A lifting device

Abstract

The present invention discloses a lifting device, which is a lifting device for assembling and disassembling a purification electric field, composed of a bracket, a column, a first transmission wheel, a second transmission wheel, a first transmission chain and a lifting platform. Since the driving component drives the first transmission wheel to rotate, the lifting platform connected to the first transmission chain is lifted and lowered. When the purification unit of the hood-type oil fume purifier is disassembled and assembled, the lifting device for assembling and disassembling a purification electric field is placed under the hood-type oil fume purifier, and the lifting and lowering of the purification unit is achieved by using the lifting platform to support the purification unit. Buckles are fixed on two columns, and quick locks are arranged on the other two columns. When in use, the buckles are buckled on the lifting rings on the bottom surface of the purification box, and the quick locks are buckled with the long strip buckle grooves on the bottom surface of the purification box, so that the special disassembly and assembly tools can be quickly installed on the bottom surface of the hood-type oil fume purifier, and quick positioning can be achieved.

Description

Technical Field

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

[0002] The hood type oil fume purifier is used for oil fume purification in the catering industry. It is installed above the stove. During the rising process, the smoke enters the hood type oil fume purifier under the action of the fan in the hood type oil fume purifier for purification, so that the smoke meets the emission standards. Among them, the main component of the hood type oil fume purifier to achieve the purification function is the purification unit installed inside the casing, which purifies the smoke by filtering, adsorption and other methods. After a period of use, the purification unit will be stained with oil and smoke, which affects the purification efficiency, so it needs to be cleaned frequently.

[0003] The casing of the existing hood-type oil fume purifier is fixed on the wall, and the purification unit is fixed inside the casing. When replacing or cleaning the purification unit, the entire hood-type oil fume purifier needs to be disassembled for replacement, or the purification unit needs to be pulled out from the front of the casing for replacement. Since the purification unit is relatively bulky and needs to be moved down a certain height, it is quite troublesome.

[0004] When the purification unit of the hood-type oil fume purifier is arranged to be disassembled and assembled from the bottom of the hood-type oil fume purifier, due to the large gravity of the purification unit and the obstruction of the hood, it is difficult for workers to support the purification unit with great force. Therefore, the workers cannot support the purification unit with their strength, resulting in the purification unit being unable to be disassembled and assembled from the bottom of the hood-type oil fume purifier.

[0005] It can be seen that the existing technology still needs to be improved and enhanced. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a lifting device to solve the problem that it is inconvenient to disassemble and assemble the purification unit of the existing fume hood type oil fume purifier.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A lifting device comprises a bracket and two or more columns fixed on the bracket, the lower end of the column is rotatably connected to a first transmission wheel, the upper end of the column is rotatably connected to a second transmission wheel, and a first transmission chain is connected between the first transmission wheel and the second transmission wheel, a lifting platform is fixed on the first transmission chain, the first transmission wheel is rotatably connected to a driving assembly, and the driving assembly is fixed on the bracket.

[0009] In the lifting device, there are four columns, which are respectively fixed on the four corners of the bracket.

[0010] The lifting device also includes a first rotating shaft, and two first transmission wheels placed on the same side of the lifting platform are connected to the same first rotating shaft. The two first rotating shafts are transmission-connected, and the driving assembly is connected to one end of one of the first rotating shafts.

[0011] In the lifting device, a third transmission wheel is fixed in the middle of the two first rotating shafts, a second rotating shaft is connected between the two third transmission wheels, and fourth transmission wheels meshingly connected with the two third transmission wheels are respectively fixed at both ends of the second rotating shaft.

[0012] In the lifting device, the first connecting block and the second connecting block are fixedly connected at both ends of the first transmission chain, an adjusting screw is provided between the first connecting block and the second connecting block, the adjusting screw passes through the first connecting block and is threadedly connected to the second connecting block, and the lifting platform is connected to the second connecting block.

[0013] In the lifting device, a pin is provided between the first connecting block and the second connecting block, the pin is fixed on the second connecting block, and the lower end of the pin is slidably connected to the first connecting block.

[0014] In the lifting device, the cross section of the column is C-shaped, and the first transmission wheel, the second transmission wheel and the transmission chain are all placed in the column.

[0015] In the lifting device, the first connecting block and the second connecting block are slidably connected to the column.

[0016] In the lifting device, buckles are fixed on two adjacent columns, and quick locks are arranged on the other two columns; the quick locks include a connecting rod, a first connecting seat and a second connecting seat, the first connecting seat and the second connecting seat are fixed to the side of the column, the second connecting seat is placed above the first connecting seat, the connecting rod is vertically arranged and slidably connected to the first connecting seat and the second connecting seat, the connecting rod is provided with a first limiter below the first connecting seat, and the connecting rod is provided with a second limiter above the second connecting seat; the distance between the first limiter and the second limiter is greater than the distance between the first connecting seat and the second connecting seat; a handle is fixedly connected to the lower end of the connecting rod.

[0017] In the lifting device, the connecting rod is further provided with a third limiter between the first connecting seat and the second connecting seat, and the connecting rod is sleeved with an elastic member between the third limiter and the first connecting seat.

[0018] Beneficial effects:

[0019] 1. A lifting device for assembling and disassembling a purification electric field is composed of a bracket, a column, a first transmission wheel, a second transmission wheel, a first transmission chain and a lifting platform. Since the driving component drives the first transmission wheel to rotate, the lifting platform connected to the first transmission chain is lifted and lowered. When the purification unit of the hood-type oil fume purifier is disassembled and assembled, the lifting device for assembling and disassembling a purification electric field is placed under the hood-type oil fume purifier, and the lifting platform is used to lift and lower the purification unit to support the purification unit.

