A particle dust removal and purification device for textile printing and dyeing process

Abstract

This application relates to the technical field of air pollution purification devices, and discloses a particulate dust removal and purification device for textile printing and dyeing processes. The device includes a cylinder, a heat exchange component, a filter component, a cleaning component, and a circulation component. A water storage tank is formed at the bottom of the cylinder, and the cylinder has an air inlet and an air outlet. The heat exchange component is located inside the cylinder above the air inlet to exchange heat with the exhaust gas entering the cylinder through the air inlet and to heat the spray water stored in the water storage tank. The filter component is located inside the cylinder above the heat exchange component. The cleaning component is used to spray and clean the filter component. The circulation component supplies the spray water from the water storage tank to the cleaning component. The heat exchange component can exchange heat with the printing and dyeing exhaust gas entering the cylinder and transfer the heat to the spray water in the water storage tank, thus warming the spray water and improving its subsequent cleaning effect on the filter component. This ensures that the heat in the printing and dyeing exhaust gas is fully utilized.

Description

Technical Field

[0001] This application relates to the field of air pollution purification devices, and more specifically, to a particulate dust removal and purification device used in textile printing and dyeing processes. Background Technology

[0002] Textile printing and dyeing is an important part of the textile industry. It refers to the process of dyeing, printing and finishing textiles. The purpose is to give textiles color, patterns or special functions. It is a processing method and also a general term for pretreatment, dyeing, printing, finishing, washing and so on.

[0003] Currently, in the textile printing and dyeing production process, fiber processing, fabric treatment, and dye spraying often generate a large amount of particulate pollutants. For example, in the heat setting process of the finishing stage, high-temperature printing and dyeing waste gas of 120-180℃ is easily generated. This type of printing and dyeing waste gas contains textile silicone oil, mineral oil, resin, and softener volatilization to form oil mist particles, which are superimposed with impurities such as fiber lint and residual dye solid particles. Therefore, it is necessary to purify the gaseous pollutants in order to discharge the waste gas.

[0004] Traditionally, the purification of this type of dyeing and printing waste gas involves pre-filtering impurities such as fiber lint and particles using a filter screen, followed by sequentially passing the waste gas into purification equipment such as a spray scrubbing tower and a high-voltage electrostatic precipitator to achieve purification. However, in actual use, the temperature of the dyeing and printing waste gas is relatively high. Directly entering the spray scrubbing tower for washing and cooling results in the heat in the waste gas not being fully utilized, easily leading to heat waste. Therefore, improvements are needed. Summary of the Invention

[0005] The purpose of this application is to provide a particulate dust removal and purification device for textile printing and dyeing processes, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: A particulate dust removal and purification device for textile printing and dyeing processes, comprising: A cylindrical body, the bottom of which forms a water storage tank, and the cylindrical body has an air inlet located above the water storage tank and an air outlet located at the top; A heat exchange component is disposed in the cylinder above the air inlet to exchange heat with the exhaust gas entering the cylinder through the air inlet and to heat the spray water stored in the water storage tank. A filter assembly is disposed in the cylinder above the heat exchange assembly and is used to filter exhaust gas. A cleaning component, which is used to spray and clean the filter component; A circulation component is used to supply spray water from the water storage tank to the cleaning component.

[0007] Furthermore, the heat exchange assembly includes multiple fins arranged in parallel along the air inlet direction. The two ends of the fins form mounting rings, which are used for installing the heat exchange assembly inside the cylinder. Heat-conducting fins connected to the fins and extending into the water storage tank are provided on both sides of the fins.

[0008] Furthermore, the filter assembly includes multiple filter elements arranged sequentially from top to bottom, and the filter elements are generally truncated cone-shaped for multi-stage filtration of exhaust gas.

[0009] Furthermore, the cleaning component includes: A spray element is disposed above a corresponding filter element and is used to spray the filter element. A brush / sweeping component is disposed below the corresponding filter element and is used to brush / sweep the filter element. A first driving member is provided, which extends through multiple filter elements, and is used to drive the spraying element and the brushing element to rotate circumferentially along the corresponding filter element.

[0010] Furthermore, the loop component includes: A water supply channel is provided on the first driving component and is connected to the corresponding spray component; The water supply pipe has its bottom end connected to a water storage tank via a circulation pump, and its top end connected to a water supply channel via a rotary joint.

