A mixing device for producing radiation-proof concrete

Abstract

The utility model relates to the field of concrete, and discloses a mixing device for producing radiation-proof concrete, wherein a lifting plate is installed on a push rod of a hydraulic cylinder, a mixing shaft is rotatably installed below the lifting plate through a bearing, an upper end of the mixing shaft passes through the lifting plate and is placed above the lifting plate, and the upper part of the mixing shaft is connected with an output shaft of a mixing motor installed on the lifting plate through a coupling, two groups of mixing blades are arranged on the outer ring surface of the mixing blade from bottom to top, a mixing barrel is arranged directly below the mixing shaft, and the lower front end of the mixing barrel is rotatably connected with a base, the mixing shaft is arranged on the lifting plate which moves up and down, and the outer side of the mixing shaft is provided with mixing blades with an inclined design, the mixing blades also continuously move up and down during the rotation process, so that materials can flow up and down along the blades, which not only increases the mixing range of the materials, but also reduces the resistance, so that the raw materials inside the mixing barrel can be mixed more fully.

Description

Technical Field

[0001] The utility model relates to the field of concrete, in particular to a mixing device for producing radiation-proof concrete. Background Art

[0002] Radiation-proof concrete has the ability to shield gamma rays, X-rays or neutron radiation, which can weaken the penetration strength of neutron flux. It is often used as a substitute for expensive radiation-proof materials such as lead and steel, and is often used for the protection of radioisotope equipment. In order to determine the actual radiation protection of radiation-proof concrete after production, it is usually necessary to use the corresponding production equipment to make some parts and then conduct experimental tests. A laboratory concrete mixing device is disclosed in the Chinese utility model patent with announcement number CN212578875U. The laboratory mixing device removes the stirring component by taking out the positioning rod, separates the stirring component for thorough cleaning, rotates the threaded rod A to remove the mixing barrel, and cleans the mixing barrel, realizing the separation of the stirring component and the mixing barrel for thorough cleaning, thereby improving the cleaning effect and solving the problem of incomplete cleaning of the barrel wall and greater difficulty in cleaning.

[0003] In view of the above-mentioned related technologies, the inventor believes that there are the following defects: due to the high amount of cementitious materials used in this type of radiation-proof concrete, the mixture has high viscosity, and the above-mentioned stirring devices are all simple stirring structures, and their stirring positions are all fixed. When the materials are layered, it is difficult to mix the different materials between the upper and lower parts again, and the stirring effect of these materials with high viscosity is not ideal. For this reason, we designed a mixing device for the production of radiation-proof concrete. Utility Model Content

[0004] In order to solve the technical problem that it is difficult to mix and react different materials in upper and lower parts again when the materials are layered, the utility model provides a mixing device for producing radiation-proof concrete.

[0005] The utility model is implemented by the following technical scheme: a mixing device for producing radiation-proof concrete, comprising a base, two hydraulic cylinders symmetrically arranged on the left and right sides above the base, and a lifting plate is installed on the push rod of the hydraulic cylinder, a mixing shaft is rotatably installed below the lifting plate through a bearing, the upper end of the mixing shaft passes through the lifting plate and is placed above it, and the upper part of the mixing shaft is connected to the output shaft of the mixing motor installed on the lifting plate through a coupling, and two groups of mixing blades are arranged on the outer ring surface of the mixing blade from bottom to top;

[0006] The stirring barrel is arranged directly below the stirring shaft, and the lower front end of the stirring barrel is rotatably connected to the base.

[0007] As a further improvement of the above scheme, each group of the stirring blades includes three annular stirring blades, and each of the stirring blades is obliquely welded on the outer ring surface of the stirring shaft. The outermost side of the stirring blade does not contact the inner wall of the stirring barrel. The inclined stirring blades can make the material flow up and down along the blades when rotating, which not only increases the stirring range of the material, but also reduces the resistance, making the material flow smoother, improving the stirring efficiency, and making the mixing of multiple materials more thorough.

[0008] As a further improvement of the above scheme, a vertical guide rod is respectively provided at the four corners above the base, and the lifting plate is slidably sleeved on the guide rod through the sliding hole. The setting of the guide rod can guide the up and down movement of the lifting plate, making its operation more stable;

[0009] A limiting ring is arranged at the top end of the guide rod, and the outer diameter of the limiting ring is larger than the inner diameter of the sliding hole, which can prevent the lifting plate from being separated from the connection with the guide rod, thereby improving safety.

