Diaphragm pump

Abstract

The utility model relates to the technical field of diaphragm pumps, in particular to a diaphragm pump. The diaphragm pump comprises a leather cup assembly, a driving part and a pump head assembly, the leather cup assembly comprises first leather cups and second leather cups, the driving part is in driving connection with the leather cup assembly so as to compress or stretch the leather cup assembly, the pump head assembly comprises air suction ports, air exhaust ports and an air suction and exhaust channel, and each first leather cup and each second leather cup correspond to one set of air suction ports and air exhaust ports. The exhaust port of the first leather cup is communicated with the air suction port of the second leather cup through the air suction and exhaust channel, when the first leather cup is stretched and the second leather cup is compressed, the air suction port of the first leather cup and the exhaust port of the second leather cup are opened, the air suction and exhaust channel is closed, external air enters the first leather cup through the air suction port, and the second leather cup exhausts air outwards through the exhaust port. When the second leather cup is stretched and the first leather cup is compressed, the air suction port of the first leather cup and the exhaust port of the second leather cup are closed, the air suction and exhaust channel is communicated, and the first leather cup exhausts air to the second leather cup through the air suction and exhaust channel.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of diaphragm pumps, and specifically provides a diaphragm pump. BACKGROUND

[0002] A diaphragm pump is a pump that uses a diaphragm to separate the inlet and outlet sides of the pump. The diaphragm is moved by a mechanical device inside the pump, and the diaphragm is able to continuously form a vacuum or negative pressure at the suction port and a positive pressure at the exhaust port. The diaphragm pump can be used in household appliances.

[0003] Generally, a plurality of valve plates are arranged in a single pump head of a diaphragm pump, and the diaphragm pump realizes greater flow by synchronously or alternately sucking and exhausting and sharing the air suction path and the air exhaust path. However, when greater air suction pressure is required, the power of the motor and the compression ratio of the air bag volume need to be increased to achieve the air suction pressure, or two pump heads are connected in series, which increases the cost. SUMMARY

[0004] The present application aims to solve the above technical problems, that is, to solve the problems of low suction force and high cost of increasing suction force of the existing diaphragm pump.

[0005] The present application provides a diaphragm pump, comprising: a cup assembly comprising a first cup and a second cup; a driving member drivingly connected with the cup assembly to compress or stretch the first cup and the second cup; a pump head assembly comprising a suction port, an exhaust port and a suction and exhaust passage, each of the first cup and the second cup corresponding to a group of the suction port and the exhaust port, the exhaust port of the first cup and the suction port of the second cup being communicated through the suction and exhaust passage; so that when the first cup is stretched and the second cup is compressed, the suction port of the first cup and the exhaust port of the second cup are opened, the suction and exhaust passage is closed, external gas enters the first cup through the suction port, and the second cup exhausts air through the exhaust port; when the second cup is stretched and the first cup is compressed, the suction port of the first cup and the exhaust port of the second cup are closed, the suction and exhaust passage is communicated, and the first cup exhausts air to the second cup through the suction and exhaust passage.

[0006] In the optional technical solution of the above diaphragm pump, the first cup and the second cup are each provided as a plurality of cups, and the pump head assembly further comprises an air suction path and an air exhaust path, the air suction path being capable of communicating the suction ports of all the first cups, and the air exhaust path being capable of communicating the exhaust ports of all the second cups.

[0007] In the optional technical scheme of the diaphragm pump, the suction and exhaust passages are provided in plurality, the first cup, the second cup and the suction and exhaust passages are equal in number, each of the suction and exhaust passages is communicated with a group of the first cup and the second cup, so that in the state that the first cup is compressed and the second cup is stretched, each of the first cup can exhaust to the second cup communicated therewith.

[0008] In the optional technical scheme of the diaphragm pump, the pump head assembly further comprises an air inlet pipeline and an air exhaust pipeline, the air inlet pipeline is communicated with the suction air passage and the outside of the pump head assembly, the air exhaust pipeline is communicated with the exhaust air passage and the outside of the pump head assembly, so that the outside gas can enter the first cup through the air inlet pipeline and the gas of the second cup can be exhausted to the outside through the air exhaust pipeline.

