CN210880242U

CN210880242U - Concrete mixing tank

Info

Publication number: CN210880242U
Application number: CN201921300862.0U
Authority: CN
Inventors: 王海龙; 周晓峰; 李铁柱
Original assignee: Sanhe Xinghai Concrete Co ltd
Current assignee: Sanhe Xinghai Concrete Co ltd
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-06-30
Anticipated expiration: 2029-08-12

Abstract

The utility model provides a concrete mixing tank, including the agitator tank that has pan feeding mouth, discharge opening and inlet tube to and the vertical (mixing) shaft that sets up in the agitator tank. The middle part of the stirring tank is provided with an isolation fixed plate, and the stirring tank is divided into a premixing bin and a stirring bin; the isolating fixed plate is provided with a fixed plate feed opening; an isolation movable plate is arranged on the isolation fixed plate, and a transmission mechanism is arranged between the isolation movable plate and the stirring shaft; the isolating movable plate is provided with a movable plate feed opening which can be periodically overlapped with the fixed plate feed opening, so that the materials in the premixing bin can fall to the stirring bin. The stirring shaft comprises a shaft head part, a shaft tail part and a sleeving part; the sleeving part is sleeved with a plurality of stirring group shafts, and stirring sheets and crushing rods are fixedly connected to the stirring group shafts; the driving part of the transmission mechanism is sleeved in the middle of the sleeving part and clamped by the adjacent stirring group shafts. The utility model discloses a concrete mixing tank can realize concrete mixing tank's continuous operation to improve mixing tank's stirring efficiency.

Description

Concrete mixing tank

Technical Field

The utility model relates to a concrete mixing machinery technical field, in particular to concrete mixing jar.

Background

The development of the current society is rapid, and particularly the development of the construction industry is prominent. In the building engineering, concrete is usually used, and the dependence on the use of the concrete is high, so that efficient concrete mixing equipment is always indispensable in the building engineering.

In the existing building engineering, commercial concrete occupies most of the space; however, the need for temporary preparation of concrete at the construction site is also substantial; the existing small and medium-sized concrete mixing equipment for construction sites generally has the problems of poor continuous operation level, low mixing efficiency, poor mixing effect and the like; there is a high necessity for a stirring tank having a good stirring effect and capable of continuously operating and stirring.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a concrete mixing tank to realize the continuous operation of concrete mixing tank, thereby improve the stirring efficiency of agitator tank.

In order to achieve the above purpose, the technical scheme of the utility model is realized like this:

a concrete mixing tank comprises a mixing tank with a feeding opening, a discharging opening and a water inlet pipe, and a mixing shaft which is vertically arranged in the mixing tank and can drive the mixing shaft to rotate;

an isolation fixed plate is fixedly arranged on the inner wall of the middle part of the stirring tank, and the isolation fixed plate divides the interior of the stirring tank into a premixing bin positioned above and a stirring bin positioned below; a fixed plate feed opening is formed in the isolation fixed plate; an isolation movable plate capable of rotating around the axis of the stirring shaft is arranged on the isolation fixed plate, and a transmission mechanism is assembled between the isolation movable plate and the stirring shaft; the isolating movable plate is provided with a movable plate feed opening; under the rotation drive of the stirring shaft, the movable plate feed opening can be periodically superposed with the fixed plate feed opening, so that the materials in the premixing bin can fall into the stirring bin;

the stirring shaft comprises a shaft head part and a shaft tail part which are positioned at two ends of the stirring shaft, and a sleeving part positioned between the shaft head part and the shaft tail part; a plurality of stirring group shafts which are coaxial with the stirring shaft and synchronously rotate are sleeved, locked and fixed on the sleeving part, and the peripheral side wall of each stirring group shaft is fixedly connected with a stirring sheet and a crushing rod; the driving part of the transmission mechanism is sleeved in the middle of the sleeving part and clamped by the adjacent stirring group shafts.

Furthermore, the transmission mechanism adopts a planet wheel structure; the sun wheel of the planet wheel forms the driving part; the lower part of the isolation movable plate is provided with a gear ring, and a planet wheel is arranged between the sun wheel and the gear ring.

Further, a scraping plate is fixedly arranged on the lower surface of the isolation movable plate and is positioned on one side of the movable plate feed opening; the scraper plate can scrape the materials between the isolation movable plate and the isolation fixed plate to the blanking port of the fixed plate along with the rotation of the isolation movable plate.

