High-efficiency vacuum pump

Abstract

A high-efficiency vacuum pump comprises a housing, a first air extraction assembly, a second air extraction assembly, and a power assembly. The first air extraction assembly comprises a first air passage plate, a first diaphragm, and a first cover plate. One end of the first air passage plate is connected to the housing and the other end is connected to the first cover plate. The first cover plate is provided with a first input port and a first output port, and the first input port and the first output port are respectively connected to the first air passage plate. The second air extraction assembly comprises a second air passage plate, a second diaphragm, and a second cover plate. One end of the second air passage plate is connected to the housing and the other end is connected to the second cover plate. The second cover plate is provided with a second input port and a second output port. One end of the second input port is connected to the first input port and the other end is connected to the second air passage plate. One end of the second output port is connected to the first output port and the other end is connected to the second air passage plate. The power assembly is used to drive the first diaphragm and the second diaphragm to synchronously and alternately move in both directions. The above-mentioned high-efficiency vacuum pump can improve air extraction efficiency, and uses the first input port for air intake and the first output port for exhaust.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum pumps, in particular to a high-efficiency vacuum pump. Background Art

[0002] A vacuum pump refers to a device or equipment that uses a vacuum pump, physical, chemical or physicochemical methods to evacuate the container to obtain a vacuum. Generally speaking, a vacuum pump is a device that uses various methods to improve, generate and maintain a vacuum in a closed space. It is widely used in industries such as metallurgy, chemical industry, food and electronic coating. However, at present, most vacuum pumps are single-cylinder, that is, one cylinder is equipped with a piston, an air inlet pipe and an air outlet pipe, which can only achieve unidirectional reciprocating motion and cannot achieve efficient vacuum extraction; when the vacuum pump is a double-cylinder, there are two air inlet pipes and two air outlet pipes, which makes a lot of noise. Summary of the Invention

[0003] Based on this, it is necessary to provide a compact and efficient vacuum pump to address the above problems.

[0004] and a control panel comprising: a first control panel, wherein the control panel has a first control panel, and a second control panel has a second control panel, wherein the control panel has a first control panel and a second control panel, wherein the control panel has a first control panel and a second control panel, wherein the control panel has a first control panel and a second control panel, wherein the control panel has a first control panel and a second control panel, wherein the control panel has a first control panel and a second control panel, wherein the control panel has a first control panel and a second control panel, wherein the control panel has a first control panel and a second control panel, wherein the control panel has a first control panel and a second control panel, wherein the control panel has a first control panel and a second control panel, wherein the control panel has a inlet, and the other end is connected to the first air inlet; one end of the second through hole is connected to the first air outlet, and the other end is connected to the first output port; the second air passage plate is provided with a second air inlet and a second air outlet, and the second cover plate is further provided with a third through hole and a fourth through hole, one end of the third through hole is connected to the second input port, and the other end is connected to the second air inlet; one end of the fourth through hole is connected to the second air outlet, and the other end is connected to the second output port; the bottom of the shell is provided with a first air groove and a second air groove, one end of the first air groove is connected to the first input port, and the other end is connected to the second input port, one end of the second air groove is connected to the second output port, and the other end is connected to the first output port; the first air extraction component also includes a first valve, which is movably connected to a side of the first air passage plate close to the first cover plate, and the first cover plate covers the first valve; the first valve selectively closes the first air outlet or the first through hole as the first diaphragm expands and contracts; the side walls of the first diaphragm and the side walls of the second diaphragm are both wavy and retractable structures.

[0005] In one embodiment, the first valve includes a first connecting portion, a first partition portion, a second connecting portion and a second partition portion, the first partition portion is connected to the first connecting portion, the second connecting portion is connected to the first connecting portion, and the second partition portion is connected to the second connecting portion, the first partition portion is used to control the opening and closing of the first through hole, and the second partition portion is used to control the opening and closing of the first air outlet.

[0006] In one embodiment, the first connecting portion is provided with a first ventilation groove, the first ventilation groove is connected to the first air inlet hole, and the second connecting portion is provided with a second ventilation groove, the second ventilation groove is connected to the second through hole.

