diaphragm main body, tower type diaphragm main body includes fixed plate between air nozzle cover and middle cover, main cover body fixed on fixed plate and sealing sleeve connected with main cover body, the connecting block is fixed on main cover body, the connecting block is connected on diaphragm drive assembly, the sealing sleeve is covered in the outside of convex shell, the one-way valve assembly is arranged between the inner chamber of convex shell and the inner chamber of sealing sleeve, the water inlet cavity that is connected with water inlet pipe is arranged on the air nozzle cover, the inner chamber of convex shell is connected with water inlet cavity, the middle cover outlet that is connected with water outlet pipe is arranged on middle cover, the middle cover outlet is connected with the inner chamber of middle cover.

[0009] Further, the diaphragm driving assembly comprises a bottom shell and a motor; the inside of the bottom shell is provided with a rotating disc and an eccentric wheel; the eccentric wheel is fixed at the output end of the motor; the eccentric position of the eccentric wheel is rotationally connected with the rotation center of the rotating disc.

[0010] Further, the number of the main cover bodies is equal to the number of the convex housings; the number of the convex housings is at least two; the convex housings are circumferentially distributed in the inner cavity of the middle cover; a gap is arranged between adjacent convex housings; the gap is communicated with the water outlet of the middle cover.

[0011] Further, the number of the convex housings is three.

[0012] Further, the one-way valve assembly is a umbrella nail; the umbrella nail comprises a umbrella head and a umbrella rod fixed on the umbrella head; a limiting convex is arranged on the umbrella rod; the inner cavity of the convex housing is provided with a water inlet of the middle cover and a umbrella nail positioning hole; the diameter of the limiting convex is greater than the diameter of the umbrella nail positioning hole.

[0013] After the umbrella rod passes through the umbrella nail positioning hole and is inserted into the inner cavity of the convex housing, the limiting convex is arranged in the inner cavity of the convex housing, the umbrella head is arranged outside the convex housing, and the water inlet of the middle cover is arranged opposite to the umbrella head.

[0014] Further, the number of the water inlets of the middle cover is three; the water inlets of the middle cover are circumferentially distributed on the convex housings.

[0015] After the above structure is adopted, the beneficial effects of the utility model are as follows: after the diaphragm driving assembly is started, the connecting block is driven to make reciprocating motion, and the air pressure in the inner cavity of the main cover body changes; when the air pressure in the inner cavity of the main cover body decreases, the sealing sleeve further wraps the convex housing to seal the gap between the convex housing and the sealing sleeve; at the same time, the negative pressure of the main cover body makes the one-way valve assembly open, and the gas enters the inner cavity of the main cover body through the water inlet pipe, the water inlet cavity, the convex housing and the one-way valve assembly.

[0016] With the continuous motion of the diaphragm driving assembly, the air pressure in the inner cavity of the main cover body gradually increases, the liquid in the main cover body cannot be discharged reversely from the one-way valve assembly, the main cover body has liquid, and the air pressure continuously increases, so the liquid in the inner cavity of the main cover body is discharged to the inner cavity of the middle cover from the gap between the convex housing and the sealing sleeve, and finally is discharged to the water outlet pipe from the water outlet of the cover, so that a water pumping and discharging process is completed; in the structure, the one-way valve of the umbrella nail structure does not need to be arranged between the water pumping and discharging structure and the water outlet pipe, so that the water pumping and discharging is smoother, the risk that the water scale is formed after the evaporation of the water in the water outlet is reduced to block the water outlet, and the service life of the water pump is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic diagram of the utility model;

[0018] Figure 2 is the first perspective view of the utility model;

[0019] Figure 3 is the second perspective view of the utility model;

[0020] Figure 4 is the structure view of the air nozzle cover plate;

[0021] Figure 5 is the perspective view of the tower type diaphragm body;

[0022] Figure 6 is the partial section view of the tower type diaphragm body;

[0023] Figure 7 is the perspective view of the middle cover;

[0024] Figure 8 is the section view of the connection of the tower type diaphragm body, the middle cover and the one-way valve assembly;

[0025] Figure 9 is the structure view of the one-way valve assembly;

[0026] Explanation of reference signs:

[0027] 1, air nozzle cover plate; 101, water outlet pipe; 102, water inlet pipe; 103, water inlet cavity; 2, sealing gasket;

[0028] 3, tower type diaphragm body; 301, fixed plate; 302, main cover body; 303, connecting block;

[0029] 304, sealing sleeve; 4, rear cover; 5, bottom shell; 6, motor; 7, middle cover;

[0030] 701, middle cover water outlet; 702, convex shell; 70201, middle cover water inlet;

[0031] 70202, umbrella nail positioning hole; 8, rotating disc; 9, eccentric wheel; 10, one-way valve assembly;

[0032] 1001, umbrella rod; 1002, limiting convex; 1003, umbrella head. DETAILED DESCRIPTION

[0033] The utility model will be further explained in connection with the drawings.

