An iron ore-based radiation-proof heavy concrete mixing device and mixing method

Abstract

The application discloses an iron ore radiation-proof heavy concrete stirring device and stirring method, and relates to the technical field of iron ore radiation-proof heavy concrete stirring. It comprises a stirring tank, a feeding pipe taper, a conical hopper and a feeding mechanism. The stirring tank is connected with the feeding pipe through the conical hopper. The stirring blade is rotatably installed in the feeding pipe. The stirring fan is rotatably installed at the connection between the stirring tank and the conical hopper. The feeding mechanism is arranged on the side of the stirring tank far from the feeding pipe and penetrates the side wall of the stirring tank. The motor is controlled to drive the stirring blade, the stirring fan and the feeding mechanism to rotate, so that the mixing, stirring and discharging of raw materials are completed. The raw materials can be extruded and broken in the feeding pipe, the mixing and stirring intensity of the stirring fan on the raw materials is reduced, the raw materials are progressively stirred, the raw materials and clean water are fully mixed, and the unbroken lumps are blocked in the inside of the stirring tank to be continuously stirred and broken.

Description

Technical Field

[0001] This invention relates to the field of iron ore radiation-proof heavy concrete mixing technology, specifically to a mixing device and mixing method for iron ore radiation-proof heavy concrete. Background Technology

[0002] To prevent various types of radiation from harming the human body, radiation shielding materials are generally required when constructing buildings with radiation sources. Concrete is the basic material for radiation shielding of the main building structure and is mainly used in educational, scientific research, and medical institutions with radiation sources, as well as for the inner and outer shells of nuclear reactors. Therefore, radiation shielding through the basic materials of the main building structure is the most basic construction method.

[0003] Existing mixing devices for radiation-proof heavy concrete based on iron ore cannot pre-treat lumps and large particles in the raw materials, which easily causes the large mixing fan to suffer direct wear and shorten its service life. In traditional mixing devices, the clean water accumulates directly at the bottom of the mixing tank, which can easily lead to increased mixing resistance of the large mixing fan, and there is a risk of local deformation and breakage of the large mixing fan. It is impossible to provide progressive mixing of raw materials, and it is impossible to achieve full mixing of raw materials and clean water. It is also impossible to automatically transport the concrete while keeping the lumps blocked inside the mixing tank for continued mixing.

[0004] A search revealed Chinese patent application number 202111002479.9, filed on August 9, 2020, entitled "A Mixing Method for a Concrete Mixer for Laboratory Testing." The mixer disclosed in this application includes a base with two symmetrically arranged support pillars fixed to its upper end. Each support pillar is connected to a mounting platform via a lifting rod. A motor, a measuring cylinder, and a weighing cylinder are fixed to the upper end of the mounting platform. The motor's output shaft passes through the mounting platform and is fixed to a rotating shaft. Starting the motor drives the rotating shaft, rotating rod, and rotating plate to rotate, causing the mixing rod to rotate and stir. The rotating plate, through starting blocks at both ends, allows two material delivery pipes to circulate and add raw materials, ensuring uniform mixing. Under the action of the adsorption blocks, the mixing rod alternately appears in the inner and outer rings to complete radial mixing, achieving comprehensive mixing. This application optimizes the structure of the mixing equipment and improves the uniformity of mixing by controlling the feeding of small amounts of material multiple times. However, the overall structure of the equipment is relatively complex and its functions are limited. It is suitable for making concrete in the laboratory using fine sand and gravel, but it is very easy to clog the material discharge hole when using coarser sand and gravel on the construction site, making it unusable. Summary of the Invention

[0005] 1. The problem to be solved

[0006] In view of the shortcomings of existing concrete mixing devices mentioned in the background art, the present invention provides a mixing device and mixing method for radiation-proof heavy concrete based on iron ore, which effectively extends the service life of the mixing device and improves the uniformity of raw material mixing.

