CN108099000B - Stirring equipment and stirring system - Google Patents

Abstract

The invention provides stirring equipment and a stirring system, and belongs to the field of building construction equipment. The stirring equipment comprises a tank body, a stirring device, a first driving device and a second driving device, wherein a containing space is formed in the tank body, a feeding hole and a discharging hole are formed in the tank body, and the feeding hole and the discharging hole are communicated with the containing space. Agitating unit includes (mixing) shaft and at least one stirring subassembly, and the (mixing) shaft is vertical to be extended in accommodation space, and the (mixing) shaft rotates with a jar body to be connected, and the (mixing) shaft can rotate around vertical axis for a jar body relatively, and the stirring subassembly includes at least one stirring body, and the stirring body transverse arrangement, the stirring body rotates with the (mixing) shaft to be connected, and the stirring body can rotate around horizontal axis relatively the (mixing) shaft. The first driving device is used for driving the stirring shaft to rotate. The second driving device is used for driving the stirring body to rotate. The stirring equipment can stir the concrete in two mutually perpendicular directions so as to fully stir the concrete, thereby stirring the concrete more uniformly.

Description

Stirring equipment and stirring system

Technical Field

The invention relates to the field of building construction equipment, in particular to stirring equipment and a stirring system.

Background

Concrete is often used during construction. Concrete is a very common building material, and is generally prepared by taking cement as a cementing material, taking sand and stone as aggregates, mixing the aggregates with water according to a certain proportion, stirring and molding. Therefore, the concrete is required to be fully stirred by a stirring device when being prepared.

The existing stirring equipment generally comprises a tank body, a spiral stirring shaft and a motor, wherein the spiral stirring shaft vertically extends into the tank body, and the motor drives the spiral stirring shaft to rotate so as to achieve the purpose of stirring. The stirring equipment has a single stirring mode, cannot fully stir concrete, and has poor stirring uniformity.

Disclosure of Invention

The invention aims to provide a stirring device to solve the problem that the stirring uniformity of concrete is poor.

The invention aims to provide a stirring system to solve the problem that the stirring uniformity of a stirring device for stirring concrete is poor.

The invention is realized by the following steps:

in view of the first object, the present invention provides a stirring apparatus comprising:

the tank body is internally provided with a containing space, the tank body is provided with a feeding hole and a discharging hole, and the feeding hole and the discharging hole are both communicated with the containing space;

the stirring device comprises a stirring shaft and at least one stirring assembly, the stirring shaft vertically extends into the accommodating space, the stirring shaft is rotatably connected with the tank body, the stirring shaft can rotate around a vertical axis relative to the tank body, the stirring assembly is positioned in the accommodating space, the stirring assembly comprises at least one stirring body, the stirring body is transversely arranged, the stirring body is rotatably connected with the stirring shaft, and the stirring body can rotate around a transverse axis relative to the stirring shaft;

the first driving device is used for driving the stirring shaft to rotate around a vertical axis relative to the tank body;

and the second driving device is used for driving the stirring body to rotate around the transverse axis relative to the stirring shaft.

Further, the stirring body comprises a main shaft and at least one stirring blade;

the main shaft comprises a first shaft and a second shaft which are coaxially arranged, the first shaft is rotationally connected with the main shaft, the stirring blade is fixed on the second shaft, the second shaft is movably connected with the first shaft, and the second shaft can axially move relative to the first shaft so as to enable the stirring blade to be close to or far away from the stirring shaft;

a limiting structure is arranged between the first shaft and the second shaft to limit the second shaft to rotate relative to the first shaft.

Furthermore, the stirring blade extends along the radial direction of the second shaft, and on the radial projection of the second shaft, the stirring blade and the second shaft are arranged at an acute angle.

Further, the stirring blade is provided with a contact surface, and when the first shaft moves relative to the second shaft and the stirring blade is far away from the stirring shaft, the contact surface can be in contact with the inner side wall of the tank body.

Furthermore, an inserting hole is formed in the second shaft, and one end of the first shaft is inserted into the inserting hole;

the limiting structure comprises a clamping portion arranged on the first shaft and a clamping groove arranged on the inner wall of the inserting hole, and the clamping portion is clamped in the clamping groove.

