Back-blowing self-cleaning treatment device for air compressor filter

Abstract

The utility model relates to the technical field of air compressor filters, in particular to a blowback self-cleaning treatment device for an air compressor filter. The device comprises a pressure sensor arranged in a suction pipeline at an inlet of the air compressor, wherein the pressure sensor is connected with a differential pressure transmitter; an exhaust pipe of the air compressor is connected with an air source buffer tank; a gas outlet of the gas source buffer tank is connected with an exhaust control valve; the end, away from the air source buffer tank, of the exhaust control valve is connected with an air conveying pipeline, and a back flushing nozzle is arranged on the air conveying pipeline and located above the air compressor filter cartridge. The differential pressure transmitter and the exhaust control valve are connected with the controller so as to be used for receiving signals of the differential pressure transmitter and controlling opening and closing of the exhaust control valve according to the signals. According to the utility model, the technical problems that the precision is low and the cleaning effect is not ideal or excessive cleaning is easily caused because the self-cleaning of the filter cartridge is controlled only through a pressure value in the prior art are effectively solved.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressor filters, in particular to an air compressor filter backflush self-cleaning treatment device. Background Art

[0002] In modern industrial production, as an important device for providing a stable air source, the operating state of an air compressor directly affects the efficiency of the production line and the quality of products. As a key component for filtering the air entering the air compressor, the cleanliness and integrity of the air compressor filter element are even more crucial. However, when the equipment is severely aged, the filter element needs to be cleaned manually all the time, with frequent cleaning times and poor effects, which also increases the workload of on-site staff.

[0003] In response to the above problems, the patent document with the authorization announcement number CN217724979U discloses an air compressor filter backflush control device. An air outlet pipe is arranged at the upper end of a filter element inside an air filter, a backflush valve is arranged on the air outlet pipe, one end of the backflush valve is connected to the filter element, and the other end is connected to a backflush pipe. The air outlet pipe and the backflush pipe are connected to the air compressor. A pressure sensor and an air outlet valve are sequentially arranged on the air outlet pipe, and the pressure sensor, the air outlet valve and the air compressor are connected to a PLC controller. The PLC controller is connected to a relay and a display, and the relay is connected to the backflush valve. When the air filter self-cleans, first, a pressure value is set in the PLC controller. When the pressure detected by the pressure sensor is greater than the set value, the air outlet valve is closed through the PLC controller, the air inlet valve is opened, and the backflush valve is controlled to be opened one by one at regular intervals through the PLC controller and the relay to provide backflush gas for the air compressor.

[0004] It can be seen that the above device mainly receives the signal of the pressure sensor through the PLC controller and controls the opening and closing of the air inlet valve and the air outlet valve according to the received signal to realize gas backflush, so as to realize the self-cleaning of the filter element. However, it only relies on the pressure value measured by the pressure sensor to judge whether to start the self-cleaning program, and the change of the pressure value is affected by various factors such as system pressure fluctuation and sensor accuracy, which is extremely easy to cause misjudgment or delay, resulting in unsatisfactory cleaning effect or over-cleaning. Summary of the Utility Model

[0005] The utility model provides an air compressor filter backflush self-cleaning treatment device to solve the technical problem that the accuracy of controlling the self-cleaning of the filter cartridge only by the pressure value in the prior art is low, which is extremely easy to cause unsatisfactory cleaning effect or over-cleaning.

[0006] To solve the above problems, the air compressor filter backflush self-cleaning treatment device provided by the utility model adopts the following technical solutions:

[0007] An air compressor filter backwashing self-cleaning treatment device includes a pressure sensor disposed in the suction pipeline at the inlet of the air compressor. The pressure sensor is connected to a differential pressure transmitter to monitor the pressure signal in the suction pipeline through the pressure sensor and transmit it to the differential pressure transmitter. The exhaust pipe of the air compressor is connected to an air source buffer tank to buffer the pressure of the gas discharged from the exhaust pipe. The air outlet of the air source buffer tank is connected to an exhaust control valve to control the discharge of the gas in the air source buffer tank. One end of the exhaust control valve facing away from the air source buffer tank is connected to an air delivery pipeline, and an anti-blowing nozzle is disposed on the air delivery pipeline. The anti-blowing nozzle is located above the air compressor filter cartridge to blow the backwashing gas into the air compressor filter cartridge, thereby realizing the backwashing self-cleaning of the air compressor filter cartridge. The differential pressure transmitter and the exhaust control valve are connected to a controller to receive the signal from the differential pressure transmitter and control the opening and closing of the exhaust control valve according to the signal.

