Automatic feeding and sucking device for film blowing machine
By installing a screening disc and a guide pipe inside the suction pipe of the blown film machine, the problem of suction pipe blockage is solved, achieving continuous raw material transportation and improving production efficiency, thus adapting to the needs of different production scenarios.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHAN HUANTAI PACKAGING & PRINTING CO LTD
- Filing Date
- 2025-08-12
- Publication Date
- 2026-07-21
AI Technical Summary
Existing blown film machines are prone to clogging of the suction pipe due to large particles or agglomerated materials, which affects production efficiency and continuity.
A screening disc is installed inside the suction pipe. The screening disc is tilted to separate larger particles or agglomerated materials, which are then discharged through connecting pipes and guide pipes. The corrugated pipe design and detachable joints allow for flexible adjustment of the angle and connection method to prevent clogging.
It effectively reduces clogging of the suction pipe, ensures the continuity of raw material delivery, improves production efficiency, enhances operational flexibility and structural stability, and facilitates maintenance.
Smart Images
Figure CN224527945U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of material feeding technology for blown film machines, and specifically to an automatic material feeding and suction device for blown film machines. Background Technology
[0002] The automatic feeding and suction device of the blown film machine is a key piece of equipment for realizing the automatic conveying of raw materials in the blown film production process. It mainly uses the suction pipe to generate negative pressure to suck granular raw materials from the hopper and convey them to the extrusion mechanism of the blown film machine, providing a continuous and stable supply of raw materials for the blown film process. It is an important component for realizing the automation of blown film production.
[0003] The material feeding device of the blown film machine in the prior art generally consists of a material pump, a material suction pipe, and a storage hopper. The material pump provides a negative pressure power source, and the material suction pipe connects the hopper and the storage hopper to form a conveying channel. It realizes the automatic conveying of raw materials to a certain extent, reduces the tedious process of manual feeding, improves the degree of automation of production, and ensures the continuity of raw material supply. This helps to maintain the stability of blown film production, reduces the risk of production interruption caused by improper manual operation, and meets the basic needs of small and medium-sized blown film production to a certain extent.
[0004] However, existing suction devices may contain particles of different sizes mixed in with the suction material. When larger particles or agglomerated materials enter the suction pipe, it can easily cause blockage. This not only affects the normal transport of raw materials but also requires shutdown for cleaning, which seriously reduces production efficiency. Utility Model Content
[0005] In view of this, the present invention provides an automatic feeding and suction device for a blown film machine. By setting a screening disc inside the suction pipe, larger particles or lumps in the suction material can be separated and then discharged through the connecting pipe and the guide pipe. This reduces the risk of suction pipe blockage from the source, reduces downtime for cleaning due to blockage, ensures the continuity of raw material transportation, and significantly improves production efficiency.
[0006] To solve the above-mentioned technical problems, this utility model provides an automatic feeding and suction device for a blown film machine, including a blown film machine, the blown film machine including a suction pipe, and a suction head connected to one end of the suction pipe by a thread.
[0007] At least one screening disc is rotatably connected to the inner wall of the suction pipe. The screening disc is inclined relative to the axis of the suction pipe and is fixedly connected to one side of the screening disc. The adjustment rod passes through and is rotatably connected to the side wall of the suction pipe. The adjustment rod is rotatably connected to the suction pipe through a sealed bearing.
[0008] At least one connecting pipe is fixedly connected to the outer wall of the suction pipe and below the corresponding screening disc. The connecting pipe is connected to the suction pipe. One end of the connecting pipe away from the suction pipe is connected to a guide pipe through a flange, which is used to discharge larger particles separated by the screening disc.
[0009] The discharge ends of the feed pipe and the suction pipe are detachably connected by a double-connector, which is connected to the discharge ends of the feed pipe and the suction pipe respectively via flanges.
[0010] Both the suction pipe and the guide pipe are corrugated, which makes it easy to bend and adjust the angle.
[0011] A knob is fixedly connected to the end of the adjusting rod away from the suction pipe, and an anti-rollover component is provided on the knob.
[0012] The anti-overturning component includes two hanging rings fixedly connected to the outer wall of the knob. The included angle between the two hanging rings is set to 90°. The hanging rings are used to suspend heavy objects to prevent the screening disc from overturning due to material impact during the material suction process.
