Feeding structure of intelligent film blowing machine

Abstract

The utility model relates to a feeding structure of an intelligent film blowing machine, and belongs to the technical field of film blowing machines, the feeding structure comprises a hopper mounted at a feeding port of the intelligent film blowing machine, the hopper comprises a feeding part, a transition part and a connecting part which are sequentially arranged from top to bottom, and the connecting part is connected with the feeding port; the diameter of the inner wall of the transition part is gradually reduced from the position close to the feeding part to the position away from the feeding part, a cavity is formed in the transition part, an air pipe communicated with the cavity is arranged on the outer wall of the transition part, a plurality of air holes communicated with the cavity are formed in the inner wall of the transition part, and the axes of the air holes are perpendicular to the inner wall of the transition part. The film blowing device has the effect of improving the film blowing quality of the film blowing machine.

Description

Technical Field

[0001] The present application relates to the field of film blowing machines, and in particular, to a feeding structure of an intelligent film blowing machine. Background Art

[0002] When dealing with waste plastics, the waste plastics are usually collected and pre-treated first, and then the plastic particles made from the waste plastics are reprocessed to make new plastic products, so as to realize the recycling of resources and achieve beneficial effects such as saving resources and reducing the cost of waste treatment. And making the film from waste plastics through a film blowing machine is one of the effective ways to realize the reuse of waste plastics.

[0003] When reprocessing waste plastics through a film blowing machine, the plastic particles made from the waste plastics are usually poured into the hopper at the feeding port of the film blowing machine as plastic particles, and then the feeding is realized through the auger below the feeding port, and the plastic particles are melted during the feeding process, so that the melted plastics can be extruded and blown later.

[0004] However, the structure of the hopper on the existing film blowing machine is simple, and it can only play a guiding role for the plastic particles that need to be put into the film blowing machine so that the plastic particles can be put into the feeding port of the film blowing machine. However, when the plastic particles are not put into the hopper, due to improper storage and other reasons, there may be contact with the outside air, which may cause fine dust particles to adhere to the surface of the plastic particles. If the fine dust particles adhering to the surface of the plastic particles are not treated, it will cause the problem that the fine dust particles and the plastic particles are processed together after the plastic particles are put in, resulting in a decrease in the quality of the plastic film blown by the subsequent film blowing machine. Summary of the Invention

[0005] In order to improve the film blowing quality of the film blowing machine, the present application provides a feeding structure of an intelligent film blowing machine, and adopts the following technical solutions:

[0006] It includes a hopper installed at the feeding port of the intelligent film blowing machine, and is characterized in that: the hopper includes a feeding part, a transition part and a connecting part arranged in sequence from top to bottom, the connecting part is connected to the feeding port, the inner wall diameter of the transition part gradually decreases from the direction close to the feeding part to the direction away from the feeding part, a cavity is arranged in the transition part, an air pipe communicated with the cavity is arranged on the outer wall of the transition part, and a plurality of air holes communicated with the cavity are arranged on the inner wall of the transition part, and the axis of the air hole is perpendicular to the inner wall of the transition part.

[0007] Preferably, an adsorbing part is arranged between the transition part and the feeding part, a slot for the adsorbing part to be inserted and matched is arranged at one end of the transition part close to the feeding part, and the inner wall of the feeding part and the outer wall of the adsorbing part are in inserted and matched.

[0008] Preferably, the air holes are conical holes, and the diameter of the air holes gradually decreases from the side close to the cavity towards the side away from the cavity.

[0009] Preferably, a dust extraction port communicating with the inside of the feeding part is arranged on the outer wall of the feeding part. A dust extraction pipe is arranged on the dust extraction port, and a pump body is installed at one end of the dust extraction pipe away from the dust extraction port.

[0010] Preferably, a filter screen is arranged in the dust extraction port. The dust extraction port is obliquely arranged on the feeding part, and the distance between the axis of the dust extraction port and the outer wall of the feeding part gradually increases from the side close to the transition part towards the side away from the transition part.