[0020] 2. Buckles are fixed on two columns, and quick locks are set on the other two columns. When in use, the buckles are buckled on the hanging rings on the bottom of the purification box, and the quick locks are buckled with the long buckle grooves on the bottom of the purification box, so that the special disassembly and assembly tools can be quickly installed on the bottom of the smoke hood type oil fume purifier, and quick positioning can be achieved.

[0021] 3. The quick lock includes a connecting rod, a first connecting seat and a second connecting seat, the first connecting seat and the second connecting seat are fixed to the side of the frame, the second connecting seat is placed above the first connecting seat, the connecting rod is vertically arranged and slidably connected to the first connecting seat and the second connecting seat, the connecting rod is provided with a first limit piece below the first connecting seat, and the connecting rod is provided with a second limit piece above the second connecting seat; when in use, the pin is first buckled on the hanging ring on the bottom surface of the purification box, and then the connecting rod is pushed up, and the second limit piece passes through the long buckle groove, and then the connecting rod is rotated so that the second limit piece is stuck on the long buckle groove, and the first limit piece abuts against the bottom of the first connecting seat, thereby realizing the rapid fixation of the special disassembly and assembly tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional diagram of a hood-type oil fume purifier.

[0023] Figure 2 The decomposition of the smoke hood type oil fume purifier Figure 1 .

[0024] Figure 3 The decomposition of the smoke hood type oil fume purifier Figure 2 .

[0025] Figure 4 yes Figure 1 Bottom view of .

[0026] Figure 5 yes Figure 4 A partial enlarged view of point A.

[0027] Figure 6 It is a structural diagram of the connecting parts.

[0028] Figure 7 It is an embodiment structure of a smoke hood type oil fume purifier Figure 1 .

[0029] Figure 8 It is an embodiment structure of a smoke hood type oil fume purifier Figure 2 .

[0030] Fig. 9 It is a three-dimensional special disassembly tool Figure 1 .

[0031] Fig.10 yes Fig. 9 Schematic diagram of the structure after removing the bracket and column.

[0032] Fig.11 yes Fig. 9 A partial enlarged view at point B.

[0033] Fig.12 It is a three-dimensional special disassembly tool Figure 2 .

[0034] Fig.13 This is a schematic diagram of the structure of the ejector pin used horizontally Figure 1 .

[0035] Fig.14 This is the main view of the ejector pin used horizontally Figure 1 .

[0036] Fig.15 This is the main view of the ejector pin used horizontally Figure 2 .

[0037] Fig.16 This is a schematic diagram of the structure of the ejector pin used horizontally Figure 2 .

[0038] Fig.17 It is a schematic diagram of the connection structure between the ejector pin used horizontally and the cathode frame.

[0039] Description of the main component symbols: 1.1-purification box, 1.2-fume hood, 1.3-air outlet, 1.4-electric control box, 1.5-purification unit, 1.51-anode substrate, 1.52-anode cylinder, 1.53-cathode frame, 1.6-connector, 1.61-connecting piece, 1.62-ball, 1.63-slot, 1.64-spring, 1.65-adjusting screw, 1.66-mounting sleeve, 1.67-handle, 1.7-through hole, 1.8-long strip buckle groove, 1.9-lifting ring, 1.10-baffle, 1.11-air inlet, 1.12-sealing plate;

[0040] 2-thimble, 2.1-base, 2.2-elastic element, 2.3-thimble cap, 2.4-screw, 2.5-internal thread sleeve;

[0041] 3.1-driving assembly, 3.2-bracket, 3.3-adjusting screw, 3.4-first connecting block, 3.5-second connecting block, 3.6-quick locking piece, 3.61-second limiting piece, 3.62-second connecting seat, 3.63-fourth limiting piece, 3.64-third limiting piece, 3.65-elastic piece, 3.66-first connecting seat, 3.67-first limiting piece, 3.7-cross bar, 3.68-handle, 3.69-connecting rod, 3.8-buckle, 3.9-positioning piece, 3.10-lifting platform, 3.11-second rotating shaft, 3.12-fourth transmission wheel, 3.13-third transmission wheel, 3.14-first rotating shaft, 3.15-first transmission wheel, 3.16-first transmission chain, 3.17-second transmission wheel, 3.18-column, 3.19-pin. DETAILED DESCRIPTION

[0042] The present invention provides a lifting device. To make the purpose, technical solution and effect of the present invention clearer and more specific, the present invention is further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the scope of protection of the present invention.

[0043] See also Figure 1 , Figure 2 , Figure 3 and Figure 4 A fume hood type oil fume purifier with convenient disassembly and assembly of a purification unit comprises a purification box 1.1 and a fume hood 1.2 fixed to the bottom surface of the purification box 1.1, a purification unit 1.5 is arranged inside the purification box 1.1, and a through hole 1.7 communicating with the fume hood 1.2 is arranged below the purification unit 1.5 in the purification box 1.1, the purification unit 1.5 passes through the through hole 1.7 from bottom to top and is arranged inside the purification box 1.1, a connector 1.6 is connected to the bottom surface of the purification box 1.1 and at the edge of the through hole 1.7, the purification unit 1.5 is fixed on the connector 1.6, and the edge refers to the position of the bottom surface of the purification box 1.1 close to the through hole 1.7.

