Negative oxygen ion detection device

Abstract

The invention belongs to the technical field of air quality detection, and particularly relates to a negative oxygen ion detection device which comprises a base and a controller installed on the end face of the base, a detection box is arranged on one side of the upper portion of the base, a negative oxygen ion detection assembly is arranged in the detection box, and the negative oxygen ion detection device further comprises an air inlet box arranged on the upper portion of the base, the air inlet box is arranged in the detection box and located on one side of the detection box, the air inlet box is provided with an air inlet assembly, and the top of the air inlet box is provided with a quality detection unit for detecting air quality. According to the invention, the concentration of negative oxygen ions in the air can be detected, the negative oxygen ion concentration detection work can be automatically started based on the air quality variation, the detection timeliness is ensured, unnecessary detection is reduced, the burden of the filtering mechanism and the detection assembly is reduced, and long-term stable detection of the negative oxygen ion concentration is facilitated.

Description

Technical Field

[0001] The invention belongs to the technical field of air quality detection, and in particular relates to a negative oxygen ion detection device. Background Art

[0002] Negative oxygen ions are oxygen ions with excess electrons and negative charges in the air. They are mainly formed by the oxygen molecules in the air gaining electrons through the effects of ultraviolet rays, lightning, etc. An appropriate amount of negative oxygen ions can improve cardiopulmonary function, promote blood circulation, and regulate the nervous system. Negative oxygen ions can also absorb dust, settle particulate matter, and react with some harmful gases to purify the air.

[0003] At present, negative oxygen ion air purifier is one of the main means to improve indoor air quality. It generates negative oxygen ions to reduce dust and remove odor in indoor air. In order to ensure that the concentration of indoor negative oxygen ions can meet the use and avoid excessive concentration of negative oxygen ions, it is necessary to detect the concentration of indoor negative oxygen ions, such as a negative oxygen ion detection device disclosed in patent announcement number CN218382676U; Capacitive air ion collector is one of the commonly used detection instruments for detecting negative oxygen ion concentration indoors. It forms an electric field by applying voltage to the polarization plate, causing negative oxygen ions to move in a directional manner. The collection plate collects these ions and determines the ion concentration by measuring the charge on the collection plate. However, dust particles themselves are charged, which will interfere with the electric field and may also adsorb negative oxygen ions. Water molecules may combine with negative oxygen ions to form hydrated ions, changing the properties of the ions and affecting the collection efficiency. In addition, the dampness of the electrodes will change the electrical properties, causing charge leakage, which will make the detection results low. In order to avoid the influence of dust and moisture, the negative oxygen ion detection device is generally equipped with a structure specifically used to remove interference items such as dust and moisture. However, negative oxygen ion detection instruments usually operate in a manual start-up or timed detection mode. When the indoor environment is relatively stable and there is no significant change, the concentration of negative oxygen ions often does not fluctuate significantly. At this time, it is not only difficult to obtain valuable concentration change information, making the detection meaningless, but also additionally increase the workload of the dust and moisture filtering mechanism, as well as increase the operating burden of the detection instrument itself, which is not conducive to the long-term stable operation and efficient use of the instrument. Summary of the invention

[0004] The object of the present invention is to provide a negative oxygen ion detection device in view of the above problems.

[0005] To achieve the above object, the present invention adopts the following technical scheme: a negative oxygen ion detection device, comprising a base and a controller installed on the end surface of the base, a detection box is provided on one side above the base, and a negative oxygen ion detection component is provided inside the detection box, and further comprising: An air intake box is arranged above the base and located on one side of the detection box, the air intake box is equipped with an air intake assembly, and a quality detection unit for detecting air quality is installed on the top of the air intake box; A connecting square tube is installed between the air inlet box and the detection box, a filtering mechanism is provided inside the connecting square tube, and a ventilation component is installed on the side wall of the connecting square tube and the detection box; A counting unit is installed on the outer wall of the connecting square tube. The controller controls the operation of the counting unit according to the electrical signal output by the mass detection unit. At least two reference pulse counters and two comparison pulse counters are installed on the inner wall of the air inlet box. The counting unit is electrically connected to the reference pulse counter and the comparison pulse counter through the controller. The controller controls the operation of the negative oxygen ion detection component according to the counting difference between the reference pulse counter and the corresponding comparison pulse counter.

[0006] Preferably, the air intake assembly includes an air intake pipe integrally formed on the side wall of the air intake box away from the detection box, a fan is installed inside the air intake pipe, two exhaust holes are provided at the bottom of the air intake box, an exhaust hood connected to the two exhaust holes is fixedly installed at the bottom of the air intake box, and an air outlet electric control valve is installed at the air outlet end of the exhaust hood, and the fan and the air outlet electric control valve are electrically connected to the controller.

