Small-sized solid-liquid mixer

Abstract

The utility model discloses a small-sized solid-liquid mixer which comprises a bottom plate, an eccentric wheel, a bearing and a stirring tank, a vertical lifting mechanism is arranged on the bottom plate, one ends of two horizontal supports are installed on the vertical lifting mechanism, the other ends of the two horizontal supports are fixedly connected with a horizontal fixing plate, and a horizontal sliding plate is horizontally connected to the horizontal fixing plate in a sliding mode. The stirring tank is arranged on the bottom plate, the rotating groove is formed in the horizontal fixing plate, the stirring shaft is fixedly connected with an eccentric wheel, the horizontal fixing plate is rotationally connected with a bearing, and the bearing is in rolling connection with the eccentric wheel; a reset assembly is further arranged on the horizontal sliding plate and pushes the horizontal sliding plate to reset. The stirring shaft disclosed by the utility model can transversely move while stirring, so that long-time single-axis stirring is avoided, solute precipitation at the bottom of the stirring shaft is avoided, and the effects of fully stirring and accelerating dissolution are achieved.

Description

Technical Field

[0001] The utility model relates to the field of mixers, in particular to a small solid-liquid mixer. Background Art

[0002] Mixers are also used in some occasions with smaller mixing needs, such as raw material mixing in small factories, some companies and university research and development laboratories, etc. There are not many raw materials for mixing in these occasions, but with the development of new products, more and more substances need to be mixed with each other. In particular, the dissolution between solids and liquids is widely used in the manufacturing process of medicines. However, in the process of solute and solvent mixing experiments, there are always problems such as slow dissolution, difficult to control the dissolution temperature, and the toxicity of drugs that harm the health of mixing workers. It is particularly important to have a small-power mixer; most of the existing small mixers have fixed and immovable stirring shafts and single-axis stirring, which leads to insufficient mixing of solutes and solvents. Part of the solute is always located directly below the stirring shaft, making it difficult to form effective stirring and mixing, resulting in insufficient dissolution. Utility Model Content

[0003] The purpose of the utility model is to provide a small solid-liquid mixer to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a small solid-liquid mixer, comprising a base plate, an eccentric wheel, a bearing, and a stirring tank, wherein a vertical lifting mechanism is arranged on the base plate, and the vertical lifting mechanism is installed with one end of two horizontal brackets, and the other ends of the two horizontal brackets are fixedly connected to a horizontal fixed plate, and a horizontal slide plate is horizontally slidably connected to the horizontal fixed plate, and a stirring shaft is rotatably connected to the horizontal slide plate, and the stirring shaft is driven by a driving assembly, and the driving assembly is connected to the horizontal bracket, and the lower end of the stirring shaft passes through a rotating groove and enters the stirring tank and is fixedly connected to a plurality of blades, the stirring tank is arranged on the base plate, and the rotating groove is arranged on the horizontal fixed plate, the stirring shaft is fixedly connected to the eccentric wheel, and the horizontal fixed plate is rotatably connected to the bearing, and the bearing is rollingly connected to the eccentric wheel, and a reset assembly is also arranged on the horizontal slide plate, and the reset assembly pushes the horizontal slide plate to reset.

[0005] Preferably, a plurality of universal wheels are fixedly connected under the bottom plate, and fixed foot cups are arranged beside the universal wheels, and the fixed foot cups are fixed on the bottom plate.

[0006] Preferably, the vertical lifting mechanism includes a column, the lower end of the column is fixedly connected to the base plate, the upper end of the column is fixedly connected to one side of the fixed plate, the other side of the fixed plate is fixedly connected to two vertical sliders on both sides, the two vertical sliders are respectively slidably connected to a vertical slide rail, the upper and lower ends of the vertical slide rail are respectively fixedly connected to a slide rail connecting rod, each of the vertical slide rails is respectively fixedly connected to one end of a horizontal bracket, a lifting support plate is fixedly connected between the two horizontal brackets, the lifting support plate is fixedly connected to the output end of the lifting cylinder, and the lifting cylinder is fixed on the base plate.

