Filtering type oil mist purifier with multi-channel electronic pressure difference signal acquisition sensor

Abstract

The utility model belongs to the technical field of environment-friendly air purification, and discloses a filter type oil mist purifier with a multi-channel electronic differential pressure signal acquisition sensor. Comprising a frame body, an air inlet section and a fan section are arranged on the frame body, and the fan section is arranged at the upper end of the air inlet section; a fan and a pressure difference signal acquisition sensor are arranged in the fan section, the pressure difference signal acquisition sensor is connected with a pressure difference acquisition module, a filter element body is arranged in the air inlet section, pitot tubes are arranged at the front end and the rear end of the filter element body, and the filter element body is connected with the pressure difference signal acquisition sensor used for detecting the front pressure and the rear pressure of the filter element body through the pitot tubes. And the air inlet section is arranged at the bottom of the filtering type oil mist purifier. The performance monitoring of the filter element body and the maintenance convenience of the equipment are realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of environmentally friendly air purification and relates to a filtering oil mist purifier with a multi-channel electronic pressure difference signal acquisition sensor. Background Art

[0002] Oil mist purifier is an industrial environmental protection equipment, usually used to treat the oil mist generated by atomization and evaporation of cutting fluid in metal processing such as turning, milling, drilling and grinding, so as to purify and recycle industrial oil mist, improve workshop air quality and equipment service life, and protect workers' occupational safety and health.

[0003] Filter-type oil mist purifiers are usually equipped with differential pressure signal acquisition sensors to monitor the resistance of the filter element and prompt the replacement of the filter element. However, the pointer-type differential pressure signal acquisition sensors are not easy to read and cannot provide timely prompts. In addition, the electronic differential pressure signal acquisition sensors that can be purchased are all single-channel differential pressure tests. They cannot test the differential pressures of multiple filter elements at the same time, cannot perform cumulative calculations of the filter element running time, and cannot achieve real-time storage and monitoring of differential pressure data, which is not convenient for filter element performance monitoring and equipment maintenance. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies in the above-mentioned background technology and to provide a filter-type oil mist purifier with a multi-channel electronic pressure difference signal acquisition sensor, which can digitally display the operating resistance of 1 to 3 filter cores at the same time, and has the functions of real-time storage of pressure difference data, adjustable pressure difference alarm range, and mobile terminal remote monitoring, and has the convenience of performance monitoring of the filter core and maintenance of the equipment.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a filtering oil mist purifier with a multi-channel electronic pressure difference signal acquisition sensor, comprising a frame, an air inlet section and a fan section are arranged on the frame, and the fan section is arranged at the upper end of the air inlet section; a fan and a pressure difference signal acquisition sensor are arranged in the fan section, the pressure difference signal acquisition sensor and the pressure difference acquisition module are connected, a filter core body is arranged in the air inlet section, a Pitot tube is arranged at the front and rear ends of the filter core body, the filter core body is connected to the pressure difference signal acquisition sensor for detecting the pressure before and after the core body through the Pitot tube, and the air inlet section is arranged at the bottom of the filtering oil mist purifier.

[0006] The filter-type oil mist purifier also includes a filter section and a high-efficiency section. The filter section, fan section and high-efficiency section are stacked up and down, and the specific order of setting can be set according to the actual working conditions. A filter core is provided in the filter section and the high-efficiency section. A Pitot tube is provided at the front and rear ends of the filter core. The filter core is connected to a pressure difference signal acquisition sensor for detecting the pressure before and after the core through the Pitot tube.

[0007] A medium-efficiency filter core is arranged in the filter section, and a high-efficiency filter core is arranged in the high-efficiency section.

[0008] Furthermore, the filter-type oil mist purifier with a multi-channel electronic pressure difference signal acquisition sensor also includes a support leg, which is arranged at the bottom of the frame.

[0009] Furthermore, the primary filter core is arranged inside the air inlet section, and a stainless steel wire filter is placed at the front end of the primary filter core.

[0010] Furthermore, an air outlet net is provided on the top of the filter-type oil mist purifier.

[0011] Furthermore, an air inlet is provided on the side of the air inlet section. The air inlet section is provided with air inlets on the left, right and rear sides, and can be provided with single-side, double-side or multi-side air inlet according to the equipment site layout and system design scheme.

