Particle filtering device for film blowing machine

Abstract

The utility model relates to the field of particle filtering devices for film blowing machines, in particular to a particle filtering device for a film blowing machine, and aims to solve the technical problems that a small particle filtering device for a film blowing machine adopts a manner of detaching a filter screen and washing with water to remove tiny particle adhesion, so that a drying step needs to be added after cleaning is completed, the process is tedious, and the labor cost during cleaning is wasted. According to the technical scheme, the particle filtering device for the film blowing machine comprises a filtering base, a vibration assembly, a coarse filtering structure, a fine filtering structure, a suction auxiliary structure, a dustproof structure and a sealing gasket, the vibration assembly driven by a motor is arranged on the upper surface of the filtering base, and the coarse filtering structure is installed on the side face of the vibration assembly; according to the utility model, residual fine particles at the corners of the filter tank are sucked and cleaned through the suction opening which is annularly arranged in a manner that the suction auxiliary structure is externally connected with suction equipment, so that the situation that the quality of finished products is influenced by the difference of components and physical properties generated by finished products due to the mixing of particles in different batches is prevented.

Description

Technical Field

[0001] The utility model belongs to the field of particle filtering devices for blown film machines, and particularly relates to a particle filtering device for a blown film machine. Background Art

[0002] The particles for blown film machines are raw material particles used in the production process of blown film machines. They are processed into film products through processes such as extrusion and blowing. Before processing, it is necessary to screen and filter the sizes of the blown film machine particles to prevent too large or too small particles from entering the blown film machine, which may cause uneven thickness of the formed film, thereby having an adverse impact on the aesthetics and strength of the finished film. Among them, micron-sized particles such as polycarbonate and polystyrene may stick to the bottom or corners of the filtering container due to their small size after filtration. Therefore, after screening, it is necessary to clean the particle residues on the filtering container to prevent the mixing of particles in different batches, resulting in differences in composition and physical properties, which have an adverse impact on the stability of the finished product.

[0003] However, the existing small-sized particle filtering devices for laboratory blown film machines often use the method of disassembling and washing the filter screen with water to remove the tiny particle adhesions inside the filtering container. This leads to the need for rinsing and drying after each filtration, with a rather cumbersome process and a waste of labor costs during cleaning.

[0004] Therefore, aiming at the problem that the above-mentioned small-sized particle filtering device for blown film machines uses the method of disassembling and washing the filter screen with water to remove tiny particle adhesions, resulting in the need for rinsing and drying after each filtration and a cumbersome cleaning process that wastes labor costs, a particle filtering device for a blown film machine is developed. By adding a device that uses a suction machine to suck out the particles at the bottom and corners of the filtering container to the particle filtering device for a blown film machine, the cleaning is faster and the labor costs during cleaning are saved. Summary of the Utility Model

[0005] In order to overcome the problem that the small-sized particle filtering device for blown film machines uses the method of disassembling and washing the filter screen with water to remove tiny particle adhesions, resulting in the need to add a drying step after cleaning and a cumbersome process that wastes labor costs during cleaning.

[0006] The technical solution of the utility model is as follows: A particle filtering device for a blown film machine includes a filtering base, a vibration component, a coarse filtering structure, a fine filtering structure, a suction assistance structure, a dust-proof structure, and a sealing gasket. A vibration component driven by a motor is arranged on the upper surface of the filtering base. A coarse filtering structure is installed on the side of the vibration component. A fine filtering structure is arranged below the coarse filtering structure. A suction assistance structure for cooperating with an external suction device is arranged inside the fine filtering structure. A dust-proof structure is arranged above the fine filtering structure. A circular sealing gasket is arranged inside the dust-proof structure.

[0007] Preferably, the vibration assembly drives the filter screen to perform high-frequency reciprocating up and down movements through a linear motor, so that the materials in the filter screen can fully contact the filter screen, improving the filtering effect. The coarse filtering structure screens out particles exceeding the standard diameter through a filter screen with a larger aperture, and cooperates with the fine filtering structure to filter particles that do not reach the standard diameter through a filter screen with a smaller aperture. By improving the uniformity of the finished product particle size, the thickness stability of the produced film is enhanced. The suction assistance structure uses an external suction device to suck and clean the fine particles remaining at the corners of the filter tank through the annularly arranged suction ports, thereby preventing the mixing of particles in different batches from causing differences in the composition and physical properties of the finished product and affecting the quality of the finished product. The dust-proof structure blocks dust through a lid screwed on with threads, preventing dust from being mixed in during the time-consuming fine filtering process and damaging the purity of the particles. The sealing gasket can strengthen the sealing performance of the lid, further enhancing the dust-proof effect.