Furthermore, a blocking ring fixed on the inner wall of the stirring tank is arranged above the peripheral edge of the isolation movable plate.

Furthermore, the stirring sheet is plate-shaped and is fixedly connected to the stirring group shaft through a connecting rod orthogonal to the stirring group shaft; the stirring sheet and the connecting rod which are connected are arranged in the same plane.

Furthermore, an included angle of 30-45 degrees is formed between the plane where the stirring sheets are located and the plane perpendicular to the axis of the stirring group shaft.

Furthermore, the side edge of the stirring sheet close to the inner wall of the stirring tank is arc-shaped.

Furthermore, the stirring group shaft is fixedly connected with four stirring sheets and four connecting rods; the four connecting rods are in a group in pairs, the two connecting rods in the same group and the stirring sheets connected with the connecting rods are in central symmetry relative to the axis, and the two groups of connecting rods are respectively close to two ends of the stirring group shaft.

Furthermore, the stirring group shaft is fixedly connected with two crushing rods, and the two crushing rods and the stirring group shaft are orthogonally arranged in the middle of the stirring group shaft and are symmetrical relative to the axis center.

Furthermore, the stirring group shaft is also provided with two helical blades, and the two helical blades spirally extend around the stirring group shaft along the axis direction and are fixedly connected with one of the connecting rods and one of the two crushing rods of each group respectively.

Compared with the prior art, the utility model discloses following advantage has:

the concrete mixing tank of the utility model adopts the arrangement of the upper and lower divided cavities of the premixing bin and the mixing bin, so that materials such as cement aggregate entering the mixing tank can be mixed firstly, and the mixed materials can continuously fall into the mixing bin to be added with water for mixing under the driving of the rotation of the stirring shaft on the isolation movable plate, thereby the concrete mixing tank can stir and process concrete under the continuous operation, and the improvement of the mixing efficiency is facilitated; meanwhile, the stirring assembly adopts a combined structure form, so that the stirring component is convenient to maintain and replace when damaged

This drive mechanism adopts the planet wheel structure to realize the (mixing) shaft to the speed reduction transmission of keeping apart the movable plate in the agitator tank, can make in the storehouse in advance the material obtain abundant mixing time to do benefit to the promotion of total stirring effect. The scraper plate on the isolation movable plate can timely remove materials retained between the isolation movable plate and the isolation fixed plate, and the operation stability of the stirring tank is facilitated.

In addition, the stirring shaft is provided with a plate-shaped stirring sheet which is fixedly connected to the connecting rod, so that an included angle does not exist between the stirring sheet and the connecting rod, and the stirring sheet can have a larger stirring working surface to improve the stirring effect; the stirring sheet is at a certain inclination angle on the vertical section of the axis, so that the rotating resistance of the stirring shaft can be reduced, and the stirring effect of stirring the stirred concrete can be achieved.

Drawings

The accompanying drawings, which form a part of the present disclosure, are provided to provide a further understanding of the present disclosure, and the exemplary embodiments and descriptions thereof are provided to explain the present disclosure, wherein the related terms in the front, back, up, down, and the like are only used to represent relative positional relationships, and do not constitute an undue limitation of the present disclosure. In the drawings:

FIG. 1 is a schematic diagram of an overall cross-sectional structure of a concrete mixing tank according to an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion A of FIG. 1;

FIG. 3 is a schematic cross-sectional view taken at the viewing angle B in FIG. 2;

fig. 4 is a schematic structural diagram of a planetary gear transmission mechanism according to an embodiment of the present invention;

FIG. 5 is a schematic perspective view of the stirring shaft in the embodiment of the present invention;

fig. 6 is a schematic perspective view of a stirring shaft assembly according to an embodiment of the present invention;

FIG. 7 is a schematic view of the agitator assembly shaft of FIG. 6, taken from an axial perspective thereof;

description of reference numerals:

1-stirring tank, 100-fixed plate feed opening, 101-isolation fixed plate, 1011-bearing lower groove, 102-premixing bin, 103-stirring bin, 104-shielding ring, 105-tank bottom and 106-tank cover;

2-a feeding port, 3-a discharging port, 301-a discharging valve, 4-a speed reducer, 5-a motor, 6-a water inlet valve, 601-a water inlet pipe, 602-a water spray head;

7-stirring shaft, 70-sleeving part, 700-locking thread, 701-locking nut, 702-shaft tail part, 703-tail stirring blade, 8-stirring shaft, 801-stirring blade, 802-connecting rod, 803-crushing rod and 804-helical blade;

9-an isolation movable plate, 900-a movable plate feed opening, 901-a thrust bearing, 9011-a bearing upper groove, 9012-a retainer, 902-a planet wheel, 9021-a planet carrier, 903-a sun wheel, 904-a gear ring and 905-a scraper.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.

