Variable-frequency energy-saving box type nitrogen generation device capable of being preheated and started at low temperature

Abstract

The invention relates to the technical field of nitrogen generation devices, and discloses a low-temperature preheating starting variable-frequency energy-saving box type nitrogen generation device which comprises a control device, and a control system is arranged in the control device. The control system controls a second electric control lifting column to input stable working current, the second electric control lifting column inputs stable working current, a rubber plate is driven to make contact with one side of the water absorption sponge, extra extrusion force is applied to the water absorption sponge, and water adsorbed by the water absorption sponge is extruded and discharged. And water discharged by the water absorption sponge is input into a storage groove of a fan blade plate and is conveyed into a storage tank through the interior of an inner hollow annular plate, the interior of an outer hollow annular plate and a first conveying pipe to be stored and managed, the effect of automatically cleaning the water in the water absorption sponge is achieved, and it is ensured that the water absorption sponge can normally conduct dehumidification operation.

Description

Technical Field

[0001] The present invention relates to the technical field of nitrogen generation devices, and more particularly to a box-type nitrogen generation device with variable frequency energy saving that can be preheated and started at low temperature. Background Art

[0002] A box-type nitrogen generation device with variable frequency energy saving that can be preheated and started at low temperature is an efficient, energy-saving and highly adaptable nitrogen production equipment. A common box-type nitrogen generation device with variable frequency energy saving that can be preheated and started at low temperature mainly consists of mechanisms such as a compressor, a condenser, a preheating system, an adsorption tower, and a filtering device. The specific working process of the box-type nitrogen generation device with variable frequency energy saving that can be preheated and started at low temperature is as follows: In a low-temperature environment, the preheating system starts to preheat the device to ensure that the internal temperature reaches an appropriate working temperature; at the same time, the electrical control system starts the compressor to start sucking in air; the compressor compresses the sucked-in air to a certain pressure and then sends it to the condenser for cooling. After the condenser, the air may pass through a filtering mechanism for impurity removal and dehumidification operations. The air that has been cooled and preliminarily filtered enters the adsorption tower, and through the adsorption action of the adsorbent, impurities such as oxygen are separated out to obtain pure nitrogen; During the actual operation process, we found that the output and purity of nitrogen decreased. The main reasons for the above situation are as follows: First, the filter plate in the filtering device became blocked: When the filtering device became blocked, the amount of air flowing into the adsorption tower decreased, resulting in a relatively lower output of nitrogen in the later stage. At the same time, the compressor needed to consume more energy to overcome the resistance, resulting in an increase in production costs. Second, the dehumidification device of the filter became saturated: As a result, the moisture adsorption efficiency of the air decreased, resulting in some moisture still remaining in the dried air, which had a certain impact on the purity of nitrogen. When the above situation occurred, it mainly needed to be solved through manual maintenance and repair, thus wasting a certain amount of manpower; Therefore, we now urgently need a box-type nitrogen generation device with variable frequency energy saving that can be preheated and started at low temperature to solve the above existing technical problems. Summary of the Invention

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a box-type nitrogen generation device with variable frequency energy saving that can be preheated and started at low temperature to solve the problems existing in the above background art.

[0004] The present invention provides the following technical solution: A box-type nitrogen generation device with variable frequency energy saving that can be preheated and started at low temperature, comprising: A nitrogen generation device, the inner wall of which is provided with a nitrogen tank for storing nitrogen; A control device for controlling a nitrogen generation device to perform nitrogen production operations, wherein the control device is installed on the side at the front top of the nitrogen generation device, and a control system is provided inside the control device; A protective box for protecting the components required for air filtration. The protective box is installed in the middle area at the front top of the nitrogen generation device. An electric control retractable door is installed on the inner wall of the front of the protective box to assist in protecting the components required for air filtration. A servo motor is installed on the inner side surface of the protective box near the control device, and a transmission rod is installed at the output end of the servo motor; On the inner side surface of the bottom end of the protective box, a dust removal tank and a storage tank are installed in sequence. A filter pipeline is installed through the back of the protective box, and both ends of the filter pipeline extend into the external space of the protective box; A velocity flowmeter is installed on the inner wall of one end of the filter pipeline far from the servo motor for collecting the air flow velocity inside the filter pipeline and transmitting it to the control system. A humidity sensor is installed on the inner side surface at the middle position of the filter pipeline for monitoring the humidity data in the middle area of the filter pipeline and transmitting it to the control system.

