Safe dust bag changing device

Abstract

A dust bag changing device for safety control is characterized in that it includes a base (1), a feeding component (2), a baffle (3) and a moving component (5). The feeding component (2) is arranged in the middle of the base (1), the moving component (5) is connected to the lower end of the base (1), and the baffle (3) is connected to the upper end of the base (1). The base (1) includes columns (11) and crossbars (12). At least four columns (11) are installed perpendicular to the ground. Three crossbars (12) are installed at the bottom of the columns (11) and connected to adjacent columns (11). The top of the columns (11) is connected by the four crossbars (12). The unloading component (2) includes a hopper (21), a first unloading port (22), a second unloading port (23), and a cross-sectional flow regulating component (24). The hopper (21) is fixedly connected to the top crossbars (12) of the columns (11) and is located between the columns (11). The bottom surface of the hopper (21) is connected to the first unloading port (22). The first unloading port (22) is connected to the second unloading port (23) through the cross-sectional flow regulating component (24). By setting up a dust-controlling bag replacement device, the broken PTA bags can be placed on the replacement device, which can effectively prevent the broken bags from falling and injuring personnel when they are unpacking. At the same time, the PTA material is discharged from the hopper (21) of the replacement device into a new bag.

Description

Technical Field

[0001] This utility model relates to the technical field of bag replacement, and in particular to a safe dust control bag replacement device. Background Technology

[0002] PTA (Phytophthalic Acid) units, as key equipment in the production of terephthalic acid (PTA), are widely used in polyester production (especially PET manufacturing). The PTA powder produced is typically stored in silos and then transported via tank truck loading systems and baling machines, with baling machines accounting for more than half of the total outgoing product. During the baling, stacking, and bagging process, the bags are prone to damage due to factors such as bag quality, leading to PTA powder spillage. In such cases, the bags must be replaced and repackaged promptly.

[0003] Currently, the existing technology requires two forklifts to work together to change the PTA bag: the first forklift raises its forks to about 1 meter and fixes the new PTA bag on the forks; the second forklift lifts the PTA bag containing the broken bag above the new bag, aligning the bottom of the broken bag with the top of the new bag. Then, the person changing the bag stands below the broken bag, opens the bottom of the broken bag, and releases the material, thus completing the PTA bag change.

[0004] However, the above-mentioned bag-changing process has many problems. On the one hand, the unloading process generates a large amount of PTA spillage and dust, which not only wastes materials and increases production costs, but also poses a safety hazard of dust explosion. More importantly, when the bag-changing personnel stand under the broken bag lifted by the forklift to unpack it, the broken bag lacks any support or protection. If it falls accidentally, it can easily injure the personnel below, posing a serious safety risk.

[0005] On the other hand, the feed inlets used in existing bag-changing processes are mostly fixed structures, making it impossible to flexibly adjust the powder flow rate according to actual needs. Flow rate adjustment is crucial in PTA powder bag changing: if the flow rate is too high, powder will accumulate too quickly in the new bag, causing overflow, secondary waste, and increased dust; if the flow rate is too low, it will prolong the bag-changing time and affect production efficiency. Fixed feed inlets are difficult to adapt to bags with different degrees of damage and new bags of different sizes, severely restricting the safety and efficiency of bag-changing operations. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a safe dust bag changing device that provides support and protection during bag changing.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] A dust bag changing device for safety control includes a base, a feeding component, a baffle, and a moving component. The feeding component is disposed in the middle of the base, the moving component is connected to the lower end of the base, and the baffle is connected to the upper end of the base.

[0009] The base includes columns and crossbars. At least four columns are installed perpendicular to the ground. Three crossbars are installed at the bottom of each column, connecting adjacent columns. The top of each column is connected by the four crossbars.

[0010] The feeding component includes a feeding hopper, a first feeding port, a second feeding port, and a cross-sectional flow rate regulating component. The feeding hopper is fixedly connected to the upper end of the column and is located between the columns. The bottom surface of the feeding hopper is connected to the first feeding port, and the first feeding port is connected to the second feeding port through the cross-sectional flow rate regulating component.

[0011] Preferably, the cross-sectional flow regulating component includes a slide rail and a slide rail pressure strip. The slide rail pressure strip is fixedly installed on both sides of the first discharge port, and the slide rail is fixedly installed on both sides of the second discharge port. The second discharge port can move along the slide rail direction.

[0012] Preferably, both the first discharge port and the second discharge port are cylindrical.

