Diaphragm pump with high efficiency

Abstract

The utility model discloses a diaphragm pump with high efficiency. The diaphragm pump comprises a pump body, a diaphragm piece and a diaphragm piece driving device, the diaphragm piece is arranged on the pump body, a pump cavity is defined by the diaphragm piece and the pump body, the diaphragm piece driving device is arranged on the pump body and comprises an electromagnet, a swing arm and a magnet, the swing arm is rotationally connected to the pump body and connected with the diaphragm piece, the magnet is fixed to the swing arm, the electromagnet is provided with a magnetic pole end, and the magnetic pole end and the magnet are oppositely arranged. Wherein the magnetic pole end is provided with an arc-shaped end face, the magnet is provided with an arc-shaped matching face, the arc-shaped matching face and the arc-shaped end face are matched in shape and oppositely arranged at intervals, and when the swing arm rotates, the magnet moves in the extending direction of the arc-shaped end face. According to the diaphragm pump of the structure, driving of the swing arm is faster and more powerful, and therefore the working efficiency of the diaphragm pump can be improved.

Description

Technical Field

[0001] The utility model relates to a pump, in particular to a diaphragm pump with high efficiency. Background Art

[0002] The existing diaphragm pump includes a pump body, a diaphragm and a diaphragm driving device. The diaphragm is arranged on the pump body. The diaphragm and the pump body enclose a pump chamber. The diaphragm driving device includes an electromagnet, a swing arm and a magnet. The swing arm is rotatably arranged on the pump body. The magnet is fixed to the swing arm. The magnetic poles of the electromagnet and the magnet are arranged relative to each other. The electromagnet generates a changing magnetic field. The changing magnetic field drives the magnet to move back and forth, thereby causing the swing arm to rotate back and forth. The swing arm is connected to the diaphragm. When the swing arm rotates, it drives the diaphragm to deform, thereby causing the volume of the pump chamber to change. The diaphragm pump uses the volume change of the pump chamber to achieve fluid suction and discharge. For the diaphragm pump with the above structure, the swing arm needs to make a fast and powerful reciprocating motion to ensure the working efficiency of the diaphragm pump. However, the existing diaphragm pump is still insufficient in driving the swing arm and cannot meet higher requirements. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a high-efficiency diaphragm pump that drives the swing arm more quickly and powerfully, thereby helping to improve the working efficiency of the diaphragm pump.

[0004] According to an embodiment of the utility model, a high-efficiency diaphragm pump includes: a pump body; a diaphragm member, which is arranged on the pump body and enclosed with the pump body to form a pump chamber; a diaphragm member driving device, which is arranged on the pump body, and the diaphragm member driving device includes an electromagnet, a swing arm and a magnet, the swing arm is rotatably connected to the pump body, the swing arm is connected to the diaphragm member, the magnet is fixed to the swing arm, the electromagnet is provided with a magnetic end pole, and the magnetic end pole is arranged opposite to the magnet; wherein, the magnetic end pole has an arc-shaped end face, and the magnet is provided with an arc-shaped mating surface, the arc-shaped mating surface is adapted to the shape of the arc-shaped end face and is arranged opposite to each other at intervals, and when the swing arm rotates, the magnet moves along the extension direction of the arc-shaped end face.

[0005] A high-efficiency diaphragm pump according to an embodiment of the present invention has at least the following beneficial effects: the above-mentioned structure, by arranging an arc-shaped end face at the magnetic extreme end of the electromagnet, and arranging an arc-shaped matching surface with a matching shape at the magnet, compared with the prior art that uses square magnets and square magnetic extreme ends, the effective area of ​​the magnetic field generated by the magnetic extreme ends is wider, the matching distance between the magnetic extreme ends and the magnet can be kept stable, and the problem of the magnetic field being greatly weakened after the magnet deviates from the magnetic extreme ends will not occur, which makes the driving of the magnet more comprehensive and powerful, thereby making the driving of the swing arm faster and more powerful.

[0006] According to some embodiments of the present invention, the magnetic pole end includes a first polarity end and a second polarity end, both of the first polarity end and the second polarity end face the magnet, and both of the first polarity end and the second polarity end are provided with the arc-shaped end surface.

[0007] According to some embodiments of the present invention, when the diaphragm pump is powered off, the left end and the right end of the magnet are opposite to the arcuate end surface of the first polarity end and the arcuate end surface of the second polarity end in a one-to-one correspondence.

