Sodium carbonate evaporative crystallization device convenient to clean

Abstract

The utility model discloses a sodium carbonate evaporative crystallization device convenient to clean, which belongs to the technical field of evaporative crystallization and comprises a tank body. The self-cleaning continuous filtering mechanism comprises a box body, a feeding hole, a filter screen and self-cleaning filter screen control units, the box body is fixedly mounted at the upper end of the tank body, and the two self-cleaning filter screen control units are symmetrically mounted on the front side and the rear side of the box body; the filter screen penetrates through the box body, and the two ends of the filter screen are connected with the two self-cleaning type filter screen control units respectively. A stirring mechanism used for stirring a solution is arranged in the tank body, and a residual material preventing and scraping mechanism capable of pushing crystals to the position above the discharging opening is installed in the tank body. By means of the mode, through rotation of the winding roller, the filter screen can be moved into or out of the box body through guiding cooperation of the first material guiding roller and the second material guiding roller; and the blocked filter screen recovers the filtering effect due to back washing of the spray head and can be repeatedly used.

Description

Technical Field

[0001] This utility model relates to the field of evaporation crystallization technology, specifically to a sodium carbonate evaporation crystallization device that is easy to clean. Background Technology

[0002] A sodium carbonate evaporation crystallization apparatus is a device used to precipitate crystalline sodium carbonate from a sodium carbonate solution through evaporation. This apparatus is widely used in various industries such as chemical and textile manufacturing.

[0003] Chinese patent CN221027797U discloses a low-temperature evaporation crystallization device. A first motor drives a rotating shaft, stirring rod, and mixing plate to rotate. The rotation of the stirring rod and mixing plate stirs the saline wastewater, ensuring uniform heating and crystallization. A second motor drives a threaded rod to rotate, which engages with a scraper, causing the scraper to move laterally along the inner wall of the treatment tank. This scrapes the crystals from the inner wall of the tank and discharges them through the outlet, facilitating cleaning of the crystals on the inner wall. However, this device still has the following problems.

[0004] 1. After prolonged use, the filter screen is prone to clogging, affecting the filtration effect and requiring replacement, thus reducing work efficiency.

[0005] 2. Although the scraper of this device can scrape off the crystals on the inner wall, if the sodium carbonate stock solution is evaporated and crystallized, the sodium carbonate crystals will adhere even more strongly, and crystals will still adhere to the scraper.

[0006] Based on this, the present invention designs a sodium carbonate evaporation and crystallization device that is easy to clean in order to solve the above problems. Utility Model Content

[0007] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a sodium carbonate evaporation and crystallization device that is easy to clean.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A sodium carbonate evaporation and crystallization apparatus that is easy to clean includes a tank; it also includes a stirring mechanism, a self-cleaning continuous filtration mechanism, and a residue-preventing scraping mechanism.

[0010] Multiple support legs are fixedly connected to the lower end of the tank, and discharge ports are opened on both the left and right sides of the lower end of the tank; an exhaust pipe is fixedly installed at the upper end of the tank.

[0011] The self-cleaning continuous filtration mechanism includes a housing, a feed inlet, a filter screen, and a self-cleaning filter screen control unit that cleans the filter screen. The housing is fixedly installed on the top of the tank, and the feed inlet is opened on the top of the housing. Two self-cleaning filter screen control units are symmetrically installed on the front and rear sides of the housing. The filter screen passes through the housing and its two ends are respectively connected to the two self-cleaning filter screen control units.

[0012] One end of the feed pipe is fixedly connected to the tank body, and the other end of the feed pipe is fixedly connected to the lower end of the box body; the tank body is equipped with a stirring mechanism for stirring the sodium carbonate stock solution during the evaporation and crystallization process, and the tank body is equipped with a scraping mechanism to push the sodium carbonate crystals to the top of the discharge port to prevent residual material from being scraped.

