Swing arm multi-element diaphragm pump

Abstract

The utility model discloses a swing arm multi-element diaphragm pump, and belongs to the technical field of diaphragm pumps. The utility model comprises a shell, an eccentric shaft, a wobble plate and a cavity plate, the cavity plate is fixedly arranged in a second shell, a pressure plate is connected with the cavity plate and compresses a valve diaphragm on the cavity plate, the wobble plate is arranged between the pressure plate and a first shell, the eccentric shaft penetrates through the wobble plate and is sleeved with a second bearing arranged on the pressure plate, a first bearing is sleeved on the eccentric shaft, and a second bearing is sleeved on the first bearing. The wobble plate is provided with a plurality of connecting columns used for driving the valve diaphragm to move up and down. A liquid inlet hole and a liquid outlet hole are formed in the cavity disc, a secondary valve plate and a main valve plate corresponding to the liquid inlet hole and the liquid outlet hole are further mounted on the cavity disc, and a liquid inlet channel and a liquid outlet channel in the second shell are communicated with the liquid inlet hole and the liquid outlet hole respectively. The eccentric shaft is fixed through the double bearings, the independent valve diaphragm design is adopted, so that the valve diaphragm has large deformation performance, the momentum of the pump is effectively improved, and higher working efficiency and longer service life are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of diaphragm pumps, in particular to a swing-arm multi-element diaphragm pump. Background Art

[0002] With the development of industry, diaphragm pumps are widely used in various liquid transportation occasions due to their simple structure, easy maintenance, wide application range and other advantages. However, when the traditional diaphragm pump is working continuously, due to the use of an integral diaphragm, fatigue and wear are easily generated during repeated expansion and contraction, which affects the working efficiency and life of the pump. In addition, the eccentric shaft is only fixed by a single bearing, which will vibrate and wear after a long working time, resulting in an unstable overall structure, and then the discharge flow rate fluctuates greatly. Therefore, it is necessary to improve the existing technology to improve the working performance and durability of the diaphragm pump. Utility Model Content

[0003] The purpose of the utility model is to provide a swing arm multi-element diaphragm pump, aiming to solve the problems of fatigue and wear in the working process caused by the single bearing and integral diaphragm of the existing diaphragm pump in the background technology. To achieve the above purpose, the technical scheme adopted by the utility model is: a swing arm multi-element diaphragm pump, including a first housing, a second housing, an eccentric shaft, a wobble plate and a chamber plate, the chamber plate is fixedly installed in the second housing, the pressure plate is fixedly connected with the chamber plate and presses the valve diaphragm on the chamber plate, the wobble plate is installed between the pressure plate and the first housing, and the eccentric shaft passes through the wobble plate and is sleeved with the second bearing installed on the pressure plate, the first housing is also installed with a first bearing and sleeved on the eccentric shaft, and the wobble plate is installed with a number of connecting columns for driving the valve diaphragm to move up and down; the chamber plate is provided with a liquid inlet hole and a liquid outlet hole, and is also provided with a secondary valve plate and a main valve plate corresponding to the liquid inlet hole and the liquid outlet hole, and the liquid inlet channel and the liquid outlet channel on the second housing are respectively connected with the liquid inlet hole and the liquid outlet hole. This technical solution fixes the eccentric shaft through double bearings, which is more stable and reliable than a single-head bearing. It adopts an independent valve diaphragm design, which makes the valve diaphragm have greater deformation performance, improves the momentum of the pump and prolongs its life.

[0004] Further describing the above scheme, the wobble plate is slidably mounted on the eccentric section of the eccentric shaft through the central sleeve plate. The second bearing adopts a cross roller bearing, which has higher precision and stronger anti-overturning ability, and can ensure that the eccentric shaft works better.

[0005] Furthermore, an oil seal and a retaining spring which are sleeved with the eccentric shaft are installed on the first housing to improve the sealing performance.

[0006] Further description of the above scheme, the center of the second shell is a liquid outlet cavity, the outside of the liquid outlet cavity is a liquid inlet cavity, an inner sealing ring is provided between the liquid outlet cavity and the liquid inlet cavity to abut against the chamber disk; an outer sealing ring is provided outside the liquid outlet cavity to abut against the chamber disk; the liquid inlet channel is connected to the liquid inlet cavity, and the liquid outlet channel is connected to the liquid outlet cavity. The liquid inlet channel and the liquid outlet channel on the second shell are connected to the liquid inlet joint and the liquid outlet joint respectively.

[0007] Furthermore, a mounting seat is fixedly installed in the center of the pressure plate, and the second bearing is installed on the mounting seat.

[0008] Further description of the above scheme, the secondary valve plate and the main valve plate are made of silicone material and are detachably mounted on the chamber plate, and the valve diaphragm is an elastic silicone plate and is evenly distributed on the top of the exchange chamber around the eccentric shaft. The number of liquid inlet holes and liquid outlet holes of a single exchange chamber is at least 2 to better adapt to the inlet and outlet of different powers.

