Purification and separation device and laboratory air purification method facilitating filter element replacement

Abstract

The invention discloses a purification and separation device which comprises a duplex air purification mechanism, two air inlet valves are fixedly installed at the two ends of an air inlet pipe correspondingly, filter elements are installed at the lower ends of two upper cylinders in a threaded mode correspondingly, and upper connecting pipes are fixedly installed on one sides of the two upper cylinders correspondingly; the two upper connecting pipes are connected with the two air inlet valves correspondingly, the two air outlet valves are installed at the two ends of the air outlet pipes correspondingly, linkage rods are installed between the air outlet valves and the corresponding air inlet valves correspondingly, the lower connecting pipes are fixedly installed on one sides of the two air outlet valves correspondingly, and the two upper connecting assemblies are installed at the bottoms of the two upper barrels correspondingly. An auxiliary barrel is fixedly installed on one side of the lower barrel, driving rods are installed on the upper connecting assembly, the linkage rod and the lower connecting assembly, and the multiple driving rods are rotationally connected with the connecting frame. Through the arrangement of the structure, the filter element can be replaced under the non-stop condition, and the replacement of the filter element is more convenient.

Description

Technical Field

[0001] The invention relates to the field of air purification devices, and in particular to a purification and separation device. Background Art

[0002] The laboratory is an important place for research and experiments. The air quality and humidity in the laboratory will affect the final experimental results. There are many precision instruments in the laboratory. These instruments will be corroded and damaged if exposed to humid air for a long time, which will increase costs and cause waste, and affect the progress of scientific research experiments. There are also some toxic gases decomposed during experiments in the laboratory. These gases are diffused in the air and can easily cause certain physical damage to the staff. In order to ensure the freshness of the air in the laboratory, it is generally necessary to install an air purification device in the laboratory.

[0003] The air purification device needs to replace the filter element after long-term use. The shell of the existing air purification device is generally connected by bolts, which is not convenient for installation and disassembly. Replacing the filter element is time-consuming and laborious. In addition, the air purification device cannot be used when the filter element is replaced, which affects the continuous purification of the air in the laboratory. Summary of the invention

[0004] The purpose of the present application is to provide a purification and separation device, which is provided with two upper cylinders and two lower cylinders, two air inlet valves are installed between the two upper cylinders, two air outlet valves are installed between the two lower cylinders, a linkage rod is fixedly installed between the valve core of the air inlet valve and the valve core of the corresponding air outlet valve, an upper connecting assembly is installed between the upper cylinder and the corresponding lower cylinder, a lower connecting pipe is fixedly installed on one side of the two air outlet valves, a sub-cylinder is fixedly installed on one side of the lower cylinder, a lower connecting assembly is installed between the sub-cylinder and the corresponding lower connecting pipe, and a driving rod is fixedly installed on the two upper connecting assemblies, the two linkage rods and the two lower connecting assemblies, and a plurality of driving rods They are all rotatably connected to the connecting frame. By toggling the connecting frame, the open air inlet valve and air outlet valve are converted into a closed state, the upper connecting assembly and the lower connecting assembly in the connected state are converted into a non-connected state, the lower cylinder on this side is removed, the filter element is replaced, and the upper connecting assembly and the lower connecting assembly in the non-connected state on the other side are converted into a connected state. Air still enters from the air inlet pipe, circulates through the upper cylinder and the lower cylinder on the other side, is filtered by the filter element on the other side, and is finally discharged from the air outlet pipe. Through the above-mentioned structural arrangement, the present invention can replace the filter element without stopping the machine, and the connection and disassembly of the lower cylinder is relatively convenient, which is convenient for replacing the filter element.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions: a purification and separation device, including a double air purification mechanism, the double air purification mechanism includes two upper cylinders, two lower cylinders, two inlet valves, an inlet pipe, two upper connecting components, an outlet pipe, two outlet valves, two lower connecting components and a connecting frame, the two inlet valves are respectively fixedly installed at the two ends of the inlet pipe, the lower ends of the two upper cylinders are both threadedly installed with filter elements, one side of the two upper cylinders is fixedly installed with upper connecting pipes, the two upper connecting pipes are respectively fixedly connected to the two inlet valves, the two outlet valves are respectively fixedly installed at the two ends of the outlet pipe, and a valve core of each outlet valve is fixedly installed with a valve core of the corresponding inlet valve. Linking rod, one side of the two air outlet valves is fixedly installed with a lower connecting pipe, the two upper connecting components are respectively installed at the bottom of the two upper cylinders, and the two lower cylinders are respectively arranged below the two upper cylinders. Rotating the upper connecting component can adjust the connection between the lower cylinder and the corresponding upper cylinder, and a sub-cylinder is fixedly installed on one side of the lower cylinder, the two lower connecting components are respectively installed at the bottom of the two lower connecting pipes, and the two sub-cylinders are respectively arranged below the two lower connecting pipes. Rotating the lower connecting component can adjust the connection between the sub-cylinder and the corresponding lower connecting pipe, and driving rods are fixedly installed on the two upper connecting components, the two linkage rods and the two lower connecting components, and multiple driving rods are rotatably connected to the connecting frame.