[0013] All connecting pipes not connected to the feed pipe are fitted with abutment posts. A limit plate is set at the end of the abutment post away from the feed pipe, and a handle is fixedly connected to one side of the limit plate.
[0014] A sealing gasket is fixedly connected to the inner wall of the connecting pipe.
[0015] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:
[0016] 1. Effectively solves the clogging problem: By setting a screening disc in the suction pipe, larger particles or lumps in the suction material can be separated and then discharged through the connecting pipe and the guide pipe, reducing the risk of suction pipe clogging from the source, reducing downtime for cleaning due to clogging, ensuring the continuity of raw material transportation, and significantly improving production efficiency.
[0017] 2. Enhanced operational flexibility: The adjusting rod and knob can be used to flexibly adjust the rotation direction of the screening disc. When multiple screening discs are set, different screening discs can be selected according to the needs of particle separation. Unused screening discs can be rotated to a vertical position to avoid interfering with material conveying. The suction pipe and guide pipe adopt a corrugated pipe design, which makes it easy to adjust the angle according to the installation space and adapt to the relative positions of different silos and blown film machines.
[0018] 3. Ensure structural stability: The adjusting rod is connected by a sealed bearing, which ensures both rotational flexibility and prevents negative pressure leakage; the hanging ring in the anti-tilting component can effectively fix the knob by suspending a weight, preventing the screening disc from overturning under the impact of materials, ensuring a stable screening angle and guaranteeing screening effect.
[0019] 4. Adaptable to different production scenarios: The discharge ends of the feed pipe and the suction pipe are detachably connected by a double-connector, which facilitates flexible switching between processing large particles separately and re-integrating them into the main conveying channel; the connecting pipe that is not connected to the feed pipe can be sealed by the contact column, and different connecting pipes can be selected according to the screening requirements.
[0020] 5. Easy to maintain and replace: The suction head and suction pipe are connected by threaded connection, and the guide pipe and connecting pipe, the double connector and the guide pipe and the discharge end of the suction pipe are all connected by flange. These connection methods facilitate the disassembly and replacement of components and reduce the difficulty of maintenance. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0022] Figure 2 This is a schematic diagram of the screening disc and its components of the present invention.
[0023] Figure 3 This is a schematic diagram of the contact post and its components of the present invention.
[0024] Figure 4 For the present utility model Figure 1 A partially enlarged structural diagram.
[0025] In the diagram: 101, suction pipe; 102, suction head; 103, screening disc; 104, adjusting rod; 105, connecting pipe; 106, guide pipe; 107, double-ended connector;
[0026] 201. Knob;
[0027] 301. Hanging ring;
[0028] 401. Abutment post; 402. Limiting plate; 403. Handle. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.
[0030] An automatic feeding and suction device for a blown film machine, such as Figure 1As shown: It includes a blown film machine, which includes a suction pipe 101. One end of the suction pipe 101 is connected to a suction head 102 via a threaded connection. The suction head 102 can perform diffusion suction of materials, thereby increasing the suction rate. The threaded connection method facilitates the disassembly and replacement of the suction head 102. Suction heads 102 with different apertures can be selected according to the particle size or characteristics of the raw material particles.
[0031] like Figure 1 , 2 As shown: At least one screening disc 103 is rotatably connected to the inner wall of the suction pipe 101. In this embodiment, there are three screening discs 103, and the size of the screening holes opened on each screening disc 103 is different.
[0032] Furthermore, the screening disc 103 is inclined relative to the axis of the suction pipe 101 and is set on the inner side wall of the suction pipe 101. The inclination angle can be in the range of 30°-60°. The inclined design allows larger particles to slide to one side under the action of gravity, which facilitates separation.
[0033] The screening disc 103 can screen the sucked material, separating larger particles or lumps to prevent them from entering the subsequent channel of the suction pipe 101. This reduces the risk of blockage at the source and solves the problem of blockage in the suction pipe 101 caused by large particles in the prior art. Since the blockage is reduced, there is no need to frequently stop the machine to clean the suction pipe 101, reducing production interruptions caused by blockage, ensuring the continuity of raw material transportation, and thus improving overall production efficiency.
