Pneumatic conveying device for cement discharge

Abstract

The utility model relates to cement delivery technical field especially relates to a cement warehouse uses pneumatic conveying device, the cement warehouse uses pneumatic conveying device includes: storage bin, discharge pipe, conveying pipe, pneumatic conveying pump, fixed disc, knock block, mounting plate, first baffle, second baffle, first limit board, second limit board, clamping block, first spring, rotary disc, first extrusion block, second extrusion block, second spring, worm wheel, worm and motor, the bottom of storage bin is connected with discharge pipe, and discharge pipe is connected with conveying pipe, and the output end of pneumatic conveying pump is connected with conveying pipe, the fixed disc is fixedly connected with discharge pipe outer wall, and knock block slides in the fixed disc, first baffle, second baffle are rotatively connected in mounting plate, and the both are connected through clamping block and limit board. The utility model provides cement warehouse uses pneumatic conveying device to have the advantages such as good anti -blocking effect, drive component protection in place, stable and reliable operation.

Description

Technical Field

[0001] This utility model relates to the field of cement conveying technology, and in particular to a pneumatic conveying device for cement discharge. Background Technology

[0002] The pneumatic conveying system for cement warehousing is a material conveying device used in cement production, storage, and transfer scenarios. Its core function is to use a high-pressure airflow generated by a pneumatic conveying pump as a power source to guide cement stored in the silo through a discharge pipe into a conveying pipe. The airflow then propels the cement along the conveying pipe, ultimately completing the transfer of cement from the silo to subsequent transfer equipment or storage facilities. This device is widely used in the cement industry's warehousing process due to its advantages such as high conveying efficiency, small footprint, low material loss, and ability to achieve closed conveying to reduce dust pollution. However, existing pneumatic conveying devices for cement discharge still have many shortcomings in actual operation. First, cement is prone to absorbing moisture and clumping. During the process of falling and conveying through the discharge pipe, the material is easily accumulated and adhered to the inner wall of the discharge pipe. The existing device lacks an effective anti-clogging structure, and it is difficult to completely avoid the discharge pipe blockage by relying solely on airflow thrust. Once a blockage occurs, the machine must be stopped for cleaning, which seriously affects the discharge efficiency. Second, the drive components (such as worm gears and worms) in the existing device are mostly exposed and lack a dedicated protective structure. In the cement discharge scenario, a large amount of dust easily adheres to the meshing surfaces and rotating connections of the drive components, which not only aggravates component wear and reduces transmission efficiency, but may also cause the drive components to jam and fail, shortening the service life of the device.

[0003] Therefore, it is necessary to provide a new pneumatic conveying device for cement warehousing to solve the above-mentioned technical problems. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a pneumatic conveying device for cement warehousing.

[0005] The pneumatic conveying device for cement discharge provided by this utility model includes: a storage silo, a discharge pipe connected to the bottom of the storage silo, a conveying pipe connected to the discharge pipe, a pneumatic conveying pump provided on one side of the storage silo, and the output end of the pneumatic conveying pump connected to the conveying pipe through a pipeline; a fixed plate fixedly connected to the outer wall of the discharge pipe, and striking blocks equidistantly slidably connected inside the fixed plate, the striking blocks being used to strike the discharge pipe; an installation plate fixedly connected to the top of the conveying pipe, a first baffle and a second baffle rotatably connected to one end of the installation plate, the first baffle and the second baffle rotatably connected; a first limiting plate fixedly connected to the end of the first baffle away from the rotatable connection with the second baffle, and a second limiting plate fixedly connected to the end of the second baffle away from the rotatable connection with the first baffle, the second limiting plate symmetrically slidably connected to the interior of the second limiting plate, the second limiting plate engaging with the first limiting plate through the locking blocks.

[0006] Preferably, a first spring is fixedly and symmetrically connected inside the fixed plate at equal intervals. One end of the first spring is fixedly connected to the striking block, and the first spring pushes the striking block away from the discharge pipe.

[0007] Preferably, a rotating disk is rotatably connected to the outside of the discharge pipe, the rotating disk is sleeved on the outside of the fixed disk, and a first extrusion block is fixedly connected at equal intervals inside the rotating disk. The first extrusion block is used to extrude the striking block, so that the striking block strikes the discharge pipe.