[0008] The beneficial effects of the air compressor filter backwashing self-cleaning treatment device provided by the present utility model are as follows:

[0009] 1. By setting a differential pressure transmitter and connecting the differential pressure transmitter to a pressure sensor disposed in the suction pipeline at the inlet of the air compressor, the differential pressure transmitter has strong anti-interference ability, can more accurately and directly transmit the pressure difference signal, and reflects the clogging degree and cleaning requirement of the air compressor filter cartridge through the pressure difference. When pollutants gradually accumulate inside the air compressor filter, resulting in a decrease in the filtering effect, the resistance (i.e., differential pressure) of the air passing through the air compressor filter gradually increases. When the pressure sensor detects that the differential pressure inside the air compressor filter increases and reaches the preset threshold, this signal is transmitted to the differential pressure transmitter, and the differential pressure transmitter converts this differential pressure signal into a standard electrical signal to ensure the accurate and stable transmission of the measurement data, thereby improving the control accuracy of the controller and ensuring the cleaning effect.

[0010] 2. By setting an air source buffer tank on the exhaust pipe of the air compressor, the flow rate and pressure balance of the gas in the pipeline can be adjusted through the air source buffer tank, improving the stability of the gas flow, alleviating the impact and damage caused by pressure fluctuations to the pipeline system, reducing safety accidents caused by pipeline or equipment breakage, thereby improving the working efficiency of the equipment and ensuring the continuous and stable operation of the air compressor.

[0011] Through the above settings, the present utility model effectively solves the technical problems in the prior art that the accuracy of controlling the self-cleaning of the filter cartridge only by the pressure value is low, which easily leads to unsatisfactory cleaning effect or over-cleaning.

[0012] Further, a venturi tube is disposed above the air compressor filter cartridge, and the anti-blowing nozzle is located above the venturi tube.

[0013] Further, the number of the air compressor filter cartridges is multiple, and the number of the anti-blowing nozzles is the same as the number of the air compressor filter cartridges.

[0014] Furthermore, multiple air compressor filter cartridges are evenly distributed at intervals within the air compressor housing.

[0015] Furthermore, the exhaust control valve is a diaphragm solenoid valve.

[0016] Furthermore, a manual control switch is provided on the controller.

[0017] Furthermore, the controller is a programmable logic controller.

[0018] Furthermore, a protective net is provided below the filter cartridge. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] By referring to the following detailed description with reference to the accompanying drawings, the above and other objects, features, and advantages of the exemplary embodiments of the present utility model will become readily understandable. In the drawings, several embodiments of the present utility model are shown in an exemplary rather than restrictive manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0020] Figure 1 is a schematic structural diagram of the air compressor filter backwashing and self-cleaning treatment device provided by the present utility model.

[0021] DESCRIPTION OF REFERENCE NUMERALS:

[0022] 1. Suction pipeline; 2. Differential pressure transmitter; 3. Air source buffer tank; 4. Exhaust pipe; 5. Diaphragm solenoid valve; 6. Gas transmission pipeline; 7. Backwashing nozzle; 8. Air compressor filter cartridge; 9. Controller; 10. Venturi tube; 11. Protective net. SPECIFIC EMBODIMENTS

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Those skilled in the art should understand that the following described embodiments are a part of the present disclosure, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present utility model.

[0024] It should be noted that the main concept of the air compressor filter backwashing and self-cleaning treatment device provided by the present utility model is as follows: By arranging a pressure sensor in the suction pipeline at the air compressor inlet and connecting the pressure sensor to a differential pressure transmitter, the pressure signal measured by the pressure sensor can be transmitted to the differential pressure transmitter. The differential pressure transmitter converts this differential pressure signal into a standard electrical signal. The differential pressure transmitter has good anti-interference ability and can accurately and stably transmit the signal to the controller to improve the control accuracy of the controller and ensure the cleaning effect.