The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

The embodiment relates to a concrete mixing tank, which can realize the continuous operation of the concrete mixing tank, thereby improving the mixing efficiency of the device and facilitating the maintenance and replacement of the mixing component when damaged. This concrete mixing tank, including the agitator tank that has pan feeding mouth, discharge opening and inlet tube to and vertical set up in the agitator tank and can drive rotatory (mixing) shaft. An isolation fixed plate is fixedly arranged on the inner wall of the middle part of the stirring tank, and the isolation fixed plate divides the interior of the stirring tank into a premixing bin positioned above and a stirring bin positioned below; a fixed plate feed opening is formed in the isolation fixed plate; an isolation movable plate capable of rotating around the axis of the stirring shaft is arranged on the isolation fixed plate, and a transmission mechanism is assembled between the isolation movable plate and the stirring shaft; the isolating movable plate is provided with a movable plate feed opening; under the rotation drive of the stirring shaft, the movable plate feed opening can be periodically superposed with the fixed plate feed opening, so that the materials in the premixing bin can fall into the stirring bin; the stirring shaft comprises a shaft head part and a shaft tail part which are positioned at two ends of the stirring shaft, and a sleeving part positioned between the shaft head part and the shaft tail part; a plurality of stirring group shafts which are coaxial with the stirring shaft and synchronously rotate are sleeved, locked and fixed on the sleeving part, and the peripheral side wall of each stirring group shaft is fixedly connected with a stirring sheet and a crushing rod; the driving part of the transmission mechanism is sleeved in the middle of the sleeving part and clamped by the adjacent stirring group shafts.

Based on the general structural principle, an exemplary structure of the concrete mixing tank of the present embodiment is shown in fig. 1, and mainly includes a mixing chamber 1 having a feeding port 2, a discharging port 3 and a water inlet pipe 601, and a mixing shaft 7 vertically disposed in the mixing chamber 1 and capable of driving rotation.

Specifically, the device comprises a stirring cavity 1, a speed reducer 4 and a motor 5. A feeding port 2, a discharging port 3 and a water inlet pipe 601 are arranged on the stirring cavity 1, and a stirring shaft 7 is arranged in the stirring cavity 1.

In this embodiment, the stirring chamber 1 is a vertical stirring tank, the speed reducer 4 and the motor 5 are installed above the tank, and the head of the stirring shaft 7 penetrates the top of the tank and is installed in the speed reducer 4, so that the stirring shaft 7 can rotate under the driving of the motor 5. The feeding port 2 is arranged on one side of the upper part of the tank body and is used for feeding cement and gravel aggregate; the speed reducer 4 is arranged between the motor 5 and the shaft head part of the stirring shaft 7 in a transmission manner to realize speed reduction transmission. The water inlet pipe 601 can introduce water to be mixed with cement sand; as shown in fig. 1, the water inlet pipe 601 penetrates through the outer wall of the stirring chamber 1 and enters the stirring chamber 103 inside the stirring chamber 1, a water spray head 602 may be installed at the end of the water inlet pipe 601 inside the stirring chamber 1 to spray the entering water uniformly, and a water inlet valve 6 may be installed on the water inlet pipe 601 to control the addition of water. Preferably, the water spray head 602 of the water inlet pipe 601 is located in the stirring bin 103 and is close to the lower surface of the isolation fixed plate 101 and is far away from the fixed plate feed opening 100.

Finally, discharging the concrete formed by stirring from a discharge opening 3 at the bottom of the tank body; a discharge valve 301 may be installed at the discharge port 3.

