Filter element detection device

Abstract

The utility model provides a filter element detection device which comprises a filter, a negative pressure fan, a positive pressure fan and a dust concentration meter, a top outlet of the filter is connected with an inlet of the negative pressure fan, an outlet of the negative pressure fan is connected with an inlet of the dust concentration meter, an outlet of the positive pressure fan is connected to the top of the filter, and an outlet of the dust concentration meter is connected with an outlet of the negative pressure fan. The blowback device is used for blowback of the filter; a pattern plate is arranged in the filter and used for fixedly installing a filter element to be detected, and the filter element is matched with the pattern plate in structure and specification. According to the utility model, the filter element is arranged in the filter and is matched with the pattern plate, the dust concentration of the filtered material is detected by utilizing the negative pressure fan and the dust concentration meter, whether the detected concentration changes or not during normal use is judged, if the detected concentration changes, the filter element is damaged, and otherwise, the filter element is normal; the quality of the filter element can be automatically detected without manual interference, and the detection efficiency and accuracy are improved; the device is simple in structure, easy and convenient to operate, low in detection cost and capable of meeting the large-scale production requirement.

Description

TECHNICAL FIELD

[0001] The utility model belongs to filter equipment technical field relates to a filter element detection device. BACKGROUND

[0002] In modern industrial production process, filter equipment is one of the types of equipment that is often used, which can be used for gas-solid separation, solid-liquid separation and other process. Filter element is an important functional component in gas-solid separation equipment, which is an important factor to ensure the gas-solid separation effect. Different separation effects can be achieved according to the size of filter element aperture. Since filter element is one of consumables, its quality directly affects production efficiency and cost. After a period of use, its filtering function and effect need to be judged, that is, whether the filter element is damaged or blocked by dust particles.

[0003] At present, in most cases, whether the filter element is damaged mainly depends on manual visual inspection, which is low in efficiency and poor in accuracy, slow in inspection speed, and cannot meet the needs of large-scale production; when the filter element aperture size is small, it is difficult for the naked eye to find the tiny damage, which is easy to cause missed detection, and the inspection result is greatly affected by the experience and fatigue degree of the operator. Therefore, developing a device capable of quickly and accurately detecting the performance of filter element has important significance for improving separation efficiency and reducing cost.

[0004] In order to realize the detection of filter element performance, it needs to be applied to the filtering and dust removal process, and the dust concentration in the gas phase after filtration is detected to judge whether the filter element is damaged. CN 118392735A discloses an air dust concentration detection device and method, which comprises a detection box, and an air inlet pipe and an air outlet pipe coaxially arranged, which are respectively fixedly inserted at both ends of the detection box, wherein a detection gap is arranged between the air inlet pipe and the air outlet pipe, a dust concentration detector is fixedly installed in the detection box, the dust concentration detector comprises a laser emitter and a laser receiver, which are respectively arranged on both sides of the detection gap; a negative pressure pipe is detachably installed at the exhaust end of the air outlet pipe, wherein a negative pressure fan is fixedly installed in the negative pressure pipe, and the inner walls of the air inlet pipe and the air outlet pipe are provided with exhaust components for continuous exhaust. The structural design of the device is mainly to detect the dust concentration, and does not involve the detection of filter element performance, and the corresponding component structure and function are different.

[0005] CN 211648614U discloses a biological organic fertilizer production air induction machine, including air induction machine and controller, the air induction machine includes cover and air inlet pipe on the cover, air inlet pipe is equipped with filter mechanism, the filter mechanism inside from the side of air induction machine is equipped with water filter cavity, detection cavity and filter cavity in proper order, the filter mechanism top is equipped with water collecting pipe and water inlet pipe, water filter cavity top is fixedly installed with atomizing nozzle, the middle part of water filter cavity bottom end is equipped with water outlet pipe, the water outlet pipe bottom is fixedly connected with collection box, the collection box is equipped with drain pipe and deslagging pipe, the collection box is equipped with filter core, the detection cavity top and bottom are fixedly installed with dust concentration sensor. The structure of the air induction machine is relatively complex, has the functions of conveying gas, filtering dust, dust settling, etc., which is actually gas-solid separation of the gas entering the air induction machine, and does not involve the detection of the performance of the filter core.

