Preparation device of barite concrete for construction of anti-radiation department
By designing multiple sets of bevel gears and rotating shafts in the mixing tank, the mixing plate is driven to fully stir and divert, the problem of settlement and layering of barite concrete during the mixing process is solved, its uniformity and compactness are improved, and the radiation protection effect is improved.
Patent Information
- Application Number
- CN202510459332.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-14
- Publication Date
- 2025-06-13
AI Technical Summary
In the prior art, barite aggregate has a large density and a large density difference from ordinary cement slurry, which is prone to settlement in the concrete mixture, resulting in excessive loss of concrete layering, segregation, and slump, affecting its uniformity and density, and reducing radiation protection effect.
A large volume barite concrete preparation device for construction of radiation-proof department was designed. By setting up multiple sets of bevel gears and rotating shafts in the mixing tank, the mixing plate is driven to rotate longitudinally and transversely. Combined with the design of the guide groove and guide plate, the materials are fully stirred and diverted, ensuring full mixing of barite and cement slurry.
Through sufficient stirring and diversion, the problem of settlement and layering of barite concrete during the mixing process is solved, and the uniformity and compactness of the concrete are improved, thereby improving its radiation protection effect.
Smart Images
Figure CN120134455A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of preparation devices for barite concrete used in the construction of radiation protection departments, and specifically to a preparation device for barite concrete used in the construction of radiation protection departments. Background Technique
[0002] With the rapid development of radiotherapy and nuclear medicine, devices such as linear accelerators, CyberKnife, and TOMO are widely adopted by major hospitals as a means of tumor treatment. During the treatment process, such devices have high accelerating particle energy and high radiation protection requirements. If the protection is not in place, it will have a great impact on the population and the surrounding environment. Taking the performance parameters of a certain brand of linear accelerator as an example, the maximum energy of the accelerated particles is 10MV for X-rays and 20MeV for electron beams. If ordinary concrete is used, the thickness of the concrete wall is too thick, and the on-site space is limited, so the layout and space of the department cannot meet the use requirements. Under the premise of limited space and the need to meet the radiation protection requirements, through the theoretical calculation, evaluation, and demonstration of the "Pre-evaluation Report on Occupational Disease Hazards Radiation Protection of Construction Projects" and the "Environmental Impact Assessment Document", on the premise of ensuring the safety of the population and the surrounding environment, the main protection walls and roofs of the linear accelerator can meet the requirements by using barite concrete (with a density of 3500 kg / m 3 , with thicknesses of 2200 mm and 2000 mm respectively).
[0003] However, in the prior art, the density of barite aggregate is relatively large, and the density difference from ordinary cement paste is relatively large, which is easy to settle in the concrete mixture, resulting in phenomena such as layering, segregation, and too fast slump loss of the concrete. If not fully stirred and mixed, it is very easy to affect the uniformity and compactness of the barite concrete and reduce its radiation protection effect. Summary of the Invention
[0004] The purpose of the present invention is to provide a large-volume barite concrete preparation device for the construction of radiation protection departments, so as to solve the problems raised in the above background technique.
[0005] To achieve the above purpose, the present invention provides the following technical solution: a mixing tank, a first support plate is arranged on the top of the mixing tank, a motor is arranged in the middle of the top of the first support plate, a rotating shaft is inserted at the bottom end of the motor, a cavity is opened in the middle of the rotating shaft, a support column is inserted in the cavity, multiple groups of first bevel gears are arranged on the support column, second bevel gears are arranged on both sides of the first bevel gear, the outer end of the second bevel gear is connected to a second rotating shaft, the second rotating shaft extends out of the cavity, and stirring plates are arranged at the upper and lower ends of the second rotating shaft.
[0006] Preferably, a discharge port is arranged at the bottom of the mixing tank, a second support plate is arranged around the top of the discharge port inside the mixing tank, a support column is arranged in the middle of the top of the second support plate, and the support column is inserted into the cavity opened in the middle of the rotating shaft.
[0007] Preferably, the periphery of the bottom of the rotating shaft is connected with a stirring frame, the stirring frame is clamped around the bottom of the stirring tank, the outer periphery of the stirring frame is closely attached to the inner wall of the bottom of the stirring tank, and the motor can drive the rotating shaft to rotate, so that the rotating shaft drives the stirring frame to rotate synchronously.
