Brushless motor type diaphragm booster pump

Abstract

The utility model discloses a brushless motor type diaphragm booster pump, relates to the technical field of diaphragm pumps, and aims to provide a brushless motor type diaphragm booster pump which replaces a traditional brush motor to drive, reduces the size of equipment and lowers noise, and is technically characterized by comprising a pump head part, and the tail end of the pump head part is connected with an end cover part; the pump head part is connected with an end cover part through a second bolt, the tail end of the end cover part is connected with a motor part, a mounting support part is arranged below the motor part, and the motor part comprises a brushless motor. The technical effects are as follows: the motor component is arranged, the brushless motor in the motor component is in transmission connection with the pump head component through the end cover component, and the brushless motor is arranged on the stator through the coil, so that a carbon brush does not need to be used for reversing and transmitting current, and compared with a brush motor, the structure is simpler, the size can be smaller at the same power, and the cost is reduced. And the effects of small size and low noise are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of diaphragm pumps, in particular to a brushless motor type diaphragm booster pump. Background Art

[0002] A diaphragm booster pump is a common fluid conveying device. A motor drives the diaphragm inside the pump head in reciprocating motion through a drive mechanism. When the diaphragm moves backward, the volume of the pump chamber increases, creating negative pressure, which draws liquid into the chamber through the inlet check valve. When the diaphragm moves forward, the volume of the pump chamber decreases, increasing pressure, and the liquid is expelled through the outlet check valve. This reciprocating cycle continuously boosts and delivers the liquid. Furthermore, the drive components do not come into contact with the liquid during this process, preventing contamination. This pump is commonly used in water purification equipment.

[0003] The driving motors of existing diaphragm booster pumps are all brushed motors. The commutation carbon brushes in brushed motors directly affect the life cycle of the motor, and when the carbon brushes and the commutator alternate direction, there will be inevitable electromagnetic noise. With the strong demand for large-flow diaphragm booster pumps in the domestic and commercial water purification markets, the small volume and mass, low noise value and longer working cycle of brushless motor diaphragm booster pumps will be widely used in diaphragm booster pumps for water purifiers, and the use effect will be better. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a brushless motor-type diaphragm booster pump which replaces the traditional brushed motor drive, reduces the size of the equipment and reduces the noise.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a brushless motor diaphragm booster pump, comprising a pump head component, the tail end of the pump head component is connected to an end cover component, the pump head component is connected to the end cover component by a second bolt, the tail end of the end cover component is connected to a motor component, a mounting bracket component is provided under the motor component, the motor component comprises a brushless motor, a power interface is provided on the side of the brushless motor, a first connecting ear is provided on the side of the brushless motor, a first threaded hole is provided in the first connecting ear, a first bolt connected to the end cover component is provided in the first threaded hole, a plastic sealing cavity for wrapping the outer coil is provided in the brushless motor, and a bearing connected to the end cover component is provided on the output shaft of the brushless motor.

[0006] Preferably, the end cover component includes an end cover body that is fitted with the brushless motor, and the side of the end cover body is provided with a second connecting ear corresponding to the position of the first connecting ear, and the second connecting ear is provided with a second threaded hole that is connected to the first bolt, and five eccentric high and low wheel chambers are opened in the end cover body, and the position of the end cover body corresponding to the pump head component is provided with a third threaded hole connected to the second bolt.

[0007] Preferably, a gasket is sleeved on the first bolt and abuts against the first connecting lug, a limiting hole is formed in the side of the first bolt corresponding to the second connecting lug, and a limiting rod is inserted into the limiting hole.

[0008] Preferably, the pump head component comprises a rear pump body abutting against the end cover body and a front pump body abutting against the rear pump body, the rear pump body is internally provided with a fourth threaded hole connected with a second bolt, the second bolt is arranged through the front pump body, a diaphragm chamber corresponding to the position of the eccentric height and low wheel chamber is arranged between the rear pump body and the front pump body, and the two sides of the front pump body are provided with a water inlet and a water outlet in communication with the diaphragm chamber.

[0009] Preferably, a pressure relief valve in communication with the diaphragm chamber is arranged on the front pump body.

[0010] Preferably, the mounting bracket component comprises a bracket body arranged below the brushless motor, a third bolt connected with the pump head component is arranged below the bracket body, and mounting bolts for mounting and fixing are arranged at the four corners of the bracket body.