[0007] In one embodiment, the first air passage plate includes a substrate portion and a raised portion connected to the substrate portion, a groove is provided on one side of the substrate portion to accommodate the first valve, and the raised portion is used to insert the first valve; a first convex ring and a second convex ring are provided on one side of the first cover plate, the first convex ring is used to abut the first connecting portion, and the second convex ring is used to abut the second connecting portion.

[0008] In one embodiment, the first air pumping assembly further includes a first piston and a first pressure plate connected to the first piston, the first piston is used to push the first diaphragm closer to or away from the first air plate; the first air plate cooperates with the shell to fix the periphery of one end of the first diaphragm; the first piston cooperates with the first pressure plate to fix the end of the first diaphragm away from the first air plate; a recessed accommodating cavity is provided on one side of the substrate portion close to the first diaphragm, the accommodating cavity is used to accommodate the first pressure plate; the size of the accommodating cavity is less than or equal to the size of the first pressure plate; the second air pumping assembly further includes a second piston and a second pressure plate connected to the second piston.

[0009] In one embodiment, the power assembly includes a rotating shaft, an eccentric wheel, a flywheel and a power element. The rotating shaft passes through the eccentric wheel, the first piston and the second piston are sleeved on the eccentric wheel, the eccentric wheel is used to drive the first piston and the second piston to move synchronously and alternately in both directions, the flywheel is connected to one side of the eccentric wheel, the power element is installed on the housing, and the power element is used to drive the rotating shaft to rotate.

[0010] In one embodiment, a length of an end of the first diaphragm connected to the first gas plate is greater than a length of an end of the first diaphragm connected to the first piston.

[0011] The above-mentioned high-efficiency vacuum pump improves the exhaust efficiency by synchronously and bidirectionally alternatingly moving the first diaphragm and the second diaphragm; one end of the second input port is connected to the first input port, and one end of the second output port is connected to the first output port, so that the first input port is used for intake and the first output port is used for exhaust, thereby reducing noise and having a compact structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the assembly structure of a high-efficiency vacuum pump according to an embodiment of the present invention;

[0013] Figure 2 for Figure 1 A cross-sectional view along line AA of the high-efficiency vacuum pump shown;

[0014] Figure 3 for Figure 1 The working principle diagram of the second pumping component in the high-efficiency vacuum pump shown;

[0015] Figure 4 for Figure 3 An exploded view of the first pumping assembly in the high-efficiency vacuum pump shown;

[0016] Figure 5 for Figure 4 The working principle diagram of the first air extraction component shown;

[0017] Figure 6 for Figure 2 A schematic diagram of the first vacuum pump in the high-efficiency vacuum pump in the suction state;

[0018] Figure 7 for Figure 6 Schematic diagram of the first exhaust component in the high-efficiency vacuum pump in the exhaust state.

[0019] The meanings of the numbers in the accompanying drawings are:

[0020] 100. High-efficiency vacuum pump;

[0021] 10. Shell; 11. Bottom shell; 111. First air groove; 12. Outer shell; 20. First air extraction assembly; 21. First air plate; 211. Base plate; 2111. First air inlet; 2112. First air outlet; 2113. Groove; 2114. Accommodation cavity; 2115. First through hole; 2116. Second through hole; 212. Raised portion; 213. Positioning portion; 22. First diaphragm; 221. Air cavity; 23. First piston; 24. First Cover plate; 241, first input port; 242, first through hole; 243, second through hole; 244, first output port; 245, latch; 246, first bead; 247, second bead; 25, first valve; 251, first connecting portion; 2511, first vent groove; 252, first baffle; 253, second connecting portion; 2531, second vent groove; 254, second baffle; 26, first pressure plate; 261, panel; 262, positioning post;

[0022] 30. Second vacuum assembly; 31. Second air plate; 3111. Second air inlet; 3112. Second air outlet; 3113. Third through-hole; 3114. Fourth through-hole; 32. Second diaphragm; 33. Second piston; 34. Second cover plate; 341. Second input port; 342. Third through-hole; 343. Fourth through-hole; 344. Second output port; 35. Second valve; 36. Second pressure plate; 40. Power assembly; 41. Rotating shaft; 42. Eccentric wheel; 43. Flywheel; 44. Power element. DETAILED DESCRIPTION