[0011] Preferably, a transparent viewing window is arranged on the feeding part.

[0012] Preferably, a valve is arranged on the connecting part, and the valve is a metering valve.

[0013] In summary, compared with the prior art, the advantages of the present application are as follows:

[0014] 1. By arranging a cavity in the transition part, and arranging air holes communicating with the cavity on the inner wall of the transition part, and arranging an air pipe communicating with the cavity on the outer wall of the transition part, it enables the staff to convey gas into the cavity through the air pipe so that the gas sprays out from the air holes. Since the inner diameter of the transition part gradually decreases from the side close to the feeding part towards the side away from the feeding part and the axis of the air hole is perpendicular to the inner wall of the transition part, the airflow sprayed out from the air holes can blow towards the feeding part. Furthermore, when plastic particles are subsequently put into the feeding part, the airflow sprayed out from the air holes can wash the plastic particles falling from the feeding part, thereby blowing away the fine dust particles adhering to the plastic particles, and further preventing the fine dust particles from being melted together with the plastic particles, achieving the effect of improving the subsequent film blowing quality of the film blowing machine.

[0015] 2. By setting the air holes as conical holes, when the airflow blows out from the cavity, its pressure is stronger. Furthermore, the plastic particles put into the feeding part fall on the inner wall of the transition part, which may cause the air holes to be blocked. At the same time, the fine dust particles adhering to the outer wall of the plastic particles can also be blown away. Description of the Drawings

[0016] Figure 1 is a perspective view of a feeding structure of an intelligent film blowing machine in an embodiment of the present application;

[0017] Figure 2 is Figure 1 the full sectional view in

[0018] Figure 3 is Figure 2 the enlarged view at A in

[0019] Figure 4Yes Figure 2 An enlarged schematic view of part B in it.

[0020] Explanation of reference numerals in the drawings: 1. Hopper; 2. Feeding part; 3. Transition part; 4. Connecting part; 5. Cavity; 6. Air pipe; 7. Air hole; 8. Adsorbing part; 9. Slot; 10. Dust extraction port; 11. Dust extraction pipe; 12. Pump body; 13. Filter screen; 14. Transparent window; 15. Dosing valve. Detailed implementation manners

[0021] The following further elaborates on this application Figures 1-4 in conjunction with the attached drawings.

[0022] Embodiment

[0023] An embodiment of this application discloses a feeding structure of an intelligent film blowing machine. Referring to Figure 1 , Figure 2 and Figure 3 , a hopper 1 is provided at the feeding port of the film blowing machine. The hopper 1 includes a feeding part 2, a transition part 3, and a connecting part 4 that are sequentially distributed from top to bottom. Among them, one end of the connecting part 4 is connected to the feeding port on the film blowing machine through a flange, and the other end of the connecting part 4 is fixedly connected to one end of the transition part 3. The end of the transition part 3 far from the connecting part 4 is also connected to the feeding part 2 through a flange.

[0024] The inner diameter of the transition part 3 gradually decreases from the direction close to the feeding part 2 towards the direction away from the feeding part 2. A cavity 5 is provided inside the transition part 3, and a plurality of air holes 7 are provided on the inner wall of the transition part 3. The plurality of air holes 7 are all communicated with the cavity 5, and the axis of the air hole 7 is perpendicular to the inner wall of the transition part 3. An air pipe 6 is provided on the outer wall of the transition part 3. One end of the air pipe 6 is communicated with the cavity 5, and the other end of the air pipe 6 is communicated with an external air source. This enables the gas of the external air source to be transported into the cavity 5 through the air pipe 6 and then ejected from the cavity 5 through the air holes 7. Since the inner diameter of the transition part 3 gradually decreases from the direction close to the feeding part 2 towards the direction away from the feeding part 2, and the axis of the air hole 7 is perpendicular to the inner wall of the transition part 3, the airflow ejected from the air hole 7 will spray towards the feeding part 2. This enables the plastic particles input from the feeding part 2 to be washed by the airflow before falling to the connecting part 4, and thus the fine dust particles adhering to the outer walls of some plastic particles are blown away.