[0005] Furthermore, conveying pipes are installed at both ends of the filter pipeline to facilitate the transmission of air, and flange pipe fittings are installed through the outer walls of the filter pipeline near both ends thereof.

[0006] Furthermore, a transmission plate is fixedly installed on the outer wall of the middle area of the transmission rod. Three fan blades are fixedly installed on the outer side surface of the transmission plate at equal intervals along the circumferential direction thereof. A partition plate is installed on the side surface of the fan blade far from the servo motor. A water absorption sponge is fixedly installed on the inner wall of the fan blade near the partition plate. A second electric control lifting column is installed on the inner wall of the fan blade near the partition plate. The output end of the second electric control lifting column is vertically installed with a rubber plate. The second electric control lifting column inputs a stable working current to drive the rubber plate to contact one side of the water absorption sponge and apply an additional extrusion force to the water absorption sponge to squeeze out the water adsorbed by the water absorption sponge. A storage groove is provided on the inner wall of the fan blade far from the partition plate for storing the water discharged from the water absorption sponge.

[0007] Furthermore, an inner hollow annular plate is fixedly installed on the outer side surface of the fan blade far from the transmission plate, and the inside of the inner hollow annular plate is in a flowing state with the storage groove. An outer hollow annular plate is movably sleeved on the outer side surface of the inner hollow annular plate far from the fan blade. A separate storage space is jointly formed between the inside of the outer hollow annular plate and the inside of the inner hollow annular plate for placing the water flowing into the storage groove. The outer hollow annular plate is fixed to the inner side surface of the filter pipeline. A first transmission pipe is installed through the bottom of the outer hollow annular plate, and one end of the first transmission pipe far from the outer hollow annular plate is installed through the inside of the storage tank.

[0008] Furthermore, an air pump is installed through the bottom in front of the dust removal tank, a second transmission pipe is installed through the top of the dust removal tank, a group of support rods are installed through the top of the second transmission pipe, an air flow channel is opened inside the group of support rods, a group of support rods are installed through the top of the auxiliary hollow ring, and another group of support rods are fixedly installed at the middle position of the top of the auxiliary hollow ring. The inside of the other group of support rods is in a solid state, and one end of the other group of support rods away from the auxiliary hollow ring is vertically fixedly installed on the inner wall of the filter pipe. The inner edge of the auxiliary hollow ring is movably sleeved with an inner hollow column. An auxiliary conveying chamber is opened on the inner wall of one end of the inner hollow column away from the auxiliary hollow ring, and a plurality of groups of auxiliary adsorption holes are sequentially opened on the inner wall of the inner hollow column near the auxiliary hollow ring. The plurality of groups of auxiliary adsorption holes are in a mutually communicating state with the auxiliary conveying chamber of the inner hollow column.

[0009] Furthermore, cleaning plates are sequentially equidistantly installed on the outer side of the inner hollow column away from the auxiliary hollow ring. A circulation chamber is opened on the inner wall of the cleaning plate, a main adsorption hole is opened on the side of the cleaning plate, and a filter plate is attached to the outer side of the cleaning plate away from the auxiliary hollow ring. The filter plate is installed on the inner wall of the filter pipe, and the installation positions of the filter plate and the outer hollow annular plate are opposite to each other.

[0010] Furthermore, one end of the transmission rod away from the servo motor is installed with a first electric control lifting column, the output end of the first electric control lifting column is installed with an electromagnetic block, and a card slot adapted to the shape of the electromagnetic block is opened on the side of the inner hollow column close to the electromagnetic block, and a magnetic suction force can be generated between the card slot and the electromagnetic block.