[0007] Preferably, one end of a plurality of horizontal sliding blocks is fixedly connected below the horizontal sliding plate, and the other end of the horizontal sliding block is slidably connected to a horizontal sliding rail, and the horizontal sliding rail is fixed to a horizontal fixed plate.

[0008] Preferably, the reset assembly includes a tension spring and a pull hook, one end of the horizontal slide plate away from the column is fixedly connected to one end of the tension spring, the other end of the tension spring is fixedly connected to the upper end of the pull hook, and the pull hook is fixed on the horizontal fixed plate.

[0009] Preferably, a handrail for grasping the moving device is provided behind the column.

[0010] Preferably, an insulation tank is also provided outside the stirring tank, and an upper cover adapted thereto is also provided on the insulation tank, the upper end of the insulation tank is threadedly connected to the stirring tank, and a gap into which hot water can be injected is formed between the stirring tank and the insulation tank, the upper end of the insulation tank is fixedly connected to one end of a water inlet pipe, and a water inlet valve is provided on the water inlet pipe, the lower end of the insulation tank is fixedly connected to one end of a water outlet pipe, and a water outlet valve is provided on the water outlet pipe, and the insulation tank is placed on the bottom plate.

[0011] Preferably, the upper cover is composed of two upper cover plates, a plurality of positioning grooves are arranged on the upper edge of the mixing tank, a positioning block is fixedly connected to the arc-shaped middle part of the upper cover plate, and the positioning block can be inserted into the positioning groove, an axial hole groove is arranged on one side of the straight side of the upper cover plate, and the two axial hole grooves are connected to form an axial hole for facilitating the movement of the mixing shaft, and a positioning rod and a positioning hole are respectively arranged on one side of the straight side of the upper cover plate with the axial hole groove as the center, one end of the positioning rod is fixedly connected to the upper cover plate, and the other end can be inserted into the positioning hole of the other upper cover plate.

[0012] Preferably, the driving assembly includes a driving wheel and a driven wheel, an air motor is fixedly connected to the horizontal bracket, the output shaft of the air motor is connected to the reducer, the output shaft of the reducer is fixedly connected to the driving wheel, the stirring shaft is fixedly connected to the driven wheel, one end of the wheel outer rod is also fixedly connected to the horizontal bracket, the other end of the wheel outer rod is slidably connected to one end of the wheel inner rod, the other end of the wheel inner rod is rotatably connected to the tensioning wheel, the driving wheel, driven wheel and tensioning wheel rotate synchronously through a belt, and a wheel spring is also wound on the wheel inner rod, one end of the wheel spring is fixedly connected to the wheel inner rod, and the other end of the wheel spring is fixedly connected to the wheel outer rod.

[0013] Preferably, the mixing tank has an outer shape of Ø450×450.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the stirring shaft of the utility model can move horizontally while stirring, thereby avoiding long-term stirring of a single axis, thereby avoiding solute precipitation at the bottom of the stirring shaft, achieving the effect of sufficient stirring and accelerating dissolution; the utility model is provided with a vertical lifting mechanism, which can drive the stirring shaft and blades to rise, thereby facilitating the operation of the stirring tank;

[0015] The utility model is provided with a heat preservation tank, the upper end of which is threadedly connected to the stirring tank, a gap into which hot water can be injected is formed between the stirring tank and the heat preservation tank, and the stirring tank and the heat preservation tank can be disassembled and separated, so that the stirring tank is lighter and convenient to move, and the heat preservation tank is convenient to clean, so as to avoid scale blocking the water inlet pipe and the water inlet pipe;