[0025] It is worth mentioning that the air hole 7 is a conical hole, and the diameter of the air hole 7 gradually decreases from the direction close to the cavity 5 towards the direction away from the cavity 5, so that the pressure of the airflow is stronger when it blows out from the cavity 5. Furthermore, the plastic particles input through the feeding part 2 may block the air hole 7 due to falling on the inner wall of the transition part 3. In addition, it should also be noted that the minimum aperture of the air hole 7 is not large enough for the plastic particles to pass through, so that the plastic particles will not fall into the cavity 5 through the air hole 7.

[0026] Furthermore, an adsorbent 8 is provided at one end of the transition part 3 close to the feeding part 2. The adsorbent 8 is a permanent magnet and is annular. An annular slot 9 for one end of the adsorbent 8 to be inserted and fitted is provided on the transition part 3, and the inner wall of the feeding part 2 can be inserted and fitted with the outer wall of the adsorbent 8. This enables the adsorbent 8 to play a role in positioning the installation of the feeding part 2 on the transition part 3 when the adsorbent 8 is inserted into the transition part 3, thereby increasing the installation efficiency of the feeding part 2 on the transition part 3.

[0027] In addition, it should be noted that since the outer wall of the adsorbent 8 can be inserted and fitted with the inner wall of the feeding part 2, the inner wall of the adsorbent 8 is inside the feeding part 2. When plastic particles are put into the feeding part 2, since the airflow can blow out the fine metal particles mixed in the plastic particles while blowing off the fine dust particles adhering to the plastic particles, at this time, the adsorbent 8 can adsorb the blown-off fine metal particles, thereby further removing the impurities mixed in the plastic particles and further improving the film blowing quality of the film blowing machine.

[0028] When the inner wall of the adsorbent 8 is full of fine metal particles, the inner wall of the adsorbent 8 can be cleaned by removing the feeding part 2, so as to ensure that the adsorbent 8 can maintain its adsorption force for a long time. In addition, in order to prevent the feeding part 2 from being adsorbed by the adsorbent 8 when connecting the transition part 3 and the feeding part 2, the feeding part 2 is made of a non-metallic material, which enables the feeding part 2 to be more easily inserted with the adsorbent 8 and then connected to the transition part 3.

[0029] Refer to Figure 1 、 Figure 2 and Figure 4 , furthermore, a dust extraction port 10 is provided at the feeding part 2. One end of the dust extraction port 10 far from the feeding part 2 is communicated with a dust extraction pipe 11, and a pump body 12 is installed at one end of the dust extraction pipe 11 far from the dust extraction port 10. This enables the fine dust particles blown off by the airflow ejected from the air hole 7 and the fine metal particles not adsorbed by the adsorbent 8 after being blown off to be extracted through the dust extraction port 10 and the dust extraction pipe 11, so that the staff can centrally process them later.

[0030] It is worth mentioning that the distance between the axis of the dust extraction port 10 and the outer wall of the feeding part 2 gradually increases from near the transition part 3 towards the direction away from the transition part 3, which makes the dust extraction port 10 in an inclined state. A filter screen 13 is also provided in the dust extraction port 10. When the pump body 12 is in the starting state, if some plastic particles enter the dust extraction port 10, they will be blocked by the filter screen and thus will not be drawn out of the feeding part 2 by the dust extraction pipe 11. Since the dust extraction port 10 is inclined, the plastic particles entering the dust extraction port 10 can slide out of the dust extraction port 10 under the action of their own gravity, thereby reducing the probability of being blocked by plastic particles in the dust extraction port 10.

