Plastic melt high-precision quantitative conveying device

Abstract

The utility model relates to the technical field of mechanical engineering, in particular to a plastic melt high-precision quantitative conveying device which comprises a high-precision quantitative conveying device body, a temperature sensor is arranged on the outer wall of an output pipe of the high-precision quantitative conveying device body, and a pressure sensing assembly is arranged on the outer wall of an input pipe of the high-precision quantitative conveying device body. Telescopic assemblies are arranged at the two ends of the high-precision quantitative conveying device, the telescopic assembly on the left side is connected with a filter box through bolts, and the filter box is connected with a filter screen through a connecting structure. According to the high-precision quantitative conveying device, impurities in a plastic solution can be filtered and collected by the filter screen before entering the high-precision quantitative conveying device through the filter box and the filter screen, and the filter screen can be easily taken out through the limiting column to be cleaned, so that the impurities can be better filtered out and cannot enter products along with the plastic solution; and the performance and appearance of the product are not influenced, so that the qualified rate of the product is greatly increased.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical engineering, in particular to a high-precision quantitative conveying device for plastic melt. Background Art

[0002] Plastic melt refers to the state in which plastic changes from a solid state to a liquid state with fluidity after being heated to a certain temperature. Plastics are usually high molecular polymers and are in a solid state when not heated. When heated to a specific temperature range, the intermolecular forces weaken, and the molecular chains can start to move relatively freely, thus forming a plastic melt with certain fluidity and deformability. For example, in the injection molding process, plastic particles are heated to a molten state to form a plastic melt, which is then injected into the mold cavity and cooled and solidified to obtain the required plastic products. Common plastics such as polyethylene and polypropylene will undergo the transformation from a solid state to a melt state during the processing.

[0003] In the plastic processing industry, the conveying of plastic melt is a key link. With the continuous improvement of the quality requirements of plastic products, higher requirements are put forward for the accuracy and stability of plastic melt conveying. However, during the storage, transportation and processing of conventional plastic raw materials, it is easy to mix in impurities and foreign matters, such as dust, particles, fibers, etc. If these impurities are not filtered and removed, they will enter the products along with the plastic melt, seriously affecting the performance and appearance of the products and reducing the qualified rate of the products. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the shortcomings that during the storage, transportation and processing of existing conventional plastic raw materials, it is easy to mix in impurities and foreign matters, such as dust, particles, fibers, etc. If these impurities are not filtered and removed, they will enter the products along with the plastic melt, seriously affecting the performance and appearance of the products and reducing the qualified rate of the products, and to propose a high-precision quantitative conveying device for plastic melt.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A high-precision quantitative conveying device for plastic melt, including a high-precision quantitative conveying device. A temperature sensor is arranged on the outer wall of the output pipe of the high-precision quantitative conveying device, a pressure sensing assembly is arranged on the outer wall of the input pipe of the high-precision quantitative conveying device, telescopic assemblies are arranged at both ends of the high-precision quantitative conveying device, the left telescopic assembly is connected with a filter box through a bolt, and the filter box is connected with a filter screen through a connecting structure.

[0007] Preferably, the pressure sensing assembly includes a pressure sensor, a bolt, and a pressure pipe. The pressure pipe is connected through the wall of the outer pipe of the high-precision quantitative conveying device. The pressure sensor is arranged directly above the pressure pipe and is connected to the pressure pipe through the bolt.

[0008] Preferably, the telescopic assembly includes a bellows expansion joint, a gasket, and a connecting bolt. The bellows expansion joint is fixedly connected to both ends of the high-precision quantitative conveying device. The gasket is pasted on the outer wall of one end of the bellows expansion joint away from the high-precision quantitative conveying device through glue. The connecting bolt penetrates through the outer wall of the bellows expansion joint and is connected to the subsequent device.

[0009] Preferably, the connecting structure includes a mounting hole, uniformly distributed threaded holes, a sliding hole, a limiting post, a spring, and an external thread. The mounting hole is arranged on the filter box and is in a convex shape. The threaded holes are arranged on the outer wall of the filter box. The sliding hole is arranged on the inner wall of the mounting hole. The limiting post is slidably connected to the inner wall of the sliding hole. One end of the spring is fixedly connected to the inner wall of the sliding hole. The external thread is arranged on the outer wall of the limiting post.

[0010] Preferably, the top end of the limiting post penetrates through the outer wall of the filter box and is threadedly connected. The other end of the spring is fixedly connected to the outer wall of the limiting post.