[0006] Preferably, the valve cores of the two inlet valves and the valve cores of the two outlet valves are arranged vertically, and the valve core of each inlet valve is arranged parallel to the valve core of the corresponding outlet valve.

[0007] Preferably, the upper connecting assembly includes a plurality of grooves, a plurality of connecting blocks and a limiting ring, a plurality of the grooves are fixedly installed in a circular array on the bottom of the upper cylinder, a plurality of the connecting blocks are fixedly installed in a circular array on the top of the lower cylinder, the grooves are U-shaped, the lower ends of the connecting blocks are inclined, each of the connecting blocks is inserted into the corresponding grooves, the limiting ring includes a connecting ring, a sleeve ring and a pushing ring, the connecting ring is rotatably installed on the bottom of the upper cylinder, the sleeve ring is fixedly installed on the lower end of the connecting ring, and the sleeve ring is sleeved on the outside of the plurality of grooves, the pushing ring is fixedly installed on the lower end of the sleeve ring, the push ring is provided with a plurality of notches in a circular array, and the structure of the lower connecting assembly is the same as that of the upper connecting assembly.

[0008] Preferably, a sealing ring is provided at the connection between the upper cylinder and the lower cylinder.

[0009] Preferably, it also includes a mounting mechanism, which includes a mounting frame, the two upper cylinders and the air outlet pipes are fixedly connected to the mounting frame, a crossbeam is fixedly installed in the middle of the mounting frame, and limiting sleeves are fixedly installed at both ends of the crossbeam, and the two limiting sleeves are respectively mounted on the two lower cylinders.

[0010] Preferably, two mounting plates are fixedly installed on the bottom of the mounting frame, a guide rod is fixedly installed between each of the limit sleeves and the corresponding mounting plate and a threaded rod is rotatably installed, a lifting plate is provided under the two lower cylinders, the guide rod and the threaded rod are inserted through the lifting plate, and the threaded rod is threadedly matched with the lifting plate, a lifting motor is fixedly installed on the limit sleeve, and the output end of the lifting motor is fixedly connected to one end of the threaded rod.

[0011] Preferably, a wall scraper assembly is installed in the lower cylinder, and the wall scraper assembly includes an inner toothed ring, an outer toothed ring, multiple gears and multiple rotating shafts. The inner toothed ring is fixedly installed at the bottom of the lower cylinder, and the outer toothed ring is rotatably installed at the bottom of the lower cylinder. The multiple gears are arranged in a ring array between the inner toothed ring and the outer toothed ring, and the multiple gears are meshed with the inner toothed ring and the outer toothed ring. Each of the rotating shafts is fixedly installed at the upper end of the corresponding gear, and multiple scraper plates are fixedly installed on the multiple rotating shafts. A wall scraper motor is fixedly installed at the lower end of the lower cylinder, and the output end of the wall scraper motor is inserted through the lower cylinder and fixedly connected to the inner toothed ring.

[0012] Preferably, a mounting ring is rotatably mounted on the top of the lower cylinder, and the upper ends of the plurality of rotating shafts are fixedly connected to the mounting ring.