[0034] like Figure 2 As shown: An adjusting rod 104 is fixedly connected to one side of the screening disc 103. The adjusting rod 104 passes through and is rotatably connected to the side wall of the suction pipe 101. The adjusting rod 104 is rotatably connected to the suction pipe 101 through a sealed bearing. The sealed bearing ensures the flexible rotation of the adjusting rod 104 and prevents negative pressure leakage in the suction pipe 101.
[0035] The adjusting rod 104 can flexibly adjust the angle of the screening disc 103. When at least two screening discs 103 are set, different screening discs 103 can be selected according to the needs of particle separation. The screening discs 103 that are not used can be rotated to make them vertically located in the suction pipe 101.
[0036] like Figure 1 , 2As shown: At least one connecting pipe 105 is fixedly connected to the outer wall of the suction pipe 101 and below the screening disc 103. In this embodiment, three connecting pipes 105 are set, corresponding to the number of screening discs 103. The connecting pipes 105 are connected to the suction pipe 101 and can accurately receive larger particles or agglomerated materials separated by the screening disc 103. They are quickly discharged through the connected guide pipe 106 to avoid large particles accumulating in the suction pipe 101 and causing blockage, thus ensuring the smooth flow of raw material.
[0037] One of the connecting pipes 105, the end furthest from the suction pipe 101, is connected to a guide pipe 106 via a flange. This guide pipe is used to discharge larger particles separated by the screening disc 103. Larger particles or agglomerated materials can be poured into the guide pipe 106 and then enter the extrusion mechanism of the blown film machine, so that materials of different particle sizes are separated and conveyed, avoiding blockages and jams. (The guide pipe 106 can also be connected to other crushing or screening mechanisms so that the materials can be processed and reused.)
[0038] like Figure 1 As shown: The discharge ends of the guide pipe 106 and the suction pipe 101 are detachably connected by a double-connector 107. The double-connector 107 is connected to the discharge ends of the guide pipe 106 and the suction pipe 101 respectively through flanges. This connection method facilitates quick assembly and disassembly.
[0039] When larger particles of material discharged from the feed pipe 106 need to be processed separately (such as for crushing or screening), the double connector 107 can be easily disassembled to separate the feed pipe 106 from the discharge end of the suction pipe 101; and when the separated material needs to be reconnected to the main conveying channel, it can be quickly reconnected to meet the needs of different production scenarios.
[0040] like Figure 1 As shown: Both the suction pipe 101 and the guide pipe 106 are corrugated pipes, which are easy to bend and adjust the angle. They are made of food-grade polyethylene, which has good flexibility and corrosion resistance. They are easy to bend and adjust the angle according to the installation space, and can adapt to the relative positions of different silos and blown film machines.
[0041] like Figure 2 As shown: A knob 201 is fixedly connected to the end of the adjusting rod 104 away from the suction pipe 101. The knob 201 is provided with anti-slip texture to facilitate the operator's grip and adjustment. The knob 201 is provided with an anti-tilting component.
[0042] The anti-tilting component includes two hanging rings 301 fixedly connected to the outer wall of the knob 201. The included angle between the two hanging rings 301 is set to 90°. The hanging rings 301 are used to suspend heavy objects (such as standard weights or sandbags) to prevent the screening disc 103 from tipping over due to material impact during the material suction process, ensuring stable screening angle, adapting to the impact intensity of different materials, and eliminating the need for a complex fixing structure.
[0043] The two hanging rings 301 are distributed at a 90° angle. The appropriate hanging ring 301 can be selected to suspend the weight according to the adjustment angle of the screening disc 103, which is suitable for different working states of the screening disc 103 and is flexible and efficient in operation.
[0044] like Figure 3 As shown: Each connecting pipe 105 not connected to the feed pipe 106 is fitted with an abutment post 401. The abutment post 401 is made of rubber and fits tightly against the inner wall of the connecting pipe 105 to provide a seal. A limiting plate 402 is provided at the end of the abutment post 401 away from the suction pipe 101. The diameter of the limiting plate 402 is larger than the outer diameter of the connecting pipe 105 to prevent the abutment post 401 from completely entering the connecting pipe 105. A handle 403 is fixedly connected to one side of the limiting plate 402 to facilitate the operator to insert and remove the abutment post 401. Different positions of the connecting pipe 105 can be selected according to the screening requirements.
[0045] A sealing gasket is fixedly connected to the inner wall of the connecting pipe 105. The sealing gasket is made of nitrile rubber. When the contact post 401 or the guide pipe 106 is connected to the connecting pipe 105, the sealing gasket can enhance the sealing of the connection and prevent negative pressure leakage.