[0007] Preferably, the quality detection unit includes a mounting plate detachably mounted on the top of the air intake box, a detection base is mounted on the top of the mounting plate, at least a dust detection probe and a humidity detection probe are mounted on the bottom of the detection base, and both the dust detection probe and the humidity detection probe are electrically connected to the controller.

[0008] Preferably, the filtering mechanism includes a dust filter fixedly mounted inside the connecting square tube near the air inlet end, a mounting plate is provided inside the connecting square tube between the dust filter and the detection box, a stainless steel mesh sleeve is installed on the side wall of the mounting plate, and the interior of the stainless steel mesh sleeve is filled with silica gel desiccant, and a regeneration component is provided inside the connecting square tube.

[0009] Preferably, the ventilation assembly includes an air inlet hole formed on the side wall of the air inlet box away from the air inlet pipe, an air inlet electric-controlled valve is installed inside the air inlet hole, an averaging plate is installed inside the connecting square tube at a position away from the air inlet hole, and a plurality of flow averaging holes are formed on the side wall of the averaging plate, an air outlet hole is formed on the side wall of the detection box, and an air outlet electric-controlled valve is installed inside the air outlet hole, and the air inlet electric-controlled valve and the air outlet electric-controlled valve are both electrically connected to the controller.

[0010] Preferably, the counting unit includes a mounting cover fixedly mounted on the back of the connecting square tube, a driving motor is fixedly mounted inside the mounting cover, a turntable is fixedly sleeved on the output shaft of the driving motor, and a light-transmitting hole is opened at an eccentric position of the side wall of the turntable, a U-shaped block is fixedly mounted on the inner wall of the mounting cover, a spotlight and a photoelectric switch are fixedly mounted on the side wall of the U-shaped block, and the spotlight and the photoelectric switch are respectively arranged on both sides of the turntable, the light emitted by the spotlight can pass through the light-transmitting hole to illuminate the photosensitive surface of the photoelectric switch, the controller controls the operation of the driving motor according to the electrical signals output by the dust detection probe and the humidity detection probe, the spotlight and the photoelectric switch are electrically connected to the controller, and the photoelectric switch is electrically connected to the reference pulse counter and the comparison pulse counter through the controller.

[0011] Preferably, a fixing plate is installed inside the connecting square tube, and the side wall of the fixing plate is rotatably connected to a strip brush, and the side wall of the strip brush contacts the side wall of the dust filter, the side wall of the connecting square tube is rotatably connected to a transmission rod, and the same electromagnetic clutch is installed between the transmission rod and the output shaft of the driving motor, the transmission rod and the shaft of the strip brush are commonly connected through a bevel gear transmission assembly, the side wall of the connecting square tube is rotatably connected to a mounting rod, and the mounting rod is detachably connected to the side wall of the mounting plate, and the mounting rod and the transmission rod are commonly connected through a belt transmission assembly.

[0012] Preferably, the regeneration component includes a fixed plate which is detachably mounted inside the stainless steel mesh sleeve, a plurality of electric heating rods which are evenly distributed in a ring shape about the axis of the stainless steel mesh sleeve are fixedly mounted on the side wall of the fixed plate, and a heat-conducting hollow sleeve is fixedly mounted on the outer wall of each electric heating rod, the silica gel desiccant is in contact with each heat-conducting hollow sleeve, an evaporation hole is provided inside the connecting square tube, and an evaporation electric control valve is installed inside the evaporation hole, a sealing plate is provided on the side wall of the equalizing plate, a plurality of ventilation holes corresponding to the flow-equalizing holes are provided on the side wall of the sealing plate, an electromagnetic push rod is fixedly inserted on the side wall of the connecting square tube, and the telescopic end of the electromagnetic push rod is fixedly connected to the side wall of the sealing plate, an early warning pulse counter is fixedly mounted inside the mounting cover, the electric heating rods, the evaporation electric control valve and the electromagnetic push rod are all electrically connected to the controller, and the photoelectric switch is electrically connected to the early warning pulse counter through the controller.

[0013] Compared with the existing technology, the advantages of a negative oxygen ion detection device are: 1. Through the cooperation of the provided base, controller, detection box, negative oxygen ion detection component, air intake box, connecting square tube, ventilation component, air intake component and filtering mechanism, the concentration of negative oxygen ions in the air can be detected, and through the cooperation of the provided quality detection unit, counting unit, reference pulse counter and comparison pulse counter, the air quality is detected, and based on the change in the current air quality, the indoor negative oxygen ion concentration detection work is automatically started, so that the negative oxygen ion concentration can be detected in time when the air quality fluctuates greatly. While ensuring the timely detection of the negative oxygen ion concentration, unnecessary detection work can be reduced, and the workload of the filtering mechanism and the negative oxygen ion concentration detection component can be reduced.

[0014] 2. Through the coordination of the fixed plate, strip brush, transmission rod, electromagnetic clutch, bevel gear transmission assembly, mounting rod and belt transmission assembly, dust blockage affecting the ventilation speed can be avoided during the detection of negative oxygen ion concentration, and moisture can be fully adsorbed and dried.