[0007] 2. Technical Solution

[0008] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0009] This invention discloses a mixing device for radiation-shielding heavy concrete based on iron ore, comprising a mixing tank and a feed pipe, as well as a conical hopper and a feeding mechanism. The mixing tank is connected to the feed pipe via the conical hopper. The rear end of the mixing tank is connected to the larger diameter end of the conical hopper, and the smaller diameter end of the conical hopper is connected to the discharge port of the feed pipe. Specifically, the mixing device of this invention features rotatable mixing blades mounted inside the feed pipe, and a rotatable mixing fan mounted at the connection between the mixing tank and the conical hopper. The mixing blades in this invention pre-crush the material, improving the uniformity of material mixing and reducing wear on the mixing fan from lumps or large particles in the raw materials, thus reducing deformation and wear of the mixing fan and further improving the uniformity of the heavy concrete mixing. Furthermore, the mixing device of this invention has a feeding mechanism installed on the side of the mixing tank away from the feed pipe, i.e., at the front end of the mixing tank. The feeding mechanism penetrates the side wall of the mixing tank and is used to discharge the uniformly mixed concrete.

[0010] Furthermore, the diameter of the conical hopper's inlet is smaller than its outlet, the diameter of the inlet of the feed pipe matches the diameter of the conical hopper's inlet, and the diameter of the mixing tank's inlet matches the diameter of the conical hopper's outlet. This invention optimizes the installation method of the conical hopper. By controlling its inlet diameter to be smaller than its outlet diameter, it improves the crushing effect of large particles during concrete mixing, especially for heavy-duty iron ore radiation-proof concrete, and facilitates material movement into the mixing tank.

[0011] The mixing tank is equipped with a motor, the output end of which is fixedly connected to a rotating shaft. A mixing fan and a mixing blade are fixedly installed on the rotating shaft in sequence. The operation of the mixing device can be realized by rotating the motor, which facilitates the automated mixing of concrete.

[0012] Furthermore, a long shaft sleeve is fitted onto the rotating shaft, located at the overlap between the rotating shaft and the mixing tank. This prevents the connection between the rotating shaft and the motor from directly contacting the concrete raw materials, thus providing protection and isolation. Additionally, the mixing fans are fixedly mounted on the rotating shaft in a circular array, and the mixing blades are fixedly mounted on the rotating shaft in a spiral array. Optimizing the installation method of the mixing blades and fans improves the mixing effect and enables progressive discharge of raw materials from the mixer, contributing to improved uniformity in heavy concrete mixing.

[0013] Furthermore, an arc-shaped plate is fixedly connected to the motor, and the motor is bolted to the mixing tank through the arc-shaped plate and the screw.

[0014] Furthermore, the feeding mechanism includes a cylindrical tube, which is rotatably mounted on the side wall of the mixing tank via a hoop. The inner side of the cylindrical tube is fixedly connected in a circular array with an inner dividing plate and an outer scraper. An internal annular plate is also provided between the inner dividing plate and the outer scraper. The internal annular plate is fixedly connected to the inner wall of the cylindrical tube and is used to prevent the raw materials from flowing out directly. The inner dividing plate filters the mixed concrete, and the outer scraper performs spiral scraping.

[0015] Furthermore, the end of the cylindrical tube located inside the mixing tank is provided with wall teeth. The gear is rotatably mounted on the mixing tank via a shaft, and the gear meshes with the wall teeth. The shaft is connected to the motor output end via a belt. With this structural design, only one motor is needed to complete feeding, mixing and discharging. The device has a simple structure, is easy to operate, and has low manufacturing cost.

[0016] Furthermore, the inner wall of the mixing tank is equipped with a protective cover to protect the gears and wall teeth, avoid the impact of concrete material on the gears and wall teeth during the discharge process, and reduce the wear, maintenance and replacement of parts.

[0017] Furthermore, it also includes lifting legs. Lifting legs are symmetrically connected to both sides of the mixing tank, and the bottom of the feed pipe and the conical hopper are also fixedly connected to lifting legs to meet the usage needs of different construction sites. Each lifting leg is equipped with a pulley at the bottom for easy movement of the device.

[0018] The present invention provides a mixing method for radiation-shielding heavy concrete based on iron ore, which uses the above-mentioned mixing device for mixing and includes the following steps:

[0019] Step 1: During feeding, the material is pre-crushed inside the feed pipe;

[0020] Step 2: Thoroughly mix the mixture in the conical hopper and at the feed inlet of the mixing tank, and finally discharge it through the feeding mechanism.

[0021] Furthermore, specifically, it includes the following steps

[0022] In step one, the motor is controlled to rotate, which in turn controls the rotation of the mixing fan and mixing blades. The mixing blades crush and pre-treat large particles or lumps in the raw materials, and the material is discharged through a screw conveyor.