[0013] Preferably, the distance between the rotating shaft and the inner wall of the lower cylinder is equal to the distance between the rotating shaft and the outer wall of the filter element, and both are equal to the width of the scraper plate.

[0014] Preferably, the present invention also provides a laboratory air purification method that is convenient for replacing filter elements, the method comprising the following steps:

[0015] In the initial state, the air inlet valve and the air outlet valve on one side are in an open state, the upper connecting assembly and the lower connecting assembly on the same side are in a connected state, the air inlet valve and the air outlet valve on the other side are in a closed state, and the upper connecting assembly and the lower connecting assembly on the other side are in a non-connected state. After entering from the air inlet pipe, the air enters the upper connecting pipe on one side from the opened air inlet valve, and then enters the upper cylinder on the same side, enters the lower cylinder after being filtered by the filter element, and finally passes through the auxiliary cylinder and the lower connecting pipe on the same side in sequence, and is discharged from the air outlet pipe through the opened air outlet valve;

[0016] After long-term use, the filter element needs to be replaced. Move the connecting frame from one side to the other, convert the open air inlet valve and air outlet valve into a closed state, convert the connected upper connecting assembly and lower connecting assembly into a non-connected state, remove the lower cylinder on that side, replace the filter element, convert the non-connected upper connecting assembly and lower connecting assembly on the other side into a connected state, and the air still enters from the air inlet pipe, circulates through the upper cylinder and lower cylinder on the other side, is filtered by the filter element on the other side, and is finally discharged from the air outlet pipe.

[0017] In summary, the technical effects and advantages of the present invention are as follows:

[0018] 1. In the present invention, two upper cylinders and two lower cylinders are provided, two inlet valves are installed between the two upper cylinders, two outlet valves are installed between the two lower cylinders, a linkage rod is fixedly installed between the valve core of the inlet valve and the valve core of the corresponding outlet valve, an upper connecting assembly is installed between the upper cylinder and the corresponding lower cylinder, a lower connecting pipe is fixedly installed on one side of the two outlet valves, a sub-cylinder is fixedly installed on one side of the lower cylinder, a lower connecting assembly is installed between the sub-cylinder and the corresponding lower connecting pipe, a driving rod is fixedly installed on the two upper connecting assemblies, the two linkage rods and the two lower connecting assemblies, and a plurality of driving rods are rotated with the connecting frame The air inlet and outlet valves are automatically connected by toggling the connecting frame, and the open air inlet valve and air outlet valve are converted into a closed state, and the upper connecting assembly and the lower connecting assembly in the connected state are converted into a non-connected state, and the lower cylinder on this side is removed to replace the filter element, and the upper connecting assembly and the lower connecting assembly in the non-connected state on the other side are converted into a connected state, and the air still enters from the air inlet pipe, circulates through the upper cylinder and the lower cylinder on the other side, is filtered by the filter element on the other side, and is finally discharged from the air outlet pipe. Through the above-mentioned structural arrangement, the present invention can replace the filter element without stopping the machine, and the connection and disassembly of the lower cylinder are relatively convenient, which is convenient for replacing the filter element.

[0019] 2. In the present invention, a limit sleeve and a mounting plate are installed at both ends of the mounting frame, a guide rod is fixedly installed between the corresponding mounting plates and a threaded rod is rotatably installed, a lifting plate is provided under the two lower cylinders, the guide rod and the threaded rod are both inserted through the lifting plate, and the threaded rod is matched with the lifting plate thread, a lifting motor is fixedly installed on the limit sleeve, the output end of the lifting motor is fixedly connected to one end of the threaded rod, the limit sleeve limits the lower cylinder, and the lifting plate supports the lower cylinder, the threaded rod is driven by the lifting motor, the lifting plate can be controlled to be lifted and lowered, thereby controlling the lifting and lowering of the lower cylinder, which is convenient for replacing the filter element.