[0006] In summary, for the detection of the filter core after use, a corresponding detection device needs to be designed to detect the dust concentration of the filtered gas of the filter core to be detected to determine whether the filter core is damaged and improve the detection efficiency, avoid human interference and improve the accuracy of detection. Practical new type content

[0007] In view of the problems existing in the prior art, the purpose of the present application is to provide a filter core detection device, which is used for filtering and dust removal by placing the filter core to be detected in the filter, and setting a negative pressure fan and a dust concentration instrument to detect the dust concentration in the gas after dust removal, so as to determine whether the filter core is damaged and its performance is good or bad, so as to realize automatic detection of the filter core, eliminate human factor interference and improve the detection efficiency.

[0008] To achieve this purpose, the present application adopts the following technical solutions:

[0009] The filter core detection device comprises a filter, a negative pressure fan, a positive pressure fan and a dust concentration instrument, the top outlet of the filter is connected with the inlet of the negative pressure fan, the outlet of the negative pressure fan is connected with the inlet of the dust concentration instrument, the outlet of the positive pressure fan is connected to the top of the filter for back blowing of the filter, a flower plate is arranged in the filter, the flower plate is used for fixedly installing the filter core to be detected, and the structure and specification of the filter core are matched with those of the flower plate.

[0010] The utility model discloses a filter element detection device, which belongs to the technical field of filter element detection, and can realize automatic detection of filter elements.

[0011] The following is the preferred technical scheme of the utility model, but not as the restriction of the technical scheme provided by the utility model, through the following technical scheme, the technical purpose and beneficial effect of the utility model can be better achieved and realized.

[0012] As the preferred technical scheme of the utility model, the lower part of the filter is provided with a material inlet, and the bottom is provided with a material outlet, the material inlet is connected with a first material buffer tank, and the material outlet is connected with a second material buffer tank.

[0013] A rotary valve is arranged on the conveying pipeline between the first material buffer tank and the material inlet.

[0014] In the utility model, the rotary valve arranged on the conveying pipeline connected in front of the material inlet of the filter can control the uniform conveying of the material, and the first material buffer tank is used to buffer the particulate matter to be detected.

[0015] The positive pressure fan blows back into the filter, blows down the particulate matter adsorbed by the filter element, and leaves from the bottom material outlet for buffering.

[0016] As the preferred technical scheme of the utility model, the flower plate and the filter element are combined and assembled into the filter, and the flower plate is located above the filter element.

[0017] As the preferred technical scheme of the utility model, the flower plate is in the form of a flat plate, and the flower plate is provided with holes for inserting and fixing the filter element.

[0018] As the preferred technical scheme of the utility model, at least two filter elements are installed on a flower plate, for example, two, three, four or five, and the like, and an electromagnetic valve is independently arranged above the corresponding position of the flower plate for each filter element.

[0019] In this invention, solenoid valves are installed above the positions of the filter elements on the perforated plate to control the working time of the filter elements. The operation process includes: after the negative pressure fan and its front and rear valves are opened, one of the solenoid valves is opened, and the material is drawn in by negative pressure and adsorbed onto the surface of the filter element. The filter element is judged to be damaged based on whether the value of the dust concentration meter changes. After the filter element is checked, the rotary valve, the negative pressure fan and its front and rear valves are closed in sequence, and the positive pressure fan and its front and rear valves are opened to backflush the filter element. The material falls into the buffer tank by gravity, and then the solenoid valve corresponding to the filter element is closed. Then the above steps are repeated to check the other filter elements in the filter in sequence.

[0020] As a preferred technical solution of this utility model, the perforated plate includes a metal plate or a plastic plate.

