Dust removal device for medical PVC granule production

Abstract

The utility model relates to the field of dust removal equipment, in particular to a dust removal device for medical PVC (polyvinyl chloride) aggregate production, which comprises a feed pipe, an upper-end annular pipe and a dust collection box, the feed pipe is arranged at the upper end of a device shell, support plates are arranged on two sides of the device shell, the dust collection box is fixed at the upper ends of the support plates, and the upper end of the dust collection box is communicated with a connecting pipe. The PVC aggregate dust collection device has the advantages that through cooperative work of the upper end annular pipe, the lower end annular pipe, the dust collection box and the dust collection fan, dust particles in the device shell can be effectively adsorbed, the dust content in PVC aggregates is remarkably reduced, the dust collection effect is good, and the PVC aggregate dust collection device is suitable for popularization and application. The product quality is improved; according to the electrostatic adsorption principle, the electrostatic adsorption sleeve on the stirring shaft is provided with electrostatic charges through the electrostatic generator, so that dust particles with positive electricity are attracted and fixed, the dust removal effect is enhanced, and meanwhile, normal discharge of PVC granules is not affected.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal equipment, in particular to a dust removal device for the production of medical PVC pellets. Background Technique

[0002] Medical PVC pellets, that is, polyvinyl chloride (PVC) pellets at the medical grade, are PVC raw materials designed and manufactured specifically for medical applications. During the production process of polyvinyl chloride plastic pellets, an extruder is used to extrude the plastic into a strip-shaped plastic product, which is then cut into granular form.

[0003] In the related art, after the medical PVC is cut into granular form, the medical PVC pellets often adhere to fine dust, thereby affecting the quality of the plastic pellets. For this reason, we propose a dust removal device for the production of medical PVC pellets.

[0004] The above information disclosed in this background technical section is only used to understand the background technology of the inventive concept, and therefore, it may include information that does not constitute the prior art. Content of the Utility Model

[0005] The purpose of the utility model is to provide a dust removal device for the production of medical PVC pellets, so as to solve the problem that after the medical PVC is cut into granular form, the medical PVC pellets often adhere to fine dust, thereby affecting the quality of the plastic pellets as mentioned in the above background technology.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A dust removal device for the production of medical PVC pellets, comprising a device housing, a feed pipe, an upper annular pipe and a dust collection box. The upper end of the device housing is connected with a feed pipe, the lower end of the feed pipe is connected with the inside of the device housing, the upper end of the feed pipe is detachably installed with a sealing cover plate. The left and right sides of the device housing are symmetrically and horizontally welded with support plates, the upper ends of the support plates are fixedly installed with a dust collection box, the upper end of the dust collection box is vertically connected with a connecting pipe, the upper end of the connecting pipe is connected with the inside of the upper annular pipe, the upper annular pipe is arranged around the upper side of the device housing, and a plurality of dust suction pipes are connected to the side of the upper annular pipe close to the device housing. One end of the dust suction pipe is arranged inside the device housing, and a dust suction port is opened at one end of the dust suction pipe inside the device housing. The lower end of the dust collection box is connected with the same connecting pipe, the lower end of the connecting pipe penetrates through the support plate and is connected with the lower annular pipe, the lower annular pipe is arranged around the lower side of the device housing, and a dust suction pipe is connected to the side of the lower annular pipe close to the device housing. One end of the dust suction pipe extends into the device housing, and a dust suction port is opened at one end of the dust suction pipe inside the device housing.

[0008] In some embodiments, a stirring motor is installed at the central position of the upper end of the device housing, the lower output end of the stirring motor is connected with a stirring shaft, the lower end of the stirring shaft penetrates through the upper wall surface of the device housing, and a plurality of mounting rods are integrally formed on the side surface of the stirring shaft.

[0009] In some embodiments, an electrostatic adsorption sleeve is sleeved on the side surface of the mounting rod, and an electrostatic generator is arranged on the side surface of the upper end of the stirring shaft.

[0010] In some embodiments, support columns are vertically welded on the left and right sides of the lower end of the device housing, a discharge pipe is connected at the central position of the lower end of the device housing, and a stop valve is installed on the discharge pipe.

