Remote full-automatic control diaphragm pump exhaust system and method

Abstract

The invention relates to the technical field of diaphragm pumps, in particular to a remote full-automatic control diaphragm pump exhaust system and method. The exhaust system comprises an automatic controller, a power part, an exhaust unit and a liquid accumulation device, the liquid accumulation device is communicated with a diaphragm chamber of the diaphragm pump, the automatic exhaust unit is arranged between the diaphragm chamber and the liquid accumulation device and comprises an automatic exhaust assembly, and the automatic exhaust assembly comprises an exhaust valve. The power piece is connected with the exhaust valve and used for opening or closing the exhaust valve. The automatic controller comprises a control module, and the control module is electrically connected with the power piece and used for starting the power piece. The remote full-automatic control diaphragm pump exhaust system and the remote full-automatic control diaphragm pump exhaust method solve the problems that danger is brought to personal safety of an operator and negative effects such as diaphragm breaking, no action and exhaust lagging exist when exhaust needs to be conducted through manual operation or the fluid differential pressure effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of diaphragm pump, in particular to a remote full-automatic control diaphragm pump exhaust system and method. BACKGROUND

[0002] The diaphragm pump will produce bubbles and gas in the working process, which will affect the adsorption efficiency and flow of the pump, and may cause diaphragm damage in severe cases, so regular exhaust treatment is needed during use or when the gas reaches a certain standard.

[0003] The current diaphragm pump usually adopts manual operation to open the valve or exhaust through fluid differential pressure, but manual operation needs frequent manual operation on the one hand, and there is also a risk on the other hand: when encountering harsh conditions such as high temperature, toxicity and corrosion, it will bring danger to the personal safety of the operator. The fluid differential pressure method brings negative effects such as diaphragm rupture, inaction and exhaust lag to the stability, response speed and gas volume control accuracy of the exhaust structure due to the influence of variables such as machining precision, control precision and site environment, so it cannot play the intended function. SUMMARY

[0004] The present application aims to provide a remote full-automatic control diaphragm pump exhaust system and method to solve the problems of danger to the personal safety of the operator and negative effects such as diaphragm rupture, inaction and exhaust lag caused by manual operation or exhaust through fluid differential pressure.

[0005] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a remote full-automatic control diaphragm pump exhaust system, comprising an automatic controller, a power component, an exhaust unit and a liquid accumulation device, the liquid accumulation device is in communication with the diaphragm chamber of the diaphragm pump, the automatic exhaust unit is arranged between the diaphragm chamber and the liquid accumulation device, the automatic exhaust unit comprises an automatic exhaust assembly, the automatic exhaust assembly comprises an exhaust valve, the power component is connected with the exhaust valve and is used for opening or closing the exhaust valve; the automatic controller comprises a control module, the control module is electrically connected with the power component and is used for starting the power component.

[0006] The beneficial effects of the present application are as follows: The present application opens or closes the exhaust valve through the power component to start or stop exhaust, and the automatic controller can control the start of the power component to indirectly control the start or stop of the exhaust valve, without manual operation, which reduces the workload of manual operation and does not affect the personal safety of the operator.

[0007] Further, the diaphragm pump, the exhaust valve and the liquid accumulation device form an exhaust passage, the automatic exhaust assembly further comprises a one-way valve, the one-way valve is arranged on the exhaust passage and is connected in series with the exhaust valve, the inlet end of the one-way valve is in communication with the diaphragm pump, and the outlet end is in communication with the liquid accumulation device.

[0008] The beneficial effect of the present scheme is that the one-way valve cooperates with the exhaust valve to form a reverse suction prevention structure, which avoids the reverse flow of medium in the exhaust system during the suction and discharge strokes of the diaphragm pump, and ultimately realizes exhaust emptying.

[0009] Further, a transparent observation part is arranged on the exhaust passage.

[0010] The beneficial effect of the present scheme is that the working medium state of the diaphragm pump can be observed through the observation part, which can determine the type of working medium and whether there is obvious un-exhausted gas, thereby facilitating timely verification of the exhaust effect.

[0011] Further, the pipeline of the exhaust passage includes a hard pipe and a transparent flexible pipe in communication, and the exhaust valve and the one-way valve are both connected with the hard pipe.