[0015] 3. Through the regeneration component, the regeneration of the silica gel desiccant can be automatically started based on the air humidity when the negative oxygen ion concentration is detected, ensuring the continuous drying and dehumidification of the silica gel desiccant and minimizing the impact of moisture on the negative oxygen ion detection component. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a negative oxygen ion detection device provided by the present invention; Figure 2 It is a schematic diagram of the internal structure of a detection box, an air intake box and a connecting square tube of a negative oxygen ion detection device provided by the present invention; Figure 3 It is a schematic diagram of the top view structure of a connected square tube of a negative oxygen ion detection device provided by the present invention; Figure 4 The present invention provides a negative oxygen ion detection device Figure 3 A magnified view of the structure of part A; Figure 5 It is a schematic diagram of the connection structure of a sealing plate and an averaging plate of a negative oxygen ion detection device provided by the present invention.

[0017] In the figure: 1 base, 2 controller, 3 detection box, 4 negative oxygen ion detection component, 5 air intake box, 6 air intake component, 61 air intake pipe, 62 fan, 63 exhaust hole, 64 exhaust cover, 65 air outlet electric control valve, 7 quality inspection unit, 71 mounting plate, 72 detection base, 73 dust detection probe, 74 humidity detection probe, 8 connecting square tube, 9 filtering mechanism, 91 dust filter, 92 mounting plate, 93 stainless steel mesh sleeve, 94 silica gel desiccant, 10 ventilation component, 101 air intake hole, 102 air intake electric control valve, 103 equalizing plate, 104 equalizing hole, 105 air outlet hole, 106 air outlet electric control valve, 11 Counting unit, 111 mounting cover, 112 driving motor, 113 turntable, 114 light transmission hole, 115 U-shaped block, 116 spotlight, 117 photoelectric switch, 12 reference pulse counter, 13 comparison pulse counter, 14 fixing plate, 15 strip brush, 16 transmission rod, 17 electromagnetic clutch, 18 bevel gear transmission assembly, 19 mounting rod, 20 belt transmission assembly, 21 regeneration assembly, 211 fixing plate, 212 electric heating rod, 213 heat-conducting hollow sleeve, 214 evaporation hole, 215 evaporation electric control valve, 216 sealing plate, 217 ventilation hole, 218 electromagnetic push rod, 219 early warning pulse counter. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0019] like Figure 1-Figure 5 As shown, a negative oxygen ion detection device includes a base 1 and a controller 2 installed on the end face of the base 1, a detection box 3 is provided on the upper side of the base 1, and a negative oxygen ion detection component 4 is provided inside the detection box 3, and also includes: an air inlet box 5, the air inlet box 5 is arranged above the base 1 and on one side of the detection box 3, the air inlet box 5 is installed with an air inlet component 6, the air inlet component 6 includes an air inlet pipe 61 integrally formed and arranged on the side wall of the air inlet box 5 away from the detection box 3, a fan 62 is installed inside the air inlet pipe 61, two exhaust holes 63 are provided at the bottom of the air inlet box 5, an exhaust hood 64 connected to the two exhaust holes 63 is fixedly installed at the bottom of the air inlet box 5, and an exhaust electric control valve 65 is installed at the exhaust end of the exhaust hood 64, the fan 62 and the exhaust electric control valve 65 are electrically connected to the controller 2, and a safety baffle is installed at the air inlet pipe 61 to prevent external foreign matter from entering the air inlet box 5.

[0020] A quality detection unit 7 for detecting air quality is installed on the top of the air intake box 5. The quality detection unit 7 includes a mounting plate 71 detachably mounted on the top of the air intake box 5. A detection base 72 is mounted on the top of the mounting plate 71. At least a dust detection probe 73 and a humidity detection probe 74 are installed on the bottom of the detection base 72. The dust detection probe 73 and the humidity detection probe 74 are both electrically connected to the controller 2. The dust detection probe 73 and the humidity detection probe 74 respectively convert the dust concentration and humidity into electrical signals and output them to the controller 2.

[0021] The connecting square tube 8 is installed between the air intake box 5 and the detection box 3. A filtering mechanism 9 is provided inside the connecting square tube 8. The filtering mechanism 9 includes a dust filter 91 fixedly installed inside the connecting square tube 8 near the air intake end. A mounting plate 92 is provided inside the connecting square tube 8 between the dust filter 91 and the detection box 3. A stainless steel mesh sleeve 93 is installed on the side wall of the mounting plate 92, and the interior of the stainless steel mesh sleeve 93 is filled with silica gel desiccant 94. A regeneration component 21 is provided inside the connecting square tube 8, wherein a side plate is installed on the end face of the base 1 for fixing the connecting square tube 8.