[0023] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0025] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0026] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0027] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate 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 an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0029] Please refer to Figures 1 to 7 , a high-efficiency vacuum pump 100 according to one embodiment of the invention includes a housing 10, a first air extraction assembly 20, a second air extraction assembly 30 and a power assembly 40. The first air extraction assembly 20 includes a first air passage plate 21, a first diaphragm 22 and a first cover plate 24. The first cover plate 24 is provided with a first input port 241 and a first output port 244. The second air extraction assembly 30 includes a second air passage plate 31, a second diaphragm 32 and a second cover plate 34. The second cover plate 34 is provided with a second input port and a second output port. The above-mentioned high-efficiency vacuum pump 100 improves the air extraction efficiency by synchronously and alternately moving the first diaphragm 22 and the second diaphragm 32 in both directions; one end of the second input port 341 is connected to the first input port 241, and one end of the second output port 344 is connected to the first output port 244, so that the first input port 241 is shared for air intake and the first output port 244 is shared for exhaust, thereby reducing noise and having a compact structure.

[0030] like Figure 1 and Figure 2 As shown, in this embodiment, the housing 10 includes a bottom shell 11 and an outer shell 12 connected to the bottom shell 11 . A first air groove 111 and a second air groove (not shown) are provided at the bottom of the bottom shell 11 .

[0031] like Figures 1 to 7As shown, the first air extraction assembly 20 includes a first air passage plate 21, a first diaphragm 22, a first piston 23 and a first cover plate 24. One end of the first air passage plate 21 is connected to the housing 10, and the other end is connected to the first cover plate 24; the first air passage plate 21 includes a base plate portion 211 and a raised portion 212 connected to the base plate portion 211. The base plate portion 211 is provided with a first air inlet hole 2111 and a first air outlet hole 2112. Optionally, a groove 2113 is further provided on one side of the base plate portion 211, and a recessed accommodating cavity 2114 is recessed on the other side. The first air inlet hole 2111 and the first air outlet hole 2112 are both connected to the accommodating cavity 2114; a first through hole 2115 and a second through hole 2116 are provided at the bottom of the substrate portion 211, one end of the first through hole 2115 is connected to the first air groove 111, and the second through hole 2116 is connected to the second air groove; further, there are multiple protrusions 212; the first air plate 21 also includes a limiting portion 213, the limiting portion 213 is protruded on one side of the substrate portion 211, and the limiting portion 213 is used to abut against the first diaphragm 22; in one embodiment, the limiting portion 213 is arc-shaped to prevent the first diaphragm 22 from being crushed when the first diaphragm 22 is expanded and contracted, thereby extending the service life of the first diaphragm 22. There is an inclined surface between the accommodating cavity 2114 of the substrate portion 211 and the limiting portion 213. Under the action of the limiting portion 213, when exhausting, the first diaphragm 22 is arranged parallel to the inclined surface, which reduces the friction between the first diaphragm 22 and the substrate portion 211 and prolongs the service life. Moreover, the gap between the first diaphragm 22 and the inclined surface is small, which can reduce air residue and increase the air compression. The first air plate 21 cooperates with the shell 10 to fix the periphery of one end of the first diaphragm 22, and an air cavity 221 is formed between the first diaphragm 22 and the first air plate 21. Optionally, the limiting portion 213 cooperates with the shell 10 to fix one end of the first diaphragm 22; the first piston 23 connects the end of the first diaphragm 22 away from the first air plate 21, and the first piston 23 is used to push the first diaphragm 22 closer to or away from the first air plate 21; optionally, the side wall of the first diaphragm 22 is a wavy retractable structure. Figure 6 As shown, when the first diaphragm 22 stretches, the volume of the air cavity 221 increases, and the air capacity is expanded; Figure 7 As shown, when the first diaphragm 22 shrinks, the gap between the first diaphragm 22 and the first air plate 21 can be reduced, thereby increasing the air compression; further, the length of the end of the first diaphragm 22 connected to the first air plate 21 is greater than the length of the end of the first diaphragm 22 connected to the first piston 23; the first diaphragm 22 is made of soft rubber to facilitate expansion and contraction.