[0016] The utility model is provided with an upper cover to prevent the stirring material from splashing during the stirring process. The upper cover is composed of two upper cover plates to avoid affecting the stirring shaft. The upper cover plate is also provided with an axis hole groove so that the stirring shaft can move laterally during stirring. A plurality of positioning grooves are provided on the upper edge of the stirring tank. During the docking process of the two upper cover plates, the positioning rod is inserted into the positioning hole, and the positioning block is inserted into the positioning groove provided on the stirring tank to prevent the upper cover from rotating and colliding with the stirring shaft and causing damage to the stirring shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 3 for Figure 2 A local enlarged view of point A;

[0020] Figure 4 This is a schematic diagram of the structure of the insulation tank of the utility model;

[0021] Figure 5 This is a schematic diagram of the structure of the upper cover of the utility model when viewed from above;

[0022] Figure 6 It is a structural schematic diagram of the tensioning wheel of the utility model.

[0023] In the figure: 1, bottom plate, 2, universal wheel, 3, fixed foot cup, 4, column, 5, fixed plate, 6, vertical slider, 7, vertical slide rail, 8, slide rail connecting rod, 9, horizontal bracket, 10, lifting support plate, 11, lifting cylinder, 12, horizontal fixed plate, 13, horizontal slide rail, 14, horizontal slider, 15, horizontal slide plate, 16, tension spring, 17, hook, 18, reducer, 19, pneumatic motor, 20, rotating trough, 21, stirring Shaft, 22, eccentric wheel, 23, bearing, 24, mixing tank, 25, blade, 26, insulation tank, 27, water outlet pipe, 28, water outlet valve, 29, water inlet pipe, 30, water inlet valve, 31, positioning groove, 32, upper cover plate, 33, positioning block, 34, shaft hole groove, 35, positioning rod, 36, positioning hole, 37, driving wheel, 38, driven wheel, 39, tensioning wheel, 40, wheel inner rod, 41, wheel outer rod, 42, wheel spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-6In order to solve the problem that most of the existing small-scale stirrers have fixed and immovable stirring shafts and single-axis stirring, which leads to insufficient mixing of solute and solvent, and part of the solute is always located directly below the stirring shaft, making it difficult to form effective stirring and mixing, thereby leading to insufficient dissolution, the stirring shaft can be moved to avoid solute precipitation at the bottom of the stirring shaft, thereby achieving the purpose of sufficient stirring and accelerated dissolution. The utility model provides a technical solution: a small solid-liquid mixer, including a bottom plate 1, an eccentric wheel 22, a bearing 23, and a stirring tank 24. A vertical lifting mechanism is provided on the bottom plate 1, and the vertical lifting mechanism is installed with one end of two horizontal brackets 9, and the other ends of the two horizontal brackets 9 are fixedly connected to a horizontal fixed plate 12, and a horizontal slide plate 15 is horizontally slidably connected to the horizontal fixed plate 12, and the horizontal slide plate 15 is rotatably connected to a stirring shaft 21, and the stirring shaft 21 is driven The driving assembly is connected to the horizontal bracket 9. The lower end of the stirring shaft 21 passes through the rotating groove 20 and enters the stirring tank 24 and is fixedly connected to a plurality of blades 25. The stirring tank 24 is arranged on the bottom plate 1, and the rotating groove 20 is arranged on the horizontal fixed plate 12. The stirring tank 24 is also provided with an insulation tank 26, and an upper cover adapted thereto is also arranged thereon. The upper end of the stirring shaft 21 is fixedly connected to the eccentric wheel 22, and the bearing 23 is rotatably connected to the horizontal fixed plate 12. The bearing 23 is rollingly connected to the eccentric wheel 22. The reset assembly of the horizontal slide 15 includes a tension spring 16 and a hook 17, and a reset assembly is also arranged thereon. One end of the horizontal slide 15 away from the column 4 is fixedly connected to one end of the tension spring 16, and the other end of the tension spring 16 is fixedly connected to the upper end of the hook 17. The hook 17 is fixed to the horizontal fixed plate 12, and a handrail for grasping the moving device is arranged behind the column 4. The shape of the stirring tank 24 is Ø450×450. The cylinder, reducer and motor all use existing models and can be controlled by PLC.When in use, the stirring tank 24 is placed in the insulation tank 26, the stirring tank 24 is moved to a suitable position, the stirring tank 24 and the insulation tank 26 are placed on the device using an existing liftable platform vehicle, stirring materials are added for stirring, and the stirring materials are a mixture of solid powder NA and acetonitrile. During stirring, the vertical lifting mechanism is started to allow the lower end of the stirring shaft 21 to enter the stirring tank, and the upper cover is closed to prevent the stirring materials from splashing, the driving component is started, the driving component drives the stirring shaft 21 to rotate, the stirring shaft 21 drives the blades 25 to stir, and the stirring shaft 21 drives the eccentric wheel 22 to rotate at the same time. The eccentric wheel 22 contacts the bearing 23 during the rotation process, and the eccentric wheel 22 is pushed by the interaction force, and the eccentric wheel 22 The stirring shaft 21 is driven to move horizontally, and the stirring shaft 21 drives the blades 25 and the horizontal slide plate 15 to move horizontally. The horizontal slide plate 15 slides on the horizontal fixed plate 12, and the horizontal slide plate 15 stretches the tension spring 16. When the eccentric wheel 22 is away from the bearing 23, the horizontal slide plate 15 is reset by the tension spring 16, so that the horizontal slide plate 15 drives the stirring shaft 21 to do horizontal reciprocating motion. The stirring process is to first add acetonitrile into the stirring barrel, and then add solid powder NA while stirring and stir it fully to ensure that the solid powder does not sink to the bottom, does not splash and hangs on the wall less, and the ratio of NA to acetonitrile is 1:2-1:3; after the stirring is completed, the upper cover is opened, the stirring shaft 21 is raised, and the stirring tank 24 is transferred to the platform car for the next process.

