Electrically commutated double diaphragm pumping

Abstract

The application discloses an electrically-controlled reversing double-diaphragm pump, which comprises a body provided with a shaft hole, a shaft rod slidably arranged in the shaft hole, a first diaphragm arranged at one end of the shaft rod, a second diaphragm arranged at the other end of the shaft rod, and a switching unit arranged on the body and used for controlling the shaft rod to slide back and forth along the shaft hole and driving the first diaphragm and the second diaphragm to be elastically deformed so as to realize the effect of conveying materials by sucking and discharging the materials from the outside. The switching unit is further connected with an electric control unit, and the electric control unit is used for controlling the switching unit to reverse by means of electric control, so that the electrically-controlled reversing double-diaphragm pump has the advantages of simple structure, stability and reliability and fast reversing.

Description

Technical Field

[0001] This utility model relates to a dual diaphragm pump, and in particular to an electrically controlled commutating dual diaphragm pump that uses electronic control for commutation. Background Technology

[0002] Existing diaphragm pumps mainly consist of a body with a shaft hole containing a shaft rod connected to a diaphragm component. The body also includes a switching unit that drives the shaft rod to slide back and forth along the shaft hole, causing the diaphragm component to elastically deform. The negative pressure generated by this deformation draws external material in and out of the body, thus achieving the purpose of material transport. However, the switching unit of existing diaphragm pumps typically uses a multi-directional valve for switching control, which is not only structurally complex but also has a slow switching speed. Utility Model Content

[0003] The purpose of this invention is to provide an electrically controlled commutating double diaphragm pump, which can be commutated by electronic control and has the advantages of simple structure, stable and reliable operation and fast commutation.

[0004] To achieve the above objectives, the present invention provides an electrically controlled reversing dual diaphragm pump, which includes a body. The body has an air chamber connected to an inlet flow channel and an outlet flow channel. A first drive chamber and a second drive chamber are respectively provided on opposite sides of the body. A first drive flow channel connects the first drive chamber to the air chamber, and a second drive flow channel connects the second drive chamber to the air chamber. The body further has a shaft hole connecting the first drive chamber and the second drive chamber. A drive unit is provided in the shaft hole. The drive unit has a slidably mounted shaft in the shaft hole, one end of which passes through the first drive chamber. The shaft has a first diaphragm member connected to the drive chamber, and the other end of the shaft passes through the second drive chamber and is connected to a second diaphragm member. The main body further includes a switching unit with a sliding space communicating with the air chamber. This sliding space connects a first push chamber and a second push chamber. The first push chamber is connected to the air intake passage. A control rod is slidably disposed within the sliding space. One end of the control rod passes through the first push chamber and has a first push surface, while the other end of the control rod passes through the second push chamber and has a second push surface. The area of ​​the second push surface is larger than the area of ​​the first push surface. A guide section is provided on the periphery, which can selectively connect the first drive flow channel to the exhaust flow channel or the second drive flow channel to the exhaust flow channel by sliding the control lever; the switching unit is provided with an electronic control unit, which has a first connecting flow channel connecting to the intake flow channel and a second connecting flow channel connecting to the second push chamber, and an electronically controlled valve is provided between the first connecting flow channel and the second connecting flow channel to selectively connect the first connecting flow channel and the second connecting flow channel by valve control; the main body is further provided with a conveying unit, which has a conveying section disposed outside the first drive chamber. The system includes a first cover and a second cover disposed outside the second drive chamber. The first cover and the first diaphragm form a first conveying chamber, and the second cover and the second diaphragm form a second conveying chamber. An input pipe is further connected between the first and second conveying chambers. The input pipe has an inlet and a first check valve is provided in the input pipe corresponding to each of the first and second conveying chambers. An output pipe is further connected between the first and second conveying chambers. The output pipe has an outlet and a second check valve is provided in the output pipe corresponding to each of the first and second conveying chambers.