[0020] 3. In the present invention, a scraper assembly is installed in the lower cylinder, and the scraper assembly includes an inner toothed ring, an outer toothed ring, multiple gears and multiple rotating shafts. The inner toothed ring is fixedly installed at the bottom of the lower cylinder, and the outer toothed ring is rotatably installed at the bottom of the lower cylinder. Multiple gears are arranged in a ring array between the inner toothed ring and the outer toothed ring, and multiple gears are meshed with the inner toothed ring and the outer toothed ring. Each rotating shaft is fixedly installed on the upper end of the corresponding gear, and multiple scraper plates are fixedly installed on the multiple rotating shafts. A scraper motor is fixedly installed at the lower end of the lower cylinder, and the output end of the scraper motor is inserted through the lower cylinder and fixedly connected with the inner toothed ring. The outer toothed ring is driven to rotate by the scraper motor, which drives multiple gears to rotate. The multiple gears act on the inner toothed ring, so that when the gear rotates along the outer toothed ring, it rotates at the same time. The multiple scraper plates on the rotating shaft can clean the inner wall of the lower cylinder and the outer wall of the filter element, reduce the accumulation of impurities in the lower cylinder and on the filter element, and increase the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the double air purification mechanism of the present invention;

[0024] Figure 3 It is a schematic cross-sectional structure diagram of the dual air purification mechanism of the present invention;

[0025] Figure 4 It is a schematic diagram of the cutaway structure of the lower cylinder of the present invention;

[0026] Figure 5 It is a structural schematic diagram of the upper connecting component of the present invention;

[0027] Figure 6 It is a structural schematic diagram of another angle of the present invention;

[0028] Figure 7 It is a structural schematic diagram of the wall scraping assembly of the present invention;

[0029] Figure 8 For the present invention Figure 7 Enlarged view of point A in the middle.

[0030] In the figure: 1. Installation mechanism; 101. Installation frame; 102. Crossbeam; 103. Limit sleeve; 104. Installation plate; 105. Guide rod; 106. Threaded rod; 107. Lifting plate; 2. Dual air purification mechanism; 201. Upper cylinder; 202. Lower cylinder; 203. Upper connecting pipe; 204. Inlet valve; 205. Inlet pipe; 206. Upper connecting assembly; 2061. Groove; 2062. Connecting block; 2063. Limit ring; 2 07, auxiliary cylinder; 208, lower connecting pipe; 209, outlet pipe; 210, outlet valve; 211, linkage rod; 212, lower connecting assembly; 213, driving rod; 214, connecting frame; 215, sealing ring; 216, filter element; 217, scraper assembly; 2171, inner toothed ring; 2172, outer toothed ring; 2173, gear; 2174, rotating shaft; 2175, scraper plate; 2176, mounting ring; 2177, scraper motor. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example 1: Reference Figure 1-Figure 4A purification and separation device shown in the figure includes a double air purification mechanism 2, and the double air purification mechanism 2 includes two upper cylinders 201, two lower cylinders 202, two air inlet valves 204, an air inlet pipe 205, two upper connecting components 206, an air outlet pipe 209, two air outlet valves 210, two lower connecting components 212 and a connecting frame 214, the two air inlet valves 204 are respectively fixedly installed at the two ends of the air inlet pipe 205, the lower ends of the two upper cylinders 201 are threadedly installed with filter elements 216, one side of the two upper cylinders 201 is fixedly installed with upper connecting pipes 203, the two upper connecting pipes 203 are respectively fixedly connected to the two air inlet valves 204, the two air outlet valves 210 are respectively fixedly installed at the two ends of the air outlet pipe 209, and a linkage rod 211 is fixedly installed between the valve core of each air outlet valve 210 and the valve core of the corresponding air inlet valve 204. 0 is fixedly installed with a lower connecting pipe 208 on one side, the two upper connecting components 206 are respectively installed at the bottom of the two upper cylinders 201, and the two lower cylinders 202 are respectively arranged below the two upper cylinders 201. Rotating the upper connecting component 206 can adjust the connection between the lower cylinder 202 and the corresponding upper cylinder 201. A secondary cylinder 207 is fixedly installed on one side of the lower cylinder 202. The two lower connecting components 212 are respectively installed at the bottom of the two lower connecting pipes 208, and the two secondary cylinders 207 are respectively arranged below the two lower connecting pipes 208. Rotating the lower connecting component 212 can adjust the connection between the secondary cylinder 207 and the corresponding lower connecting pipe 208. The two upper connecting components 206, the two linkage rods 211 and the two lower connecting components 212 are fixedly installed with a driving rod 213, and the multiple driving rods 213 are rotatably connected to the connecting frame 214.The valve cores of the two inlet valves 204 and the valve cores of the two outlet valves 210 are all arranged vertically, and the valve cores of each inlet valve 204 are arranged in parallel with the valve cores of the corresponding outlet valves 210. In the initial state, the inlet valve 204 and the outlet valve 210 on one side are in an open state, and the upper connecting component 206 and the lower connecting component 212 on the same side are in a connected state, and the inlet valve 204 and the outlet valve 210 on the other side are in a closed state, and the upper connecting component 206 and the lower connecting component 212 on the other side are in a non-connected state. After entering from the inlet pipe 205, the air enters the upper connecting pipe 203 on one side from the opened inlet valve 204, and then enters the upper cylinder 201 on the same side, and enters the lower cylinder 202 after being filtered by the filter element 216, and finally passes through the auxiliary cylinder 207 and the lower connecting pipe 208 on the same side in sequence, and exits from the opened outlet valve 210. The air is discharged through the air outlet pipe 209. After long-term use, the filter element 216 needs to be replaced, and the connecting frame 214 is pushed from one side to the other side. The opened air inlet valve 204 and the air outlet valve 210 are converted into a closed state, and the upper connecting component 206 and the lower connecting component 212 in the connected state are converted into a non-connected state. The lower cylinder 202 on this side is removed, and the filter element 216 is replaced. The upper connecting component 206 and the lower connecting component 212 in the non-connected state on the other side are converted into a connected state. The air still enters from the air inlet pipe 205, circulates through the upper cylinder 201 and the lower cylinder 202 on the other side, is filtered by the filter element 216 on the other side, and is finally discharged from the air outlet pipe 209. Through the above-mentioned structural arrangement, the present invention can replace the filter element 216 without stopping the machine, and the connection and disassembly of the lower cylinder 202 are relatively convenient, which is convenient for replacing the filter element 216.