[0012] The beneficial effect of the present scheme is that compared with the hard pipe, the transparent flexible pipe can be bent to change the extension direction of the exhaust passage, thereby ensuring that the pipeline communicates the diaphragm chamber with the fluid accumulation device. At the same time, the transparent flexible pipe in the present scheme forms an observation part, and when the transparent flexible pipe is bent, a curved transparent part is formed. When there are bubbles in the fluid, the bubbles will move relative to the fluid, so that they are more easily observed from the outside. Therefore, the observation effect of the transparent flexible pipe in the present scheme is better.

[0013] Further, the automatic exhaust unit further includes a manual valve, which is connected in parallel with the automatic exhaust assembly.

[0014] The beneficial effect of the present scheme is that the manual valve in the present scheme forms a manual channel, which can be used as a backup channel when the exhaust valve and its channel fail, and can also be used to verify the patency and working integrity of the channel where the exhaust valve is located.

[0015] Further, the power member is a gas source, and the automatic exhaust unit further includes a gas valve, which is located between the gas source and the exhaust valve.

[0016] The beneficial effect of the present scheme is that the exhaust valve in the present scheme is in a pneumatic form, which avoids the control of the exhaust valve being disturbed by external factors such as medium and power supply, thereby ensuring the stability and accuracy of the opening and closing of the exhaust valve.

[0017] Further, a gas source adjusting device is arranged between the power member and the gas valve.

[0018] The beneficial effect of the present scheme is that the gas source adjusting device can ensure stable input of compressed air, thereby further improving the stability and accuracy of the opening and closing of the exhaust valve.

[0019] Further, the automatic exhaust unit is provided with multiple units.

[0020] The beneficial effect of this solution is that when a multi-cylinder diaphragm pump or multiple diaphragm pumps are used in parallel, multiple automatic exhaust units can exhaust air from multiple diaphragm pumps respectively.

[0021] This invention also discloses a remote fully automatic control method for venting a diaphragm pump, employing any of the aforementioned remote fully automatic control diaphragm pump venting systems, comprising the following steps: Step 1: Determine the operating frequency of the diaphragm pump. When the operating frequency is less than or equal to 5Hz, control the exhaust valve to open. Step 2: When the operating frequency is greater than 5Hz, the operating frequency is divided into low frequency stage, medium frequency stage and high frequency stage. The operating frequency of the low frequency stage is greater than 5Hz and less than or equal to 15Hz, the operating frequency of the medium frequency stage is greater than 15Hz and less than or equal to 25Hz, and the operating frequency of the high frequency stage is greater than 25Hz. Step 3: Keep the exhaust valve in the normally closed state, and control the exhaust valve to open according to the operating frequency: When the operating frequency is in the low-frequency stage, after each frequency increase and stabilization for 1.5~2.5 minutes, the exhaust valve is opened for 3.5~4.0 seconds. When the operating frequency is in the medium frequency stage, the exhaust valve is opened every 11.5~12.5 hours, and the opening time is 2.5~2.8 seconds. When the operating frequency is in the high-frequency stage, the exhaust valve is opened every 7.5~8.5 hours, and the opening time is 1.0~1.5 seconds.

[0022] The beneficial effects of this solution are as follows: By combining the automatic venting time and start-up duration with the operating frequency of the diaphragm pump, different venting modes are activated under different operating conditions of the diaphragm pump. In the low and medium frequency stages, as much gas as possible is vented out, while in the high frequency stage, the automatic venting and the operation of the diaphragm pump do not interfere with each other. This allows venting to be carried out in different operating stages of the diaphragm pump, making it highly adaptable.

[0023] In the low-frequency stage, stabilizing for 1.5 to 2.5 minutes after each frequency increase ensures that the diaphragm pump finishes the previous stroke and resets before starting to exhaust, thus avoiding any adverse effects of exhaust on the operation of the diaphragm pump.

[0024] Furthermore, when there are multiple automatic exhaust units, step 3 sequentially opens the exhaust valves of different automatic exhaust units, and opens the next exhaust valve after the previous exhaust valve is closed.

[0025] The beneficial effects of this solution are: exhausting multiple diaphragm chambers one by one allows the air source to open the exhaust valves of different automatic exhaust units one by one, so only one air source is needed, simplifying the system structure and control logic. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the connection of the exhaust system in an embodiment of the present invention. Detailed Implementation

[0027] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: diaphragm pump 1, power unit 2, air source regulating device 3, exhaust valve 4, check valve 5, manual valve 6, air valve 7, silencer 8, liquid collection device 9, and air filter 10.