[0013] Furthermore, the self-cleaning filter control unit includes a roller, a first guide roller, a second guide roller, nozzles, a support frame, a waste discharge trough, and a fourth motor; the roller, the first guide roller, and the second guide roller are rotatably connected to the housing; the first guide roller is located above the second guide roller and the roller, and the second guide roller is located on the side of the roller away from the housing; the fourth motor is fixedly installed on the left side of the housing, and the output end of the fourth motor is fixedly connected to the roller; the support frame is fixedly installed on one side of the housing, and the support frame is located below the first guide roller and above the second guide roller. Multiple nozzles are fixedly installed at the lower end of the support frame, and the nozzles are evenly distributed at equal intervals along the length of the support frame. The nozzles are connected to an external water supply device; the waste discharge trough is fixedly installed to the housing and located below the roller.

[0014] Furthermore, the anti-residue scraping mechanism includes a scraping assembly for scraping sodium carbonate crystals off the inner wall of the tank and a striking assembly for vibrating the scraping assembly; the scraping assembly is installed inside the tank, and the striking assembly is installed on the left side of the tank.

[0015] Furthermore, the scraping assembly includes a reciprocating moving component, a first spring, a connecting block, and an annular scraper; the reciprocating moving component is installed inside the tank; a groove is provided on the moving end of the reciprocating moving component, one end of the connecting block is slidably installed in the groove, and the other end of the connecting block is fixedly connected to the annular scraper; the two ends of the connecting block are fixedly connected to the first spring, and the end of the first spring away from the connecting block is fixedly connected to the inner wall of the groove; the annular scraper is slidably installed inside the tank.

[0016] Furthermore, the striking assembly includes a drive assembly and a floating sliding assembly; the drive assembly and the floating sliding assembly are mounted on the left side of the tank, and the drive assembly is used to reciprocate to push the floating sliding assembly to strike the annular scraper and make it vibrate.

[0017] Furthermore, the drive assembly includes a support plate, a cam, and a third motor. The support plate is fixedly installed on the left end of the tank, the third motor is fixedly installed on the support plate, and the output end of the third motor is fixedly connected to the cam.

[0018] Furthermore, the floating sliding assembly includes a push rod, a second spring, and a disc. The push rod is slidably connected to the left end of the tank for striking the annular scraper. A disc for being struck by a cam is fixedly installed at the end of the push rod located on the outside of the tank. A second spring is fixedly installed between the disc and the tank, and the second spring is sleeved on the outside of the push rod.

[0019] Furthermore, the stirring mechanism includes a stirring rod, stirring blades, and a first motor; the first motor is fixedly installed at the right end of the tank, and the output end of the first motor is fixedly connected to the stirring rod; the stirring rod is rotatably installed inside the tank through bearings, and multiple stirring blades are fixedly arranged in a circumferential array at equal intervals on the stirring rod.

[0020] Compared with the prior art, the advantages of this utility model are as follows: 1. In this utility model, the rotation of the roller allows the filter screen to be moved into or out of the box through the guidance of the first guide roller and the second guide roller; the clogged filter screen can be restored to its filtering effect and reused due to the backwashing of the nozzle.

[0021] 2. In this utility model, the second motor drives the annular scraper to move back and forth to scrape off the sodium carbonate crystals precipitated on the inner wall of the tank, and then discharge them from the discharge port; the third motor drives the push rod to strike the annular scraper back and forth to shake off the sodium carbonate crystals adhering to the annular scraper, thereby reducing the residual sodium carbonate crystal content in the tank and thus mitigating the impact of crystal residue on the concentration of the raw liquid for the next evaporation. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a perspective view of a sodium carbonate evaporation and crystallization apparatus that is easy to clean according to the present invention;

[0024] Figure 2 This is a front view of a sodium carbonate evaporation and crystallization apparatus that is easy to clean, according to this utility model.

[0025] Figure 3 This is a cross-sectional perspective view of a sodium carbonate evaporation and crystallization apparatus that is easy to clean, according to this utility model. Figure 1 ;

[0026] Figure 4 This is a cross-sectional perspective view of a sodium carbonate evaporation and crystallization apparatus that is easy to clean, according to this utility model. Figure 2 ;

[0027] Figure 5 This is a three-dimensional structural view of the concealed tank of a sodium carbonate evaporation and crystallization device that is easy to clean, according to this utility model.