[0021] As a preferred technical solution of this utility model, the filtration accuracy of the filter element is 1 to 5 μm, such as 1 μm, 1.5 μm, 2 μm, 2.5 μm, 3 μm, 3.5 μm, 4 μm, 4.5 μm or 5 μm, but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0022] In this invention, the filtration accuracy of the filter element determines the particle size of the particulate matter in the detection medium used during detection. Particulate matter-containing gas with a particle size larger than the filtration accuracy is used as the detection medium. For example, when the detection accuracy of the filter element is 1 μm, materials with a particle size of 1 to 1.1 μm can be used.

[0023] As a preferred technical solution of this utility model, the connection accuracy of the flower plate and the filter element is less than 1μm, such as 1μm, 0.9μm, 0.8μm, 0.7μm, 0.6μm, 0.5μm or 0.4μm, etc., but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0024] In this invention, the tube sheet is designed to fix the filter element, and by controlling the connection precision between the tube sheet and the filter element, dust leakage and its impact on the accuracy of the test results are avoided.

[0025] As a preferred technical solution of this utility model, the negative pressure fan and the positive pressure fan independently include a vortex fan.

[0026] In this invention, the negative pressure of the negative pressure fan during operation is -32 to -28 kPa, such as -32 kPa, -31 kPa, -30 kPa, -29 kPa, -28 kPa, etc., and the pressure of the positive pressure fan during operation is 33 to 37 kPa, such as 33 kPa, 34 kPa, 35 kPa, 36 kPa, or 37 kPa, etc.; however, it is not limited to the listed values, and other unlisted values ​​within their respective ranges are also applicable.

[0027] As the preferred technical scheme of the utility model, the dust concentration instrument includes a transmitter, a connecting rod, a sensor and a display unit, one end of the connecting rod is connected with the sensor, the other end is connected with the transmitter, the sensor is connected with the signal input port of the transmitter, and the signal output port of the transmitter is connected with the display unit.

[0028] In the utility model, the dust concentration instrument adopts the alternating coupling technology, the online emission amount or emission concentration of dust particles is confirmed by inducting and detecting the charge inductance generated by dust particles flowing around the probe, so that the real-time online monitoring of the dust concentration is realized, the flow rate of the material is controlled to be 10-20 m / s, for example, 10 m / s, 12 m / s, 14 m / s, 16 m / s, 18 m / s or 20 m / s, but is not limited to the listed values, and other values not listed in the range are also applicable.

[0029] According to the structure of the dust concentration instrument, the sensor is fixed at the front end of the connecting rod through threads or flanges, so that the sensor probe can be inserted into the detected area, such as the center of a pipeline, and the end of the connecting rod is connected with the transmitter shell through a silk port to form an overall structure, the sensor is connected with the signal input port of the transmitter through a shielded cable to transmit electric signals, the transmitter receives the input electric signals, amplifies, filters and digitizes the signals, and then transmits them to the display unit to display the concentration value, and the transmitter is also provided with a power supply interface connected with a power supply through a power line.

[0030] In the utility model, according to the precision of the filter element to be detected, the detection medium is selected, the negative pressure fan is started, the detection medium is pumped to the filter element to realize the separation of the material and gas, at this time, whether the dust concentration instrument behind the negative pressure fan detects the change of the concentration is observed, if the dust concentration instrument detects the change of the concentration, it indicates that the filter element is damaged, if the dust concentration instrument does not detect the change of the concentration, the filter element is normal. Through repeated experiments, it is verified that the performance of the filter element can be effectively detected.

[0031] Compared with the prior art, the utility model has the following beneficial effects:

[0032] (1) the utility model discloses that the filter element to be detected is placed in the filter, and is matched with the flower plate structure, the detection medium after the filter element is filtered is detected by the negative pressure fan and the dust concentration instrument, whether the dust concentration detected during normal use changes, if the concentration changes are detected, it indicates that the filter element is damaged, otherwise, it indicates that the filter element is normal, the automatic detection of the filter element can be realized without manual intervention, the detection efficiency can be effectively improved, and the detection accuracy is high.