[0008] Preferably, the inner end of the second rotating shaft is connected with a second bevel gear, the second bevel gear is clamped in the cavity in the middle of the rotating shaft, and is closely attached to the first bevel gear arranged on the support column. When the motor drives the rotating shaft to rotate, it can drive the second bevel gear to mesh with the second rotating shaft and drive the second rotating shaft to rotate.
[0009] Preferably, a plurality of groups of guide grooves are formed in the stirring plates arranged at the upper and lower ends of the second rotating shaft, a plurality of groups of guide plates are arranged in the guide grooves, the guide plates are inclined, and the inclination angles of the guide plates at the upper and lower ends of the second rotating shaft are opposite.
[0010] Preferably, a telescopic groove is formed in the middle of the second rotating shaft, a spring is arranged at the inner end of the telescopic groove, one end of the spring is connected to the inner wall of the telescopic groove, the other end of the spring is connected to a telescopic column, and the outer end of the telescopic column is closely attached to the inner wall of the stirring tank.
[0011] Preferably, a plurality of groups of top blocks are arranged on the inner wall of the stirring tank, the top blocks are parallel to the telescopic columns elastically connected in the telescopic grooves, and when the motor drives the rotating shaft to rotate, it can drive the outer end of the telescopic column to squeeze against the top blocks, so that the telescopic column contracts into the telescopic groove.
[0012] Preferably, a through hole is formed in one side of the guide groove of the second rotating shaft, and the through hole communicates with the guide groove.
[0013] Preferably, the upper and lower ends of the telescopic column are connected with connecting plates, the inner sides of the connecting plates are connected with a plurality of groups of push plates, the push plates are arranged on one side of the inner guide groove of the second rotating shaft, and the number of guide openings separated by the push plates is the same as that of the guide plates.
[0014] Compared with the prior art, the beneficial effects of the present invention are:
[0015] A preparation device for barite concrete used in the construction of radiation-proof departments proposed by the present invention first pours cement slurry and barite aggregate into a mixing tank through an opening at the top of the mixing tank. Then, the motor is started to drive the rotating shaft to rotate. While the rotating shaft is rotating, it drives the second rotating shafts inserted on both sides of the rotating shaft to rotate, and at the same time drives the second bevel gears arranged inside the second rotating shafts to mesh with the first bevel gears arranged on the support columns inserted into the middle cavity of the rotating shaft, driving the second rotating shafts to rotate horizontally. When the second rotating shafts rotate longitudinally, they drive the stirring plates arranged at the upper and lower ends of the second rotating shafts to rotate longitudinally, so that the stirring plates fully stir the materials in the mixing tank. While the second rotating shafts drive the stirring plates to rotate, the materials can be diverted through the guide plates arranged in the guide grooves opened on the stirring plates, reducing the resistance received by the stirring plates while fully dispersing the materials, so that the barite and the cement slurry are fully mixed. When the outer end of the telescopic column elastically connected to the middle of the second rotating shaft collides with the top block arranged on the inner wall of the mixing tank, the top block can squeeze the telescopic column into the telescopic groove, so that the telescopic column drives the connecting plate to expand and contract synchronously. While the connecting plate expands and contracts, it drives multiple push plates arranged inside the connecting plate to extend into the guiding openings separated by the guide plates, and extrudes the materials clamped in the guiding openings through the through holes communicated with the guide grooves on one side of the guide grooves of the second rotating shafts, preventing the materials from being clamped in the guiding openings. Further, the periphery of the bottom of the rotating shaft is connected with a stirring frame, and the stirring frame rotates synchronously with the rotating shaft. The outer periphery of the stirring frame closely adheres to the inner wall of the bottom of the mixing tank. The stirring frame can rotate to gently stir the materials at the bottom of the mixing tank, preventing the materials from coagulating at the bottom of the mixing tank, and at the same time cleaning the inner wall of the bottom of the mixing tank to prevent the materials from sticking to the inner wall of the bottom of the mixing tank. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a three-dimensional structure schematic diagram of the present invention;
[0017] Figure 2 It is a sectional structure schematic diagram of the present invention;
[0018] Figure 3 It is an exploded structure schematic diagram of the internal structure of the present invention;
[0019] Figure 4 It is a three-dimensional structure schematic diagram of the stirring plate of the present invention;
[0020] Figure 5 It is a sectional structure schematic diagram of the stirring of the present invention;
[0021] Figure 6 It is a schematic diagram of the other side structure of the stirring plate of the present invention.