[0022] A ventilation component 10 is commonly installed on the side walls of the connecting square tube 8 and the detection box 3, and the ventilation component 10 includes an air inlet hole 101 opened on the side wall of the air inlet box 5 away from the air inlet pipe 61, and an air inlet electric-controlled valve 102 is installed inside the air inlet hole 101, and an equalizing plate 103 is installed at a position on the side of the connecting square tube 8 away from the air inlet hole 101, and a plurality of equal flow holes 104 are opened on the side wall of the equalizing plate 103, an air outlet hole 105 is opened on the side wall of the detection box 3, and an air outlet electric-controlled valve 106 is installed inside the air outlet hole 105, and the air inlet electric-controlled valve 102 and the air outlet electric-controlled valve 106 are both electrically connected to the controller 2.

[0023] The counting unit 11 is installed on the outer wall of the connecting square tube 8. The controller 2 controls the counting unit 11 to work according to the electrical signal output by the quality detection unit 7. At least two reference pulse counters 12 and two comparison pulse counters 13 are installed on the inner wall of the air inlet box 5. The counting unit 11 is electrically connected to the reference pulse counter 12 and the comparison pulse counter 13 through the controller 2. The controller 2 controls the negative oxygen ion detection component 4 to work according to the counting difference between the reference pulse counter 12 and the corresponding comparison pulse counter 13. The counting unit 11 includes a mounting cover 111 fixedly installed on the back of the connecting square tube 8. A driving motor 112 is fixedly installed inside the mounting cover 111. A turntable 113 is fixedly sleeved on the output shaft of the driving motor 112, and a light-transmitting hole 114 is opened at the eccentric position of the side wall of the turntable 113. The mounting cover 11 1 is fixedly installed with a U-shaped block 115, and the side wall of the U-shaped block 115 is fixedly installed with a spotlight 116 and a photoelectric switch 117, and the spotlight 116 and the photoelectric switch 117 are respectively arranged on both sides of the turntable 113, and the light emitted by the spotlight 116 can be irradiated to the photosensitive surface of the photoelectric switch 117 through the light-transmitting hole 114. The controller 2 controls the driving motor 112 to work according to the electrical signals output by the dust detection probe 73 and the humidity detection probe 74, respectively. The spotlight 116 and the photoelectric switch 117 are both electrically connected to the controller 2, and the photoelectric switch 117 is electrically connected to the reference pulse counter 12 and the comparison pulse counter 13 through the controller 2. The photoelectric switch 117 can convert the optical signal into an electrical signal, and output it to the reference pulse counter 12 and the comparison pulse counter 13 through the controller 2.

[0024] A fixing plate 14 is installed inside the connecting square tube 8, and the side wall of the fixing plate 14 is rotatably connected to a strip brush 15, and the side wall of the strip brush 15 contacts the side wall of the dust filter 91, and the side wall of the connecting square tube 8 is rotatably connected to a transmission rod 16, and the same electromagnetic clutch 17 is installed between the transmission rod 16 and the output shaft of the driving motor 112, and the transmission rod 16 and the shaft rod of the strip brush 15 are jointly connected through a bevel gear transmission assembly 18. The side wall of the connecting square tube 8 is rotatably connected to a mounting rod 19, and the mounting rod 19 is detachably connected to the side wall of the mounting plate 92, and the mounting rod 19 and the transmission rod 16 are jointly connected through a belt transmission assembly 20. The electromagnetic clutch 17 includes components such as a moving plate, a stationary plate, an armature, and an electromagnetic structure. The electromagnetic structure is energized, and the moving plate and the stationary plate are fixed to each other by adsorbing the armature.

[0025] The regeneration component 21 includes a fixed plate 211 detachably mounted inside the stainless steel mesh sleeve 93, a plurality of electric heating rods 212 are fixedly mounted on the side wall of the fixed plate 211 and are evenly distributed in a ring shape about the axis of the stainless steel mesh sleeve 93, and a heat-conducting hollow sleeve 213 is fixedly sleeved on the outer wall of each electric heating rod 212, a silica gel desiccant 94 is in contact with each heat-conducting hollow sleeve 213, an evaporation hole 214 is opened inside the communicating square tube 8, and an evaporation electric control valve 215 is installed inside the evaporation hole 214, a sealing plate 216 is provided on the side wall of the equalizing plate 103, and a plurality of sealing plates 216 are opened on the side wall of the sealing plate 216 and are connected to the equalizing hole 104. Corresponding to the air vent 217, an electromagnetic push rod 218 is fixedly inserted into the side wall of the connecting square tube 8, and the telescopic end of the electromagnetic push rod 218 is fixedly connected to the side wall of the sealing plate 216, and an early warning pulse counter 219 is fixedly installed inside the mounting cover 111. The heating rod 212, the evaporation electric control valve 215 and the electromagnetic push rod 218 are all electrically connected to the controller 2. The photoelectric switch 117 is electrically connected to the early warning pulse counter 219 through the controller 2. An opening is provided on the side wall of the connecting square tube 8, and a cover plate is provided at the opening for replacing the silica gel desiccant 94 and transferring the dust filtered by the dust filter 91 for processing.

