Powder feeding device for high-ductility concrete production
By designing a powder feeding device including a feeding silo, a bin cover and a cutting knife, the problem of dust flying during the powder feeding process in high-ductile concrete production is solved, and a cleaner and safer production environment is achieved.
Patent Information
- Application Number
- CN202421916531.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-07
AI Technical Summary
During the production process of high ductility concrete, the powder feeding process causes dust to fly, affecting the workshop environment and the health of operators.
A powder feeding device including a feeding silo, a bin cover, a first elastic member and a cutting knife is designed. The bin cover can be flipped and opened when the powder is added, and will automatically flip and close after the feed is finished to prevent dust from flying. A cutting knife is used to cut the bottom of the bag after it is placed stably to avoid breaking the bag in advance and causing the powder to fly.
It effectively prevents dust from flying during feeding, improves the cleanliness and operational safety of the production environment, and reduces the health risks to operators.
Smart Images
Figure CN223044840U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of concrete production equipment, and specifically relates to a powder feeding device for producing high-ductility concrete. Background Technique
[0002] High-ductility concrete is a fiber-reinforced composite material based on the design principle of micromechanics, with cement, quartz sand, etc. as the matrix, and has high ductility, high damage resistance, high durability, high strength (compressive and tensile), and good crack control ability, also known as "bendable concrete".
[0003] High-ductility concrete is mainly made by mixing materials such as cement, aggregates, fly ash, and gypsum powder after a certain ratio. Currently, for powder feeding of mixing equipment, generally, the ton bag is opened and placed at the open feeding port for feeding. Since the current feeding port is generally open inside the workshop without protection, it often causes dust to fill the workshop during the feeding process, which not only affects the sanitary environment inside the workshop but also has an impact on the physical health of the operating workers inside the workshop. Summary of the Invention
[0004] The technical problem to be solved by the utility model is: to provide a powder feeding device for producing high-ductility concrete to solve the problem of frequent dust flying during the powder feeding process.
[0005] The technical solution adopted by the utility model is: a powder feeding device for producing high-ductility concrete, including a feeding bin. A feeding port and a supporting inclined plane for supporting the packaging bag are arranged inside the feeding bin. It also includes two "<"-shaped bin covers symmetrically arranged on both sides of the feeding bin. The middle part of the bin cover is rotatably connected to the feeding bin. A first elastic member is also arranged between the bin cover and the feeding bin. A first limiting block for limiting the bin cover is also arranged on the top surface of the feeding bin. A cutting knife for cutting the bottom of the packaging bag is arranged inside the feeding bin.
[0006] After adopting the above structure, the following beneficial effects are obtained:
[0007] 1. The bin cover arranged on the feeding bin can close the feeding port usually to prevent dust from flying. When the packaging bag with powder is placed at the feeding port, it can push the bin cover to flip and open the feeding port. After the powder feeding is completed and the packaging bag is taken out, the bin cover can automatically flip to the closed state under the action of the first elastic member, thereby avoiding the dust in the feeding bin from flying outside the feeding bin.
[0008] 2. The "<"-shaped bin cover can not only close the feeding port, but also support the side of the packaging bag when it flips and opens, and can also reduce the probability of dust flying out from the side of the packaging bag.
[0009] 3. The cutting knife arranged inside the feeding bin can cut the packaging bag after the packaging bag is placed stably, which can avoid the situation of powder flying caused by premature bag breaking, further reduce the situation of dust flying, and improve production safety.
[0010] Preferably, a second limiting component is further arranged on the supporting inclined plane. The second limiting component includes a second limiting block and a second elastic member. A first sliding groove is formed in the supporting inclined plane. The second limiting block is slidably connected in the first sliding groove. One side of the second elastic member abuts against the second limiting block, and the other side of the second elastic member abuts against the side of the first sliding groove. The top surface of the second limiting block is an inclined plane, and a second limiting groove for limiting the bin cover is formed in the second limiting block.
[0011] When the bin cover rotates to the open state, the bottom surface of the bin cover abuts against the top surface of the second limiting block, pushing the second limiting block to move, and then the bin cover is clamped in the second limiting groove. The second limiting block is reset under the action of the second elastic member, and then the bin cover is restricted in the open position, avoiding the reset of the bin cover due to the reduction of the powder in the packaging bag during the powder feeding process, and the open or closed state of the bin cover can be adjusted according to actual needs.