[0008] Preferably, a groove is provided at one end of the first extrusion block near the rotating disk, and a second extrusion block is slidably connected in the groove. A second spring is provided in the groove, and the elastic force of the second spring is greater than that of the first spring. One end of the second spring is fixedly connected to the second extrusion block, and the other end of the second spring is fixedly connected to the inner wall of the first extrusion block.

[0009] Preferably, a worm gear is fixedly connected to the outer wall of the rotating disk, and a worm is fixedly connected to the top of the mounting plate, with the worm meshing with the worm gear; a motor is fixedly connected to the top of the mounting plate, and the output end of the motor is fixedly connected to the worm.

[0010] Preferably, the first limiting plate has symmetrical slots inside, and the card block is inserted into the slot.

[0011] Preferably, a third spring is fixedly connected to one end of each of the two locking blocks facing each other, and one end of the third spring is fixedly connected to the inner wall of the second limiting plate. The third spring pushes the two locking blocks away from each other.

[0012] Preferably, each of the two card blocks is fixedly connected to a push post at the ends that are far apart from each other, and the push post is used to push the two card blocks closer to each other.

[0013] Compared with related technologies, the pneumatic conveying device for cement warehousing provided by this utility model has the following advantages: I. Strengthen anti-blockage capabilities to ensure stable outbound efficiency To address the problem of existing devices lacking effective anti-clogging structures and prone to blockage due to cement accumulation in the discharge pipe, this invention achieves efficient anti-clogging through a multi-stage extrusion and impact structure. The impact blocks, slidably connected within the fixed disc, work in conjunction with a first and second extrusion block driven by a rotating disc. These blocks sequentially extrude the impact blocks at an angle, and the second spring, with a greater elasticity than the first spring, provides additional thrust after the impact blocks initially contact the discharge pipe, significantly increasing the impact force. This design effectively dislodges clumps of cement adhering to the inner wall of the discharge pipe, preventing material accumulation and blockage. It eliminates the need for frequent shutdowns for cleaning, significantly ensuring continuous cement discharge and improving overall conveying efficiency. II. Improve the protection of drive components and extend the service life of the device. Given the shortcomings of existing devices where the drive components are exposed and susceptible to dust corrosion, this invention utilizes a protective structure formed by the cooperation of a first baffle, a second baffle, and a mounting plate to enclose the drive components such as the worm gear and worm, preventing direct contact between cement dust and the drive components. Simultaneously, the baffle is quickly fixed using a locking block and slot, while the push-post design facilitates opening and maintenance of the baffle, ensuring both effective protection and ease of operation. This structure effectively reduces dust adhesion to the meshing surfaces and rotating parts of the drive components, reduces component wear, prevents transmission jamming and failure, and extends the service life and maintenance cycle of the device. Attached Figure Description

[0014] Figure 1 A schematic diagram of the pneumatic conveying device for cement warehousing provided by this utility model; Figure 2 for Figure 1 A schematic diagram of the cross-sectional structure of the second limiting plate shown; Figure 3 for Figure 1 The diagram shows the structure after the first and second baffles are opened. Figure 4 for Figure 3 A schematic diagram of the cross-sectional structure of the rotating disk shown; Figure 5 for Figure 4 The diagram shows a cross-sectional view of the first extrusion block.