[0008] Preferably, the vibration assembly includes a vibration motor and a fixing plate. A vibration motor with a telescopic function of the transmission element is fixedly connected to the upper surface of the filter base. Two fixing plates are fixedly connected to the side surface of the columnar transmission element of the vibration motor. The two filter screens are driven to perform high-frequency reciprocating up and down movements through the columnar transmission element of the vibration motor, so that the particles in the filter screen are scattered during the up and down movement, thus fully contacting the filter screen and improving the filtering effect.

[0009] Preferably, the coarse filtering structure includes a coarse filtering frame and a coarse filter screen. The coarse filtering frame is installed on the side surface of the fixing plate by screwing with bolts. The bottom of the coarse filtering frame is fixedly connected with a coarse filter screen. The mesh aperture of the coarse filter screen just allows the largest standard particles to pass through. The particles exceeding the standard diameter are intercepted by the coarse filter screen. By improving the uniformity of the finished product particle size, the thickness stability of the produced film is enhanced.

[0010] Preferably, the fine filtering structure includes a fine filtering frame and a fine filter screen. The fine filtering frame is installed on the side surface of the fixing plate by screwing with bolts. The bottom of the fine filtering frame is fixedly connected with a fine filter screen. The fine filtering frame is located below the coarse filtering frame. The mesh aperture of the fine filter screen just intercepts the smallest standard particles. The particles that do not reach the standard diameter are screened out by the fine filter screen. By improving the uniformity of the finished product particle size, the thickness stability of the produced film is enhanced.

[0011] Preferably, the suction assistance structure includes a suction groove, suction holes, and a connection hole. An annular suction groove is formed on the inner wall of the fine filter frame. A plurality of suction holes are annularly formed on the top surface of the suction groove. A connection hole is provided on the outer side of the fine filter frame. A cap is screwed and installed on the outer side of the connection hole. The connection hole communicates with all the suction holes. By connecting an external suction device to the connection hole, the negative pressure generated by the operation of the suction device is used to suck and clean the fine particles remaining at the corners of the filter tank from the annularly arranged suction holes, thereby preventing the mixing of particles in different batches from causing differences in composition and physical properties and having an adverse effect on the stability of the finished product.

[0012] Preferably, the dust-proof structure includes a dust-proof cover and a handle. The fine filter frame is screwed and installed with a dust-proof cover through the threaded structure on the outer side. A handle is fixedly connected to the upper surface of the dust-proof cover. Since the particles filtered by the fine filtration process are relatively fine and prone to adhesion and difficult to remove, a longer vibration filtration time is required. The dust-proof cover screwed on blocks the dust, preventing dust from mixing into the particles during the time-consuming fine filtration process and damaging the purity of the particles.

[0013] Preferably, an annular sealing gasket adapted to the top surface of the fine filter frame is fixedly connected to the inner top plate of the dust-proof cover. The sealing gasket is made of elastic silicone material. Due to the elastic silicone material of the sealing gasket, it is squeezed and deformed adaptively when the dust-proof cover is tightened to block the small gaps, strengthening the sealing performance of the dust-proof cover and further improving the dust-proof effect.

[0014] The beneficial effects of the present utility model:

[0015] 1. The vibration assembly drives the filter screen to make high-frequency reciprocating motions up and down through a linear motor, so that the materials in the filter screen are fully in contact with the filter screen, improving the filtering effect. The coarse filtering structure screens out particles exceeding the standard diameter through a filter screen with a larger diameter, and cooperates with the fine filtering structure to filter particles that do not reach the standard diameter through a filter screen with a smaller diameter. By improving the uniformity of the particle size of the finished product, the thickness stability of the produced film is improved. The suction assistance structure sucks and cleans the fine particles remaining at the corners of the filter tank from the annularly arranged suction ports by connecting an external suction device, thereby preventing the mixing of particles in different batches from causing differences in composition and physical properties and affecting the quality of the finished product. The dust-proof structure blocks the dust through a screwed-on lid, preventing dust from mixing in during the time-consuming fine filtration process and affecting the purity of the particles. Cooperating with the sealing gasket can strengthen the sealing performance of the lid and further improve the dust-proof effect.