[0032] like Figure 4 and Figure 5As shown, the first cover plate 24 is provided with a first input port 241, a first through-hole 242, a second through-hole 243, and a first output port 244. The first input port 241 and the first output port 244 are respectively connected to the first air flow plate 21. Optionally, one end of the first through-hole 242 is connected to the first input port 241 and the other end is connected to the first air inlet 2111, forming an air inlet channel. One end of the second through-hole 243 is connected to the first air outlet 2112 and the other end is connected to the first output port 244, forming an air outlet channel. In one embodiment, a latch 245 is provided on one side of the first cover plate 24 for inserting into the base plate 211 for positioning. Optionally, a first protrusion 246 and a second protrusion 247 are provided on one side of the first cover plate 24. During use, the latch 245 is inserted into the base plate 211, and the first cover plate 24, the first air flow plate 21, and the housing 10 are then fixed together with screws, making assembly and disassembly easy.

[0033] like Figures 4 to 6 As shown, the first air extraction assembly 20 further includes a first valve 25, which is movably connected to a side of the first air passage plate 21 near the first cover plate 24. The first cover plate 24 covers the first valve 25. The first valve 25 selectively closes the first air outlet 2112 or the first through hole 242 as the first diaphragm 22 expands and contracts. The first valve 25 is accommodated in the groove 2113, and the protrusion 212 is used to insert and secure the first valve 25. Optionally, the first valve 25 includes a first connecting portion 251, a first partition portion 252, a second connecting portion 253 and a second partition portion 254, the first partition portion 252 is connected to the first connecting portion 251, the second connecting portion 253 is connected to the first connecting portion 251, and the second partition portion 254 is connected to the second connecting portion 253, the first partition portion 252 is used to control the opening and closing of the first through hole 242, and the second partition portion 254 is used to control the opening and closing of the first air outlet 2112; the first protrusion 246 is used to abut the first connecting portion 251, and the second protrusion 247 is used to abut the second connecting portion 253. Furthermore, the first protrusion 246 is smaller than the first connection portion 251, and the second protrusion 247 is smaller than the second connection portion 253. The first connection portion 251 is provided with a first vent groove 2511, which communicates with the first air inlet 2111. The second connection portion 253 is provided with a second vent groove 2531, which communicates with the second through hole 243. The first valve 25 is made of a soft rubber material to facilitate deformation of the first and second partition portions 252 and 254.

[0034] like Figure 6As shown, when inhaling, the first diaphragm 22 moves away from the first air flow plate 21. Under the action of the airflow, the first partition portion 252 bulges toward the first air inlet 2111, and the second partition portion 254 bulges toward the first air outlet 2112 to close the first air outlet 2112. At this time, the first through hole 242 is in an open state, and the first air outlet 2112 is in a closed state, so that external air enters the air cavity 221 from the first input port 241 through the first through hole 242 and the first air inlet 2111; Figure 7 As shown, when gas needs to be compressed, the first diaphragm 22 moves toward the first air plate 21 to compress the air in the air cavity 221; when the pressure of the compressed gas is large enough, the airflow pushes the first baffle portion 252 to bulge toward the first through hole 242 and close the first through hole 242, and the second baffle portion 254 bulges toward the second through hole 243. At this time, the first through hole 242 is in a closed state and the first air outlet 2112 is in an open state, so that the compressed air in the air cavity 221 is discharged from the first air outlet 2112 through the second through hole 243 and the first output port 244.