[0044] Among them, the top view area of ​​the purification unit 1.5 is placed inside the through hole 1.7, and one end of the connecting piece 1.6 can be rotated into the through hole 1.7 to realize the fixed connection of the connecting piece 1.6 and the purification unit 1.5; the connecting piece 1.6 can also be rotated to a position other than the through hole 1.7, that is, when the purification unit 1.5 is disassembled and assembled, the connecting piece 1.6 is rotated to a position other than the through hole 1.7, so that the purification unit 1.5 can be pulled downward out of the through hole 1.7.

[0045] In the above structure, when the purification unit 1.5 is disassembled, a special disassembly and assembly tool with a lifting structure is placed on the stove or hung on the bottom surface of the purification box 1.1, and then the lifting structure is driven to rise, so that the lifting structure is supported on the bottom surface of the purification unit 1.5, and then the connecting member 1.6 is rotated so that the connecting member 1.6 is moved away from the position of the through hole 1.7, and then the lifting structure is driven to descend, and the purification unit 1.5 is pulled out from the bottom of the smoke hood 1.2, and the disassembly of the purification unit 1.5 is completed. When installing the purification unit 1.5, the steps are opposite, that is, firstly, a special disassembly and assembly tool with a lifting structure is placed on the stove or hung on the bottom surface of the purification box 1.1, and the lifting structure is in the lowest state, and then the purification unit 1.5 is placed on the lifting structure, and then the lifting structure is driven to rise, so that the purification unit 1.5 is inserted from the through hole 1.7 into the inside of the purification box 1.1, and then the connecting member 1.6 is rotated so that the purification unit 1.5 is placed on the connecting member 1.6, and the installation of the purification unit 1.5 is completed.

[0046] When disassembling and assembling the purification unit 1.5, since special tools are used to disassemble it from the bottom of the smoke hood 1.2, there is no need to manually move the relatively heavy purification unit 1.5 at a high position. Only the lifting and lowering of the lifting structure of the special tool and the rotation of the connecting piece 1.6 need to be manually controlled, which greatly reduces the labor intensity of the workers and makes it more convenient to clean, replace and maintain the smoke hood 1.2.

[0047] In the above, when the purification unit 1.5 is disassembled, the special disassembly tool passes through the inside of the smoke hood 1.2. Therefore, the water baffle, oil-water separator and other structures installed inside the smoke hood 1.2 are installed in a detachable manner, so that before disassembling the purification unit 1.5, the structure inside the smoke hood 1.2 is disassembled so that it does not affect the disassembly of the purification unit 1.5. Among them, a fan for driving air flow can also be detachably connected inside the smoke hood 1.2 or inside the purification box 1.1.

[0048] The purification unit 1.5 may be a filter, such as an activated carbon filter, or an electrostatic field.

[0049] See also Figure 5 and Figure 6 The connecting member 1.6 includes a connecting piece 1.61, one end of which is rotatably connected to the bottom surface of the purification box 1.1, and the other end of which is in contact with the bottom surface of the purification unit 1.5. In practical applications, the purification unit 1.5 can be connected to the connecting piece 1.61 by screws to improve the firmness of the connection position.

[0050] In a preferred embodiment, the connecting member 1.6 also includes a glass bead screw placed on one side of the connecting piece 1.61, and the glass bead screw includes a mounting sleeve 1.66 vertically fixed to the bottom surface of the purification box 1.1, a spring 1.64 and a ball 1.62 placed inside the mounting sleeve 1.66, and the ball 1.62 is placed below the spring 1.64, and a notch 1.63 is provided on the connecting piece 1.61 corresponding to the position of the ball 1.62, and when the connecting piece 1.61 is in abutment with the purification unit 1.5, the ball 1.62 is stuck in the notch 1.63. Among them, the ball 1.62 passes through one end of the mounting sleeve 1.66, and a notch 1.63 is provided to cooperate with the ball 1.62, so that after the ball 1.62 is placed in the notch 1.63, if there is no force in the rotation direction of the connecting piece 1.61, the position of the connecting piece 1.61 is stuck by the ball 1.62 and fixed. When the worker rotates the connecting piece 1.61 by external force, the spring 1.64 contracts, so that the ball 1.62 can be moved out of the notch 1.63. Therefore, when in use, after installing the purification unit 1.5, the connecting piece 1.61 can be manually rotated so that one end of the connecting piece 1.61 is placed under the purification unit 1.5, and no additional fixing is required. The notch 1.63 can be a pit, a through hole or a blind hole.

[0051] In a further preferred embodiment, the mounting sleeve 1.66 is provided with an adjusting screw 1.65 at one end away from the ball 1.62, and the tightness of the spring 1.64 is adjusted by turning the adjusting screw 1.65 so that the ball 1.62 has enough force to prevent the connecting piece 1.61 from rotating.

[0052] In practical applications, in order to facilitate the movement of the connecting piece 1.61, a handle 1.67 may be fixed to the bottom surface of the connecting piece 1.61.

[0053] In a preferred embodiment, the purification unit 1.5 is an electrostatic electric field, and the upper end of the purification box 1.1 corresponding to the through hole 1.7 is provided with a pin 2 connected to the cathode frame 1.53 of the electrostatic electric field, and an electric control box 1.4 is fixed on the front of the purification box 1.1, and the pin 2 passes through the purification box 1.1 and is connected to the power supply in the electric control box 1.4. After the electrostatic electric field is installed, the pin 2 abuts against the cathode frame 1.53, so that the cathode frame 1.53 and the power supply in the electric control box 1.4 are connected by wires.