[0012] Furthermore, the air inlet section, filter section, fan section, and high-efficiency section are connected by bolts, and the bolt holes on the connection surfaces are in the same position. In addition to the air inlet section and fan section, the filter section and high-efficiency section can be selected according to the on-site working conditions. The air outlet net can be installed on any section.

[0013] Furthermore, the primary filter core, medium filter core, and high-efficiency filter core placed in the air inlet section, filter section, and high-efficiency section are of the same size, and different filter core combinations can be adopted for different working conditions.

[0014] Furthermore, the filter cores of the primary filter core, the medium filter core, and the high efficiency filter core are made of low resistance and high efficiency nonwoven filter materials with different fiber diameters, such as glass fiber or high molecular polymer fiber. The primary filter core is preferably F5; the medium filter core is preferably F9; and the high efficiency filter core is preferably H13 or H14.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The filter-type oil mist purifier provided by the utility model adopts a segmented assembly structure, which can flexibly assemble multiple sections such as the air inlet section, the filter section, the fan section, and the air outlet section, and carry out different combinations of various filter cores, which is convenient for application in various working conditions and operation of the equipment, and has the advantages of high purification efficiency, long filter element life, small footprint, and strong applicability.

[0017] The filter-type oil mist purifier provided by the utility model has a pressure difference alarm function, which can provide timely reminders for filter element replacement. The utility model can accumulate and display the equipment operation time through the pressure difference acquisition module set up and use it to calculate the service life of each filter element. It also has the functions of real-time storage of pressure difference data, adjustable pressure difference alarm range, and mobile terminal remote monitoring, which is convenient for performance monitoring of the filter element and maintenance of the equipment.

[0018] The utility model proposes a filter-type oil mist purifier with a multi-channel electronic pressure difference signal acquisition sensor, which can digitally display the running resistance of 1 to 3 filter cores at the same time, solving the problem that pointer-type pressure difference signal acquisition sensors are difficult to read and the existing electronic pressure difference signal acquisition sensors can only display single-channel pressure difference. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 The utility model is a structural schematic diagram of a filter-type oil mist purifier with a multi-channel electronic pressure difference signal acquisition sensor (without the door).

[0021] Figure 2 This is a schematic diagram of the fan section door panel.

[0022] Figure 3 It is a connection diagram of the three-channel pressure difference acquisition module of the utility model.

[0023] Figure 4 It is a STM32 chip circuit diagram of the three-channel pressure difference acquisition module of the utility model.

[0024] Figure 5 It is the ADS1256 chip circuit diagram of the three-channel pressure difference acquisition module of the utility model.

[0025] Figure 6 It is a sensor circuit diagram of a three-channel pressure difference acquisition module of the utility model.

[0026] Figure 7 The utility model discloses a key circuit diagram of a three-channel pressure difference acquisition module.

[0027] Figure 8 The utility model discloses an RS485 communication circuit diagram of a three-channel differential pressure acquisition module.

[0028] Fig. 9 The utility model discloses an LCD interface circuit diagram of a three-channel pressure difference acquisition module.

[0029] Fig.10 The utility model discloses an EEPROM circuit diagram of a three-channel pressure difference acquisition module.

[0030] Fig.11 The utility model discloses a single-chip microcomputer crystal oscillator circuit diagram of a three-channel pressure difference acquisition module.

[0031] Fig.12 The utility model discloses a backlight circuit diagram of a three-channel pressure difference acquisition module.

[0032] Fig.13 It is a reference voltage circuit diagram of a three-channel pressure difference acquisition module of the utility model.

[0033] Fig.14 The utility model discloses an LED indicating circuit diagram of a three-channel pressure difference acquisition module.

[0034] Fig.15 The utility model discloses a 5V voltage stabilizing circuit diagram of a three-channel voltage difference acquisition module.

[0035] Fig.16 The utility model discloses a digital-analog power supply processing circuit diagram of a three-channel pressure difference acquisition module.