[0026] The operating principle of the present invention is now described as follows: the entire device is placed at a suitable location indoors, and the controller 2 is connected to an external power supply circuit, and then the controller 2 is started; After the controller 2 is started, it will control the fan 62 to work regularly for 5 minutes, and control the air outlet electric control valve 65 to be powered on and open for 5 minutes. The controller 2 will first start the dust detection probe 73, and control the drive motor 112 to work according to the electrical signal output by the dust detection probe 73. The transmitting end of the dust detection probe 73 emits light, and the dust in the air will partially block the light irradiated to its receiving end. The higher the dust concentration, the more light is blocked, so the light intensity irradiated to its receiving end is lower. At this time, the electrical signal intensity output by the dust detection probe 73 to the controller 2 is lower. Therefore, the controller 2 controls the output power of the driving motor 112 to decrease synchronously, so the driving motor 112 drives the rotating disk 113 to rotate slower, and each time the rotating disk 113 rotates one circle, the light-transmitting hole 114 at the eccentric part of the rotating disk 113 will pass between the spotlight 116 and the photoelectric switch 117 once, so each time the rotating disk 113 rotates one circle, the photoelectric switch 117 can receive the light emitted by the spotlight 116 once, and the photoelectric switch 117 can convert the light signal into an electrical signal. In the initial 2 minutes and 30 seconds, the controller 2 will connect the photoelectric switch 117 to the corresponding The connection circuit of the reference pulse counter 12 is connected, so the reference pulse counter 12 will get an electrical signal every time the turntable 113 rotates one circle. At this time, the count of the reference pulse counter 12 will increase by "1". After the fan 62 works for 2 minutes and 30 seconds, the value measured by the reference pulse counter 12 represents the dust concentration in the air at the current time point. After the fan 62 works for 2 minutes and 30 seconds, the controller 2 will start the humidity detection probe 74 and control the drive motor 112 to work according to the electrical signal output by the humidity detection probe 74. At the same time, the controller 2 will turn on the light The connection circuit of the electric switch 117 and the reference pulse counter 12 corresponding to the humidity detection probe 74 is connected, and the humidity detection probe 74 detects the humidity in the air. When the humidity in the air changes, the resistance of its own humidity-sensitive element will also change, so the strength of the electrical signal output to the controller 2 will also change. At this time, the controller 2 controls the output power of the drive motor 112 to change synchronously. During the time period of 2 minutes 31 seconds to 5 minutes when the fan 62 works, the value measured by the reference pulse counter 12 corresponding to the humidity detection probe 74 represents the air humidity at the current time point; After the fan 62 has worked for 5 minutes, the controller 2 controls the fan 62 to stop working, and controls the outlet electric control valve 65 to be powered off and closed, and then the controller 2 starts the air quality comparison work at a certain interval (the interval time can be set by the controller 2 according to actual needs, for example, every 1 hour). When the controller 2 starts the air quality comparison work, the controller 2 will control the fan 62 to work for 5 minutes again, and control the outlet electric control valve 65 to open. The controller 2 will still control the dust detection probe 73 to work within 2 minutes and 30 seconds after the fan 62 starts working, and at the same time, the connection between the photoelectric switch 117 and the comparison pulse counter 13 corresponding to the dust detection probe 73 is returned to The circuit is connected. At this time, the comparison pulse counter 13 corresponding to the dust detection probe 73 will count the electrical signal output by the photoelectric switch 117, and the controller 2 controls the driving motor 112 to work according to the dust detection probe 73. After 2 minutes and 30 seconds, the value measured by the comparison pulse counter 13 corresponding to the dust detection probe 73 represents the dust concentration in the air at the current time point. The controller 2 will calculate the difference between the reference pulse counter 12 corresponding to the dust detection probe 73 and the comparison pulse counter 13. For example, if the count value of the reference pulse counter 12 is m and the count value of the comparison pulse counter 13 is n, the controller 2 will calculate the difference between m and n. When the difference is greater than "20", it means that the current dust concentration in the air has changed significantly compared with the dust concentration at the previous time point. Since the negative oxygen ions in the air have a certain dust reduction ability, when the dust concentration in the air changes greatly, it means that the concentration of negative oxygen ions may be too low. Therefore, when the dust concentration in the air fluctuates greatly, the controller 2 will start a negative oxygen ion detection work. On the contrary, when the difference does not exceed "20", it means that the current dust concentration has not fluctuated significantly compared with the dust concentration at the previous time point. At this time, the concentration