[0011] Furthermore, a flow guide is provided inside the cylinder between the filter assembly and the heat exchange assembly, the flow guide being used to discharge the wastewater generated by the cleaning assembly.

[0012] Furthermore, the water storage tank is equipped with a stirring component, which is used to disperse the exhaust gas entering through the air inlet and to stir the water in the water storage tank.

[0013] Furthermore, the agitation assembly includes: A stirring shaft is vertically and rotatably disposed in the water storage tank and connected to the first driving component; A dispersing component is mounted on a stirring shaft opposite to the air inlet. The rotation of the stirring shaft drives the dispersing component to disperse the exhaust gas. An agitator is provided on an agitator shaft inside a water storage tank. The rotation of the agitator shaft drives the agitator to stir the water in the water storage tank.

[0014] Furthermore, a second driving member is provided on the agitation shaft, which is used to drive the agitator to reciprocate up and down along the agitation shaft.

[0015] Further, the second driving element includes: A drive ring, wherein the drive ring is inclinedly disposed at the bottom of the agitator shaft; A fixed cylinder, which covers the drive ring and is fixed to the bottom end of the cylinder body; A lifting ring is axially positioned inside a fixed cylinder and rotatably connected to an agitator. The lifting ring has opposing levers inside, and the outer side of the drive ring is slidably engaged between the levers. The agitator shaft drives the drive ring to rotate, thereby driving the levers to move the lifting ring up and down within the fixed cylinder.

[0016] Compared with the prior art, the beneficial effects of this application are: 1. In this application, by setting up a heat exchange component, it is able to exchange heat with the dyeing and printing waste gas entering the cylinder and transfer the heat to the spray water in the water storage tank, so that the spray water becomes warm water, thereby improving its subsequent cleaning effect on the filter component, thus making full use of the heat in the dyeing and printing waste gas.

[0017] 2. In this application, the agitation component is configured to disperse the dyeing and printing waste gas, so as to prevent the waste gas from concentrating through the heat exchange component. At the same time, it can agitate the spray water in the water storage tank to prepare cleaning solution, thereby improving the cleaning effect of the cleaning component on the filter component. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a particulate dust removal and purification device used in the textile printing and dyeing process according to this application.

[0019] Figure 2 This is a cross-sectional schematic diagram of a particulate dust removal and purification device used in the textile printing and dyeing process according to this application.

[0020] Figure 3 This is a schematic diagram of the structure of the heat exchange component, filter component and circulation component in this application.

[0021] Figure 4 This is a schematic diagram of the heat exchange component in this application.

[0022] Figure 5 This is a schematic diagram of the structure of the filtering component in this application.

[0023] Figure 6 for Figure 2 An enlarged schematic diagram of part A in the middle.

[0024] Figure 7 This is a schematic diagram of the agitation component in this application. Figure 8 This is a partial structural diagram of the agitation component in this application.

[0025] The meanings of the labels in the diagram are as follows: 100. Cylinder body; 101. Air inlet; 102. Air outlet; 103. Water inlet pipe; 104. Water outlet pipe; 110. Water supply pipe; 111. Circulation pump; 201. Water storage tank; 210. Heat exchange assembly; 220. Filter assembly; 230. Water supply channel; 231. Rotary joint; 240. Flow guide; 241. Bottom cover; 242. Top cover; 250. Agitator shaft; 300. Motor; 310. Filter element; 410. Fins; 411. Mounting ring; 412. Heat-conducting plate; 500. Rotating shaft; 510. Spraying component; 520. Brushing component; 610. Drive ring; 620. Fixed cylinder; 630. Lifting ring; 631. Lever; 632. Connecting rod; 633. Sliding ring; 710. Disperse the board; 720. Stir the fan blades; 801, Limiting groove; 811, Slider. Detailed Implementation

[0026] To further understand the content of this application, a detailed description of this application will be provided in conjunction with the accompanying drawings and embodiments. It should be understood that the embodiments are merely illustrative and not intended to limit the scope of this application.

[0027] The following is in conjunction with the appendix Figures 1-8 This embodiment will be described in further detail.

[0028] Combined with appendix Figures 1-8 This embodiment describes a particulate dust removal and purification device for textile printing and dyeing processes. It is used to pre-filter and cool the printing and dyeing waste gas, which can effectively reduce the content of impurities such as fiber lint and oil mist particles in the printing and dyeing waste gas, thereby reducing the blockage of subsequent purification equipment by the printing and dyeing waste gas and reducing the processing load of the subsequent purification equipment.

