Raw material melting mixer for PVC film production

Abstract

The utility model belongs to the technical field of mixing machines, and particularly relates to a raw material melting mixing machine for PVC film production, the raw material melting mixing machine comprises a mixing kettle, a sealing cover is fixedly mounted at a kettle opening of the mixing kettle, an interference plate is connected to the sealing cover in an interference fit manner, and a mixing shaft is rotatably mounted at the center of the interference plate; the mixing shaft extends downwards, and a plurality of stirring assemblies are mounted on the surface of the mixing shaft. According to the utility model, the driving motor drives the mixing shaft to rotate, when the rotating speeds are different, the centrifugal forces of the overhanging stirring rods are different, and the unfolding angle of the overhanging stirring rods is changed, so that the rotating speeds of the mixing shaft are changed according to the amount of the PVC film raw materials, namely the more the raw materials are, the higher the rotating speed is, the larger the stirring range is, and the mixing rate is guaranteed; during working, the inner wall of the mixing kettle is cleaned by the bottom scraping brush and the side scraping strip, so that adhesion of the materials is avoided, the first manual valve is opened after processing is completed, and the materials can be discharged through the discharging pipe fitting for subsequent processing.

Description

A raw material melt mixer for PVC film production Technical Field

[0001] This utility model relates to a raw material melting and mixing machine, specifically a raw material melting and mixing machine for PVC film production. Background Technology

[0002] A thin film is a thin, soft, transparent sheet made of plastics, adhesives, rubber, or other materials. Scientifically, a thin film is defined as a two-dimensional material formed by the deposition of atoms, molecules, or ions on a substrate surface, such as optical thin films, composite thin films, superconducting thin films, polyester films, nylon films, and plastic films. Existing raw material melting devices for thin film production are inconvenient for turning the raw materials during heating, resulting in uneven heating. For example, Chinese utility model patent application CN217169228U discloses a high-efficiency plastic raw material mixer, including a base. Plastic raw materials are poured into the mixing body through a feeding hopper, and a stirring mechanism agitates the materials. Simultaneously, a first motor drives a first rotating shaft and a first spiral conveying blade to rotate, continuously conveying the raw materials at the bottom of the mixing body chamber to a guide box. Then, a second motor drives a second rotating shaft and a second spiral conveying blade to rotate, causing the second spiral conveying blade to return the raw materials in the guide box to the mixing body for further stirring through a connecting pipe.

[0003] Regarding the aforementioned technologies, in this device, the mixing body, stirring shaft, and stirring rod cause the plastic raw material to fall directly to the bottom of the mixing body during mixing, making effective mixing impossible. Summary of the Invention

[0004] The main objective of this disclosure is to provide a raw material melting and mixing machine for PVC film production, so as to effectively solve the problems raised by the inventors in the above-mentioned background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A raw material melting and mixing machine for PVC film production includes a mixing vessel. A sealing cover is fixedly installed at the opening of the mixing vessel. An interference plate is connected to the sealing cover with an interference fit. A mixing shaft is rotatably installed at the center of the interference plate. The mixing shaft extends downward and has several stirring components installed on its surface. A threaded base is threadedly installed on the interference plate, and a heating wire is fixedly installed at the bottom of the threaded base. The heating wire extends downward and is located above the uppermost stirring component. A drive motor is fixedly installed on the top of the interference plate, and the output end of the drive motor is fixedly connected to the mixing shaft.

[0007] Preferably, the stirring assembly includes positioning sleeves and suspended stirring rods. Several positioning sleeves are fixedly installed on the mixing shaft from bottom to top. Each positioning sleeve has four movable mounting ports arranged in a circular array on its side, and a pin is rotatably installed in the movable mounting port. The suspended stirring rod is fixedly installed on the pin.

[0008] Preferably, the length of the suspended stirring rods in the stirring assembly increases sequentially from bottom to top, and the spacing between the positioning sleeves increases sequentially from bottom to top.

[0009] Preferably, an extension frame is fixedly connected to the bottom end of the mixing shaft, and a bottom scraper is fixedly connected to the extension frame. A side scraper is fixedly connected to the top end of the bottom scraper. The bottom scraper contacts the inner bottom wall of the mixing vessel, and the side scraper contacts the inner side wall of the mixing vessel.

[0010] Preferably, a feed pipe is fixedly installed on the side of the mixing vessel, and a second manual valve is installed on the feed pipe; a discharge pipe is fixedly installed on the bottom of the mixing vessel, and a first manual valve is installed on the discharge pipe; and a support frame is fixedly installed on the bottom of the mixing vessel.