[0011] In some embodiments, the connecting pipe and the dust collection box are sealed, a dust suction fan is installed on the side surface of the dust collection box, and a filter screen is installed at the contact position between the dust suction fan and the dust collection box.

[0012] In some embodiments, a controller is installed at the front end of the device housing.

[0013] The beneficial effects of the present utility model are:

[0014] Through the coordinated operation of the upper annular pipe, the lower annular pipe, the dust collection box and the dust suction fan, the dust particles inside the device housing can be effectively adsorbed, the dust content in the PVC pellets can be significantly reduced, and the product quality can be improved; by utilizing the principle of electrostatic adsorption, the electrostatic adsorption sleeve on the stirring shaft is charged with static electricity through an electrostatic generator, so as to attract and fix the positively charged dust particles, enhance the dust removal effect, and at the same time not affect the normal discharge of the PVC pellets; the device housing is designed with a sealing cover plate and a stop valve to ensure good sealing performance of the whole system, prevent dust leakage, and at the same time control the discharging process through the stop valve to ensure the normal operation of the dust suction fan; the air inlet arranged at the rear end of the device cooperates with the dust suction fan at the front end to form an effective air circulation system, and the dust-proof filter net on the air inlet prevents external dust from entering and keeps the internal environment clean; the structural design of the device housing is convenient for maintenance and cleaning, such as the detachable sealing cover plate, and the setting of the dust collection box is convenient for regularly cleaning the accumulated dust to ensure the long-term stable operation of the equipment; the inclined setting at the lower end inside the device housing helps the PVC pellets to smoothly discharge from the discharge pipe, reduces material residue and improves production efficiency. Brief Description of the Drawings

[0015] Figure 1 FIG. is a schematic structural view of a dust removal device for medical PVC pellet production proposed by the present utility model;

[0016] Figure 2 FIG. is a schematic internal structural view of a dust removal device for medical PVC pellet production proposed by the present utility model;

[0017] Figure 3 FIG. is a schematic structural view of a dust suction assembly of a dust removal device for medical PVC pellet production proposed by the present utility model.

[0018] In the figure: 1 is the device housing, 2 is the upper annular pipe, 3 is the connecting pipe, 4 is the support plate, 5 is the dust suction fan, 6 is the lower annular pipe, 7 is the support column, 8 is the controller, 9 is the discharge pipe, 10 is the stop valve, 11 is the stirring motor, 12 is the stirring shaft, 13 is the mounting rod, 14 is the electrostatic adsorption sleeve, 15 is the feed pipe, 16 is the sealing cover plate, 17 is the dust suction pipe, 18 is the dust suction port, 19 is the dust collection box. Detailed Description of the Preferred Embodiments

[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to 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.

[0020] It should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0021] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "installed", "connected", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0022] Refer to Figure 1 、 2 、3, a dust removal device for the production of medical PVC pellets, including a device housing 1, a feed pipe 15, an upper annular pipe 2 and a dust collection box 19. The upper end of the device housing 1 is communicatively provided with a feed pipe 15, the lower end of the feed pipe 15 is communicatively provided with the inside of the device housing 1, the upper end of the feed pipe 15 is detachably installed with a sealing cover plate 16. The left and right sides of the device housing 1 are symmetrically and horizontally welded with support plates 4, the upper ends of the support plates 4 are fixedly installed with a dust collection box 19, the upper end of the dust collection box 19 is vertically communicatively provided with a connecting pipe 3, the upper end of the connecting pipe 3 is communicatively provided with the inside of the upper annular pipe 2, the upper annular pipe 2 is arranged around the upper side of the device housing 1, and multiple dust suction pipes 17 are communicatively provided on one side of the upper annular pipe 2 close to the device housing 1. One end of the dust suction pipe 17 is arranged inside the device housing 1, and a dust suction port 18 is opened at one end of the dust suction pipe 17 inside the device housing 1. The lower end of the dust collection box 19 is communicatively provided with the same connecting pipe 3, the lower end of the connecting pipe 3 penetrates through the support plate 4 and is communicatively provided with a lower annular pipe 6, the lower annular pipe 6 is arranged around the lower side of the device housing 1, and a dust suction pipe 17 is communicatively provided on one side of the lower annular pipe 6 close to the device housing 1. One end of the dust suction pipe 17 extends into the device housing 1, and a dust suction port 18 is opened at one end of the dust suction pipe 17 inside the device housing 1. By providing the upper annular pipe 2, the lower annular pipe 6, the dust collection box 19 and the dust suction fan 5, the dust particles inside the device housing 1 are adsorbed, effectively reducing the dust content of the PVC pellets.