[0013] Preferably, a support frame is provided on the top of the baffle.

[0014] Preferably, the hopper is in the shape of a truncated pyramid, and its bottom fits into the feed inlet of the first discharge port.

[0015] Preferably, the movable component includes at least four rollers.

[0016] More preferably, the rollers include omnidirectional wheels and directional wheels.

[0017] More preferably, the caster wheel is provided with a locking device.

[0018] This utility model has the following advantages and beneficial effects compared to the prior art:

[0019] (1) By setting up a safety control dust replacement device, the broken PTA bags are placed on the replacement device, which can effectively prevent the broken bags from falling and injuring personnel when the replacement personnel unpack the bags. At the same time, the PTA material is discharged from the hopper of the replacement device to the new bag, which can reduce PTA dust, reduce the risk of dust explosion and the increase in production costs caused by PTA spillage.

[0020] (2) The cylindrical discharge port is divided into two by the cross-sectional flow regulating component to adapt to different material characteristics and accurately control the material flow rate. When it slides along the axial direction of the discharge port, the gap between it and the inner wall of the discharge port changes. When it is completely closed, the material is blocked. When it is fully open, the maximum flow rate is reached. The middle position corresponds to different opening degrees, realizing continuous adjustment from 0 to the maximum flow rate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a safety control dust changing device according to this utility model;

[0022] Figure 2 This is a schematic diagram of the cross-sectional flow regulating component of this utility model;

[0023] Figure 3 This is a schematic diagram of the baffle of this utility model;

[0024] The markings of the components in the attached diagram:

[0025] 1-Base, 11-Column, 12-Horizontal bar, 2-Discharge component, 21-Discharge hopper, 22-First discharge port, 23-Second discharge port, 24-Flow regulating component, 241-Slide rail pressure strip, 242-Slide rail, 3-Baffle, 4-Support frame, 5-Moving component, 51-Roller. Detailed Implementation

[0026] The invention objective of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments cannot be described one by one here, but the implementation of this utility model is not limited to the following embodiments.

[0027] Example 1

[0028] A dust bag changing device for safety control includes a base 1, a feeding component 2, a baffle 3, and a moving component 5. The feeding component 2 is disposed in the middle of the base 1, the moving component 5 is connected to the lower end of the base 1, and the baffle 3 is connected to the upper end of the base 1.

[0029] The base 1 includes columns 11 and crossbars 12. At least four columns 11 are set at the four corners of the device and installed perpendicular to the ground. The height of the columns 11 should be set according to the actual situation, but not lower than the height of the PTA bag material.

[0030] At least three horizontal bars 12 perpendicular to the uprights 11 are installed at the bottom of the uprights 11, connecting adjacent uprights 11 at the bottom. The length of the horizontal bars 12 should be set according to the actual situation, but not less than the width of the PTA bag material; both ends of the horizontal bars 12 are connected and fixed to the bottom of the adjacent uprights 11 respectively. Among them, no connecting bar is installed between the bottoms of the two uprights 11 facing outwards. After the bag is changed, the bag material can be pulled out from between the two uprights 11.

[0031] At least four crossbars 12 are connected to the top of the column 11. The length of the crossbars 12 should be set according to the actual situation, but not less than the width of the PTA bag material. The height of the crossbars 12 for installation and fixing should be set according to the actual situation, but not less than the height of the PTA bag material.

[0032] The feeding component 2 includes a feeding hopper 21, a first feeding port 22, a second feeding port 23, and a cross-sectional flow rate regulating component 24. The feeding hopper 21 is fixedly connected to the top crossbar 12 of the column 11 and is located between the columns 11. The feeding hopper 21 is in the shape of a truncated pyramid, and its bottom fits into the inlet of the first feeding port 22. The upper side length of the truncated pyramid of the feeding hopper 21 is the same as the length of the crossbar 12.

[0033] The bottom surface of the hopper 21 is connected to the first discharge port 22, and the flow rate regulating component 24 of the first discharge port 22 is connected to the second discharge port 23. Both the first discharge port 22 and the second discharge port 23 are cylindrical. The diameter of the circular pipes of the first discharge port 22 and the second discharge port 23 should be set according to the actual situation, but should not be greater than the diameter of the PTA bag opening.