[0008] According to some embodiments of the present invention, the arcuate mating surface and the arcuate end surface are arcuate surfaces, and the rotation axis of the swing arm, the center of the arcuate mating surface, and the center of the arcuate end surface are arranged to coincide with each other.

[0009] According to some embodiments of the present invention, one end of the swing arm is bent to form an arc-shaped piece, the arc-shaped piece is adapted to the shape of the arc-shaped end face, the magnet is an arc-shaped magnet adapted to the shape of the arc-shaped piece, and the arc-shaped magnet is fitted and fixed to the arc-shaped piece.

[0010] According to some embodiments of the present invention, the diaphragm and the swing arm are symmetrically arranged in two groups relative to the pump body, and the first polarity end and the second polarity end are correspondingly arranged in two groups. The electromagnet includes an iron core and a coil, and the iron core is E-shaped. The iron core includes a transverse part and three longitudinal parts. One end of the three longitudinal parts is connected to the left, middle and right positions of the transverse part in sequence. The two first polarity ends are respectively arranged at the other end of the longitudinal part on the left and right sides, and the two second polarity ends are arranged on the left and right sides of the other end of the middle longitudinal part. The coil is sleeved on the middle longitudinal part.

[0011] According to some embodiments of the present invention, the pump body is provided with a bottom plate, and the bottom plate is provided with a left support part and a right support part. The left support part and the right support part are arranged one by one on the lower sides of the two longitudinal parts on the left and right ends of the iron core. The left support part and the right support part respectively abut against and support the corresponding longitudinal parts, and the left support part and the right support part are locked together with the corresponding longitudinal parts by threaded fasteners.

[0012] According to some embodiments of the present invention, the pump body is provided with an input chamber, an output chamber and an output hole, the input chamber is connected to the outside, the pump chamber is connected to the input chamber through a first one-way valve, and the pump chamber is connected to the output chamber through a second one-way valve. The first one-way valve is used to limit the fluid to flow from the input chamber to the pump chamber in one direction, and the second one-way valve is used to limit the fluid to flow from the pump chamber to the output chamber in one direction. The output hole is connected to the output chamber, and when the swing arm rotates back and forth, it drives the diaphragm to deform and causes the volume of the pump chamber to change in size.

[0013] According to some embodiments of the present invention, the diaphragm and the swing arm are arranged in two groups symmetrically relative to the pump body, and the pump chamber, the first one-way valve, the output chamber, the second one-way valve and the output hole are arranged in two groups. In each group, the pump chamber independently transports fluid to the output hole in the same group.

[0014] According to some embodiments of the present utility model, the pump body is provided with a pump chamber barrel portion, the pump chamber barrel portion is provided with a barrel cavity with an open opening, the diaphragm member has a sleeve hole, the diaphragm member is sleeved and fixed to the pump chamber barrel portion from the open opening of the barrel cavity of the pump chamber barrel portion through the sleeve hole, the diaphragm member and the barrel cavity together form the pump chamber; the diaphragm member is provided with a peripheral wall and a bottom wall, the peripheral wall and the bottom wall together form the sleeve hole, and the bottom wall is fixedly connected to the swing arm.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0017] Figure 1 A three-dimensional schematic diagram of an embodiment of the utility model;

[0018] Figure 2 This is a three-dimensional schematic diagram of an embodiment of the utility model with part of the housing removed;

[0019] Figure 3 for Figure 2 An exploded schematic diagram of the structure shown;

[0020] Figure 4 for Figure 2 Top view of the structure shown.

[0021] Reference numerals:

[0022] Pump body 100, bottom plate 110, left support portion 120, right support portion 130, stud 140, support plate 150, input chamber 160, output chamber 170, output hole 180, pump chamber barrel 190;

[0023] Diaphragm 200, peripheral wall 210, bottom wall 220;

[0024] Diaphragm driving device 300, electromagnet 310, swing arm 320, magnet 330, magnetic pole end 311, arcuate end surface 312, arcuate mating surface 331, first polarity end 313, second polarity end 314, arcuate piece 321, iron core 315, coil 316, transverse portion 317, longitudinal portion 318;