[0011] Preferably, the sealing cap is detachably installed to the mixing vessel via reinforcing bolts.

[0012] Preferably, a rotating handwheel is fixedly mounted on the top of the threaded base.

[0013] In view of this, compared with the prior art, the beneficial effects of this utility model are:

[0014] (i) In this application, the second manual valve is opened, and the raw materials for producing PCV film enter the mixing vessel through the feed pipe. After the second manual valve is closed, the drive motor works during the mixing operation, causing the mixing shaft to rotate. Then the positioning sleeve rotates, and under the action of centrifugal force, the suspended stirring rod unfolds and rotates to mix the PCV film raw materials. During this period, the heating wire works to increase the mixing temperature of the PCV film raw materials, realize the melt mixing operation, and improve production efficiency.

[0015] (II) In this application, during mixing, the drive motor drives the mixing shaft to rotate. When the rotation speed is different, the centrifugal force of the suspended stirring rod is different, and the angle at which it will unfold will also change. Thus, the rotation speed of the mixing shaft is changed according to the amount of PVC film raw material added. That is, the more raw material, the faster the rotation speed, so that the mixing range is larger and the mixing rate is guaranteed. During operation, the bottom scraper and the side scraper clean the inner wall of the mixing tank to avoid material adhesion. After processing is completed, the first manual valve is opened, and the material can be discharged through the discharge pipe for subsequent processing. Attached Figure Description

[0016] Figure 1 shows a schematic diagram of the internal structure of the raw material melting and mixing machine for PVC film production provided by this utility model;

[0017] Figure 2 shows an enlarged view of point A in Figure 1;

[0018] Figure 3 shows a top view of the positioning sleeve;

[0019] Figure 4 shows a schematic diagram of the suspended stirring rod in Figure 3 after it has been deployed.

[0020] icon:

[0021] 1-Mixing vessel; 2-Sealing cover; 3-Interference plate; 4-Mixing shaft; 5-Positioning sleeve; 6-Modible mounting port; 7-Pin shaft; 8-Suspended stirring rod; 9-Extension frame; 10-Bottom scraper; 11-Side scraper; 12-Discharge pipe fitting; 13-First manual valve; 14-Support base frame; 15-Threaded base; 16-Heating wire; 17-Infeed pipe fitting; 18-Second manual valve; 19-Rotating handwheel; 20-Drive motor; 21-Reinforcing bolt. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please refer to Figures 1-4. The present invention provides the following embodiments:

[0024] A raw material melting and mixing machine for PVC film production includes a mixing vessel 1. A sealing cover 2 is fixedly installed at the opening of the mixing vessel 1. An interference plate 3 is connected to the sealing cover 2 with an interference fit. A mixing shaft 4 is rotatably installed at the center of the interference plate 3. The mixing shaft 4 extends downward and has several stirring components installed on its surface. A threaded base 15 is threadedly installed on the interference plate 3. A heating wire 16 is fixedly installed at the bottom of the threaded base 15. The heating wire 16 extends downward and is located above the uppermost stirring component. A rotating handwheel 19 is fixedly installed at the top of the threaded base 15. A drive motor 20 is fixedly installed at the top of the interference plate 3, and the output end of the drive motor 20 is fixedly connected to the mixing shaft 4.

[0025] Specifically, the mixing assembly includes positioning sleeves 5 and suspended mixing rods 8. Several positioning sleeves 5 are fixedly installed on the mixing shaft 4 from bottom to top. Each positioning sleeve 5 has four movable mounting ports 6 arranged in a circular array on its side. A pin 7 is rotatably installed in the movable mounting port 6. A suspended mixing rod 8 is fixedly installed on the pin 7. The length of the suspended mixing rod 8 in the mixing assembly increases sequentially from bottom to top, and the distance between the positioning sleeves 5 increases sequentially from bottom to top.

[0026] Specifically, an extension frame 9 is fixedly connected to the bottom end of the mixing shaft 4, and a bottom scraper 10 is fixedly connected to the extension frame 9. A side scraper 11 is fixedly connected to the top end of the bottom scraper 10. The bottom scraper 10 contacts the inner bottom wall of the mixing vessel 1, and the side scraper 11 contacts the inner side wall of the mixing vessel 1.