[0025] After introducing the basic principle of the utility model, various non-limiting embodiments of the utility model are specifically introduced below. Any number of elements in the drawings is for illustration and not for limitation, and any naming is only for distinction and does not have any limiting meaning.

[0026] The principle and spirit of the present invention are explained in detail below with reference to several representative embodiments of the present invention.

[0027] Embodiment 1 of the air compressor filter back-blowing self-cleaning treatment device provided by the utility model:

[0028] like Figure 1 As shown, the air compressor filter back-blowing self-cleaning treatment device includes a pressure sensor, a differential pressure transmitter 2, an air source buffer tank 3, an exhaust control valve, a gas pipeline 6 and a controller 9.

[0029] About the pressure sensor and the differential pressure transmitter 2. The pressure sensor is arranged in the suction pipe 1 at the inlet of the air compressor, and the differential pressure transmitter 2 is connected to its output end. The pressure sensor is used to monitor the pressure signal in the suction pipe 1 and transmit it to the differential pressure transmitter 2.

[0030] About the gas source buffer tank 3 and the exhaust control valve. The air inlet of the gas source buffer tank 3 is connected to the exhaust pipe 4 of the air compressor to store the gas discharged from the exhaust pipe 4 and buffer the pressure of the gas in the tank. The exhaust control valve is connected to the gas outlet of the gas source buffer tank 3 to control the discharge of the gas in the gas source buffer tank 3.

[0031] Specifically, the exhaust control valve is a diaphragm solenoid valve 5 .

[0032] Regarding the gas pipeline 6. The gas pipeline 6 is connected to the end of the diaphragm solenoid valve 5 away from the gas source buffer tank 3, and a back-blowing nozzle 7 is provided on the gas pipeline 6. A venturi 10 is provided above the air compressor filter cartridge 8. The back-blowing nozzle 7 is located above the venturi 10 to blow the back-blowing gas into the air compressor filter cartridge 8, thereby realizing the back-blowing self-cleaning of the air compressor filter cartridge 8.

[0033] Specifically, there are multiple air compressor filter cartridges 8 , which are evenly spaced in the air compressor housing, and the number of backflush nozzles 7 is consistent with the number of air compressor filter cartridges 8 .

[0034] About the controller 9. The controller 9 is connected to the differential pressure transmitter 2 and the diaphragm solenoid valve 5 to receive the signal of the differential pressure transmitter 2 and control the opening and closing of the diaphragm solenoid valve 5 according to the signal. The controller 9 is also provided with a manual control switch to manually control the start of the program in the controller 9.

[0035] Specifically, the controller 9 is a programmable logic controller.

[0036] In addition, a protective net 11 is provided below the air compressor filter cartridge 8 to prevent external objects, sundries, animals, etc. from being sucked onto the air compressor filter cartridge 8, which may affect the use effect of the air compressor filter cartridge 8 and the air volume used in the air separation, and can also prevent personnel from accidentally touching the equipment and protect personal safety.

[0037] It should be noted that the controller 9 can also arbitrarily set the cleaning interval time and self-cleaning time according to user needs. The optimal cleaning interval time is 1 min, and the self-cleaning time is 0.2 s.

[0038] The working principle of the air compressor filter backwashing and self-cleaning treatment device provided by the present utility model is as follows: The pressure sensor continuously monitors the pressure in the suction pipeline 1. When the pressure sensor detects an increase in differential pressure and the air volume required for the air compressor to inhale decreases, this differential pressure signal is transmitted to the differential pressure transmitter 2. The differential pressure transmitter 2 converts it into a standard electrical signal and then transmits it to the controller 9. After receiving the signal, the controller 9 issues an instruction to control the diaphragm solenoid valve 5 to open, so as to discharge the gas in the air source buffer tank 3 to each backwashing nozzle 7 through the gas transmission pipeline 6, and the backwashing nozzle 7 blows the backwashing gas to the venturi tube 10 and is conveyed to the air compressor filter cartridge 8 through the venturi tube 10 to achieve the backwashing and self-cleaning of the air compressor filter cartridge 8;