[0035] Please check again Figures 2 to 7 The first air extraction assembly 20 also includes a first pressure plate 26 connected to the first piston 23. The first piston 23 and the first pressure plate 26 cooperate to secure one end of the first diaphragm 22 away from the first air passage plate 21. A housing 2114 accommodates the first pressure plate 26, providing sufficient space for the first pressure plate 26 to move during exhaust, thereby causing the first diaphragm 22 to become concave, reducing the gap between the first diaphragm 22 and the first air passage plate 21 and further increasing the amount of air compressed. Optionally, the size of the housing 2114 is smaller than or equal to that of the first pressure plate 26. The first pressure plate 26 further includes a panel 261 and a positioning post 262 connected to the panel 261. The positioning post 262 is inserted into the first piston 23. In one embodiment, there are two positioning posts 262. During use, one end of the first diaphragm 22 abuts the first piston 23, the positioning post 262 is inserted into the first piston 23, and the panel 261 abuts the other end of the first diaphragm 22. The panel 261 and the first piston 23 are then fixed together with screws, making assembly easy.

[0036] like Figures 1 to 3As shown, the second air extraction assembly 30 includes a second air passage plate 31, a second diaphragm 32, a second piston 33, a second cover plate 34, a second valve 35 and a second pressure plate 36. One end of the second air passage plate 31 is connected to the shell 10, and the other end is connected to the second cover plate 34. An air cavity (not marked in the figure) is formed between the second diaphragm 32 and the second air passage plate 31; the second air passage plate 31 is provided with a second air inlet hole 3111, a second air outlet hole 3112, a third through hole 3113 and a fourth through hole 3114; the second piston 33 is used to push the second diaphragm 32 towards or away from the second air passage plate 31; optionally, the side wall of the second diaphragm 32 is a wavy retractable structure. The second cover plate 34 is provided with a second input port 341, a third through hole 342, a fourth through hole 343 and a second output port 344. One end of the second input port 341 is connected to the first input port 241, and the other end is connected to the second air passage plate 31. One end of the second output port 344 is connected to the first output port 244, and the other end is connected to the second air passage plate 31. Optionally, one end of the third through hole 342 is connected to the second input port 341, and the other end is connected to the second air inlet 3111; one end of the fourth through hole 343 is connected to the second air outlet 3112, and the other end is connected to the second output port 344. Furthermore, one end of the first air groove 111 is connected to the first input port 241 through the first through hole 2115. 41, and the other end is connected to the second input port 341 through the third through-hole 3113. One end of the second air groove is connected to the second output port 344 through the fourth through-hole 3114, and the other end is connected to the first output port 244 through the second through-hole 2116. Therefore, the first input port 241, the first through-hole 2115, the first air groove 111, the second input port 341, the third through-hole 3113, the third through-hole 342, and the second air inlet 3111 form an air inlet channel, and the second air outlet 3112, the fourth through-hole 343, the second output port 344, the fourth through-hole 3114, the second air groove, the second through-hole 2116, and the first output port 244 form an exhaust channel.

[0037] like Figure 2 and Figure 3 As shown, the second valve 35 is movably connected to the second air passage plate 31. The second valve 35 selectively closes the second air outlet 3112 or the third through hole 342 as the second diaphragm 32 expands and contracts. When inhaling, the second valve 35 closes the second air outlet 3112, and when exhausting, the second valve 35 closes the third through hole 342. The second pressure plate 36 is connected to the second piston 33, and the second piston 33 cooperates with the second pressure plate 36 to fix the second diaphragm 32. In one embodiment, the first air extraction assembly 20 and the second air extraction assembly 30 have similar structures. The first air extraction assembly 20 and the second air extraction assembly 30 are symmetrically arranged at opposite ends of the housing 10. The difference is that the first input port 241 is open for air intake, the first output port 244 is open for exhaust, and the second input port 341 and the second output port 344 are both closed with plugs.

[0038] like Figures 1 to 3 As shown, the power assembly 40 is used to drive the first diaphragm 22 and the second diaphragm 32 to move synchronously and alternately in both directions, that is, when the first diaphragm 22 stretches and inhales air, the second diaphragm 32 contracts and exhausts air; or, when the first diaphragm 22 contracts and exhausts air, the second diaphragm 32 stretches and inhales air. The power assembly 40 includes a rotating shaft 41, an eccentric wheel 42, a flywheel 43 and a power element 44. The rotating shaft 41 is penetrated by the eccentric wheel 42, and the first piston 23 and the second piston 33 are sleeved on the eccentric wheel 42. The eccentric wheel 42 is used to drive the first piston 23 and the second piston 33 to move synchronously and alternately in both directions. The flywheel 43 is connected to one side of the eccentric wheel 42. The inertia of the flywheel 43 is used to make the rotation angle and output torque of the rotating shaft 41 more uniform. Through the effect of the flywheel 43, the large resistance is overcome to maintain the cyclic cross reciprocating motion of the first piston 23 and the second piston 33; the power element 44 is installed on the housing 10, and the power element 44 is used to drive the rotating shaft 41 to rotate; optionally, the power element 44 is a motor; further, bearings are provided between the first piston 23 and the eccentric wheel 42, between the second piston 33 and the eccentric wheel 42, and between the rotating shaft 41 and the bottom shell 11.