[0054] See also Figure 8In a preferred embodiment, the electrostatic electric field is arranged horizontally, and a baffle 1.10 is fixed below the electrostatic electric field, the baffle 1.10 is connected to the connector 1.6, and the baffle 1.10 abuts against the bottom surface of the purification box 1.1. That is, after the electrostatic electric field is installed, the baffle 1.10 seals the through hole 1.7 to prevent the smoke from passing there. In this embodiment, the electrostatic electric field can be a honeycomb electric field or a plate electric field. The electrostatic electric field is placed in the middle of the purification box 1.1, and one end of the purification box 1.1 is provided with an air inlet 1.11 connected to the smoke hood 1.2, and the other end is provided with an air outlet 1.3, so that the smoke enters the interior of the purification box 1.1 from one end of the purification box 1.1, and is discharged from the other end through the purification electric field, thereby purifying the smoke.

[0055] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7 In a preferred embodiment, the electrostatic electric field is a honeycomb electric field, which is arranged vertically, that is, the honeycomb electric field includes an anode cylinder 1.52, an anode substrate 1.51 connected to both ends of the anode cylinder 1.52, a cathode frame 1.53 fixed to the anode substrate 1.51 through an insulator, a cathode needle (not shown) fixed to the cathode frame 1.53 and inserted at one end in the center of the anode cylinder 1.52, and a side plate 1.54 connected to the anode substrate 1.51 at both ends. A sealing plate 1.12 is provided inside the electric control box, and the side surface of the honeycomb electric field abuts against the sealing plate 1.12. After the honeycomb electric field is installed, the side plate of the honeycomb electric field is attached to the sealing plate 1.12. That is, the anode substrate 1.51 of the honeycomb electric field is arranged at the lower end and is connected to the connector 1.6, and the edge of the anode substrate 1.51 connected to the connector 1.6 abuts against the bottom surface of the electric control box 1.4, the top surface of the purification box 1.1 is provided with an air outlet 1.3, and the lower end of the honeycomb electric field is directly connected to the smoke hood 1.2.

[0056] Preferably, the sealing plate 1.12 has a folded edge at the upper end, and the top surface of the anode substrate 1.51 at the upper end of the honeycomb electric field abuts against the folded edge of the sealing plate 1.12 to achieve sealing between the honeycomb electric field and the sealing plate, so that all gases that need to be purified pass through the inside of the honeycomb electric field.

[0057] In a preferred embodiment, there are two groups of electrostatic electric fields, and two through holes 1.7 are correspondingly provided on the bottom surface of the purification box 1.1.

[0058] In a preferred embodiment, a sealing ring is provided on the folded edge of the upper end of the sealing plate 1.10, and the sealing ring can be made of rubber or silicone material to ensure the sealing connection between the sealing plate and the honeycomb electric field. Since the sealing ring has a certain shrinkage ability, when disassembling and assembling with special tools, the lifting structure can be used to lift the purification unit 1.5 to a slight height, so as to facilitate the rotation of the connecting piece 1.61.

[0059] The bottom surface of the purification box 1.1 is provided with a lifting ring 1.9 for lifting the special tool. The lifting ring 1.9 can also be fixed on one side of the through hole 1.7, and a long strip buckle groove 1.8 is provided on the side opposite to the lifting ring 1.9. When in use, the special tool is connected to the lifting ring 1.9 and the long strip buckle groove 1.8. Preferably, the bracket of the purification box 1.1 is made of a square tube, and the long strip buckle groove 1.8 is provided on the square tube, so after the long strip buckle groove 1.8 is provided, the long strip buckle groove 1.8 will not be connected to the inside of the purification box 1.1.

[0060] See also Fig.13 and Fig.16 In the above, the ejector pin 2 includes a base 2.1, an elastic element 2.2 and an ejector cap 2.3. The base 2.1, the elastic element 2.2 and the ejector cap 2.3 are all made of conductive materials. One end of the elastic element 2.2 is fixedly connected to an end face of the base 2.1, and the other end of the elastic element 2.2 is fixedly connected to the ejector cap 2.3. The elastic element 2.2 can bend when subjected to force, and the elastic element 2.2 can be reset after the external force disappears, that is, it returns to a straight state. Specifically, the base 2.1 is used to connect to the power supply of the air purifier and is fixed to the insulator. The insulator is used to fix the power supply to prevent the power supply from contacting the air purifier housing. The ejector cap 2.3 is used to abut against the cathode frame, and the elastic element 2.2 is used to connect the base 2.1 and the ejector cap 2.3, thereby realizing the electrical connection between the power supply and the cathode frame.

[0061] In practical applications, the elastic element 2.2 and the base 2.1, and the elastic element 2.2 and the ejector cap 2.3 may also be rotatably connected.

[0062] When the above-mentioned horizontal ejector pin 2 is in use, the cathode frame abuts against the side of the ejector cap 2.3, and the bendability of the elastic element 2.2 can eliminate the distance error between the cathode frame and the power supply position, and under the action of the restoring force of the elastic element 2.2, the ejector cap 2.3 is in better contact with the cathode frame.

[0063] In a preferred embodiment, the elastic element 2.2 is a spring.

