Waste gas treatment device for tea oil processing

Abstract

The invention provides a tea oil processing waste gas treatment device which comprises a trapping box, an electrode plate, a waste gas inlet pipe, a waste gas outlet pipe, a gas inlet tee joint, a gas outlet tee joint, a cleaning mechanism and a trapping capacity self-checking mechanism, and the trapping capacity self-checking mechanism comprises a dust containing box, a mounting plate, a weighing sensor, a connecting rod, a fan, a butt joint pipe and a main control unit. Grease particles in tea oil processing waste gas can be captured through an electric field between the electrode plates, the dust-containing box and the capturing box which are arranged up and down can be communicated through the air inlet tee joint and the air outlet tee joint, after the fan is started, dust-containing air in the dust-containing box can be introduced into the capturing box, dust particles are captured through the electrode plates, and the dust particles are collected through the air inlet tee joint and the air outlet tee joint. The weight of the trapped dust can be obtained after the change of weight data before and after the dust containing box is detected through the weighing sensor, so that the trapping capacity of the electrode plate is evaluated, when the trapping capacity is poor, cleaning can be conducted through the cleaning mechanism, and it is guaranteed that tea oil processing waste gas can be effectively treated.

Description

Technical Field

[0001] The invention relates to the technical field of food processing, and in particular to a waste gas treatment device used for tea oil processing. Background Art

[0002] Tea oil is camellia oil, which refers to pure natural high-grade vegetable oil extracted from camellia oil seeds. The processing of camellia oil includes raw material preparation, pressing, refining and packaging. During the pressing and refining of camellia oil, a large amount of waste gas will be generated. These waste gases not only contain oil particles, volatile organic compounds (VOCs) and other harmful substances, but may also have odors. If they are not effectively treated and directly discharged into the atmosphere, they will pose a threat to the environment and the health of operators.

[0003] There are many ways to treat tea oil processing waste gas, and electrostatic oil fume purification is one of them. The tea oil processing waste gas is passed into a high-voltage electrostatic field. Under the action of the electric field, grease particles and smoke can be captured by the electrode plates, significantly reducing the concentration of oil fume. However, in long-term use, a large amount of grease particles and impurities will be deposited on the electrode plates, resulting in a decrease in its capture capacity. When the waste gas used for tea oil processing passes through the electrostatic field, the oil fume concentration cannot be effectively reduced, and the electrode plates need to be cleaned. At present, when electrostatic oil fume is used to purify tea oil processing waste gas, the capture capacity of the electrode plates cannot be self-checked, resulting in the inability to clean the electrode plates in time, causing some of the waste gas that has not been effectively treated to flow into subsequent links or the environment, posing a threat to the environment and staff. Summary of the invention

[0004] In view of this, the present invention proposes a waste gas treatment device for tea oil processing, which can self-check the capture capacity of the electrode plate and can perform cleaning to ensure that the tea oil processing waste gas can be effectively treated when passing through.

[0005] The technical solution of the present invention is achieved in this way:

[0006] A waste gas treatment device for tea oil processing, comprising a capture box, an electrode plate, a waste gas inlet pipe, a waste gas outlet pipe, an air inlet tee, an air outlet tee, a cleaning mechanism and a capture capacity self-checking mechanism, wherein the electrode plates are arranged relatively to the inner side wall of the capture box, the air inlet tee is arranged on the top surface of the capture box, and its outlet is communicated with the inside of the capture box, the waste gas inlet pipe is connected to the first inlet of the air inlet tee, the air outlet tee is arranged on the bottom surface of the capture box, and its inlet is communicated with the inside of the capture box, the waste gas outlet pipe is connected to the first outlet of the air outlet tee, the cleaning mechanism is arranged in the capture box, and is used to clean the side wall opposite to the electrode plate; the capture capacity self-checking mechanism The inspection mechanism includes a dust box, a mounting plate, a weighing sensor, a connecting rod, a fan, a butt joint pipe and a main control unit. The mounting plate is arranged on the top surface of the capture box and below the capture box, the connecting rod connects the top surface of the mounting plate below and the bottom surface of the capture box, the weighing sensor is arranged in the mounting plate, the dust box is arranged on the top surface of the mounting plate, the butt joint pipe connects the upper dust box with the second inlet of the air inlet tee and the lower dust box with the second outlet of the air outlet tee, the fan is arranged in the butt joint pipe, and the main control unit is arranged on the outer side wall of the capture box, and is respectively electrically connected to the air inlet tee, the air outlet tee, the cleaning mechanism, the weighing sensor and the fan.

