Vibration damping diaphragm pump driven by motor with four or more poles

Abstract

A damping diaphragm pump driven by a motor with four or more poles comprises a multi-pole motor and a multi-cavity diaphragm pump head, the multi-pole motor is connected with the multi-cavity diaphragm pump head, the multi-cavity diaphragm pump head comprises a fluid chamber, a fluid chamber support and a motor front cover, the fluid chamber is provided with a liquid inlet channel and a liquid outlet channel, the fluid chamber support is provided with a diaphragm chamber, and the motor front cover is connected with the diaphragm chamber. A water inlet cavity and a water outlet cavity are respectively arranged on the diaphragm chamber, a discharge valve is arranged at the water outlet cavity, a diaphragm is arranged between the fluid chamber support and the diaphragm chamber, the fluid chamber support, the diaphragm and the diaphragm chamber divide the space into a plurality of compression cavities, each compression cavity is respectively communicated with the water inlet cavity and the water outlet cavity, and a suction valve and a piston are respectively arranged in each compression cavity. A piston frame is movably installed between the fluid chamber support and the motor front cover, the piston penetrates through the diaphragm to be fixed to the piston frame, the piston frame is connected with a rotating shaft of the multi-pole motor through a driving piece, and the multi-pole motor drives the piston frame to do reciprocating motion through the driving piece.

Description

Technical Field

[0001] The utility model relates to the field of diaphragm pumps, in particular to a vibration-damping diaphragm pump driven by a quadrupole or higher motor. Background Art

[0002] The basic working principle of the diaphragm pump is that the rotation of the motor drives the rotation of the eccentric wheel, which converts the rotation into the up and down movement of the upper piston head of the piston rack, thereby realizing the suction and discharge action of the compression chamber. Each compression will cause a pulse vibration of the water flow, so that the flow rate of the water flow changes periodically and it is impossible to form a uniform liquid discharge. At the same time, the pulse vibration of the water flow will cause certain damage to the liquid discharge pipeline.

[0003] The change of motor speed in a single cycle will make the working cycle of pistons with equal angles present different suction and discharge times. Theoretically, the time used for equal angles should be the same, so the pulse waveform of water flow is also the same. In fact, because the speed of the motor is uneven in a single cycle, the amplitude of the waveform of the water flow pulse is the same, but the cycle is different, so there is an inconsistent waveform, which causes serious vibration of the pipeline and affects the noise. Utility Model Content

[0004] In view of the technical problems that the existing diaphragm pumps cannot form uniform liquid discharge, the pulse vibration will cause certain damage to the liquid discharge pipeline and the noise is high during use.

[0005] In order to solve the above technical problems, the utility model provides a vibration-damping diaphragm pump driven by a four-pole or more motor, including a multi-pole motor and a multi-chamber diaphragm pump head, the multi-pole motor is connected to the multi-chamber diaphragm pump head, the multi-chamber diaphragm pump head includes a fluid chamber, a fluid chamber bracket and a motor front cover, the fluid chamber is provided with a liquid inlet channel and a liquid outlet channel, the fluid chamber bracket is installed with a diaphragm chamber, the diaphragm chamber is respectively provided with a water inlet chamber and a water outlet chamber, the water outlet chamber is installed with a discharge valve, and a diaphragm is installed between the fluid chamber bracket and the diaphragm chamber. The fluid chamber bracket, the diaphragm and the diaphragm chamber divide the space into a plurality of compression chambers, wherein each compression chamber is respectively connected with the water inlet chamber and the water outlet chamber, and each compression chamber is respectively provided with a suction valve and a piston, and a piston rack is movably installed between the fluid chamber bracket and the motor front cover, and the piston is fixed on the piston rack through the diaphragm, and the piston rack is connected with the rotating shaft of the multi-pole motor through a driving member, and the driving assembly includes an eccentric wheel, and the eccentric wheel can push the piston rack in turn, so that the multiple pistons perform reciprocating motion in turn.

[0006] Through the above technical solution, the motor adopts a multi-pole motor to make the motor rotate more evenly, make the water flow pulse more stable, and make the noise smaller. The solution of using multiple compression chambers to pump out the liquid flow in sequence makes the pulse vibration of the water flow smaller, makes the flow rate of the water flow more stable, and reduces the damage of the pulse vibration to the water pipe. In addition, the operating noise of the multi-chamber diaphragm pump head is also reduced.

[0007] A preferred technical solution is that the multi-pole motor is a two-brush motor with four or more poles.

[0008] Through the above solution, the magnetic field distribution in the housing of the two-brush motor with four or more poles is more uniform, so that the speed is more uniform when the motor is running. The working cycle of the pump head fluid is affected by the uniformity of the motor.

[0009] A preferred technical solution is that a pressure stabilizing structure is provided on the fluid chamber.