[0009] In the optional technical scheme of the diaphragm pump, the pump head assembly comprises a pump head, a cover plate, an air inlet valve and an air exhaust valve, the cover plate is arranged on the cup assembly and is arranged in the pump head, the air inlet port and the air exhaust port are arranged on the cover plate, the suction and exhaust passages are arranged in the pump head, the air inlet valve is arranged on the air inlet port and can open or close the air inlet port, the air exhaust valve is arranged on the air exhaust port and can open or close the air exhaust port.

[0010] In the optional technical scheme of the diaphragm pump, the air inlet valve comprises a movable piece and a closing piece, the movable piece is movably arranged on the air inlet port, so that the closing piece opens or closes the air inlet port, the closing piece is arranged between the cup assembly and the cover plate, and the air exhaust valve is arranged between the cover plate and the pump head.

[0011] In the optional technical scheme of the diaphragm pump, the air inlet valve and the air exhaust valve are both one-way valves.

[0012] In the optional technical scheme of the diaphragm pump, the first cup and the second cup are symmetrically arranged on the diaphragm pump.

[0013] In the optional technical scheme of the diaphragm pump, the first cup and the second cup are provided in two, and the suction and exhaust passages are provided in two, each of the suction and exhaust passages is communicated with the non-adjacent first cup and the second cup.

[0014] In the optional technical scheme of the diaphragm pump, the driving piece is provided as a motor.

[0015] In the case of adopting the technical scheme, the first skin bowl is stretched, the second skin bowl is compressed, the second skin bowl is stretched, and the first skin bowl is compressed as a working cycle, and the gas is compressed by two stages every time the working cycle is completed. Therefore, the diaphragm pump can improve the suction and increase the flow. BRIEF DESCRIPTION OF DRAWINGS

[0016] The preferred embodiments of the present application will be described below with reference to the accompanying drawings, in which:

[0017] Figure 1 is a schematic diagram of the diaphragm pump of the present application;

[0018] Figure 2 is an axial view of the diaphragm pump of the present application;

[0019] Figure 3 is Figure 1 is an exploded view of the diaphragm pump in the present application;

[0020] Figure 4 is Figure 1 is a schematic diagram of the pump head of the diaphragm pump separated from the diaphragm pump;

[0021] Figure 5 is Figure 2 is an A-A sectional view.

[0022] LIST OF REFERENCE NUMBERS:

[0023] 1, diaphragm pump; 11, skin bowl assembly; 111, first skin bowl; 112, second skin bowl; 12, motor; 13, pump head assembly; 130, cover plate; 131, suction port; 131a, suction port of the first skin bowl; 131b, suction port of the second skin bowl; 132, exhaust port; 132a, exhaust port of the first skin bowl; 132b, exhaust port of the second skin bowl; 133, suction and exhaust passage; 1331, first suction and exhaust passage; 1332, second suction and exhaust passage; 134, pump head; 1341, suction gas path; 1342, exhaust gas path; 1343, intake pipeline; 1344, exhaust pipeline; 135, suction valve; 135a, suction valve of the first skin bowl; 135b, suction valve of the second skin bowl; 1351, movable part; 1352, closure; 136, exhaust valve; 136a, exhaust valve of the first skin bowl; 136b, exhaust valve of the second skin bowl; 14, mounting seat; 15, rotor. DETAILED DESCRIPTION

[0024] The exemplary embodiments will be described in detail herein with reference to the attached drawings. In the following description, like reference numerals refer to like elements, unless indicated otherwise. As used herein, the terms "first", "second", and so on do not necessarily mean a chronological order, but can be used to distinguish one element from another. The term "plurality" means two or more.

[0025] Unless otherwise indicated, the terms "upper", "lower", "top", "bottom", "inner", "outer" and the like refer to the orientation or position as shown in the drawings, and are used for convenience and simplicity of description and are not intended to convey any specific orientation, configuration or operation of the devices or elements being described, and thus should not be construed as limiting the application.