[0023] In step two, the raw materials moving into the conical hopper are thoroughly stirred and mixed by the mixing fan. At the same time, some of the concrete that has not been completely broken up is blocked inside the mixing tank and continues to be stirred, while the concrete that has been stirred to a uniform particle size is filtered and output.

[0024] 3. Beneficial effects

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] (1) The present invention provides a mixing device for radiation-proof heavy concrete based on iron ore. By setting a mixing blade in the feed pipe, the feed pipe provides a window for feeding materials. At the same time, the narrow space inside the feed pipe guides the raw materials while coarsely mixing them. The mixing blade and the feed pipe work together to squeeze and roll the raw materials at close range, breaking up large particles or lumps in the raw materials in advance. This reduces the mixing intensity of the mixing fan on the raw materials, achieves pretreatment of lumps and large particles in the raw materials, reduces the wear of the mixing fan, and extends the service life of the mixing fan.

[0027] (2) A mixing device for radiation-proof heavy concrete based on iron ore according to the present invention, wherein the size of the mixing blade is smaller than that of the mixing fan, and the mixing blade is spirally installed in the feed pipe. The mixing blade facilitates the spiral conveying and crushing of the raw material, and lengthens the path of mixing of clean water and raw material. This avoids the clean water from accumulating directly at the bottom of the mixing tank in traditional mixing devices, which would lead to the mixing resistance of the mixing fan. The mixing device of the present invention, through the combination of mixing blade and mixing fan, can provide progressive mixing of raw material, achieve full mixing of raw material and clean water, and is not prone to clumping.

[0028] (3) The present invention provides a mixing device for radiation-proof heavy concrete based on iron ore. The device drives the gear on the shaft to mesh with the wall teeth through the motor, and drives the cylinder to rotate at the front end of the mixing tank. Through the inner plate, the built-in ring plate, and the outer scraper, the concrete is filtered, blocked, and spirally scraped. The lumps that have not been completely broken can be blocked inside the mixing tank and continue to be mixed and broken. The concrete that has been mixed to a uniform particle size is filtered and output. The device can automatically intercept raw materials that have not been broken and mixed sufficiently.

[0029] (4) The present invention provides a mixing device for radiation-proof heavy concrete based on iron ore. By designing lifting legs to provide stable support for the mixing device as a whole, the device can be made more flexible by using pulleys installed at the bottom of the lifting legs, making it easy to move and transport. In addition, the mixing device can be positioned and used by blocking bricks on both sides of the pulleys, which is very convenient.

[0030] (5) The present invention provides a mixing method for radiation-proof heavy concrete based on iron ore. The mixing device of the present invention is used to control the operation of the motor to realize the production of concrete. It is especially suitable for the production of concrete with large particles in the raw materials. The mixing and discharge are automatic, the operation is simple, the mixing effect is good, the wear of the mixing fan is significantly reduced, and the construction cost is reduced. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the external structure of a mixing device for radiation-proof heavy concrete based on iron ore according to the present invention.

[0032] Figure 2 This is a schematic diagram of the internal structure of the mixing tank of the present invention;

[0033] Figure 3 This is a schematic diagram of the structure of the mixing tank and the feeding mechanism of the present invention;

[0034] Figure 4 This is a schematic diagram of the structure of the large stirring fan and small stirring blade of the present invention;

[0035] Figure 5 This is a schematic diagram of the feeding mechanism of the present invention;

[0036] Figure 6 This is a schematic diagram of the structure of the inner partition plate and wall teeth of the present invention;

[0037] Figure 7 This is a schematic diagram of the conical bucket structure of the present invention.

[0038] In the picture:

[0039] 1. Mixing tank; 2. Feed pipe; 3. Lifting leg; 4. Motor; 5. Shaft;

[0040] 6. Feeding mechanism; 61. Cylindrical tube; 62. Inner dividing plate; 63. Protective cover; 64. Wall teeth; 65. Gear; 66. Outer scraper; 67. Hoop ring;

[0041] 7. Agitator fan; 8. Agitator blade; 9. Conical hopper; 10. Long shaft cylinder. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention.

[0043] It should be noted that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to facilitate the description of the present invention and to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of the present invention.

[0044] In the description of the invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0045] The present invention will be further described below with reference to specific embodiments.