[0025] Threaded fastener 400. DETAILED DESCRIPTION

[0026] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of this utility model, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] Reference Figures 1 to 4A high-efficiency diaphragm pump includes a pump body 100, a diaphragm 200, and a diaphragm driving device 300. The diaphragm 200 is disposed in the pump body 100 and encloses the pump body 100 to form a pump chamber. The diaphragm driving device 300 is disposed in the pump body 100 and includes an electromagnet 310, a swing arm 320, and a magnet 330. The swing arm 320 is rotatably connected to the pump body 100 and connected to the diaphragm 200. The magnet 330 is fixed to the swing arm 320. The electromagnet 310 is provided with a magnetic end 311, which is arranged opposite to the magnet 330. The magnetic end 311 has an arcuate end surface 312, and the magnet 330 is provided with an arcuate mating surface 331. The arcuate mating surface 331 is adapted in shape to the arcuate end surface 312 and is spaced apart from each other. When the swing arm 320 rotates, the magnet 330 moves along the extension direction of the arcuate end surface 312.

[0031] The above structure, by providing an arc-shaped end face 312 at the magnetic pole end 311 of the electromagnet 310, and providing an arc-shaped matching surface 331 of a matching shape at the magnet 330, compared with the prior art that uses square magnets and square magnetic poles, the effective area of ​​the magnetic field generated by the magnetic pole end 311 is wider, and the matching distance between the magnetic pole end 311 and the magnet 330 can be kept stable. The problem of the magnetic field being greatly weakened after the magnet 330 deviates from the magnetic pole end 311 will not occur, and the driving of the magnet 330 is more comprehensive and powerful, thereby making the driving of the swing arm 320 faster and more powerful.

[0032] In this embodiment, the magnetic pole end 311 includes a first polarity end 313 and a second polarity end 314. Both the first polarity end 313 and the second polarity end 314 face the magnet 330 and are provided with an arc-shaped end surface 312. This structure, utilizing two polarity ends in conjunction with the magnet 330, provides sufficient driving force and a wider magnetic field area. It is understood that the first polarity end 313 and the second polarity end 314 serve as the north and south ends of the electromagnet.

[0033] In the embodiment, when the diaphragm pump is powered off, the left and right ends of the magnet 330 correspond one-to-one with the arcuate end surface 312 of the first polarity end 313 and the arcuate end surface 312 of the second polarity end 314. With the above structure, the driving range of the magnet 330 is larger.

[0034] In this embodiment, the arcuate mating surface 331 and the arcuate end surface 312 are arcuate surfaces. The rotation axis of the swing arm 320, the center of the arcuate mating surface 331, and the center of the arcuate end surface 312 are arranged to coincide with each other. Therefore, when the swing arm 320 rotates, the magnet 330 can move along the extension direction of the arcuate end surface 312. Of course, the arcuate mating surface 331 and the arcuate end surface 312 are not limited to arcuate surfaces and can also be arcuate surfaces of other shapes, and the specific configuration can be based on actual conditions.

[0035] In the embodiment, one end of the swing arm 320 is bent to form an arc-shaped piece 321. The arc-shaped piece 321 is adapted to the shape of the arc-shaped end surface 312. The magnet 330 is an arc-shaped magnet adapted to the shape of the arc-shaped piece 321 and is fixed to the arc-shaped piece 321. The above structure can facilitate manufacturing and fixing of the magnet 330.

[0036] In the embodiment, the diaphragm 200 and the swing arm 320 are symmetrically arranged in two groups relative to the pump body 100, and the first polarity end 313 and the second polarity end 314 are correspondingly arranged in two groups. The electromagnet 310 includes an iron core 315 and a coil 316. The iron core 315 is E-shaped. The iron core 315 includes a transverse portion 317 and three longitudinal portions 318. One end of the three longitudinal portions 318 is connected to the left, middle and right positions of the transverse portion 317 in sequence. The two first polarity ends 313 are respectively arranged at the other end of the longitudinal portion 318 on the left and right sides, and the two second polarity ends 314 are arranged on the left and right sides of the other end of the middle longitudinal portion 318. The coil 316 is sleeved on the middle longitudinal portion 318. With the above structure, the iron core 315 integrates two groups of first polarity ends 313 and second polarity ends 314, and the structure is compact. The coil 316 is arranged on the middle longitudinal part 318, which can form two groups of magnetic fields, thereby driving the two swing arms 320 to move accordingly.