[0034] As Figures 1 to 9The utility model discloses a low flow scale -inhibiting water pump, including air nozzle cover plate 1, tower type diaphragm main part 3, middle cover 7 and be used for driving tower type diaphragm main part 3 to do the diaphragm drive assembly of stretching movement, be provided with water outlet pipe 101 and water inlet pipe 102 on air nozzle cover plate 1, the inside of middle cover 7 is provided with convex shell 702 on the side to tower type diaphragm main part 3, tower type diaphragm main part 3 includes the fixed plate 301 of being fixed between air nozzle cover plate 1 and middle cover 7, the main cover body 302 of being fixed on fixed plate 301 and the sealing sleeve 304 of being connected with main cover body 302, be fixed on main cover body 302 and be connected block 303, be connected in diaphragm drive assembly on connected block 303, the sealing sleeve 304 is covered in the outside of convex shell 702, be provided with one-way valve assembly 10 between the inner chamber of convex shell 702 and the inner chamber of sealing sleeve 304, be provided with water inlet cavity 103 of being connected with water inlet pipe 102 on air nozzle cover plate 1, the inner chamber of convex shell 702 is connected with water inlet cavity 103, be provided with middle cover water outlet 701 of being connected with water outlet pipe 101 on middle cover 7, the inner chamber of middle cover water outlet 701 is connected with middle cover 7,

[0035] be provided with sealing washer 2 between air nozzle cover plate 1 and middle cover 7, and the hole site is formed in corresponding position of sealing washer 2,

[0036] fixed plate 301, main cover body 302, connected block 303 and sealing sleeve 304 are integrally formed by rubber material, are driven after diaphragm drive assembly starts, connected block 303 does reciprocating motion, and the air pressure of main cover body 302 inner chamber changes.When the reduction of main cover body 302 inner chamber, sealing sleeve 304 is further wrapped fixed on convex shell 702 to make the gap sealing between convex shell 702 and sealing sleeve 304, and the negative pressure of main cover body 302 makes one-way valve assembly 10 open, and gas enters the inner chamber of main cover body 302 through water inlet pipe 102, water inlet cavity 103, convex shell 702 and one-way valve assembly 10,

[0037] with the continuous movement of diaphragm drive assembly, the air pressure of main cover body 302 inner chamber gradually increases, and the liquid in main cover body 302 cannot be discharged reversely from one-way valve assembly 10, main cover body 302 has liquid, and the air pressure continuously increases, therefore the liquid in the inside of main cover body 302 is discharged to the inner chamber of middle cover 7 from the gap between convex shell 702 and sealing sleeve 304, and finally is discharged to water outlet pipe 101 from cover water outlet 701, and completes a pumping process, in the structure, the one-way valve of umbrella nail structure does not need to be arranged between the drainage structure from main cover body 302 to water outlet pipe 101, makes drainage more smooth, reduces the risk that the water of water outlet is evaporated and will form scale and block the water outlet, makes the service life of water pump be guaranteed.

[0038] As a preferred mode of the utility model, the diaphragm drive assembly includes bottom shell 5 and motor 6; The inside of bottom shell 5 is provided with rotating disc 8 and eccentric wheel 9; Eccentric wheel 9 is fixed at the output end of motor 6; The eccentric position of eccentric wheel 9 is rotatably connected with the rotation center of rotating disc 8; Bottom shell 5 is hollow shell structure, is sealed through rear cover 4; Motor 6 drives eccentric wheel 9 to rotate and cooperate rotating disc 8, drags connecting block 303 to make reciprocating motion, so that the air pressure of the inner chamber of main cover body 302 changes.

[0039] As a preferred mode of the utility model, the number of main cover body 302 and the number of convex shell 702 are equal; The number of convex shell 702 is at least two; Convex shell 702 is circumferentially distributed in the inner chamber of middle cover 7; Adjacent convex shell 702 is provided with gap; The gap is communicated with middle cover water outlet 701;

[0040] The water in main cover body 302 is discharged from between convex shell 702 and sealing sleeve 304, enters the inside of gap, and is finally discharged from middle cover water outlet 701; The gap between convex shell 702 can form the flow channel of drainage, and the gap makes the expansion space of sealing sleeve 304, which is convenient for the water in main cover body 302 to be discharged.

[0041] As a preferred mode of the utility model, the number of convex shell 702 is three.