[0028] Figure 6 for Figure 3 Enlarged view of point A in the middle;

[0029] Figure 7 for Figure 4 Enlarged view of point B in the middle;

[0030] Figure 8 for Figure 5 Enlarged view of point C in the middle;

[0031] Figure 9 This is a structural diagram of the box.

[0032] The labels in the diagram represent:

[0033] 1. Tank body; 2. Support legs; 3. Discharge port; 4. Exhaust pipe; 5. Feed pipe; 6. Agitator; 61. Agitator rod; 62. Agitator blade; 63. First motor; 7. Self-cleaning continuous filtration mechanism; 71. Housing; 72. Feed inlet; 73. Filter screen; 74. Self-cleaning filter screen control unit; 741. Roller; 742. First guide roller; 743. Second guide roller; 744. Nozzle; 745. Support frame; 746. Discharge... Waste trough; 747, fourth motor; 8, anti-residue scraping mechanism; 81, scraping assembly; 811, reciprocating lead screw; 812, sliding rod; 813, slider; 814, groove; 815, first spring; 816, connecting block; 817, annular scraper; 818, second motor; 82, striking assembly; 821, support plate; 822, cam; 823, push rod; 824, second spring; 825, disc; 826, third motor. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0035] The terms "left," "right," "front," "back," "up," and "down" used in the following description refer to the orientation from the perspective of the front view.

[0036] Please see Figure 1 and Figure 3A sodium carbonate evaporation and crystallization device for easy cleaning includes a tank 1, with heating wires installed inside the side wall of the tank 1. Multiple support legs 2 are fixedly connected to the lower end of the tank 1. Discharge ports 3 are opened on both the left and right sides of the lower end of the tank 1, and valves are installed on each discharge port 3. An exhaust pipe 4 is fixedly installed at the upper end of the tank 1. A self-cleaning continuous filtration mechanism 7 includes a housing 71, an inlet 72, a filter screen 73, and a self-cleaning filter screen control unit 74. The housing 71 is fixedly installed at the upper end of the tank 1, and the inlet 72 is opened at the upper end of the housing 71. A self-cleaning filter control unit 74 is symmetrically installed on the front and rear sides of the housing 71; a filter 73 passes through the housing 71 and its two ends are respectively connected to the two self-cleaning filter control units 74; one end of the feed pipe 5 is fixedly connected to the tank 1, and the other end of the feed pipe 5 is fixedly connected to the lower end of the housing 71, and a valve is provided on the feed pipe 5; a stirring mechanism 6 for stirring the sodium carbonate stock solution during the evaporation and crystallization process is provided inside the tank 1, and a residual material scraping mechanism 8 for pushing sodium carbonate crystals to the top of the discharge port 3 is installed inside the tank 1;

[0037] In this invention, sodium carbonate stock solution enters the housing 71 through the inlet 72. After being filtered by the filter screen 73, the sodium carbonate stock solution enters the tank 1 through the feed pipe 5. The stirring mechanism 6 stirs the sodium carbonate stock solution, which is then heated by the heating wire and gradually evaporates. As heating progresses, sodium carbonate crystals gradually precipitate inside the tank 1, and steam is discharged from the exhaust pipe 4 until the sodium carbonate stock solution is completely evaporated. After the sodium carbonate crystals have completely precipitated, the anti-residue scraping mechanism 8 pushes the crystals precipitated in the tank 1 to the top of the discharge port 3 for discharge. As the usage time increases, the filtration effect of the filter screen 73 gradually decreases. The self-cleaning filter screen control unit 74 controls the retraction and expansion of the filter screen 73, so that the used filter screen 73 in the housing 71 moves to the outside of the housing 71, and the unused filter screen 73 moves to the inside of the housing 71. The self-cleaning filter screen control unit 74 also backwashes the filter screen 73 that has moved to the outside of the housing 71.

[0038] In this invention, the self-cleaning filter control unit 74 controls the opening and closing of the filter screen 73, so that the filter screen 73 can always maintain the filtration effect, and the used filter screen 73 is backwashed, so that the filter screen 73 can be reused repeatedly without manual replacement, thereby increasing efficiency; the anti-residue scraping mechanism 8 pushes the precipitated sodium carbonate crystals to the discharge port 3 to avoid the residue of sodium carbonate crystals on the inner wall of the tank 1.