[0022] In the figure: stirring tank 1, discharge port 2, first support plate 3, motor 4, rotating shaft 5, cavity 6, second support plate 7, support column 8, first bevel gear 9, second bevel gear 10, second rotating shaft 11, stirring plate 12, telescopic groove 13, spring 14, telescopic column 15, stirring frame 16, top block 17, guide groove 18, guide plate 19, through hole 20, connecting plate 21, push plate 22. Detailed implementation manners
[0023] In order to clearly and completely describe the objectives, technical solutions of the present invention and make the advantages more clear, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.
[0024] Please refer to Figures 1 to 6 , the present invention provides a technical solution:
[0025] Stirring tank 1, a first support plate 3 is arranged at the top of the stirring tank 1, a motor 4 is arranged in the middle of the top of the first support plate 3, a rotating shaft 5 is inserted at the bottom end of the motor 4, a cavity 6 is formed in the middle of the rotating shaft 5, a support column 8 is inserted in the cavity 6, multiple groups of first bevel gears 9 are arranged on the support column 8, second bevel gears 10 are arranged on both sides of the first bevel gear 9, the outer end of the second bevel gear 10 is connected with a second rotating shaft 11, the second rotating shaft 11 extends out of the cavity 6, and stirring plates 12 are arranged at the upper and lower ends of the second rotating shaft 11; a discharge port 2 is arranged at the bottom of the stirring tank 1, a second support plate 7 is arranged around the top of the discharge port 2 inside the stirring tank 1, a support column 8 is arranged in the middle of the top of the second support plate 7, and the support column 8 is inserted into the cavity 6 formed in the middle of the rotating shaft 5; the bottom of the rotating shaft 5 is connected with a stirring frame 16 around it, the stirring frame 16 is clamped around the bottom of the stirring tank 1, and the outer periphery of the stirring frame 16 is closely attached to the inner wall of the bottom of the stirring tank 1. The motor 4 can drive the rotating shaft 5 to rotate, so that the rotating shaft 5 drives the stirring frame 16 to rotate synchronously; the inner end of the second rotating shaft 11 is connected with the second bevel gear 10, the second bevel gear 10 is clamped in the cavity 6 in the middle of the rotating shaft 5 and is closely attached to the first bevel gear 9 arranged on the support column 8. When the motor 4 drives the rotating shaft 5 to rotate, it can drive the second bevel gear 10 to mesh with the second rotating shaft 11 and drive the second rotating shaft 11 to rotate; multiple groups of guide grooves 18 are formed in the stirring plates 12 arranged at the upper and lower ends of the second rotating shaft 11, multiple groups of guide plates 19 are arranged in the guide grooves 18, the guide plates 19 are inclined, and the inclination angles of the guide plates 19 at the upper and lower ends of the second rotating shaft 11 are opposite; a telescopic groove 13 is formed in the middle of the second rotating shaft 11, a spring 14 is arranged at the inner end of the telescopic groove 13, one end of the spring 14 is connected with the inner wall of the telescopic groove 13, the other end of the spring 14 is connected with a telescopic column 15, and the outer end of the telescopic column 15 is closely attached to the inner wall of the stirring tank 1; multiple groups of top blocks 17 are arranged on the inner wall of the stirring tank 1, the top blocks 17 are parallel to the telescopic column 15 elastically connected in the telescopic groove 13. When the motor 4 drives the rotating shaft 5 to rotate, it can drive the outer end of the telescopic column 15 to squeeze against the top block 17, so that the telescopic column 15 contracts into the telescopic groove 13; a through hole 20 is formed in one side of the second rotating shaft 11 in the guide groove 18, and the through hole 20 communicates with the guide groove 18; the upper and lower ends of the telescopic column 15 are connected with a connecting plate 21, multiple groups of push plates 22 are connected to the inner side of the connecting plate 21, the push plates 22 are arranged on one side of the inner guide groove 18 of the second rotating shaft 11, and the number of guide openings formed by the push plates 22 and the guide plates 19 is the same.