[0016] 2. By connecting the suction device into the connection hole, the particle powder remaining at the corners of the filter tank is sucked and cleaned from the annularly designed suction holes, replacing the traditional cleaning steps of washing and drying, and improving the cleaning efficiency.

[0017] 3. Use a dust cover in combination with a sealing gasket to shield the filter tank during the longer and more time-consuming fine filtration process, preventing dust from mixing into the particles and damaging the purity of the particles. Description of the Drawings

[0018] Figure 1 Shown is a first three-dimensional structural schematic diagram of a particle filtration device for a blown film machine according to the present utility model;

[0019] Figure 2 Shown is a second three-dimensional structural schematic diagram of a particle filtration device for a blown film machine according to the present utility model;

[0020] Figure 3 Shown is a three-dimensional structural schematic diagram of a vibration assembly, a coarse filtration structure, and a fine filtration structure of a particle filtration device for a blown film machine according to the present utility model;

[0021] Figure 4 Shown is a cross-sectional three-dimensional structural schematic diagram of a suction assistance structure of a particle filtration device for a blown film machine according to the present utility model;

[0022] Figure 5 Shown is a three-dimensional structural schematic diagram of a dust prevention structure of a particle filtration device for a blown film machine according to the present utility model;

[0023] Figure 6 Shown is a three-dimensional structural schematic diagram of a sealing gasket of a particle filtration device for a blown film machine according to the present utility model.

[0024] Description of the Reference Numerals: 1, filter base; 2, vibration assembly; 3, coarse filtration structure; 4, fine filtration structure; 5, suction assistance structure; 6, dust prevention structure; 7, sealing gasket; 201, vibration motor; 202, fixing plate; 301, coarse filtration frame; 302, coarse filter screen; 401, fine filtration frame; 402, fine filter screen; 501, suction tank; 502, suction hole; 503, connection hole; 601, dust cover; 602, handle. Detailed Embodiment

[0025] The present utility model will be further described below with reference to the drawings and embodiments.

[0026] Please refer to Figure 1-2, the present utility model provides an embodiment: a particle filtering device for a blown film machine, which includes a filtering base 1, a vibration assembly 2, a coarse filtering structure 3, a fine filtering structure 4, a suction assistance structure 5, a dust prevention structure 6, and a sealing gasket 7. A vibration assembly 2 driven by a motor is arranged on the upper surface of the filtering base 1. A coarse filtering structure 3 is installed on the side of the vibration assembly 2. A fine filtering structure 4 is arranged below the coarse filtering structure 3. A suction assistance structure 5 for cooperating with an external suction device is arranged inside the fine filtering structure 4. A dust prevention structure 6 is arranged above the fine filtering structure 4. A circular sealing gasket 7 is arranged inside the dust prevention structure 6. By adding a device for sucking out the particles at the bottom and corners of the filtering container using a suction machine to the particle filtering device of the blown film machine, the cleaning is more rapid and the labor cost during cleaning is saved at the same time.

[0027] Please refer to Figure 3 , in this embodiment, the vibration assembly 2 includes a vibration motor 201 and a fixing plate 202. A vibration motor 201 with a telescopic function of the transmission element is fixedly connected to the upper surface of the filtering base 1. Two fixing plates 202 are fixedly connected to the side of the columnar transmission element of the vibration motor 201. The coarse filtering structure 3 includes a coarse filtering frame 301 and a coarse filter screen 302. The coarse filtering frame 301 is installed on the side of the fixing plate 202 by screwing with bolts. The coarse filter screen 302 is fixedly connected to the bottom of the coarse filtering frame 301. The mesh diameter of the coarse filter screen 302 just allows the largest standard particles to pass through. The fine filtering structure 4 includes a fine filtering frame 401 and a fine filter screen 402. The fine filtering frame 401 is installed on the side of the fixing plate 202 by screwing with bolts. The fine filter screen 402 is fixedly connected to the bottom of the fine filtering frame 401. The fine filtering frame 401 is located below the coarse filtering frame 301. The mesh diameter of the fine filtering frame 401 just intercepts the smallest standard particles. By driving the two filter screens to make high-frequency reciprocating motions up and down through the columnar transmission element of the vibration motor 201, the particles in the filter screens are dispersed during the up and down movements, so as to fully contact the filter screens, improving the filtering effect. The particles exceeding the standard diameter are intercepted by the coarse filter screen 302, and the thickness stability of the produced film is improved by improving the uniformity of the finished particle size. The particles not reaching the standard diameter are screened out by the fine filter screen 402, and the thickness stability of the produced film is improved by improving the uniformity of the finished particle size.