[0039] like Figure 6 As shown, when inhaling, the power element 44 drives the rotating shaft 41 to rotate, and the rotating shaft 41 drives the eccentric wheel 42 to rotate, and then the eccentric wheel 42 drives the first piston 23 to stretch the first diaphragm 22 in the direction away from the first air plate 21, and the first partition portion 252 bulges in the direction of passing through the first air inlet 2111, and the second partition portion 254 bulges in the direction of the first air outlet 2112. At this time, the first through hole 242 is in an open state, and the first air outlet 2112 is in a closed state, so that external air enters the air cavity 221 from the first input port 241 through the first through hole 242 and the first air inlet 2111, and will not be discharged from the air cavity 221; Figure 7 As shown, when the gas is compressed, the rotating shaft 41 drives the first piston 23 to compress the first diaphragm 22 toward the first air plate 21, thereby compressing the air in the air cavity 221; when the pressure of the compressed gas is large enough, the airflow pushes the first baffle portion 252 to bulge toward the first through hole 242, and the second baffle portion 254 to bulge toward the second through hole 243. At this time, the first through hole 242 is in a closed state and the air outlet is in an open state, so that the compressed air in the air cavity 221 is discharged from the first air outlet 2112 through the second through hole 243 and the first output port 244.

[0040] The air intake and exhaust processes of the second air extraction component 30 are similar to those of the first air extraction component 20, except that Figure 3As shown, when inhaling, external air enters the air cavity of the second air extraction component 30 through the first input port 241, the first through hole 2115, the first air groove 111, the second input port 341, the third through hole 3113, the third through hole 342 and the second air inlet 3111. When exhausting, the compressed air in the air cavity of the second air extraction component 30 is discharged from the second air outlet 3112, the fourth through hole 343, the second output port 344, the fourth through hole 3114, the second air groove, the second through hole 2116 and the first output port 244. Moreover, as shown in FIG. Figure 2 As shown, under the action of the eccentric wheel 42, the first piston 23 stretches the first diaphragm 22 in the direction away from the first air plate 21 to inhale air. At the same time, the second piston 33 compresses the second diaphragm 32 in the direction of the second air plate 31 to exhaust air. The first diaphragm 22 and the second diaphragm 32 move synchronously and alternately in both directions, thereby improving the exhaust efficiency and enabling a large flow rate of compressed air to be output. When the air cavity 221 of the first air extraction component 20 takes in air through the first input port 241, the air cavity of the second air extraction component 30 exhausts air through the first output port 244 without interfering with each other. Therefore, the two can share the first input port 241 for intake and the first output port 244 for exhaust, without the need for two air inlet pipes and two air outlet pipes, which can both reduce noise and reduce the volume of the entire machine.

[0041] In addition, since the side wall of the first diaphragm 22 is a wavy retractable structure, when the first diaphragm 22 is stretched outward, the first diaphragm 22 is in a convex state, which can increase the stroke of the first diaphragm 22, thereby increasing the air capacity of the air cavity 221 and improving the air extraction efficiency; when the first diaphragm 22 is compressed, the first pressure plate 26 is accommodated in the accommodating cavity 2114. At this time, the first diaphragm 22 is in a concave state, which can reduce the gap between the first diaphragm 22 and the first air plate 21. Moreover, the first diaphragm 22 is arranged parallel to the inclined surface, and the gap between the first diaphragm 22 and the inclined surface is small, which can reduce air residue and thus increase the air compression amount.