of negative oxygen ions is relatively stable, so there is no need to perform negative oxygen ion concentration detection work. When the difference between the reference pulse counter 12 and the comparison pulse counter 13 corresponding to the dust detection probe 73 is within the set range, the controller 2 will control the connection circuit of the photoelectric switch 117 and the comparison pulse counter 13 corresponding to the humidity detection probe 74 to be connected within 2 minutes and 31 seconds to 5 minutes of the fan 62 working, and calculate whether the difference between the reference pulse counter 12 and the comparison pulse counter 13 corresponding to the humidity detection probe 74 is within the set range (the difference is "25") according to the above principle. If the difference exceeds the set range, the controller 2 starts the negative oxygen ion concentration detection work, otherwise, the negative oxygen ion concentration detection work is not started; Among them, when the difference between the reference pulse counter 12 and the comparison pulse counter 13 corresponding to the dust detection probe 73 is within the set range, and the difference between the reference pulse counter 12 and the comparison pulse counter 13 corresponding to the humidity detection probe 74 is also within the set range, it indicates that the detection of negative oxygen ion concentration is not required at the current time point, and the controller 2 controls the fan 62 to stop working, and repeats the above steps again at a certain interval until the difference between the reference pulse counter 12 and the corresponding comparison pulse counter 13 exceeds the set range, and the controller 2 immediately starts a negative oxygen ion concentration detection work; When the controller 2 starts the negative oxygen ion concentration detection work, the controller 2 will control the fan 62 to work regularly for 3 minutes. At this time, the controller 2 will control the air outlet electric control valve 65 to be powered off and closed, and control the air inlet electric control valve 102 and the air outlet electric control valve 106 to be powered on and opened. At the same time, the controller 2 controls the drive motor 112, the electromagnetic clutch 17 and the negative oxygen ion detection component 4 to work. At this time, the wind flow delivered by the fan 62 enters the connecting square tube 8 at a uniform speed, and first passes through the dust filter 91. The dust filter 91 can intercept the dust in the wind flow, thereby reducing the impact of dust on the negative oxygen ion detection component 4. Then the wind flow will pass through the stainless steel mesh sleeve 93 and the silica gel desiccant 94. The silica gel desiccant 94 can adsorb moisture in the air, thereby reducing the impact of moisture on the negative oxygen ion detection component 4. The filtered wind flow passes through the equal flow hole 104 and enters the detection box 3 at a uniform speed. The polarization plate of the negative oxygen ion detection component 4 is loaded with voltage to form an electric field, so that the negative oxygen ions move in a directional manner, and the collection board collects these ions. , the ion concentration can be determined by measuring the charge on the collection board, the weak charge signal collected by the collection board is amplified, converted and processed, and finally the negative oxygen ion concentration data is output. The controller 2 will send the negative oxygen ion concentration data to the user's terminal (such as a mobile phone), and at the same time remind the personnel to check the updated negative oxygen ion concentration data in time through its own buzzer. Among them, when the drive motor 112 and the electromagnetic clutch 17 are working, the output shaft of the drive motor 112 will drive the transmission rod 16 to rotate through the electromagnetic clutch 17, and the transmission rod 16 will drive the strip brush 15 and the installation rod 19 to rotate synchronously through the bevel gear transmission component 18 and the belt transmission component 20. The strip brush 15 can rotate on the surface of the dust filter 91, thereby preventing dust from clogging the dust filter 91, and the installation rod 19 can drive the installation plate 92 to drive the stainless steel mesh sleeve 93 to rotate, so that the wind flow can be fully contacted with the silica gel desiccant 94 inside the stainless steel mesh sleeve 93, thereby ensuring that the silica gel desiccant 94 fully dries the wind flow; When the fan 62 finishes working for 3 minutes, the controller 2 ends the negative oxygen ion concentration detection work. The controller 2 controls the counts of each reference pulse counter 12 and the comparison pulse counter 13 to zero, and repeats the above steps to make the reference pulse counter 12 count again according to the current dust and humidity, and after a subsequent interval, it is judged again by the difference between the comparison pulse counter 13 and the reference pulse counter 12 whether the air quality fluctuates too much, and after a large fluctuation, the negative oxygen ion concentration detection work is performed again, so that it can reduce unnecessary detection work and reduce the workload of the filter mechanism 9 and the negative oxygen ion detection component 4 while ensuring the timeliness of the negative oxygen ion concentration detection. Among them, in order to improve the comprehensiveness of triggering the negative oxygen ion concentration detection, the detection probe installed at the bottom of the detection base 72 is not limited to the dust detection probe 73 and the