As shown in fig. 1 and fig. 2, an isolation fixed plate 101 is fixedly disposed on an inner wall of the middle portion of the stirring cavity 1, and the isolation fixed plate 101 divides the inside of the stirring cavity 1 into a premixing bin 102 located above and a stirring bin 103 located below; the isolation fixed plate 101 is provided with a fixed plate feed opening 100. An isolation movable plate 9 which can rotate around the axis of the stirring shaft 7 is arranged on the isolation fixed plate 101, and a transmission mechanism is arranged between the isolation movable plate 9 and the stirring shaft 7; a movable plate feed opening 900 is formed in the isolation movable plate 9; under the rotation driving of the stirring shaft 7, the movable plate feed opening 900 can be periodically overlapped with the fixed plate feed opening 100, so that the materials in the premixing bin 102 can fall into the stirring bin 103. In order to make the isolation moving plate 9 rotate smoothly on the isolation fixed plate 101, as shown in fig. 2, a thrust bearing 901 may be provided between the two, and the high balls of the thrust bearing 901 are fixed by a retainer 9012; the thrust bearing 901 is held between a lower bearing groove 1011 formed in the upper surface of the fixed isolation plate 101 and an upper bearing groove 9011 formed in the lower surface of the movable isolation plate 9, so that the movable isolation plate 9 is supported on the fixed isolation plate 101 and can smoothly rotate with respect to the fixed isolation plate 101.

As described above, the isolation moving plate 9 is driven by the rotation of the stirring shaft 7, so as to realize speed reduction transmission, the materials in the pre-mixing bin 102 can obtain sufficient mixing time, so as to facilitate the improvement of the overall stirring effect, as shown in fig. 2, 3 and 4, in this embodiment, the transmission mechanism adopts a planetary wheel structure; the sun gear 903 of the planet gear is fixedly sleeved on the stirring shaft 7, the lower part of the isolation moving plate 9 is provided with a gear ring 904, and the planet gear 902 is arranged between the sun gear 903 and the gear ring 904. Due to the design, the rotating speed of the isolating movable plate 9 can be flexibly determined, and the transmission ratio from the stirring shaft 7 to the isolating movable plate 9 can be changed in a large range through the arrangement of the tooth number of the transmission gear, so that the mixing time of the materials in the premixing bin 102 is prolonged.

As shown in fig. 4, during the transmission, the stirring shaft 7 rotates to drive the sun gear 903 fixed on the stirring shaft to rotate, the number of the planet gears 902 between the sun gear 903 and the ring gear 904 is generally four, and the four planet gears 902 are connected into a whole through the planet carrier 9021 to maintain the relative positions of the four planet gears 902.

As shown in fig. 2, a scraper plate 905 is fixedly mounted on the lower surface of the movable isolation plate 9, and the scraper plate 905 is located on one side of the movable plate feed opening 900; the scraper plate 905 scrapes the material between the movable isolation plate 9 and the fixed isolation plate 101 to the fixed plate feed opening 100 along with the rotation of the movable isolation plate 9. Therefore, the materials retained between the isolation movable plate 9 and the isolation fixed plate 101 can be removed in time, and the operation stability of the device is facilitated. In order to prevent the gap between the isolation plate 9 and the inner wall of the stirring chamber 1 from being blocked by the material and thereby affecting the rotation of the isolation plate 9, a blocking ring 104 fixed on the inner wall of the stirring chamber 1 is provided above the outer peripheral edge of the isolation plate 9.

Considering the problem of installing the stirring shaft 7 and the isolation moving plate 9 in the stirring chamber 1, the stirring chamber 1 may be designed as a split structure having a chamber bottom 105 and a chamber cover 106, as shown in fig. 1.

As shown in fig. 5 in conjunction with fig. 6, in order to facilitate the installation of the isolation moving plate 9 and the isolation fixing plate 101 and further facilitate the replacement and maintenance of the damaged stirring components, in the present embodiment, the stirring shaft 7 has a sleeving part 70, and the sleeving part 70 is in a non-rotating body shape, that is, the sleeving part 70 is in a non-circular shape in a cross section perpendicular to the sleeving part 70; in this embodiment, the cross-section of the nesting portion 70 is square.

The shaft tail part 702 is fixedly connected with the sleeving part 70 integrally, the radial dimension of the shaft tail part 702 is larger than the side length dimension of the square cross section of the sleeving part 70, preferably, two tail stirring blades 703 are fixedly connected to the peripheral side wall of the shaft tail part 702, the two tail stirring blades 703 are centrosymmetric relative to the axis of the stirring shaft 7, the tail stirring blades 703 are preferably of a plate-shaped structure, a certain inclination angle is arranged between the plane where the plate is located and the plane perpendicular to the axis of the stirring shaft 7, and preferably, the inclination angle is 30-45 degrees. The edge of the tail stirring blade 703 close to the inner wall of the stirring cavity 1 is arc-shaped so as to fit with the inner wall of the stirring cavity 1.