[0026] See also Figure 1-2 In order to make the device convenient to move and use, a plurality of universal wheels 2 are fixedly connected under the bottom plate 1, and a fixed foot cup 3 is arranged beside the universal wheel 2, and the fixed foot cup 3 is fixed on the bottom plate 1.

[0027] See also Figure 1-2 In order to facilitate feeding and discharging and avoid the influence of the stirring shaft and blades, a vertical lifting mechanism is provided. The vertical lifting mechanism includes a column 4, the lower end of the column 4 is fixedly connected to the bottom plate 1, the upper end of the column 4 is fixedly connected to one side of the fixed plate 5, and the other side of the fixed plate 5 is fixedly connected to two vertical sliders 6. The two vertical sliders 6 are respectively slidably connected to a vertical slide rail 7, and the upper and lower ends of the vertical slide rail 7 are respectively fixedly connected to a slide rail connecting rod 8, and each vertical slide rail 7 is respectively fixedly connected to one end of a horizontal bracket 9, and a lifting support plate 10 is fixedly connected between the two horizontal brackets 9. The lifting support plate 10 is fixedly connected to the output end of the lifting cylinder 11, and the lifting cylinder 11 is fixed on the bottom plate 1, JIS standard cylinder. Before stirring, start the lifting cylinder 11, which drives the lifting support plate 10 to move. The lifting cylinder 11 drives the two horizontal brackets 9 to move for the lifting support plate 10. The horizontal bracket 9 drives the vertical slide rail 7 to move, so that the vertical slide rail 7 slides on the vertical slide block 6, thereby lifting the entire horizontal bracket 9, driving the stirring shaft 21 and the blade 25 to rise, making it convenient to operate the stirring tank 24.