[0026] It should be noted that when an element is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element, or intervening elements can also be present. In addition, "connected" can be interpreted in a broad sense, for example, it can be fixedly connected, or detachably connected, or integrally connected; it can be mechanically connected, or electrically connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be internal connection of two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0027] In combination Figures 1 to 5The application provides a diaphragm pump 1, which comprises a cup assembly 11, a driving member and a pump head assembly 13. For the convenience of introduction, the driving member is set as a motor 12 in the following introduction. The cup assembly 11 comprises a first cup 111 and a second cup 112. The motor 12 is in driving connection with the cup assembly 11. The motor 12 drives a rotor 15 to move to stretch one of the first cup 111 and the second cup 112 and compress the other one of the first cup 111 and the second cup 112. The pump head assembly 13 comprises a suction port 131, a discharge port 132 and a suction-discharge channel 133. Each of the first cup 111 and the second cup 112 corresponds to a group of the suction port 131 and the discharge port 132. The discharge port 132a of the first cup 111 and the suction port 131b of the second cup 112 are communicated through the suction-discharge channel 133. When the motor 12 drives the rotor 15 to stretch the first cup 111 and compress the second cup 112, the suction-discharge channel 133 is closed, and the suction port 131a of the first cup 111 and the discharge port 132b of the second cup 112 are opened. Since the first cup 111 is stretched, the air pressure in the first cup 111 is reduced, and the external gas can enter the first cup 111 through the suction port 131a of the first cup 111. Since the second cup 112 is compressed, the air pressure in the second cup 112 is increased, and the second cup 112 discharges the gas to the outside through the discharge port 132b of the second cup 112. When the second cup 112 is stretched and the first cup 111 is compressed, the suction-discharge channel 133 is connected to connect the first cup 111 and the second cup 112, and the suction port 131a of the first cup 111 and the discharge port 132b of the second cup 112 are closed. At this time, the air pressure in the first cup 111 is increased, the air pressure in the second cup 112 is reduced, and the gas in the first cup 111 is discharged to the second cup 112 through the suction-discharge channel 133. From the stretching of the first cup 111 and the compression of the second cup 112 to the stretching of the second cup 112 and the compression of the first cup 111, it is one working cycle, and the gas can be compressed by two stages every time one working cycle is completed. Therefore, the diaphragm pump 1 can improve the suction and increase the flow.

[0028] Since the diaphragm pump 1 in the prior art generally introduces air into the cup assembly 11 during the stretching process of the cup assembly 11 and discharges the air in the cup assembly 11 to the outside during the compression process of the cup assembly 11, the whole air intake and discharge is only compressed once. Therefore, when the diaphragm pump 1 in the prior art needs to increase the flow or needs to improve the suction pressure, the power of the motor 12 can only be increased, or two pump head assemblies 13 can only be connected in series, thereby increasing the cost. The structure can compress the gas by two stages in one working cycle, thereby improving the suction pressure and increasing the flow without increasing the cost.

[0029] In one embodiment, the diaphragm pump 1 is combined with Figures 3 to 5The pump head assembly 13 comprises a pump head 134, a cover plate 130, an air suction valve 135 and an air exhaust valve 136. The cover plate 130 covers the skin bowl assembly 11 and is arranged in the pump head 134. The air suction port 131 and the air exhaust port 132 are arranged on the cover plate 130, and the air suction and exhaust passage 133 is arranged in the pump head 134. The air suction valve 135 is arranged on the air suction port 131 and can open or close the air suction port 131. The air exhaust valve 136 is arranged on the air exhaust port 132 and can open or close the air exhaust port 132. In order to stably arrange the skin bowl assembly 11 in the diaphragm pump 1, the skin bowl assembly 11 is arranged on the mounting seat 14 in the diaphragm pump 1. When the cover plate 130 covers the skin bowl assembly 11, the cover plate 130 also covers the top of the mounting seat 14, and the cover plate 130 can close the skin bowl assembly 11, thereby avoiding the skin bowl assembly 11 from leaking air outward when being compressed or stretched, and further avoiding affecting the air suction capacity of the diaphragm pump 1. The air suction port 131 and the air exhaust port 132 are arranged on the cover plate 130, and the skin bowl assembly 11 can only exhaust air outward or intake air inward through the cover plate 130. The air suction valve 135 arranged on the air suction port 131 can open or close the air suction port 131, and the air exhaust valve 136 arranged on the air exhaust port 132 can open or close the air exhaust port 132. When the first skin bowl 111 is stretched and the second skin bowl 112 is compressed, the air suction valve 135a of the first skin bowl 111 and the air exhaust valve 136b of the second skin bowl 112 are opened, so that the air suction port 131a of the first skin bowl 111 and the air exhaust port 132b of the second skin bowl 112 are opened. The air exhaust valve 136a of the first skin bowl 111 and the air suction valve 135b of the second skin bowl 112 are closed, so that the air suction and exhaust passage 133 is closed. At this time, air is taken into the first skin bowl 111 from the outside, and air is exhausted from the second skin bowl 112 to the outside. When the second skin bowl 112 is stretched and the first skin bowl 111 is compressed, the air suction valve 135a of the first skin bowl 111 and the air exhaust valve 136b of the second skin bowl 112 are closed, so that the air suction port 131a of the first skin bowl 111 and the air exhaust port 132b of the second skin bowl 112 are closed. The air exhaust valve 136a of the first skin bowl 111 and the air suction valve 135b of the second skin bowl 112 are opened, so that the air suction and exhaust passage 133 is opened. At this time, the first skin bowl 111 and the second skin bowl 112 are not connected with the outside, and the first skin bowl 111 exhausts air to the second skin bowl 112.