Further, agitating unit includes a plurality of stirring subassemblies, and a plurality of stirring subassemblies are in vertical interval distribution in the (mixing) shaft.

Further, the stirring assembly comprises two stirring bodies, and the two stirring bodies are symmetrically distributed on two sides of the stirring shaft.

Furthermore, a central hole is arranged inside the stirring shaft;

the second driving device comprises a power part and a driving shaft, the driving shaft is inserted into the central hole, the driving shaft is in transmission connection with the stirring body through a pair of meshed conical gears, and the power part is used for driving the driving shaft to rotate.

Furthermore, the outer side of the stirring shaft is provided with a surrounding body, and the inner wall of the surrounding body and the outer wall of the stirring shaft define a liquid conveying channel;

the surrounding body is provided with a liquid inlet and a liquid outlet which are communicated with the infusion channel, the liquid inlet is positioned outside the tank body, and the liquid outlet is communicated with the accommodating space.

Based on the second purpose, the invention provides a stirring system, which comprises a water supply device and the stirring equipment, wherein the water supply device is communicated with the liquid inlet.

The invention has the beneficial effects that:

the invention provides a stirring device, wherein a first driving device can drive a stirring shaft to rotate when working, so that a stirring body rotates around a vertical axis, and concrete in an accommodating space can roll around the vertical axis, thereby achieving the effect of transverse stirring; when the second driving device works, the stirring body can rotate around the transverse axis relative to the stirring shaft, so that concrete in the accommodating space can roll around the transverse axis, and the longitudinal stirring effect is achieved. The stirring equipment can stir the concrete in two mutually perpendicular directions so as to fully stir the concrete, thereby stirring the concrete more uniformly.

The invention provides a stirring system, which comprises the stirring equipment and has all the advantages of the stirring equipment.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a stirring apparatus provided in embodiment 1 of the present invention;

FIG. 2 is a schematic structural view of the can body shown in FIG. 1;

FIG. 3 is a schematic view of the mixing apparatus shown in FIG. 1 connected to a second driving device;

FIG. 4 is a schematic view of the structure of the stirring shaft shown in FIG. 3;

FIG. 5 is a cross-sectional view of the stirring body shown in FIG. 3;

FIG. 6 is a schematic view of the connection of the first shaft to the second shaft shown in FIG. 5;

FIG. 7 is a schematic view from a first perspective of the mixing blade of FIG. 5 coupled to a second shaft;

FIG. 8 is a schematic view from a second perspective of the mixing blade of FIG. 5 coupled to a second shaft;

fig. 9 is a schematic structural diagram of a stirring system provided in embodiment 2 of the present invention.

Icon: 100-stirring equipment; 10-a tank body; 11-an accommodation space; 111-a can body; 1111-cylindrical body; 1112-a cone; 112-can lid; 113-a discharge port; 114-a feed inlet; 115-shaft through hole; 20-a stirring device; 21-a stirring shaft; 211-a central hole; 212-surround; 2121-liquid inlet; 2122-a liquid outlet; 213-an infusion channel; 214-an annular projection; 22-a stirring assembly; 23-a stirring body; 231-a main shaft; 2311-a first shaft; 2312-a second axis; 2313-inserting holes; 2314-a clamping part; 2315-clamping groove; 232-stirring blade; 30-a first drive; 31-a drive motor; 32-a first gear; 33-a second gear; 40-a second drive; 41-a servo motor; 42-a drive shaft; 43-a first conical gear; 44-a second conical gear; 50-a discharging device; 51-a motor; 52-a screw rod; 200-a stirring system; 210-a water tank; 220-a water pump; 230-a water supply pipe; 240-connecting sleeve; 241-annular groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that the indication of the orientation or the positional relationship is based on the orientation or the positional relationship shown in the drawings, or the orientation or the positional relationship which is usually placed when the product of the present invention is used, or the orientation or the positional relationship which is usually understood by those skilled in the art, or the orientation or the positional relationship which is usually placed when the product of the present invention is used, and is only for the convenience of describing the present invention and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, cannot be understood as limiting the present invention. Furthermore, the terms "first" and "second" are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present invention, it should be further noted that the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, unless explicitly stated or limited otherwise; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in fig. 1, the present embodiment provides a stirring apparatus 100, which includes a tank 10, a stirring device 20, a first driving device 30, a second driving device 40, and a discharging device 50.

