Electromagnetically-driven corrosion-resistant vacuum diaphragm pump system

Abstract

The utility model relates to an electromagnetically-driven corrosion-resistant vacuum diaphragm pump system which comprises a shell with a cavity. The electromagnetic driving assembly comprises a driving piece, a driving shaft and an eccentric wheel; a connecting assembly; the number of the pump bodies is two, each pump body comprises a diaphragm, the diaphragm divides the cavity into a first cavity and a closed second cavity, the second cavity is connected with an inlet and an outlet, the driving piece can drive the eccentric wheel to drive the connecting assembly to move in the horizontal direction and drive the diaphragm to be switched between a first state and a second state, and when the diaphragm is in the first state, the diaphragm is in the second state. Gas enters the second cavity from the inlet; when the diaphragms are in the second state, the gas is discharged out of the second cavity from the outlet, the structure compactness of the whole system can be improved, the energy consumption loss of the driving part can be reduced, the two diaphragms are rapidly switched between the first state and the second state, and the size of the second cavity can be rapidly increased or decreased. Therefore, the gas suction and exhaust processes are efficiently completed, and the working efficiency of the whole system is improved.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic diaphragm pump technology, specifically to an electromagnetically driven corrosion-resistant vacuum diaphragm pump system. Background Technology

[0002] In numerous industrial production sectors, such as chemical, pharmaceutical, and electronics industries, the demand for vacuum pumps is increasing. Traditional vacuum pumps have complex structures and numerous transmission components, making them prone to wear and failure during long-term operation. This reduces the reliability and stability of the pump, and also results in high energy consumption and low operating efficiency.

[0003] Therefore, it is necessary to improve the existing technology to overcome the aforementioned defects. Utility Model Content

[0004] In view of this, the present application provides an electromagnetically driven corrosion-resistant vacuum diaphragm pump system to solve at least one problem existing in the prior art, comprising:

[0005] The outer shell has a cavity;

[0006] An electromagnetic drive assembly, disposed within the cavity, is used to provide power and includes a drive component, a drive shaft connected to the drive component, and an eccentric wheel sleeved on the outside of the drive shaft.

[0007] The connecting assembly includes two connectors that are relatively connected to both sides of the eccentric wheel;

[0008] The pump body has two components, each including a diaphragm fixed to a connecting assembly. The diaphragm divides the cavity into a first cavity and a closed second cavity. The diaphragm is composed of a composite of a polytetrafluoroethylene (PTFE) membrane layer and a carbon fiber membrane layer. The PTFE membrane layer is located on the side closer to the second cavity. The electromagnetic drive assembly and the connecting assembly are located in the first cavity. The second cavity is connected to an inlet and an outlet. The electromagnetic drive assembly can drive the eccentric wheel to rotate, thereby moving the connecting assembly in the horizontal direction and causing the diaphragm to switch between a first state and a second state. When the diaphragm is in the first state, the diaphragm is concave, the volume of the second cavity increases, and gas enters the second cavity from the inlet. When the diaphragm is in the second state, the diaphragm is convex, the volume of the second cavity decreases, and gas exits the second cavity from the outlet.

[0009] Optionally, the above-described electromagnetically driven corrosion-resistant vacuum diaphragm pump system further includes a one-way valve diaphragm disposed on the inlet and / or outlet.

[0010] Optionally, in the above-described electromagnetically driven corrosion-resistant vacuum diaphragm pump system, the connecting member includes a connecting rod connected to the eccentric wheel, a docking part that docks with the connecting rod, and a fixing part. The edge of the diaphragm is fixed to the outer shell, and the middle region of the diaphragm is fixed between the fixing part and the docking part.

[0011] Optionally, in the above-mentioned electromagnetically driven corrosion-resistant vacuum diaphragm pump system, the docking part has a groove and the connecting part has an insertion hole;

[0012] The fixing part has a protrusion that matches the groove and an insertion rod that matches the insertion hole. The fixing part is fixed to the mating part through the protrusion and the recess, and the insertion rod is inserted into the insertion hole.

[0013] Optionally, in the above-described electromagnetically driven corrosion-resistant vacuum diaphragm pump system, a sealing element is further provided between the fixed part and the diaphragm.