[0011] Preferably, a damping washer is sleeved on the side of the mounting bolt, and the damping washer is arranged between the bracket body and the mounting position.

[0012] Preferably, a clamping groove is formed in one end of the bracket body, a hoop sleeved on the bracket body and the brushless motor is arranged in the clamping groove, and a fastener for tightening is arranged on the side of the hoop.

[0013] Compared with the prior art, the utility model provides a brushless motor type diaphragm booster pump with the following beneficial effects:

[0014] 1、Through setting motor component, the brushless motor in motor component is transmission connection through end cover component and pump head component, and the brushless motor utilizes the mode that the coil is arranged on the stator, so that the carbon brush is not needed for commutation and transmission current, and compared with the brush motor structure, the same power volume can be smaller, small volume and low noise effect are realized, in addition, the coil in brushless motor utilizes plastic package cavity protection, on one hand, insulation effect can be improved, on the other hand, the resin heat conduction efficiency used for plastic package is better than air, can better conduct the heat of coil work.

[0015] 2、Through setting end cover component and pump head component, five eccentric height and low wheel chambers are formed in end cover component, and five corresponding diaphragm chambers are formed in pump head component, five eccentric height and low wheel chambers drive diaphragm chamber to work alternately and reciprocatingly when working, diaphragm chamber sucks liquid through water inlet, and then liquid is discharged through water outlet, and the setting mode of five chambers can greatly improve the pressure and efficiency of liquid delivery, and the driving power of motor component can be better utilized. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0017] Figure 2 This is a three-dimensional schematic diagram of the motor components of the utility model;

[0018] Figure 3 This is a three-dimensional schematic diagram of the pump head component of the utility model;

[0019] Figure 4 This is a three-dimensional schematic diagram of the mounting bracket component of the utility model.

[0020] In the figure: 1. Pump head component; 101. Rear pump body; 102. Fourth threaded hole; 103. Diaphragm chamber; 104. Front pump body; 105. Water inlet; 106. Water outlet; 2. Motor component; 201. Brushless motor; 202. First connecting ear; 203. First threaded hole; 204. Plastic sealing chamber; 205. Bearing; 3. End cover component; 301. End cover body; 302. Eccentric high and low wheel chamber; 3 03. Third threaded hole; 304. Second connecting ear; 305. Second threaded hole; 4. Power interface; 5. Mounting bracket component; 501. Bracket body; 502. Third bolt; 503. Mounting bolt; 504. Shock-absorbing washer; 505. Snap-in groove; 6. First bolt; 7. Gasket; 8. Limiting hole; 9. Limiting rod; 10. Second bolt; 11. Pressure relief valve; 12. Hoop; 13. Fastener. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1-4 A brushless motor diaphragm booster pump comprises a pump head component 1, the tail end of the pump head component 1 is connected to the end cover component 3, the pump head component 1 is connected to the end cover component 3 by a second bolt 10, the tail end of the end cover component 3 is connected to the motor component 2, a mounting bracket component 5 is provided under the motor component 2, the motor component 2 comprises a brushless motor 201, a power interface 4 is provided on the side of the brushless motor 201, a first connecting ear 202 is provided on the side of the brushless motor 201, a first threaded hole 203 is opened in the first connecting ear 202, a first bolt 6 connected to the end cover component 3 is provided in the first threaded hole 203, a plastic sealing cavity 204 for wrapping the outer coil is provided in the brushless motor 201, and a bearing 205 connected to the end cover component 3 is provided on the output shaft of the brushless motor 201;

[0023] In the present invention, a motor component 2 is provided, and a brushless motor 201 in the motor component 2 is connected to the pump head component 1 through an end cover component 3. The brushless motor 201 uses a coil arranged on a stator, so that there is no need to use carbon brushes for commutation and current transmission. Compared with a brushed motor, the structure is simpler, and the volume can be made smaller for the same power, achieving the effect of small volume and low noise. In addition, the coil in the brushless motor 201 is protected by a plastic sealing cavity 204, which can improve the insulation effect on the one hand, and on the other hand, the thermal conductivity of the resin used for plastic sealing is better than that of air, which can better conduct the heat of the coil when it is working.

