PE granule pneumatic mixing and feeding system

Abstract

The utility model relates to a PE granule pneumatic compounding and sending system, including compounding material pipe, conveying PE granule, separating filter device, including connecting negative pressure chamber of compounding material pipe, connecting separator of negative pressure chamber and connecting filter of separator, feeding pipe, connecting negative pressure chamber and filter simultaneously, be provided with exchanger on feeding pipe, exchanger is close to the feeding pipe of one end of separating filter device first pipe body, the feeding pipe of exchanger is away from one end of separating filter device second pipe body, wherein, compounding material pipe and separating filter device set up at least two groups, correspondingly, the feeding pipe sets up at least two, all feeding pipe connects an exchanger, drives exchanger, switches the first pipe body and connects different second pipe body. The utility model discloses through setting up multiple groups of compounding material pipe, promotes the speed and overall working efficiency of blow molding machine replacement raw material.

Description

Technical Field

[0001] This utility model relates to the technical field of PE granule conveying systems, and in particular to a pneumatic mixing and conveying system for PE granules. Background Technology

[0002] When a blow molding machine produces plastics with different functions and sizes, the required amount and proportion of PE material vary. Even when producing plastics of the same specifications, the required amount and proportion of PE material will differ due to the machine's own parameters.

[0003] A workshop often has multiple blow molding machines, and each blow molding machine may need to produce raw materials of different specifications. Currently, the raw material supply for blow molding machines is done manually or with dedicated feeding equipment. Manual feeding is inefficient. Even with dedicated feeding equipment, frequent changes in raw material ratios can severely impact the working efficiency of the blow molding machine.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a pneumatic mixing and conveying system for PE granules to improve the efficiency of raw material demand in blow molding machines.

[0006] The technical solution of this utility model is as follows:

[0007] The pneumatic batching and conveying system for PE granules includes:

[0008] The mixing pipe conveys PE granules;

[0009] A separation and filtration device includes a negative pressure chamber connected to the mixing pipe, a separator connected to the negative pressure chamber, and a filter connected to the separator;

[0010] A feeding pipe connects both the negative pressure chamber and the filter; an exchanger is installed on the feeding pipe; the end of the feeding pipe closest to the separation and filtration device is the first pipe body; the end of the feeding pipe furthest from the separation and filtration device is the second pipe body.

[0011] The mixing pipe and the separation and filtration device are provided in at least two sets, and correspondingly, the feeding pipe is provided in at least two places; all the feeding pipes are connected to one exchanger; the exchanger is driven to switch the first pipe body to different second pipe bodies.

[0012] A further technical solution is that at least two sets of connecting pipes are movably arranged inside the exchanger; one set of the connecting pipes is connected to the feeding pipe at the same time; one end of the connecting pipe is connected to the first pipe body, and the other end of the connecting pipe is connected to the second pipe body.

[0013] A further technical solution is to provide a silo, a hopper connected to the silo, and a feeder connected to the silo; the feeder is connected to the mixing pipe.

[0014] A further technical solution is that at least two hoppers are provided along the length of the mixing pipe.

[0015] A further technical solution is that a rotary valve is provided between the negative pressure chamber and the feeding pipe.

[0016] A further technical solution is to provide a positive pressure chamber between the rotary valve and the feeding pipe.

[0017] A further technical solution is that the feeding pipe is connected to a fan.

[0018] A further technical solution is that the feeder is a zero-cut feeder; the zero-cut feeder is connected to a special motor and a frequency converter.

[0019] A further technical solution includes an air blowing pipe; the air blowing pipe is connected to the air source and the exchanger; the exchanger is driven, and the air blowing pipe is connected to different second tubes.

[0020] A further technical solution is that the second pipe body is connected to multiple blow molding machines through branch pipes; a second reversing valve is installed on the branch pipes.

[0021] The beneficial technical effects of this utility model are as follows:

[0022] (1) The PE granule pneumatic mixing and conveying system of this utility model is equipped with multiple sets of mixing pipes. The mixing pipes are connected to the blow molding machine through the feeding pipes, and the feeding pipes are equipped with exchangers. Different proportions of raw materials can be set in different mixing pipes. When it is necessary to change the raw material ratio of the blow molding machine, it is only necessary to replace the feeding pipe connected to the blow molding machine through the exchanger. There is no need to readjust the raw materials, which greatly improves the speed of changing raw materials in the blow molding machine, thereby improving the working efficiency of the blow molding machine. At the same time, a separation and filtration device is also provided to filter out the powder in the powder-containing gas in the negative pressure chamber, so as to avoid the accumulation of static electricity in the pipeline and cause safety accidents.