[0009] Compared with the prior art, the utility model adopts double bearings to fix the eccentric shaft, which is more stable and reliable than a single-head bearing; an independent valve diaphragm design is adopted, so that the valve diaphragm has a larger deformation performance, effectively improves the momentum of the pump, and has higher working efficiency and longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 An overall schematic diagram provided for an embodiment of the utility model;

[0011] Figure 2 A schematic diagram of the installation structure provided for an embodiment of the utility model;

[0012] Figure 3 An explosion diagram provided for an embodiment of the utility model;

[0013] Figure 4 An exploded schematic diagram of an eccentric shaft and a wobble plate provided in an embodiment of the utility model;

[0014] Figure 5 An exploded schematic diagram of a second shell and a chamber disk provided in an embodiment of the utility model;

[0015] Figure 6 A schematic diagram of the chamber disk structure provided by an embodiment of the utility model;

[0016] Figure 7 A cross-sectional view provided for an embodiment of the utility model;

[0017] Figure 8 A schematic diagram of the principle of an embodiment of the utility model is provided.

[0018] Among them, the reference numerals in the figure are:

[0019] 1. First housing; 11. First bearing; 12. Oil seal; 13. Circlip; 2. Second housing; 21. Liquid inlet connector; 22. Liquid outlet connector; 23. Outer sealing ring; 24. Inner sealing ring; 25. Liquid inlet passage; 26. Liquid inlet chamber; 3. Eccentric shaft; 31. Sleeve disc; 32. Second bearing; 321. Mounting seat; 33. Eccentric section; 4. Swing disc; 41. Connecting column; 42. Valve diaphragm; 5. Chamber disc; 51. Secondary valve disc; 52. Main valve disc; 53. Liquid inlet hole; 54. Exchange chamber; 55. Liquid outlet chamber; 56. Liquid outlet passage; 57. Liquid outlet hole; 6. Pressure plate. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the relevant drawings. The drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0021] The technical solution of this patent is further described in detail below in conjunction with specific implementation methods.

[0022] See also Figure 1-8 As shown, the utility model provides a swing arm multi-element diaphragm pump, which specifically includes a first housing 1, a second housing 2, an eccentric shaft 3, a swing plate 4 and a chamber plate 5. Figure 7 As shown, the chamber plate 5 is fixedly installed in the second housing 2, the pressure plate 6 is fixedly connected to the chamber plate 5 and presses the valve diaphragm 42 on the chamber plate 5, the swing plate 4 is installed between the pressure plate 6 and the first housing 1, and the eccentric shaft 3 passes through the swing plate 4 and is sleeved with the second bearing 32 installed on the pressure plate 6. The first bearing 11 is sleeved on the eccentric shaft 3, and a plurality of connecting columns 41 are installed on the swing plate 4 to drive the valve diaphragm 42 to move up and down. The chamber plate 5 is provided with a liquid inlet hole 53 and a liquid outlet hole 57, and is also provided with a secondary valve plate 51 and a main valve plate 52 corresponding to the liquid inlet hole 53 and the liquid outlet hole 57. The liquid inlet channel 25 and the liquid outlet channel 56 on the second housing 2 are respectively connected with the liquid inlet hole 53 and the liquid outlet hole 57.

[0023] The wobble plate 4 is slidably mounted on the eccentric section 33 of the eccentric shaft 3 through the central sleeve 31. In this embodiment, the second bearing 32 adopts a cross roller bearing, which has higher precision and stronger anti-overturning ability, and can ensure better operation of the eccentric shaft 3. The first housing 1 is equipped with an oil seal 12 and a retaining spring 13 that are sleeved with the eccentric shaft 3 to improve the sealing performance.

[0024] like Figure 7As shown, the center of the second housing 2 is a liquid outlet chamber 55, and the outer side of the liquid outlet chamber 55 is a liquid inlet chamber 26. An inner sealing ring 24 is provided between the liquid outlet chamber 55 and the liquid inlet chamber 26 to abut against the chamber disc 5. An outer sealing ring 23 is provided on the outer side of the liquid outlet chamber 55 to abut against the chamber disc 5. The liquid inlet channel 25 is connected to the liquid inlet chamber 26, and the liquid outlet channel 56 is connected to the liquid outlet chamber 55. The liquid inlet channel 25 and the liquid outlet channel 56 on the second housing 2 are connected to the liquid inlet joint 21 and the liquid outlet joint 22 respectively. A mounting seat 321 is fixedly installed in the center of the pressure plate 6, and the second bearing 32 is installed on the mounting seat 321. The secondary valve plate 51 and the main valve plate 52 are made of silicone and are detachably installed on the chamber disc 5. The valve diaphragm 42 is an elastic silicone plate and is evenly distributed on the top of the exchange chamber 54 around the eccentric shaft 3. The number of liquid inlet holes 53 and liquid outlet holes 57 of a single exchange chamber 54 is at least 2 to better adapt to liquid inlet and outlet of different powers.

[0025] In order to have a more thorough and comprehensive understanding of the disclosed content of the utility model, the principle thereof is further explained below in combination with the usage method.