[0010] The above scheme makes the water pressure pumped out by the vibration-damping diaphragm pump driven by a four-pole or higher motor more stable.

[0011] A preferred technical solution is that a through hole is opened on the piston, and a protruding column is arranged on the diaphragm at a position corresponding to the through hole, and the protruding column can be inserted into the through hole, and the protruding column and the inserted through hole have an interference fit.

[0012] The above solution improves the fit and sealing between the piston and the diaphragm.

[0013] A preferred technical solution is that the compression chamber is evenly distributed in a ring shape in the pump head of the multi-chamber diaphragm pump, the water inlet chamber is evenly distributed in a ring shape on the diaphragm chamber, and the water outlet chamber is located in the center of the diaphragm chamber.

[0014] The above scheme makes the spatial layout of the multi-pole motor diaphragm pump more reasonable.

[0015] A preferred technical solution is that the number of the compression chambers is three or more.

[0016] The above scheme makes the spatial layout of the multi-pole motor diaphragm pump more reasonable.

[0017] A preferred technical solution is that the diaphragm is made of soft material, the ribs on the piston are inserted into the diaphragm, and the steps on the diaphragm are inserted into the piston frame.

[0018] The above solution can prevent water leakage caused by poor sealing due to displacement during movement.

[0019] The beneficial effects of the utility model are: making the liquid discharge of the diaphragm pump more stable, reducing the pulse vibration, reducing the damage to the liquid discharge pipeline, and reducing the noise during use as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 This is an explosion diagram of the utility model;

[0023] Figure 3 It is a schematic diagram of the diaphragm chamber structure;

[0024] Figure 4 Schematic diagram of piston structure;

[0025] Figure 5 is a schematic diagram of the diaphragm structure;

[0026] 1. Multi-pole motor, 2. Multi-chamber diaphragm pump head, 22. Fluid chamber, 221. Liquid inlet channel, 222. Liquid outlet channel, 23. Fluid chamber bracket, 24. Motor front cover, 25. Diaphragm chamber, 251. Water inlet chamber, 252. Water outlet chamber, 26. Discharge valve, 27. Suction valve, 28. Piston, 29. Diaphragm, 30. Piston rack, 31. Eccentric wheel, 32. Pressure stabilizing structure. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the drawings of the specification. In the following description, many specific details are set forth to facilitate a full understanding of the utility model, but the utility model can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0028] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0029] Example 1

[0030] A vibration-damping diaphragm pump driven by a four-pole or more motor, such as Figure 1As shown, it includes a multi-pole motor 1 and a multi-cavity diaphragm pump head 2, the multi-pole motor 1 is connected to the multi-cavity diaphragm pump head 2, and the multi-pole motor 1 provides power for the multi-cavity diaphragm pump head 2 to drive the piston in the multi-cavity diaphragm pump head 2 to reciprocate. The multi-pole motor 1 is preferably a four-pole two-brush motor. This embodiment adopts the four-pole two-brush motor recorded in the patent with announcement number CN219740153U to achieve a more uniform motor speed, thereby making the water flow pulse frequency more uniform. The four-pole two-brush motor has less noise, and can also reduce the overall noise of the vibration-damping diaphragm pump driven by a four-pole or more motor.

[0031] Reference Figures 1-2 The multi-chamber diaphragm pump head 2 is composed of a fluid chamber 22, a fluid chamber bracket 23 and a motor front cover 24. The fluid chamber 22 is provided with a liquid inlet channel 221, a liquid outlet channel 222 and a pressure stabilizing structure 32, wherein the pressure stabilizing structure includes a spring and a pressure stabilizing valve plate, and the pressure stabilizing structure 32 can make the water pressure output by the multi-chamber diaphragm pump head 2 more stable.

[0032] Reference Figures 2-3 The diaphragm chamber 25 is installed on the fluid chamber bracket 23, and the diaphragm chamber 25 is respectively provided with a water inlet chamber 251 and a water outlet chamber 252. A discharge valve 26 is installed at the water outlet chamber 252, and the discharge valve 26 can prevent the pumped liquid from flowing back. The water inlet chamber 251 is evenly distributed on the diaphragm chamber 25 in an annular shape, and the water outlet chamber 252 is located in the center of the diaphragm chamber 25. The flow rate of the pumped liquid is more stable.

[0033] A diaphragm 29 is installed between the fluid chamber bracket 23 and the diaphragm chamber 25. The fluid chamber bracket 23, the diaphragm 29 and the diaphragm chamber 25 divide the space into 6 compression chambers. Each compression chamber is respectively connected to the water inlet chamber 251 and the water outlet chamber 252. A suction valve 27 and a piston 28 are respectively arranged in the compression chamber. The suction valve 27 can prevent the liquid in the compression chamber from flowing back to the water inlet chamber 251. The piston 28 reciprocates to suck the liquid from the water inlet chamber 251 and then pump it out from the water outlet chamber 252.