[0042] As a preferred mode of the utility model, one-way valve assembly 10 is umbrella nail; The umbrella nail includes umbrella head 1003 and umbrella stem 1001 fixed on umbrella head 1003; Limiting convex 1002 is arranged on umbrella stem 1001; The inner chamber of convex shell 702 is provided with middle cover water inlet 70201 and umbrella nail positioning hole 70202; The diameter of limiting convex 1002 is greater than the diameter of umbrella nail positioning hole 70202;

[0043] The umbrella stem 1001 is inserted into the inner chamber of convex shell 702 after passing through umbrella nail positioning hole 70202; Limiting convex 1002 is placed in the inner chamber of convex shell 702; Umbrella head 1003 is placed outside convex shell 702; Middle cover water inlet 70201 is arranged opposite umbrella head 1003;

[0044] The umbrella nail is made of rubber material, when the negative pressure is generated inside the main cover body 302, the pressure inside the convex shell body 702 is greater than the pressure inside the main cover body 302, therefore the liquid inside the convex shell body 702 pushes the umbrella head 1003 away from the end surface of the middle cover water inlet 70201 through the middle cover water inlet 70201, the liquid is supplemented from the inside of the convex shell body 702 into the main cover body 302; when the pressure inside the main cover body 302 increases, the umbrella head 1003 is reset and sealed on the middle cover water inlet 70201, finally the liquid inside the main cover body 302 can only be discharged from the gap between the sealing sleeve 304 and the convex shell body 702.

[0045] As a preferred mode of the utility model, the number of the middle cover water inlets 70201 is three; the middle cover water inlets 70201 are circumferentially distributed on the convex shell body 702.

[0046] The above only is the preferred implementation of the utility model, therefore the equivalent change or modification of the structure, features and principle of the utility model patent application range, all are included in the utility model patent application range.

Claims

1. A low-flow-rate anti-scaling water pump, comprising an air nozzle cover plate (1), a tower-shaped diaphragm body (3), a middle cover (7), and a diaphragm drive assembly for driving the tower-shaped diaphragm body (3) to perform a stretching motion; the air nozzle cover plate (1) is provided with an outlet pipe (101) and an inlet pipe (102). Its features are: The inner cover (7) has a convex shell (702) on the side facing the tower-shaped diaphragm body (3); the tower-shaped diaphragm body (3) includes a fixing plate (301) fixed between the air nozzle cover plate (1) and the inner cover (7), a main cover (302) fixed on the fixing plate (301), and a sealing sleeve (304) connected to the main cover (302); a connecting block (303) is fixed on the main cover (302); the connecting block (303) is connected to the diaphragm drive assembly; the sealing sleeve (304) is fitted with... Outside the convex housing (702); a one-way valve assembly (10) is provided between the inner cavity of the convex housing (702) and the inner cavity of the sealing sleeve (304); an inlet cavity (103) connected to the inlet pipe (102) is provided on the air nozzle cover (1); the inner cavity of the convex housing (702) is connected to the inlet cavity (103); a middle cover outlet (701) connected to the outlet pipe (101) is provided on the middle cover (7); the middle cover outlet (701) is connected to the inner cavity of the middle cover (7).

2. The low-flow-rate anti-scaling water pump according to claim 1, characterized in that: The diaphragm drive assembly includes a bottom shell (5) and a motor (6); the bottom shell (5) is provided with a turntable (8) and an eccentric wheel (9); the eccentric wheel (9) is fixed at the output end of the motor (6); the eccentric position of the eccentric wheel (9) is rotatably connected to the rotation center of the turntable (8).

3. The low-flow-rate anti-scaling water pump according to claim 1, characterized in that: The number of main covers (302) is equal to the number of convex shells (702); the number of convex shells (702) is at least two; the convex shells (702) are distributed circumferentially in the inner cavity of the middle cover (7); gaps are provided between adjacent convex shells (702); the gaps are connected to the water outlet (701) of the middle cover.

4. A low-flow-rate anti-scaling water pump according to claim 3, characterized in that: The number of the convex shells (702) is three.

5. A low-flow-rate anti-scaling water pump according to claim 1, characterized in that: The one-way valve assembly (10) is an umbrella pin; the umbrella pin consists of an umbrella head (1003) and an umbrella rod (1001) fixed on the umbrella head (1003); a limiting convex shape (1002) is provided on the umbrella rod (1001); the inner cavity of the convex shell (702) is provided with a middle cover inlet (70201) and an umbrella pin positioning hole (70202); the diameter of the limiting convex shape (1002) is larger than the diameter of the umbrella pin positioning hole (70202); The umbrella rod (1001) passes through the umbrella nail positioning hole (70202) and is inserted into the inner cavity of the convex shell (702); the limiting convex (1002) is placed in the inner cavity of the convex shell (702); the umbrella head (1003) is placed on the outside of the convex shell (702); the middle cover water inlet (70201) is set directly opposite the umbrella head (1003).

6. A low-flow-rate anti-scaling water pump according to claim 5, characterized in that: The number of the middle cover water inlets (70201) is three; the middle cover water inlets (70201) are circumferentially distributed on the convex shell (702).

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