[0026] like Figure 8 As shown, when the diaphragm pump is working, the eccentric shaft 3 is connected to the motor, and the motor drives the eccentric shaft 3 to rotate. Since the sleeve disc 31 and the swing disc 4 are slidably mounted on the eccentric section 33, and the sleeve disc 31 is fixedly connected to the valve diaphragm 42 through the connecting column 41, the swing disc 4 can only swing up and down, thereby driving the valve diaphragm 42 to move up and down in the exchange chamber 54. When the valve diaphragm 42 moves downward, the secondary valve disc 51 is closed, the main valve disc 52 is opened, and the liquid is pressed into the liquid outlet chamber 55, and then flows out from the liquid outlet channel 56 of the liquid outlet bin.

[0027] It should be noted that when part of the valve diaphragm 42 moves downward, the other part of the valve diaphragm 42 moves upward. In the exchange chamber 54 where the valve diaphragm 42 moves upward, the secondary valve plate 51 opens, and the corresponding position of the main valve plate 52 is closed, and the liquid flows from the liquid inlet joint 21 and the liquid inlet channel 25 into the liquid inlet chamber 26, and then flows from the liquid inlet chamber 26 into the exchange chamber 54. It should be noted that different areas of the main valve plate 52 will open and close different liquid outlet holes 57 at the same time, and the opening and closing depends on the working state of the valve diaphragm 42 of the exchange chamber 54.

[0028] In summary, the use of this technical solution makes the flow more stable and accurate, the overall operation is smooth and vibration-free, and it has higher working efficiency and longer service life.

[0029] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or there may be a centered element at the same time. On the contrary, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method. The terms "upper end", "lower end", "left side", "right side", "front end", "rear end" and similar expressions used herein are positional relationships with reference to the accompanying drawings.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0031] The above implementation modes are only used to illustrate the present invention, but not to limit the present invention. Ordinary technicians in the relevant technical field can make various changes and deformations without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention. The scope of patent protection of the present invention should be limited by the claims.

Claims

1. A swing arm multi-element diaphragm pump, comprising a first housing (1), a second housing (2), an eccentric shaft (3), a swing plate (4) and a chamber plate (5), characterized in that: The chamber disc (5) is fixedly mounted in the second housing (2); the pressure plate (6) is fixedly connected to the chamber disc (5) and presses the valve diaphragm (42) on the chamber disc (5); the wobble plate (4) is mounted between the pressure plate (6) and the first housing (1); the eccentric shaft (3) passes through the wobble plate (4) and is sleeved with a second bearing (32) mounted on the pressure plate (6); the first housing (1) is also mounted with a first bearing (11) and sleeved on the eccentric shaft (3) The swing plate (4) is provided with a plurality of connecting columns (41) for driving the valve diaphragm (42) to move up and down; the chamber plate (5) is provided with a liquid inlet hole (53) and a liquid outlet hole (57), and is also provided with a secondary valve plate (51) and a main valve plate (52) corresponding to the liquid inlet hole (53) and the liquid outlet hole (57); the liquid inlet channel (25) and the liquid outlet channel (56) on the second shell (2) are respectively connected to the liquid inlet hole (53) and the liquid outlet hole (57).

2. A swing arm multi-element diaphragm pump according to claim 1, characterized in that: The wobble plate (4) is slidably mounted on the eccentric section (33) of the eccentric shaft (3) via a central sleeve plate (31), and the second bearing (32) is a cross roller bearing.

3. A swing arm multi-element diaphragm pump according to claim 1, characterized in that: The first housing (1) is also provided with an oil seal (12) and a retaining spring (13) which are sleeved with the eccentric shaft (3).

4. A swing arm multi-element diaphragm pump according to claim 1, characterized in that: The center of the interior of the second shell (2) is a liquid outlet cavity (55), and the outer side of the liquid outlet cavity (55) is a liquid inlet cavity (26). An inner sealing ring (24) is provided between the liquid outlet cavity (55) and the liquid inlet cavity (26) and is in contact with the chamber disk (5); an outer sealing ring (23) is provided on the outer side of the liquid outlet cavity (55) and is in contact with the chamber disk (5); the liquid inlet channel (25) is in communication with the liquid inlet cavity (26), and the liquid outlet channel (56) is in communication with the liquid outlet cavity (55).

5. The swing arm multi-element diaphragm pump according to claim 1, characterized in that: The liquid inlet channel (25) and the liquid outlet channel (56) on the second shell (2) are respectively connected to the liquid inlet connector (21) and the liquid outlet connector (22).

6. The swing arm multi-element diaphragm pump according to claim 1, characterized in that: A mounting seat (321) is fixedly mounted at the center of the pressure plate (6), and the second bearing (32) is mounted on the mounting seat (321).

7. A swing arm multi-element diaphragm pump according to any one of claims 1 to 6, characterized in that: The secondary valve plate (51) and the main valve plate (52) are made of silicone material and are detachably mounted on the chamber plate (5); the valve diaphragm (42) is an elastic silicone plate and is evenly distributed around the eccentric shaft (3) on the top of the exchange chamber (54).

8. A swing arm multi-element diaphragm pump according to claim 7, characterized in that: The number of the liquid inlet hole (53) and the liquid outlet hole (57) of a single exchange chamber (54) is at least two.

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