[0064] In a preferred embodiment, the base 2.1 is sleeve-shaped, and the base 2.1 and the spring, and the thimble cap 2.3 and the spring are fixedly connected by screws 2.4. The base 2.1 is sleeve-shaped to facilitate the installation of the screws 2.4 connecting the base 2.1 and the spring, that is, the nut end of the screw 2.4 can be placed inside the base 2.1, and the screw end of the screw 2.4 extends outside the base 2.1 and is threadedly connected to the spring, so as to realize the connection of the screw 2.4 between the base 2.1 and the spring. A central through hole is provided in the center of the thimble cap 2.3, and the screw 2.4 passes through the central through hole to connect with the spring.

[0065] See also Fig.14 In a preferred embodiment, the outer diameter of the screw 2.4 is matched with the inner diameter of the spring, that is, the thread of the screw 2.4 is matched with the inner wall of the spring. Since the inner wall of the spring is also threaded, the screw 2.4 is connected to the spring through the thread of the screw 2.4, so as to achieve a fixed connection between the screw 2.4 and the spring. No additional connecting parts are required, and the connection is convenient.

[0066] See also Fig.15 In a preferred embodiment, internal thread sleeves 2.5 are fixed at both ends of the spring, and screws 2.4 are fixed on the internal thread sleeves 2.5. In this embodiment, the internal thread sleeves 2.5 are welded inside the spring, and the screws 2.4 are threadedly connected with the internal thread sleeves 2.5 to achieve a fixed connection between the spring and the screws 2.4.

[0067] In a preferred embodiment, the pitch of the middle part of the spring is greater than the diameter of the spring wire, so that the spring has a certain compression capacity, so that the ejector pin can also be installed like the existing ejector pin, that is, after installation, the spring is subjected to axial pressure and contracts, eliminating the distance error between the cathode frame and the power supply position.

[0068] In the above structure, the elastic element 2.2 can also be an elastic steel sheet, which means that the steel sheet has a certain bending ability. When subjected to pressure, the steel sheet bends to eliminate the distance error between the cathode frame and the power supply position. After the pressure is eliminated, the steel sheet can return to a straight state.

[0069] See also Fig.16 In one embodiment, the ejector cap 2.3 is in the shape of a ring, and a plurality of small teeth are evenly distributed on the edge thereof.

[0070] See also Fig.17 In one embodiment, in order to make the ejector cap 2.3 better contact with the cathode frame, the ejector cap 2.3 can be set to a cone shape with a number of small teeth evenly distributed on its edge.

[0071] See also Fig. 9 and Fig.10 A lifting device includes a bracket 3.2 and two or more columns 3.18 fixed on the bracket 3.2, the lower end of the column 3.18 is rotatably connected to a first transmission wheel 3.15, the upper end of the column 3.18 is rotatably connected to a second transmission wheel 3.17, and a first transmission chain 3.16 is connected between the first transmission wheel 3.15 and the second transmission wheel 3.17, a lifting platform 3.10 is fixed on the first transmission chain 3.16, the first transmission wheel 3.15 is transmission-connected to a driving assembly 3.1, and the driving assembly 3.1 is fixed on the bracket 3.2.

[0072] When the driving component 3.1 drives the first transmission wheel 3.15 to rotate, it drives the first transmission chain 3.16 to move, so that the first transmission chain 3.16 drives the lifting platform 3.10 connected thereto to rise and fall. The driving component 3.1 can be a motor or a rotary cylinder.

[0073] In a preferred embodiment, in order to make the force of the bracket 3.2 more balanced, the number of the columns 3.18 is preferably four, and the four columns are respectively fixed on the four corners of the bracket 3.2. The following uses four columns 3.18 as an example for explanation. In practical applications, the number of the columns 3.18 can also be two, three or more.

[0074] Specifically, the lifting device further comprises a first rotating shaft 3.14, two first transmission wheels 3.15 disposed on the same side of the lifting platform 3.10 are connected to the same first rotating shaft 3.14, the two first rotating shafts 3.14 are transmission-connected to each other, and the driving assembly 3.1 is connected to one end of one of the first rotating shafts 3.14. That is, there are four first transmission wheels 3.15 on the four columns 3.18, wherein the lifting device is divided into two sides, the two first transmission wheels 3.15 on each side are fixed to the same first rotating shaft 3.14, and the two first rotating shafts 3.14 are transmission-connected, so that when the driving assembly 3.1 drives one of the first rotating shafts 3.14 to rotate, all the first transmission wheels 3.15 rotate synchronously, so that the lifting platform 3.10 is lifted and lowered smoothly.

[0075] The transmission connection between the two first rotating shafts 3.14 includes the following structure: a third transmission wheel 3.13 is fixed in the middle of the two first rotating shafts 3.14, a second rotating shaft 3.11 is connected between the two third transmission wheels 3.13, and fourth transmission wheels 3.12 meshingly connected with the two third transmission wheels 3.13 are respectively fixed at both ends of the second rotating shaft 3.11. The third transmission wheel 3.13 and the fourth transmission wheel 3.12 can be bevel gears or worm gear structures.

[0076] In practical applications, the two first rotating shafts 3.14 can also be driven by a chain, that is, a third transmission wheel 3.13 is fixed in the middle of the two first rotating shafts 3.14, and a second transmission chain is connected between the two third transmission wheels 3.13, that is, the second transmission chain replaces the structure composed of the second rotating shaft 3.11 and the fourth transmission wheel 3.12 mentioned above.