[0015] The following are the labels in the diagram: 1. Storage bin; 2. Discharge pipe; 3. Conveying pipe; 4. Pneumatic conveying pump; 5. Fixed plate; 6. Striking block; 7. Mounting plate; 8. First baffle; 9. Second baffle; 10. First limiting plate; 11. Second limiting plate; 12. Clamping block; 13. First spring; 14. Rotary disc; 15. First extrusion block; 16. Second extrusion block; 17. Second spring; 18. Worm gear; 19. Worm; 20. Motor; 21. Third spring; 22. Push column. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0017] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0018] Please see Figures 1 to 5A pneumatic conveying device for cement discharge includes: a storage silo 1, a discharge pipe 2 connected to the bottom of the storage silo 1, a conveying pipe 3 connected to the discharge pipe 2, a pneumatic conveying pump 4 provided on one side of the storage silo 1, the output end of the pneumatic conveying pump 4 being connected to the conveying pipe 3 via a pipeline; a fixed plate 5 fixedly connected to the outer wall of the discharge pipe 2, and striking blocks 6 equidistantly slidably connected inside the fixed plate 5, the striking blocks 6 being used to strike the discharge pipe 2; an mounting plate 7 fixedly connected to the top of the conveying pipe 3, a first baffle 8 and a second baffle 9 rotatably connected to one end of the mounting plate 7, the first baffle 8 and the second baffle 9 being rotatably connected; a first limiting plate 10 fixedly connected to the end of the first baffle 8 away from the rotatable connection with the second baffle 9, and a second limiting plate 11 fixedly connected to the end of the second baffle 9 away from the rotatable connection with the first baffle 8, the second limiting plate 11 being symmetrically slidably connected to the interior of the second limiting plate 11, the second limiting plate 11 being engaged with the first limiting plate 10 through the locking blocks 12. The first limiting plate 10 has symmetrically formed slots inside, into which the locking blocks 12 are engaged. A third spring 21 is fixedly connected to one end of each of the two locking blocks 12 facing each other. One end of the third spring 21 is fixedly connected to the inner wall of the second limiting plate 11, and the third spring 21 pushes the two locking blocks 12 away from each other. A push post 22 is fixedly connected to one end of each of the two locking blocks 12 away from each other, and the push post 22 is used to push the two locking blocks 12 closer together.

[0019] It should be noted that: the striking block 6 strikes the discharge pipe 2 to prevent the discharge pipe 2 from becoming blocked; the two locking blocks 12 are designed at an angle with their ends facing away from each other and close to the slot.

[0020] Please see Figures 3 to 5 A first spring 13 is symmetrically and equidistantly fixedly connected inside the fixed disk 5. One end of the first spring 13 is fixedly connected to the striking block 6, and the first spring 13 pushes the striking block 6 away from the discharge pipe 2. A rotating disk 14 is rotatably connected to the outside of the discharge pipe 2. The rotating disk 14 is sleeved on the outside of the fixed disk 5. A first extrusion block 15 is equidistantly and fixedly connected inside the rotating disk 14. The first extrusion block 15 is used to extrude the striking block 6, so that the striking block 6 strikes the discharge pipe 2. A groove is opened at one end of the first extrusion block 15 near the rotating disk 14. A second extrusion block 16 is slidably connected in the groove. A second spring 17 is provided in the groove. The elastic force of the second spring 17 is greater than that of the first spring 13. One end of the second spring 17 is fixedly connected to the second extrusion block 16, and the other end of the second spring 17 is fixedly connected to the inner wall of the first extrusion block 15. A worm gear 18 is fixedly connected to the outer wall of the rotating disk 14, and a worm 19 is fixedly connected to the top of the mounting plate 7. The worm 19 meshes with the worm gear 18. A motor 20 is fixedly connected to the top of the mounting plate 7, and the output end of the motor 20 is fixedly connected to the worm 19.

[0021] It should be noted that the first baffle 8, the second baffle 9, and the mounting plate 7 work together to protect the worm gear 18 and the worm 19. The striking block 6 and the first extrusion block 15 are both angled on opposite sides. The second extrusion block 16 is angled at the same angle as the first extrusion block 15. The first extrusion block 15 and the second extrusion block 16 successively extrude the striking block 6 at the angle, causing the striking block 6 to strike the discharge pipe 2. The rotating disk 14 drives the first extrusion block 15 to rotate, and the first extrusion block 15 extrudes the striking block 6 at an angle. When one end of the striking block 6 contacts the outer wall of the discharge pipe 2, the other end of the striking block 6 just disengages from the first extrusion block 15. However, if the striking force of the striking block 6 is small at this time, it is difficult to prevent the discharge pipe 2 from being blocked. As the rotating disk 14 continues to rotate, the second extrusion block 16 extrudes the striking block 6, providing striking force to the striking block 6. During this process, the second extrusion block 16 gradually compresses the second spring 17 and retracts into the first extrusion block 15, avoiding rigid extrusion that could damage the striking block 6 and the second extrusion block 16.