[0028] See also Figure 3In order to facilitate the sliding of the horizontal slide plate and drive the stirring shaft 21 to move, one end of a plurality of horizontal sliders 14 is fixedly connected to the bottom of the horizontal slide plate 15, and the other end of the horizontal slider 14 is slidably connected to the horizontal slide rail 13, and the horizontal slide rail 13 is fixed to the horizontal fixed plate 12. During the stirring process, the horizontal slide plate 15 drives the horizontal sliders 14 to slide on the horizontal slide rail 13.

[0029] See also Figure 4 In order to heat the mixing tank 24, the upper end of the insulation tank 26 is threadedly connected to the mixing tank 24, and a gap is formed between the mixing tank 24 and the insulation tank 26 to inject hot water. The upper end of the insulation tank 26 is fixedly connected to one end of the water inlet pipe 29, and the water inlet pipe 29 is provided with a water inlet valve 30. The lower end of the insulation tank 26 is fixedly connected to one end of the water outlet pipe 27, and the water outlet pipe 27 is provided with a water outlet valve 28. The insulation tank 26 is placed on the bottom plate 1. The water inlet valve 30 and the water outlet valve 28 are one-way valves, both of which are existing models. When in use, the upper end of the insulation tank 26 is threadedly connected to the mixing tank 24, and then hot water is injected between the mixing tank 24 and the insulation tank 26 through the water inlet pipe 29 at the upper end of the insulation tank 26. The insulation tank 26 is made of existing insulation materials, so that the hot water can maintain the temperature for a long time. After the stirring is completed, the water is discharged from the water outlet pipe 27, and then the mixing tank 24 is rotated and removed and sent to the next process. The stirring tank 24 and the insulation tank 26 can be disassembled and separated, making the stirring tank 24 lighter and easier to move. At the same time, it is convenient to clean the insulation tank 26 to prevent scale from clogging the water inlet pipe 29 and the water inlet pipe 29.

[0030] See also Figure 5In order to prevent the stirring material from splashing during the stirring process, an upper cover is provided on the stirring tank 24. The upper cover of the stirring tank 24 is composed of two upper cover plates 32. The two upper cover plates 32 are arranged symmetrically with the center. A plurality of positioning grooves 31 are arranged on the upper edge of the stirring tank 24. The upper cover plate 32 is fixedly connected to the middle of the arc, and the positioning block 33 can be inserted into the positioning groove 31. An axial hole groove 34 is arranged on one side of the straight side of the upper cover plate 32. The two axial hole grooves 34 are connected to form an axial hole for facilitating the movement of the stirring shaft 21. A positioning rod 35 and a positioning hole 36 are respectively arranged on one side of the straight side of the upper cover plate 32 with the axial hole groove 34 as the center. One end of the positioning rod 35 is fixedly connected to the upper cover plate 32. The other end can be inserted into the positioning hole 36 of the other upper cover plate 32. When closing the lid, the two upper cover plates 32 are placed on the stirring tank 24 and aligned so that the stirring shaft 21 is located in the two shaft hole grooves 34, and the positioning rod 35 on one upper cover plate 32 is aligned with the positioning hole 36 of the other upper cover plate 32, and then the two upper cover plates 32 are moved to dock with each other so that the positioning rod 35 is inserted into the positioning hole 36. During the movement, the positioning block 33 is inserted into the positioning groove 31 provided on the stirring tank 24 to prevent the upper cover from rotating and colliding with the stirring shaft 21. At the same time, a plurality of positioning grooves 31 are provided on the upper edge of the stirring tank 24 to facilitate the positioning of the upper cover. The upper cover can be locked without significantly rotating the stirring tank 24, and the shaft hole groove 34 allows the stirring shaft 21 to move laterally during stirring.