[0007] Preferably, the docking tube includes a fixed tube, a bellows, a plug-in tube, a first electric push rod and a force block, the fixed tube is arranged on one side of the dust box, the bellows is connected to the plug-in tube and the fixed tube, the plug-in tube is connected to the second inlet of the air inlet tee and the second outlet of the air outlet tee, the force block is arranged on the outer wall of the plug-in tube, the first electric push rod is arranged on the outer wall of the fixed tube, and its output shaft is connected to the side wall of the force block, the fan is arranged in the fixed tube, and the main control unit is electrically connected to the first electric push rod.

[0008] Preferably, the docking tube further includes a control valve, the control valve is disposed on the plug-in tube, and the main control unit is electrically connected to the control valve.

[0009] Preferably, the docking mechanism further comprises a sealing rubber ring, and the sealing rubber ring is arranged on the outer wall of the plug-in tube.

[0010] Preferably, the dust box comprises a frame and a filter cloth, and the filter cloth is arranged on the outer surface of the frame.

[0011] Preferably, the cleaning mechanism includes a hydraulic rod, a lifting plate, a scraper, a nozzle and a storage box, the hydraulic rod is arranged on the top surface of the capture box, and its output shaft is connected to the top surface of the lifting plate, the scraper and the nozzle are arranged on the side wall of the lifting plate, the storage box is arranged on the side wall of the lifting plate away from the nozzle, and the cleaning agent is stored in the storage box, the nozzle is connected to the storage box through a pipe, the electrode plate is located on the moving path of the scraper, and the main control unit is electrically connected to the hydraulic rod and the nozzle, respectively.

[0012] Preferably, the cleaning mechanism further comprises a waste liquid pipe and a valve, wherein the waste liquid pipe is arranged on the bottom surface of the collection box and below the lifting plate, the valve is arranged on the waste liquid pipe, and the main control unit is electrically connected to the valve.

[0013] Preferably, the capture capacity self-inspection mechanism also includes an electric turntable, a rotating rod, a second electric push rod, a grabbing block and a grabbing mechanism. The grabbing block is arranged on the side wall of the dust box away from the docking tube. The electric turntable is arranged on the side wall of the capture box, and its rotating surface is connected to the middle part of the outer wall of the rotating rod. The second electric push rod is arranged at the top and bottom ends of the rotating rod, and its output shaft is connected to the grabbing mechanism. The grabbing mechanism is used to grab the grabbing block, and the main control unit is electrically connected to the electric turntable, the second electric push rod and the grabbing mechanism respectively.

[0014] Preferably, the grabbing mechanism comprises an electromagnet, the output shaft of the second electric push rod is connected to the electromagnet, the grabbing block is made of metal material, and the main control unit is electrically connected to the electromagnet.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The invention discloses an exhaust gas treatment device for tea oil processing, which adopts an electrostatic oil fume purification method to purify the exhaust gas from tea oil processing, wherein after the exhaust gas from tea oil processing enters the capture box, the electric field generated by the electrode plate can capture the oil fume particles, and the oil fume concentration in the treated exhaust gas is reduced, which is convenient for subsequent secondary treatment; in the untreated exhaust gas state, the air inlet tee and the air outlet tee can be adjusted to connect the dust boxes arranged above and below with the capture box, and then the fan is started, and the dust particles contained in the upper dust box can be transported from the air inlet tee to the capture box, and then the electrode plate can capture the dust particles, and then the air will enter the dust box below, and after the fan stops operating, the front and rear weight changes of the upper and lower dust boxes are detected by a weighing sensor, so as to obtain the number of dust particles captured, thereby evaluating the capture capacity of the electrode plate, and when the capture capacity is poor, the cleaning mechanism can be driven to clean the electrode plate to avoid the problem of incomplete treatment of the exhaust gas from tea oil processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic structural diagram of a waste gas treatment device for tea oil processing according to the present invention;