[0027] Specifically, a feed pipe 17 is fixedly installed on the side of the mixing vessel 1, and a second manual valve 18 is installed on the feed pipe 17. A discharge pipe 12 is fixedly installed at the bottom of the mixing vessel 1, and a first manual valve 13 is installed on the discharge pipe 12. A support frame 14 is fixedly installed at the bottom of the mixing vessel 1.

[0028] Specifically, the sealing cover 2 and the mixing vessel 1 are detachably installed by means of reinforcing bolts 21.

[0029] The specific implementation method of this embodiment is as follows: After opening the second manual valve 18, the raw materials for producing PCV film enter the mixing vessel through the feed pipe 17 and then the second manual valve 18 is closed. During the mixing operation, the drive motor 20 works, which drives the mixing shaft 4 to rotate, and then the positioning sleeve 5 rotates. Under the action of centrifugal force, the suspended stirring rod 8 unfolds and rotates to mix the PCV film raw materials. During this period, the heating wire 16 works to increase the mixing temperature of the PCV film raw materials, realize the melt mixing operation, and improve production efficiency.

[0030] During mixing, the drive motor 20 drives the mixing shaft 4 to rotate. When the rotation speed is different, the centrifugal force of the suspended stirring rod 8 is different, and its unfolding angle will also change. Thus, the rotation speed of the mixing shaft 4 is changed according to the amount of PVC film raw material added. That is, the more raw material, the faster the rotation speed, so that the mixing range is larger and the mixing rate is guaranteed. During operation, the bottom scraper 10 and the side scraper 11 clean the inner wall of the mixing vessel 1 to prevent the material from adhering. After processing is completed, the first manual valve 13 is opened, and the material can be discharged through the discharge pipe 12 for subsequent processing.

[0031] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A raw material melting and mixing machine for PVC film production, characterized by: The mixture includes a mixing vessel (1), a sealing cover (2) is fixedly installed at the opening of the mixing vessel (1), an interference plate (3) is connected to the sealing cover (2) with an interference fit, and a mixing shaft (4) is rotatably installed at the center of the interference plate (3). The mixing shaft (4) extends downward and has several stirring components installed on its surface. A threaded base (15) is threaded on the interference plate (3), and a heating wire (16) is fixedly installed at the bottom of the threaded base (15). The heating wire (16) extends downward and is located above the uppermost stirring component. A drive motor (20) is fixedly installed at the top of the interference plate (3), and the output end of the drive motor (20) is fixedly connected to the mixing shaft (4).

2. The raw material melting and mixing machine for PVC film production according to claim 1, characterized in that: The stirring assembly includes a positioning sleeve (5) and a suspended stirring rod (8). Several positioning sleeves (5) are fixedly installed on the mixing shaft (4) from bottom to top. Each positioning sleeve (5) has four movable mounting ports (6) arranged in a ring array on its side. A pin (7) is rotatably installed in the movable mounting port (6). The suspended stirring rod (8) is fixedly installed on the pin (7).

3. The raw material melting and mixing machine for PVC film production according to claim 2, characterized in that: The lengths of the suspended stirring rods (8) in the stirring assembly increase sequentially from bottom to top, and the spacing between the positioning sleeves (5) increases sequentially from bottom to top.

4. The raw material melting and mixing machine for PVC film production according to claim 1, characterized in that: An extension frame (9) is fixedly connected to the bottom end of the mixing shaft (4), and a bottom scraper (10) is fixedly connected to the extension frame (9). A side scraper (11) is fixedly connected to the top end of the bottom scraper (10). The bottom scraper (10) contacts the inner bottom wall of the mixing vessel (1), and the side scraper (11) contacts the inner side wall of the mixing vessel (1).

5. The raw material melting and mixing machine for PVC film production according to claim 1, characterized in that: A feed pipe (17) is fixedly installed on the side of the mixing vessel (1), and a second manual valve (18) is installed on the feed pipe (17). A discharge pipe (12) is fixedly installed at the bottom of the mixing vessel (1), and a first manual valve (13) is installed on the discharge pipe (12). A support frame (14) is fixedly installed at the bottom of the mixing vessel (1).

6. The raw material melting and mixing machine for PVC film production according to claim 1, characterized in that: The sealing cover (2) is detachably installed between the mixing vessel (1) and the mixing vessel (1) by a reinforcing bolt (21).

7. The raw material melting and mixing machine for PVC film production according to claim 1, characterized in that: A rotating handwheel (19) is fixedly installed on the top of the threaded base (15).

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