[0033] (2) The device has simple structure, convenient operation, low detection cost and can meet the demand of large-scale production. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 is a structural schematic view of the filter element detection device provided by the embodiment 1 of the utility model;

[0035] Among them, 1-filter, 11-flower board, 12-filter element, 13-solenoid valve, 14-material inlet, 15-material outlet, 2-first material buffer tank, 21-rotary valve, 3-second material buffer tank, 4-negative pressure fan, 5-positive pressure fan, 6-dust concentration instrument. DETAILED DESCRIPTION

[0036] In order to better illustrate the utility model, facilitate understanding the technical scheme of the utility model, the utility model is explained in further detail below, but the following embodiment is only a simple example of the utility model, and does not represent or limit the protection scope of the utility model, and the protection scope of the utility model is subject to the claims.

[0037] The following is a typical but non-limiting embodiment of the utility model:

[0038] Embodiment 1:

[0039] The embodiment provides a filter element detection device, and a structural schematic view of the filter element detection device is as shown in Figure 1 Including filter 1, negative pressure fan 4, positive pressure fan 5 and dust concentration instrument 6, the top outlet of filter 1 is connected with the inlet of negative pressure fan 4, the outlet of negative pressure fan 4 is connected with the inlet of dust concentration instrument 6, the outlet of positive pressure fan 5 is connected to the top of filter 1, and filter 1 is used for back blowing;The filter 1 is provided with a flower board 11, the flower board 11 is used for fixedly installing the filter element 12 to be detected, and the structure and specification of the filter element 12 and the flower board 11 are matched.

[0040] The lower part of filter 1 is provided with material inlet 14, and the bottom is provided with material outlet 15, the material inlet 14 is connected with first material buffer tank 2, and the material outlet 15 is connected with second material buffer tank 3.

[0041] Rotary valve 21 is arranged on the conveying pipeline between first material buffer tank 2 and material inlet 14.

[0042] The flower board 11 and the filter element 12 are combined and assembled into the filter 1, and the flower board 11 is located above the filter element 12.

[0043] The flower board 11 is in the form of a flat board, and the flower board 11 is provided with holes for inserting and fixing the filter element 12.

[0044] Five filter cartridges 12 are installed on one flower plate 11, and an electromagnetic valve 13 is arranged above each filter cartridge 12 corresponding to the position of the flower plate 11.

[0045] The flower plate 11 is a metal plate.

[0046] The filter precision of the filter cartridge 12 is 1 μm.

[0047] The negative pressure fan 4 and the positive pressure fan 5 are both vortex fans.

[0048] The dust concentration instrument 6 comprises a transmitter, a connecting rod, a sensor and a display unit, one end of the connecting rod is connected to the sensor, the other end is connected to the transmitter, the sensor is connected to the signal input port of the transmitter, and the signal output port of the transmitter is connected to the display unit.

[0049] Embodiment 2:

[0050] The embodiment provides a filter cartridge detection device, which comprises a filter 1, a negative pressure fan 4, a positive pressure fan 5 and a dust concentration instrument 6, the top outlet of the filter 1 is connected to the inlet of the negative pressure fan 4, the outlet of the negative pressure fan 4 is connected to the inlet of the dust concentration instrument 6, and the outlet of the positive pressure fan 5 is connected to the top of the filter 1 and used for back blowing of the filter 1; the filter 1 is provided with a flower plate 11, the flower plate 11 is used for fixedly installing a filter cartridge 12 to be detected, and the filter cartridge 12 is matched with the structure and specification of the flower plate 11.

[0051] The lower part of the filter 1 is provided with a material inlet 14, and the bottom is provided with a material outlet 15, the material inlet 14 is connected with a first material buffer tank 2, and the material outlet 15 is connected with a second material buffer tank 3.