[0046] Example 1

[0047] like Figure 1 and Figure 7 As shown, the present invention discloses a mixing device for radiation-proof heavy concrete based on iron ore, comprising a mixing tank 1 and a feed pipe 2. A conical hopper 9 is connected to the rear end of the mixing tank 1, and the feed pipe 2 is connected to the rear end of the mixing tank 1 via the conical hopper 9; that is, the front end of the feed pipe 2 is connected to the conical hopper 9. The inner side of the mixing tank 1 is connected to the inner side of the conical hopper 9 and the inner side of the feed pipe 2, and the mixing tank 1, the conical hopper 9, and the feed pipe 2 are connected as a single unit. A feeding mechanism 6 for discharging material is provided at the front end of the mixing tank 1, and a feed inlet is provided at the rear end of the feed pipe 2, which is connected to a feeding device.

[0048] like Figure 1 , Figure 2 and Figure 4As shown, a stirring blade 8 is rotatably installed inside the feed pipe 2 of the present invention, and a stirring fan 7 is rotatably installed at the connection between the mixing tank 1 and the conical hopper 9. The diameter of the feed inlet of the conical hopper 9 is smaller than its discharge outlet. The diameter of the discharge outlet of the feed pipe 2 matches the diameter of the feed inlet of the conical hopper 9, and the diameter of the feed inlet of the mixing tank 1 matches the diameter of the discharge outlet of the conical hopper 9. The size of the stirring blade 8 is smaller than the size of the stirring fan 7. The stirring blade 8 is used to pre-crush the raw materials inside the feed pipe 2, and the stirring fan 7 is used to fully mix the concrete raw materials, thereby preparing radiation-resistant heavy concrete based on iron ore.

[0049] As a further improvement to this embodiment, a motor 4 is provided at the front end of the mixing tank 1. More optimally, an arc-shaped plate is fixedly connected to the outer shell of the motor 4. The motor 4 is bolted to the mixing tank 1 through the arc-shaped plate and a screw, providing a detachable connection that facilitates the installation and removal of the motor 4. Figure 1 and Figure 4 As shown, the output shaft of motor 4 is fixedly connected to the rotating shaft. Most of the rotating shaft is inserted into the mixing tank 1 and the feed pipe 2. A long shaft sleeve 10 is provided on the rotating shaft near the output end of motor 4. The rotating shaft is rotatably mounted to the mixing tank 1 through the long shaft sleeve 10. The long shaft sleeve 10 penetrates the side wall of the mixing tank 1 and is located at the point where the rotating shaft overlaps with the mixing tank 1. The long shaft sleeve 10 prevents the connection between the rotating shaft and motor 4 from directly contacting the concrete raw materials, thus providing protection and isolation.

[0050] like Figure 4 As shown, the rotating shaft is sequentially fixed with a stirring fan 7 and stirring blades 8. The stirring fan 7 is fixed to the rotating shaft in a circular array, and the stirring blades 8 are fixed to the rotating shaft in a spiral array. Furthermore, the stirring fan 7 and stirring blades 8 of this invention can be fixed to the rotating shaft via a detachable structure, or they can be fixed to the rotating shaft by welding. The number of stirring blades 8 and the number of fan blades 7 in this invention can be set according to actual needs. This invention is not specifically limited; for ease of description, it is referred to as... Figure 4 Taking the central position as an example, the mixing fan 7 in this embodiment consists of three equally spaced fan blades, and each fan blade has notches processed on both sides. The length of the notch near the end of the motor 4 is greater than that of the notch away from the end of the motor 4. This design can achieve progressive mixing of raw materials, making the concrete mixing more uniform. The mixing blade 8 is processed into a triangular structure, with its apex spirally distributed along the rotating shaft and fixedly installed on the rotating shaft. This structure of the mixing blade 8 and the positional distribution design of the mixing blade 8 can further improve the crushing and extrusion effect on large particles or agglomerates in the raw materials.

[0051] In use, the motor 4 is started, driving the feeding mechanism 6, the mixing fan 7, and the mixing blades 8 to rotate. The materials for making radiation-proof heavy concrete are poured sequentially into the feeding pipe 2 through the inlet, along with appropriate amounts of purified water and auxiliary materials. The mixing blades 8 spirally rotate and mix the materials, simultaneously conveying them to the mixing space formed by the conical hopper 9 and the mixing tank 1. The mixing fan 7 thoroughly mixes the materials. Once the feeding mechanism 6 can continuously deliver concrete of the same particle size, the concrete mixing process is complete. This invention uses the mixing blades 8 to facilitate the spiral conveying and crushing of raw materials, and lengthens the mixing path between purified water and raw materials. This avoids the traditional method of purified water directly accumulating at the bottom of the mixing tank 1, which would increase the mixing resistance of the mixing fan 7. Through the combination of the mixing blades 8 and the mixing fan 7, the raw materials are progressively mixed, achieving thorough mixing between the raw materials and purified water.