[0011] Furthermore, the control system includes a threshold unit and a reminder module. When the threshold unit simulates the humidity sensor generating simulated humidity data when the water-absorbing sponge is in a normal working state, and when the threshold unit simulates the velocity flowmeter generating simulated air flow velocity when the filter plate is in a normal working state, the threshold unit integrates the simulated humidity data and the simulated air flow velocity to form a threshold range; The control system compares the real-time air flow velocity with the threshold range. When the real-time flow velocity is less than the threshold range, it is determined that the filter plate is blocked. When the real-time air flow velocity is greater than the threshold range, it is determined that the filter plate is damaged; The control system compares the real-time humidity data with the threshold range. When the real-time humidity data is greater than the threshold range, it can be determined that the water-absorbing sponge is in a state of saturated water adsorption.

[0012] The technical effects and advantages of the present invention: 1. When the control system of the present invention determines that the moisture adsorbed by the partition board is in a saturated critical state, the control system controls the second electric control lifting column to input a stable working current. The second electric control lifting column inputs a stable working current, drives the rubber plate to contact one side of the water-absorbing sponge, and applies an additional extrusion force to the water-absorbing sponge to squeeze out the moisture adsorbed by the water-absorbing sponge. The moisture discharged by the water-absorbing sponge is input into the storage tank of the fan blade plate, and is transported to the storage tank through the inside of the inner hollow ring plate, the inside of the outer hollow ring plate, and the first transmission pipe for storage management, achieving the effect of automatically cleaning the moisture inside the water-absorbing sponge and ensuring that the water-absorbing sponge can normally perform the dehumidification operation.

[0013] 2. When the control system of the present invention determines that the filter plate is blocked, the first electric control lifting column inputs a stable working current to drive the electromagnetic block to move into the card slot. The electromagnetic block inputs a stable working current, and a magnetic suction force can be generated between the electromagnetic block and the card slot to fix the electromagnetic block inside the card slot. The rotational force generated by the servo motor is transmitted through the transmission rod, the first electric control lifting column, the electromagnetic block, and the inner hollow column to drive the cleaning plate to perform synchronous rotation operation. The rotating cleaning plate scrapes the surface of the filter plate. At the same time, the air pump inputs a stable working current to generate a certain adsorption force and transmits it to the surface of the filter plate through the second transmission pipe, a group of support rods, the auxiliary hollow ring, the auxiliary adsorption holes, the auxiliary conveying chamber inside the inner hollow column, the circulation chamber inside the cleaning plate, and the main adsorption holes on the side of the cleaning plate to adsorb the dust generated by the scraping of its surface. The adsorbed dust is stored inside the dust removal tank, achieving the effect of automatically cleaning the blockage on the surface of the filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is Figure 1 a schematic diagram of the overall structure of the shown protective box.

[0016] Figure 3 It is Figure 2 a schematic diagram of the overall structure of the shown electric control retractable door when it is in the open state.

[0017] Figure 4 It is Figure 3 a schematic diagram of the cross-section of the middle area of the shown filter pipeline.

[0018] Figure 5 It is Figure 4 an enlarged schematic diagram of the structure at A in

[0019] Figure 6 It is Figure 4 a schematic diagram of the overall structure of the shown outer hollow ring plate.

[0020] Figure 7 is Figure 6 a schematic cross-sectional view of the side structure of the shown fan blade plate.

[0021] Figure 8 is Figure 4 a schematic view of the overall structure of the shown cleaning plate.

[0022] Figure 9 is Figure 8 a schematic cross-sectional view of the side structure of the shown auxiliary hollow ring.

[0023] The reference numerals are: 1, nitrogen generating device; 101, nitrogen tank; 2, control device; 3, protective box; 301, electrically controlled retractable door; 302, delivery pipe; 303, filter pipe; 304, flange pipe fitting; 4, servo motor; 401, storage tank; 402, transmission rod; 403, first transmission pipe; 404, outer hollow annular plate; 405, first electrically controlled lifting column; 406, electromagnetic block; 407, inner hollow annular plate; 408, transmission plate; 409, fan blade plate; 410, partition; 411, water-absorbing sponge; 412, rubber plate; 413, second electrically controlled lifting column; 5, dust removal tank; 501, air pump; 502, second transmission pipe; 503, support rod; 504, filter plate; 505, cleaning plate; 506, inner hollow column; 507, auxiliary hollow ring; 508, card slot; 509, auxiliary adsorption hole. Detailed implementation manners