[0036] Fig.17 This is the LDO circuit diagram of the three-channel differential pressure acquisition module of the utility model. In the figure, 1. leg, 2. air inlet section, 3. filter section, 4. fan section, 5. high-efficiency section, 6. air outlet net, 7. differential pressure signal acquisition sensor, 8. air inlet, 9. stainless steel wire filter, 10. primary filter core, 11. medium-efficiency filter core, 12. fan, 13. high-efficiency filter core. DETAILED DESCRIPTION

[0037] The following is a further description of the utility model in conjunction with the accompanying drawings of the specification, but the utility model is not limited to the following embodiments. The pressure difference signal acquisition sensor is not limited to a specific model, as long as its working function is achieved. If no specific model is mentioned, it is not limited to a specific model, as long as its working function is achieved.

[0038] Example 1

[0039] A filter-type oil mist purifier with a multi-channel electronic pressure difference signal acquisition sensor, such as Figure 1-17 As shown, it includes a frame, on which an air inlet section 2 and a fan section 4 are arranged, and the fan section 4 is arranged at the upper end of the air inlet section 2; a fan 12 and a pressure difference signal acquisition sensor 7 are arranged in the fan section 4, and the pressure difference signal acquisition sensor 7 is connected to the pressure difference acquisition module, a filter core body is arranged in the air inlet section 2, and a Pitot tube is arranged at the front and rear ends of the filter core body. The filter core body is connected to the pressure difference signal acquisition sensor 7 for detecting the pressure before and after the core body through the Pitot tube, and the air inlet section 2 is arranged at the bottom of the filter-type oil mist purifier.

[0040] The filter-type oil mist purifier also includes a filter section 3 and a high-efficiency section 5. The filter section 3, the fan section 4, and the high-efficiency section 5 are stacked up and down, and the specific order of setting can be set according to the actual working conditions. A filter core is provided in the filter section 3 and the high-efficiency section 5, and a Pitot tube is provided at the front and rear ends of the filter core. The filter core is connected to a pressure difference signal acquisition sensor 7 for detecting the pressure before and after the core through the Pitot tube.

[0041] A medium-efficiency filter core 11 is arranged in the filter section 3 , and a high-efficiency filter core 13 is arranged in the high-efficiency section 5 .

[0042] The filter-type oil mist purifier with a multi-channel electronic pressure difference signal acquisition sensor 7 also includes a support leg 1, which is arranged at the bottom of the frame.

[0043] The filter core body arranged in the air inlet section 2 is a primary filter core body 10 , which is arranged inside the air inlet section 2 , and a stainless steel wire filter screen 9 is placed at the front end of the primary filter core body 10 .

[0044] An air outlet net 6 is provided on the top of the filter-type oil mist purifier.

[0045] An air inlet 8 is provided on the side of the air inlet section 2. The air inlet section 2 is provided with air inlets 8 on the left, right and rear sides, and can be provided with single-side, double-side or multi-side air inlet according to the equipment site layout and system design scheme.

[0046] The air inlet section 2, filter section 3, fan section 4, and high-efficiency section 5 are connected by bolts, and the bolt holes on the connection surfaces are in the same position. In addition to the air inlet section 2 and fan section 4, the filter section 3 and high-efficiency section 5 can be selected according to the on-site working conditions. The air outlet net 6 can be installed on any section.

[0047] The primary filter core 10, medium filter core 11 and high efficiency filter core 13 placed in the air inlet section 2, filter section 3 and high efficiency section 5 are of the same size, and different filter core combinations can be adopted for different working conditions.

[0048] The filter cores of the primary filter core 10, the medium filter core 11, and the high efficiency filter core 13 are made of low resistance and high efficiency non-woven filter materials with different fiber diameters, such as glass fiber or high molecular polymer fiber. The primary filter core 10 is preferably F5; the medium filter core 11 is preferably F9; and the high efficiency filter core 13 is preferably H13 or H14.

[0049] The pressure difference acquisition module is a three-channel pressure difference acquisition module, including a pressure difference acquisition circuit, a data processing chip circuit, a main control chip circuit, a communication circuit, and a storage circuit; the output end of the data processing chip circuit is connected to the main control chip circuit to realize the processing of the pressure difference data, and the output end of the pressure difference acquisition circuit is connected to the data processing chip circuit for transmitting the pressure difference signal to the data processing chip circuit; the data processing chip circuit and the main control chip circuit are respectively connected to the power supply circuit; the pressure difference acquisition circuit is connected to three pressure difference signal acquisition sensors 7; the main control chip circuit is respectively connected to a communication circuit for connecting the collected signal to the external transmission, a storage circuit for storage, a key circuit for parameter setting, and an LED indication circuit for work / warning / alarm prompts.