[0012] Preferably, the second limiting block is further connected with an unlocking cylinder. Two ends of the unlocking cylinder are respectively connected with the second limiting block and the side wall of the first sliding groove.
[0013] The unlocking cylinder can pull the second limiting block to move, so as to unlock it, which can realize the automatic unlocking and reset of the bin cover, improving both the efficiency and the safety performance.
[0014] Preferably, a bag pushing device is further arranged at the feeding port. The bag pushing device includes a push plate rotatably connected to the feeding bin and a first driving mechanism for driving the push plate to move.
[0015] The bag pushing device drives the push plate to perform periodic reciprocating motion through the first driving mechanism, thereby pushing the packaging bag to shake, so that the powder in the packaging bag can flow out smoothly from the bottom, improving the feeding efficiency.
[0016] Preferably, a material crushing mechanism is arranged at the feeding port. The material crushing mechanism includes a first grid plate and a second grid plate arranged in parallel. The first grid plate is fixedly installed in the feeding port. The second grid plate is slidably connected in the feeding port, and the second grid plate is connected with a second driving mechanism for driving the second grid plate to perform reciprocating motion.
[0017] The second grid plate reciprocates under the drive of the second drive mechanism to achieve an interleaved movement with the first grid plate, so that the caked powder falling between the first grid plate and the second grid plate is squeezed and dispersed during the interleaved movement, making it more accurate for subsequent weighing and feeding. At the same time, the reciprocating second grid plate can also improve the efficiency of powder feeding and prevent the powder from accumulating on the first grid plate or the second grid plate.
[0018] Preferably, a screen is further provided below the feeding port.
[0019] The setting of the screen can screen the powder to prevent large-particle powder from entering, thereby ensuring the accuracy of subsequent weighing and mixing processes.
[0020] Preferably, a screen installation opening is further provided on the side of the feeding bin. A second chute is provided at the screen installation opening. An extension rod is connected to the screen, and the extension rod extends to the outside of the feeding bin through the second chute.
[0021] The screen installation opening enables the screen to be cleaned or replaced in a timely manner after being blocked. The setting of the extension rod enables the screen to be directly replaced from the outside of the feeding bin, which is more convenient.
[0022] Preferably, a third limiting groove is further connected to the bottom of the second chute. A third limiting block is slidably connected in the third limiting groove. The third limiting block is connected to the feeding bin through a third elastic member. An arc-shaped groove is provided on the third limiting block.
[0023] The setting of the third limiting groove and the third limiting block can embed the screen in the arc-shaped groove of the third limiting member after the screen is installed, preventing the screen from shaking or being displaced during use, resulting in a reduction in the screening effect.
[0024] Preferably, flexible bristles are installed on the side of the screen installation opening and the second chute.
[0025] The setting of the flexible bristles can brush the screen during the replacement or cleaning of the screen, preventing the powder accumulated on the screen from spilling out of the feeding bin together with the screen, further improving the cleanliness of the production environment and reducing the dust flying inside the workshop. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 is a three-dimensional structural schematic diagram of a powder feeding device for producing high-ductility concrete according to the present invention in Embodiment 1.
[0027] Figure 2 is a front view structural schematic diagram of a powder feeding device for producing high-ductility concrete according to the present invention in Embodiment 1.
[0028] Figure 3 is Figure 2 the schematic cross-sectional structure diagram of "A-A" in
[0029] Figure 4 the right-view structure diagram of a powder feeding device for the production of high-ductility concrete according to the present utility model in Embodiment 1.
[0030] Figure 5 is Figure 4 the schematic cross-sectional structure diagram of "B-B" in
[0031] Figure 6 is Figure 5 the partial cross-sectional structure diagram of "C-C" in
[0032] Figure 7 the three-dimensional structure diagram of a powder feeding device for the production of high-ductility concrete according to the present utility model in Embodiment 2.
[0033] Figure 8 the front-view structure diagram of a powder feeding device for the production of high-ductility concrete according to the present utility model in Embodiment 2.
[0034] Figure 9 the right-view structure diagram of a powder feeding device for the production of high-ductility concrete according to the present utility model in Embodiment 2.