[0024] Next, the technical solutions in the present invention will be clearly and completely described in conjunction with the drawings in the present invention. In addition, the forms of the respective structures described in the following embodiments are merely examples, and a box-type nitrogen generating device with low-temperature preheating start-up, frequency conversion and energy saving related to the present invention is not limited to the respective structures described in the following embodiments. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0025] Referring to Figures 1 to 3 as shown, the present invention provides a box-type nitrogen generating device with low-temperature preheating start-up, frequency conversion and energy saving, including a nitrogen generating device 1, and a nitrogen tank 101 is installed on the inner wall of the nitrogen generating device 1 for storing nitrogen; a control device 2 for controlling the nitrogen generating device 1 to perform nitrogen production operations, wherein the control device 2 is installed at the side of the front top of the nitrogen generating device 1, and a control system is provided inside the control device 2; The protective box 3 is used to protect the components required for air filtration. The protective box 3 is installed in the middle area at the front top of the nitrogen generator 1. An electric control retractable door 301 is installed on the inner wall of the front of the protective box 3 to assist in protecting the components required for air filtration. A servo motor 4 is installed on the inner side of the protective box 3 near the control device 2, and a transmission rod 402 is installed at the output end of the servo motor 4; On the inner side of the bottom end of the protective box 3, a dust removal tank 5 and a storage tank 401 are installed in sequence.

[0026] In the embodiment of the present application, the specific working process of this part of the embodiment is as follows: The air adsorbed by the nitrogen generator 1 is cooled by the internal condenser thereof and then input into the internal filtration pipeline 303 for filtration and dehumidification operations. The filtered and dehumidified air is input into the adsorption tower inside the nitrogen generator 1 again. Through the adsorption effect of the adsorbent, impurities such as oxygen are separated out, and pure nitrogen is obtained and transported to the inside of the nitrogen tank 101 for storage management.

[0027] Refer to Figures 1 to 4 As shown, the present invention provides a box-type nitrogen generator with low-temperature preheating start and frequency conversion energy saving. A filtration pipeline 303 is installed through the back of the protective box 3, and both ends of the filtration pipeline 303 extend into the external space of the protective box 3. Conduits 302 are installed at both ends of the filtration pipeline 303 to facilitate the transmission of air. Flange fittings 304 are installed through the outer walls of the filtration pipeline 303 near both ends thereof.

[0028] Refer to Figures 2 to 7 As shown, the present invention provides a box-type nitrogen generator with low-temperature preheating start and frequency conversion energy saving. A transmission plate 408 is fixedly installed on the outer wall of the middle area of the transmission rod 402. Three fan blades 409 are fixedly installed on the outer side of the transmission plate 408 at equal intervals along the circumferential direction thereof. A partition plate 410 is installed on the side of the fan blade 409 away from the servo motor 4. A water-absorbing sponge 411 is fixedly installed on the inner wall of the fan blade 409 near the partition plate 410. A second electric control lifting column 413 is installed on the inner wall of the fan blade 409 near the partition plate 410. A rubber plate 412 is vertically installed at the output end of the second electric control lifting column 413. The second electric control lifting column 413 inputs a stable working current, drives the rubber plate 412 to contact one side of the water-absorbing sponge 411, and applies an additional extrusion force to the water-absorbing sponge 411 to squeeze out the water adsorbed by the water-absorbing sponge 411. A storage groove is formed on the inner wall of the fan blade 409 away from the partition plate 410 for storing the water discharged from the water-absorbing sponge 411; On the outer side of the fan blade plate 409 away from the transmission plate 408, an inner hollow annular plate 407 is fixedly installed, and the inside of the inner hollow annular plate 407 is in a flowing state with the storage tank. On the outer side of the inner hollow annular plate 407 away from the fan blade plate 409, an outer hollow annular plate 404 is movably sleeved. A separate storage space is jointly formed between the inside of the outer hollow annular plate 404 and the inside of the inner hollow annular plate 407 for storing the moisture flowing in from the storage tank. The outer hollow annular plate 404 is fixed to the inner side of the filter pipe 303. A first transmission pipe 403 is installed through the bottom of the outer hollow annular plate 404, and one end of the first transmission pipe 403 away from the outer hollow annular plate 404 is installed through the inside of the storage tank 401.