[0031] Referring to Figure 1 , and in order to facilitate the staff to observe the input situation of plastic particles in a timely manner, a transparent window 14 is provided on the feeding part 2, which enables the staff to supplement plastic particles through the feeding part 2 in a timely manner according to the feeding situation in the transparent window 14.

[0032] Furthermore, a valve is provided on the connecting part 4, and this valve is a metering valve 15, which enables the plastic particles input through the feeding part 2 to be metered and discharged through the metering valve 15, thereby reducing the probability of blockage caused by excessive feeding at the connecting part 4 in the film blowing machine.

[0033] The implementation principle of the embodiment of the present application is as follows: First, compressed air is input into the cavity 5 in the transition part 3 through the air pipe 6, and the pump body 12 installed on the dust extraction pipe 11 is started. At this time, the compressed air is ejected from the air holes 7 on the inner wall of the transition part 3, and the airflow ejected from the air holes 7 blows towards the feeding part 2. Then, plastic particles are input through the feeding part 2. At this time, during the descent of the plastic particles, the fine dust particles attached to the plastic particles will be blown away by the airflow ejected from the air holes 7 and then drawn out by the dust extraction pipe 11 through the dust extraction port 10; while the metal particles mixed in the plastic particles will be blown to the vicinity of the adsorbing member 8 and thus adsorbed by the adsorbing member 8. Thus, the screening of impurities in the plastic particles is realized. After that, by regularly opening the feeding valve on the connecting part 4, the plastic particles in the connecting part 4 are regularly discharged into the film blowing machine for the film blowing machine to blow the film.

[0034] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A feeding structure of an intelligent film blowing machine, comprising a hopper (1) installed at a feeding port of the intelligent film blowing machine, characterized in that: The hopper (1) comprises a feed portion (2), a transition portion (3) and a connecting portion (4) which are arranged in sequence from top to bottom, the connecting portion (4) being connected to the feed port, the inner wall diameter of the transition portion (3) gradually decreasing from close to the feed portion (2) towards away from the feed portion (2), a cavity (5) being arranged in the transition portion (3), an air pipe (6) communicating with the cavity (5) being arranged on the outer wall of the transition portion (3), a plurality of air holes (7) communicating with the cavity (5) being arranged on the inner wall of the transition portion (3), the axis of the air hole (7) being perpendicular to the inner wall of the transition portion (3).

2. According to the feeding structure of the intelligent film blowing machine according to claim 1, it is characterized in that: An adsorption member (8) is provided between the transition portion (3) and the feed portion (2); a slot (9) for the adsorption member (8) to be plugged in is provided at one end of the transition portion (3) close to the feed portion (2); and the inner wall of the feed portion (2) and the outer wall of the adsorption member (8) are plugged in.

3. The feeding structure of the intelligent film blowing machine according to claim 1 is characterized in that: The air hole (7) is a conical hole, and the diameter of the air hole (7) gradually decreases from the direction close to the cavity (5) to the direction away from the cavity (5).

4. The feeding structure of the intelligent film blowing machine according to claim 1 is characterized in that: A dust extraction port (10) which can communicate with the interior of the feeding portion (2) is arranged on the outer wall of the feeding portion (2), a dust extraction pipe (11) is arranged on the dust extraction port (10), and a pump body (12) is installed at one end of the dust extraction pipe (11) away from the dust extraction port (10).

5. The feeding structure of the intelligent film blowing machine according to claim 4 is characterized in that: A filter screen (13) is arranged in the dust extraction port (10), and the dust extraction port (10) is arranged obliquely on the feed portion (2). The distance between the axis of the dust extraction port and the outer wall of the feed portion (2) gradually increases from the direction close to the transition portion (3) to the direction away from the transition portion (3).

6. The feeding structure of the intelligent film blowing machine according to claim 1 is characterized in that: The feeding portion (2) is provided with a transparent window (14).

7. The feeding structure of the intelligent film blowing machine according to claim 1 is characterized in that: The connecting portion (4) is provided with a valve, and the valve is a quantitative valve (15).

Images