[0010] As a further improvement of the above scheme, a rotating shaft seat is arranged at the lower front side of the mixing barrel. The front end cross-section of the rotating shaft seat is a semicircular structure, and the lower side of the semicircular structure is tangent to the upper surface of the base. When the mixing barrel is deflected forward, the front half of the semicircular end of the rotating shaft seat will contact the base and support the mixing barrel. The rotating shaft seat is relatively wide as a whole, and can also disperse part of the pressure. The pressure will not be transmitted to the connecting screw and will not cause difficulties for subsequent rotation.

[0011] As a further improvement of the above scheme, two symmetrically distributed connecting shaft blocks are arranged above the base, the rotating shaft seat is movably placed between the two connecting shaft blocks, and a connecting screw is sleeved between the connecting shaft block and the rotating shaft seat and connected by a nut. Threads are arranged at both ends of the connecting screw, and the middle position is smoothly designed, which facilitates the installation of the mixing barrel without causing wear to the connecting screw and is also convenient for subsequent disassembly.

[0012] As a further improvement of the above scheme, the upper end surface of the base is recessed downward to form a positioning arc groove, and the lower end surface of the mixing barrel is integrally formed with a positioning arc block, and the centers of the positioning arc groove and the positioning arc block are both colinear with the axis of the connecting screw. When the mixing barrel rotates, it rotates around the connecting screw as the axis, and the positioning arc block can deflect in the positioning arc groove, thereby facilitating the rotation of the mixing barrel.

[0013] As a further improvement of the above solution, the size of the positioning arc groove matches the size of the positioning arc block, and the shapes of the two are completely consistent. The positioning arc block can be snapped into the positioning arc groove, thereby fixing the mixing barrel so that it is not easy to shake;

[0014] Handles are provided on the upper left and right sides of the mixing barrel to facilitate the deflection of the mixing barrel.

[0015] As a further improvement of the above scheme, when the rear side of the mixing barrel is deflected to 60-80 degrees, the bottom end of the mixing shaft at the highest point is above the rear side of the mixing barrel. When the mixing barrel is rotated to 60-80 degrees, the rear end of the mixing barrel is below the mixing shaft and the mixing blades, and the two will not contact each other, thereby avoiding interference.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The utility model arranges the mixing barrel on the top of the base by rotating the shaft seat and the connecting screw, and the mixing barrel can be tilted as needed, so as to facilitate the pouring out of the concrete inside the mixing barrel and facilitate the subsequent cleaning of the inside of the mixing barrel. At the same time, the entire mixing barrel can also be quickly disassembled;

[0018] 2. By setting the stirring shaft on a lifting plate that moves up and down, and providing inclined stirring blades on the outside of the stirring shaft, the stirring blades also continuously move up and down during the rotation process, so that the material can flow up and down along the blades, which not only increases the stirring range of the material, but also reduces the resistance, so that the raw materials inside the mixing barrel can be mixed more fully. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall structure of a mixing device for producing radiation-proof concrete provided by the utility model;

[0020] Figure 2 for Figure 1 Front view of the diagram;

[0021] Figure 3 for Figure 2 Schematic diagram of the partial section;

[0022] Figure 4 for Figure 1 A schematic diagram of the structure in which the mixing barrel is not installed;

[0023] Figure 5 for Figure 1 Schematic diagram of the structure enlarged at point A in the middle.

[0024] Description of main symbols:

[0025] 1. Base; 11. Positioning arc groove; 12. Connecting shaft block; 2. Mixing barrel; 21. Rotating shaft seat; 22. Handle; 23. Positioning arc block; 3. Hydraulic cylinder; 31. Guide rod; 4. Lifting plate; 5. Mixing motor; 6. Mixing shaft; 7. Mixing blade; 8. Connecting screw. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0027] Example:

[0028] Please combine Figure 1-Figure 5 The present embodiment is a mixing device for producing radiation-proof concrete, comprising a base 1, two hydraulic cylinders 3 symmetrically arranged on the left and right sides above the base 1, and a lifting plate 4 is installed on the push rod of the hydraulic cylinder 3, a mixing shaft 6 is rotatably installed below the lifting plate 4 through a bearing, the upper end of the mixing shaft 6 passes through the lifting plate 4 and is placed above it, and the upper part of the mixing shaft 6 is connected to the output shaft of the mixing motor 5 installed on the lifting plate 4 through a coupling, and two groups of mixing blades 7 are arranged on the outer ring surface of the mixing blade 7 from bottom to top;

[0029] The stirring barrel 2 is arranged directly below the stirring shaft 6 , and the lower front end of the stirring barrel 2 is rotatably connected to the base 1 .