[0023] When the specific implementation of the embodiment of the present utility model is carried out, such as Figure 1 、 2As shown in the figure, a stirring motor 11 is installed at the central position of the upper end of the device housing 1. The lower output end of the stirring motor 11 is connected with a stirring shaft 12. The lower end of the stirring shaft 12 penetrates through the upper end wall surface of the device housing 1. Multiple mounting rods 13 are integrally formed on the side surface of the stirring shaft 12. An electrostatic adsorption sleeve 14 is sleeved and installed on the side surface of the mounting rod 13. An electrostatic generator is provided on the side surface of the upper end of the stirring shaft 12. The electrostatic generator can be a coronal discharge needle, a corona discharge device or other common electrostatic generating devices of other types. The electrostatic adsorption sleeve 14 is charged with static electricity through the electrostatic generator, usually negative charge. When the charged electrostatic adsorption sleeve 14 contacts the plastic particles, the dust on the particles (usually positively charged) will be attracted and adhered to the adsorption sleeve. This adsorption force is sufficient to overcome gravity and other acting forces to fix the dust on the adsorption sleeve. The PVC pellets can be discharged from the discharge pipe under the action of gravity. Through the electrostatic adsorption sleeve and the electrostatic generator, with the cooperation of relevant connection circuits, a common electrostatic adsorption and dust removal structure is formed.

[0024] When the embodiment of the present utility model is specifically implemented, as Figure 1 、 2 shown, support columns 7 are vertically welded on the left and right sides of the lower end of the device housing 1. A discharge pipe 9 is communicated at the central position of the lower end of the device housing 1. A stop valve 10 is installed on the discharge pipe 9. The discharge pipe 9 is sealed through the stop valve 10 to ensure the overall sealing performance of the device housing 1 and ensure the normal dust suction operation of the dust suction fan 5. And the inner lower end of the device housing 1 is inclined to facilitate the discharge of PVC pellets from the discharge pipe 9.

[0025] When the embodiment of the present utility model is specifically implemented, as Figure 1 、 2 shown, the connecting pipe 3 is hermetically arranged with the dust collection box 19. A dust suction fan 5 is installed on the side surface of the dust collection box 19. A filter screen is installed at the contact position between the dust suction fan 5 and the dust collection box 19. A controller 8 is installed at the front end of the device housing 1. The dust suction fan 5 extracts the air inside the device housing 1. Correspondingly, an air inlet is communicated at the rear end of the device housing 1, and a dust-proof filter screen is arranged on the air inlet to realize the air circulation inside the device housing 1 while preventing external dust from entering the inside of the device housing 1.