[0037] In the embodiment, the pump body 100 is provided with a base plate 110, which is provided with a left support portion 120 and a right support portion 130. The left support portion 120 and the right support portion 130 are respectively provided on the lower sides of the two longitudinal portions 318 on the left and right ends of the iron core 315. The left support portion 120 and the right support portion 130 respectively abut and support the corresponding longitudinal portions 318. The left support portion 120 and the right support portion 130 are locked together with the corresponding longitudinal portions 318 by threaded fasteners 400. The above structure is used to fix the iron core 315, which is simple in structure and firmly fixed.

[0038] In this embodiment, the left support portion 120 and the right support portion 130 each include a stud 140 and support plates 150 connected to the front and rear ends of the stud 140. The support plates 150 extend in the front-to-back direction. The threaded fasteners 400 are screws that penetrate the longitudinal portions 318 and are threadedly connected to the corresponding studs 140 to lock the longitudinal portions 318 and the studs 140 together. The above structure provides a simple fixing structure, good structural strength, and ease of implementation.

[0039] In an embodiment, the pump body 100 is provided with an input chamber 160, an output chamber 170 and an output hole 180. The input chamber 160 is connected to the outside, the pump chamber is connected to the input chamber 160 through a first one-way valve, and the pump chamber is connected to the output chamber 170 through a second one-way valve. The first one-way valve is used to limit the fluid to flow from the input chamber 160 to the pump chamber in one direction, and the second one-way valve is used to limit the fluid to flow from the pump chamber to the output chamber 170 in one direction. The output hole 180 is connected to the output chamber 170. When the swing arm 320 rotates back and forth, it drives the diaphragm 200 to deform and causes the volume of the pump chamber to change in size. When the swing arm 320 rotates, the volume of the pump chamber changes by driving the diaphragm 200 to deform. When the volume of the pump chamber changes from small to large, a relatively low pressure can be formed, and the fluid enters from the input chamber 160 and enters the pump chamber after passing through the first one-way valve; when the volume of the pump chamber changes from large to small, a relatively high pressure can be formed, and the fluid in the pump chamber flows to the output chamber 170 through the second one-way valve and is output through the output hole 180.

[0040] In this embodiment, the pump chamber, first one-way valve, output chamber 170, second one-way valve, and output port 180 are provided in two groups. In each group, the pump chamber independently delivers fluid to the output port 180 of the same group. The above structure can form two stable output groups and provide rich functions.

[0041] In the embodiment, the pump body 100 is provided with a pump chamber barrel portion 190, which is provided with a barrel cavity having an opening. The diaphragm member 200 has a sleeve hole. The diaphragm member 200 is sleeved and fixed to the pump chamber barrel portion 190 from the opening of the barrel cavity of the pump chamber barrel portion 190 through the sleeve hole. The diaphragm member 200 and the barrel cavity together form a pump chamber. The diaphragm member 200 is provided with a peripheral wall 210 and a bottom wall 220. The peripheral wall 210 and the bottom wall 220 together form the sleeve hole. The bottom wall 220 is fixedly connected to the swing arm 320. The above structure is used to fix the diaphragm member 200. The fixing structure is simple and easy to install. The connection structure of the diaphragm member 200 is simple and easy to deform.

[0042] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The embodiments of the present invention are described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A high-efficiency diaphragm pump, characterized in that: include: Pump body (100); a diaphragm member (200), disposed on the pump body (100) and enclosed with the pump body (100) to form a pump cavity; A diaphragm driving device (300) is provided on the pump body (100), the diaphragm driving device (300) comprising an electromagnet (310), a swing arm (320) and a magnet (330), the swing arm (320) being rotatably connected to the pump body (100), the swing arm (320) being connected to the diaphragm (200), the magnet (330) being fixed to the swing arm (320), the electromagnet (310) being provided with a magnetic end (311), the magnetic end (311) being arranged opposite to the magnet (330); The magnetic pole end (311) has an arcuate end surface (312), and the magnet (330) is provided with an arcuate matching surface (331). The arcuate matching surface (331) is adapted to the shape of the arcuate end surface (312) and is arranged relative to each other at a distance. When the swing arm (320) rotates, the magnet (330) moves along the extension direction of the arcuate end surface (312).

2. The high-efficiency diaphragm pump according to claim 1, characterized in that: The magnetic pole end (311) comprises a first polarity end (313) and a second polarity end (314), wherein the first polarity end (313) and the second polarity end (314) are both oriented toward the magnet (330), and the first polarity end (313) and the second polarity end (314) are both provided with the arc-shaped end surface (312).

