Multi-rod type blanking unblocking machine for cement bunker bottom

Abstract

The utility model discloses a multi-rod type blanking unblocking machine at the bottom of a cement silo, which comprises a crushing chamber, a crushing device and a poking rod, the upper part of the crushing chamber is communicated with a blanking channel at the bottom of the cement silo, and the crushing chamber is connected with a discharge pipe; the crushing device is rotatably arranged in the crushing chamber and comprises two crushing shafts which are transversely arranged side by side, and staggered crushing cutters are arranged on the crushing shafts; at least two material poking rods penetrate through the crushing device, the upper ends of the material poking rods can stretch into the discharging channel, the material poking rods are evenly distributed in the crushing chamber, the upper portions of the material poking rods are movably arranged in the crushing chamber, the crushing device is connected with a first driving device, and the material poking rods are connected with a second driving device. The multiple poking rods which are evenly distributed and can stretch into the discharging channel are arranged in the crushing chamber, multi-point poking and crushing can be carried out at the same time, crushed cement blocks are effectively prevented from being accumulated and blocked again, discharging is smoother, continuous discharging operation of the cement silo can be achieved, and the cement silo can be prevented from being blocked. And the device is particularly suitable for unblocking and crushing operation of a large-section or large-span blanking channel.

Description

Technical Field

[0001] This utility model belongs to the technical field of cement production and storage equipment, and specifically relates to a multi-rod type material discharge and unblocking machine for the bottom of a cement silo. Background Technology

[0002] Cement production requires homogenization, and the finished cement needs to be stored. Therefore, cement plants must have cement silos of a certain capacity, at least capable of storing 7 tons of production. Cement silos are generally cylindrical structures with a discharge channel on the bottom slab. Above the discharge channel, there is usually a vertical or inclined cone-shaped pressure-reducing structure to reduce the pressure exerted by the material's own weight on the discharge port at the bottom of the silo. During cement homogenization or storage, due to large storage volumes and long storage times, especially when no unloading has been performed for an extended period, cement tends to clump together below the pressure-reducing cone and within the discharge channel. This requires clearing and breaking up the clumps to prevent blockage of the discharge port, which would hinder discharge and affect unloading efficiency.

[0003] Most existing technologies still rely on traditional manual methods for clearing blockages, resulting in low efficiency and high safety risks. While some existing technologies use mechanical clearing devices to replace manual labor, most employ separate, step-by-step operations for clearing and crushing devices. The clearing devices come in two forms: those probing from the top of the silo and those probing from the bottom. The former is limited by the silo's structure, leading to issues such as inability to reach the material discharge channel and damage to the clearing equipment due to excessive torque. The latter overlaps with the crushing device's operating position, easily causing interference, and can only operate independently, resulting in low clearing efficiency and difficulty in ensuring continuous and smooth material discharge.

[0004] Patent CN212268388U discloses a cement silo bottom unblocking machine. By incorporating a single material-push rod that passes through the center of the crushing device and can move vertically into the center of the discharge channel, it integrates and coordinates the functions of material-push and crushing, effectively solving the problems of low efficiency and spatial interference in existing unblocking methods. However, this method, which pushes material from the center of the discharge channel, has a relatively small effective area. The crushed cement lumps may still be relatively large, and after the material-push rod moves downwards, the cement lumps tend to pile up again, making it difficult for them to pass smoothly through the discharge channel, resulting in incomplete unblocking or poor coordination. Utility Model Content

[0005] The purpose of this invention is to propose a multi-rod type material discharge and unblocking machine for the bottom of a cement silo, so as to solve the problem that the existing material discharge and unblocking machines for the bottom of cement silos have a small material-pumping action area and the efficiency of cement passing through the discharge channel is still low, which in turn affects the unloading efficiency of the cement silo.

[0006] This utility model is achieved through the following technical solution:

[0007] This utility model proposes a multi-rod type discharge and unblocking machine for the bottom of a cement silo, including a crushing chamber, a crushing device, and material-push rods. The upper part of the crushing chamber is connected to the discharge channel of the bottom of the cement silo, and the crushing chamber is connected to a discharge pipe. The crushing device is rotatably installed in the crushing chamber, and the upper part of the material-push rods is movable in the crushing chamber. When the material-push rods move upward, their upper ends can extend into the discharge channel. The crushing device includes two crushing shafts arranged horizontally side by side, and the crushing shafts are equipped with intersecting crushing blades. There are at least two material-push rods, each of which passes through the crushing device and its upper end can extend into the discharge channel. The material-push rods are evenly distributed in the crushing chamber. The crushing device is connected to a first driving device, and the material-push rods are connected to a second driving device.