[0033] Embodiment 2 is different from the above embodiment in that Figure 5As shown, the upper connecting component 206 includes a plurality of grooves 2061, a plurality of connecting blocks 2062 and a limiting ring 2063. The plurality of grooves 2061 are fixedly installed in an annular array at the bottom of the upper cylinder 201, and the plurality of connecting blocks 2062 are fixedly installed in an annular array at the top of the lower cylinder 202. The grooves 2061 are U-shaped, and the lower ends of the connecting blocks 2062 are inclined. Each of the connecting blocks 2062 is inserted into the corresponding grooves 2061. The limiting ring 2063 includes a connecting ring, a sleeve ring and a pushing ring. The connecting ring is rotatably installed at the bottom of the upper cylinder 201, the sleeve ring is fixedly installed at the lower end of the connecting ring, and the sleeve ring is sleeved on the outside of the plurality of grooves 2061, the pushing ring is fixedly installed at the lower end of the sleeve ring, and the pushing ring is provided with a plurality of notches in an annular array. The structure is the same as that of the upper connecting assembly 206. When the lower cylinder 202 is installed, the upper end of the lower cylinder 202 is aligned with the lower end of the upper cylinder 201, and the connecting block 2062 is inserted into the corresponding groove 2061 through the notch on the push ring. The limiting ring 2063 is rotated, and the push ring contacts the inclined surface of the lower end of the connecting block 2062, and the connecting block 2062 is pushed to continue to move toward the groove 2061 until the connecting block 2062 is completely immersed in the groove 2061. A sealing ring 215 is provided at the connection between the upper cylinder 201 and the lower cylinder 202. The upper cylinder 201 and the lower cylinder 202 cooperate to clamp the sealing ring 215 to complete the connection between the upper cylinder 201 and the lower cylinder 202, and ensure the sealing of the connection between the upper cylinder 201 and the lower cylinder 202. The limiting ring 2063 can be rotated in the reverse direction to release the connection between the upper cylinder 201 and the lower cylinder 202.