[0029] This embodiment provides a particulate dust removal and purification device for textile printing and dyeing processes, comprising a cylinder 100, a heat exchange assembly 210, and a filter assembly 220; wherein, as... Figure 1 and Figure 2As shown, the cylinder 100 is vertically arranged and has a cavity inside. The bottom of the cavity forms a water storage tank 201 for storing spray water. In actual use, the outer wall of the cylinder 100 is provided with an inlet pipe 103 and an outlet pipe 104 that connect to the water storage tank 201. At the same time, the side wall of the cylinder 100 is provided with an air inlet 101, which is located above the water storage tank 201. The top of the cylinder 100 is provided with an air outlet 102. In actual use, the air inlet 101 is connected to the existing gas collection equipment through a pipe, and the air outlet 102 is connected to the subsequent purification equipment through a pipe. Thus, the waste gas generated in the textile printing and dyeing process enters the cylinder 100 through the air inlet 101, rises in the cylinder 100, and is discharged through the air outlet 102, and then enters the subsequent purification equipment.

[0030] In this embodiment, the heat exchange component 210 is disposed inside the cylinder 100 above the air inlet 101 to exchange heat with the exhaust gas entering the cylinder 100 through the air inlet 101 and to heat the spray water stored in the water storage tank 201, so as to reduce the temperature of the dyeing exhaust gas so that it can enter the subsequent purification equipment. At the same time, the heat exchange component 210 can transfer the heat in the dyeing exhaust gas to the spray water in the water storage tank 201, so that the heat in the dyeing exhaust gas can be utilized and warm water can be generated in the water storage tank 201, so that the cleaning solution can be prepared by adding agents later. The filter assembly 220 is located inside the cylinder 100 above the heat exchange assembly 210 to filter the rising dyeing and printing exhaust gas inside the cylinder 100, thereby reducing the content of impurities such as fiber lint and oil mist particles in the dyeing and printing exhaust gas, thus pre-treating the dyeing and printing exhaust gas.

[0031] Specifically, such as Figure 3 and Figure 4 As shown, in this embodiment, the heat exchange assembly 210 includes multiple fins 410 arranged in parallel along the air inlet 101. There are gaps between adjacent fins 410 to allow the flow of dyeing and printing waste gas, enabling it to contact and exchange heat with the fins 410. Each fin 410 has a mounting ring 411 at both ends. The mounting ring 411 is annular and fits the sidewall of the cavity. In actual use, the mounting ring 411 is fixed to the cavity with screws, thus enabling the heat exchange assembly 210 to be installed inside the cylinder 100. In actual use, to better transfer heat to the spray water in the water storage tank 201, heat-conducting plates 412 are provided on both sides of the fins 410, connected to the fins 410 and extending into the water storage tank 201.

[0032] It should be noted that, in order to ensure the heat exchange effect of the heat exchange component 210, both the fins 410 and the heat-conducting plates 412 are made of stainless steel.

[0033] In this embodiment, as Figure 2 and Figure 3 As shown, the filter assembly 220 includes multiple filter elements 310 arranged sequentially from top to bottom. Each filter element 310 is frustum-shaped and is used for multi-stage filtration of exhaust gas. Specifically, each filter element 310 includes a frustum-shaped filter plate, with the diameter of the filter plate gradually increasing from top to bottom. A filter screen, which is a metal filter screen, is embedded on the frustum-shaped side of the filter plate. At the same time, the mesh diameter of the multiple filter screens gradually increases from top to bottom. Thus, the dyeing exhaust gas rising inside the cylinder 100 is filtered in multiple stages, thereby effectively reducing the content of impurities such as fiber lint and oil mist particles in the dyeing exhaust gas.

[0034] In actual use, impurities such as fiber lint and oil mist particles adhere to the filter screen. As the usage time increases, these impurities will clog the filter screen. Therefore, in order to ensure the filtration effect of the filter screen on the dyeing and printing waste gas, the filter screen needs to be cleaned. In this embodiment, a cleaning component is provided at the filter component 220. The cleaning component is used to spray and clean the filter component 220, thereby better avoiding filter screen clogging and ensuring the continuous operation of the device.