[0030] Each group of stirring blades 7 includes three annular stirring blades 7, and each stirring blade 7 is welded obliquely on the outer ring surface of the stirring shaft 6. The outermost side of the stirring blade 7 does not contact the inner wall of the stirring barrel 2. The inclined stirring blade 7 can make the material flow up and down along its blade when rotating, which not only increases the stirring range of the material, but also reduces the resistance, making the material flow smoother, improving the stirring efficiency, and making the mixing of multiple materials more thorough.

[0031] A vertical guide rod 31 is respectively arranged at the four corners above the base 1, and the lifting plate 4 is slidably sleeved on the guide rod 31 through a sliding hole. The setting of the guide rod 31 can guide the up and down movement of the lifting plate 4, making its operation more stable;

[0032] A limit ring is provided at the top end of the guide rod 31 , and the outer diameter of the limit ring is larger than the inner diameter of the sliding hole, which can prevent the lifting plate 4 from being separated from the guide rod 31 , thereby improving safety.

[0033] A rotating shaft seat 21 is provided at the lower front side of the mixing barrel 2. The front end cross-section of the rotating shaft seat 21 is a semicircular structure, and the lower side of the semicircular structure is tangent to the upper surface of the base 1. When the mixing barrel 2 is deflected forward, the front half of the semicircular end of the rotating shaft seat 21 will contact the base 1 and support the mixing barrel 2. The rotating shaft seat 21 is relatively wide as a whole, and can also disperse part of the pressure. The pressure will not be transmitted to the connecting screw 8, and will not cause difficulties for subsequent rotation.

[0034] Two symmetrically distributed connecting shaft blocks 12 are arranged above the base 1, and the rotating shaft seat 21 is movably placed between the two connecting shaft blocks 12, and a connecting screw 8 is sleeved between the connecting shaft block 12 and the rotating shaft seat 21 and connected by a nut. Both ends of the connecting screw 8 are provided with threads, and the middle position is smoothly designed, which is convenient for the installation of the mixing barrel 2, will not cause wear to the connecting screw 8, and is also convenient for subsequent disassembly.

[0035] The upper surface of the base 1 is recessed downward to form a positioning arc groove 11, and the lower surface of the mixing barrel 2 is integrally formed with a positioning arc block 23, and the centers of the positioning arc groove 11 and the positioning arc block 23 are both colinear with the axis of the connecting screw 8. When the mixing barrel 2 rotates, it rotates around the connecting screw 8 as the axis, and the positioning arc block 23 can deflect in the positioning arc groove 11, thereby facilitating the rotation of the mixing barrel 2.

[0036] The size of the positioning arc groove 11 matches the size of the positioning arc block 23, and the shapes of the two are completely consistent. The positioning arc block 23 can be snapped into the positioning arc groove 11, thereby fixing the mixing barrel 2 so that it is not easy to shake;

[0037] Handles 22 are provided on the upper left and right sides of the mixing barrel 2 to facilitate the deflection of the mixing barrel 2 .

[0038] When the rear side of the mixing barrel 2 is deflected to 60-80 degrees, the bottom end of the mixing shaft at the highest point is above the rear side of the mixing barrel 2. When the mixing barrel 2 is rotated to 60-80 degrees, the rear end of the mixing barrel 2 is below the mixing shaft and the mixing blade 7, and the two will not contact, avoiding interference.

[0039] The implementation principle of a mixing device for producing radiation-proof concrete in the embodiment of the present application is as follows: add aggregates such as barite, magnetite, limonite, scrap iron blocks, and substances such as boron, cadmium, and lithium into the mixing barrel 2, and add corresponding cement and water, then turn on the power of the mixing motor 5, the mixing motor 5 will rotate the mixing shaft 6, and then make a plurality of mixing blades 7 mix and stir a variety of raw materials in the mixing barrel 2, so that they are fully mixed and reacted, and during the mixing process, the push rod of the hydraulic cylinder 3 can move up and down as needed, so that the mixing blades 7 can rotate during the rotation process. The stirring blades 7 are also constantly moving up and down, and because the stirring blades 7 are all welded obliquely on the outer ring surface of the stirring shaft 6, the stirring blades 7 can make the materials flow up and down along the blades when rotating, which not only increases the stirring range of the materials, but also reduces the resistance, so that the raw materials inside the stirring barrel 2 can be mixed more fully. After the stirring is completed, the stirring shaft 6 and the stirring blades 7 move up and away from the stirring barrel 2. At this time, the stirring barrel 2 can be deflected forward with the connecting screw 8 as the axis through the handle 22, so that the concrete inside can be poured out, and when cleaning, it can be directly washed with water after pouring it out;