[0035] Figure 10 is Figure 8 the schematic cross-sectional structure diagram of "D-D" in
[0036] Figure 11 is Figure 8 the schematic cross-sectional structure diagram of "E-E" in
[0037] Figure 12 is Figure 8 the partial enlarged structure diagram of the "F" area in
[0038] Figure 13 the three-dimensional structure diagram of a powder feeding device for the production of high-ductility concrete according to the present utility model in the working state in Embodiment 2.
[0039] Figure 14 is Figure 9 the schematic cross-sectional structure diagram of the "G-G" area in the working state in
[0040] Among them, the feeding bin 10, the supporting inclined plane 11, the feeding port 12, the first limiting block 13, the cutting knife 14, the bin cover 20, the second limiting assembly 30, the first sliding groove 31, the second limiting block 32, the second elastic member 33, the second limiting groove 34, the unlocking cylinder 35, the bag pushing device 40, the pushing plate 41, the first driving mechanism 42, the accommodating groove 43, the crushing mechanism 50, the first grid plate 51, the second grid plate 52, the second driving mechanism 53, the screen 61, the extension rod 62, the screen installation opening 63, the fixing groove 64, the second sliding groove 65, the third limiting groove 71, the third limiting block 72, and the third elastic member 73. Detailed implementation mode
[0041] The present utility model will be further described below in conjunction with the accompanying drawings and specific implementation modes.
[0042] Embodiment 1
[0043] According to the attached drawings of the specification Figures 1-6 As shown, the present utility model provides a powder feeding device for the production of high-ductility concrete, including a feeding bin 10. A feeding port 12 and a supporting inclined plane 11 for supporting the packaging bag are arranged in the feeding bin 10. A "く"-shaped bin cover 20 is rotatably connected to the left and right sides of the feeding bin 10 respectively. A first elastic member is also connected to the rotating shaft of the bin cover 20. The first elastic member adopts a torsion spring, and the two ends of the torsion spring are respectively abutted against the bin cover 20 and the feeding bin 10, so that the bin cover 20 has a tendency to move towards the closed state. At the same time, a first limiting block 13 is also fixed on the side wall of the feeding bin 10 to limit the bin cover 20 at the closed position and prevent the bin cover 20 from rotating excessively and causing the feeding port 12 to be unable to be blocked.
[0044] A cutting hole is also opened on the feeding bin 10, and a cutting knife 14 that can expand and contract along the cutting hole is connected in the cutting hole. The cutting knife 14 is also connected to a driving cylinder for driving the cutting knife 14 to slide along the through hole. The cutting knife 14 is usually accommodated in the cutting control. When bag breaking is required, the cylinder drives the cutting knife 14 to move and cuts the bottom of the packaging bag to realize the bag breaking work. In this way, the packaging bag can be placed stably at the feeding bin 10 before bag breaking, avoiding the situation that the powder flies during the transportation of the packaging bag due to prior bag breaking. At the same time, when the packaging bag is placed stably on the feeding bin 10, the gap between the packaging bag and the supporting inclined plane 11 can be filled by its own weight, further avoiding the situation of dust flying during the powder feeding process.
[0045] In this embodiment, a second limiting component 30 is further installed on the supporting inclined plane 11. The second limiting component 30 includes a first sliding groove 31 opened on the supporting inclined plane 11 and a second limiting block 32 slidably connected in the first sliding groove 31. A second elastic member 33 is further installed between the second limiting block 32 and the side surface of the first sliding groove 31. In this embodiment, the second elastic member 33 is a compression spring. An inclined plane for abutting against the bin cover 20 is further opened on the upper end surface of the second limiting block 32. At the same time, a second limiting groove 34 for accommodating the bin cover 20 is opened at the bottom of the second limiting block 32. Through such a setting, when the bin cover 20 is opened, the bin cover 20 pushes the second limiting block 32 to move towards the inner side of the first sliding groove 31, and under the action of the second elastic member 33, the bin cover 20 is clamped in the second limiting groove 34 of the second limiting block 32 to prevent the bin cover 20 from automatically closing; An unlocking cylinder 35 is further arranged in the first sliding groove 31. The two ends of the unlocking cylinder 35 are respectively connected to the second limiting block 32 and the first sliding groove 31. Through the unlocking cylinder 35, the bin cover 20 can be quickly unlocked, so that the bin cover 20 can quickly return to the closed state after the feeding is completed.