[0034] Embodiment 3 is different from the above embodiments in that Figure 6 As shown, it also includes a mounting mechanism 1, which includes a mounting frame 101. The two upper cylinders 201 and the air outlet pipe 209 are fixedly connected to the mounting frame 101. A crossbeam 102 is fixedly installed in the middle of the mounting frame 101. Both ends of the crossbeam 102 are fixedly installed with limiting sleeves 103. The two limiting sleeves 103 are respectively mounted on the two lower cylinders 202 to fix the dual air purification mechanism 2.

[0035] Two mounting plates 104 are fixedly installed at the bottom of the mounting frame 101, and a guide rod 105 is fixedly installed between each of the limiting sleeves 103 and the corresponding mounting plate 104, and a threaded rod 106 is rotatably installed. A lifting plate 107 is provided under the two lower cylinders 202, and the guide rod 105 and the threaded rod 106 are both inserted through the lifting plate 107, and the threaded rod 106 is threadedly matched with the lifting plate 107. A lifting motor is fixedly installed on the limiting sleeve 103, and the output end of the lifting motor is fixedly connected to one end of the threaded rod 106. The limiting sleeve 103 limits the lower cylinder 202, and the lifting plate 107 supports the lower cylinder 202. The threaded rod 106 is driven by the lifting motor to control the lifting and lowering of the lifting plate 107, thereby controlling the lifting and lowering of the lower cylinder 202, which is convenient for replacing the filter element 216.

[0036] Embodiment 4 is different from the above embodiments in that a wall scraping assembly 217 is installed in the lower cylinder 202. Figure 7 and Figure 8 As shown, the wall scraping assembly 217 includes an inner toothed ring 2171, an outer toothed ring 2172, a plurality of gears 2173 and a plurality of rotating shafts 2174. The inner toothed ring 2171 is fixedly mounted on the bottom of the lower cylinder 202, and the outer toothed ring 2172 is rotatably mounted on the bottom of the lower cylinder 202. The plurality of gears 2173 are arranged in an annular array between the inner toothed ring 2171 and the outer toothed ring 2172, and the plurality of gears 2173 are all meshed with the inner toothed ring 2171 and the outer toothed ring 2172. Each rotating shaft 2174 Fixedly installed on the upper end of the corresponding gear 2173, multiple scraper plates 2175 are fixedly installed on the multiple rotating shafts 2174, and a scraper motor 2177 is fixedly installed on the lower end of the lower cylinder 202. The output end of the scraper motor 2177 passes through the lower cylinder 202 and is fixedly connected to the inner toothed ring 2171. A mounting ring 2176 is rotatably installed on the top of the lower cylinder 202, and the upper ends of the multiple rotating shafts 2174 are fixedly connected to the mounting ring 2176 to support the rotating shaft 2174 and ensure the stability of the movement of the rotating shaft 2174. The outer toothed ring 2172 is driven to rotate by the scraper motor 2177, which drives the multiple gears 2173 to rotate. The multiple gears 2173 act on the inner toothed ring 2171, so that when the gear 2173 rotates along the outer toothed ring 2172, it rotates at the same time. The distance between the rotating shaft 2174 and the inner wall of the lower cylinder 202 is equal to the distance between the rotating shaft 2174 and the outer wall of the filter element 216, and both are equal to the width of the scraper plate 2175. The multiple scraper plates 2175 on the rotating shaft 2174 can clean the inner wall of the lower cylinder 202 and the outer wall of the filter element 216, reduce the accumulation of impurities in the lower cylinder 202 and on the filter element 216, and increase the service life.