[0029] In the embodiment of the present application, the outer shape of the fan blade plate 409 is in a slightly curved state, which is convenient for accelerating the inflow of air. Semi-permeable membranes are laid on the outer walls of the partition plates 410 to isolate moisture.

[0030] The specific working process of this part of the application embodiment is as follows: When the control system determines that the moisture adsorbed by the partition plate 410 is in a saturated critical state, the control system controls the second electric control lifting column 413 to input a stable working current. The second electric control lifting column 413 inputs a stable working current, drives the rubber plate 412 to contact one side of the water-absorbing sponge 411, and applies an additional extrusion force to the water-absorbing sponge 411 to squeeze out the moisture adsorbed by the water-absorbing sponge 411. The moisture discharged by the water-absorbing sponge 411 is input into the storage tank of the fan blade plate 409, and is transported to the storage tank 401 through the inside of the inner hollow annular plate 407, the inside of the outer hollow annular plate 404, and the first transmission pipe 403 for storage management.

[0031] Refer to Figures 3 to 5 And Figures 8 to 9As shown, the present invention provides a box-type nitrogen generation device with variable frequency energy saving that can be preheated and started at low temperature. At the bottom in front of the dust removal tank 5, an air pump 501 is installed through. At the top of the dust removal tank 5, a second transmission pipe 502 is installed through. At the top of the second transmission pipe 502, a group of support rods 503 are installed through. An air flow channel is opened inside the group of support rods 503. At the top of the group of support rods 503, an auxiliary hollow ring 507 is installed through. At the middle position of the top of the auxiliary hollow ring 507, another group of support rods 503 are fixedly installed. The inside of the another group of support rods 503 is in a solid state, and at the end of the another group of support rods 503 away from the auxiliary hollow ring 507, it is vertically and fixedly installed on the inner wall of the filter pipe 303. The inner edge of the auxiliary hollow ring 507 is movably sleeved with an inner hollow column 506. An auxiliary conveying chamber is opened on the inner wall at the end of the inner hollow column 506 away from the auxiliary hollow ring 507, and a plurality of groups of auxiliary adsorption holes 509 are successively opened on the inner wall of the inner hollow column 506 near the auxiliary hollow ring 507. The plurality of groups of auxiliary adsorption holes 509 and the auxiliary conveying chamber of the inner hollow column 506 are in a mutually communicating state; On the outer side of the inner hollow column 506 away from the auxiliary hollow ring 507, cleaning plates 505 are successively and equidistantly installed. A circulation chamber is opened on the inner wall of the cleaning plate 505, a main adsorption hole is opened on the side of the cleaning plate 505, and a filter plate 504 is attached to the outer side of the cleaning plate 505 away from the auxiliary hollow ring 507. The filter plate 504 is installed on the inner wall of the filter pipe 303, and the installation positions of the filter plate 504 and the outer hollow annular plate 404 are opposite to each other; At the end of the transmission rod 402 away from the servo motor 4, a first electric control lifting column 405 is installed. The output end of the first electric control lifting column 405 is installed with an electromagnetic block 406. On the side of the inner hollow column 506 close to the electromagnetic block 406, a card slot 508 with a shape adapted to the electromagnetic block 406 is opened, and a magnetic suction force can be generated between the card slot 508 and the electromagnetic block 406; At one end of the inner wall of the filter pipe 303 away from the servo motor 4, a velocity flowmeter is installed, which is used to collect the air flow velocity inside the filter pipe 303 and transmit it to the control system. At the inner side of the middle position of the filter pipe 303, a humidity sensor is installed, which is used to monitor the humidity data in the middle area of the filter pipe 303 and transmit it to the control system.

[0032] The specific working process of the embodiment of this application is as follows: When the control system determines that the filter plate 504 is blocked, the first electric control lifting column 405 inputs a stable working current, driving the electromagnetic block 406 to move into the card slot 508. The electromagnetic block 406 inputs a stable working current, and a magnetic suction force can be generated between the electromagnetic block 406 and the card slot 508 to fix the electromagnetic block 406 inside the card slot 508. The rotational force generated by the servo motor 4 is transmitted through the transmission rod 402, the first electric control lifting column 405, the electromagnetic block 406, and the inner hollow column 506 to drive the cleaning plate 505 to perform synchronous rotation operations. The rotating cleaning plate 505 scrapes the surface of the filter plate 504. At the same time, the air pump 501 inputs a stable working current, generates a certain adsorption force, and transmits it to the surface of the filter plate 504 through the second transmission pipe 502, a group of support rods 503, the auxiliary hollow ring 507, the auxiliary adsorption holes 509, the auxiliary transport chamber inside the inner hollow column 506, the circulation chamber inside the cleaning plate 505, and the main adsorption holes on the side of the cleaning plate 505 to adsorb the dust generated by the scraping of its surface. The adsorbed dust is stored in the dust removal tank 5, which is convenient for the staff to clean later.