In which, as shown in fig. 2, a receiving space 11 for receiving concrete is formed inside the can body 10. The can body 10 includes a can body 111 and a can lid 112. The can body 111 comprises a cylindrical body 1111 and a conical body 1112, wherein the cylindrical body 1111 is cylindrical, and the cylindrical body 1111 has a structure with openings at the upper end and the lower end; the cone 1112 is conical and has an open top end, the open end of the cone 1112 is a large end, and the large end of the cone 1112 is connected with the bottom end of the cylinder 1111. The cone 1112 is provided with a discharge port 113, and the discharge port 113 is communicated with the accommodating space 11. The tank cover 112 is circular, a feed inlet 114 and a shaft hole 115 are arranged on the tank cover 112, and the shaft hole 115 is positioned in the center of the tank cover 112. The can lid 112 is fastened to the top of the can body 111, and the feed opening 114 communicates with the accommodating space 11.

As shown in fig. 3, the stirring device 20 includes a stirring shaft 21 and a plurality of stirring assemblies 22, and all the stirring assemblies 22 are vertically spaced on the stirring shaft 21.

As shown in fig. 4, the stirring shaft 21 is a hollow shaft, and a center hole 211 penetrating the top end of the stirring shaft 21 is provided inside the stirring shaft 21. The outer side of the stirring shaft 21 is provided with a surrounding body 212, the surrounding body 212 is arranged coaxially with the stirring shaft 21, and the surrounding body 212 is close to the top end of the stirring shaft 21. The surrounding body 212 is circular, the outer diameter of the surrounding body 212 is matched with the bore diameter of the through-hole 115 on the tank cover 112, the inner wall of the surrounding body 212 and the outer wall of the stirring shaft 21 define a liquid conveying channel 213, and the liquid conveying channel 213 is an annular cavity surrounding the stirring shaft 21. The surrounding body 212 is provided with a liquid inlet 2121 and a liquid outlet 2122, and the liquid inlet 2121 and the liquid outlet 2122 are communicated with the liquid conveying passage 213. In addition, an annular protrusion 214 is provided on an outer wall of the surrounding body 212, and the liquid inlet 2121 and the liquid outlet 2122 are respectively located at upper and lower sides of the annular protrusion 214.

In this embodiment, the stirring assembly 22 includes two stirring bodies 23, and the two stirring bodies 23 are symmetrically distributed on two sides of the stirring shaft 21, that is, the two stirring bodies 23 are symmetric with respect to the axis of the stirring shaft 21.

As shown in fig. 5, the stirring body 23 includes a main shaft 231 and at least one stirring blade 232. The main shaft 231 comprises a first shaft 2311 and a second shaft 2312, the first shaft 2311 is movably connected with the second shaft 2312, the second shaft 2312 can axially move relative to the first shaft 2311, and the three stirring blades 232 are all fixed on the second shaft 2312.

Specifically, the first shaft 2311 is a solid shaft, the second shaft 2312 is provided with an inserting hole 2313, one end of the inserting hole 2313 penetrates through one axial end of the second shaft 2312, the diameter of the inserting hole 2313 is matched with that of the first shaft 2311, and the first shaft 2311 and the second shaft 2312 are coaxially arranged. One end of the first shaft 2311 is inserted into the insertion hole 2313, so that the second shaft 2312 is movably connected with the first shaft 2311. Axial movement of the second shaft 2312 relative to the first shaft 2311 may cause the entire stirring body 23 to lengthen or shorten.

In addition, as shown in fig. 6, a clamping portion 2314 is arranged on the first shaft 2311, the clamping portion 2314 extends along the radial direction of the first shaft 2311, a clamping groove 2315 is arranged on the hole wall of the second shaft 2312, which is inserted into the hole 2313, the width of the clamping groove 2315 is consistent with that of the clamping portion 2314, and the clamping portion 2314 is clamped in the clamping groove 2315 and matched with the clamping groove 2315, so that a limiting structure for limiting the rotation of the second shaft 2312 relative to the first shaft 2311 is formed. That is to say, after the engaging portion 2314 of the first shaft 2311 is engaged with the engaging groove 2315 of the second shaft 2312, the second shaft 2312 cannot rotate relative to the first shaft 2311, and the second shaft 2312 can only move axially relative to the first shaft 2311.