[0024] The end cover component 3 includes an end cover body 301 that fits with the brushless motor 201. The side of the end cover body 301 is provided with a second connecting ear 304 corresponding to the position of the first connecting ear 202. The second connecting ear 304 is provided with a second threaded hole 305 that is connected to the first bolt 6. Five eccentric high and low wheel chambers 302 are opened in the end cover body 301. The position of the end cover body 301 corresponding to the pump head component 1 is provided with a third threaded hole 303 connected to the second bolt 10. The pump head component 1 includes The rear pump body 101 is fitted with the end cover 301, and the front pump body 104 is fitted with the rear pump body 101. A fourth threaded hole 102 for connecting the second bolt 10 is opened in the rear pump body 101. The second bolt 10 is set through the front pump body 104. A diaphragm chamber 103 corresponding to the position of the eccentric high and low wheel chamber 302 is provided between the rear pump body 101 and the front pump body 104. A water inlet 105 and a water outlet 106 connected to the diaphragm chamber 103 are provided on both sides of the front pump body 104.

[0025] By setting the end cover component 3 and the pump head component 1, five eccentric high and low wheel chambers 302 are opened in the end cover component 3, and five corresponding diaphragm chambers 103 are opened in the pump head component 1. During operation, the five eccentric high and low wheel chambers 302 drive the diaphragm chamber 103 to work alternately and reciprocatingly. The diaphragm chamber 103 sucks the liquid through the water inlet 105 and then discharges the liquid through the water outlet 106. The arrangement of the five chambers can greatly improve the pressure and efficiency of liquid delivery, better utilize the driving power of the motor component 2, and reduce the fluctuation during liquid delivery, making the delivery process more stable and less vibrating.

[0026] A gasket 7 is sleeved on the first bolt 6 and fits in place with the first connecting ear 202. A limiting hole 8 is formed on the side of the first bolt 6 corresponding to the second connecting ear 304. A limiting rod 9 connected to the limiting hole 8 is inserted into the second connecting ear 304.

[0027] By setting the limiting hole 8 and the limiting rod 9, when the first bolt 6 connects the first connecting ear 202 and the second connecting ear 304 through the first threaded hole 203 and the second threaded hole 305, the limiting rod 9 can be passed through the second connecting ear 304 and inserted into the limiting hole 8. The limiting rod 9 is used to limit the rotation of the first bolt 6 to prevent the first thread from loosening due to the vibration of the motor component 2, thereby ensuring the stability and firmness of the connection between the motor component 2 and the end cover component 3.

[0028] The front pump body 104 is provided with a pressure relief valve 11 which is in communication with the diaphragm chamber 103;

[0029] By setting up a pressure relief valve 11, the pressure relief valve 11 is connected to the diaphragm chamber 103 in the front pump body 104 and opens one-way to the outside. When the pressure in the diaphragm chamber 103 exceeds the bearing range of the pressure relief valve 11, the pressure relief valve 11 will open and discharge the liquid that exceeds the pressure to prevent the over-pressure liquid from damaging the components in the diaphragm chamber 103.

[0030] The mounting bracket component 5 includes a bracket body 501 disposed under the brushless motor 201. A third bolt 502 connected to the pump head component 1 is provided under the bracket body 501. Mounting bolts 503 for mounting and fixing are provided at the four corners of the bracket body 501. Shock-absorbing washers 504 are provided on the sides of the mounting bolts 503. The shock-absorbing washers 504 are spaced between the bracket body 501 and the mounting position.

[0031] By setting up the bracket body 501 and the shock-absorbing washer 504, the bracket body 501 can support the motor component 2, and then use the third bolt 502 to fix it to the installation position. At the same time, the bracket body 501 itself has a certain elasticity, which can absorb and buffer the vibration of the motor component 2 during operation, and the shock-absorbing washer 504 can be spaced between the bracket body 501 and the installation position to further reduce the transmission of vibration and ensure the stable operation of the motor component 2 and the pump head component 1.

[0032] One end of the bracket body 501 is provided with a snap-fitting groove 505, in which a band 12 is provided for sleeve-fitting the bracket body 501 and the brushless motor 201, and a fastener 13 for tightening is provided on the side of the band 12;

[0033] By providing the strap 12 and the fastener 13, the strap 12 can be sleeved on the outside of the motor component 2 and connected to the bracket body 501 through the snap-in groove 505, so that the motor component 2 can be tightly connected to the bracket body 501, and there is no need to open bolt holes on the motor component 2, thereby effectively ensuring the safety and stability of the motor component 2.