[0011] Preferably, an installation block is arranged on the filter mesh. Uniformly distributed limiting holes are formed on the outer wall of the installation block. A filter mesh in a frustum shape is fixedly connected to the outer wall of the installation block.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] When the present utility model is in use, through the arranged filter box and filter mesh, impurities in the plastic melt can be filtered and collected by the filter mesh before entering the high-precision quantitative conveying device. After filtration, by rotating the limiting post, the filter mesh loses its restriction and can be easily taken out for cleaning, so that impurities can be better filtered out and will not enter the product along with the plastic melt, which will not affect the performance and appearance of the product, and greatly increases the qualified rate of the product. Description of the Drawings

[0014] Figure 1 is a three-dimensional structural schematic diagram of a high-precision quantitative conveying device for plastic melt proposed by the present utility model;

[0015] Figure 2 is a top view of a high-precision quantitative conveying device for plastic melt proposed by the present utility model;

[0016] Figure 3Schematic three-dimensional structure diagram of the filter box of a high-precision quantitative conveying device for plastic melt proposed by the present utility model;

[0017] Figure 4 Enlarged view of part A of the structure of a high-precision quantitative conveying device for plastic melt proposed by the present utility model;

[0018] Figure 5 Schematic three-dimensional structure diagram of the filter net of a high-precision quantitative conveying device for plastic melt proposed by the present utility model.

[0019] In the figure: 1 High-precision quantitative conveying device, 2 Temperature sensor, 3 Pressure sensing component, 31 Pressure sensor, 32 Bolt, 33 Pressure pipe, 4 Telescopic component, 41 Bellows expansion joint, 42 Sealing gasket, 43 Connecting bolt, 5 Filter box, 51 Mounting hole, 52 Threaded hole, 53 Sliding hole, 54 Limiting column, 55 Spring, 56 External thread, 6 Filter net, 61 Mounting block, 62 Limiting hole, 63 Filter mesh. Specific implementation manners

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Refer to Figures 1 - 5 , a high-precision quantitative conveying device for plastic melt, including a high-precision quantitative conveying device 1. A temperature sensor 2 is provided on the outer wall of the output pipe of the high-precision quantitative conveying device 1. A pressure sensing component 3 is provided on the outer wall of the input pipe of the high-precision quantitative conveying device 1. Telescopic components 4 are provided at both ends of the high-precision quantitative conveying device 1. The left telescopic component 4 is connected to a filter box 5 through a bolt. The filter box 5 is connected to a filter net 6 through a connecting structure.

[0022] It should be noted that the high-precision quantitative conveying device 1, the temperature sensor 2, the pressure sensor 31, and the bellows expansion joint 41 are prior arts. The specific model specifications need to be selected according to the actual specifications of the device, etc. The specific selection calculation method adopts the prior art in this field, so it will not be elaborated.

[0023] Furthermore, the pressure sensing component 3 includes a pressure sensor 31, a bolt 32, and a pressure pipe 33. The pressure pipe 33 is connected to the outer wall of the input pipe of the high-precision quantitative conveying device 1 in a penetrating manner. The pressure sensor 31 is arranged directly above the pressure pipe 33. The pressure sensor 31 is connected to the pressure pipe 33 through the bolt 32.

[0024] Among them, connecting plates are provided at the bottom end of the pressure sensor 31 and the top end of the pressure pipe 33. The connecting plates are close to each other and are limitedly connected by bolts 32, so that the pressure sensor 31 can be connected to the pressure pipe 33 and detect the pressure data inside the pipe.

[0025] Further, the telescopic assembly 4 includes a bellows expansion joint 41, a gasket 42, and a connecting bolt 43. The bellows expansion joint 41 is fixedly connected to both ends of the high-precision quantitative conveying device 1. The gasket 42 is adhered to the outer wall of one end of the bellows expansion joint 41 away from the high-precision quantitative conveying device 1 by glue. The connecting bolt 43 penetrates through the outer wall of the bellows expansion joint 41 and is connected to the subsequent device.

[0026] Among them, the gasket 42 is provided with a notch at the same position as the connecting bolt 43, so that when the connecting bolt 43 is connected to other devices, it will not damage the gasket 42, resulting in the fracture of the gasket 42 and the decline of the sealing effect.

[0027] Further, the connecting structure includes a mounting hole 51, uniformly distributed threaded holes 52, a sliding hole 53, a limiting post 54, a spring 55, and an external thread 56. The mounting hole 51 is provided on the filter box 5 and is provided in a convex shape. The threaded holes 52 are provided on the outer wall of the filter box 5. The sliding hole 53 is provided on the inner wall of the mounting hole 51. The limiting post 54 is slidably connected to the inner wall of the sliding hole 53. One end of the spring 55 is fixedly connected to the inner wall of the sliding hole 53. The external thread 56 is provided on the outer wall of the limiting post 54.

[0028] Among them, the spring 55 is sleeved on the outer wall of the limiting post 54, so that the spring 55 can pull the limiting post 54 to prevent it from falling off, and can also make the connection of the limiting post 54 more tight.

[0029] Further, the top end of the limiting post 54 penetrates through the outer wall of the filter box 5 and is threadedly connected. The other end of the spring 55 is fixedly connected to the outer wall of the limiting post 54.