[0008] Based on the above technical solution, by setting multiple material-pumping rods that can extend into the feeding channel in the crushing chamber, multi-point material-pumping and crushing can be carried out simultaneously. The material-pumping action surface covers the entire feeding channel and can even extend further into the pressure-reducing cone at the bottom of the cement silo. The crushing effect is good and effectively prevents the crushed cement blocks from accumulating and blocking again, thereby ensuring the continuous unobstructed flow of the feeding channel, greatly improving the clearing efficiency and unloading speed. It is especially suitable for clearing and crushing operations of feeding channels with large cross-sections or large unidirectional spans.

[0009] Preferably, there are two material-push rods, which are evenly distributed between the two crushing shafts. The advantage of this design is that the material-push action surfaces can overlap in the material discharge channel, expanding the material-push range and reducing the size of the cement blocks; the cement blocks tend to fall downward from the entire cross section, which is more conducive to the mixing and crushing operation below.

[0010] More preferably, the side wall of the crushing chamber is provided with a crushing block protruding inward. The crushing block is located at a position where the crushing device avoids the material feeding rod. The purpose of this design is to make up for the crushing blind spot formed by the crushing device avoiding the material feeding rod by setting the crushing block, further enhance the crushing effect, and prevent large cement lumps from directly entering the discharge pipe, causing blockage or affecting product quality.

[0011] Preferably, there are two material-push rods, which are respectively disposed between the crushing shaft and the side wall of the crushing chamber. The material-push rods are symmetrically arranged with respect to the center of the crushing chamber. The advantage of this design is that, while ensuring that the material-push action surface covers the entire discharge channel, only one crushing shaft is needed for the corresponding material-push rod position to avoid obstruction. The structural design is simpler and more conducive to reducing the interference of the material-push rods on the crushing device, and preventing large cement particles from directly entering the discharge pipe.

[0012] Preferably, the material feeding rod includes a rod body and a crushing cone. The crushing cone is located at the top of the rod body, and the upper part of the crushing cone is pointed. This design helps to reduce the resistance of the material feeding rod moving upward, and the tip of the crushing cone can quickly penetrate the cement block, thereby improving the crushing efficiency.

[0013] Preferably, the material feeding rod is provided with a gas channel, which is connected to high-pressure gas. The top of the material feeding rod is provided with an air blowing port, which is connected to the gas channel. The purpose of this design is to loosen the broken cement blocks more by impacting them with high-pressure gas, so that the cement blocks can pass through the feeding channel quickly and smoothly, avoiding secondary blockage.

[0014] Preferably, the first driving device connects to two crushing shafts simultaneously and drives the crushing shafts to rotate inward synchronously, so as to improve crushing uniformity and crushing efficiency.

[0015] Preferably, each of the material-discharging rods is connected to an independent second driving device. The second driving device drives each material-discharging rod to move up and down independently. This design allows the material-discharging rods to move up and down simultaneously, alternately, or operate as a single rod, thus flexibly responding to different blockage situations, maximizing the material-discharging effect, and further improving the blockage-clearing efficiency. At the same time, it also allows the material-discharging and blockage-clearing machine to operate in a standby mode, reducing the frequency of equipment maintenance and ensuring the continuity of production when usage needs are met or maintenance conditions are inconvenient.

[0016] Preferably, the first driving device is a hydraulic motor or a geared motor, and the second driving device is a hydraulic cylinder or an electric push rod.

[0017] Preferably, a valve is provided at the connection between the crushing chamber and the feeding channel. The valve is used to control the opening and closing of the feeding channel and the crushing chamber. The purpose of this design is to control the feeding state as needed when the cement is discharged from the cement silo, so as to avoid the cement accumulating in the crushing chamber for a long time and solidifying twice, which would cause the mixing device to be stuck.