[0023] (2) Furthermore, multiple silos are also provided. When mixing raw materials, each component is placed into a different silo, and then the raw materials are quickly mixed in the mixing pipe by inputting the batching device into the mixing pipe.

[0024] (3) Furthermore, the batching device is driven by a special motor, and the rotary valve, motor, and exchanger can also be driven by a motor / cylinder to facilitate remote and intelligent control of the PE granule pneumatic batching and conveying system. Remote control enhances the flexibility of the system layout in this application, facilitates workshop space setup, improves the workshop environment, and enhances management efficiency. Attached Figure Description

[0025] Figure 1 A three-dimensional structural schematic diagram of a pneumatic batching and conveying system for PE granules according to an embodiment of the present disclosure is shown.

[0026] Figure 2 A partially enlarged view of point A is shown of a pneumatic batching and conveying system for PE granules according to an embodiment of the present disclosure.

[0027] Figure 3 A schematic diagram of the connection relationship between the second tube and the blow molding machine is shown in a pneumatic mixing and conveying system for PE granules according to an embodiment of the present disclosure.

[0028] Marked in the attached diagram:

[0029] 1. Mixing pipe; 11. Air inlet pipe; 12. Hopper; 13. Storage bin; 14. Batching device; 2. Separation and filtration device; 21. Negative pressure chamber; 22. Positive pressure chamber; 23. Rotary valve; 24. Separator; 25. Filter; 26. Fan; 3. Feeding pipe; 31. First pipe body; 32. Second pipe body; 33. Branch pipe; 34. First check valve; 35. Second check valve; 5. Exchanger; 51. Connecting pipe; 52. Drive cylinder; 6. Blow molding machine. Detailed Implementation

[0030] To make the objectives, features, and advantages of this utility model more apparent and understandable, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc., depicted in the accompanying drawings are merely for illustrative purposes and to aid those skilled in the art in understanding and reading the content disclosed herein. They are not intended to limit the implementation conditions of this utility model and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to the size, without affecting the effects and objectives achieved by this utility model, should still fall within the scope of the technical content disclosed in this utility model.

[0031] In the description of this utility model, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] Figure 1 A three-dimensional structural schematic diagram of a pneumatic batching and conveying system for PE granules according to an embodiment of the present disclosure is shown. Figure 2 A partially enlarged view at point A is shown of a pneumatic batching and conveying system for PE granules according to an embodiment of this disclosure. Please refer to... Figure 1 and Figure 2 The PE granule pneumatic batching and conveying system includes a mixing pipe 1 for conveying PE granules. The mixing pipe 1 is connected to an air inlet pipe 11. A separation and filtration device 2 includes a negative pressure chamber 21 connected to the mixing pipe 1, a separator 24 connected to the negative pressure chamber 21, and a filter 25 connected to the separator 24. The separator 24 can be a sedimentation separator 24. For example, the separator 24 may have a large chamber (not shown in the figure). When the powder-containing gas flowing into the separator 24 enters the suddenly expanded chamber, the flow rate of the powder-containing gas decreases, and the powder settles due to centrifugal force. The filter 25 can be a bag filter 25 or a cartridge filter 25, etc. The separator 24 and filter 25 are used to filter out the powder in the powder-containing gas within the negative pressure chamber 21, preventing the powder from accumulating static electricity in the pipeline and causing safety accidents. A feed pipe 3 connects both the negative pressure chamber 21 and the filter 25. An exchanger 5 is installed on the feed pipe 3. The feed pipe 3 at the end of the exchanger 5 closest to the separation and filtration device 2 is the first pipe body 31. The feed pipe 3 at the end of the exchanger 5 furthest from the separation and filtration device 2 is the second pipe body 32.

[0033] The mixing pipe 1 and the separation and filtration device 2 are provided in at least two sets, and correspondingly, at least two feeding pipes 3 are provided. All feeding pipes 3 are connected to a heat exchanger 5. The heat exchanger 5 is driven to switch the connection of the first pipe body 31 to different second pipe bodies 32. Different proportions of raw materials can be set in different mixing pipes 1. When it is necessary to change the raw material ratio of the blow molding machine 6, it is only necessary to replace the feeding pipe 3 connected to the blow molding machine 6 through the heat exchanger 5. There is no need to readjust the raw materials, which greatly improves the speed of raw material change of the blow molding machine 6, thereby improving the working efficiency of the blow molding machine 6.