[0034] The cross-sectional flow rate regulating component 24 includes a slide rail 242 and a slide rail 242 pressure strip 241. The slide rail 242 and the slide rail 242 pressure strip 241 are tightly connected. The slide rail 242 pressure strip 241 is fixedly installed on both sides of the first discharge port 22, and the slide rail 242 is fixedly installed on both sides of the second discharge port 23. The second discharge port 23 can move along the direction of the slide rail 242. By dividing the cylindrical discharge port into two parts through the cross-sectional flow rate regulating component 24, it can adapt to different material characteristics and accurately control the material throughput.

[0035] The bottom of the baffle 3 is connected and fixed to the crossbar 12 at the top of the column 11. The length of the baffle 3 should be the same as the length of the crossbar 12. The height of the baffle 3 should be set according to the actual situation to ensure sufficient height space for observation and operation. This can effectively prevent PTA dust from drifting and spilling.

[0036] A support frame 4 is installed on the top of the baffle 3. The installation spacing of the support frame 4 can be set according to the actual situation, and it is used to support the placement of PTA broken packages.

[0037] The movable component 5 is installed on the side of the upright near the ground, driving the safety control dust bag changing device to move. The movable component 5 includes four rollers 51, two of which are omnidirectional wheels and two are directional wheels. The omnidirectional wheels are equipped with locking devices. The rollers 51 enable the trolley to move in all directions. The locking devices added to the omnidirectional wheels allow the trolley to be locked during operation, ensuring the safety of the personnel.

[0038] Instructions for use: Place the broken bag on the support frame 4 at the top of the baffle 3. The powder from the broken bag is discharged along the feed hopper 21. The person changing bags can put the opening of the new bag onto the circular pipe of the feed hopper 2111 and then clamp it with a pipe clamp. When changing bags, the powder can be accurately placed into the new bag, reducing PTA dust dispersion and spillage. The cross-sectional flow regulating component 24 divides the cylindrical feed port into two parts to adapt to different material characteristics and precisely control the material flow rate. When sliding along the axial direction of the feed port, the gap between it and the inner wall of the feed port changes. When fully closed, it blocks the discharge; when fully open, it is at maximum flow. The intermediate position corresponds to different opening degrees, realizing continuous adjustment from 0 to maximum flow.

[0039] The above-described specific embodiments are preferred embodiments of this utility model and are not intended to limit this utility model. Any other changes or equivalent substitutions made without departing from the technical solution of this utility model are included within the protection scope of this utility model.

Claims

1. A safety control dust bag changing device, characterized in that, It includes a base (1), a feeding component (2), a baffle (3) and a moving component (5). The feeding component (2) is disposed in the middle of the base (1), the moving component (5) is connected to the lower end of the base (1), and the baffle (3) is connected to the upper end of the base (1). The base (1) includes columns (11) and crossbars (12). At least four columns (11) are installed perpendicular to the ground. Three crossbars (12) are installed at the bottom of the columns (11) and connected to adjacent columns (11). The top of the columns (11) are connected by the four crossbars (12). The feeding component (2) includes a feeding hopper (21), a first feeding port (22), a second feeding port (23), and a cross-sectional flow rate regulating component (24). The feeding hopper (21) is fixedly connected to the top crossbar (12) of the column (11) and is located between the columns (11). The bottom surface of the feeding hopper (21) is connected to the first feeding port (22), and the first feeding port (22) is connected to the second feeding port (23) through the cross-sectional flow rate regulating component (24).

2. The safety control dust changing device according to claim 1, characterized in that, The cross-sectional flow regulating component (24) includes a slide rail (242) and a slide rail (242) pressure strip (241). The slide rail (242) and the slide rail (242) pressure strip (241) are tightly connected. The slide rail (242) pressure strip (241) is fixedly installed on both sides of the first discharge port (22). The slide rail (242) is fixedly installed on both sides of the second discharge port (23). The second discharge port (23) can move along the slide rail (242).

3. The safety control dust changing device according to claim 1, characterized in that, Both the first discharge port (22) and the second discharge port (23) are cylindrical.

4. The safety control dust changing device according to claim 1, characterized in that, A support frame (4) is provided on the top of the baffle (3).

5. The safety control dust changing device according to claim 1, characterized in that, The hopper (21) is shaped like a truncated pyramid, and its bottom fits into the feed inlet of the first discharge port (22).

6. The safety control dust changing device according to claim 1, characterized in that, The movable component (5) includes at least four rollers (51).

7. The safety control dust changing device according to claim 6, characterized in that, The roller (51) includes a swivel wheel and a directional wheel.

8. The safety control dust changing device according to claim 7, characterized in that, The caster wheel is equipped with a locking device.

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