[0050] The main control chip circuit is also connected to an EEPROM circuit for storing and reading data.

[0051] The main control chip circuit is also connected to a SWD download interface for data download.

[0052] The main control chip circuit is also connected to an LCD interface circuit for displaying on an external display screen.

[0053] The main control chip circuit is also connected to a backlight control circuit for displaying the working status of the three pressure difference signal acquisition sensors 7 .

[0054] The main control chip circuit is also connected to a single-chip microcomputer crystal oscillator circuit for controlling the operating rhythm.

[0055] The chip in the main control chip circuit is the STM32 chip.

[0056] The data processing chip circuit is also connected to a digital-to-analog power processing circuit for converting digital signals into circuit signals.

[0057] The data processing chip circuit is also connected to the reference voltage circuit.

[0058] The chip in the data processing chip circuit is the ADS1256 chip.

[0059] The communication circuit is an RS485 communication circuit.

[0060] The power supply circuit includes a 5V voltage stabilizing circuit, which is connected to the power supply terminal and is electrically connected to a power supply board or an external power supply through the power supply terminal.

[0061] The main control chip circuit and the data processing chip circuit are connected to the 5V voltage stabilizing circuit through the LDO circuit respectively.

[0062] The 5V voltage stabilizing circuit is connected to the digital-analog power supply processing circuit.

[0063] EEPROM (Electrically Erasable Programmable Read-Only Memory) is used to store and read data. It is used to read and write configuration parameters such as sensor gain and drift parameters, alarm thresholds of each channel, etc., and can be saved when power is off.

[0064] The range of the differential pressure signal acquisition sensor 7 is 0-1Kpa. The differential pressure signal acquisition sensor 7 is connected to the filter element to be tested through a differential pressure tube to achieve monitoring.

[0065] The power supply terminal is detachable.

[0066] The sensor circuit receives the differential pressure signal through three differential pressure signal acquisition sensors 7, transmits it to the ADS1256 chip circuit for data processing, and then enters the STM32 chip circuit for further calculation and processing, and finally displays the differential pressure values ​​of the three channels through the LCD circuit display screen; the 485 communication interface can be connected to external storage, PLC and other devices; the key circuit can perform parameter setting operations; the LED circuit is used for work, early warning, and alarm prompts; the others are power supply and auxiliary circuits. The key circuit is equipped with four groups of buttons, namely "+", "-", "return", and "set", using a light touch micro-strip button. By pressing the setting key for 3 seconds and entering the setting, the "normal", "early warning", and "alarm" thresholds of each channel can be set separately and power-off memory.

[0067] The differential pressure signal acquisition sensor 7 has a differential pressure alarm function. The differential pressure range for normal use of the filter element can be 0 to 500Pa, and each channel displays a green light at this time; the differential pressure range for prompting the replacement of the filter element can be 500 to 600Pa, and one or several channels display a yellow light at this time; the differential pressure range for alarming that the filter element must be replaced can be 600 to 700Pa, and one or several channels display a red light and emit an alarm reminder sound; the differential pressure alarm range can be set manually and is not limited to the above-mentioned values; the above is completed by setting a multi-channel and differential pressure acquisition module.

[0068] The differential pressure signal acquisition sensor 7 has a running time display function through the connected differential pressure acquisition module, which can be used to calculate the service life of each filter core;

[0069] The differential pressure signal acquisition sensor 7 has the function of real-time storage of differential pressure data through the connected differential pressure acquisition module, and can be connected to the PC to derive the differential pressure curve of each filter element;

[0070] The differential pressure signal acquisition sensor 7 has the function of remote monitoring on a mobile terminal through the connected differential pressure acquisition module, and can monitor the real-time operation status of the equipment on a mobile phone or PC.