[0026] In actual use, first pour the cement slurry and barite aggregate into the mixing tank 1 through the opening at the top of the mixing tank 1. Then start the motor 4 to drive the rotating shaft 5 to rotate. While the rotating shaft 5 is rotating, it drives the second rotating shafts 11 inserted on both sides of the rotating shaft 5 to rotate, and at the same time drives the second bevel gears 10 arranged inside the second rotating shafts 11 to mesh with the first bevel gears 9 arranged on the support columns 8 inserted in the middle cavity 6 of the rotating shaft 5, driving the second rotating shafts 11 to rotate horizontally. When the second rotating shafts 11 rotate longitudinally, they drive the stirring plates 12 arranged at the upper and lower ends of the second rotating shafts 11 to rotate longitudinally, so that the stirring plates 12 fully stir the materials in the mixing tank 1. While the second rotating shafts 11 drive the stirring plates 12 to rotate, the materials can be diverted through the guide plates 19 arranged in the guide grooves 18 opened on the stirring plates 12, reducing the resistance received by the stirring plates 12 while fully dispersing the materials, so that the barite and the cement slurry are fully mixed. When the outer end of the telescopic column 15 elastically connected to the middle of the second rotating shaft 11 collides with the top block 17 arranged on the inner wall of the mixing tank 1, the top block 17 can squeeze the telescopic column 15 into the telescopic groove 13, so that the telescopic column 15 drives the connecting plate 21 to expand and contract synchronously. While the connecting plate 21 expands and contracts, it drives multiple push plates 22 arranged inside the connecting plate 21 to extend into the guide openings separated by the guide plates 19, and extrudes the materials clamped in the guide openings through the through holes 20 communicated with the guide grooves 18 on one side of the guide grooves 18 of the second rotating shaft 11, preventing the materials from being clamped in the guide openings. Further, the periphery of the bottom of the rotating shaft 5 is connected with a stirring frame 16. The stirring frame 16 rotates synchronously with the rotating shaft 5. The outer periphery of the stirring frame 16 closely adheres to the inner wall of the bottom of the mixing tank 1. The stirring frame 16 can rotate to gently stir the materials at the bottom of the mixing tank 1, preventing the materials from condensing at the bottom of the mixing tank 1, and at the same time cleaning the inner wall of the bottom of the mixing tank 1 to prevent the materials from sticking to the inner wall of the bottom of the mixing tank 1.
[0027] During actual pouring, the interval time from the discharge of the barite radiation-proof concrete from the mixing tank 1 to the formwork at the construction site should not exceed 90 minutes. Before concrete pouring, the pouring line, the layout of concrete pumping equipment, and the pouring sequence need to be determined. When the barite concrete supply is sufficient, due to the large density of the barite concrete and the large lateral pressure of the vertical structure during pouring, the pouring sequence should be reasonably planned. During the pouring process of the barite concrete, pouring and vibrating are a key link in whether the concrete structure entity is formed densely and evenly. Due to the large apparent density of the barite coarse aggregate, over-vibrating easily causes the coarse aggregate to sink, resulting in uneven density, segregation and other adverse conditions, seriously affecting the overall radiation-proof effect and strength of the barite concrete, etc. When pouring the barite concrete on site, the vibrating time should be controlled within 15 - 25 seconds, and it is advisable to take the appearance of floating slurry as the standard. When vibrating in layers, the vibrating rod should be inserted 50 mm into the lower layer.
[0028] Although the above description of the illustrative embodiments of the present application is provided to enable those skilled in the art to understand the present application, the present application is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the appended claims, all applications and creations using the concept of the present application are within the scope of protection.