[0077] In a preferred embodiment, the first transmission chain 3.16 has a first connecting block 3.4 and a second connecting block 3.5 fixedly connected at both ends, an adjusting screw 3.3 is provided between the first connecting block 3.4 and the second connecting block 3.5, the adjusting screw 3.3 passes through the first connecting block 3.4 and is threadedly connected to the second connecting block 3.5, and the lifting platform 3.10 is connected to the second connecting block 3.5.

[0078] In the above, a certain distance is left between the first connection block 3.4 and the second connection block 3.5, so that the distance between the first connection block 3.4 and the second connection block 3.5 can be adjusted by adjusting the screw 3.31.65 to adjust the tightness of the first transmission chain 3.16.

[0079] In a preferred embodiment, a pin 3.19 is provided between the first connection block 3.4 and the second connection block 3.5, the pin 3.19 is fixed on the second connection block 3.5, and the lower end of the pin 3.19 is slidably connected to the first connection block 3.4. Through the provision of the pin 3.19, only one adjusting screw 3.31.65 can be used between the first connection block 3.4 and the second connection block 3.5, so as to facilitate the adjustment of the distance between the first connection block 3.4 and the second connection block 3.5, and at the same time, the first connection block 3.4 and the second connection block 3.5 can be prevented from rotating around the adjusting screw 3.31.65, that is, the distance between the first connection block 3.4 and the second connection block 3.5 can be prevented from increasing during use.

[0080] In a preferred embodiment, the cross section of the column 3.18 is C-shaped, that is, a slide groove connected to the outside is provided on the side of the column 3.18, the first transmission wheel 3.15, the second transmission wheel 3.17 and the transmission chain are all placed in the column 3.18, and the first connection block 3.4 and the second connection block 3.5 are slidably connected to the slide groove of the column 3.18, so that the lifting platform 3.10 is more stable when lifting. In actual application, the column 3.18 can also be a square tube, and a slide rail is provided on the side of the column 3.18, and the first connection block 3.4 and the second connection block 3.5 are slidably connected to the slide rail.

[0081] See also Fig. 9 and Fig.11 When the lifting device is used to facilitate the disassembly and assembly of the purification unit 1.5 of the smoke hood type oil fume purifier, buckles 3.8 are fixed on two adjacent columns 3.18, and quick locks 3.6 are set on the other two columns 3.18. When in use, the buckle 3.8 is buckled on the lifting ring 1.9 on the bottom surface of the purification box 1.1, and the quick lock 3.6 is buckled with the long strip buckle groove 1.8 on the bottom surface of the purification box 1.1, so that the special disassembly and assembly tool can be quickly installed on the bottom surface of the smoke hood 1.2 machine and positioned.

[0082] Among them, the quick locking member 3.6 includes a connecting rod 3.69, a first connecting seat 3.66 and a second connecting seat 3.62. The first connecting seat 3.66 and the second connecting seat 3.62 are fixed to the side of the frame, and the second connecting seat 3.62 is placed above the first connecting seat 3.66. The connecting rod 3.69 is vertically arranged and slidably connected to the first connecting seat 3.66 and the second connecting seat 3.62. The connecting rod 3.69 is provided with a first limiting member 3.67 below the first connecting seat 3.66, and the connecting rod 3.69 is provided with a second limiting member 3.61 above the second connecting seat 3.62; the distance between the first limiting member 3.67 and the second limiting member 3.61 is greater than the distance between the first connecting seat 3.66 and the second connecting seat 3.62.

[0083] In the above structure, when in use, the buckle ring 3.8 is first buckled on the lifting ring 1.9 on the bottom surface of the purification box 1.1, and then the connecting rod 3.69 is pushed upward, and the second limiter 3.61 passes through the long strip buckle groove 1.8, and then the connecting rod 3.69 is rotated, so that the second limiter 3.61 is stuck on the long strip buckle groove 1.8, and the first limiter 3.67 is abutted under the first connecting seat 3.66, so that the special disassembly and assembly tool is fixed. Then, the lifting structure is driven to support the purification unit 1.5 and realize the disassembly and assembly of the purification unit 1.5.

[0084] In the above, the second limit member 3.61 is arranged in coordination with the position of the long buckle groove 1.8. Therefore, when the buckle 3.8 is buckled on the hanging ring 1.9 on the bottom surface of the purification box 1.1 and the second limit member 3.61 is stuck on the long buckle groove 1.8, the special disassembly and assembly tool is fixed and the positioning of the special disassembly and assembly tool relative to the smoke hood 1.2 is achieved.

[0085] In a preferred embodiment, the connecting rod 3.69 is further provided with a third stopper 3.64 between the first connecting seat 3.66 and the second connecting seat 3.62, and the connecting rod 3.69 is sleeved with an elastic member 3.65 between the third stopper 3.64 and the first connecting seat 3.66. The elastic member 3.65 is used to overcome the gravity of the connecting rod 3.69 to make it in an upward state, and it can be a compression spring, that is, when in use, it is only necessary to rotate the second stopper 3.61 to the position where the long strip buckle groove 1.8 is configured, and the connecting rod 3.69 is lifted up under the action of the elastic member 3.65, so that the second stopper 3.61 is automatically inserted into the long strip buckle groove 1.8, so that the special disassembly tool can be fixed on the smoke hood 1.2 more conveniently and quickly.