[0039] Please see Figure 2 , Figure 3 and Figure 6The self-cleaning filter control unit 74 includes a roller 741, a first guide roller 742, a second guide roller 743, a nozzle 744, a support frame 745, a waste discharge trough 746, and a fourth motor 747. The roller 741, the first guide roller 742, and the second guide roller 743 are rotatably connected to the housing 71. The first guide roller 742 is located above the second guide roller 743 and the roller 741, and the second guide roller 743 is located on the side of the roller 741 away from the housing 71. A fourth motor 747 is fixedly installed on the left side of the housing 71. The output end of the fourth motor 747 is fixedly connected to the roller 741; the support frame 745 is fixedly installed on one side of the housing 71, and the support frame 745 is located below the first guide roller 742 and above the second guide roller 743. Multiple nozzles 744 are fixedly installed at the lower end of the support frame 745. The nozzles 744 are evenly distributed at equal intervals along the length of the support frame 745. The nozzles 744 are connected to external water supply equipment such as a water pump; the waste discharge trough 746 is fixedly installed to the housing 71 and is located below the roller 741.

[0040] In this utility model, when the filtration effect of the filter screen 73 inside the housing 71 decreases, the rollers 741 on both sides of the housing 71 start to rotate under the action of the fourth motor 747, and under the guidance of the first guide roller 742 and the second guide roller 743, they simultaneously perform winding and unwinding operations, so that the unused filter screen 73 replaces the filter screen 73 inside the housing 71, and the used filter screen 73 moves to the lower side of the nozzle 744, and the nozzle 744 backwashes the filter screen 73, and the wastewater after backwashing falls into the waste discharge trough 746;

[0041] In this invention, the rotation of the roller 741 allows the filter screen 73 to be moved into or out of the housing 71 by the guidance of the first guide roller 742 and the second guide roller 743; the clogged filter screen 73 can be restored to its filtering effect by the backwashing of the nozzle 744 and can be reused.

[0042] Please see Figure 1 , Figures 4-8 The anti-residue scraping mechanism 8 includes a scraping component 81 for scraping sodium carbonate crystals on the inner wall of the tank 1 and a striking component 82 for shaking the scraping component 81; the scraping component 81 is installed inside the tank 1 and the striking component 82 is installed on the left side of the tank 1.

[0043] The scraping assembly 81 includes a reciprocating screw 811, a sliding rod 812, a slider 813, a groove 814, a first spring 815, a connecting block 816, an annular scraper 817, and a second motor 818. Two sliders 813 are provided. The reciprocating screw 811 is rotatably mounted inside the tank 1 via bearings. The second motor 818 is fixedly mounted on the right end of the tank 1, and its output end is fixedly connected to the reciprocating screw 811. The sliding rod 812 is fixedly mounted inside the tank 1. The slider 813 and... A reciprocating lead screw 811 is threaded, and another slider 813 is slidably connected to a sliding rod 812. A groove 814 is provided on the slider 813, and one end of a connecting block 816 is slidably installed in the groove 814. The other end of the connecting block 816 is fixedly connected to an annular scraper 817. A first spring 815 is fixedly connected to both ends of the connecting block 816, and the end of the first spring 815 away from the connecting block 816 is fixedly connected to the inner wall of the groove 814. The annular scraper 817 is slidably installed in the tank body 1.

[0044] The striking assembly 82 includes a support plate 821, a cam 822, a push rod 823, a second spring 824, a disc 825, and a third motor 826. The support plate 821 is fixedly installed on the left end of the tank body 1, and the third motor 826 is fixedly installed on the support plate 821. The output end of the third motor 826 is fixedly connected to the cam 822. The push rod 823 is slidably connected to the left end of the tank body 1 for striking the annular scraper 817. A disc 825 for being struck by the cam 822 is fixedly installed at one end of the push rod 823 located outside the tank body 1. A second spring 824 is fixedly installed between the disc 825 and the tank body 1, and the second spring 824 is sleeved on the outside of the push rod 823.