[0071] Although the utility model has been described in detail above with general descriptions and specific embodiments, it is obvious to those skilled in the art that some modifications or improvements can be made to the utility model. Therefore, these modifications or improvements made without departing from the spirit of the utility model are within the scope of protection claimed by the utility model.

Claims

1. A filter-type oil mist purifier with a multi-channel electronic pressure difference signal acquisition sensor, characterized in that: The invention comprises a frame, an air inlet section (2) and a fan section (4) are arranged on the frame, and the fan section (4) is arranged at the upper end of the air inlet section (2); a fan (12) and a pressure difference signal acquisition sensor (7) are arranged in the fan section (4), and the pressure difference signal acquisition sensor (7) is connected to a pressure difference acquisition module; a filter core body is arranged in the air inlet section (2), a Pitot tube is arranged at the front and rear ends of the filter core body, and the filter core body is connected to the pressure difference signal acquisition sensor (7) for detecting the pressure before and after the core body through the Pitot tube; and the air inlet section (2) is arranged at the bottom of the filter-type oil mist purifier.

2. A filter-type oil mist purifier with a multi-channel electronic pressure difference signal acquisition sensor as claimed in claim 1, characterized in that: The filter-type oil mist purifier also includes a filter section (3) and a high-efficiency section (5). The filter section (3), the fan section (4) and the high-efficiency section (5) are arranged in an upper and lower stacked manner, and the specific arrangement order can be arranged according to actual working conditions. A filter core is arranged in the filter section (3) and the high-efficiency section (5). A Pitot tube is arranged at the front and rear ends of the filter core. The filter core is connected to a pressure difference signal acquisition sensor (7) for detecting the pressure before and after the core through the Pitot tube.

3. The filter-type oil mist purifier with a multi-channel electronic pressure difference signal acquisition sensor as claimed in claim 1, characterized in that: An air outlet net (6) is arranged on the top of the filter-type oil mist purifier.

4. The filter-type oil mist purifier with a multi-channel electronic pressure difference signal acquisition sensor as claimed in claim 1, characterized in that: The filter-type oil mist purifier with a multi-channel electronic pressure difference signal acquisition sensor (7) also includes a support leg (1), and the support leg (1) is arranged at the bottom of the frame.

5. The filter-type oil mist purifier with a multi-channel electronic pressure difference signal acquisition sensor as claimed in claim 1, characterized in that: An air inlet (8) is provided on the side of the air inlet section (2).

6. The filter-type oil mist purifier with a multi-channel electronic pressure difference signal acquisition sensor as claimed in claim 1, characterized in that: The filter core body arranged in the air inlet section (2) is a primary filter core body (10), and the primary filter core body (10) is arranged inside the air inlet section (2).

7. The filter-type oil mist purifier with a multi-channel electronic pressure difference signal acquisition sensor as claimed in claim 2, characterized in that: A medium-efficiency filter core (11) is arranged in the filter section (3).

8. The filter-type oil mist purifier with a multi-channel electronic pressure difference signal acquisition sensor as claimed in claim 2, characterized in that: A high-efficiency filter core (13) is arranged in the high-efficiency section (5).

9. The filter-type oil mist purifier with a multi-channel electronic pressure difference signal acquisition sensor as claimed in claim 6, characterized in that: A stainless steel wire filter screen (9) is placed at the front end of the primary filter core body (10).

10. A filter-type oil mist purifier with a multi-channel electronic pressure difference signal acquisition sensor according to any one of claims 1 to 9, characterized in that: The pressure difference acquisition module is a three-channel pressure difference acquisition module, comprising a pressure difference acquisition circuit, a data processing chip circuit, a main control chip circuit, a communication circuit, and a storage circuit; the output end of the data processing chip circuit is connected to the main control chip circuit to realize the processing of pressure difference data, and the output end of the pressure difference acquisition circuit is connected to the data processing chip circuit for transmitting the pressure difference signal to the data processing chip circuit; the data processing chip circuit and the main control chip circuit are respectively connected to the power supply circuit; the pressure difference acquisition circuit is connected to three pressure difference signal acquisition sensors (7); the main control chip circuit is respectively connected to a communication circuit for connecting the collected signal to the outside for transmission, a storage circuit for storage, a key circuit for parameter setting, and an LED indication circuit for work / warning / alarm prompts.

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