A plurality of stirring group shafts 8 playing a main stirring role are sleeved on the sleeving part 70, the axial line part of each stirring group shaft 8 is provided with 800 which penetrates through the stirring group shaft 8, and the 800 is matched with the shape of the sleeving part 70 on the vertical section of the axial line of the stirring shaft 7, so that the stirring group shafts 8 and the stirring shaft 7 can coaxially and synchronously rotate; and the peripheral side wall of the stirring group shaft 8 is fixedly connected with a stirring sheet 801 and a crushing rod 803 so as to stir cement and crush agglomerates in the material.

After the stirring shafts 8 are sleeved on the stirring shaft 7, the locking nut 701 is screwed on the locking thread 700 at the head of the stirring shaft, and each stirring shaft 8 sleeved on the sleeving part 70 can be locked on the stirring shaft 7. It should be noted that, in this embodiment, there are two stirring assembly shafts 8, and the sun gear 903 of the planetary gear is sleeved in the middle of the sleeving part 70 and is clamped by the two stirring assembly shafts 8.

As shown in fig. 6, the stirring plate 801 is plate-shaped and is fixedly connected to the stirring shaft 8 through a connecting rod 802 orthogonal to the stirring shaft 8; the connected stirring blades 801 and the connecting rods 802 are arranged in the same plane. The stirring sheet 801 is fixedly connected to the connecting rod 802, so that an included angle does not exist between the stirring sheet 801 and the connecting rod 802, and the stirring sheet 801 can have a large stirring working surface to improve the stirring effect.

Similar to the trailing stirring blades 703, the stirring blades 801 are disposed in a plane that is at an angle of 30 ° to 45 °, preferably 30 °, to a plane perpendicular to the axis of the stirring shaft 8. Thus, the resistance of the rotation of the stirring shaft 7 can be reduced, and the stirring effect of stirring the stirred concrete can be achieved. In order to make the side edge of the stirring plate 801 close to the inner wall of the stirring cavity 1 more fit with the inner wall of the stirring cavity 1, the side edge may be arc-shaped.

The shape of the crushing rod 803 may be designed to be cylindrical or rectangular parallelepiped, and in this embodiment, the crushing rod 803 has a conical shape.

The number of the stirring blades 801 and the number of the crushing rods 803 arranged on the stirring group shaft 8 can be flexibly determined according to needs, and in the embodiment, as shown in fig. 6, four stirring blades 801 and four connecting rods 802 are fixedly connected to the stirring group shaft 8; the four connecting rods 802 are in a group, two connecting rods 802 in the same group and the stirring sheets 801 connected with the two connecting rods 802 are in central symmetry relative to the axis, and the two groups of connecting rods 802 are respectively arranged close to two ends of the stirring group shaft 8. Meanwhile, the stirring shaft assembly 8 is fixedly connected with two crushing rods 803, and the two crushing rods 803 and the stirring shaft assembly 8 are orthogonally arranged in the middle of the stirring shaft assembly 8 and are symmetrical relative to the axis center.

The mutual position relationship between the stirring blades 801 and the crushing rods 803 is based on the principle of achieving uniform arrangement and good stirring of the two, and preferably, two sets of connecting rods 802 on the same stirring group shaft 8 are perpendicular to each other and form an included angle of 45 degrees with the crushing rods 803 on the same stirring group shaft 8, as shown in fig. 6 and 7.

In addition, in order to further improve the stirring effect of the stirring mechanism, two helical blades 804 are further disposed on the stirring shaft 8, and the two helical blades 804 spirally extend around the stirring shaft 8 along the axial direction and are respectively and fixedly connected to one of the connecting rods 802 and one of the two crushing rods 803. Preferably, the helical blade 804 is connected between the connecting rod 802 and the crushing rod 803 at an included angle of 135 °.