[0035] Specifically, such as Figure 5 As shown, the cleaning assembly includes a spray component 510, a brush component 520, and a first driving component. The spray component 510 is positioned above the corresponding filter component 310 to spray water onto it. The brush component 520 is positioned below the corresponding filter component 310 to brush it. By spraying water above the filter screen with the spray component 510 and brushing below the filter screen with the brush component 520, the filter screen is effectively cleaned through their combined action. To ensure that the spray component 510 and brush component 520 can thoroughly clean the filter screen, the first driving component extends through multiple filter components 310, driving the spray component 510 and brush component 520 to rotate circumferentially around the corresponding filter component 310, thus enabling them to thoroughly clean the filter component 310.

[0036] In actual use, the first driving component includes a vertically rotatable rotating shaft 500 that passes through the center of the filter element 310. The spraying component 510 includes an inclined upper mounting plate with one end connected to the rotating shaft 500. A spray pipe is provided on the lower side of the upper mounting plate, and spray heads are arranged on the spray pipe. Thus, the spray heads spray water to spray the filter screen. The brushing component 520 includes an inclined lower mounting plate with one end connected to the rotating shaft 500. A brush made of nylon material is provided on the upper side of the lower mounting plate. Thus, the rotation of the rotating shaft 500 can drive the spraying component 510 and the brushing component 520 to rotate, so that both can thoroughly clean the filter screen.

[0037] Specifically, in order to enable the spraying component 510 to spray through the spraying head, in this embodiment, a circulation component is provided outside the cylinder 100. The circulation component is used to supply the spraying water in the water storage tank 201 to the spraying component 510.

[0038] In this embodiment, the circulation component includes a water supply channel 230 and a water supply pipe 110; wherein, the water supply channel 230 is disposed on the first driving member and is connected to the corresponding spray member 510; specifically, as shown... Figure 2 As shown, a cavity is provided inside the rotating shaft 500 that is connected to the corresponding spray pipe, and the cavity forms a water supply channel 230; the bottom end of the water supply pipe 110 is connected to the water storage tank 201 through the circulation pump 111, and the top end is connected to the water supply channel 230 through the rotary joint 231. Therefore, the circulation pump 111 can pump the spray water in the water storage tank 201 into the spray pipe, so as to realize the spray component 510 spraying and rinsing the filter screen.

[0039] In actual use, in order to prevent the wastewater after spraying by the spraying component 510 from flowing back into the water storage tank 201, in this embodiment, a guide component 240 is provided inside the cylinder 100 between the filter component 220 and the heat exchange component 210. The guide component 240 is used to drain the wastewater generated by the cleaning component.

[0040] Specifically, such as Figure 2 As shown, the guide component 240 includes a bottom cover 241 and a top cover 242. The bottom cover 241 is frustum-shaped, and the top cover 242 is also frustum-shaped. The two are coaxially arranged and fixed in the cavity. Specifically, the bottom side of the bottom cover 241 is connected to the side wall of the cavity, and the top side of the top cover 242 is connected to the side wall of the cavity through a bracket. At the same time, there is a gap between the two, which forms an air passage. That is, the dyeing waste gas entering the cylinder 100 can flow through the air passage to the cavity above. Meanwhile, the wastewater generated by the spraying flows along the side wall of the top cover 242 and the side wall of the bottom cover 241 to the bottom side of the bottom cover 241, thereby preventing the wastewater from flowing back into the water storage tank 201. In actual use, a drain pipe (not shown in the figure) is provided on the side wall of the cylinder 100 for the discharge of wastewater collected to the outside of the bottom cover 241.

[0041] In this embodiment, a stirring component is installed in the water storage tank 201 during actual use. The stirring component is used to disperse the dyeing and printing waste gas entering through the air inlet 101 and to stir the water in the water storage tank 201. By dispersing the dyeing and printing waste gas, it is better to prevent the dyeing and printing waste gas from passing through the gaps between the fins 410 in a concentrated manner, resulting in no dyeing and printing waste gas flowing through the gaps between the fins 410 near the edge, which makes the heat exchange effect between the heat exchange component 210 and the dyeing and printing waste gas poor. At the same time, since oil mist particles and fiber lint will form oil stains when they adhere to the filter screen, it is necessary to add a chemical agent (such as sodium hydroxide powder) to the water storage tank 201 during actual use to make a cleaning solution, so that the spray component 510 sprays the cleaning solution onto the filter screen to improve the spray cleaning effect on the oil stains on the filter screen.