[0046] When using:
[0047] The suction head 102 is connected to one end of the suction pipe 101 via a threaded connection. Based on the relative position of the hopper and the blown film machine, the angle of the suction pipe 101 and the guide pipe 106 is adjusted by bending them to ensure that the suction head 102 is aligned with the discharge port of the hopper. The connecting pipe 105 corresponding to the large particles to be separated is selected (based on the position of the screening disc 103), and the guide pipe 106 is connected to the connecting pipe 105 via a flange. Then, the end of the guide pipe 106 away from the connecting pipe 105 is connected to the discharge end of the suction pipe 101 via a double-connector 107 (flange connection), so that the separated large particles can flow into the main conveying channel through the guide pipe 106 (or be connected to the crushing / screening equipment as needed).
[0048] Depending on the particle size of the material to be separated, the adjusting rod 104 is rotated by rotating the knob 201. The screening disc 103 that needs to be used is kept in an inclined state (to facilitate large particles to slide down to the connecting pipe 105). The screening disc 103 that is not in use can be rotated to a vertical state (to avoid interfering with the material conveying). After adjustment, a suitable hanging ring 301 is selected according to the angle of the screening disc 103 (the two hanging rings 301 are at a 90° angle to accommodate different inclination angles). A weight (such as a standard weight) is suspended on the selected hanging ring 301. The pulling force of the weight is used to fix the knob 201 to prevent the screening disc 103 from overturning due to the impact of the material during the material suction process, thus ensuring the stability of the screening angle.
[0049] For the remaining connecting pipes 105 that are not connected to the feed pipe 106, the abutment post 401 is inserted into the pipe by the handle 403, so that the abutment post 401 is tightly fitted with the sealing gasket on the inner side wall of the connecting pipe 105 to achieve a seal.
[0050] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0051] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.
Claims
1. An automatic feeding and suction device for a blown film machine, comprising a blown film machine, the blown film machine including a suction pipe (101), one end of the suction pipe (101) being provided with a suction head (102), characterized in that: At least one screening disc (103) is provided on the inner side wall of the suction pipe (101), and an adjusting rod (104) is provided on one side of the screening disc (103). The adjusting rod (104) passes through and is rotatably connected to the side wall of the suction pipe (101). At least one connecting pipe (105) is provided on the outer wall of the suction pipe (101) and below the screening disc (103). The connecting pipe (105) is connected to the suction pipe (101). One end of the connecting pipe (105) away from the suction pipe (101) is connected to a guide pipe (106) for exporting larger particles separated by the screening disc (103). The discharge ends of the feed pipe (106) and the suction pipe (101) are detachably connected by a double-connector (107).
2. The automatic feeding and suction device for a blown film machine as described in claim 1, characterized in that: Both the suction pipe (101) and the guide pipe (106) are corrugated pipes, which are easy to bend and adjust the angle.
3. The automatic feeding and suction device for a blown film machine as described in claim 1, characterized in that: The adjusting rod (104) is rotatably connected to the suction pipe (101) via a sealed bearing. A knob (201) is provided at the end of the adjusting rod (104) away from the suction pipe (101), and an anti-rollover component is provided on the knob (201).
4. The automatic feeding and suction device for a blown film machine as described in claim 3, characterized in that: The anti-overturning component includes two hanging rings (301) disposed on the outer wall of the knob (201), the included angle between the two hanging rings (301) is set to 90°, and the hanging rings (301) are used to suspend heavy objects to prevent the screening disc (103) from overturning due to material impact during the material suction process.
5. The automatic feeding and suction device for a blown film machine as described in claim 3, characterized in that: The screening disc (103) is inclined relative to the axis of the suction pipe (101) and is disposed on the inner side wall of the suction pipe (101).
6. The automatic feeding and suction device for a blown film machine as described in claim 5, characterized in that: Each of the connecting pipes (105) not connected to the feed pipe (106) is provided with an abutment post (401). A limit plate (402) is provided at the end of the abutment post (401) away from the feed pipe (101). A handle (403) is provided on one side of the limit plate (402).
7. The automatic feeding and suction device for a blown film machine as described in claim 6, characterized in that: A sealing gasket is provided on the inner wall of the connecting pipe (105).