[0034] Reference Figure 2 and 4 5. A piston rack 30 is movably installed between the fluid chamber bracket 23 and the motor front cover 24. The piston 28 passes through the diaphragm 29 and is fixed on the piston rack 30. The ribs on the piston 28 are inserted into the diaphragm 29, and the steps on the diaphragm 29 are inserted into the piston rack 30. This prevents water leakage due to poor sealing due to displacement during movement. A through hole 281 is provided on the piston 28, and a protruding column 291 is provided on the diaphragm 29 at a position corresponding to the through hole 281. The protruding column 291 can be inserted into the through hole 281, and the protruding column 291 is interference-fitted with the inserted through hole 281. The fit and sealing between the piston 28 and the diaphragm 29 are improved.

[0035] The piston frame 30 is connected to the rotating shaft of the multi-pole motor 1 through a driving component. The driving component includes an eccentric wheel 31. The eccentric wheel 31 can push the piston frame 30 in sequence, so that the multiple pistons 28 can perform reciprocating motion in sequence.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A vibration-damping diaphragm pump driven by a four-pole or higher motor, characterized in that: The invention comprises a multi-pole motor (1) and a multi-chamber diaphragm pump head (2), wherein the multi-pole motor (1) is connected to the multi-chamber diaphragm pump head (2), wherein the multi-chamber diaphragm pump head (2) comprises a fluid chamber (22), a fluid chamber bracket (23) and a motor front cover (24), wherein the fluid chamber (22) is respectively provided with a liquid inlet channel (221) and a liquid outlet channel (222), wherein the fluid chamber bracket (23) is provided with a diaphragm chamber (25), wherein the diaphragm chamber (25) is respectively provided with a water inlet chamber (251) and a water outlet chamber (252), wherein a discharge valve (26) is provided at the water outlet chamber (252), wherein a diaphragm (29) is provided between the fluid chamber bracket (23) and the diaphragm chamber (25), wherein the fluid chamber bracket (23), the diaphragm chamber (25) and the fluid chamber bracket (23) are provided with a diaphragm (29), wherein the fluid chamber bracket (23), the diaphragm chamber (25) and the fluid chamber bracket (23) are provided with a diaphragm (29) and a diaphragm (29 ... The diaphragm (29) and the diaphragm chamber (25) divide the space into a plurality of compression chambers, wherein each compression chamber is respectively connected to the water inlet chamber (251) and the water outlet chamber (252), and each compression chamber is respectively provided with a suction valve (27) and a piston (28). A piston frame (30) is movably installed between the fluid chamber support (23) and the motor front cover (24), and the piston (28) passes through the diaphragm (29) and is fixed on the piston frame (30). The piston frame (30) is connected to the rotating shaft of the multi-pole motor (1) through a driving component, and the driving component includes an eccentric wheel (31), and the eccentric wheel (31) can push the piston frame (30) in turn, thereby causing the plurality of pistons (28) to perform reciprocating motion in turn.

2. A vibration-damping diaphragm pump driven by a four-pole or more motor according to claim 1, characterized in that: The multi-pole motor (1) is a two-brush motor with four or more poles.

3. A vibration-damping diaphragm pump driven by a four-pole or more motor according to claim 2, characterized in that: The multi-pole motor (1) is a four-pole two-brush motor.

4. A vibration-damping diaphragm pump driven by a four-pole or more motor according to claim 1, characterized in that: The fluid chamber (22) is provided with a pressure stabilizing structure (32).

5. A vibration-damping diaphragm pump driven by a four-pole or more motor according to claim 1, characterized in that: The piston (28) is provided with a through hole (281), and the diaphragm (29) is provided with a protruding column (291) at a position corresponding to the through hole (281). The protruding column (291) can be inserted into the through hole (281), and the protruding column (291) is interference-fitted with the inserted through hole (281).

6. A vibration-damping diaphragm pump driven by a four-pole or more motor according to claim 1, characterized in that: The compression chamber is evenly distributed in a ring shape in the pump head (2) of the multi-chamber diaphragm pump, the water inlet chamber (251) is evenly distributed in a ring shape on the diaphragm chamber (25), and the water outlet chamber (252) is located in the middle of the diaphragm chamber (25).

7. A vibration-damping diaphragm pump driven by a four-pole or more motor according to claim 1, characterized in that: The number of the compression chambers is three or more.

8. The vibration-damping diaphragm pump driven by a four-pole or more motor according to claim 1, characterized in that: The diaphragm (29) is made of soft material, the piston (28) has ribs on it and is inserted into the diaphragm (29), and the diaphragm (29) has steps on it and is inserted into the piston frame (30).

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