[0045] In this invention, after the sodium carbonate stock solution is completely evaporated in tank 1 and the sodium carbonate crystals are completely precipitated, the output end of the second motor 818 drives the reciprocating screw 811 to rotate. The slider 813 on the reciprocating screw 811 and the sliding rod 812 moves accordingly, thereby driving the movement of the annular scraper 817 through the groove 814 and the connecting block 816. The annular scraper 817 pushes the sodium carbonate crystals precipitated in tank 1 to the top of the discharge port 3, thereby discharging the sodium carbonate crystals. When the annular scraper 817 moves to... When the third motor 826 installed on the support plate 821 starts working, the output end of the third motor 826 drives the cam 822 to rotate. The cam 822 strikes the disc 825, and with the cooperation of the second spring 824, the push rod 823 moves back and forth. The right end of the push rod 823 strikes the annular scraper 817, and with the cooperation of the connecting block 816 and the first spring 815, the annular scraper 817 vibrates, thereby shaking off the sodium carbonate crystals adhering to the annular scraper 817.

[0046] In this invention, the second motor 818 drives the annular scraper 817 to move back and forth to scrape off the sodium carbonate crystals precipitated on the inner wall of the tank 1, and then discharge them from the discharge port 3; the third motor 826 drives the push rod 823 to strike the annular scraper 817 back and forth to shake off the sodium carbonate crystals adhering to the annular scraper 817, thereby reducing the residual sodium carbonate crystal content in the tank 1 and thus mitigating the impact of crystal residue on the concentration of the original crystal solution for the next evaporation.

[0047] Please see Figure 3 and Figure 4 The stirring mechanism 6 includes a stirring rod 61, stirring blades 62 and a first motor 63; the first motor 63 is fixedly installed at the right end of the tank body 1, and the output end of the first motor 63 is fixedly connected to the stirring rod 61; the stirring rod 61 is rotatably installed inside the tank body 1 through a bearing, and multiple stirring blades 62 are fixedly arranged on the stirring rod 61 in a circumferential array with equal spacing.

[0048] In this invention, sodium carbonate stock solution enters the tank 1, and the stirring mechanism 6 starts to work; the output end of the first motor 63 drives the stirring rod 61 to rotate, and the multiple stirring blades 62 set on the stirring rod 61 also rotate accordingly, stirring the sodium carbonate stock solution inside the tank 1.

[0049] In this invention, the rotation of the stirring rod 61 and the stirring blade 62 is controlled by the output end of the first motor 63, so that the sodium carbonate stock solution in the tank 1 is stirred and heated evenly.

[0050] Please see Figure 9 Furthermore, a shell is fixedly installed on the outside of the box 71 to prevent leakage of the original liquid.

[0051] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A sodium carbonate evaporation and crystallization apparatus that is easy to clean, comprising a tank (1), characterized in that: It also includes a stirring mechanism (6), a self-cleaning continuous filtration mechanism (7) and a material scraping mechanism (8). Multiple support legs (2) are fixedly connected to the lower end of the tank (1). Discharge ports (3) are opened on both the left and right sides of the lower end of the tank (1). An exhaust pipe (4) is fixedly installed on the upper end of the tank (1). The self-cleaning continuous filtration mechanism (7) includes a housing (71), a feed inlet (72), a filter screen (73), and a self-cleaning filter screen control unit (74) that has the function of cleaning the filter screen. The housing (71) is fixedly installed on the upper end of the tank (1). The feed inlet (72) is opened on the upper end of the housing (71). Two self-cleaning filter screen control units (74) are symmetrically installed on the front and rear sides of the housing (71). The filter screen (73) passes through the housing (71) and the two ends of the filter screen (73) are respectively connected to the two self-cleaning filter screen control units (74). One end of the feed pipe (5) is fixedly connected to the tank body (1), and the other end of the feed pipe (5) is fixedly connected to the lower end of the box body (71); the tank body (1) is equipped with a stirring mechanism (6) for stirring the sodium carbonate raw solution during the evaporation and crystallization process, and the tank body (1) is equipped with a scraping mechanism (8) for pushing sodium carbonate crystals to the top of the discharge port (3) to prevent residual material scraping.