[0005] The electrically controlled reversing dual diaphragm pump provided by this utility model, when the electrically controlled valve disconnects the first connecting channel and the second connecting channel, external gas enters the first pushing chamber and pushes the control lever to move towards the second pushing chamber, causing the conductive part to selectively connect the first driving channel and the exhaust channel. At this time, gas enters the second driving chamber through the second driving channel and pushes the second diaphragm to drive the shaft to move towards the second driving chamber. When the electrically controlled valve connects the first connecting channel and the second connecting channel, gas flows from the first connecting channel through the second connecting channel. Entering the second push chamber, the control lever is pushed in the opposite direction to move towards the first push chamber, causing the guide section to selectively connect the second drive channel and the exhaust channel. At this time, the gas will enter the first drive chamber through the first drive channel and push the first diaphragm to move the shaft towards the first drive chamber in the opposite direction. In this way, the shaft can be driven to reciprocate within the shaft hole, and the first and second diaphragms will be elastically deformed to draw external materials into the input pipe and then discharge them through the output pipe, thus achieving the purpose of conveying materials. It has the advantages of simple structure, stability and reliability, and fast reversal. Attached Figure Description

[0006] Figure 1 This is a perspective view of a preferred embodiment of the present invention.

[0007] Figure 2 This is an exploded view of a preferred embodiment of the present invention.

[0008] Figure 3 This is a cross-sectional view of a preferred embodiment of the present invention.

[0009] Figure 4 This is a cross-sectional view of the air chamber of a preferred embodiment of the present invention.

[0010] Figure 5 This is a partially enlarged cross-sectional view of the switching unit of a preferred embodiment of the present invention.

[0011] Figure 6 This is a partially enlarged cross-sectional view of the electronic control unit of a preferred embodiment of the present invention.

[0012] Figure 7 This is a partially enlarged cross-sectional view of the fixing base of a preferred embodiment of the present invention.

[0013] Figure 8 This is a schematic diagram of a preferred embodiment of the present invention in use.

[0014] Figure 9 This is a schematic diagram of another usage state of a preferred embodiment of the present invention.

[0015] Figure 10This is a schematic diagram illustrating another usage state of a preferred embodiment of the present invention.

[0016] Figure 11 This is a schematic diagram illustrating another usage state of a preferred embodiment of the present invention.

[0017] Explanation of symbols in the attached diagram:

[0018] 100 electronically controlled commutating dual diaphragm pump;

[0019] 10 Body; 10A Top Surface;

[0020] 10B bottom surface; 10C ring side surface;

[0021] 11 air chambers; 111 air intake channels;

[0022] 112 Exhaust flow channel; 113 First drive flow channel;

[0023] 114 Second drive flow channel;

[0024] 12 First drive chamber;

[0025] 13 Second drive chamber; 14 Shaft hole;

[0026] 15. Sliding part; 16. Buffer chamber;

[0027] 17 exhaust ports;

[0028] 20 drive units; 21 shafts;

[0029] 22 First diaphragm component; 23 Second diaphragm component;

[0030] 30 Switching unit; 31 Sliding space;

[0031] 32 First Propulsion Chamber; 33 Second Propulsion Chamber;

[0032] 34 control lever; 341 first push surface;

[0033] 342 Second propulsion surface; 35 Conducting section;

[0034] 351 Fitting groove; 352 Sliding block;

[0035] 353 conductive groove;

[0036] 40 Electronic control unit; 41 Intake seat;

[0037] 42 Fixed base; 43 First connecting flow channel;

[0038] 44 Second connecting flow channel; 45 Electrically controlled valve;

[0039] 451 Connecting seat; 452 Valve hole;

[0040] 453 First connecting hole; 454 Second connecting hole;

[0041] 455 coil body; 456 valve stem;

[0042] 457 Slide groove; 458 Third connecting hole;

[0043] 459 valve core;

[0044] 50 Conveying unit; 51 First cover;

[0045] 511 First conveying chamber; 52 Second cover;

[0046] 521 Second delivery chamber; 53 Input pipe;

[0047] 531 inlet; 54 first check valve;

[0048] 55 output tube; 551 outlet;

[0049] 56 Second check valve;