[0042] The above-mentioned high-efficiency vacuum pump 100 improves the exhaust efficiency by synchronous and bidirectional alternating movement of the first diaphragm 22 and the second diaphragm 32; one end of the second input port 341 is connected to the first input port 241, and one end of the second output port 344 is connected to the first output port 244, thereby sharing the first input port 241 for intake and the first output port 244 for exhaust, reducing noise and having a compact structure.

[0043] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned 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.

[0044] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A high-efficiency vacuum pump, characterized in that: and a control panel having a pair of control panels, wherein the pair is connected at two opposite ends of the chain, and the control panel has two opposite ends, and the control panel has two opposite ends. The two control panels have two opposite ends, and the control panel has two opposite ends. The two control panels have two opposite ends. One end is connected to the first air inlet; one end of the second through hole is connected to the first air outlet, and the other end is connected to the first output port; the second air passage plate is provided with a second air inlet and a second air outlet, and the second cover plate is further provided with a third through hole and a fourth through hole, one end of the third through hole is connected to the second input port, and the other end is connected to the second air inlet; one end of the fourth through hole is connected to the second air outlet, and the other end is connected to the second output port; the bottom of the shell is provided with a first air groove and a second air groove, one end of the first air groove is connected to the first input port, and the other end is connected to the second input port, one end of the second air groove is connected to the second output port, and the other end is connected to the first output port; the first air extraction component also includes a first valve, which is movably connected to a side of the first air passage plate close to the first cover plate, and the first cover plate covers the first valve; the first valve selectively closes the first air outlet or the first through hole as the first diaphragm expands and contracts; the side walls of the first diaphragm and the side walls of the second diaphragm are both wavy and retractable structures.

2. The high-efficiency vacuum pump according to claim 1, characterized in that: The first valve includes a first connecting part, a first partition part, a second connecting part and a second partition part, the first partition part is connected to the first connecting part, the second connecting part is connected to the first connecting part, and the second partition part is connected to the second connecting part. The first partition part is used to control the opening and closing of the first through hole, and the second partition part is used to control the opening and closing of the first air outlet.

3. The high-efficiency vacuum pump according to claim 2, characterized in that: The first connection portion is provided with a first ventilation groove, the first ventilation groove is connected to the first air inlet hole, and the second connection portion is provided with a second ventilation groove, the second ventilation groove is connected to the second through hole.

4. The high-efficiency vacuum pump according to claim 2, characterized in that: The first air passage plate includes a substrate portion and a raised portion connected to the substrate portion, a groove is provided on one side of the substrate portion to accommodate the first valve, and the raised portion is used to insert the first valve; a first convex ring and a second convex ring are provided on one side of the first cover plate, the first convex ring is used to abut the first connecting portion, and the second convex ring is used to abut the second connecting portion.

5. The high-efficiency vacuum pump according to claim 4, characterized in that: The first air extraction component also includes a first piston and a first pressure plate connected to the first piston, the first piston is used to push the first diaphragm close to or away from the first air plate; the first air plate cooperates with the shell to fix the periphery of one end of the first diaphragm; the first piston cooperates with the first pressure plate to fix the first diaphragm away from the first air plate; a accommodating cavity is recessed on one side of the substrate close to the first diaphragm, and the accommodating cavity is used to accommodate the first pressure plate; the size of the accommodating cavity is less than or equal to the size of the first pressure plate; the second air extraction component also includes a second piston and a second pressure plate connected to the second piston.

6. The high-efficiency vacuum pump according to claim 5, characterized in that: The power assembly includes a rotating shaft, an eccentric wheel, a flywheel and a power element. The rotating shaft passes through the eccentric wheel. The first piston and the second piston are sleeved on the eccentric wheel. The eccentric wheel is used to drive the first piston and the second piston to move synchronously and alternately in both directions. The flywheel is connected to one side of the eccentric wheel. The power element is installed on the housing. The power element is used to drive the rotating shaft to rotate.

7. The high-efficiency vacuum pump according to claim 5, characterized in that: The length of one end of the first diaphragm connected to the first gas plate is greater than the length of one end of the first diaphragm connected to the first piston.

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