[0028] Example The implementation examples are basically as follows Figure 1 As shown, this invention discloses a remote fully automatic control diaphragm pump exhaust system, including an automatic controller, a power unit 2, an exhaust unit, and a liquid collection device 9. The liquid collection device 9 is a container for holding gas and the working medium discharged from the diaphragm chamber. The top of the liquid collection device 9 is connected to an existing air filter 10 for discharging gas entering the liquid collection device 9 and balancing the air pressure inside and outside the liquid collection device 9. There are three exhaust units, each corresponding to one of the three diaphragm chambers of the three-cylinder diaphragm pump 1. The liquid collection device 9 is connected to all three diaphragm chambers simultaneously, and the pipes between the liquid collection device 9 and the diaphragm chambers include rigid pipes and transparent flexible pipes. The transparent flexible pipes form a transparent observation window, and the exhaust units are connected to the rigid pipes.

[0029] The automatic venting unit includes an automatic venting assembly, a pneumatic valve 7, and a manual valve 6. The automatic venting assembly includes an exhaust valve 4 and a check valve 5. In this embodiment, the exhaust valve 4 is an existing pneumatic exhaust valve 4. The inlet end of the pneumatic exhaust valve 4 is connected to the diaphragm pump 1, and the outlet end is connected to the inlet end of the check valve 5. The outlet end of the check valve 5 is connected to the liquid collection device 9.

[0030] The manual valve 6 is connected in parallel with the automatic venting assembly. In this embodiment, the manual valve 6 is an existing shut-off valve. The inlet end of the shut-off valve is connected to the diaphragm pump 1, and the outlet end is connected to the liquid collection device 9. When the passage where the automatic venting assembly is located fails, manual venting can still be performed through the manual valve 6.

[0031] In this embodiment, the power component 2 uses an air source; specifically, a high-pressure air pump is used. An air source regulating device 3 is also provided between the power component 2 and the air valve 7, with the air valve 7 located between the air source regulating device 3 and the exhaust valve 4. The automatic controller includes a control module; specifically, an existing PLC controller is used in this embodiment. The automatic controller is electrically connected to the power component 2 and the air valve 7, and is used to control the start or stop of the power component 2 and the air valve 7.

[0032] This invention also discloses a remote fully automatic control method for venting a diaphragm pump 1, which employs the aforementioned remote fully automatic control system for venting a diaphragm pump 1 and includes the following steps: Step 1: Before the diaphragm pump 1 is started, the power unit 2 is in working condition and all three air valves 7 are in the open state. High-pressure air enters the three exhaust valves 4 through the air valves 7, causing the exhaust valves 4 to close and the exhaust to stop. When the exhaust system is working, the operating frequency of the three diaphragm chambers of the diaphragm pump 1 is first determined. When the operating frequency of any diaphragm chamber is less than or equal to 5Hz, the automatic controller sends a signal to the power unit 2 and the air valve 7 corresponding to the diaphragm chamber to control the power unit 2 to work. At the same time, the exhaust valve 4 corresponding to the diaphragm chamber is opened. At this time, the automatic exhaust unit corresponding to the diaphragm chamber is in the exhaust state. Step 2: Taking any diaphragm chamber and its corresponding automatic exhaust unit as an example, when the operating frequency of the diaphragm chamber is greater than 5Hz, the operating frequency is divided into low frequency stage, medium frequency stage and high frequency stage. The operating frequency of the low frequency stage is greater than 5Hz and less than or equal to 15Hz, the operating frequency of the medium frequency stage is greater than 15Hz and less than or equal to 25Hz, and the operating frequency of the high frequency stage is greater than 25Hz. Step 3: Keep exhaust valve 4 in the normally closed state, and open exhaust valve 4 according to the operating frequency: When the operating frequency is in the low frequency stage, after each frequency increase and stabilization for 2 minutes, the exhaust valve 4 is opened for 3.8 seconds. When the operating frequency is in the medium frequency stage, the exhaust valve 4 is opened every 12 hours, and the opening time is 2.6 seconds. When the operating frequency is in the high-frequency stage, the exhaust valve 4 is opened every 8 hours, and the opening time is 1.3 seconds. When there are multiple automatic exhaust units, the three diaphragm chambers are numbered G1, G2, and G3 in sequence. The opening sequence of the cylinders Y1, Y2, and Y3 corresponding to the diaphragm chambers G1, G2, and G3 corresponds to the 120° phase angle of the crankshaft. The base point is the diaphragm stroke position in the diaphragm chamber G1. When performing automatic exhaust in step 3, the diaphragm chambers G1, G3, and G2 are opened in sequence for exhaust. After the previous exhaust valve 4 is closed, the next diaphragm chamber is automatically vented. Taking diaphragm chamber G1 as an example, when venting diaphragm chamber G1, first close the air valve 7 corresponding to diaphragm chamber G1, and open the exhaust valve 4 corresponding to diaphragm chamber G1. The gas in diaphragm chamber G1 is discharged into liquid accumulation device 9 through exhaust valve 4 and one-way valve 5, and finally discharged from air filter 10. After the opening time is reached, the air valve 7 corresponding to diaphragm chamber G1 is opened, and the high-pressure gas controls exhaust valve 4 to close exhaust valve 4 and stop venting.