[0022] The working principle of the pneumatic conveying device for cement warehousing provided by this utility model is as follows: This pneumatic conveying device for cement warehousing mainly achieves cement warehousing and conveying through the coordinated operation of a pneumatic conveying module, an anti-clogging impact module, a protection module, and a drive module. The working principles of each module are as follows: I. Basic Pneumatic Conveying Operation The cement stored in the storage silo 1 enters the conveying pipe 3 through the discharge pipe 2 connected to the bottom. After the pneumatic conveying pump 4 installed on one side of the storage silo 1 is started, its output end delivers high-pressure airflow into the conveying pipe 3. Under the power of the airflow, the cement completes the outbound conveying process along the conveying pipe 3. II. Working process of the anti-clogging tapping module Drive power transmission: A motor 20 is fixedly mounted on the top of the mounting plate 7, which is fixedly connected to the top of the conveying pipe 3. After the motor 20 starts, its output end drives the worm gear 19, which is fixedly connected to it, to rotate. Because the worm gear 19 meshes with the worm wheel 18 fixed on the outer wall of the rotating disk 14, which is rotatably connected to the outside of the discharge pipe 2, and the rotating disk 14 is sleeved on the outside of the fixed disk 5, which is fixedly connected to the outer wall of the discharge pipe 2, the rotation of the worm gear 19 drives the worm wheel 18 and the rotating disk 14 to rotate synchronously. Initial compression by striking block 6: When the rotating disk 14 rotates, the first compression block 15, which is fixedly connected at equal intervals inside it, rotates along with it. Since the side facing each other of striking block 6 and the first compression block 15 is beveled, and striking block 6 is slidably connected to the inside of fixed disk 5 at equal intervals, the first compression block 15 gradually compresses striking block 6 through the bevel, causing striking block 6 to overcome the elastic force of the first spring 13, which is fixedly connected at equal intervals and symmetrically inside fixed disk 5 (one end of the first spring 13 is fixedly connected to striking block 6 and pushes striking block 6 away from discharge pipe 2) and move towards discharge pipe 2. Secondary extrusion enhances the impact force: When one end of the striking block 6 contacts the outer wall of the discharge pipe 2, the other end of the striking block 6 just disengages from the first extrusion block 15. To avoid insufficient impact force at this time, which would make it difficult to prevent the discharge pipe 2 from becoming blocked, the rotating disk 14 continues to rotate, driving the first extrusion block 15 to move. The second extrusion block 16 (which is angled at the same angle as the first extrusion block 15) is slidably connected in the groove opened at one end of the rotating disk 14 near the first extrusion block 15, and then extrudes the striking block 6 at the angle. Because the second spring 17 installed in the chute has a greater elastic force than the first spring 13, and one end of the second spring 17 is fixedly connected to the second extrusion block 16 and the other end is fixedly connected to the inner wall of the first extrusion block 15, the second extrusion block 16 provides a stronger pushing force to the striking block 6 under the action of the second spring 17, causing the striking block 6 to forcefully strike the outer wall of the discharge pipe 2. During this process, the second extrusion block 16 gradually compresses the second spring 17 and retracts into the interior of the first extrusion block 15, avoiding rigid extrusion that could damage the striking block 6 and the second extrusion block 16, thereby effectively preventing cement from accumulating and clogging in the discharge pipe 2. Reset of striking block 6: After the first pressing block 15 and the second pressing block 16 are released from the pressing of the striking block 6 as the rotating disk 14 rotates, the striking block 6 is reset under the elastic force of the first spring 13, waiting for the next pressing and striking. III. Working Process of the Protection Module Baffle closure and fixation: The first baffle 8 and the second baffle 9 (rotatably connected) are rotatably connected to one end of the rotating mounting plate 7, bringing them closer together and rotating them to a fitted state. At this time, the first baffle 8 moves away from the first limiting plate 10 fixedly connected to the rotating connection point of the second baffle 9, and aligns with the second limiting plate 11 fixedly connected to the second baffle 9 at the end away from the rotating connection point. The symmetrically slidingly connected locking blocks 12 inside the second limiting plate 11 move away from each other under the pushing force of the third spring 21 (the other end of the third spring 21 is fixedly connected to the inner wall of the second limiting plate 11) which is fixedly connected to the opposite ends of the two locking blocks 12. Because the opposite ends of the locking blocks 12 and the end closest to the locking groove are designed at an angle, the locking blocks 12 smoothly engage in the symmetrically opened locking grooves inside the first limiting plate 10, realizing the locking and fixing of the first baffle 8 and the second baffle 9. Protective function achieved: After being closed and fixed, the first baffle 8, the second baffle 9 and the mounting plate 7 cooperate with each other to form a protective structure, which encloses the worm gear 18 and the worm 19, thus protecting the worm gear 18 and the worm 19. To open the baffle: Press the push column 22, which is fixedly connected to the two locking blocks 12 at one end and is far apart from each other. The push column 22 pushes the two locking blocks 12 to overcome the elastic force of the third spring 21 and move them closer to each other, so that the locking blocks 12 are disengaged from the slots and the locking between the first limiting plate 10 and the second limiting plate 11 is released. Then the first baffle 8 and the second baffle 9 can be rotated to open it.