[0042] In this embodiment, due to the setting of the heat exchange component 210, warm water is generated in the water storage tank 201, which allows the agent to dissolve better in the spray water in the water storage tank 201. At the same time, the agitation component can also agitate the water in the water storage tank 201, making the agent dissolve better, so as to prepare the cleaning solution.

[0043] In this embodiment, the agitation assembly includes an agitator shaft 250, a dispersing component, and an agitator. The agitator shaft 250 is vertically and rotatably disposed within the water storage tank 201 and connected to the bottom end of the rotating shaft 500, so that the rotation of the agitator shaft 250 can drive the rotating shaft 500 to rotate. In actual use, a motor 300 for driving the agitator shaft 250 to rotate is provided at the bottom of the cylinder 100. At the same time, in order to install the motor 300, a support leg is provided at the bottom of the cylinder 100.

[0044] The dispersing component is mounted on the agitator 250 opposite to the air inlet 101. The rotation of the agitator 250 drives the dispersing component to disperse the waste gas. Specifically, the dispersing component includes several dispersing plates 710 arranged on the agitator 250. When the agitator 250 rotates, it can drive the dispersing plates 710 to rotate, thereby dispersing the dyeing waste gas entering from the air inlet 101 to prevent the dyeing waste gas from flowing upward in a concentrated manner.

[0045] The agitator is mounted on the agitator shaft 250 inside the water storage tank 201. The rotation of the agitator shaft 250 drives the agitator to stir the water in the water storage tank 201. Specifically, the agitator includes an agitator blade 720 sleeved on the agitator shaft 250. That is, the rotation of the agitator shaft 250 drives the agitator blade 720 to rotate in order to stir the spray water in the water storage tank 201.

[0046] In this embodiment, a second driving member is provided on the stirring shaft 250. The second driving member is used to drive the stirring member to reciprocate up and down along the stirring shaft 250, thereby increasing the stirring range of the stirring member and improving the stirring effect.

[0047] Specifically, the second driving component includes a driving ring 610, a fixed cylinder 620, and a lifting ring 630; wherein, as Figure 7 and Figure 8 As shown, the drive ring 610 is inclinedly disposed at the bottom of the agitator shaft 250; the fixed cylinder 620 covers the drive ring 610 and is fixed to the bottom end of the cylinder body 100; specifically, the fixed cylinder 620 has a structure with two open ends, and its lower end opening extends outward to form a flange, which is fixedly installed on the bottom of the cylinder body 100 by screws. The lifting ring 630 is axially disposed within the fixed cylinder 620 and rotatably connected to the agitator. Specifically, a groove is provided on the inner wall of the fixed cylinder 620 along its extension direction, and a slider 811 is provided on the outer wall of the lifting ring 630, which slides within the groove. This ensures that the lifting ring 630 can only slide up and down within the fixed cylinder 620 and cannot rotate circumferentially. The bottom of the agitator blade 720 has an annular groove along its circumference, and the upper end of the lifting ring 630 has opposing connecting rods 632. A sliding ring 633 is provided between the connecting rods 632, sliding within the annular groove. This achieves a rotatable connection between the lifting ring 630 and the agitator blade 720, while simultaneously... A limiting groove 801 is provided on the outer wall of the moving shaft 250 along its axial direction. A limiting block is provided on the stirring blade 720 that slides within the limiting groove 801. This enables the stirring shaft 250 to rotate, driving the stirring blade 720 to rotate. At the same time, the stirring blade 720 can reciprocate up and down along the stirring shaft 250. The lifting ring 630 is provided with a corresponding lever 631. The outer side of the drive ring 610 slides between the levers 631. Thus, the stirring shaft 250 drives the drive ring 610 to rotate, which in turn drives the lever 631 to move the lifting ring 630 up and down within the fixed cylinder 620. This enables the stirring blade 720 to reciprocate up and down along the stirring shaft 250, thereby improving its stirring effect.

[0048] In summary, the above description is only a preferred embodiment of this application. All equivalent changes and modifications made within the scope of this application should be covered by this application.