[0014] Optionally, in the above-described electromagnetically driven corrosion-resistant vacuum diaphragm pump system, the docking portion includes a docking area and an edge area connected to the docking area, wherein the edge area is an arc-shaped surface that is inclined from the first cavity to the second cavity.

[0015] Optionally, the above-described electromagnetically driven corrosion-resistant vacuum diaphragm pump system further includes a first bearing and a second bearing. The first bearing is disposed outside the eccentric wheel, the connecting member is disposed outside the first bearing, and the second bearing is disposed between the housing and the drive shaft.

[0016] Optionally, in the above-described electromagnetically driven corrosion-resistant vacuum diaphragm pump system, the outer casing includes a first housing, a second housing, and a third housing, wherein the first housing and the second housing form the first cavity, and electrical components are disposed within the third housing.

[0017] Optionally, the aforementioned electromagnetically driven corrosion-resistant vacuum diaphragm pump system also has a handle on its housing.

[0018] Compared with the prior art, this application has the following beneficial effects: by setting a driving component, a driving shaft and an eccentric wheel in the cavity, the connecting assembly can connect the eccentric wheel and the two diaphragms. Since the eccentric wheel can drive the two diaphragms to move at the same time, it can not only improve the structural compactness of the whole system, but also reduce the energy consumption of the driving component. The two diaphragms switch quickly between the first state and the second state, so that the volume of the second cavity can be rapidly increased or decreased, thereby efficiently completing the gas intake and exhaust process and improving the working efficiency of the whole system. Moreover, the diaphragm is composed of a composite of polytetrafluoroethylene membrane layer and carbon fiber membrane layer. The polytetrafluoroethylene membrane layer is located on the side close to the second cavity. Even if the diaphragm comes into contact with the gas in the second cavity, it will not be corroded, thus extending the service life of the diaphragm. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the electromagnetically driven corrosion-resistant vacuum diaphragm pump system shown in this embodiment;

[0020] Figure 2 yes Figure 1 A cross-sectional view of an electromagnetically driven corrosion-resistant vacuum diaphragm pump system shown.

[0021] Figure 3 yes Figure 1 A cross-sectional view of the electromagnetically driven corrosion-resistant vacuum diaphragm pump system shown from another direction;

[0022] Figure 4 yes Figure 3 A magnified view of a portion of the image. Attached image description:

[0024] Vacuum diaphragm pump system 1, heat dissipation port 11, handle 12, outer shell 2, first housing 21, second housing 22, third housing 23, electromagnetic drive assembly 3, drive component 31, drive shaft 32, eccentric wheel 33, connecting assembly 4, connector 41, connecting rod 411, through hole 4111, docking part 412, groove 4121, docking area 4122, edge area 4123, fixing part 413, protrusion 4131, through rod 4132, pump body 5, diaphragm 51, first chamber 52, second chamber 53, inlet 54, outlet 55, seal 7, first bearing 8, second bearing 9, electrical assembly 10. Detailed Implementation

[0025] The exemplary embodiments disclosed in this application will now be described in more detail. Numerous specific details are set forth in the following description to provide a more thorough understanding of this application. However, it will be apparent to those skilled in the art that this application can be implemented without one or more of these details. In other instances, to avoid confusion with this application, some technical features well-known in the art have not been described; that is, not all features of actual embodiments are described herein, nor are well-known functions and structures described in detail.

[0026] It should be understood that when an element or layer is referred to as "on," "adjacent to," "connected to," or "coupled to" other elements or layers, it may be directly on, adjacent to, connected to, or coupled to other elements or layers, or there may be intervening elements or layers. Conversely, when an element is referred to as "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc., may be used to describe various elements, components, areas, layers, and / or portions, these elements, components, areas, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, area, layer, or portion from another element, component, area, layer, or portion. Therefore, without departing from the teachings of this application, the first element, component, area, layer, or portion discussed below may be referred to as a second element, component, area, layer, or portion. And the discussion of a second element, component, area, layer, or portion does not imply that the first element, component, area, layer, or portion necessarily exists in this application.

[0027] Spatial relation terms such as “below,” “under,” “below,” “under,” “above,” “above,” etc., are used here for convenience to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms are intended to also include different orientations of devices in use and operation.