[0037] Working principle:

[0038] In the initial state, the air inlet valve 204 and the air outlet valve 210 on one side are in an open state, and the upper connecting assembly 206 and the lower connecting assembly 212 on the same side are in a connected state. The air inlet valve 204 and the air outlet valve 210 on the other side are in a closed state, and the upper connecting assembly 206 and the lower connecting assembly 212 on the other side are in a non-connected state. After entering from the air inlet pipe 205, the air enters the upper connecting pipe 203 on one side from the opened air inlet valve 204, and then enters the upper cylinder 201 on the same side, and enters the lower cylinder 202 after being filtered by the filter element 216, and finally passes through the auxiliary cylinder 207 and the lower connecting pipe 208 on the same side in sequence, and is discharged from the air outlet pipe 209 through the opened air outlet valve 210;

[0039] During use, the outer toothed ring 2172 can be driven to rotate by the scraper motor 2177, driving the multiple gears 2173 to rotate. The multiple gears 2173 act on the inner toothed ring 2171, so that when the gears 2173 rotate along the outer toothed ring 2172, they rotate at the same time. The multiple scraper plates 2175 on the rotating shaft 2174 can clean the inner wall of the lower cylinder 202 and the outer wall of the filter element 216, thereby reducing the accumulation of impurities in the lower cylinder 202 and on the filter element 216 and increasing the use time.

[0040] After long-term use, the filter element 216 needs to be replaced. The connecting frame 214 is pushed from one side to the other side, and the open air inlet valve 204 and the air outlet valve 210 are converted to a closed state. The upper connecting component 206 and the lower connecting component 212 in the connected state are converted to a non-connected state. The threaded rod 106 is driven by the lifting motor on the same side to control the lifting plate 107 on the same side to descend, and the lower cylinder 202 is lowered accordingly. The filter element 216 is replaced, and the upper connecting component 206 and the lower connecting component 212 in the non-connected state on the other side are converted to a connected state. The air still enters from the air inlet pipe 205, circulates through the upper cylinder 201 and the lower cylinder 202 on the other side, is filtered by the filter element 216 on the other side, and is finally discharged from the air outlet pipe 209.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A purification and separation device, comprising a double air purification mechanism, characterized in that: The dual air purification mechanism comprises two upper cylinders, two lower cylinders, two air inlet valves, an air inlet pipe, two upper connecting components, an air outlet pipe, two air outlet valves, two lower connecting components and a connecting frame. The two air inlet valves are respectively fixedly installed at the two ends of the air inlet pipe, and the lower ends of the two upper cylinders are threadedly installed with filter elements. One side of the two upper cylinders is fixedly installed with upper connecting pipes, and the two upper connecting pipes are respectively fixedly connected to the two air inlet valves. The two air outlet valves are respectively fixedly installed at the two ends of the air outlet pipe, and a linkage rod is fixedly installed between the valve core of each air outlet valve and the valve core of the corresponding air inlet valve. A lower connecting rod is fixedly installed on one side of the two air outlet valves. Taking over, the two upper connecting components are respectively installed at the bottom of the two upper cylinders, and the two lower cylinders are respectively arranged below the two upper cylinders. Rotating the upper connecting component can adjust the connection between the lower cylinder and the corresponding upper cylinder. A sub-cylinder is fixedly installed on one side of the lower cylinder. The two lower connecting components are respectively installed at the bottom of the two lower connecting tubes, and the two sub-cylinders are respectively arranged below the two lower connecting tubes. Rotating the lower connecting component can adjust the connection between the sub-cylinder and the corresponding lower connecting tube, and driving rods are fixedly installed on the two upper connecting components, two linkage rods and two lower connecting components, and multiple driving rods are rotatably connected to the connecting frame.

2. A purification and separation device according to claim 1, characterized in that: The valve cores of the two inlet valves and the valve cores of the two outlet valves are arranged vertically, and the valve core of each inlet valve is arranged parallel to the valve core of the corresponding outlet valve.

3. A purification and separation device according to claim 1, characterized in that: The upper connecting assembly includes a plurality of grooves, a plurality of connecting blocks and a limiting ring. The plurality of grooves are fixedly installed at the bottom of the upper cylinder in an annular array, and the plurality of connecting blocks are fixedly installed at the top of the lower cylinder in an annular array. The grooves are U-shaped, and the lower ends of the connecting blocks are inclined. Each of the connecting blocks is inserted into the corresponding grooves. The limiting ring includes a connecting ring, a sleeve ring and a pushing ring. The connecting ring is rotatably installed at the bottom of the upper cylinder, the sleeve ring is fixedly installed at the lower end of the connecting ring, and the sleeve ring is sleeved on the outside of the plurality of grooves. The pushing ring is fixedly installed at the lower end of the sleeve ring, and the push ring is provided with a plurality of notches in an annular array. The structure of the lower connecting assembly is the same as that of the upper connecting assembly.