humidity detection probe 74, and corresponding air quality detection probes, such as formaldehyde detection probes, sulfur dioxide detection probes, etc., can also be installed according to the use environment, and corresponding reference pulse counters 12 and comparison pulse counters 13 are added. These detection probes convert the detected substance concentration into an electrical signal and output it to the controller 2. The controller 2 controls the operation of the drive motor 112 according to the strength of the electrical signal, and measures it through the reference pulse counter 12, and compares the value measured by the comparison pulse counter 13 with the value measured by the reference pulse counter 12 to determine the difference, and then determines whether the concentration of the corresponding substance in the air fluctuates too much, and starts the negative ion concentration detection work when it fluctuates too much. At the same time, the user can also manually start the negative oxygen ion concentration detection work through the controller 2; Secondly, when the controller 2 starts the detection of negative oxygen ion concentration, the controller 2 will synchronously control the humidity detection probe 74 to work, and control the drive motor 112 to work based on the electrical signal output by the humidity detection probe 74. When the humidity is higher, the resistance of the humidity-sensitive element inside the humidity detection probe 74 is lower, the current intensity passing through the drive motor 112 is greater, and the output power of the drive motor 112 is synchronously increased, so the rotation speed of the turntable 113 is faster. At this time, the controller 2 connects the connection circuit between the photoelectric switch 117 and the early warning pulse counter 219. As the humidity is higher, the more moisture is adsorbed by the silica gel desiccant 94, and at this time, since the output power of the drive motor 112 is increased, the value measured by the early warning pulse counter 219 will increase faster. When the value measured by the early warning pulse counter 219 reaches a preset value (the preset value is set according to the material and quantity of the silica gel desiccant 94 used), the early warning pulse counter 219 will feedback an electrical signal to the controller 2, and the controller 2 will immediately start the regeneration of the silica gel desiccant 94. When the controller 2 starts the regeneration of the silica gel desiccant 94, the controller 2 will start after the detection of the current negative oxygen ion concentration is completed, that is, after the fan 62 has been working for 3 minutes, the controller 2 controls the fan 62 to continue working, and controls each electric heating rod 212 to work. At the same time, the controller 2 controls the electromagnetic push rod 218 to work, and the electromagnetic push rod 218 can push the sealing plate 216 to move, so that the vent hole 217 on the side wall of the sealing plate 216 is misaligned with the flow-equalizing hole 104, so that the sealing plate 216 seals the flow-equalizing hole 104, and then the controller 2 controls the evaporation electric control valve 215 to be energized and opened, and the electric heating rod 212 can regenerate the silica gel. The desiccant 94 is heated (the heating temperature is set based on the selected silica gel desiccant 94, generally 120°C-180°C). As the silica gel desiccant 94 is heated, the silica gel desiccant 94 is activated and regenerated, so that the moisture adsorbed inside its pores is desorbed and discharged through the evaporation hole 214 under the action of the wind flow sent by the fan 62. After a certain period of heating (the heating time is set based on the selected silica gel desiccant 94 and the set heating temperature), the silica gel desiccant 94 can be regenerated. During the regeneration of the silica gel desiccant 94, the controller 2 suspends the detection and comparison of air quality fluctuations.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A negative oxygen ion detection device, comprising a base (1) and a controller (2) mounted on an end surface of the base (1), a detection box (3) being provided on one side above the base (1), and a negative oxygen ion detection component (4) being provided inside the detection box (3), characterized in that: Also includes: An air intake box (5) is arranged above the base (1) and located on one side of the detection box (3); the air intake box (5) is equipped with an air intake assembly (6); and a quality detection unit (7) for detecting air quality is installed on the top of the air intake box (5); A connecting square tube (8) is installed between the air inlet box (5) and the detection box (3); a filtering mechanism (9) is provided inside the connecting square tube (8); and a ventilation component (10) is installed on the side wall of the connecting square tube (8) and the detection box (3); A counting unit (11) is mounted on the outer wall of the connecting square tube (8); the controller (2) controls the counting unit (11) to operate according to an electrical signal output by the quality detection unit (7); at least two reference pulse counters (12) and two comparison pulse counters (13) are mounted on the inner wall of the air inlet box (5); the counting unit (11) is electrically connected to the reference pulse counter (12) and the comparison pulse counter (13) through the controller (2); the controller (2) controls the negative oxygen ion detection component (4) to operate according to a count difference between the reference pulse counter (12) and the corresponding comparison pulse counter (13).