[0028] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this application. When used herein, the singular forms “a,” “an,” and “ / the” are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “compose” and / or “comprising,” when used in this specification, identify the presence of features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups. When used herein, the term “and / or” includes any and all combinations of the associated listed items.

[0029] To fully understand this application, detailed steps and structures will be presented in the following description to illustrate the technical solution of this application. Preferred embodiments of this application are described in detail below; however, in addition to these detailed descriptions, this application may have other implementation methods.

[0030] Please refer to Figures 1-4 As shown in the preferred embodiment of this application, an electromagnetically driven corrosion-resistant vacuum diaphragm pump system 1 (hereinafter referred to as the vacuum diaphragm pump system) is used for exhaust. The vacuum diaphragm pump system 1 includes a housing 2 with a cavity, an electromagnetic drive assembly 3 disposed within the cavity, a connecting assembly 4, and a pump body 5. The electromagnetic drive assembly 3 provides power and includes a drive member 31, a drive shaft 32 connected to the drive member 31, and an eccentric wheel 33 sleeved on the outside of the drive shaft 32. The connecting assembly 4 includes two connecting members 41 connected to the two sides of the eccentric wheel 33. Two pump bodies 5 are provided, each pump body 5 including a diaphragm 51 fixed on the connecting assembly 4. The diaphragm 51 divides the cavity into a first cavity 52 and a closed second cavity 53. The electromagnetic drive assembly 3 and the connecting assembly 4 are located in the first cavity 52. ​​The second cavity 53 is connected to an inlet 54 and an outlet 55. The electromagnetic drive assembly 3 can drive the eccentric wheel 33 to rotate, thereby moving the connecting assembly 4 in the horizontal direction, thereby causing the diaphragm 51 to switch between a first state and a second state. When the diaphragm 51 is in the first state, the diaphragm 51 is concave, the volume of the second cavity 53 increases, and gas enters the second cavity 53 from the inlet 54. When the diaphragm 51 is in the second state, the diaphragm 51 protrudes, the volume of the second cavity 53 decreases, and gas exits the second cavity 53 from the outlet 55.

[0031] Understandably, the drive component 31 drives the eccentric wheel 33 to rotate, thereby moving the connecting assembly 4 in the horizontal direction, realizing the rapid switching of the diaphragm 51 between the first and second states. The volume of the second chamber 53 rapidly increases and decreases, efficiently completing the intake and exhaust of gas, improving the pumping efficiency. The electromagnetic drive provides stable power output, ensuring the repeatability and consistency of the diaphragm 51's movement, and reducing energy loss.

[0032] Understandably, the diaphragm 51 divides the cavity into a first cavity 52 and a closed second cavity 53. The electromagnetic drive assembly 3 and the connecting assembly 4 are located in the first cavity 52 and isolated from the gas being pumped. When dealing with corrosive gases, the components in the first cavity 52 can be effectively protected from corrosion, thus extending the service life of the entire system.

[0033] Understandably, the rotational motion of the drive unit 31 can be directly converted into the linear motion of the diaphragm 51 connected to the drive unit through the eccentric wheel 33 and the connecting member 41, without the need for other transmission structures, reducing volume and weight, and making the entire system structure compact.

[0034] Understandably, in this embodiment, the driving component 31 is an electromagnetic driving component, whose dynamic characteristics can reduce the impact of mechanical vibration, improve operational stability, and reduce noise.

[0035] Understandably, there are two pump bodies 5, and the two diaphragms 51 can be driven simultaneously by the eccentric wheel 33, so that the two pump bodies 5 can work at the same time and improve working efficiency.

[0036] It should be noted that in this embodiment, the diaphragm 51 is composed of a composite of a polytetrafluoroethylene (PTFE) membrane layer and a carbon fiber membrane layer, with the PTFE membrane layer located on the side closest to the second cavity. This arrangement has several advantages. Firstly, because PTFE has good chemical corrosion resistance, even if the gas in the second cavity comes into contact with the PTFE layer of the diaphragm, it will not be corroded, thus extending the diaphragm's service life and reducing the need for diaphragm 51 replacement. Secondly, the addition of carbon fiber improves the strength and rigidity of the diaphragm 51, allowing it to maintain good shape and performance during long-term operation. Furthermore, the composite PTFE and carbon fiber diaphragm 51 possesses good elasticity and flexibility, capable of withstanding repeated concave and convex deformations, ensuring that the diaphragm 51 will not break or lose elasticity during long-term use, thus guaranteeing stable pump operation.