[0050] D gap. Detailed Implementation

[0051] Please see Figure 1 , Figure 2 as well as Figure 3As shown, an electrically controlled reversing dual diaphragm pump 100 is disclosed. The electrically controlled reversing dual diaphragm pump 100 includes a body 10, which has a gas chamber 11. A first drive chamber 12 and a second drive chamber 13, respectively connected to the gas chamber 11, are located on both sides of the body 10. A shaft hole 14 is provided between the first drive chamber 12 and the second drive chamber 13. A drive unit 20 is provided in the shaft hole 14. The drive unit 20 has a shaft 21. One end of the shaft 21 passes through the first drive chamber 12 and is connected to a first diaphragm member 22, while the other end of the shaft 21 passes through the second drive chamber 13 and is connected to a second diaphragm member 23. Simultaneously, a switching unit 30 is provided outside the gas chamber 11 on the body 10, which can guide the gas in the gas chamber 11 to the first drive chamber 12 or the second drive chamber 13. An electronic control unit 40 is also provided for controlling the switching unit 30. Furthermore, the body 10 is provided with… A conveying unit 50 has a first cover 51 disposed outside the first drive chamber 12 and a second cover 52 disposed outside the second drive chamber 13. The first cover 51 and the first diaphragm member 22 form a first conveying chamber 511, and the second cover 52 and the second diaphragm member 23 form a second conveying chamber 521. An input pipe 53 is further connected between the first conveying chamber 511 and the second conveying chamber 521. The input pipe 53 has an inlet 531, and a first check valve 54 is provided in the input pipe 53 corresponding to the first conveying chamber 511 and the second conveying chamber 521. Furthermore, an output pipe 55 is further connected between the first conveying chamber 511 and the second conveying chamber 521. The output pipe 55 has an outlet 551, and a second check valve 56 is provided in the output pipe 55 corresponding to the first conveying chamber 511 and the second conveying chamber 521.

[0052] Please see Figure 4 As shown, the air chamber 11 is connected to an inlet air passage 111 and an exhaust air passage 112. At the same time, the air chamber 11 is connected to the first drive chamber 12 by a first drive air passage 113, and the air chamber 11 is connected to the second drive chamber 13 by a second drive air passage 114. In this embodiment, the air chamber 11 is provided with a sliding part 15, and the openings of the exhaust air passage 112, the first drive air passage 113 and the second drive air passage 114 are arranged adjacent to the sliding part 15.

[0053] Please see Figure 5 As shown, the switching unit 30 has a sliding space 31, the sliding space 31 as follows: Figure 3The sliding space 31 is connected to the air chamber 11. A first pushing chamber 32 and a second pushing chamber 33 are respectively connected to both sides of the sliding space 31. The first pushing chamber 32 is connected to the air intake channel 111. Furthermore, a control rod 34 is slidably provided within the sliding space 31. One end of the control rod 34 passes through the first pushing chamber 32 and has a first pushing surface 341, while the other end of the control rod 34 passes through the second pushing chamber 33 and has a second pushing surface 342. The area of ​​the second pushing surface 342 is larger than the area of ​​the first pushing surface 341. A guide portion 35 is also provided on the periphery of the control rod 34. In this embodiment, the guide portion 35 has a fitting groove 351 circumferentially disposed on the periphery of the control rod 34. A sliding block 352 is provided within the fitting groove 351. The sliding block 352 abuts against the surface of the sliding portion 15, and a guide groove 353 is provided on the side of the sliding block 352 facing the sliding portion 15.

[0054] Please see Figure 6 as well as Figure 7 As shown, the electronic control unit 40 has an intake seat 41 disposed in the intake air passage 111 and a fixed seat 42 disposed in the switching unit 30. The intake seat 41 has a first connecting flow passage 43, and the fixed seat 42 has a second connecting flow passage 44. An electronically controlled valve 45 is further disposed between the first connecting flow passage 43 and the second connecting flow passage 44. In this embodiment, the electronically controlled valve 45 is a three-port two-position solenoid valve and has a connecting seat 451 disposed in the fixed seat 42. The connecting seat 451 has a valve hole 452, and the valve hole 452 connects to the first connecting flow passage 44. A first connecting hole 453 is provided between channels 43, and a second connecting hole 454 is provided between the valve hole 452 and the second connecting flow channel 44. In addition, a coil body 455 is provided at the valve hole 452. The coil body 455 is connected to a valve stem 456. One end of the valve stem 456 is provided with a groove 457 that connects to the valve hole 452. The other end of the valve stem 456 is provided with a third connecting hole 458 that connects to the groove 457. Furthermore, a valve core 459 is slidably disposed in the groove 457. There is a gap D between the valve core 459 and the inner wall of the groove 457.