[0033] Reference Figures 1 to 9 As shown, the present invention provides a box-type nitrogen generation device with variable frequency energy saving that can be preheated and started at low temperature. The control system includes a threshold unit and a reminder module. When the threshold unit simulates the normal working state of the water-absorbing sponge 411, it generates simulated humidity data by the humidity sensor. When the threshold unit simulates the normal working state of the filter plate 504, it generates simulated air flow velocity by the velocity flowmeter. The threshold unit integrates the simulated humidity data and the simulated air flow velocity to form a threshold range; The control system compares the real-time air flow velocity with the threshold range. When the real-time flow velocity is less than the threshold range, it is determined that the filter plate 504 is blocked. When the real-time air flow velocity is greater than the threshold range, it is determined that the filter plate 504 is damaged; The control system compares the real-time humidity data with the threshold range. When the real-time humidity data is greater than the threshold range, it can be determined that the water-absorbing sponge 411 is in a state of saturated water adsorption.

[0034] In the embodiment of this application, after the control system controls the cleaning plate 505 to scrape and clean the filter plate 504 for 10 minutes, when the real-time air flow velocity is still greater than the threshold range, it can be determined that the filter plate 504 cannot be used normally. The control system controls the reminder module to remotely send a reminder message to the staff to remind them to repair the filter plate 504; After the control system manipulates the rubber plate 412 to perform a moisture removal operation on the water-absorbing sponge 411 for 15 minutes, if the real-time humidity data is still greater than the threshold range, it can be determined that the water-absorbing sponge 411 cannot be used normally. The control system manipulates the reminder module to remotely send a reminder message to the staff to remind them to repair the water-absorbing sponge 411.

[0035] The specific working process of this application is as follows: The production process of nitrogen: The air adsorbed by the nitrogen generation device 1 is cooled by the internal condenser inside it, and then input into the filtering pipeline 303 for filtering and dehumidification operations. The filtered and dehumidified air is input into the adsorption tower inside the nitrogen generation device 1 again. Through the adsorption of the adsorbent, impurities such as oxygen are separated out to obtain pure nitrogen and transported to the nitrogen tank 101 for storage management; The moisture adsorption recovery process: When the control system determines that the moisture adsorbed by the partition plate 410 is in a saturated critical state, the control system manipulates the second electronically controlled lifting column 413 to input a stable working current. The second electronically controlled lifting column 413 inputs a stable working current, drives the rubber plate 412 to contact one side of the water-absorbing sponge 411, and applies an additional extrusion force to the water-absorbing sponge 411 to squeeze out the adsorbed moisture of the water-absorbing sponge 411. The moisture discharged from the water-absorbing sponge 411 is input into the storage tank of the fan blade plate 409, and is transported to the storage tank 401 through the inside of the inner hollow annular plate 407, the inside of the outer hollow annular plate 404, and the first transmission pipe 403 for storage management; The blockage cleaning process: When the control system determines that the filter plate 504 is blocked, the first electronically controlled lifting column 405 inputs a stable working current, drives the electromagnetic block 406 to move into the card slot 508. The electromagnetic block 406 inputs a stable working current, and a magnetic suction force can be generated between the electromagnetic block 406 and the card slot 508 to fix the electromagnetic block 406 inside the card slot 508. The rotational force generated by the servo motor 4 is transmitted through the transmission rod 402, the first electronically controlled lifting column 405, the electromagnetic block 406, and the inner hollow column 506 to drive the cleaning plate 505 to perform synchronous rotation operations. The rotating cleaning plate 505 rubs against the surface of the filter plate 504. At the same time, the air pump 501 inputs a stable working current to generate a certain adsorption force and transmits it to the surface of the filter plate 504 through the second transmission pipe 502, a group of support rods 503, the auxiliary hollow ring 507, the auxiliary adsorption holes 509, the auxiliary conveying cabin inside the inner hollow column 506, the circulation cabin inside the cleaning plate 505, and the main adsorption holes on the side of the cleaning plate 505 to adsorb the dust generated by the rubbing of its surface. The adsorbed dust is stored in the dust removal tank 5 for convenient cleaning by the staff later.