[0028] Please refer to Figure 4-5, in this embodiment, the suction assist structure 5 includes a suction groove 501, suction holes 502, and a connection hole 503. An annular suction groove 501 is formed on the inner wall of the fine filter frame 401. A plurality of suction holes 502 are annularly formed on the top surface of the suction groove 501. A connection hole 503 is provided on the outside of the fine filter frame 401. A cap is screwed and installed outside the connection hole 503. The connection hole 503 communicates with all the suction holes 502. By connecting an external suction device to the connection hole 503, the negative pressure generated by the operation of the suction device is used to suck and clean the fine particles remaining at the corners of the filter groove from the annularly arranged suction holes 502, thereby preventing the mixing of particles in different batches from causing differences in composition and physical properties and having an adverse effect on the stability of the finished product.

[0029] Please refer to Figure 5-6 , in this embodiment, the dust-proof structure 6 includes a dust-proof cover 601 and a handle 602. The fine filter frame 401 is screwed and installed with a dust-proof cover 601 through the external thread structure. A handle 602 is fixedly connected to the upper surface of the dust-proof cover 601. An annular sealing gasket 7 adapted to the top surface of the fine filter frame 401 is fixedly connected to the inner top plate of the dust-proof cover 601. The sealing gasket 7 is made of elastic silicone material. Since the particles filtered by the fine filtration process are relatively fine and prone to adhesion and difficult to remove, a longer vibration filtration time is required. The dust-proof cover 601 screwed on blocks dust, preventing dust from mixing into the particles during the time-consuming fine filtration process and damaging the purity of the particles. Through the elastic silicone material of the sealing gasket 7, it is squeezed to generate an adaptive deformation when the dust-proof cover 601 is tightened, blocking the small gaps and strengthening the sealing performance of the dust-proof cover 601, further improving the dust-proof effect.

[0030] When working, first, the coarse filter frame 301 and the fine filter frame 401 are respectively screwed and installed on the fixing plate 202 on the side of the columnar transmission element of the vibration motor 201 by bolts, so that the coarse filter frame 301 is above the fine filter frame 401. Then, a container for collecting waste is placed on the filter base 1, so that the collection container is directly below the fine filter frame 401;

[0031] Then, the particles from the blown film machine to be screened and filtered are poured into the coarse filter frame 301, and then the power is turned on to make the vibration motor 201 start to operate, so that the columnar transmission element of the vibration motor 201 starts to perform high-frequency reciprocating up and down movements, thereby driving the connected coarse filter frame 301 and fine filter frame 401 to vibrate together, so that the particles in the coarse filter net 302 are scattered during the up and down movement, so as to fully contact the coarse filter net 302, improve the filtering effect, intercept the particles with a diameter larger than the standard, and screen out the filtered particles onto the lower fine filter net 402;

[0032] After turning off the motor, screw the cap onto the connection hole 503 on the side of the fine filter frame 401 through the thread. Then, screw the dust cover 601 onto the outside of the fine filter frame 401 through the thread. The dust cover 601 and the top surface of the fine filter frame 401 squeeze the sealing washer 7 to generate adaptive deformation to block the tiny gaps, thereby improving the sealing performance of the container and preventing external dust from falling into and contaminating the particles during the long fine filtering process. Then, turn on the power supply to make the columnar transmission element of the vibration motor 201 start to perform high-frequency reciprocating motion up and down, so that the particles in the fine filter net 402 are scattered during the up and down movement, thus fully contacting the fine filter net 402, and screening out the particles with a diameter smaller than the standard and falling them into the collection container below;

[0033] After the screening is completed, the particles in the fine filter frame 401 are the particles that meet the standards. After taking out the particles, unscrew and remove the cap outside the connection hole 503 through the thread, screw the conduit of the external suction device onto the outside of the connection hole 503, and then start the suction device. Utilize the negative pressure generated by the operation of the suction device to suck and clean the fine particles remaining at the corners of the filter tank from the annularly arranged suction holes 502, thereby preventing the mixing of particles in different batches from causing differences in composition and physical properties and having an adverse impact on the stability of the finished product.