2. A negative oxygen ion detection device according to claim 1, characterized in that: The air intake assembly (6) comprises an air intake pipe (61) integrally formed and arranged on a side wall of the air intake box (5) away from the detection box (3); a fan (62) is installed inside the air intake pipe (61); two exhaust holes (63) are provided at the bottom of the air intake box (5); an exhaust hood (64) connected to the two exhaust holes (63) is fixedly installed at the bottom of the air intake box (5); and an exhaust electric control valve (65) is installed at the exhaust end of the exhaust hood (64); the fan (62) and the exhaust electric control valve (65) are electrically connected to the controller (2).

3. A negative oxygen ion detection device according to claim 2, characterized in that: The quality detection unit (7) comprises a mounting plate (71) detachably mounted on the top of the air inlet box (5); a detection base (72) is mounted on the top of the mounting plate (71); at least a dust detection probe (73) and a humidity detection probe (74) are mounted on the bottom of the detection base (72); the dust detection probe (73) and the humidity detection probe (74) are both electrically connected to the controller (2).

4. A negative oxygen ion detection device according to claim 3, characterized in that: The filtering mechanism (9) comprises a dust filter (91) fixedly mounted inside the connecting square tube (8) on one side close to the air inlet end; a mounting plate (92) is provided inside the connecting square tube (8) at a position between the dust filter (91) and the detection box (3); a stainless steel mesh sleeve (93) is mounted on the side wall of the mounting plate (92); and a silica gel desiccant (94) is filled inside the stainless steel mesh sleeve (93); and a regeneration component (21) is provided inside the connecting square tube (8).

5. A negative oxygen ion detection device according to claim 4, characterized in that: The ventilation assembly (10) comprises an air inlet hole (101) provided on a side wall of an air inlet box (5) away from an air inlet pipe (61); an air inlet electric control valve (102) is installed inside the air inlet hole (101); an equalizing plate (103) is installed inside the connecting square tube (8) at a position away from the air inlet hole (101); a plurality of equalizing holes (104) are provided on the side wall of the equalizing plate (103); an air outlet hole (105) is provided on the side wall of the detection box (3); an air outlet electric control valve (106) is installed inside the air outlet hole (105); and both the air inlet electric control valve (102) and the air outlet electric control valve (106) are electrically connected to the controller (2).

6. A negative oxygen ion detection device according to claim 5, characterized in that: The counting unit (11) comprises a mounting cover (111) fixedly mounted on the back of the connecting square tube (8), a driving motor (112) fixedly mounted inside the mounting cover (111), a rotating disk (113) fixedly sleeved on the output shaft of the driving motor (112), and a light-transmitting hole (114) is provided at an eccentric position of a side wall of the rotating disk (113), a U-shaped block (115) fixedly mounted on the inner wall of the mounting cover (111), a spotlight (116) and a photoelectric switch (117) fixedly mounted on the side wall of the U-shaped block (115), and the spotlight (116) and the photoelectric switch (117) are fixedly mounted on the side wall of the U-shaped block (115), and the spotlight (116) and the photoelectric switch (117) are fixedly mounted on the inner wall of the mounting cover (111). 17) are respectively arranged on both sides of the turntable (113); the light emitted by the spotlight (116) can be transmitted through the light-transmitting hole (114) to illuminate the photosensitive surface of the photoelectric switch (117); the controller (2) controls the operation of the drive motor (112) according to the electrical signals output by the dust detection probe (73) and the humidity detection probe (74); the spotlight (116) and the photoelectric switch (117) are both electrically connected to the controller (2); and the photoelectric switch (117) is electrically connected to the reference pulse counter (12) and the comparison pulse counter (13) through the controller (2).

7. A negative oxygen ion detection device according to claim 6, characterized in that: A fixing plate (14) is installed inside the connecting square tube (8); a strip brush (15) is rotatably connected to the side wall of the fixing plate (14), and the side wall of the strip brush (15) contacts the side wall of the dust filter (91); a transmission rod (16) is rotatably connected to the side wall of the connecting square tube (8), and an electromagnetic clutch (17) is installed between the transmission rod (16) and the output shaft of the driving motor (112); the transmission rod (16) and the shaft of the strip brush (15) are connected in transmission via a bevel gear transmission assembly (18); a mounting rod (19) is rotatably connected to the side wall of the connecting square tube (8), and the mounting rod (19) is detachably connected to the side wall of the mounting plate (92); and the mounting rod (19) and the transmission rod (16) are connected in transmission via a belt transmission assembly (20).

8. A negative oxygen ion detection device according to claim 6, characterized in that: The regeneration component (21) comprises a fixed plate (211) detachably mounted inside the stainless steel mesh sleeve (93); a plurality of electric heating rods (212) are fixedly mounted on the side wall of the fixed plate (211) and are evenly distributed in a ring shape about the axis of the stainless steel mesh sleeve (93); the outer wall of each electric heating rod (212) is fixedly sleeved with a heat-conducting hollow sleeve (213); the silica gel desiccant (94) is in contact with each heat-conducting hollow sleeve (213); an evaporation hole (214) is provided inside the connecting square tube (8); an evaporation electric control valve (215) is installed inside the evaporation hole (214); and a sealing member (215) is provided on the side wall of the averaging plate (103). The sealing plate (216) is provided with a plurality of vent holes (217) corresponding to the flow-balancing holes (104) on the side wall of the sealing plate (216); an electromagnetic push rod (218) is fixedly plugged into the side wall of the connecting square tube (8); and the telescopic end of the electromagnetic push rod (218) is fixedly connected to the side wall of the sealing plate (216); an early warning pulse counter (219) is fixedly installed inside the mounting cover (111); the electric heating rod (212), the evaporation electric control valve (215) and the electromagnetic push rod (218) are all electrically connected to the controller (2); and the photoelectric switch (117) is electrically connected to the early warning pulse counter (219) through the controller (2).

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