[0033] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A remotely controlled fully automatic diaphragm pump exhaust system, characterized in that: The device includes an automatic controller, a power unit, an exhaust unit, and a liquid collection device. The liquid collection device is connected to the diaphragm chamber of the diaphragm pump. The automatic exhaust unit is located between the diaphragm chamber and the liquid collection device. The automatic exhaust unit includes an automatic exhaust assembly, which includes an exhaust valve. The power unit is connected to the exhaust valve and is used to open or close the exhaust valve. The automatic controller includes a control module, which is electrically connected to the power unit and is used to start the power unit.

2. The remote fully automatic control diaphragm pump exhaust system according to claim 1, characterized in that: The diaphragm pump, the vent valve, and the liquid collection device form a venting passage. The automatic venting assembly also includes a one-way valve, which is located on the venting passage and connected in series with the vent valve. The inlet end of the one-way valve is connected to the diaphragm pump, and the outlet end is connected to the liquid collection device.

3. The remote fully automatic control diaphragm pump exhaust system according to claim 2, characterized in that: A transparent observation section is provided in the exhaust passage.

4. The remote fully automatic control diaphragm pump exhaust system according to claim 3, characterized in that: The exhaust passage includes a connected rigid pipe and a transparent flexible pipe, and both the exhaust valve and the check valve are connected to the rigid pipe.

5. The remote fully automatic control diaphragm pump exhaust system according to claim 2, characterized in that: The automatic exhaust unit also includes a manual valve, which is connected in parallel with the automatic exhaust assembly.

6. The remote fully automatic control diaphragm pump exhaust system according to claim 2, characterized in that: The power source is an air source, and the automatic exhaust unit also includes an air valve, which is located between the air source and the exhaust valve.

7. A remote fully automatic control diaphragm pump exhaust system according to claim 6, characterized in that: An air source regulating device is also provided between the power component and the air valve.

8. The remote fully automatic control diaphragm pump exhaust system according to claim 1, characterized in that: There are multiple automatic exhaust units.

9. A remote fully automatic control method for venting a diaphragm pump, characterized in that: The remote fully automatic control diaphragm pump exhaust system according to any one of claims 1 to 8 includes the following steps: Step 1: Determine the operating frequency of the diaphragm pump. When the operating frequency is less than or equal to 5Hz, control the exhaust valve to open. Step 2: When the operating frequency is greater than 5Hz, the operating frequency is divided into low frequency stage, medium frequency stage and high frequency stage. The operating frequency of the low frequency stage is greater than 5Hz and less than or equal to 15Hz, the operating frequency of the medium frequency stage is greater than 15Hz and less than or equal to 25Hz, and the operating frequency of the high frequency stage is greater than 25Hz. Step 3: Keep the exhaust valve in the normally closed state, and control the exhaust valve to open according to the operating frequency: When the operating frequency is in the low-frequency stage, after each frequency increase and stabilization for 1.5~2.5 minutes, the exhaust valve is opened for 3.5~4.0 seconds. When the operating frequency is in the medium frequency stage, the exhaust valve is opened every 11.5~12.5 hours, and the opening time is 2.5~2.8 seconds. When the operating frequency is in the high-frequency stage, the exhaust valve is opened every 7.5~8.5 hours, and the opening time is 1.0~1.5 seconds.

10. A remote fully automatic control method for venting a diaphragm pump according to claim 9, characterized in that: When there are multiple automatic exhaust units, step 3 opens the exhaust valves of different automatic exhaust units in sequence, and opens the next exhaust valve after the previous exhaust valve is closed.

Images