[0034] Figure 3 This diagram illustrates the connection relationship between the second tube blow molding machine and the PE granule pneumatic batching and conveying system according to an embodiment of this disclosure. Please refer to... Figure 2and Figure 3 The exchanger 5 has at least two sets of connecting pipes 51 movably arranged within it. The correspondence between different sets of connecting pipes 51 and the feeding pipes 3 varies, with the number of connecting pipes 51 in one set corresponding to the number of feeding pipes 3. One end of each connecting pipe 51 connects to a first pipe body 31, and the other end connects to a second pipe body 32. Taking two feeding pipes 3, A and B, as an example, the first connecting pipe 51 in the first set of connecting pipes 51 simultaneously corresponds to both first pipe body 31 and second pipe body 32 (A), and the second connecting pipe 51 simultaneously corresponds to both first pipe body 31 and second pipe body 32 (B); similarly, the first connecting pipe 51 in the second set of connecting pipes 51 simultaneously corresponds to both first pipe body 31 and second pipe body 32 (A), and the second connecting pipe 51 simultaneously corresponds to both first pipe body 31 (B) and second pipe body 32 (A). At any given time, one set of connecting pipes 51 connects to the feeding pipes 3. In some embodiments, the exchanger 5 also includes a drive cylinder 52. The extension and retraction of the drive cylinder 52 connects all the connecting pipes 51. The telescopic end of the drive cylinder 52 extends and retracts to switch the positions of different sets of connecting pipes 51, thus switching the first pipe body 31 to connect to different second pipe bodies 32. The change in the connection relationship between the first pipe body 31 and the second pipe body 32 correspondingly changes the raw material ratio of the blow molding machine 6 connected to the second pipe body 32, enabling rapid replacement of the raw materials in the blow molding machine 6.

[0035] The first pipe body 31 near the exchanger 5 and the second pipe body 32 near the exchanger 5 can be equipped with a first check valve 34 to reduce raw material leakage when the connecting pipe 51 is switched.

[0036] In some embodiments, an air blowing pipe (not shown) is also included. The air blowing pipe connects the air source and the exchanger 5. The exchanger 5 is provided with at least two sets of connecting pipes 51 corresponding to the air blowing pipe. By driving the exchanger 5, the air blowing pipe can be connected to different second tubes 32. When switching the ratio of raw materials input to the second tube 32, the air blowing pipe can be connected to the second tube 32 first. The air blown out from the air source flows along the air blowing pipe to the second tube 32 to blow away the raw materials remaining in the second tube 32, so as to prevent the residual raw materials from affecting the ratio of subsequent raw materials.

[0037] Preferably, the second pipe body 32 is connected to multiple blow molding machines 6 via branch pipes 33. The second pipe body 32 is simultaneously connected to multiple branch pipes 33, each branch pipe 33 being connected to a single blow molding machine 6. A reversing valve 35 is installed on each branch pipe 33 to control its on / off state. Raw materials input into the second pipe body 32 can be fed into different blow molding machines 6 along the branch pipes 33. By controlling the on / off state of the second reversing valve 35, the input of raw materials to a single blow molding machine 6 can be controlled individually, improving the flexibility of the PE granule pneumatic mixing and conveying system.

[0038] Please refer to Figure 1 and Figure 2It is also equipped with a hopper 13, a hopper 12 connected to the hopper 13, and a feeder 14 connected to the hopper 13. The feeder 14 is connected to the mixing pipe 1. Raw materials are fed into the mixing pipe 1 along the hopper 12, the hopper 13, and the feeder 14.

[0039] Preferably, at least two hoppers 13 are provided along the length of the mixing pipe 1. When mixing raw materials, each component is placed into a different hopper 13, and then fed into the mixing pipe 1 through the batching device 14 to quickly mix the raw materials in the mixing pipe 1.

[0040] More preferably, the feeder 14 is a zero-cut feeder. In some embodiments, the feeder 14 may also be a disc feeder as described in patent CN201597132U. The feeder 14 is connected to a special motor and a frequency converter, and is driven by the special motor and the frequency converter. Simultaneously, the rotary valve 23, the motor and the exchanger 5, and the motor / cylinder drive are controlled by an industrial computer (not shown in the figure). This system can also be remotely and intelligently controlled via network. Remote control enhances the flexibility of the system layout in this application, facilitates workshop space setup, improves the workshop environment, and enhances management efficiency.

[0041] Please refer to Figure 1 and Figure 2 A rotary valve 23 is provided between the negative pressure chamber 21 and the feeding pipe 3. In some embodiments, the rotary valve 23 may also be the rotary valve 23 of our earlier patent CN102079115A, which delivers raw materials to the feeding pipe 3.