3. The high-efficiency diaphragm pump according to claim 2, characterized in that: When the diaphragm pump is powered off, the left and right ends of the magnet (330) correspond one-to-one to the arcuate end surface (312) of the first polarity end (313) and the arcuate end surface (312) of the second polarity end (314).

4. The high-efficiency diaphragm pump according to claim 1, characterized in that: The arc-shaped matching surface (331) and the arc-shaped end surface (312) are arc surfaces, and the rotation axis of the swing arm (320), the center of the arc-shaped matching surface (331), and the center of the arc-shaped end surface (312) are arranged to coincide with each other.

5. The high-efficiency diaphragm pump according to claim 1, characterized in that: One end of the swing arm (320) is bent to form an arc-shaped piece (321), the arc-shaped piece (321) is adapted to the shape of the arc-shaped end surface (312), the magnet (330) is an arc-shaped magnet adapted to the shape of the arc-shaped piece (321), and the arc-shaped magnet is fitted and fixed to the arc-shaped piece (321).

6. The high-efficiency diaphragm pump according to claim 2, characterized in that: The diaphragm (200) and the swing arm (320) are symmetrically arranged in two groups relative to the pump body (100), and the first polarity end (313) and the second polarity end (314) are correspondingly arranged in two groups. The electromagnet (310) includes an iron core (315) and a coil (316). The iron core (315) is E-shaped. The iron core (315) includes a transverse portion (317) and three longitudinal portions (318). One end of the three longitudinal portions (318) is connected to the left, middle and right positions of the transverse portion (317) in sequence. The two first polarity ends (313) are respectively arranged at the other end of the longitudinal portion (318) on the left and right sides, and the two second polarity ends (314) are arranged on the left and right sides of the other end of the middle longitudinal portion (318). The coil (316) is sleeved on the middle longitudinal portion (318).

7. The high-efficiency diaphragm pump according to claim 6, characterized in that: The pump body (100) is provided with a bottom plate (110), and the bottom plate (110) is provided with a left support portion (120) and a right support portion (130). The left support portion (120) and the right support portion (130) are respectively provided on the lower sides of the two longitudinal portions (318) on the left and right ends of the iron core (315). The left support portion (120) and the right support portion (130) respectively abut against and support the corresponding longitudinal portions (318). The left support portion (120) and the right support portion (130) are locked together with the corresponding longitudinal portions (318) by threaded fasteners (400).

8. The high-efficiency diaphragm pump according to claim 1, characterized in that: The pump body (100) is provided with an input chamber (160), an output chamber (170) and an output hole (180); the input chamber (160) is communicated with the outside; the pump chamber is communicated with the input chamber (160) via a first one-way valve; the pump chamber is communicated with the output chamber (170) via a second one-way valve; the first one-way valve is used to limit the one-way flow of fluid from the input chamber (160) to the pump chamber; the second one-way valve is used to limit the one-way flow of fluid from the pump chamber to the output chamber (170); the output hole (180) is communicated with the output chamber (170); when the swing arm (320) rotates back and forth, it drives the diaphragm (200) to deform and causes the volume of the pump chamber to change in size.

9. The high-efficiency diaphragm pump according to claim 8, characterized in that: The diaphragm (200) and the swing arm (320) are symmetrically arranged in two groups relative to the pump body (100), and the pump chamber, the first one-way valve, the output chamber (170), the second one-way valve and the output hole (180) are arranged in two groups. In each group, the pump chamber independently transports fluid to the output hole (180) of the same group.

10. The high-efficiency diaphragm pump according to claim 8, characterized in that: The pump body (100) is provided with a pump chamber barrel portion (190), and the pump chamber barrel portion (190) is provided with a barrel cavity with an opening. The diaphragm member (200) has a sleeve hole, and the diaphragm member (200) is sleeved and fixed to the pump chamber barrel portion (190) from the opening of the barrel cavity of the pump chamber barrel portion (190) through the sleeve hole. The diaphragm member (200) and the barrel cavity together form the pump chamber; the diaphragm member (200) is provided with a peripheral wall (210) and a bottom wall (220), and the peripheral wall (210) and the bottom wall (220) together form the sleeve hole. The bottom wall (220) and the swing arm (320) are fixedly connected.

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