[0037] In an optional embodiment, the vacuum diaphragm pump system 1 further includes a one-way valve diaphragm disposed on the inlet 54 and / or outlet 55 to prevent gas backflow, ensure that gas can only enter the second chamber 53 from the inlet 54 and exit from the outlet 55, and the one-way valve diaphragm fits tightly with the inlet and outlet, which can also enhance the sealing at the inlet 54 and outlet 55, reduce the possibility of gas leakage, and further improve the sealing performance and working efficiency of the pump body 5.

[0038] In an optional embodiment, the connector 41 includes a connecting rod 411 connected to the eccentric wheel 33, a mating portion 412 mating with the connecting rod 411, and a fixing portion 413. The edge of the diaphragm 51 is fixed to the outer shell 2, and the middle region of the diaphragm 51 is fixed between the fixing portion 413 and the mating portion 412.

[0039] Specifically, the docking part 412 has a groove 4121, and the connecting rod 411 has an insertion hole 4111; the fixing part 413 has a protrusion 4131 adapted to the groove 4121 and an insertion rod 4132 adapted to the insertion hole 4111. The fixing part 413 is fixed to the docking part 412 through the protrusion 4131 and the groove, and the insertion rod 4132 is inserted into the insertion hole 4111.

[0040] Understandably, by fixing the middle area of ​​the diaphragm 51 between the docking part 412 and the fixing part 413, it can be ensured that the diaphragm 51 will not shift or loosen during movement, thereby providing installation stability and reliability of the diaphragm 51; while the connecting rod 411 connects the eccentric wheel 33 to the docking part 412, which can ensure the integrity and strength of the connecting assembly 4, and can withstand the tension and pressure generated by the diaphragm 51 during movement, thereby improving the reliability of the connecting assembly 4.

[0041] Understandably, by adapting the groove 4121 of the mating part 412 to the protrusion 4131 of the fixing part 413, and by cooperating the insertion hole 4111 with the insertion rod 4132, the connection between the fixing part 413 and the mating part 412 can be made tighter and more secure, thereby improving the stability of the fixing part 413, the connecting rod 411 and the mating part 412 and preventing them from loosening. This design also facilitates the assembly and disassembly of each component, making the maintenance and replacement of the diaphragm 51 more convenient and quick, and reducing the cost and time of maintenance.

[0042] Furthermore, a sealing element 7 is provided between the fixing part 413 and the diaphragm 51, which further enhances the sealing performance between the diaphragm 51 and the fixing part 413, effectively preventing gas leakage from the second chamber 53 into the first chamber 52, and can also protect the diaphragm 51 to a certain extent, reducing friction and wear between the diaphragm 51 and the fixing part 413, and extending the service life of the diaphragm 51.

[0043] In an optional embodiment, the docking portion 412 includes a docking area 4122 and an edge area 4123 connected to the docking area 4122. The edge area 4123 is an arc-shaped surface that is inclined from the first cavity 52 to the second cavity 53. The purpose of this arrangement is to ensure that, in the first state, the deformed portion of the diaphragm 51 can be supported by the arc-shaped edge area 4123, thereby reducing diaphragm 51 deformation and stress concentration, and improving the service life of the diaphragm 51.

[0044] In an optional embodiment, the system further includes a first bearing 8 and a second bearing 9. The first bearing 8 is disposed on the outside of the eccentric wheel 33, and the connecting member 41 is disposed on the outside of the first bearing 8. The second bearing 9 is disposed between the housing 2 and the drive shaft 32, effectively reducing the friction between the drive shaft 32 and the eccentric wheel 33 during rotation.

[0045] In an optional embodiment, the housing 2 includes a first housing 21, a second housing 22 and a third housing 23, the first housing 21 and the second housing 22 forming a first cavity 52, and the third housing 23 housing an electrical component 10.