Claims

1. A particle dedusting and purifying device for use in a textile printing and dyeing process, characterized in that, include: A cylindrical body (100) has a water storage tank (201) formed at the bottom of the cylindrical body (100), and the cylindrical body (100) has an air inlet (101) located above the water storage tank (201) and an air outlet (102) located at the top. Heat exchange assembly (210), which is disposed in the cylinder (100) above the air inlet (101) to exchange heat with the exhaust gas entering the cylinder (100) from the air inlet (101) and to heat the spray water stored in the water storage tank (201); A filter assembly (220) is disposed inside the cylinder (100) above the heat exchange assembly (210) and is used to filter exhaust gas. A cleaning component for spraying and cleaning the filter component (220); A circulation component is used to supply spray water from the water storage tank (201) to the cleaning component.

2. The particulate dust removal and purification device for textile printing and dyeing processes according to claim 1, characterized in that, The heat exchange assembly (210) includes a plurality of fins (410) arranged in parallel along the air intake direction of the air inlet (101). The two ends of the fins (410) form mounting rings (411), which are used for installing the heat exchange assembly (210) inside the cylinder (100). Heat-conducting plates (412) connected to the fins (410) and extending into the water storage tank (201) are provided on both sides of the fins (410).

3. A particle dust cleaning device for use in textile printing and dyeing processes as claimed in claim 1, wherein, The filter assembly (220) includes a plurality of filter elements (310) arranged sequentially from top to bottom. The filter elements (310) are generally truncated cone-shaped and are used for multi-stage filtration of exhaust gas.

4. A particle dust cleaning device for use in textile printing and dyeing processes according to claim 3, characterized in that, The cleaning component includes: A spray element (510) is disposed above a corresponding filter element (310) and is used to spray the filter element (310); A brush (520) is disposed below the corresponding filter (310) and is used to brush the filter (310). A first driving member is disposed through multiple filter elements (310) to drive the spray element (510) and the brush element (520) to rotate circumferentially along the corresponding filter element (310).

5. A particle dust cleaning device for use in textile printing and dyeing processes according to claim 4, characterized in that, The loop component includes: Water supply channel (230), the water supply channel (230) is disposed on the first driving member and is connected to the corresponding spray member (510); Water supply pipe (110), the bottom end of which is connected to water storage tank (201) via circulation pump (111), and the top end of which is connected to water supply channel (230) via rotary joint (231).

6. A particle dust cleaning device for use in textile printing and dyeing processes as claimed in claim 4, wherein, The cylinder (100) is provided with a flow guide (240) located between the filter assembly (220) and the heat exchange assembly (210), and the flow guide (240) is used to discharge the wastewater generated by the cleaning assembly.

7. A particle dust cleaning device for use in textile printing and dyeing processes as claimed in claim 4, wherein The water storage tank (201) is equipped with a stirring component, which is used to disperse the exhaust gas entering through the air inlet (101) and to stir the water in the water storage tank (201).

8. A particle dedusting and cleaning device for use in textile printing and dyeing processes according to claim 7, characterized in that, The agitation component includes: A stirring shaft (250) is vertically and rotatably disposed in a water storage tank (201) and connected to a first driving member; A dispersing component is disposed on an agitator (250) opposite to the air inlet (101). The agitator (250) rotates to drive the dispersing component to disperse the exhaust gas. A stirring element is provided on a stirring shaft (250) inside a water storage tank (201). The stirring shaft (250) rotates to drive the stirring element to stir the water in the water storage tank (201).

9. A particulate dust removal and purification device for textile printing and dyeing processes according to claim 8, characterized in that, A second driving member is provided on the stirring shaft (250), which is used to drive the stirring member to reciprocate up and down along the stirring shaft (250).

10. A particle dedusting and cleaning device for use in textile printing and dyeing processes according to claim 9, characterized in that, The second driving element includes: A drive ring (610) is inclinedly disposed at the bottom of the agitator shaft (250); A fixed cylinder (620) is placed over the drive ring (610) and fixed to the bottom end of the cylinder body (100); A lifting ring (630) is axially arranged inside a fixed cylinder (620) and rotatably connected to a stirring component. The lifting ring (630) has a corresponding lever (631) inside. The outer side of the driving ring (610) is slidably engaged between the levers (631). The stirring shaft (250) drives the driving ring (610) to rotate in order to drive the levers (631) to move the lifting ring (630) up and down inside the fixed cylinder (620).

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