[0055] Please also refer to Figure 8 as well as Figure 9As shown, when the user activates the electrically controlled reversing dual diaphragm pump 100, if the electrically controlled valve 45 controls the valve core 459 to block the first connecting hole 453, the second push chamber 33 is connected to the outside. This allows the gas entering through the intake channel 111 to flow into the first push chamber 32 and push the control rod 34 to move towards the second push chamber 33. The sliding block 352 slides with the control rod 34 and blocks the outside of the first drive channel 113 and the exhaust channel 112, allowing the first drive channel 113 and the exhaust channel 112 to communicate with each other through the guide groove 353. Simultaneously, some gas enters through the intake channel 111. The gas enters the air chamber 11, then passes through the sliding space 31 and enters the second drive chamber 13 through the second drive channel 114 to inflate the second drive chamber 13. The elastic deformation of the second diaphragm 23 drives the shaft 21 to move toward the second drive chamber 13 and causes the first diaphragm 22 to elastically deform and compress the gas in the first drive chamber 12. The gas is then discharged back to the outside through the first drive channel 113 and the exhaust channel 112. At the same time, the material in the outside is subjected to the negative pressure generated by the elastic deformation of the first diaphragm 22 and is drawn into the input pipe 53 through the inlet 531 and flows into the first conveying chamber 511 along the input pipe 53.

[0056] Please see Figure 10 as well as Figure 11As shown, when the electronically controlled valve 45 controls the valve core 459 to block the third connecting hole 458, the first connecting channel 43 and the second connecting channel 44 are interconnected, allowing gas to enter the valve hole 452 from the intake seat 41 along the first connecting channel 43, and then enter the second pushing chamber 33 from the second connecting channel 44. At this time, because the area of ​​the second pushing surface 342 is larger than the area of ​​the first pushing surface 341, the gas will push the control rod 34 to move towards the first pushing chamber 32, causing the sliding block 352 to slide with the control rod 34 and block the outside of the second driving channel 114 and the exhaust channel 112, so that the second driving channel 114 and the exhaust channel 112 are interconnected through the guide groove 353, allowing the gas to change to the first driving channel 458. The flow channel 113 enters the first drive chamber 12 to inflate the first drive chamber 12. Then, the elastic deformation of the first diaphragm 22 drives the shaft 21 to move toward the first drive chamber 12, and the elastic deformation of the second diaphragm 23 compresses the gas in the second drive chamber 13. The gas is then discharged back to the outside through the second drive flow channel 114 and the exhaust flow channel 112. At the same time, the material in the outside is drawn into the input pipe 53 through the inlet 531 by the negative pressure generated by the elastic deformation of the second diaphragm 23 and flows into the second conveying chamber 521 along the input pipe 53. The material that was originally drawn into the first conveying chamber 511 is compressed by the first diaphragm 22 and then passes through the output pipe 55 and is discharged from the outlet 551.

[0057] Therefore, the electrical control unit 40 can electrically control the shaft 21 to reciprocate along the axial direction of the shaft hole 14. This, through the elastic deformation of the first diaphragm 22 and the second diaphragm 23, creates a suction and discharge action, drawing external materials into the input pipe 53 and then discharging them through the output pipe 55. This achieves the purpose of material conveying and has the advantages of simple structure, stability, reliability, and rapid reversing. Please refer to [further details omitted]. Figure 5 As shown, the body 10 has a top surface 10A, a bottom surface 10B opposite to the top surface 10A, and an annular side surface 10C connected around the top surface 10A and the bottom surface 10B. The body 10 is provided with a buffer chamber 16, and the annular side surface 10C of the body 10 is provided with an exhaust hole 17 communicating with the buffer chamber 16. The exhaust channel 112 is connected between the air chamber 11 and the buffer chamber 16. In this way, when the gas is discharged from the exhaust channel 112, it will first flow into the buffer chamber 16 and then be discharged back to the outside through the exhaust hole 17, which can greatly reduce exhaust noise.