[0030] In an embodiment, the air suction valve 135 and the air exhaust valve 136 are both one-way valves, thereby avoiding disorder of air in the skin bowl assembly 11 and affecting the air suction pressure of the diaphragm pump 1.

[0031] In an embodiment, the air suction valve 135 and the air exhaust valve 136 are both one-way valves, thereby avoiding disorder of air in the skin bowl assembly 11 and affecting the air suction pressure of the diaphragm pump 1. Figures 3 to 5 The air suction valve 135 comprises a movable part 1351 and a closing part 1352. The movable part 1351 is movably arranged on the air suction port 131 to open or close the air suction port 131. The air exhaust valve 136 is arranged between the cover plate 130 and the pump head 134.

[0032] When the first cup 111 is compressed and the second cup 112 is stretched, the air pressure in the first cup 111 is greater than the external air pressure and also greater than the air pressure in the suction and exhaust passage 133, the air pressure in the first cup 111 upwardly presses the closing member 1352 to drive the movable member 1351 upwardly until the closing member 1352 closes the suction port 131, at this time, the outside cannot intake air into the first cup 111, and the air pressure of the first cup 111 has upward pressure on the exhaust valve 136a of the first cup 111 to drive the exhaust valve 136a of the first cup 111 to open the exhaust port 132a of the first cup 111, the air pressure in the second cup 112 is less than the external air pressure and the air pressure in the suction and exhaust passage 133, the suction and exhaust passage 133 drives the movable member 1351 of the second cup 112 to move downwardly, the movable member 1351 drives the closing member 1352 to move downwardly to open the suction port 131b of the second cup 111, so that the suction and exhaust passage 133 is communicated with the first cup 111 and the second cup 112, the external air pressure is greater than the air pressure in the second cup 112 to press the exhaust valve 136 downwardly, so that the exhaust valve 136b of the second cup 112 closes the exhaust port 132b of the second cup 112, at this time, the first cup 111 intakes air into the second cup 112.

[0033] When the first cup 111 is stretched and the second cup 112 is compressed, the air pressure in the first cup 111 is less than the external air pressure and the air pressure in the suction and exhaust passage 133, the external air pushes the movable part 1351 in the first cup 111 to move downward, the movable part 1351 drives the closing part 1352 to move downward, so that the closing part 1352 opens the air inlet 131a of the first cup 111, the air pressure in the suction and exhaust passage 133 is greater than the air pressure in the first cup 111, which pushes the exhaust valve 136 downward, so that the exhaust valve 136a of the first cup 111 closes the exhaust port 132a of the first cup 111, the air pressure in the second cup 112 is greater than the external air pressure and the air pressure in the suction and exhaust passage 133, the air pressure in the second cup 112 pushes the closing part 1352 in the second cup 112 upward, so that the closing part 1352 drives the movable part 1351 to move upward, until the closing part 1352 closes the air inlet 131b of the second cup 112, at this time, the suction and exhaust passage 133 is closed, the first cup 111 is not communicated with the second cup 112, at the same time, the air pressure in the second cup 112 has upward pressure on the exhaust valve 136b of the second cup 112, so that the air in the second cup 112 pushes the exhaust valve 136b of the second cup 112 upward to open, so that the exhaust port 132b of the second cup 112 is opened. At this time, the external air can enter the first cup 111, the second cup 112 can exhaust air to the outside, and the first cup 111 cannot enter the second cup 112. The above-mentioned arrangement can make the suction valve 135 and the exhaust valve 136 work as a one-way valve, so as to avoid the disorder of the air flow in the cup assembly 11, and further improve the suction pressure of the cup assembly 11.