[0052] Specifically, such as Figure 2-3 and Figure 5-6 As shown, the feeding mechanism 6 includes a cylindrical tube 61, with a clamping ring 67 fixedly installed on its surface. A through hole for installing the cylindrical tube 61 is machined on the side wall of the front end of the mixing tank 1 (i.e., the end furthest from the feed pipe 2). The cylindrical tube 61 is rotatably installed to the mixing tank 1 via the clamping ring 67. An inner dividing plate 62 is fixedly connected in a circular array to the inner side of the cylindrical tube 61, and an outer scraper 66 is also fixedly connected in a circular array to the inner side of the cylindrical tube 61. An internal annular plate is provided between the inner dividing plate 62 and the outer scraper 66. The internal annular plate is fixedly connected to the inner wall of the cylindrical tube 61 and serves to prevent the raw material from flowing out directly.

[0053] As a further improvement to this embodiment, the cylindrical tube 61 is provided with wall teeth 64 on one side near the feed pipe 2, and a gear 65 is fixedly connected to one end of the shaft 5 near the feed pipe 2. The shaft 5 is rotatably mounted on the mixing tank 1. The gear 65 meshes with the wall teeth 64 for transmission, and the shaft is connected to the output end of the motor via a belt. In use, the motor 4 drives the gear 65 on the shaft 5 to mesh with the wall teeth 64, causing the cylindrical tube 61 to rotate at the front end of the mixing tank 1. Through the filtering, blocking, and spiral scraping of the concrete by the inner dividing plate 62, the built-in annular plate, and the outer scraper 66, lumps that have not been completely crushed can be blocked inside the mixing tank 1 to continue to be mixed and crushed, while the concrete that has been mixed to a uniform particle size is filtered and output. It can automatically intercept raw materials that have not been crushed and mixed sufficiently.

[0054] Furthermore, a protective cover 63 is provided at one end of the cylinder 61 near the feed pipe 2. The protective cover 63 is fixedly connected to the inner wall of the mixing tank 1 and is used to protect the gear 65 and the wall teeth 64.

[0055] As a further improvement of this embodiment, the mixing tank 1 is symmetrically connected with lifting legs 3 on the left and right sides, and the bottom of the feed pipe 2 and the conical hopper 9 are also equipped with lifting legs 3. The bottom of the lifting legs 3 is also provided with pulleys. The mixing device of the present invention, through the setting of the lifting legs 3, provides stable support for the overall mixing device, and at the same time, the pulleys installed at the bottom of the lifting legs 3 can improve the flexibility of the mixing device, making it easy to move and transport. In addition, when in use, the mixing device can be positioned and used by blocking bricks on both sides of the pulleys.

[0056] The present invention discloses a mixing method for radiation-resistant heavy concrete based on iron ore, which specifically includes the following steps:

[0057] Step 1: By controlling the rotation of motor 4, the stirring fan 7 and stirring blade 8 are controlled to rotate. The stirring blade 8 crushes and pre-treats large particles or lumps in the raw material and discharges the material through a screw conveyor.

[0058] Step 2: The raw materials moving into the conical hopper 9 are then thoroughly mixed by the mixing fan 7. At the same time, some of the concrete that has not been completely broken up is blocked inside the mixing tank 1 and continues to be mixed, while the concrete that has been mixed to a uniform particle size is filtered and output.

[0059] Step 3: When cleaning the mixing device, the lifting legs 3 installed at the bottom of the feed pipe 2 and the conical hopper 9 can be lowered to tilt the entire mixing device backward. The motor 4 is started to drive the mixing fan 7 and the mixing blades 8 to rotate. The water pipe is clamped on the inner partition plate 62 inside the cylinder 61, so that clean water is delivered into the mixing tank 1. The mixing fan 7 and the mixing blades 8 stir the clean water to automatically rinse the inside. The wastewater is output from the feed port, completing the simple cleaning and maintenance of the device.