[0042] Preferably, a positive pressure chamber 22 is provided between the rotary valve 23 and the feed pipe 3. A blower 26 is connected to the feed pipe 3. The blower 26 can be a Roots blower 26. Its stable flow rate ensures a stable material supply, and it also has an oil-free sealing system to prevent oil contamination of the raw materials. Specifically, a blower 26 is located near the negative pressure pipe on the feed pipe 3, with its lower air outlet facing the positive pressure chamber 22. Another blower 26 is also located near the filter 25 on the feed pipe 3, with its upper air outlet facing the filter 25 and its lower air outlet facing the positive pressure chamber 22.

[0043] The specific workflow of this utility model is as follows:

[0044] According to the raw material ratio, the operator places each component separately into different hoppers 13 connected to the same mixing pipe 1 along the hopper 12. The feeder 14 then feeds the components into the mixing pipe 1 at a set rate. Gas is drawn into the mixing pipe 1 along the inlet pipe 11, mixes the components to form a specific ratio of raw material, and then flows into the negative pressure chamber 21 under the suction of the blower 26. The raw material in the negative pressure chamber 21 falls into the positive pressure chamber 22 along the rotary valve 23 and is blown into the first pipe body 31 by the blower 26. The powder-containing gas flows through the separator 24 and filter 25 along the pipe. Under the strong push of another blower 26, it enters the first pipe body 31. The raw material entering the first pipe body 31 flows into the second pipe body 32 along the connecting pipe 51, and then enters different blow molding machines 6 along various branches. Two or more sets of mixing pipes 1 and separation / filter devices 2 are provided. This follows the principle of different ratios being prepared in different sets of mixing pipes, referring to the above raw material ratio method. When it is necessary to switch the raw material ratio received by the blow molding machine 6, adjust the position of the connecting pipes 51 of different groups, switch the second pipe 32 connected to the first pipe 31, so as to input raw materials with different ratios into the second pipe 32, and adjust the raw material ratio received by the blow molding machine 6 connected to the second pipe 32.

[0045] The technical features described above can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A pneumatic batching and conveying system for PE granules, characterized in that, The pneumatic batching and conveying system for PE granules includes: The mixing pipe conveys PE granules; A separation and filtration device includes a negative pressure chamber connected to the mixing pipe, a separator connected to the negative pressure chamber, and a filter connected to the separator; A feeding pipe connects both the negative pressure chamber and the filter; an exchanger is installed on the feeding pipe; the end of the feeding pipe closest to the separation and filtration device is the first pipe body; the end of the feeding pipe furthest from the separation and filtration device is the second pipe body. The mixing pipe and the separation and filtration device are provided in at least two sets, and correspondingly, the feeding pipe is provided in at least two places; all the feeding pipes are connected to one exchanger; the exchanger is driven to switch the first pipe body to different second pipe bodies.

2. The PE granule pneumatic batching and conveying system as described in claim 1, characterized in that: At least two sets of connecting pipes are movably arranged inside the exchanger; one set of the connecting pipes is connected to the feeding pipe at the same time; one end of the connecting pipe is connected to the first pipe body, and the other end of the connecting pipe is connected to the second pipe body.

3. The PE granule pneumatic batching and conveying system as described in claim 1, characterized in that: It is also equipped with a silo, a hopper connected to the silo, and a feeder connected to the silo; the feeder is connected to the mixing pipe.

4. The PE granule pneumatic batching and conveying system as described in claim 3, characterized in that: At least two hoppers are provided along the length of the mixing pipe.

5. The PE granule pneumatic batching and conveying system as described in claim 1, characterized in that: A rotary valve is installed between the negative pressure chamber and the feeding pipe.

6. The PE granule pneumatic batching and conveying system as described in claim 5, characterized in that: A positive pressure chamber is provided between the rotary valve and the feed pipe.

7. The PE granule pneumatic batching and conveying system as described in claim 1, characterized in that: The feeding pipe is connected to a blower.

8. The PE granule pneumatic batching and conveying system as described in claim 3, characterized in that: The feeder is a zero-cut feeder; the zero-cut feeder is connected to a special motor and a frequency converter.

9. The PE granule pneumatic batching and conveying system as described in claim 1, characterized in that: It also includes an air blowing pipe; the air blowing pipe is connected to the air source and the exchanger; the exchanger is driven, and the air blowing pipe is connected to different second tubes.

10. The PE granule pneumatic batching and conveying system as described in claim 9, characterized in that: The second pipe is connected to multiple blow molding machines via branch pipes; a reversing valve is installed on the branch pipe.

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