[0031] See also Figure 3 , 6In order to drive the stirring shaft 21 to rotate, a driving assembly is provided, and the driving assembly includes a driving wheel 37 and a driven wheel 38. The pneumatic motor 19 is fixedly connected to the horizontal bracket 9, and the output shaft of the pneumatic motor 19 is connected to the reducer 18. The output shaft of the reducer 18 is fixedly connected to the driving wheel 37. The stirring shaft 21 is fixedly connected to the driven wheel 38. One end of the wheel outer rod 41 is also fixedly connected to the horizontal bracket 9, and the other end of the wheel outer rod 41 is slidably connected to one end of the wheel inner rod 40, and the other end of the wheel inner rod 40 is rotatably connected to the tensioning wheel 39. The driving wheel 37, the driven wheel 38, and the tensioning wheel 39 rotate synchronously through the belt. A wheel spring 42 is also wound around the wheel inner rod 40, and one end of the wheel spring 42 is fixedly connected to the wheel inner rod 40, and the other end thereof is fixedly connected to the wheel outer rod 41. When in use, the pneumatic motor 19 is started, and the pneumatic motor 19 drives the reducer 18 to start, and the reducer 18 drives the driving wheel 37 to rotate, and the driving wheel 37 drives the driven wheel 38 to rotate through the belt, and the driven wheel 38 drives the stirring shaft 21 to rotate. In the process of the stirring shaft 21 rotating and reciprocating, the distance between the driving wheel 37 and the driven wheel 38 will change. When the driving wheel 37 and the driven wheel 38 are far away from each other, the belt is gradually straightened, and the belt drives the tensioning wheel 39 to move, and the tensioning wheel 39 drives the inner wheel rod 40 to extend, and the inner wheel rod 40 compresses the wheel spring 42. When the driving wheel 37 and the driven wheel 38 are close to each other, the belt is relaxed, and the inner wheel rod 40 retracts into the outer wheel rod 41 under the action of the wheel spring 42, and the inner wheel rod 40 drives the tensioning wheel 39 to move, so that the tensioning wheel 39 is always in contact with the belt, tightens the belt, and ensures the transmission effect.

[0032] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A small solid-liquid mixer, comprising a bottom plate (1), an eccentric wheel (22), a bearing (23), and a stirring tank (24), characterized in that: The bottom plate (1) is provided with a vertical lifting mechanism, the vertical lifting mechanism is installed with one end of two horizontal brackets (9), the other ends of the two horizontal brackets (9) are fixedly connected to a horizontal fixed plate (12), the horizontal fixed plate (12) is horizontally slidably connected to a horizontal slide plate (15), the horizontal slide plate (15) is rotatably connected to a stirring shaft (21), the stirring shaft (21) is driven by a driving component, the driving component is connected to the horizontal bracket (9), the lower end of the stirring shaft (21) passes through a rotating groove (20) and enters a stirring tank (24) to be fixedly connected to a plurality of blades (25), the stirring tank (24) is arranged on the bottom plate (1), the rotating groove (20) is arranged on the horizontal fixed plate (12), the stirring shaft (21) is fixedly connected to an eccentric wheel (22), the horizontal fixed plate (12) is rotatably connected to a bearing (23), the bearing (23) is rollingly connected to the eccentric wheel (22), and the horizontal slide plate (15) is also provided with a reset component, the reset component pushes the horizontal slide plate (15) to reset.

2. A small solid-liquid mixer according to claim 1, characterized in that: A plurality of universal wheels (2) are fixedly connected to the bottom of the base plate (1), and a fixed foot cup (3) is arranged next to the universal wheel (2), and the fixed foot cup (3) is fixed on the base plate (1).

3. A small solid-liquid mixer according to claim 1, characterized in that: The vertical lifting mechanism comprises a column (4), the lower end of the column (4) is fixedly connected to the bottom plate (1), the upper end of the column (4) is fixedly connected to one side of a fixed plate (5), the other side of the fixed plate (5) is fixedly connected to two vertical sliders (6), the two vertical sliders (6) are respectively slidably connected to a vertical slide rail (7), the upper and lower ends of the vertical slide rail (7) are respectively fixedly connected to a slide rail connecting rod (8), each of the vertical slide rails (7) is respectively fixedly connected to one end of a horizontal bracket (9), a lifting support plate (10) is fixedly connected between the two horizontal brackets (9), the lifting support plate (10) is fixedly connected to the output end of a lifting cylinder (11), and the lifting cylinder (11) is fixed to the bottom plate (1).