[0034] It should be noted that the first cup 111 and the second cup 112 can be provided in multiple, at this time, the pump head assembly 13 further comprises a suction air passage 1341 and an exhaust air passage 1342, the suction air passage 1341 can communicate with the air inlets 131a of all the first cups 111, and the exhaust air passage 1342 can communicate with the exhaust ports 132b of all the second cups 112. In this case, when it is needed to stretch the first cup 111 and compress the second cup 112, the plurality of first cups 111 are connected in series, and the plurality of second cups 112 are connected in series, the external air can enter the first cup 111 through the air inlet 131a of the first cup 111, and the air in the second cup 112 can be exhausted to the outside through the exhaust port 132b of the second cup 112. When it is needed to compress the first cup 111 and stretch the second cup 112, it is only needed to exhaust the air in the first cup 111 to the second cup 112. The above-mentioned arrangement of the plurality of first cups 111 and the plurality of second cups 112 can improve the suction pressure, so as to increase the flow.

[0035] It should be further explained that the number of the first bellows 111 can correspond to the number of the second bellows 112, of course, the number of the first bellows 111 can also not correspond to the number of the second bellows 112, the above is not restrictive, and can be set according to the needs of those skilled in the art, and the above is within the protection scope of the present application.

[0036] In addition, the driving member can also be driven by air pressure or hydraulic pressure, and the above driving mode by the motor 12 is not restrictive.

[0037] In an embodiment, when the first bellows 111, the second bellows 112 and the suction and exhaust passage 133 are all provided in plurality and equal in number, each suction and exhaust passage 133 is communicated with a group of the first bellows 111 and the second bellows 112, so that in the state that the first bellows 111 is compressed and the second bellows 112 is stretched, each first bellows 111 can exhaust to the second bellows 112 communicated therewith. At this time, when the first bellows 111 needs to be compressed and the second bellows 112 needs to be stretched, the gas in each first bellows 111 can be orderly compressed into the second bellows 112 communicated therewith. The above setting can avoid the turbulence of the airflow in the diaphragm pump 1, thereby further improving the suction pressure of the diaphragm pump 1.

[0038] In an embodiment, referring to Figure 3 and Figure 4 , the pump head assembly 13 further comprises an air inlet pipeline 1343 and an exhaust pipeline 1344, the air inlet pipeline 1343 is communicated with the suction gas path 1341 and the outside of the pump head assembly 13, and the exhaust pipeline 1344 is communicated with the exhaust gas path 1342 and the outside of the pump head assembly 13, so that the external gas can enter the first bellows 111 through the air inlet pipeline 1343, and the gas of the second bellows 112 can be exhausted to the outside through the exhaust pipeline 1344. At this time, the air inlet pipeline 1343 is communicated with the suction gas path 1341 and the outside of the pump head assembly 13, and the exhaust pipeline 1344 is communicated with the exhaust gas path 1342 and the outside of the pump head assembly 13, so that each suction port 131 and exhaust port 132 does not need to be individually communicated with the outside, thereby facilitating the arrangement of the exhaust port 132 and the suction port 131.

[0039] In an embodiment, the first bellows 111 and the second bellows 112 are symmetrically arranged in the diaphragm pump 1, thereby facilitating the arrangement of the first bellows 111 and the second bellows 112, and facilitating the arrangement of the suction and exhaust passage 133.