[0018] Beneficial effects

[0019] One of the above technical solutions has the following advantages or beneficial effects:

[0020] (1) By setting multiple material-push rods in the crushing chamber to work with the crushing device and extend into the material discharge channel, multiple points of material-push and crushing can be carried out simultaneously. The material-push action surface covers the entire material discharge channel and can even extend further into the pressure-reducing cone at the bottom of the cement silo. The crushing effect is good and effectively prevents the crushed cement blocks from accumulating and blocking again, thereby ensuring the continuous smooth flow of the material discharge channel, greatly improving the clearing efficiency and unloading speed, so that the cement silo can unload continuously and smoothly. It is especially suitable for continuous unloading operations of cement silos with large cross-sections or large spans of material discharge channels.

[0021] (2) By evenly distributing the material-push rods between the two crushing shafts, the material-push action surfaces can overlap in the material discharge channel, covering the cross-section of the material discharge channel and reducing the size of the cement blocks entering the crushing chamber. The cement blocks tend to fall downwards from the entire cross-section, making the material discharge smoother and facilitating the mixing and crushing operation below, thereby optimizing the synergistic effect of material-push and crushing. At the same time, by superimposing the crushed blocks on the side wall of the crushing chamber, the crushing blind area formed by the avoidance of the material-push rods can be made up, further enhancing the crushing effect and improving the smoothness and quality assurance of the cement silo unloading.

[0022] (3) By symmetrically arranging the material-push rod relative to the center of the crushing chamber, it is possible to cover the entire material feeding channel with the material-push action surface. Only one crushing shaft needs to be designed to avoid the material-push rod position. The structural design is simpler and more conducive to reducing the interference of the material-push rod on the crushing device and further ensuring the crushing effect.

[0023] (4) By independently driving each material-push rod to move up and down through the second drive device, the material-push rod can move up and down simultaneously, or move up and down alternately, or operate as a single rod, etc., which can flexibly cope with different blockage situations, ensure the maximum material-push effect, and further improve the blockage clearing efficiency; at the same time, it can also make the material-push blockage clearing machine a standby working condition, which can reduce the maintenance frequency of the equipment and ensure the continuity of production when the usage needs are met or the maintenance conditions are inconvenient. Attached Figure Description

[0024] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0025] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0026] Figure 2 This is a cross-sectional view of Embodiment 1 of the present utility model;

[0027] Figure 3 This is a longitudinal cross-sectional view of Embodiment 1 of the present invention;

[0028] Figure 4 This is a cross-sectional view of Embodiment 2 of the present invention;

[0029] In the diagram: 1. Feeding channel; 2. Valve; 21. Gate; 22. Gate cylinder; 3. Crushing chamber; 4. Crushing device; 41. Crushing shaft; 42. Crushing blade; 5. Feeding rod; 51. Rod body; 52. Crushing cone; 53. Gas channel; 54. Air inlet; 6. First drive device; 61. Power device; 62. Transmission assembly; 7. Second drive device; 8. Crushed block; 9. Discharge pipe. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.

[0031] Example 1

[0032] This utility model provides a multi-rod type material feeding and unblocking machine for the bottom of a cement silo, including a crushing chamber 3, a crushing device 4, and a material feeding rod 5;

[0033] Among them, such as Figure 1 As shown, the upper part of the crushing chamber 3 connects to the bottom of the cement silo via the discharge channel 1. A valve 2 is installed at the connection between the crushing chamber 3 and the discharge channel 1 to control the opening and closing of the connection between the discharge channel 1 and the crushing chamber 3. The valve 2 adopts a combination structure of a gate plate 21 and a gate cylinder 22. The gate cylinder 22 drives the gate plate 21 to move in and out of the connection space between the discharge channel 1 and the crushing chamber 3 to control the opening and closing of the connection between the discharge channel 1 and the crushing chamber 3. The valve 2 can also adopt other general structures, as long as it can realize the function of opening and closing the connection between the discharge channel 1 and the crushing chamber 3.

[0034] A discharge pipe 9 is connected to the lower or side lower part of the crushing chamber 3 for discharging the crushed cement. The cement can be discharged using conventional pneumatic conveying.