[0019] Figure 2 This is a schematic diagram of the connection structure of a butt joint pipe and a dust box of an exhaust gas treatment device for tea oil processing according to the present invention;

[0020] Figure 3 It is a structural schematic diagram of a cleaning mechanism of a waste gas treatment device for tea oil processing according to the present invention;

[0021] In the figure, 1, capture box; 2, electrode plate; 3, exhaust gas inlet pipe; 4, exhaust gas outlet pipe; 5, air inlet tee, 6, air outlet tee; 7, dust box; 8, mounting plate; 9, weighing sensor; 10, connecting rod; 11, fan; 12, butt joint; 13, main control unit; 14, fixed pipe; 15, bellows; 16, plug-in pipe; 17, first electric push rod; 18, force block; 19, control valve; 20, sealing rubber ring; 21, frame; 22, filter cloth; 23, hydraulic rod; 24, lifting plate; 25, scraper; 26, nozzle; 27, storage box; 28, pipeline; 29, waste liquid pipe; 30, valve; 31, electric turntable; 32, rotating rod; 33, second electric push rod; 34, grab block; 35, electromagnet. DETAILED DESCRIPTION

[0022] In order to better understand the technical content of the present invention, a specific embodiment is provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0023] See also Figures 1 to 3The present invention provides a waste gas treatment device for tea oil processing, comprising a capture box 1, an electrode plate 2, a waste gas inlet pipe 3, a waste gas outlet pipe 4, an air inlet tee 5, an air outlet tee 6, a cleaning mechanism and a capture capacity self-test mechanism, wherein the electrode plate 2 is relatively arranged on the inner side wall of the capture box 1, the air inlet tee 5 is arranged on the top surface of the capture box 1, and its outlet is connected to the inside of the capture box 1, the waste gas inlet pipe 3 is connected to the first inlet of the air inlet tee 5, the air outlet tee 6 is arranged on the bottom surface of the capture box 1, and its inlet is connected to the inside of the capture box 1, the waste gas outlet pipe 4 is connected to the first outlet of the air outlet tee 6, and the cleaning mechanism is arranged in the capture box 1 for cleaning the side wall opposite to the electrode plate 2; the capture capacity self-test mechanism includes a dust-containing The invention relates to a dust collecting box 7, a mounting plate 8, a weighing sensor 9, a connecting rod 10, a fan 11, a butt joint 12 and a main control unit 13. The mounting plate 8 is arranged on the top surface of the collecting box 1 and below the collecting box 1. The connecting rod 10 connects the top surface of the mounting plate 8 below and the bottom surface of the collecting box 1. The weighing sensor 9 is arranged in the mounting plate 8. The dust containing box 7 is arranged on the top surface of the mounting plate 8. The butt joint 12 connects the upper dust containing box 7 with the second inlet of the air inlet tee 5 and the lower dust containing box 7 with the second outlet of the air outlet tee 6. The fan 11 is arranged in the butt joint 12. The main control unit 13 is arranged on the outer wall of the collecting box 1 and is electrically connected to the air inlet tee 5, the air outlet tee 6, the cleaning mechanism, the weighing sensor 9 and the fan 11 respectively.

[0024] An air inlet tee 5 and an air outlet tee 6 are respectively arranged on the top and bottom surfaces of the capture box 1, for adjusting the source of the gas entering the capture box 1. When the air inlet tee 5 is connected to the capture box 1 and the exhaust gas inlet pipe 3 and the air outlet tee 6 is connected to the capture box 1 and the exhaust gas outlet pipe 4, the tea oil processing waste gas can be transported to the capture box 1 through the exhaust gas inlet pipe 3. When the waste gas passes through the electrode plate 2, the oil particles contained in the waste gas will be captured by the electrode plate 2. Finally, the waste gas discharged from the air outlet tee 6 and the exhaust gas outlet pipe 4 has a low concentration of oil fume, which is convenient for secondary treatment.