The concrete mixing tank described in this embodiment, through a plurality of stirring group axle 8 of suit on (mixing) shaft 7, make concrete mixing tank have good concrete and mix the effect to the condition that the stirring part appears damaging in the use can be handled through the mode of changing a single stirring group axle 8 fast, thereby reduce the influence of concrete mixing tank maintenance to production. Simultaneously, this agitator tank adopts the setting in two minutes chambeies about premixing storehouse 102 and the stirring storehouse 103, makes materials such as cement aggregate that get into in agitator tank 1 mix earlier to can be under the (mixing) shaft 7 rotates the driving about to keep apart movable plate 9, make the material after mixing fall into the stirring storehouse 103 with water stirring in succession, thereby make the concrete agitator tank can carry out the stirring processing of concrete under continuous operation, do benefit to the improvement of stirring efficiency.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A concrete mixing tank comprises a mixing tank (1) with a feeding port (2), a discharging port (3) and a water inlet pipe (601), and a mixing shaft (7) which is vertically arranged in the mixing tank (1) and can drive to rotate; the method is characterized in that:

an isolation fixed plate (101) is fixedly arranged on the inner wall of the middle part of the stirring tank (1), and the isolation fixed plate (101) divides the interior of the stirring tank (1) into a premixing bin (102) positioned above and a stirring bin (103) positioned below; a fixed plate feed opening (100) is formed in the isolation fixed plate (101); an isolation movable plate (9) capable of rotating around the axis of the stirring shaft (7) is arranged on the isolation fixed plate (101), and a transmission mechanism is arranged between the isolation movable plate (9) and the stirring shaft (7); a movable plate feed opening (900) is formed in the isolating movable plate (9); under the rotation drive of the stirring shaft (7), the movable plate feed opening (900) can be periodically overlapped with the fixed plate feed opening (100), so that the materials in the premixing bin (102) can fall into the stirring bin (103);

the stirring shaft (7) comprises a shaft head part and a shaft tail part (702) which are positioned at two ends of the stirring shaft (7), and a sleeving part (70) which is positioned between the shaft head part and the shaft tail part (702); a plurality of stirring assembly shafts (8) which are coaxial with the stirring shaft (7) and synchronously rotate are sleeved, locked and fixed on the sleeving part (70), and stirring blades (801) and crushing rods (803) are fixedly connected to the peripheral side wall of each stirring assembly shaft (8); the driving part of the transmission mechanism is sleeved in the middle of the sleeving part (70) and clamped by the adjacent stirring group shafts (8).

2. The concrete mixing tank of claim 1, wherein: the transmission mechanism adopts a planet wheel structure; the sun gear (903) of the planet gear forms the driving part; the lower part of the isolation moving plate (9) is provided with a gear ring (904), and a planet gear (902) is arranged between the sun gear (903) and the gear ring (904).

3. The concrete mixing tank of claim 2, wherein: a scraping plate (905) is fixedly arranged on the lower surface of the isolating movable plate (9), and the scraping plate (905) is positioned on one side of the movable plate feed opening (900); the scraping plate (905) can scrape the materials between the isolation movable plate (9) and the isolation fixed plate (101) to the fixed plate feed opening (100) along with the rotation of the isolation movable plate (9).

4. The concrete mixing tank of claim 3, wherein: and a blocking ring (104) fixed on the inner wall of the stirring tank (1) is arranged above the peripheral edge of the isolation movable plate (9).

5. The concrete mixing tank of claim 1, wherein: the stirring sheet (801) is plate-shaped and is fixedly connected to the stirring group shaft (8) through a connecting rod (802) which is orthogonal to the stirring group shaft (8); the connected stirring sheet (801) and the connecting rod (802) are arranged in the same plane.

6. The concrete mixing tank of claim 5, wherein: an included angle of 30-45 degrees is formed between the plane where the stirring sheets (801) are located and the plane perpendicular to the axis of the stirring group shaft (8).

7. The concrete mixing tank of claim 6, wherein: the side edge of the stirring sheet (801) close to the inner wall of the stirring tank (1) is arc-shaped.

8. A concrete mixing tank according to any one of claims 1-7, characterized in that: the stirring group shaft (8) is fixedly connected with four stirring blades (801) and four connecting rods (802); the four connecting rods (802) are in a group of two by two, the same group of two connecting rods (802) and the stirring sheets (801) connected with the same connecting rods are centrosymmetric relative to the axis, and the two groups of connecting rods (802) are respectively close to two ends of the stirring group shaft (8).

9. The concrete mixing tank of claim 8, wherein: the stirring group shaft (8) is fixedly connected with two crushing rods (803), and the two crushing rods (803) and the stirring group shaft (8) are orthogonally arranged in the middle of the stirring group shaft (8) and are opposite to each other in axial line central symmetry.

10. The concrete mixing tank of claim 9, wherein: the stirring shaft assembly (8) is further provided with two helical blades (804), and the two helical blades (804) spirally extend around the stirring shaft assembly (8) along the axis direction and are fixedly connected with one of the connecting rods (802) and one of the two crushing rods (803) respectively.