4. A purification and separation device according to claim 1, characterized in that: A sealing ring is arranged at the connection between the upper cylinder and the lower cylinder.

5. A purification and separation device according to claim 1, characterized in that: It also includes a mounting mechanism, which includes a mounting frame. The two upper cylinders and the air outlet pipe are fixedly connected to the mounting frame. A crossbeam is fixedly installed in the middle of the mounting frame. Limiting sleeves are fixedly installed at both ends of the crossbeam. The two limiting sleeves are respectively mounted on the two lower cylinders.

6. A purification and separation device according to claim 5, characterized in that: Two mounting plates are fixedly installed at the bottom of the mounting frame, a guide rod is fixedly installed between each limit sleeve and the corresponding mounting plate and a threaded rod is rotatably installed, a lifting plate is provided under the two lower cylinders, the guide rod and the threaded rod are inserted through the lifting plate, and the threaded rod is threadedly matched with the lifting plate, a lifting motor is fixedly installed on the limit sleeve, and the output end of the lifting motor is fixedly connected to one end of the threaded rod.

7. A purification and separation device according to claim 1, characterized in that: A wall scraper assembly is installed in the lower cylinder, and the wall scraper assembly includes an inner toothed ring, an outer toothed ring, multiple gears and multiple rotating shafts. The inner toothed ring is fixedly installed at the bottom of the lower cylinder, and the outer toothed ring is rotatably installed at the bottom of the lower cylinder. The multiple gears are arranged in a ring array between the inner toothed ring and the outer toothed ring, and the multiple gears are meshed with the inner toothed ring and the outer toothed ring. Each of the rotating shafts is fixedly installed at the upper end of the corresponding gear, and multiple scraper plates are fixedly installed on the multiple rotating shafts. A wall scraper motor is fixedly installed at the lower end of the lower cylinder, and the output end of the wall scraper motor is inserted through the lower cylinder and fixedly connected to the inner toothed ring.

8. A purification and separation device according to claim 7, characterized in that: A mounting ring is rotatably mounted on the top of the lower cylinder, and the upper ends of the plurality of rotating shafts are fixedly connected to the mounting ring.

9. A purification and separation device according to claim 7, characterized in that: The distance between the rotating shaft and the inner wall of the lower cylinder is equal to the distance between the rotating shaft and the outer wall of the filter element, and both are equal to the width of the scraper plate.

10. A method for purifying laboratory air using a purification and separation device as claimed in any one of claims 1 to 9, characterized in that: The method comprises the following steps: In the initial state, the air inlet valve and the air outlet valve on one side are in an open state, the upper connecting assembly and the lower connecting assembly on the same side are in a connected state, the air inlet valve and the air outlet valve on the other side are in a closed state, and the upper connecting assembly and the lower connecting assembly on the other side are in a non-connected state. After entering from the air inlet pipe, the air enters the upper connecting pipe on one side from the opened air inlet valve, and then enters the upper cylinder on the same side, enters the lower cylinder after being filtered by the filter element, and finally passes through the auxiliary cylinder and the lower connecting pipe on the same side in sequence, and is discharged from the air outlet pipe through the opened air outlet valve; After long-term use, the filter element needs to be replaced. Move the connecting frame from one side to the other, convert the open air inlet valve and air outlet valve into a closed state, convert the connected upper connecting assembly and lower connecting assembly into a non-connected state, remove the lower cylinder on that side, replace the filter element, convert the non-connected upper connecting assembly and lower connecting assembly on the other side into a connected state, and the air still enters from the air inlet pipe, circulates through the upper cylinder and lower cylinder on the other side, is filtered by the filter element on the other side, and is finally discharged from the air outlet pipe.

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