[0040] The mixing barrel 2 is rotatably arranged on the top of the base 1 by rotating the shaft seat 21 and the connecting screw 8, and the mixing barrel 2 can be tilted as needed, so as to facilitate the pouring out of the concrete inside the mixing barrel 2 and facilitate the subsequent cleaning of the inside of the mixing barrel 2. At the same time, the entire mixing barrel 2 can also be quickly disassembled;

[0041] By setting the stirring shaft 6 on the lifting plate 4 that moves up and down, and providing an inclined stirring blade 7 on the outer side of the stirring shaft 6, the stirring blade 7 also continuously moves up and down during the rotation process, so that the material can flow up and down along the blade, which not only increases the stirring range of the material, but also reduces the resistance, so that the raw materials inside the stirring barrel 2 can be more fully mixed.

[0042] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A mixing device for producing radiation-proof concrete, comprising a base (1), characterized in that: Two hydraulic cylinders (3) are symmetrically arranged on the left and right sides above the base (1), and a lifting plate (4) is installed on the push rod of the hydraulic cylinder (3). The stirring shaft (6) is rotatably installed below the lifting plate (4) through a bearing. The upper end of the stirring shaft (6) passes through the lifting plate (4) and is placed above it. The upper end of the stirring shaft (6) is connected to the output shaft of the stirring motor (5) installed on the lifting plate (4) through a coupling. Two groups of stirring blades (7) are arranged on the outer ring surface of the stirring blade (7) from bottom to top. The stirring barrel (2) is arranged directly below the stirring shaft (6), and the lower front end of the stirring barrel (2) is rotatably connected to the base (1).

2. A mixing device for producing radiation-proof concrete according to claim 1, characterized in that: Each group of stirring blades (7) comprises three stirring blades (7) in an annular shape, and each stirring blade (7) is welded obliquely on the outer ring surface of the stirring shaft (6), and the outermost side of the stirring blade (7) does not contact the inner wall of the stirring barrel (2).

3. A mixing device for producing radiation-proof concrete according to claim 1, characterized in that: A vertical guide rod (31) is respectively arranged at the four corners above the base (1), and the lifting plate (4) is slidably sleeved on the guide rod (31) through a sliding hole. A limiting ring is arranged at the top end of the guide rod (31), and the outer diameter of the limiting ring is larger than the inner diameter of the sliding hole.

4. A mixing device for producing radiation-proof concrete according to claim 1, characterized in that: A rotating shaft seat (21) is provided at the lower front side of the mixing barrel (2); the front end cross section of the rotating shaft seat (21) is a semicircular structure, and the lower side of the semicircular structure is tangent to the upper surface of the base (1).

5. A mixing device for producing radiation-proof concrete according to claim 4, characterized in that: Two symmetrically distributed connecting shaft blocks (12) are arranged above the base (1), the rotating shaft seat (21) is movably placed between the two connecting shaft blocks (12), and a connecting screw (8) is sleeved between the connecting shaft block (12) and the rotating shaft seat (21) and connected via a nut.

6. A mixing device for producing radiation-proof concrete according to claim 5, characterized in that: The upper surface of the base (1) is recessed downward to form a positioning arc groove (11), and the lower surface of the mixing barrel (2) is integrally formed with a positioning arc block (23), and the centers of the positioning arc groove (11) and the positioning arc block (23) are both colinear with the axis of the connecting screw (8).

7. A mixing device for producing radiation-proof concrete according to claim 6, characterized in that: The size of the positioning arc groove (11) matches the size of the positioning arc block (23), and the shapes of the two are completely consistent; Handles (22) are provided above the left and right sides of the mixing barrel (2).

8. The mixing equipment for producing radiation-proof concrete according to claim 1, characterized in that: When the rear side of the stirring barrel (2) is deflected to 60-80 degrees, the bottom end of the stirring shaft (6) at the highest point is located above the rear side of the stirring barrel (2).

Images