[0046] A bag pushing device 40 is further installed above the feeding port 12. The bag pushing device 40 includes a push plate 41 and a first driving mechanism 42 for driving the push plate 41 to move. In this embodiment, the bottom of the push plate 41 is rotatably connected above the feeding port 12. The first driving mechanism 42 is a cylinder. A receiving groove 43 for accommodating the first driving mechanism 42 is opened on the feeding bin 10. The bottom of the cylinder is rotatably connected in the receiving groove 43. The output end of the cylinder is rotatably connected to the side surface of the push plate 41. When the first driving mechanism 42 performs a telescopic action, the push plate 41 can be driven to flip, so as to push the packaging bag, so that the powder in the packaging bag can quickly enter the feeding port 12.
[0047] The working principle is that during feeding, the packaging bag is hoisted above the feeding bin 10 and then slowly lowered. Under the gravity of the packaging bag, the bin cover 20 is pushed to open until the bin cover 20 abuts against the supporting inclined plane 11. When the bin cover 20 abuts against the supporting inclined plane 11, the bin cover 20 is kept in a state of abutting against the supporting inclined plane 11 through the action of the second limiting component 30. Then, by driving the cutting knife 14, the bottom of the packaging bag is cut to break the packaging bag, so that the powder can smoothly enter the feeding bin 10. During the feeding process, the first driving mechanism 42 in the bag pushing device 40 drives the push plate 41 to continuously beat and squeeze the packaging bag, so that the powder can be fed into the feeding bin 10 more smoothly and quickly. When the feeding is completed, the packaging bag is taken out. At the same time, the unlocking cylinder 35 drives the second limiting block 32 to move, unlocks the bin cover 20, and the bin cover 20 is reset under the action of the first elastic member to seal the feeding bin 10 and prevent the dust therein from flying out of the feeding bin 10.
[0048] Embodiment 2
[0049] According to the attached drawings of the specification Figures 7-14 As shown, the difference between this embodiment and Embodiment 1 is that a crushing mechanism 50 and a detachable screen 61 are further provided at the feeding port 12. The crushing mechanism 50 is located above the screen 61. The crushing mechanism 50 includes a first grid plate 51 and a second grid plate 52 arranged in parallel. The first grid plate 51 is fixedly installed in the feeding port 12, and the second grid plate 52 is located above the first grid plate 51. A third chute is also provided at the feeding port 12, and the second grid plate 52 slides in the third chute. A second driving mechanism 53 for driving the second grid plate 52 to reciprocate is also installed on one side of the second grid plate 52. In this embodiment, the second driving mechanism 53 includes a motor, a turntable, and a connecting plate. The turntable is connected to the output end of the motor, one end of the connecting plate is rotatably connected to the eccentric position of the turntable, and the other end of the connecting plate is rotatably connected to one side of the second grid plate 52. When the motor drives the turntable to rotate, the second grid plate 52 can be driven to reciprocate along the third chute.
[0050] In this embodiment, the grid gap of the second grid plate 52 is larger than that of the first grid plate 51, so that large pieces of powder can fall between the first grid plate 51 and the second grid plate 52 and be crushed by extrusion during the movement of the second grid plate 52 to form small pieces of powder.
[0051] In this embodiment, a screen installation port 63 is further provided on the side of the feeding bin 10. The installation port is inclined, and a fixing groove 64 for clamping the screen 61 is also provided on the side of the feeding bin 10 away from the screen installation port 63. When the screen 61 is pushed in from the installation port, the right end can be clamped in the fixing groove 64 and rotated to the horizontal position along the fixing groove 64 to filter the powder.
[0052] In this embodiment, in order to facilitate the installation of the screen 61, an extension rod 62 is further provided on the side of the screen 61 away from the fixing groove 64, and a second chute 65 for the extension rod 62 to pass through is provided at the screen installation port 63. The setting of the extension rod 62 can facilitate driving the screen 61 to rotate to the horizontal position to provide a better screening effect.
[0053] At the bottom of the second sliding groove 65, a third limiting groove 71 is further provided. A third limiting block 72 is slidably connected in the third limiting groove 71, and a third elastic member 73 is connected between the third limiting block 72 and the third limiting groove 71. In this embodiment, the third elastic member 73 is a compression spring. An arc-shaped groove is further provided at one end of the third limiting block 72 facing the extension rod 62. When the extension rod 62 moves to the bottom of the second sliding groove 65, it can push the third limiting block 72 to move. Under the action of the third elastic member 73, the arc-shaped groove on the third limiting block 72 is clamped at the extension rod 62, preventing the screen 61 from jumping during operation and ensuring the screening effect.