[0046] Understandably, the split structure not only facilitates the installation and maintenance of the electrical components 10, but also separates the electrical components 10 from the pump body 5, the electromagnetic drive assembly 3, and the connecting assembly 4, reducing the risk of electrical component 10 failure. In this embodiment, heat dissipation vents 11 are provided on the outer casing 2 on one side of both the electrical components 10 and the electromagnetic drive assembly 3 to facilitate effective heat dissipation for the electrical components 10 and the electromagnetic drive assembly 3.

[0047] In an optional embodiment, the housing 2 is also provided with a handle 12, which provides a convenient gripping part for the operator, making the movement and installation of the vacuum diaphragm pump system 1 more convenient and labor-saving, and improving the portability and operability of the equipment.

[0048] The above is only one specific implementation of this application, and any other improvements made based on the concept of this application shall be considered within the scope of protection of this application.

Claims

1. An electromagnetically driven corrosion resistant vacuum diaphragm pump system characterized by, The system comprises: a housing having a cavity; an electromagnetic driving assembly arranged in the cavity for providing power, comprising a driving member, a driving shaft connected with the driving member, and an eccentric wheel sleeved outside the driving shaft; a connecting assembly comprising two connecting members connected on opposite sides of the eccentric wheel; two pump bodies, each comprising a diaphragm fixed on the connecting assembly, the diaphragm separating the cavity into a first cavity and a closed second cavity, the diaphragm being composed of a polytetrafluoroethylene film layer and a carbon fiber film layer, the polytetrafluoroethylene film layer being located on the side close to the second cavity, the electromagnetic driving assembly and the connecting assembly being located in the first cavity, the second cavity being connected with an inlet and an outlet, the electromagnetic driving assembly being capable of driving the eccentric wheel to rotate to drive the connecting assembly to move in the horizontal direction, thereby driving the diaphragm to switch between a first state and a second state, the diaphragm being concave in the first state, the volume of the second cavity being increased, gas entering the second cavity from the inlet, the diaphragm being convex in the second state, the volume of the second cavity being decreased, gas being discharged from the second cavity to the outlet.

2. The electromagnetically driven corrosion-resistant vacuum diaphragm pump system of claim 1, wherein, The system further comprises a one-way valve diaphragm arranged on the inlet and / or outlet.

3. The electromagnetically driven corrosion-resistant vacuum diaphragm pump system of claim 1, wherein, The connecting member comprises a connecting rod connected with the eccentric wheel, a butt joint portion butt jointed with the connecting rod, and a fixing portion, the edge of the diaphragm being fixed with the housing, the middle region of the diaphragm being fixed between the fixing portion and the butt joint portion.

4. The electromagnetically driven corrosion-resistant vacuum diaphragm pump system of claim 3, wherein, The butt joint portion has a groove, and the connecting portion has a through hole; The fixing portion has a protruding portion matched with the groove and a through rod matched with the through hole, the fixing portion being fixed with the butt joint portion through the protruding portion and the recessed portion, and the through rod being inserted into the through hole.

5. The electromagnetically driven corrosion-resistant vacuum diaphragm pump system of claim 4, wherein, A sealing member is further arranged between the fixing portion and the diaphragm.

6. The electromagnetically driven corrosion-resistant vacuum diaphragm pump system of claim 4, wherein, The butt joint portion comprises a butt joint region and an edge region connected with the butt joint region, the edge region being an arc surface arranged obliquely from the first cavity to the second cavity.

7. The electromagnetically driven corrosion-resistant vacuum diaphragm pump system of claim 1, wherein, The system further comprises a first bearing and a second bearing, the first bearing being arranged outside the eccentric wheel, the connecting member being arranged outside the first bearing, and the second bearing being arranged between the housing and the driving shaft.

8. The electromagnetically driven corrosion-resistant vacuum diaphragm pump system of claim 1, wherein, The housing comprises a first shell, a second shell, and a third shell, the first shell and the second shell forming the first cavity, and the third shell being arranged with an electrical assembly.

9. The electromagnetically driven corrosion-resistant vacuum diaphragm pump system of claim 1, wherein, A handle is further arranged on the housing.

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