[0034] Through the above steps, the suction-assisted structure 5 sucks and cleans the fine particles remaining at the corners of the filter tank through the annularly arranged suction ports by means of an external suction device, thereby preventing the mixing of particles in different batches from causing differences in composition and physical properties of the finished product and affecting the quality of the finished product, and solving the problem that the particle filtering device of the small blown film machine adopts the method of disassembling and washing the filter screen to remove the adhesion of tiny particles, resulting in the need to add a drying step after cleaning, and the process is cumbersome and wastes the labor cost during cleaning.

[0035] The above has described the embodiments of the present invention in detail with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. A particle filtering device for a blown film machine, comprising a filtering base (1), characterized in that: It also includes a vibration component (2), a coarse filtration structure (3), a fine filtration structure (4), a suction assistance structure (5), a dust-proof structure (6), and a sealing gasket (7). A vibration component (2) driven by a motor is provided on the upper surface of the filtration base (1). A coarse filtration structure (3) is installed on the side of the vibration component (2). A fine filtration structure (4) is provided below the coarse filtration structure (3). A suction assistance structure (5) for cooperating with an external suction device is arranged inside the fine filtration structure (4). A dust-proof structure (6) is provided above the fine filtration structure (4). An annular sealing gasket (7) is arranged inside the dust-proof structure (6).

2. A particle filtering device for a blown film machine according to claim 1; characterized in that: The vibration component (2) includes a vibration motor (201) and a fixing plate (202). A vibration motor (201) with a telescopic transmission element is fixedly connected to the upper surface of the filtration base (1). Two fixing plates (202) are fixedly connected to the side of the columnar transmission element of the vibration motor (201).

3. A particle filtering device for a blown film machine according to claim 2, characterized in that: The coarse filtration structure (3) includes a coarse filtration frame (301) and a coarse filter mesh (302). The coarse filtration frame (301) is installed on the side of the fixing plate (202) by screwing with bolts. The coarse filter mesh (302) is fixedly connected to the bottom of the coarse filtration frame (301). The mesh diameter of the coarse filter mesh (302) just allows the passage of the largest standard particles.

4. A particle filtration device for a blown film machine according to claim 3; characterized in that: The fine filtration structure (4) includes a fine filtration frame (401) and a fine filter mesh (402). The fine filtration frame (401) is installed on the side of the fixing plate (202) by screwing with bolts. The fine filter mesh (402) is fixedly connected to the bottom of the fine filtration frame (401). The fine filtration frame (401) is located below the coarse filtration frame (301). The mesh diameter of the fine filtration frame (401) just intercepts the smallest standard particles.

5. A particle filtering device for a blown film machine according to claim 4, characterized in that: The suction assistance structure (5) includes a suction groove (501), suction holes (502), and a connection hole (503). An annular suction groove (501) is formed on the inner wall of the fine filtration frame (401). A number of suction holes (502) are annularly formed on the top surface of the suction groove (501). A connection hole (503) is arranged outside the fine filtration frame (401). A cap is installed on the outside of the connection hole (503) by screwing with threads. The connection hole (503) communicates with all the suction holes (502).

6. A particle filtration device for a blown film machine according to claim 4, characterized in that: The dust-proof structure (6) includes a dust-proof cover (601) and a handle (602). The dust-proof cover (601) is installed on the fine filtration frame (401) by screwing with the external thread structure. The handle (602) is fixedly connected to the upper surface of the dust-proof cover (601).

7. A particle filtration device for a blown film machine according to claim 6, characterized in that: An annular sealing gasket (7) adapted to the top surface of the fine filtration frame (401) is fixedly connected to the inner top plate of the dust-proof cover (601). The sealing gasket (7) is made of elastic silica gel material.

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