[0034] Working principle: During operation, the brushless motor 201 drives the eccentric high and low wheel located in the eccentric high and low wheel chamber 302 to rotate through the bearing 205, and the eccentric high and low wheel is used to drive the rubber diaphragm in the diaphragm chamber 103 to perform reciprocating motion, so that it sucks the liquid through the water inlet 105 and then discharges it from the water outlet 106. The brushless motor 201 is used to replace the traditional brush motor to achieve high power and low noise effects.

[0035] The above are only specific embodiments of the present invention, but the technical features of the present invention are not limited thereto. Any simple changes, equivalent substitutions, or modifications based on the present invention that solve essentially the same technical problems and achieve essentially the same technical effects are included within the scope of protection of the present invention.

Claims

1. A brushless motor-type diaphragm booster pump, comprising a pump head component (1), characterized in that: The tail end of the pump head component (1) is connected to the end cover component (3), the pump head component (1) is connected to the end cover component (3) via a second bolt (10), the tail end of the end cover component (3) is connected to the motor component (2), a mounting bracket component (5) is provided under the motor component (2), the motor component (2) comprises a brushless motor (201), a power interface (4) is provided on the side of the brushless motor (201), a first connecting ear (202) is provided on the side of the brushless motor (201), a first threaded hole (203) is provided in the first connecting ear (202), a first bolt (6) connected to the end cover component (3) is provided in the first threaded hole (203), a plastic sealing cavity (204) for wrapping an outer coil is provided in the brushless motor (201), and a bearing (205) connected to the end cover component (3) is provided on the output shaft of the brushless motor (201).

2. A brushless motor-type diaphragm booster pump according to claim 1, characterized in that: The end cover component (3) comprises an end cover body (301) fitted with the brushless motor (201); a second connecting ear (304) corresponding to the position of the first connecting ear (202) is provided on a side surface of the end cover body (301); a second threaded hole (305) connected to the first bolt (6) is provided in the second connecting ear (304); five eccentric high and low wheel chambers (302) are provided in the end cover body (301); and a third threaded hole (303) connected to the second bolt (10) is provided in a position corresponding to the pump head component (1) in the end cover body (301).

3. The brushless motor diaphragm booster pump according to claim 2, characterized in that: A gasket (7) is sleeved on the first bolt (6) and fits with the first connecting ear (202). A limiting hole (8) is provided on the side of the first bolt (6) corresponding to the second connecting ear (304). A limiting rod (9) connected to the limiting hole (8) is inserted into the second connecting ear (304).

4. The brushless motor diaphragm booster pump according to claim 2, characterized in that: The pump head component (1) comprises a rear pump body (101) fitted with the end cover body (301), and a front pump body (104) fitted with the rear pump body (101); a fourth threaded hole (102) for connecting to a second bolt (10) is provided in the rear pump body (101); the second bolt (10) is arranged to pass through the front pump body (104); a diaphragm chamber (103) is provided between the rear pump body (101) and the front pump body (104), the position of which corresponds to the position of the eccentric high and low wheel chamber (302); and a water inlet (105) and a water outlet (106) in communication with the diaphragm chamber (103) are provided on both sides of the front pump body (104).

5. The brushless motor diaphragm booster pump according to claim 4, characterized in that: The front pump body (104) is provided with a pressure relief valve (11) in communication with the diaphragm chamber (103).

6. The brushless motor diaphragm booster pump according to claim 1, characterized in that: The mounting bracket component (5) comprises a bracket body (501) provided under the brushless motor (201), a third bolt (502) connected to the pump head component (1) being provided under the bracket body (501), and mounting bolts (503) for mounting and fixing are provided at the four corners of the bracket body (501).

7. The brushless motor diaphragm booster pump according to claim 6, characterized in that: A shock-absorbing washer (504) is sleeved on the side surface of the mounting bolt (503), and the shock-absorbing washer (504) is spaced between the bracket body (501) and the mounting position.

8. The brushless motor diaphragm booster pump according to claim 6, characterized in that: One end of the bracket body (501) is provided with a snap-fitting groove (505), a band (12) for sleeve-fitting the bracket body (501) and the brushless motor (201) is provided in the snap-fitting groove (505), and a fastener (13) for tightening is provided on the side of the band (12).

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