[0086] In a preferred embodiment, the connecting rod 3.69 is provided with a fourth stopper 3.63 between the first connecting seat 3.66 and the second connecting seat 3.62 and above the third stopper 3.64, and the distance between the fourth stopper 3.63 and the first stopper 3.67 is equal to the distance between the first connecting seat 3.66 and the second connecting seat 3.62. When the special disassembly tool is fixed on the smoke hood 1.2, the first stopper 3.67 abuts against the bottom of the first connecting seat 3.66, and the fourth stopper 3.63 also abuts against the bottom of the second connecting seat 3.62, reducing the force on the first stopper 3.67.

[0087] In a preferred embodiment, the first limiting member 3.67, the third limiting member 3.64 and the fourth limiting member 3.63 are rings welded on the connecting rod 3.69, and the second limiting member 3.61 is a transversely arranged pin, and the pin is fixed to the upper end of the connecting rod 3.69.

[0088] In a preferred embodiment, the first limiting member 3.67, the second limiting member 3.61, the third limiting member 3.64 and the fourth limiting member 3.63 are transversely arranged pins, and the pins are fixedly connected to the connecting rod 3.69.

[0089] In a preferred embodiment, in order to facilitate the rotation of the connecting rod 3.69, a handle 3.68 is fixedly connected to the lower end of the connecting rod 3.69.

[0090] See also Fig. 9 Preferably, the top surface of the lifting platform 3.10 is provided with a positioning member 3.9, which can be a positioning column, and the bottom surface of the purification unit 1.5 is provided with a positioning groove that matches the positioning column. When in use, the positioning column is inserted into the positioning groove. Preferably, in order to facilitate the cooperation between the positioning column and the positioning groove, the positioning column is conical.

[0091] See also Fig.12 The positioning member 3.6 may also be a positioning block, which cooperates with the side of the purification unit 1.5. In this embodiment, the area of ​​the lifting platform 3.10 in the top view direction is smaller than the area of ​​the purification unit 1.5, so as not to affect the connection between the connecting member and the purification unit 1.5.

[0092] In practical applications, in order to improve the stability of the column, a cross bar 3.7 is provided at the upper end of the column, and the cross bar 3.7 is fixedly connected to the upper ends of two adjacent columns.

[0093] A method for disassembling and assembling a purification unit of the hood-type oil fume purifier comprises the following steps:

[0094] When installing the purification unit: fix the special disassembly and assembly tool on the bottom surface of the purification box of the hood-type oil fume purifier; lower the lifting platform on the special disassembly and assembly tool to the lowest position, and rotate the connecting piece to the outside of the through hole; place the purification unit on the lifting platform; drive the lifting platform to rise so that the purification unit passes through the through hole and is placed inside the purification box; rotate the connecting piece so that one end of the connecting piece abuts against the bottom surface of the purification unit; drive the lifting platform to descend, remove the special disassembly and assembly tool from the bottom surface of the purification box of the hood-type oil fume purifier, and complete the installation of the purification unit.

[0095] When disassembling the purification unit: fix the special disassembly and assembly tool on the bottom surface of the purification box of the fume hood type oil fume purifier; drive the lifting platform to rise and abut against the bottom surface of the purification unit; rotate the connecting piece to the outside of the through hole; drive the lifting structure to descend to pull the purification unit out of the through hole; drive the lifting platform to descend to the lowest position and remove the purification unit from the lifting platform; remove the special disassembly and assembly tool from the bottom surface of the purification box of the fume hood type oil fume purifier to complete the disassembly of the purification unit.

[0096] In the present invention, the lifting device for assembling and disassembling the purification electric field is composed of a bracket 3.2, a column 3.18, a first transmission wheel 3.15, a second transmission wheel 3.17, a first transmission chain 3.16 and a lifting platform 3.10, and the driving component 3.1 drives the first transmission wheel 3.15 to rotate, so that the lifting platform 3.10 connected to the first transmission chain 3.16 is lifted and lowered; when the purification unit 1.5 of the smoke hood 1.2 is disassembled and assembled, the lifting device for assembling and disassembling the purification electric field is placed under the smoke hood 1.2, and the lifting platform 3.10 is used to lift and lower the purification unit, thereby supporting the purification unit 1.5.

[0097] Buckles 3.8 are fixed on two upright posts 3.18, and quick locks 3.6 are arranged on the other two upright posts 3.18. When in use, the buckles 3.8 are buckled on the hanging rings 1.9 on the bottom surface of the purification box 1.1, and the quick locks 3.6 are buckled with the long strip buckle grooves 1.8 on the bottom surface of the purification box 1.1, so that the special disassembly and assembly tools can be quickly installed on the bottom surface of the smoke hood 1.2 and quickly positioned.

[0098] The quick lock 3.6 includes a connecting rod 3.69, a first connecting seat 3.66 and a second connecting seat 3.62, the first connecting seat 3.66 and the second connecting seat 3.62 are fixed to the side of the frame, the second connecting seat 3.62 is placed above the first connecting seat 3.66, the connecting rod 3.69 is vertically arranged and slidably connected to the first connecting seat 3.66 and the second connecting seat 3.62, the connecting rod 3.69 is provided with a first stopper 3.67 below the first connecting seat 3.66, and the connecting rod 3.69 A second limiting member 3.61 is provided above the second connecting seat 3.62; when in use, the latch is first buckled on the lifting ring 1.9 on the bottom surface of the purification box 1.1, thereby pushing the connecting rod 3.69 upward, and allowing the second limiting member 3.61 to pass through the long buckle groove 1.8, and then rotating the connecting rod 3.69 so that the second limiting member 3.61 is stuck on the long buckle groove 1.8, and the first limiting member 3.67 abuts against the bottom of the first connecting seat 3.66, thereby realizing the rapid fixation of the special disassembly and assembly tool.