[0060] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mixing device for radiation-proof heavy concrete based on iron ore, comprising a mixing tank (1) and a feed pipe (2), characterized in that: It also includes a conical hopper (9) and a feeding mechanism (6). The mixing tank (1) is connected to the feed pipe (2) through the conical hopper (9). A stirring blade (8) is rotatably installed on the inner side of the feed pipe (2). A stirring fan (7) is rotatably installed at the connection between the mixing tank (1) and the conical hopper (9). The feeding mechanism (6) is located on the side of the mixing tank (1) away from the feed pipe (2) and penetrates the side wall of the mixing tank (1). It is used to filter out large particles of material and then discharge the material. The diameter of the feed inlet of the conical hopper (9) is smaller than its discharge outlet, the diameter of the discharge outlet of the feed pipe (2) matches the diameter of the feed inlet of the conical hopper (9), and the diameter of the feed inlet of the mixing tank (1) matches the diameter of the discharge outlet of the conical hopper (9). The mixing tank (1) is equipped with a motor (4), the output end of the motor (4) is fixedly connected to the rotating shaft, and the rotating shaft is fixedly installed with a stirring fan (7) and a stirring blade (8) in sequence. The rotating shaft is fitted with a long shaft sleeve (10), which is located at the overlap of the rotating shaft and the mixing tank (1). The stirring fan (7) is fixed on the rotating shaft in a circular array, and the stirring blade (8) is fixed on the rotating shaft in a spiral array. The stirring fan (7) consists of three equally spaced fan blades, and each fan blade has notches on both sides. The length of the notch near the end of the motor (4) is greater than that of the notch away from the end of the motor (4). The stirring blade (8) is processed into a triangular structure, with its apex spirally distributed along the rotating shaft. The feeding mechanism (6) includes a cylindrical tube (61), which is rotatably mounted on the side wall of the mixing tank (1) via a hoop (67). The inner side of the cylindrical tube (61) is fixedly connected in a circular array with an inner dividing plate (62) and an outer scraper (66). An internal annular plate is also provided between the inner dividing plate (62) and the outer scraper (66). The internal annular plate is fixedly connected to the inner wall of the cylindrical tube (61) and is used to prevent the raw material from flowing out directly. The end of the tube (61) located inside the mixing tank (1) is provided with wall teeth (64). The gear (65) is rotatably mounted on the mixing tank (1) through the shaft (5), and the gear (65) meshes with the wall teeth (64). The shaft (5) is connected to the output end of the motor (4) through a belt.

2. The mixing device for radiation-proof heavy concrete based on iron ore according to claim 1, characterized in that: An arc-shaped plate is fixedly connected to the motor (4), and the motor (4) is bolted to the mixing tank (1) through the arc-shaped plate and the screw.

3. A mixing device for radiation-proof heavy concrete based on iron ore according to claim 1, characterized in that: The inner wall of the mixing tank (1) is equipped with a protective cover (63) to protect the gears (65) and wall teeth (64).

4. A mixing device for radiation-proof heavy concrete based on iron ore according to claim 2, characterized in that: It also includes lifting legs (3), with lifting legs (3) symmetrically connected on both sides of the mixing tank (1), and the bottom of the feed pipe (2) and the cone bucket (9) are fixedly connected with lifting legs (3), and each lifting leg (3) is provided with a pulley at the bottom.

5. A mixing method for radiation-resistant heavy concrete based on iron ore, characterized in that: Stirring using any one of the stirring apparatuses of claims 1-4 includes the following steps: Step 1: During feeding, the material is pre-crushed in the feed pipe (2); Step 2: Thoroughly mix the material in the conical hopper (9) and at the feed inlet of the mixing tank (1), and finally discharge it through the feeding mechanism (6).

6. The mixing method for radiation-resistant heavy concrete based on iron ore according to claim 5, characterized in that: In step one, by controlling the rotation of the motor (4), the stirring fan (7) and stirring blade (8) are controlled to rotate. The stirring blade (8) crushes and pre-treats large particles or lumps in the raw material and discharges the material through a screw. In step two, the raw materials that move into the conical hopper (9) are then fully stirred by the mixing fan (7). At the same time, some of the concrete that moves into the discharge port of the mixing tank (1) is blocked inside the mixing tank (1) and continues to be stirred, while the concrete that is stirred to a uniform particle size is filtered out.

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