As shown in fig. 7, in the present embodiment, there are three stirring vanes 232, the three stirring vanes 232 are circumferentially distributed on the second shaft 2312, and two adjacent stirring vanes 232 are spaced by 120 degrees. As shown in fig. 8, the stirring vane 232 is a sheet structure, one end of the stirring vane 232 is fixedly connected to the second shaft 2312, the stirring vane 232 extends along the radial direction of the second shaft 2312, and the stirring vane 232 and the second shaft 2312 are arranged at an acute angle in the radial direction (the length direction of the stirring vane 232) projection of the second shaft 2312. The end surface of one end of the stirring vanes 232 in the width direction is a contact surface, and the contact surface is flush with the end surface of the blind end of the second shaft 2312.

As shown in fig. 3, the first shaft 2311 of the stirring body 23 extends in the radial direction of the stirring shaft 21, the first shaft 2311 is rotatably connected with the stirring shaft 21, one end of the first shaft 2311, which is far away from the second shaft 2312, is inserted into the stirring shaft 21, and the first shaft 2311 can rotate around its own axis relative to the stirring shaft 21. When the first shaft 2311 rotates relative to the stirring shaft 21, the second shaft 2312 and the stirring vanes 232 rotate along with the first shaft 2311.

As shown in fig. 1, the surrounding body 212 of the stirring shaft 21 is inserted into the shaft hole 115 of the tank cover 112 and forms a rotating fit, and the annular protrusion 214 on the surrounding body 212 contacts with the tank cover 112 to play a role in limiting; one end of the stirring shaft 21 extends into the accommodating space 11, and the stirring device 20 is positioned in the accommodating space 11; the liquid inlet 2121 of the annular body is positioned outside the tank body 10, and the liquid outlet 2122 of the annular body is communicated with the accommodating space 11. The stirring shaft 21 is vertically arranged, the stirring shaft 21 can rotate around a vertical axis relative to the tank body 10, and the vertical axis is the axis of the stirring shaft 21. All stirring bodies 23 in the stirring device 20 are arranged in the transverse direction, and the stirring bodies 23 can rotate relative to the stirring shaft 21 around a transverse axis, i.e. the axis of the stirring bodies 23 themselves.

The first driving device 30 is used for driving the stirring shaft 21 to rotate around a vertical axis relative to the tank body 10. In this embodiment, the first driving device 30 includes a driving motor 31, a first gear 32 and a second gear 33, the number of teeth of the first gear 32 is smaller than that of the second gear 33, the driving motor 31 is fixed on the tank cover 112, the first gear 32 is fixed on the outer side of the output shaft of the driving motor 31, the second gear 33 is fixed on the outer side of the surrounding body 212, and the first gear 32 is meshed with the second gear 33. When the driving motor 31 is operated, the stirring shaft 21 will rotate around the vertical axis relative to the tank 10.

The second drive means 40 is operative to drive the agitator body 23 in rotation about a transverse axis relative to the agitator shaft 21. In this embodiment, the second driving device 40 includes a power member, a driving shaft 42, a first conical gear 43, and a second conical gear 44. In this embodiment, the power member is a servo motor 41. The driving shaft 42 is inserted into the central hole 211 of the stirring shaft 21, and the driving shaft 42 is arranged coaxially with the stirring shaft 21; the servo motor 41 is fixed on the stirring shaft 21, and the output shaft of the servo motor 41 is connected with the driving shaft 42; the first conical gear 43 is fixed on the outer side of the driving shaft 42, the second conical gear 44 is fixed on the outer side of the first shaft 2311 of the stirring body 23, the first conical gear 43 is meshed with the second conical gear 44, and the first conical gear 43 and the second conical gear 44 are both positioned in the stirring shaft 21. When the servo motor 41 rotates, the stirring body 23 will rotate around the transverse axis under the combined action of the driving shaft 42, the first conical gear 43 and the second conical gear 44. Of course, the forward and reverse rotation of the stirring body 23 can be achieved by controlling the rotation direction of the servo motor 41.

In this embodiment, since the two stirring bodies 23 in the stirring assembly 22 are symmetrically distributed on the stirring shaft 21, the two stirring bodies 23 in the same stirring assembly 22 can share one first bevel gear 43.