[0054] In this embodiment, flexible bristles are installed on the sides of both the screen installation opening 63 and the second sliding groove 65, which can effectively prevent material dust from flying out of the screen installation opening 63 and the second sliding groove 65.
[0055] The working principle of this embodiment is that during the feeding process, some agglomerated powder materials fall between the second grid plate 52 and the first grid plate 51. During the reciprocating movement of the second grid plate 52, they are crushed into small particle materials and enter the feeding port 12. At the same time, the lower screen 61 further screens the materials to prevent large particle materials from entering. When the screen 61 is blocked after long-term screening, the extension rod 62 is pulled to move in the second sliding groove 65, so that the screen 61 rotates along the fixed groove 64 until it reaches a position parallel to the screen installation opening 63, and then the screen 61 can be taken out from the screen installation opening 63 for cleaning or replacing with a new screen 61.
[0056] The directional terms mentioned in this utility model, such as "up", "down", "left", "right", etc., are only for better and clearer explanation and understanding of this utility model, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation to this utility model.
[0057] The above describes the preferred embodiments of this utility model, but it cannot be understood as a limitation to the claims. This utility model is not limited to the above embodiments, and its specific structure allows for changes. All changes made within the protection scope of the independent claims of this utility model are within the protection scope of this utility model.
Claims
1. A powder feeding device for high ductility concrete production, comprising a feeding bin, wherein the feeding bin is provided with a feeding port and a supporting slope for supporting a packaging bag, characterized in that: It also includes two "<"-shaped bin covers symmetrically arranged on both sides of the feeding bin, the middle part of the bin cover is rotatably connected to the feeding bin, a first elastic member is provided between the bin cover and the feeding bin, a first limit block for limiting the bin cover is provided on the top surface of the feeding bin, and a cutting knife for cutting the bottom of the packaging bag is provided inside the feeding bin.
2. A powder feeding device for high ductility concrete production according to claim 1, characterized in that: A second limiting assembly is also provided on the supporting inclined surface, and the second limiting assembly includes a second limiting block and a second elastic member. A first sliding groove is provided on the supporting inclined surface, and the second limiting block is slidably connected in the first sliding groove. One side of the second elastic member abuts against the second limiting block, and the other side of the second elastic member abuts against the side of the first sliding groove. The top surface of the second limiting block is an inclined surface, and the second limiting block is provided with a second limiting groove for limiting the bin cover.
3. A powder feeding device for high ductility concrete production according to claim 2, characterized in that: The second limit block is also connected to an unlocking cylinder, and two ends of the unlocking cylinder are respectively connected to the second limit block and the side wall of the first sliding groove.
4. A powder feeding device for producing high ductility concrete according to claim 1, characterized in that: The feeding port is also provided with a bag pushing device, which includes a push plate rotatably connected to the feeding bin and a first driving mechanism for driving the push plate to move.
5. A powder feeding device for producing high ductility concrete according to claim 1, characterized in that: A crushing mechanism is provided at the feeding port, and the crushing mechanism includes a first mesh plate and a second mesh plate arranged in parallel, the first mesh plate is fixedly installed in the feeding port, the second mesh plate is slidably connected in the feeding port, and the second mesh plate is connected to a second driving mechanism for driving the second mesh plate to reciprocate.
6. A powder feeding device for producing high ductility concrete according to claim 5, characterized in that: A screen is also provided below the feeding port.
7. A powder feeding device for producing high ductility concrete according to claim 6, characterized in that: A screen installation opening is also provided on the side of the feeding bin, a second slide groove is provided at the screen installation opening, an extension rod is connected to the screen, and the extension rod extends to the outside of the feeding bin through the second slide groove.
8. A powder feeding device for producing high ductility concrete according to claim 7, characterized in that: The bottom of the second slide groove is also connected to a third limiting groove, and a third limiting block is slidably connected in the third limiting groove. The third limiting block is connected to the feeding bin through a third elastic member, and an arc-shaped groove is formed on the third limiting block.
9. A powder feeding device for producing high ductility concrete according to claim 7, characterized in that: Flexible bristles are installed on the sides of the screen installation opening and the second slide groove.