[0099] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0100] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0101] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of the present invention, and all these changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A lifting device, characterized in that: The invention comprises a support (3.2) and two or more columns (3.18) fixed on the support (3.2); the lower end of the column (3.18) is rotatably connected to a first transmission wheel (3.15); the upper end of the column (3.18) is rotatably connected to a second transmission wheel (3.17); a first transmission chain (3.16) is connected between the first transmission wheel (3.15) and the second transmission wheel (3.17); a lifting platform (3.10) is fixed on the first transmission chain (3.16); the first transmission wheel (3.15) is rotatably connected to a driving assembly (3.1); the driving assembly (3.1) is fixed on the support (3.2); buckles (3.8) are fixed on two adjacent columns (3.18); and the other two columns (3.18) are provided with The quick lock (3.6) comprises a connecting rod (3.69), a first connecting seat (3.66) and a second connecting seat (3.62), the first connecting seat (3.66) and the second connecting seat (3.62) are fixed to the side of the column (3.18), the second connecting seat (3.62) is placed above the first connecting seat (3.66), the connecting rod (3.69) is vertically arranged and slidably connected to the first connecting seat (3.66) and the second connecting seat (3.62), the connecting rod (3.69) is provided with a first limiting member (3.67) below the first connecting seat (3.66), and the connecting rod (3.69) is provided with a second limiting member (3.61) above the second connecting seat (3.62); the first limiting member ( The distance between the first connection seat (3.67) and the second limit member (3.61) is greater than the distance between the first connection seat (3.66) and the second connection seat (3.62); the lower end of the connection rod (3.69) is fixedly connected to a handle (3.68), and also includes a fume hood type oil fume purifier, the fume hood type oil fume purifier includes a purification box (1.1) and a fume hood (1.2) fixed to the bottom surface of the purification box (1.1), a purification unit (1.5) is provided inside the purification box (1.1), and the purification box (1.1) is provided with a through hole (1.7) connected to the fume hood (1.2) below the purification unit (1.5), the purification unit (1.5) passes through the through hole (1.7) from bottom to top and is placed inside the purification box (1.1), and the purification box (1.1) A connecting piece (1.6) is connected to the bottom surface and at the edge of the through hole (1.7), the purification unit (1.5) is fixed on the connecting piece (1.6), the edge refers to the position of the bottom surface of the purification box (1.1) close to the through hole (1.7), the bottom surface of the purification box (1.1) is provided with a lifting ring (1.9) for lifting special tools, the side opposite to the lifting ring (1.9) is provided with a long strip buckle groove (1.8), the buckle ring (3.8) is buckled on the lifting ring (1.9) on the bottom surface of the purification box (1.1), the quick lock (3.6) is buckled with the long strip buckle groove (1.8) on the bottom surface of the purification box (1.1), the top surface of the lifting platform (3.10) is provided with a positioning piece (3.9), the positioning piece (3.9) is a conical positioning column, the purification unit (1.1) is provided with a lifting ring (1.9) on the bottom surface of the purification box (1.1), and the lifting platform (3.10) is provided with a positioning piece (3.9). The positioning piece (3.9) is a conical positioning column.The bottom surface of the lifting platform (3.10) is provided with a positioning groove matched with the positioning column, the first connecting block (3.4) and the second connecting block (3.5) are respectively fixedly connected at both ends of the first transmission chain (3.16), an adjusting screw (3.3) is provided between the first connecting block (3.4) and the second connecting block (3.5), the adjusting screw (3.3) passes through the first connecting block (3.4) and is threadedly connected to the second connecting block (3.5), the lifting platform (3.10) is connected to the second connecting block (3.5), and the first connecting block (3.4) and the second connecting block (3.5) are fixedly connected to each other. A pin (3.19) is provided between the connecting blocks (3.5), the pin (3.19) is fixed on the second connecting block (3.5), and the lower end of the pin (3.19) is slidably connected to the first connecting block (3.4), the connecting rod (3.69) is further provided with a third limiting member (3.64) between the first connecting seat (3.66) and the second connecting seat (3.62), and the connecting rod (3.69) is sleeved with an elastic member (3.65) between the third limiting member (3.64) and the first connecting seat (3.66).

2. The lifting device according to claim 1, characterized in that: There are four upright posts (3.18), which are respectively fixed on four corners of the bracket (3.2).

3. The lifting device according to claim 2, characterized in that: It also includes a first rotating shaft (3.14), two first transmission wheels (3.15) disposed on the same side of the lifting platform (3.10) are connected to the same first rotating shaft (3.14), the two first rotating shafts (3.14) are transmission-connected, and the driving assembly (3.1) is connected to one end of one of the first rotating shafts (3.14).

4. The lifting device according to claim 3, characterized in that: A third transmission wheel (3.13) is fixed in the middle of the two first rotating shafts (3.14), a second rotating shaft (3.11) is connected between the two third transmission wheels (3.13), and fourth transmission wheels (3.12) meshingly connected with the two third transmission wheels (3.13) are respectively fixed at both ends of the second rotating shaft (3.11).

5. The lifting device according to claim 1, characterized in that: The cross section of the column (3.18) is C-shaped, and the first transmission wheel (3.15), the second transmission wheel (3.17) and the transmission chain are all placed inside the column (3.18).

6. The lifting device according to claim 5, characterized in that: The first connecting block (3.4) and the second connecting block (3.5) are slidably connected to the column (3.18).

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