The discharging device 50 is positioned at the bottom of the can body 10. In this embodiment, the discharging device 50 includes a motor 51 and a screw rod 52, the screw rod 52 is rotatably connected to the conical body 1112 of the can body 10, a spiral portion of the screw rod 52 extends into the accommodating space 11, one end of the screw rod 52 is inserted into the discharging hole 113, the motor 51 is fixed to the can body 111, and an output shaft of the motor 51 is connected to the screw rod 52.

During the use, sand, stone and cement enter into accommodation space 11 through feed opening in, water pours into from inlet 2121 to finally enter into accommodation space 11, at the water injection in-process, can start first drive arrangement 30, make (mixing) shaft 21 rotate, from liquid outlet 2122 spun hydroenergy enough even spill into accommodation space 11 in, make water and sand, stone, cement can the flash mixed. During the stirring, the first driving device 30 and the second driving device 40 are simultaneously operated. When the first driving device 30 works, the driving motor 31 can drive the stirring shaft 21 to rotate, so that the stirring body 23 rotates around the vertical axis, and the concrete in the accommodating space 11 can roll around the vertical axis, so that the transverse stirring effect is achieved; when the second driving device 40 is operated, the servo motor 41 can drive the driving shaft 42 to rotate, so that the stirring body 23 rotates around the transverse axis relative to the stirring shaft 21, and the concrete in the accommodating space 11 can roll around the transverse axis, thereby achieving the effect of longitudinal stirring. Such a mixing apparatus 100 can mix concrete in two mutually perpendicular directions to sufficiently mix the concrete, thereby mixing the concrete more uniformly. After the concrete in the tank 10 is sufficiently mixed, the discharging device 50 works, and the motor 51 drives the screw rod 52 to rotate, so that the concrete in the accommodating space 11 is discharged from the discharging port 113.

In this embodiment, since the stirring vane 232 of the stirring body 23 is projected in the radial direction of the second shaft 2312, the stirring vane 232 and the second shaft 2312 are disposed at an acute angle. When the servo motor 41 in the second driving device 40 rotates forward, the stirring body 23 rotates forward, and the stirring blade 232 receives axial thrust while stirring, so that the second shaft 2312 moves axially relative to the first shaft 2311 in a direction close to the inner side wall of the tank 10, and in the process, the stirring body 23 pushes the concrete to move transversely. When the second shaft 2312 moves in the direction close to the inner side wall of the pipe body relative to the first shaft 2311 in the axial direction, the contact surface of the stirring blade 232 is finally contacted with the inner side wall of the tank body 10, and the stirring blade 232 rotates to clean the residual concrete on the inner side wall of the lower tank body 10. When the servo motor 41 in the second driving device 40 rotates in the opposite direction, the stirring body 23 rotates in the opposite direction, and the stirring blades 232 receive axial thrust while stirring, so that the second shaft 2312 moves toward the first shaft 2311 in the axial direction close to the stirring shaft 21, and in the process, the stirring body 23 pushes the concrete to move transversely. That is, the second shaft 2312 and the mixing blades 232 can reciprocate by the forward and backward movements of the servo motor 41, thereby further mixing the concrete sufficiently and improving the mixing uniformity.

In this embodiment, the stirring device 20 includes a plurality of stirring assemblies 22 vertically spaced apart from each other on the stirring shaft 21, so that the concrete in the accommodating space 11 can be sufficiently stirred from top to bottom. In other embodiments, the number of stirring assemblies 22 in the stirring device 20 can be one, two or other numbers.

In this embodiment, the stirring assembly 22 includes two stirring bodies 23 symmetrically disposed on two sides of the stirring shaft 21, so as to ensure that the stirring shaft 21 is uniformly stressed during the stirring process. In other embodiments, the number of the stirring bodies 23 in the stirring assembly 22 can be one, two or other numbers.

Example 2

As shown in fig. 9, the present embodiment provides a stirring system 200, and the stirring system 200 includes a water supply device and the stirring apparatus 100 in the above embodiment.