[0052] A rotary valve 21 is arranged on the conveying pipeline between the first material buffer tank 2 and the material inlet 14.

[0053] The flower plate 11 and the filter cartridge 12 are combined and assembled into the filter 1, and the flower plate 11 is located above the filter cartridge 12.

[0054] The flower plate 11 is a flat plate, and the flower plate 11 is provided with a hole for inserting and fixing the filter cartridge 12.

[0055] Five filter cartridges 12 are installed on one flower plate 11, and an electromagnetic valve 13 is arranged above each filter cartridge 12 corresponding to the position of the flower plate 11.

[0056] The flower plate 11 is a metal plate.

[0057] The filter precision of the filter cartridge 12 is 5 μm.

[0058] The negative pressure fan 4 and the positive pressure fan 5 are both vortex fans.

[0059] The dust concentration instrument 6 comprises a transmitter, a connecting rod, a sensor and a display unit, one end of the connecting rod is connected with the sensor, the other end is connected with the transmitter, the sensor is connected with the signal input port of the transmitter, and the signal output port of the transmitter is connected with the display unit.

[0060] Embodiment 3:

[0061] The embodiment provides a filter element detection device, which comprises a filter 1, a negative pressure fan 4, a positive pressure fan 5 and a dust concentration instrument 6, the top outlet of the filter 1 is connected with the inlet of the negative pressure fan 4, the outlet of the negative pressure fan 4 is connected with the inlet of the dust concentration instrument 6, and the outlet of the positive pressure fan 5 is connected to the top of the filter 1 and used for back blowing of the filter 1; a flower plate 11 is arranged in the filter 1, the flower plate 11 is used for fixedly mounting a filter element 12 to be detected, and the structure and specification of the filter element 12 are matched with those of the flower plate 11.

[0062] A material inlet 14 is arranged in the middle and lower part of the filter 1, a material outlet 15 is arranged at the bottom, the material inlet 14 is connected with a first material buffer tank 2, and the material outlet 15 is connected with a second material buffer tank 3.

[0063] A rotary valve 21 is arranged on a conveying pipeline between the first material buffer tank 2 and the material inlet 14.

[0064] The flower plate 11 and the filter element 12 are combined and assembled into the filter 1, and the flower plate 11 is located above the filter element 12.

[0065] The flower plate 11 is in the form of a plane plate, and a hole is arranged on the flower plate 11 and used for inserting and fixing the filter element 12.

[0066] Three filter elements 12 are correspondingly mounted on one flower plate 11, and an electromagnetic valve 13 is arranged above each filter element 12 corresponding to the position of the flower plate 11.

[0067] The flower plate 11 is a plastic plate.

[0068] The filter precision of the filter element 12 is 2.5 μm.

[0069] The negative pressure fan 4 and the positive pressure fan 5 are both vortex fans.

[0070] The dust concentration instrument 6 comprises a transmitter, a connecting rod, a sensor and a display unit, one end of the connecting rod is connected with the sensor, the other end is connected with the transmitter, the sensor is connected with the signal input port of the transmitter, and the signal output port of the transmitter is connected with the display unit.

[0071] The working process of the filter element detection device in the above embodiment for detecting the performance of the filter element comprises:

[0072] According to the specification of the filter element to be detected, a suitable flower plate is selected, the filter element to be detected is fixedly installed on the flower plate, and is assembled into the filter, according to the precision of the filter element to be detected, a suitable detection medium is selected, then a negative pressure fan is started, a solenoid valve corresponding to a certain filter element and a rotary valve on a material conveying pipeline are opened, the material in the first material buffer tank is extracted by negative pressure, the material is adsorbed on the surface of the filter element, the material is separated from gas through the filter element, the dust concentration instrument monitors the dust concentration in the gas behind the negative pressure fan in real time, whether the dust concentration changes compared with the dust concentration detected when the filter element is normal is judged, if the dust concentration instrument detects that the dust concentration changes, it is judged that the filter element is damaged, if the dust concentration does not change, it is considered that the filter element is normal;

[0073] After the filter element is checked, the rotary valve is closed first, then the negative pressure fan is closed, and then the positive pressure fan is opened, the adsorbed material is blown to the bottom of the filter and enters the second material buffer tank, and then the corresponding solenoid valve is closed; then the negative pressure fan is re-opened, and the above operation is repeated to check another filter element.