[0039] The controller 9 sets the cleaning interval time and self-cleaning time according to user needs, and the controller 9 controls the diaphragm solenoid valve 5 to open and close according to the cleaning interval time and self-cleaning time to achieve the automatic backwashing and self-cleaning of the air compressor filter cartridge 8;

[0040] When the operator presses the manual control switch of the controller 9, the controller 9 can turn on the self-cleaning mode to complete the backwashing and self-cleaning of the air compressor filter cartridge 8.

[0041] Embodiment 2 of the air compressor filter backwashing and self-cleaning treatment device provided by the present utility model:

[0042] The main difference between it and Embodiment 1 is that:

[0043] In Embodiment 1, the exhaust control valve is a diaphragm solenoid valve.

[0044] In this embodiment, the exhaust control valve is an electric actuator.

[0045] Based on the above description in this specification, those skilled in the art can also understand the terms used as follows. For example, terms indicating orientation or positional relationships such as "upper", "lower", "front", "rear", "left", "right", "width", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientation or positional relationships shown in the drawings of this specification. They are only for the purpose of facilitating the description of the solution of the present utility model and simplifying the description, rather than explicitly or implicitly indicating that the devices or elements involved must have the specific orientation, be constructed and operate in the specific orientation. Therefore, the above terms of orientation or positional relationships cannot be understood or interpreted as limitations on the solution of the present utility model.

[0046] In addition, in the description of this specification, the meaning of "a plurality of" is at least two, such as two, three or more, etc., unless otherwise specifically and clearly defined.

Claims

1. An air compressor filter backflush self-cleaning treatment device, characterized in that It includes a pressure sensor disposed in the suction pipeline at the inlet of the air compressor. The pressure sensor is connected to a differential pressure transmitter to monitor the pressure signal in the suction pipeline through the pressure sensor and transmit it to the differential pressure transmitter. The exhaust pipe of the air compressor is connected to an air source buffer tank to buffer the pressure of the gas discharged from the exhaust pipe. The gas outlet of the air source buffer tank is connected to an exhaust control valve to control the discharge of the gas in the air source buffer tank. One end of the exhaust control valve facing away from the air source buffer tank is connected to an air delivery pipeline, and an anti-blowing nozzle is provided on the air delivery pipeline. The anti-blowing nozzle is located above the air compressor filter cartridge to blow the anti-blowing gas into the air compressor filter cartridge, thereby realizing the anti-blowing self-cleaning of the air compressor filter cartridge. The differential pressure transmitter and the exhaust control valve are connected to a controller to receive the signal from the differential pressure transmitter and control the opening and closing of the exhaust control valve according to the signal.

2. The air compressor filter backflush self-cleaning treatment device according to claim 1, wherein A venturi tube is provided above the air compressor filter cartridge, and the anti-blowing nozzle is located above the venturi tube.

3. The air compressor filter backwashing self-cleaning treatment device according to claim 1 or 2, characterized in that, The number of the air compressor filter cartridges is multiple, and the number of the anti-blowing nozzles is the same as that of the air compressor filter cartridges.

4. The air compressor filter backflush self-cleaning treatment device according to claim 3, characterized in that The multiple air compressor filter cartridges are evenly spaced in the air compressor housing.

5. The air compressor filter backflush self-cleaning treatment device according to claim 1 or 2, characterized in that, The exhaust control valve is a diaphragm solenoid valve.

6. The air compressor filter backflush self-cleaning treatment device according to claim 1 or 2, characterized in that, A manual control switch is provided on the controller.

7. The air compressor filter backflush self-cleaning treatment device according to claim 1 or 2, characterized in that The controller is a programmable logic controller.

8. The air compressor filter backflush self-cleaning treatment device according to claim 1 or 2, characterized in that, A protective net is provided below the filter cartridge.

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