[0025] When the collection box 1 does not process the tea oil processing waste gas, after controlling the air inlet tee 5 and the air outlet tee 6, the dust boxes 7 arranged above and below can be connected to the collection box 1. At this time, the collection capacity of the electrode plate 2 can be self-checked, wherein the dust particles are accumulated in the upper dust box 7, and the lower dust box 7 is empty before the detection. The weighing sensor 9 in the mounting plate 8 can detect the initial weight of the dust box 7, and then the fan 11 in the connecting pipe 12 is turned on. The upper fan 11 can transport the dust particles in the dust box 7 together with the air to the collection box 1. When the dust-containing air passes between the electrode plates 2, the electrode plates 2 will capture the dust particles, making the air The dust concentration in the air is reduced. After the dust-containing air passes between the electrode plates 2, it will be driven by the fan 11 below and enter the dust box 7 below. The main control unit 13 can control the start and stop of the fan 11 to achieve self-test time control. After driving the fan 11 to stop operating, the weight change of the front and rear dust boxes 7 arranged above and below is collected by the weighing sensor 9. The weight of the dust reduced in the upper dust box 7 and the weight of the captured dust can be obtained, so that the capture capacity of the electrode plate 2 can be calculated. When the capture capacity is poor, the main control unit 13 can control the cleaning mechanism to clean the electrode plate 2 to avoid the inability to effectively treat the tea oil processing waste gas when it passes between the electrode plates 2.

[0026] Preferably, the docking tube 12 includes a fixed tube 14, a bellows 15, a plug-in tube 16, a first electric push rod 17 and a force block 18. The fixed tube 14 is arranged on one side of the dust box 7. The bellows 15 is connected to the plug-in tube 16 and the fixed tube 14. The plug-in tube 16 connects the second inlet of the air inlet tee 5 and the second outlet of the air outlet tee 6. The force block 18 is arranged on the outer wall of the plug-in tube 16. The first electric push rod 17 is arranged on the outer wall of the fixed tube 14, and its output shaft is connected to the side wall of the force block 18. The fan 11 is arranged in the fixed tube 14, and the main control unit 13 is electrically connected to the first electric push rod 17.

[0027] The butt joint 12 can be connected to the air inlet tee 5 and the air outlet tee 6, wherein the first electric push rod 17 can drive the fixed pipe 14 to move through the force block 18, so that the bellows 15 can be connected or disconnected with the air inlet tee 5 or the air outlet tee 6 after expansion and contraction. When the butt joint 12 is connected to the air inlet tee 5 or the air outlet tee 6, dust-laden air can flow along the fixed pipe 14, the bellows 15 and the plug-in pipe 16.

[0028] After the self-check is completed, the first electric push rod 17 can pull the plug-in tube 16 away from the air inlet tee 5 and the air outlet tee 6 through the force block 18. At this time, the dust box 7 is not connected to the air inlet tee 5 or the air outlet tee 6, and the weight data collected by the weighing sensor 9 is relatively accurate, avoiding inaccurate weight data collection caused by the connection of the plug-in tube 12 to the air inlet tee 5 or the air outlet tee 6.

[0029] Preferably, the butt joint 12 further includes a control valve 19 , which is disposed on the plug-in tube 16 , and the main control unit 13 is electrically connected to the control valve 19 .

[0030] The control valve 19 is used to control the opening and closing of the plug-in tube 16 so as to control the flow of dust-laden air.

[0031] Preferably, the docking mechanism further includes a sealing rubber ring 20 , and the sealing rubber ring 20 is arranged on the outer wall of the plug-in tube 16 .

[0032] When the plug-in tube 16 is connected to the air inlet tee 5 or the air outlet tee 6 , the sealing rubber ring 20 can seal the connection to prevent air from leaking out.

[0033] Preferably, the dust box 7 includes a frame 21 and a filter cloth 22 , and the filter cloth 22 is arranged on the outer surface of the frame 21 .

[0034] The dust box 7 is a frame structure, and the outside of its frame 21 is covered with a filter cloth 22. The filter cloth 22 allows air to flow through, but can block dust, so that when the fan 11 is in operation, an airflow can be formed and the dust particles can flow together.