Claims
1. A device for preparing large-volume barite concrete for construction of radiation protection departments, characterized in that: include: A stirring tank (1) is provided with a first support plate (3) at the top of the stirring tank (1), a motor (4) is provided at the middle of the top of the first support plate (3), a rotating shaft (5) is inserted at the bottom end of the motor (4), a cavity (6) is opened in the middle of the rotating shaft (5), a supporting column (8) is inserted in the cavity (6), a plurality of groups of first bevel gears (9) are provided on the supporting column (8), second bevel gears (10) are provided on both sides of the first bevel gears (9), the outer ends of the second bevel gears (10) are connected to the second rotating shaft (11), the second rotating shaft (11) extends out of the cavity (6), and stirring plates (12) are provided at the upper and lower ends of the second rotating shaft (11).
2. A device for preparing large-volume barite concrete for construction of radiation protection department according to claim 1, characterized in that: The bottom of the mixing tank (1) is provided with a discharge port (2), and the inside of the mixing tank (1) is provided with a second support plate (7) around the top of the discharge port (2), and a support column (8) is provided in the middle of the top of the second support plate (7), and the support column (8) is inserted into a cavity (6) opened in the middle of the rotating shaft (5).
3. A device for preparing large-volume barite concrete for construction of radiation protection department according to claim 2, characterized in that: The bottom of the rotating shaft (5) is connected to a stirring frame (16) around the bottom of the stirring tank (1). The stirring frame (16) is clamped around the bottom of the stirring tank (1). The outer side of the stirring frame (16) is in close contact with the bottom inner wall of the stirring tank (1). The motor (4) can drive the rotating shaft (5) to rotate, so that the rotating shaft (5) drives the stirring frame (16) to rotate synchronously.
4. A device for preparing large-volume barite concrete for construction of radiation protection department according to claim 3, characterized in that: The inner end of the second rotating shaft (11) is connected to the second bevel gear (10). The second bevel gear (10) is clamped in the cavity (6) in the middle of the rotating shaft (5) and is tightly attached to the first bevel gear (9) arranged on the support column (8). When the motor (4) drives the rotating shaft (5) to rotate, it can drive the second bevel gear (10) to mesh with the second rotating shaft (11), thereby driving the second rotating shaft (11) to rotate.
5. The device for preparing large-volume barite concrete for construction of radiation protection department according to claim 4, characterized in that: A plurality of guide grooves (18) are provided on the stirring plates (12) arranged at the upper and lower ends of the second rotating shaft (11), and a plurality of guide plates (19) are arranged in the guide grooves (18). The guide plates (19) are inclined, and the inclination angles of the guide plates (19) at the upper and lower ends of the second rotating shaft (11) are opposite.
6. The device for preparing large-volume barite concrete for construction of radiation protection department according to claim 5, characterized in that: A telescopic slot (13) is provided in the middle of the second rotating shaft (11), and a spring (14) is provided at the inner end of the telescopic slot (13). One end of the spring (14) is connected to the inner wall of the telescopic slot (13), and the other end of the spring (14) is connected to a telescopic column (15). The outer end of the telescopic column (15) is in close contact with the inner wall of the mixing tank (1).
7. The device for preparing large-volume barite concrete for construction of radiation protection department according to claim 6, characterized in that: The inner wall of the stirring tank (1) is provided with a plurality of groups of top blocks (17), the top blocks (17) being parallel to the telescopic column (15) elastically connected to the telescopic groove (13), and when the motor (4) drives the rotating shaft (5) to rotate, the outer end of the telescopic column (15) can be driven to be squeezed with the top blocks (17), so that the telescopic column (15) is contracted into the telescopic groove (13).
8. The device for preparing large-volume barite concrete for construction of radiation protection department according to claim 7, characterized in that: The second rotating shaft (11) is provided with a through hole (20) on one side of the guide groove (18), and the through hole (20) is communicated with the guide groove (18).
9. The device for preparing large-volume barite concrete for construction of radiation protection department according to claim 8, characterized in that: The upper and lower ends of the telescopic column (15) are connected to a connecting plate (21), the inner side of the connecting plate (21) is connected to a plurality of push plates (22), the push plates (22) are arranged on one side of the internal guide groove (18) of the second rotating shaft (11), and the push plates (22) and the guide plates (19) form the same number of guide opening groups.