[0035] like Figure 2 As shown, the crushing device 4 is rotatably mounted inside the crushing chamber 3 via a first driving device 6. The crushing device 4 includes two crushing shafts 41 arranged horizontally side by side. The two ends of the crushing shafts 41 are connected to the wall of the crushing chamber 3 via movable structures such as bearing seats. The crushing shafts 41 are equipped with interlaced crushing blades 42. The two crushing shafts 41 are connected to the first driving device 6. Preferably, the first driving device 6 is a set, including a power unit 61 and a transmission assembly 62. The power unit 61 is a hydraulic motor or a geared motor, and the transmission assembly 62 is a set of meshing transmission gears. When the first driving device 6 is working, the transmission assembly 62 drives the two crushing shafts 41 to rotate synchronously inward. The crushing blades 42 interlacedly cut the cement blocks entering the crushing chamber 3, making them uniformly crushed.

[0036] The crushing chamber 3 is equipped with at least two material-push rods 5, each of which passes through the crushing device 4 and is connected to a second driving device 7. The second driving device 7 drives the material-push rods 5 to move up and down, so that their upper parts can be moved within the crushing chamber 3. When the material-push rods 5 move upward, their upper ends can extend into the feeding channel 1 to poke the cement lumps within the feeding channel 1. The number of material-push rods 5 is determined and designed according to the actual diameter of the feeding channel 1 during operation, and they are evenly distributed within the crushing chamber 3.

[0037] like Figure 3As shown, in this embodiment, there are two material-push rods 5, which are evenly distributed between the two crushing shafts 41 so that the material-push action surfaces overlap in the material discharge channel, reducing the size of the cement blocks; and facilitating the cement blocks to fall downwards from the entire cross section, which is more conducive to the mixing and crushing operation below, resulting in better synergistic effects of clearing blockages and crushing. Preferably, the material-push rods 5 are respectively set close to the connecting shaft ends 411 of the crushing shaft 41 and the crushing chamber 3, which can ensure that the material-push action surface covers the entire cross section of the material discharge channel 1, reduce the mutual interference between the material-push rods 5 and between the material-push rods 5 and the crushing device 4, and make the cement blocks more inclined to fall from the center position, resulting in better mixing and crushing effects below.

[0038] Preferably, the second drive device 7 connecting the material-discharging rod 5 can be a powerful hydraulic cylinder or an electric push rod. Each material-discharging rod 5 is connected to an independent second drive device 7, and each material-discharging rod 5 can move up and down independently. In actual operation, depending on the volume, hardness, and other blockage conditions of the cement lumps in the material discharge channel 1, the second drive device 7 drives the material-discharging rods 5 to move up and down simultaneously, alternately, or operate as a single rod, etc. This allows the material discharge unblocking machine to have a backup configuration, reducing the frequency of equipment maintenance when usage needs are met or maintenance conditions are inconvenient, thus ensuring continuous production.

[0039] Furthermore, such as Figure 3 As shown, the material-push rod 5 includes a rod body 51 and a crushing cone 52. The crushing cone 52 is located at the top of the rod body 51. The lower part of the crushing cone 52 covers the clearance of the material-push rod 5 by the crushing device 4. The upper part of the crushing cone 52 is cone-shaped. When the material-push rod 5 moves upward to push the material, the cone-shaped top can quickly penetrate the cement block, which helps to reduce the upward resistance and improve the crushing effect of the cement block.

[0040] Furthermore, the material-push rod 5 is provided with a gas channel 53, which is connected to high-pressure gas. The top of the material-push rod 5 is provided with an air blowing port 54, which is connected to the gas channel 53. When the material-push rod 5 breaks the cement block, the high-pressure gas sprayed from the air blowing port 54 can impact the cement block, making the broken cement block more loose and less likely to accumulate again and form new blockages. This makes it easier for the cement block to pass through the material discharge channel 1 quickly and smoothly.

[0041] Furthermore, at the position where the crushing device 4 avoids the material feeding rod 5, the side wall of the crushing chamber 3 is provided with a crushing block 8 protruding inward. The crushing block 8 and the crushing blade 42 of the stirring shaft extend or intersect, making up for the crushing blind area formed by the crushing device 4 avoiding the material feeding rod 5, further enhancing the crushing effect, and preventing large cement lumps from directly entering the discharge pipe 9, causing blockage or affecting product quality.

[0042] Example 2

[0043] like Figure 4 As shown, this embodiment provides a multi-pole type material discharge and unblocking machine for the bottom of a cement silo, which differs from Embodiment 1 in that:

[0044] There are two material-push rods 5. The material-push rods 5 are located between the crushing shaft 41 and the side wall of the crushing chamber 3, that is, between one of the crushing shaft 41 and the side wall of the crushing chamber 3. The material-push rods 5 are symmetrically arranged with respect to the center of the crushing chamber 3. The specific setting position is determined according to the cross-sectional size of the material discharge channel 1, and the design is based on the principle that the working surface can cover the entire cross-section.