[0030] Among them, the outer shape and size of the filter screen 6 are adapted to the inner size of the mounting hole 51, so that when the filter screen 6 is impacted by the plastic melt, it will not be deformed.

[0031] Further, the filter screen 6 is provided with a mounting block 61. Uniformly distributed limiting holes 62 are provided on the outer wall of the mounting block 61. A filter screen 63 in a frustum shape is fixedly connected to the outer wall of the mounting block 61.

[0032] Among them, the limiting post 54 is slidably connected to the limiting hole 62, so that the filter screen 6 can be firmly installed in the filter box 5 and is also easier to disassemble.

[0033] Working principle: The telescopic component 4, the pressure sensing component 3, and the temperature sensor 2 are all pre-installed on the high-precision quantitative conveying device 1. The pressure sensing component 3 is used to detect the pressure in the pipeline, and the temperature sensor 2 is used to detect the temperature change in the pipeline. Then, the installation of the filter box 5 and the filter screen 6 can be carried out. First, the filter box 5 can be installed on the input pipe side of the high-precision quantitative conveying device 1 and connected to the telescopic component 4. Then, the filter screen 6 is inserted into the installation hole 51 so that the filter screen 63 fits against the inner wall of the installation hole 51. Then, the limiting hole 62 is aligned with the sliding hole 53, and the limiting column 54 is manually rotated. Under the action of the external thread 56, the limiting column 54 moves downward and enters the limiting hole 62. Then, the filter box 5 is connected to other devices and the filter screen 6 is squeezed in the middle, so that the filter screen 6 will not fall off easily. When disassembling, it only needs to disconnect the connection of the filter box 5 and manually rotate the limiting column 54 in the reverse direction so that the limiting column 54 can leave the limiting hole 62, and then it can be taken out for cleaning. Thus, impurities can be better filtered out and will not enter the product along with the plastic melt, which will not affect the performance and appearance of the product, and greatly increases the qualified rate of the product.

[0034] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A high-precision quantitative conveying device for plastic melt, comprising a high-precision quantitative conveying device (1), characterized in that, A temperature sensor (2) is provided on the outer wall of the output pipe of the high-precision quantitative conveying device (1). A pressure sensing assembly (3) is provided on the outer wall of the input pipe of the high-precision quantitative conveying device (1). Telescopic assemblies (4) are provided at both ends of the high-precision quantitative conveying device (1). The left telescopic assembly (4) is connected to a filter box (5) by bolts. The filter box (5) is connected to a filter net (6) through a connection structure.

2. The high-precision quantitative conveying device for plastic melt according to claim 1, wherein The pressure sensing assembly (3) includes a pressure sensor (31), bolts (32), and a pressure pipe (33). The pressure pipe (33) is connected to the outer wall of the input pipe of the high-precision quantitative conveying device (1) in a penetrating manner. The pressure sensor (31) is provided directly above the pressure pipe (33). The pressure sensor (31) is connected to the pressure pipe (33) by bolts (32).

3. A high-precision quantitative conveying device for plastic melt according to claim 1, characterized in that, The telescopic assembly (4) includes a bellows expansion joint (41), a gasket (42), and connection bolts (43). The bellows expansion joint (41) is fixedly connected to both ends of the high-precision quantitative conveying device (1). The gasket (42) is adhesively attached to the outer wall of the end of the bellows expansion joint (41) away from the high-precision quantitative conveying device (1). The connection bolts (43) penetrate the outer wall of the bellows expansion joint (41) and are connected to the subsequent device.

4. A high-precision quantitative conveying device for plastic melt according to claim 1, characterized in that The connection structure includes a mounting hole (51), uniformly distributed threaded holes (52), a sliding hole (53), a limiting post (54), a spring (55), and an external thread (56). The mounting hole (51) is provided on the filter box (5) and is in a convex shape. The threaded holes (52) are provided on the outer wall of the filter box (5). The sliding hole (53) is provided on the inner wall of the mounting hole (51). The limiting post (54) is slidably connected to the inner wall of the sliding hole (53). One end of the spring (55) is fixedly connected to the inner wall of the sliding hole (53). The external thread (56) is provided on the outer wall of the limiting post (54).

5. The high-precision quantitative conveying device for plastic melt according to claim 4, characterized in that, The top end of the limiting post (54) penetrates the outer wall of the filter box (5) and is threadedly connected. The other end of the spring (55) is fixedly connected to the outer wall of the limiting post (54).

6. The high-precision quantitative conveying device for plastic melt according to claim 1, characterized in that, The filter net (6) is provided with a mounting block (61). Uniformly distributed limiting holes (62) are provided on the outer wall of the mounting block (61). A conical filter (63) is fixedly connected to the outer wall of the mounting block (61).

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