[0023] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A pneumatic conveying device for cement warehousing, characterized in that, include: A storage silo (1) is connected to a discharge pipe (2) at its bottom. A conveying pipe (3) is fixedly connected to the discharge pipe (2). A pneumatic conveying pump (4) is provided on one side of the storage silo (1). The output end of the pneumatic conveying pump (4) is connected to the conveying pipe (3) through a pipe. A fixed plate (5) is fixedly connected to the outer wall of the discharge pipe (2). A striking block (6) is equidistantly slidably connected inside the fixed plate (5). The striking block (6) is used to strike the discharge pipe (2). A mounting plate (7) is fixedly connected to the top of the conveying pipe (3). A first baffle (8) and a second baffle (9) are rotatably connected at one end of the top. The first baffle (8) and the second baffle (9) are rotatably connected. A first limiting plate (10) is fixedly connected at the end of the first baffle (8) away from the rotatable connection with the second baffle (9). A second limiting plate (11) is fixedly connected at the end of the second baffle (9) away from the rotatable connection with the first baffle (8). A locking block (12) is symmetrically slidably connected inside the second limiting plate (11). The second limiting plate (11) is locked to the first limiting plate (10) through the locking block (12).

2. The pneumatic conveying device for cement warehousing according to claim 1, characterized in that, The fixed plate (5) is symmetrically and equidistantly connected with a first spring (13). One end of the first spring (13) is fixedly connected to the striking block (6). The first spring (13) pushes the striking block (6) away from the discharge pipe (2).

3. The pneumatic conveying device for cement warehousing according to claim 2, characterized in that, The discharge pipe (2) is rotatably connected to a rotating disk (14), which is sleeved on the outside of the fixed disk (5). The rotating disk (14) is fixedly connected at equal intervals inside the rotating disk (14). The first extrusion block (15) is used to extrude the striking block (6), so that the striking block (6) strikes the discharge pipe (2).

4. The pneumatic conveying device for cement warehousing according to claim 3, characterized in that, The first extrusion block (15) has a groove at one end near the rotating disk (14), and a second extrusion block (16) is slidably connected in the groove. A second spring (17) is provided in the groove, and the elastic force of the second spring (17) is greater than that of the first spring (13). One end of the second spring (17) is fixedly connected to the second extrusion block (16), and the other end of the second spring (17) is fixedly connected to the inner wall of the first extrusion block (15).

5. The pneumatic conveying device for cement warehousing according to claim 3, characterized in that, A worm gear (18) is fixedly connected to the outer wall of the rotating disk (14), and a worm (19) is fixedly connected to the top of the mounting plate (7). The worm (19) meshes with the worm gear (18). A motor (20) is fixedly connected to the top of the mounting plate (7), and the output end of the motor (20) is fixedly connected to the worm (19).

6. The pneumatic conveying device for cement warehousing according to claim 1, characterized in that, The first limiting plate (10) has symmetrical slots inside, and the card block (12) is inserted into the slot.

7. The pneumatic conveying device for cement warehousing according to claim 6, characterized in that, A third spring (21) is fixedly connected to one end of each of the two locking blocks (12) facing each other. One end of the third spring (21) is fixedly connected to the inner wall of the second limiting plate (11). The third spring (21) pushes the two locking blocks (12) away from each other.

8. The pneumatic conveying device for cement warehousing according to claim 7, characterized in that, Each of the two card blocks (12) is fixedly connected to a push post (22) at one end that is far apart from each other. The push post (22) is used to push the two card blocks (12) closer to each other.

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