4. A small solid-liquid mixer according to claim 1, characterized in that: One end of a plurality of horizontal sliding blocks (14) is fixedly connected to the bottom of the horizontal sliding plate (15), and the other end of the horizontal sliding block (14) is slidably connected to a horizontal sliding rail (13), and the horizontal sliding rail (13) is fixed to the horizontal fixed plate (12).

5. A small solid-liquid mixer according to claim 3, characterized in that: The reset assembly comprises a tension spring (16) and a pull hook (17); one end of the horizontal slide plate (15) away from the column (4) is fixedly connected to one end of the tension spring (16); the other end of the tension spring (16) is fixedly connected to the upper end of the pull hook (17); and the pull hook (17) is fixed to the horizontal fixed plate (12).

6. A small solid-liquid mixer according to claim 3, characterized in that: An armrest for grasping the moving device is arranged behind the upright post (4).

7. A small solid-liquid mixer according to claim 1, characterized in that: An insulation tank (26) is also provided outside the stirring tank (24), and an upper cover adapted thereto is also provided thereon; the upper end of the insulation tank (26) is threadedly connected to the stirring tank (24); a gap into which hot water can be injected is formed between the stirring tank (24) and the insulation tank (26); the upper end of the insulation tank (26) is fixedly connected to one end of a water inlet pipe (29); the water inlet pipe (29) is provided with a water inlet valve (30); the lower end of the insulation tank (26) is fixedly connected to one end of a water outlet pipe (27); the water outlet pipe (27) is provided with a water outlet valve (28); and the insulation tank (26) is placed on the bottom plate (1).

8. A small solid-liquid mixer according to claim 7, characterized in that: The upper cover is composed of two upper cover plates (32). A plurality of positioning grooves (31) are arranged on the upper edge of the stirring tank (24). A positioning block (33) is fixedly connected to the arc-shaped middle portion of the upper cover plate (32). The positioning block (33) can be inserted into the positioning groove (31). An axial hole groove (34) is arranged on one side of the straight side of the upper cover plate (32). The two axial hole grooves (34) are butted together to form an axial hole for facilitating the movement of the stirring shaft (21). A positioning rod (35) and a positioning hole (36) are respectively arranged on one side of the straight side of the upper cover plate (32) with the axial hole groove (34) as the center. One end of the positioning rod (35) is fixedly connected to the upper cover plate (32), and the other end can be inserted into the positioning hole (36) of the other upper cover plate (32).

9. A small solid-liquid mixer according to claim 1, characterized in that: The driving assembly comprises a driving wheel (37) and a driven wheel (38); the horizontal support (9) is fixedly connected to an air motor (19); the output shaft of the air motor (19) is connected to a reducer (18); the output shaft of the reducer (18) is fixedly connected to the driving wheel (37); the stirring shaft (21) is fixedly connected to the driven wheel (38); one end of a wheel outer rod (41) is also fixedly connected to the horizontal support (9); the other end of the wheel outer rod (41) is slidably connected to one end of a wheel inner rod (40); the other end of the wheel inner rod (40) is rotatably connected to a tensioning wheel (39); the driving wheel (37), the driven wheel (38) and the tensioning wheel (39) are synchronously rotated via a belt; a wheel spring (42) is also wound around the wheel inner rod (40); one end of the wheel spring (42) is fixedly connected to the wheel inner rod (40); and the other end of the wheel spring (42) is fixedly connected to the wheel outer rod (41).

10. A small solid-liquid mixer according to claim 1, characterized in that: The mixing tank (24) has an outer shape of Ø450×450.

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