[0035] Preferably, the cleaning mechanism includes a hydraulic rod 23, a lifting plate 24, a scraper 25, a nozzle 26 and a storage box 27. The hydraulic rod 23 is arranged on the top surface of the capture box 1, and its output shaft is connected to the top surface of the lifting plate 24. The scraper 25 and the nozzle 26 are arranged on the side wall of the lifting plate 24. The storage box 27 is arranged on the side wall of the lifting plate 24 away from the nozzle 26, and the cleaning agent is stored therein. The nozzle 26 is connected to the storage box 27 through a pipe 28. The electrode plate 2 is located on the moving path of the scraper 25, and the main control unit 13 is electrically connected to the hydraulic rod 23 and the nozzle 26 respectively.

[0036] When the capture ability of the electrode plate 2 is poor, the hydraulic rod 23 can be opened, and the hydraulic rod 23 drives the lifting plate 24 to descend. During the descent, the nozzle 26 can spray the cleaning agent in the storage box 27 onto the electrode plate 2 through the pipe 28. During the descent of the lifting plate 24, the scraper 25 arranged thereon can scrape and clean the electrode plate 2, so that the stains such as grease particles captured on the electrode plate 2 can be scraped off, thereby restoring the capture ability of the electrode plate 2.

[0037] Preferably, the cleaning mechanism further includes a waste liquid pipe 29 and a valve 30 . The waste liquid pipe 29 is arranged on the bottom surface of the collection box 1 and below the lifting plate 24 . The valve 30 is arranged on the waste liquid pipe 29 . The main control unit 13 is electrically connected to the valve 30 .

[0038] After the valve 30 is opened, the waste liquid generated during the cleaning process can be discharged from the waste liquid pipe 29 to avoid accumulation in the capture box 1 and causing pollution.

[0039] Preferably, the capture capacity self-inspection mechanism also includes an electric turntable 31, a rotating rod 32, a second electric push rod 33, a grabbing block 34 and a grabbing mechanism. The grabbing block 34 is arranged on the side wall of the dust box 7 away from the docking tube 12. The electric turntable 31 is arranged on the side wall of the capture box 1, and its rotating surface is connected to the middle part of the outer wall of the rotating rod 32. The second electric push rod 33 is arranged at the top and bottom ends of the rotating rod 32, and its output shaft is connected to the grabbing mechanism. The grabbing mechanism is used to grab the grabbing block 34, and the main control unit 13 is electrically connected to the electric turntable 31, the second electric push rod 33 and the grabbing mechanism respectively.

[0040] After multiple self-inspections, a lot of dust will accumulate in the lower dust box 7. In order to facilitate multiple self-inspections, the present invention provides a position exchange mechanism for the dust box 7, wherein the second electric push rod 33 can drive the grabbing mechanism to move to the side of the grabbing block 34 and grab the grabbing block 34, and then the second electric push rod 33 drives the dust box 7 to leave the mounting plate 8 and move to the side of the capture box 1, and finally the electric turntable 31 is started. The electric turntable 31 can drive the rotating rod 32 to rotate 180 degrees. After exchanging the positions of the two dust boxes 7, the dust box 7 can be moved to the mounting plate 8 and placed. When the dust weight in the upper dust box 7 is too little, the position can be exchanged to ensure that the self-inspection process is performed multiple times.

[0041] Preferably, the grabbing mechanism includes an electromagnet 35 , the output shaft of the second electric push rod 33 is connected to the electromagnet 35 , the grabbing block 34 is made of metal material, and the main control unit 13 is electrically connected to the electromagnet 35 .

[0042] When the grab block 34 is grabbed, a magnetic attraction method is adopted, wherein the electromagnet 35 can magnetically attract the grab block 34, and the current flowing to the electromagnet 35 is controlled to achieve tightening, and then the dust box 7 can be driven to rotate to change the position.