[0074] In the utility model, the filter element taking and placing opening can be opened on the side wall of the filter, for example, the side opening door type structure, and the sealing strip is arranged, so that the installation and taking of the filter element are realized; in order to facilitate the taking and placing of the filter element, the size of the filter element taking and placing opening can be set to be larger than the size of a single filter element. It can be understood that other ways can also be used for the taking and placing of the filter element, which will not be repeated.

[0075] It can be seen from the above embodiment that, by placing the filter element to be detected in the filter and matching with the flower plate structure, the dust concentration of the detection medium filtered by the filter element is detected by the negative pressure fan and the dust concentration instrument, whether the dust concentration changes compared with the dust concentration detected when the filter element is normally used is judged, if the concentration change is detected, it indicates that the filter element is damaged, otherwise, it indicates that the filter element is normal, the automatic detection of the filter element can be realized, no manual intervention is needed, the detection efficiency can be effectively improved, the detection accuracy is high; the device structure is simple, the operation is simple, the detection cost is low, and the demand of large-scale production can be met.

[0076] The applicant declares that the utility model is explained by the above embodiment, but the utility model is not limited to the above detailed device, that is, it does not mean that the utility model must rely on the above detailed device to be implemented. Those skilled in the art should understand that any improvement of the utility model, equivalent replacement of the utility model device and addition of auxiliary devices, selection of specific modes and the like fall within the protection scope and disclosure scope of the utility model.

Claims

1. A filter cartridge detection device, characterized by, The filter core detection device comprises a filter, a negative pressure fan, a positive pressure fan and a dust concentration instrument, the top outlet of the filter is connected with the inlet of the negative pressure fan, the outlet of the negative pressure fan is connected with the inlet of the dust concentration instrument, and the outlet of the positive pressure fan is connected to the top of the filter for back blowing of the filter; a flower plate is arranged in the filter, the flower plate is used for fixedly mounting the filter core to be detected, and the structure and specifications of the filter core and the flower plate are matched.

2. The cartridge detection apparatus of claim 1, wherein The middle and lower parts of the filter are provided with a material inlet, and the bottom is provided with a material outlet, the material inlet is connected with a first material buffer tank, and the material outlet is connected with a second material buffer tank.

3. The cartridge detection apparatus of claim 2, wherein A rotary valve is arranged on the conveying pipeline between the first material buffer tank and the material inlet.

4. The cartridge detection apparatus of claim 1, wherein The flower plate and the filter core are assembled into the filter, and the flower plate is located above the filter core.

5. The filter cartridge detection apparatus of claim 1, wherein, The flower plate is in the form of a flat plate, and the flower plate is provided with a hole for inserting and fixing the filter core.

6. The filter cartridge detection apparatus of claim 5, wherein, At least two filter cores are mounted on one flower plate, and an electromagnetic valve is independently arranged above each filter core corresponding to the position of the flower plate.

7. The cartridge detection apparatus of claim 1, wherein The flower plate comprises a metal plate or a plastic plate.

8. The cartridge detection apparatus of claim 1, wherein, The filtering precision of the filter core is 1-5 μm.

9. The cartridge detection apparatus of claim 1, wherein, The negative pressure fan and the positive pressure fan independently comprise a vortex fan.

10. The cartridge detection apparatus of claim 1, wherein, The dust concentration instrument comprises a transmitter, a connecting rod, a sensor and a display unit, one end of the connecting rod is connected with the sensor, the other end is connected with the transmitter, the sensor is connected with the signal input port of the transmitter, and the signal output port of the transmitter is connected with the display unit.

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