2. The sodium carbonate evaporation and crystallization apparatus for easy cleaning according to claim 1, characterized in that, The self-cleaning filter control unit (74) includes a roller (741), a first guide roller (742), a second guide roller (743), a nozzle (744), a support frame (745), a waste discharge trough (746), and a fourth motor (747); the roller (741), the first guide roller (742), and the second guide roller (743) are rotatably connected to the housing (71); the first guide roller (742) is located above the second guide roller (743) and the roller (741), and the second guide roller (743) is located on the side of the roller (741) away from the housing (71); the left side of the housing (71) is fixedly installed. There is a fourth motor (747), the output end of which is fixedly connected to the roller (741); a support frame (745) is fixedly installed on one side of the box (71), the support frame (745) is located below the first guide roller (742) and above the second guide roller (743), and multiple nozzles (744) are fixedly installed at the lower end of the support frame (745). The nozzles (744) are evenly distributed at equal intervals along the length of the support frame (745), and the nozzles (744) are connected to an external water supply device; the waste discharge trough (746) is fixedly installed to the box (71) and located below the roller (741).

3. The sodium carbonate evaporation and crystallization apparatus according to claim 1, characterized in that, The anti-residue scraping mechanism (8) includes a scraping assembly (81) for scraping sodium carbonate crystals on the inner wall of the tank (1) and a striking assembly (82) for shaking the scraping assembly (81); the scraping assembly (81) is installed inside the tank (1) and the striking assembly (82) is installed on the left side of the tank (1).

4. The sodium carbonate evaporation and crystallization apparatus according to claim 3, characterized in that, The scraping assembly (81) includes a reciprocating moving assembly, a first spring (815), a connecting block (816), and an annular scraper (817); the reciprocating moving assembly is installed inside the tank (1); a groove (814) is provided on the moving end of the reciprocating moving assembly, one end of the connecting block (816) is limited and slidably installed in the groove (814), and the other end of the connecting block (816) is fixedly connected to the annular scraper (817); the two ends of the connecting block (816) are fixedly connected to the first spring (815), and the end of the first spring (815) away from the connecting block (816) is fixedly connected to the inner wall of the groove (814); the annular scraper (817) is fitted and slidably installed inside the tank (1).

5. The sodium carbonate evaporation and crystallization apparatus according to claim 4, characterized in that, The striking assembly (82) includes a drive assembly and a floating sliding assembly; the drive assembly and the floating sliding assembly are mounted on the left side of the tank (1), and the drive assembly is used to reciprocate to push the floating sliding assembly to strike the annular scraper (817) to make it vibrate.

6. The sodium carbonate evaporation and crystallization apparatus according to claim 5, characterized in that, The drive assembly includes a support plate (821), a cam (822), and a third motor (826). The support plate (821) is fixedly installed on the left end of the tank (1), and the third motor (826) is fixedly installed on the support plate (821). The output end of the third motor (826) is fixedly connected to the cam (822).

7. The sodium carbonate evaporation and crystallization apparatus according to claim 6, characterized in that, The floating sliding assembly includes a push rod (823), a second spring (824), and a disc (825). The push rod (823) is slidably connected to the left end of the tank (1) for striking the annular scraper (817). The end of the push rod (823) located outside the tank (1) is fixedly mounted with a disc (825) for being struck by a cam (822). The second spring (824) is fixedly mounted between the disc (825) and the tank (1), and the second spring (824) is sleeved on the outside of the push rod (823).

8. The sodium carbonate evaporation and crystallization apparatus according to claim 1, characterized in that, The stirring mechanism (6) includes a stirring rod (61), stirring blades (62) and a first motor (63); the first motor (63) is fixedly installed on the right end of the tank (1), and the output end of the first motor (63) is fixedly connected to the stirring rod (61); the stirring rod (61) is rotatably installed inside the tank (1) through a bearing, and multiple stirring blades (62) are fixedly arranged on the stirring rod (61) in a circumferential array with equal spacing.

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