[0040] In an embodiment, in combination with Figures 3 to 5 , the first bellows 111 and the second bellows 112 are both provided in two, and the suction and exhaust passage 133 is provided in two, for example, the two first bellows 111 are located at the left side in Figure 3 , Figure 4 , and the two second bellows 112 are located at the right side in Figure 3 ,Figure 4 On the right side in the figure, the two first skin cups 111 are communicated through the suction gas path 1341, the two second skin cups 112 are communicated through the exhaust gas path 1342, the intake pipeline 1343 is communicated with the suction gas path 1341, the exhaust pipeline 1344 is communicated with the exhaust gas path 1342, and each suction and exhaust passage 133 is communicated with the first skin cup 111 and the second skin cup 112 which are not adjacent. Taking the suction and exhaust passage 133 as an example, the first suction and exhaust passage 1331 and the second suction and exhaust passage 1332 are communicated with the first skin cup 111 and the second skin cup 112 which are in the diagonal position respectively, at this time, the first suction and exhaust passage 1331 and the second suction and exhaust passage 1332 are longer, which can ensure that the gas flows stably from the first skin cup 111 to the second skin cup 112 when the first skin cup 111 is compressed and the second skin cup 112 is stretched, thereby further improving the stability of the whole diaphragm pump 1.

[0041] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of protection of the present application.

Claims

1. A diaphragm pump characterized in that, The application relates to a diaphragm pump. The diaphragm pump comprises a diaphragm assembly, a driving element, a pump head assembly, and a driving element. The diaphragm assembly comprises a first diaphragm and a second diaphragm. The driving element is in driving connection with the diaphragm assembly to compress or stretch the first diaphragm and the second diaphragm. The pump head assembly comprises air suction ports, air exhaust ports and air suction / exhaust channels. Each of the first diaphragm and the second diaphragm corresponds to a group of the air suction ports and the air exhaust ports.

2. The membrane pump of claim 1, wherein, The air exhaust port of the first diaphragm and the air suction port of the second diaphragm are in communication through the air suction / exhaust channel.

3. The membrane pump of claim 2, wherein, When the first diaphragm is stretched and the second diaphragm is compressed, the air suction port of the first diaphragm and the air exhaust port of the second diaphragm are opened, the air suction / exhaust channel is closed, external air enters the first diaphragm through the air suction port, and the second diaphragm exhausts air to the outside through the air exhaust port.

4. The membrane pump of claim 3, wherein, When the second diaphragm is stretched and the first diaphragm is compressed, the air suction port of the first diaphragm and the air exhaust port of the second diaphragm are closed, the air suction / exhaust channel is communicated, and the first diaphragm exhausts air to the second diaphragm through the air suction / exhaust channel.

5. The membrane pump according to any one of claims 1 to 4, characterized in that The first diaphragm and the second diaphragm are arranged in a plurality of groups.

6. The membrane pump of claim 5, wherein, The pump head assembly further comprises air suction channels and air exhaust channels.

7. The membrane pump of claim 5, wherein, The air suction channels are in communication with all the air suction ports of the first diaphragm.

8. The membrane pump according to any one of claims 1 to 4, characterized in that The air exhaust channels are in communication with all the air exhaust ports of the second diaphragm.

9. The membrane pump of claim 8, wherein, The air suction / exhaust channel is arranged in a plurality of groups.

10. The membrane pump of claim 1, wherein, The number of the first diaphragm, the second diaphragm and the air suction / exhaust channel is equal. Each of the air suction / exhaust channels is in communication with a group of the first diaphragm and the second diaphragm. When the first diaphragm is compressed and the second diaphragm is stretched, each of the first diaphragm can exhaust air to the second diaphragm. The pump head assembly further comprises an air inlet pipeline and an air exhaust pipeline. The air inlet pipeline is in communication with the air suction channels and the outside of the pump head assembly. The air exhaust pipeline is in communication with the air exhaust channels and the outside of the pump head assembly. The pump head assembly comprises a pump head, a cover plate, an air suction valve and an air exhaust valve. The cover plate covers the diaphragm assembly and is arranged in the pump head. The air suction ports and the air exhaust ports are arranged on the cover plate. The air suction / exhaust channels are arranged in the pump head. The air suction valve is arranged on the air suction port and can open or close the air suction port. The air exhaust valve is arranged on the air exhaust port and can open or close the air exhaust port. The air suction valve comprises a movable element and a closing element. The movable element is movably arranged on the air suction port. The closing element is arranged between the diaphragm assembly and the cover plate. The air suction valve and the air exhaust valve are one-way valves. The first diaphragm and the second diaphragm are symmetrically arranged on the diaphragm pump. The first diaphragm and the second diaphragm are arranged in two groups. Each of the air suction / exhaust channels is in communication with non-adjacent first diaphragm and second diaphragm. The driving element is an electric motor.

Images