[0036] The following points should be noted: First, in the description of this application, it should be noted that unless otherwise specified and defined, the terms "installed", "connected", and "coupled" should be understood in a broad sense, which can be a mechanical connection or an electrical connection, or the communication inside two components, and can be directly connected. The terms "upper", "lower", "left", "right", etc. are only used to represent the relative position relationship. When the absolute position of the object being described changes, the relative position relationship may change; Second: In the attached drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. For other structures, reference can be made to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other; Finally: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A variable frequency energy-saving box-type nitrogen generator capable of low temperature preheating and starting, characterized in that: include: A nitrogen generating device (1), wherein a nitrogen tank (101) is installed on the inner wall of the nitrogen generating device (1) for storing nitrogen; A control device (2) is used to control the nitrogen generating device (1) to perform nitrogen production operations, wherein the control device (2) is installed on the side of the top of the front of the nitrogen generating device (1), and a control system is arranged inside the control device (2); A protection box (3) is used to protect components required for air filtration, wherein the protection box (3) is installed in the middle area of ​​the top of the front of the nitrogen generating device (1), an electric control telescopic door (301) is installed on the inner wall in front of the protection box (3) to assist in protecting the components required for air filtration, a servo motor (4) is installed on the inner side surface of the protection box (3) near the control device (2), and a transmission rod (402) is installed on the output end of the servo motor (4); The inner side surface of the bottom end of the protection box (3) is provided with a dust removal tank (5) and a storage tank (401) in sequence, and the back side of the protection box (3) is provided with a filter pipe (303) penetrating therethrough, wherein both ends of the filter pipe (303) extend into the external space of the protection box (3); A velocity flow meter is installed on the inner wall of one end of the filter pipe (303) away from the servo motor (4), for collecting the air circulation velocity inside the filter pipe (303) and transmitting it to the control system; a humidity sensor is installed on the inner side surface at the middle position of the filter pipe (303), for monitoring the humidity data in the middle area of ​​the filter pipe (303), and transmitting it to the control system.

2. According to claim 1, a variable frequency energy-saving box-type nitrogen generator capable of low-temperature preheating startup is characterized in that: Delivery pipes (302) are installed at both ends of the filter pipe (303) to facilitate air transmission, and flange pipe fittings (304) are installed through the outer wall of the filter pipe (303) near both ends.

3. The low-temperature preheating start-up variable frequency energy-saving box-type nitrogen generator according to claim 1 is characterized in that: A transmission plate (408) is fixedly mounted on the outer wall of the middle region of the transmission rod (402); three sets of fan blades (409) are fixedly mounted on the outer side surface of the transmission plate (408) at equal distances along its circumferential direction; a partition plate (410) is mounted on the side of the fan blade plate (409) away from the position of the servo motor (4); a water-absorbing sponge (411) is fixedly mounted on the inner wall of the fan blade plate (409) near the position of the partition plate (410); and a second electric-controlled lifting column (411) is mounted on the inner wall of the fan blade plate (409) near the partition plate (410). 413), a rubber plate (412) is vertically mounted on the output end of the second electrically controlled lifting column (413), the second electrically controlled lifting column (413) inputs a stable working current, drives the rubber plate (412) to contact one side of the water-absorbing sponge (411), and applies an additional squeezing force to the water-absorbing sponge (411), thereby squeezing out the water absorbed by the water-absorbing sponge (411), and a storage groove is provided on the inner wall of the fan blade plate (409) away from the partition plate (410) for storing the water discharged from the water-absorbing sponge (411).