Claims

1. An electrically controlled commutating dual-diaphragm pump, characterized in that, Includes: A body having an air chamber connected to an inlet flow channel and an exhaust flow channel, and a first drive chamber and a second drive chamber respectively on two opposite sides of the body, with a first drive flow channel connecting the first drive chamber and the air chamber, and a second drive flow channel connecting the second drive chamber and the air chamber, and the body having a shaft hole connecting the first drive chamber and the second drive chamber. A drive unit has a slidable shaft disposed in the shaft hole, one end of the shaft passing through the first drive chamber and connected to a first diaphragm, and the other end of the shaft passing through the second drive chamber and connected to a second diaphragm. A switching unit is disposed on the main body and has a sliding space connected to the air chamber. The sliding space is connected to a first pushing chamber and a second pushing chamber. The first pushing chamber is connected to the air intake channel. A control rod is slidably disposed in the sliding space. One end of the control rod passes through the first pushing chamber and is provided with a first pushing surface, while the other end of the control rod passes through the second pushing chamber and is provided with a second pushing surface. The area of ​​the second pushing surface is larger than the area of ​​the first pushing surface. A guide portion is further provided on the periphery of the control rod. The guide portion can selectively connect the first driving channel and the exhaust channel or connect the second driving channel and the exhaust channel as the control rod slides. An electronic control unit is disposed in the switching unit and has a first connecting flow channel connecting the air intake channel and a second connecting flow channel connecting the second push chamber. An electronic control valve is further provided between the first connecting flow channel and the second connecting flow channel to selectively connect the first connecting flow channel and the second connecting flow channel through valve control means. A conveying unit has a first cover disposed outside a first drive chamber and a second cover disposed outside a second drive chamber. The first cover and the first diaphragm form a first conveying chamber, and the second cover and the second diaphragm form a second conveying chamber. An input pipe is further connected between the first and second conveying chambers. The input pipe has an inlet and a first check valve is provided in the input pipe corresponding to each of the first and second conveying chambers. An output pipe is further connected between the first and second conveying chambers. The output pipe has an outlet and a second check valve is provided in the output pipe corresponding to each of the first and second conveying chambers.

2. The electrically controlled commutating dual diaphragm pump according to claim 1, characterized in that, The electronic control unit has an air intake seat disposed in the air intake channel and a fixed seat disposed in the switching unit. The air intake seat has the first connecting channel and the fixed seat has the second connecting channel.

3. The electrically controlled commutating dual diaphragm pump according to claim 2, characterized in that, The electrically controlled valve is a three-port two-position solenoid valve with a connecting seat disposed on the fixed base. The connecting seat has a valve hole, a first connecting hole between the valve hole and the first connecting flow channel, and a second connecting hole between the valve hole and the second connecting flow channel. A coil body is further disposed at the valve hole, and a valve stem is connected to the coil body. One end of the valve stem has a groove connecting to the valve hole, and the other end of the valve stem has a third connecting hole connecting to the valve hole. A valve core is slidably disposed in the groove, and there is a gap between the valve core and the inner wall of the groove.

4. The electrically controlled commutating dual diaphragm pump according to claim 1, characterized in that, The air chamber is provided with a sliding part, and the exhaust flow channel, the first drive flow channel and the second drive flow channel are all disposed in the sliding part. The guiding part has a fitting groove arranged circumferentially around the control rod. A sliding block is disposed in the fitting groove. The sliding block abuts against the surface of the sliding part, and a guiding groove is provided on the side of the sliding block facing the sliding part. When the sliding block slides with the control rod and blocks the outside of the first drive flow channel and the exhaust flow channel, the first drive flow channel and the exhaust flow channel are connected to each other through the guiding groove. When the sliding block slides with the control rod and blocks the outside of the second drive flow channel and the exhaust flow channel, the second drive flow channel and the exhaust flow channel are connected to each other through the guiding groove.

5. The electrically controlled commutating dual diaphragm pump according to claim 1, characterized in that, The main body is provided with a buffer chamber, and an exhaust port communicating with the buffer chamber is provided on the periphery of the main body. The exhaust channel is connected between the air chamber and the buffer chamber.

6. The electrically controlled commutating dual diaphragm pump according to claim 5, characterized in that, The body has a top surface, a bottom surface opposite to the top surface, and an annular side surface connecting the top surface and the bottom surface, with the vent located on the annular side surface.

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