[0043] 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 waste gas treatment device for tea oil processing, characterized in that: It includes a capture box, an electrode plate, an exhaust gas inlet pipe, an exhaust gas outlet pipe, an air inlet tee, an air outlet tee, a cleaning mechanism and a capture capacity self-test mechanism, wherein the electrode plates are relatively arranged on the inner side wall of the capture box, the air inlet tee is arranged on the top surface of the capture box, and its outlet is connected to the inside of the capture box, the exhaust gas inlet pipe is connected to the first inlet of the air inlet tee, the air outlet tee is arranged on the bottom surface of the capture box, and its inlet is connected to the inside of the capture box, the exhaust gas outlet pipe is connected to the first outlet of the air outlet tee, and the cleaning mechanism is arranged in the capture box for cleaning the side wall opposite to the electrode plate; the capture capacity self-test mechanism includes a dust box , a mounting plate, a weighing sensor, a connecting rod, a fan, a butt joint pipe and a main control unit, the mounting plate is arranged on the top surface of the capture box and below the capture box, the connecting rod connects the top surface of the lower mounting plate and the bottom surface of the capture box, the weighing sensor is arranged in the mounting plate, the dust box is arranged on the top surface of the mounting plate, the butt joint pipe connects the upper dust box with the second inlet of the air inlet tee and the lower dust box with the second outlet of the air outlet tee, the fan is arranged in the butt joint pipe, the main control unit is arranged on the outer side wall of the capture box, and is respectively electrically connected to the air inlet tee, the air outlet tee, the cleaning mechanism, the weighing sensor and the fan.

2. The exhaust gas treatment device for tea oil processing according to claim 1, characterized in that: The butt joint tube includes a fixed tube, a bellows, a plug-in tube, a first electric push rod and a force block, the fixed tube is arranged on one side of the dust box, the bellows is connected to the plug-in tube and the fixed tube, the plug-in tube is connected to the second inlet of the air inlet tee and the second outlet of the air outlet tee, the force block is arranged on the outer wall of the plug-in tube, the first electric push rod is arranged on the outer wall of the fixed tube, and its output shaft is connected to the side wall of the force block, the fan is arranged in the fixed tube, and the main control unit is electrically connected to the first electric push rod.

3. The exhaust gas treatment device for tea oil processing according to claim 2, characterized in that: The butt joint tube further comprises a control valve, the control valve is arranged on the plug-in tube, and the main control unit is electrically connected to the control valve.

4. The exhaust gas treatment device for tea oil processing according to claim 2, characterized in that: The docking mechanism also includes a sealing rubber ring, which is arranged on the outer wall of the plug-in tube.

5. The exhaust gas treatment device for tea oil processing according to claim 1, characterized in that: The dust box comprises a frame body and a filter cloth, and the filter cloth is arranged on the outer surface of the frame body.

6. The exhaust gas treatment device for tea oil processing according to claim 1, characterized in that: The cleaning mechanism includes a hydraulic rod, a lifting plate, a scraper, a nozzle and a storage box. The hydraulic rod is arranged on the top surface of the capture box, and its output shaft is connected to the top surface of the lifting plate. The scraper and the nozzle are arranged on the side wall of the lifting plate. The storage box is arranged on the side wall of the lifting plate away from the nozzle, and the storage box stores cleaning agent. The nozzle is connected to the storage box through a pipeline. The electrode plate is located on the moving path of the scraper. The main control unit is electrically connected to the hydraulic rod and the nozzle respectively.

7. The exhaust gas treatment device for tea oil processing according to claim 6, characterized in that: The cleaning mechanism also includes a waste liquid pipe and a valve. The waste liquid pipe is arranged on the bottom surface of the collection box and is located below the lifting plate. The valve is arranged on the waste liquid pipe. The main control unit is electrically connected to the valve.

8. The exhaust gas treatment device for tea oil processing according to claim 1, characterized in that: The capture capacity self-test mechanism also includes an electric turntable, a rotating rod, a second electric push rod, a grabbing block and a grabbing mechanism. The grabbing block is arranged on the side wall of the dust box away from the docking tube. The electric turntable is arranged on the side wall of the capture box, and its rotating surface is connected to the middle part of the outer wall of the rotating rod. The second electric push rod is arranged at the top and bottom ends of the rotating rod, and its output shaft is connected to the grabbing mechanism. The grabbing mechanism is used to grab the grabbing block, and the main control unit is electrically connected to the electric turntable, the second electric push rod and the grabbing mechanism respectively.

9. The exhaust gas treatment device for tea oil processing according to claim 8, characterized in that: The grabbing mechanism comprises an electromagnet, the output shaft of the second electric push rod is connected to the electromagnet, the grabbing block is made of metal material, and the main control unit is electrically connected to the electromagnet.

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