The water supply device includes a water tank 210, a water pump 220, a water supply pipe 230, and a connection sleeve 240. An annular groove 241 is arranged on the inner wall of the connecting sleeve 240, and the inner diameter of the connecting sleeve 240 is matched with the outer diameter of the surrounding body 212. The connecting sleeve 240 is sleeved outside the surrounding body 212, the connecting sleeve 240 is in rotating sealing fit with the surrounding body 212, the liquid inlet hole is communicated with the annular groove 241, the water pump 220 is connected with the connecting sleeve 240 through the water supply pipe 230, the water supply pipe 230 is communicated with the annular groove 241, and the water pump 220 is communicated with the water tank 210.

When the water pump 220 is operated, water in the water tank 210 may sequentially pass through the water pump 220, the water supply pipe 230 and the connection sleeve 240 to enter the liquid feeding passage 213, thereby supplying water into the tank 10. Because the connecting sleeve 240 is sleeved on the surrounding body 212, when the stirring shaft 21 rotates, the connecting sleeve 240 does not rotate along with the stirring shaft 21, so that the water supply device can normally supply water when the stirring shaft 21 rotates.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (9)

1. A mixing apparatus, comprising:

the tank body is internally provided with an accommodating space, the tank body is provided with a feeding hole and a discharging hole, and the feeding hole and the discharging hole are both communicated with the accommodating space;

the stirring device comprises a stirring shaft and at least one stirring assembly, the stirring shaft vertically extends into the accommodating space, the stirring shaft is rotatably connected with the tank body, the stirring shaft can rotate around a vertical axis relative to the tank body, the stirring assembly is positioned in the accommodating space, the stirring assembly comprises at least one stirring body, the stirring body is transversely arranged, the stirring body is rotatably connected with the stirring shaft, and the stirring body can rotate around a transverse axis relative to the stirring shaft;

the first driving device is used for driving the stirring shaft to rotate around the vertical axis relative to the tank body;

the second driving device is used for driving the stirring body to rotate around the transverse axis relative to the stirring shaft;

the stirring body comprises a main shaft and at least one stirring blade;

the main shaft comprises a first shaft and a second shaft which are coaxially arranged, the first shaft is rotationally connected with the stirring shaft, the stirring blade is fixed on the second shaft, the second shaft is movably connected with the first shaft, and the second shaft can axially move relative to the first shaft so as to enable the stirring blade to be close to or far away from the stirring shaft;

a limiting structure is arranged between the first shaft and the second shaft to limit the second shaft to rotate relative to the first shaft.

2. The stirring device according to claim 1, wherein the stirring blades extend in a radial direction of the second shaft, and in a radial projection of the second shaft, the stirring blades are disposed at an acute angle to the second shaft.

3. The blending apparatus of claim 2, wherein the blending blade has a contact surface that is capable of contacting an inner sidewall of the tank when the first shaft is moved relative to the second shaft and the blending blade is moved away from the blending axis.

4. The stirring apparatus as recited in claim 1, wherein the second shaft is provided with an insertion hole, and one end of the first shaft is inserted into the insertion hole;

the limiting structure comprises a clamping portion arranged on the first shaft and a clamping groove formed in the inner wall of the inserting hole, and the clamping portion is clamped in the clamping groove.

5. The mixing apparatus of claim 1, wherein the mixing device comprises a plurality of said mixing assemblies, said plurality of mixing assemblies being vertically spaced apart from said mixing shaft.

6. The stirring device of claim 5, wherein said stirring assembly comprises two stirring bodies symmetrically distributed on both sides of said stirring shaft.

7. The stirring device according to any one of claims 1 to 6, wherein the stirring shaft is internally provided with a central hole;

the second driving device comprises a power part and a driving shaft, the driving shaft is inserted into the central hole, the driving shaft is in transmission connection with the stirring body through a pair of meshed conical gears, and the power part is used for driving the driving shaft to rotate.

8. The mixing apparatus according to any one of claims 1 to 6, wherein the mixing shaft is provided with a surround on the outside, the inner wall of the surround and the outer wall of the mixing shaft defining a liquid feed channel;

the surrounding body is provided with a liquid inlet and a liquid outlet which are communicated with the infusion channel, the liquid inlet is positioned outside the tank body, and the liquid outlet is communicated with the accommodating space.

9. A blending system comprising a water supply and the blending apparatus of claim 8, the water supply being in communication with the liquid inlet.

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