4. The low-temperature preheating start-up variable frequency energy-saving box-type nitrogen generator according to claim 3 is characterized in that: An inner hollow annular plate (407) is fixedly mounted on the outer side surface of the impeller plate (409) away from the transmission plate (408), and the interior of the inner hollow annular plate (407) is in a flow state with the storage tank. An outer hollow annular plate (404) is movably sleeved on the outer side surface of the inner hollow annular plate (407) away from the impeller plate (409), and an independent storage space is formed between the interior of the outer hollow annular plate (404) and the interior of the inner hollow annular plate (407) for storing water flowing into the storage tank. The outer hollow annular plate (404) is fixed to the inner side surface of the filter pipe (303), and a first transmission pipe (403) is installed through the bottom of the outer hollow annular plate (404), and one end of the first transmission pipe (403) away from the outer hollow annular plate (404) is installed through the interior of the storage tank (401).

5. The low-temperature preheating start-up variable frequency energy-saving box-type nitrogen generator according to claim 1 is characterized in that: An air pump (501) is installed through the bottom of the front of the dust removal tank (5), a second transmission pipe (502) is installed through the top of the dust removal tank (5), a group of support rods (503) is installed through the top of the second transmission pipe (502), an air flow channel is opened inside the group of support rods (503), an auxiliary hollow ring (507) is installed through the top of the group of support rods (503), another group of support rods (503) is fixedly installed at the middle position of the top of the auxiliary hollow ring (507), the inside of the other group of support rods (503) is solid, and the other group of support rods (503) The end of the filter element (503) away from the auxiliary hollow ring (507) is vertically fixedly installed on the inner wall of the filter pipe (303), and an inner hollow column (506) is movably sleeved at the inner edge of the auxiliary hollow ring (507). An auxiliary conveying cabin is provided on the inner wall of the inner hollow column (506) away from the auxiliary hollow ring (507), and a plurality of groups of auxiliary adsorption holes (509) are sequentially provided on the inner wall of the inner hollow column (506) near the auxiliary hollow ring (507), and the plurality of groups of auxiliary adsorption holes (509) and the auxiliary conveying cabin of the inner hollow column (506) are in a state of mutual flow.

6. The low-temperature preheating start-up variable frequency energy-saving box-type nitrogen generator according to claim 5 is characterized in that: Cleaning plates (505) are installed in sequence and at equal intervals on the outer side surface of the inner hollow column (506) away from the auxiliary hollow ring (507), and the inner wall of the cleaning plate (505) is provided with a flow chamber, and the side surface of the cleaning plate (505) is provided with a main adsorption hole, and the outer side surface of the cleaning plate (505) away from the auxiliary hollow ring (507) is attached with a filter plate (504), and the filter plate (504) is installed on the inner wall of the filter pipe (303), and the installation positions of the filter plate (504) and the outer hollow ring plate (404) are opposite to each other.

7. The low-temperature preheating start-up variable frequency energy-saving box-type nitrogen generator according to claim 5 is characterized in that: A first electrically controlled lifting column (405) is installed at one end of the transmission rod (402) away from the servo motor (4), an electromagnetic block (406) is installed at the output end of the first electrically controlled lifting column (405), and a slot (508) matching the shape of the electromagnetic block (406) is provided on the side of the inner hollow column (506) close to the electromagnetic block (406), and a magnetic attraction force can be generated between the slot (508) and the electromagnetic block (406).

8. A variable frequency energy-saving box-type nitrogen generator capable of low temperature preheating start-up according to any one of claims 3 and 6, characterized in that: The control system comprises a threshold unit and a reminder module, the threshold unit simulates the simulated humidity data generated by the humidity sensor when the water-absorbing sponge (411) is in a normal working state, the threshold unit simulates the simulated air circulation speed generated by the velocity flow meter when the filter plate (504) is in a normal working state, and the threshold unit integrates the simulated humidity data and the simulated air circulation speed to form a threshold range; The control system compares the real-time air circulation speed with the threshold range, and when the real-time air circulation speed is less than the threshold range, it is determined that the filter plate (504) is blocked, and when the real-time air circulation speed is greater than the threshold range, it is determined that the filter plate (504) is damaged; The control system compares the real-time humidity data with the threshold range, and when the real-time humidity data is greater than the threshold range, it can be determined that the water-absorbing sponge (411) is in a saturated state of water adsorption.

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