[0026] In this embodiment, the components are all common standard components or components known to those skilled in the art. Their structures and connection principles can be learned by those skilled in the art through technical manuals or obtained through conventional experimental methods. The PVC pellets enter the device housing 1 through the feed pipe 15. The detachable sealing cover plate 16 at the upper end of the feed pipe 15 ensures the sealing of the device. A plurality of dust suction pipes 17 on the upper annular pipe 2 and the lower annular pipe 6 inside the device housing 1 start to work. The dust suction fan 5 is started, and suction is generated inside the device housing 1 through the dust suction pipes 17 to suck the dust particles in the pellets into the dust collection box 19, achieving preliminary dust separation. The stirring motor 11 drives the stirring shaft 12 to rotate. The electrostatic adsorption sleeve 14 installed on the side of the stirring shaft 12 is charged with static electricity under the action of the electrostatic generator. When the stirring shaft 12 rotates, the electrostatic adsorption sleeve 14 with static electricity comes into contact with the PVC pellets. Since dust usually carries a positive charge, they are attracted by the electrostatic adsorption sleeve and adhere to it, thereby further purifying the pellets. The PVC pellets after dust removal treatment move along the inclined surface at the lower end inside the device housing 1 under the action of gravity and finally are discharged from the discharge pipe 9. The stop valve 10 on the discharge pipe 9 can be opened or closed as needed to control the outflow of the pellets, while maintaining the sealing of the device housing 1 to ensure the normal operation of the dust suction fan 5. The dust suction fan 5 extracts the air inside the device housing 1 and fresh air is supplemented from the air inlet at the rear end of the device housing 1. A dust-proof filter screen is provided at the air inlet to prevent external dust from entering the device again, forming a closed air circulation system. The structural design of the device housing 1 is convenient for maintenance. For example, the setting of the dust collection box 19 is convenient for regularly cleaning the accumulated dust, and the detachable sealing cover plate 16 is convenient for cleaning and inspecting the equipment.

[0027] 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 and inventive concept of the present invention, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A dust removal device for producing medical PVC pellets, comprising a device housing (1), a feed pipe (15), an upper annular pipe (2) and a dust collection box (19), characterized in that: The upper end of the device housing (1) is connected to a feed pipe (15), the lower end of the feed pipe (15) is connected to the interior of the device housing (1), the upper end of the feed pipe (15) is detachably mounted with a sealing cover plate (16), the left and right sides of the device housing (1) are symmetrically horizontally welded with support plates (4), the upper end of the support plate (4) is fixedly mounted with a dust collecting box (19), the upper end of the dust collecting box (19) is vertically connected to a connecting pipe (3), the upper end of the connecting pipe (3) is connected to the interior of the upper annular tube (2), the upper annular tube (2) is arranged around the upper side of the device housing (1), and the upper annular tube (2) is connected to a side of the device housing (1) A plurality of dust suction pipes (17), one end of each of the dust suction pipes (17) being arranged inside the device housing (1), one end of each of the dust suction pipes (17) being provided with a dust suction port (18) inside the device housing (1), the lower end of each of the dust collecting boxes (19) being connected to a same connecting pipe (3), the lower end of each of the connecting pipes (3) passing through a supporting plate (4) and being connected to a lower annular pipe (6), the lower annular pipe (6) being arranged around the lower side of the device housing (1), the side of each of the lower annular pipes (6) close to the device housing (1) being connected to a dust suction pipe (17), one end of each of the dust suction pipes (17) extending into the device housing (1), one end of each of the dust suction pipes (17) being provided with a dust suction port (18) inside the device housing (1).

2. A dust removal device for producing medical PVC granules according to claim 1, characterized in that: A stirring motor (11) is installed at the center of the upper end of the device housing (1); a stirring shaft (12) is connected to the lower output end of the stirring motor (11); the lower end of the stirring shaft (12) penetrates the upper end wall of the device housing (1); and a plurality of mounting rods (13) are integrally formed on the side of the stirring shaft (12).

3. A dust removal device for producing medical PVC pellets according to claim 2, characterized in that: An electrostatic adsorption sleeve (14) is sleeved and installed on the side surface of the installation rod (13), and an electrostatic generator is matchedly arranged on the side surface of the upper end of the stirring shaft (12).

4. A dust removal device for producing medical PVC granules according to claim 1, characterized in that: Support columns (7) are vertically welded on the left and right sides of the lower end of the device housing (1), and a discharge pipe (9) is connected to the central position of the lower end of the device housing (1), and a stop valve (10) is installed on the discharge pipe (9).

5. A dust removal device for producing medical PVC granules according to claim 1, characterized in that: The connecting pipe (3) is sealed with the dust collecting box (19), a dust suction fan (5) is installed on the side of the dust collecting box (19), and a filter is installed at the contact position between the dust suction fan (5) and the dust collecting box (19).

6. A dust removal device for producing medical PVC granules according to claim 1, characterized in that: A controller (8) is installed at the front end of the device housing (1).

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