[0045] Preferably, according to the crushing effect requirements, the crushing shaft 41 is provided with crushing blocks 8 to fill the crushing blind area at the avoidance position of the material feeding rod 5. The crushing blocks 8 located between the two stirring shafts can be set to protrude upward from the bottom of the stirring chamber, or other fixing methods can be adopted. The crushing blocks 8 and the crushing blades 42 on the stirring shaft that do not need to be avoided are intersected.

[0046] The advantages of this embodiment are as follows: For each position of the material-push rod 5, only one crushing shaft 41 needs to be designed to avoid the obstruction. The overall structural design and processing of the crushing device 4 are simpler, and the interference of the material-push rod 5 on the crushing device 4 can be reduced, thereby reducing the weakening of the crushing effect caused by the obstruction and preventing large cement particles from directly entering the discharge pipe 9. At the same time, this design can better adapt to changes in the size of the discharge channel 1, increase the spacing between the material-push rods 5, further reduce the interference between the material-push rods 5 and between the material-push rods 5 and the wall of the discharge channel 1, and ensure the smoothness of the material-push operation.

[0047] In this embodiment, the other components not described, as well as the relative positions and connections between the components, are the same as in Embodiment 1.

[0048] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the protection scope of the present utility model.

Claims

1. A multi-rod unblocking machine for cement bunker bottom, comprising a crushing chamber, a crushing device and a poking rod, the crushing chamber is connected with a cement bunker bottom unloading channel, and the crushing chamber is connected with a discharging pipe; the crushing device is rotatably arranged in the crushing chamber, and the upper part of the poking rod is movably arranged in the crushing chamber, and when the poking rod moves upward, the upper end of the poking rod can extend into the unloading channel; characterized in that, The crushing device comprises two crushing shafts arranged transversely and side by side, and the crushing shafts are provided with crushing knives staggered with each other; the poking rods are at least two, each of which penetrates the crushing device and has an upper end extending into the discharging channel, the poking rods are uniformly arranged in the crushing chamber, the crushing device is connected with a first driving device, and the poking rods are connected with a second driving device.

2. A multi-rod unblocker for the bottom of a cement silo according to claim 1, characterized in that: The poking rods are two, and the poking rods are uniformly arranged between the two crushing shafts.

3. A multi-rod unblocker for a cement silo bottom according to claim 2, characterized in that: The side wall of the crushing chamber is inwardly provided with crushing blocks, and the crushing blocks are arranged at positions where the crushing device avoids the poking rods.

4. The multi-rod unblocker for silo floor according to claim 1, characterized in that: The poking rods are two, and the poking rods are arranged between the crushing shafts and the side wall of the crushing chamber, and the poking rods are symmetrically arranged with respect to the center of the crushing chamber.

5. The multi-rod unblocker for silo floor according to claim 1, characterized in that: The poking rod comprises a rod body and a crushing cone, the crushing cone is arranged at the top end of the rod body, and the upper part of the crushing cone is in the shape of a sharp cone.

6. A multi-rod unblocker for silo floors as defined in claim 1, characterized in that: The poking rod is provided with a gas passage, the gas passage is communicated with high-pressure gas, the top of the poking rod is provided with a gas blowing port, and the gas blowing port is communicated with the gas passage.

7. The multi-rod unblocker for silo floor according to claim 1, characterized in that: The first driving device is connected with the two crushing shafts at the same time and drives the crushing shafts to rotate inward synchronously.

8. The multi-rod unblocker for silo floor according to claim 1, characterized in that: The poking rods are respectively connected with independent second driving devices, and the second driving devices drive each poking rod to move up and down independently.

9. The multi-rod unblocker for silo floor according to claim 1, characterized in that: The first driving device is a hydraulic motor or a reduction motor, and the second driving device is a hydraulic cylinder or an electric push rod.

10. The multi-rod unblocker for silo floor according to claim 1, characterized in that: The communication part of the crushing chamber and the discharging channel is provided with a valve, and the valve is used to control the on-off of the communication between the discharging channel and the crushing chamber.

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