Medical polyvinyl chloride particle multi-stage screening equipment

Abstract

The utility model relates to the technical field of polyvinyl chloride plastic processing equipment, and discloses medical polyvinyl chloride particle multistage screening equipment which comprises a screening box, a feeding port is fixedly connected to the top of the screening box, a discharging port is formed in one side of the screening box, and a screen assembly is arranged in the screening box. The medical polyvinyl chloride particle multi-stage screening equipment is provided with a fixing frame, a fixing seat, a fixing spring, a sliding block, an inclined plate, a mounting groove, a screen frame, a screw rod, a cushion block, a nut, a first screen, a second screen and a third screen; according to the multi-stage screening device for the polyvinyl chloride particles, the first screen, the second screen and the third screen can conduct multi-stage screening on the polyvinyl chloride particles conveniently, the particles of four sizes can be screened out, the requirements of people are met, the first screen is easy to mount and dismount, and follow-up maintenance and replacement by people are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of polyvinyl chloride plastic processing equipment, in particular to a multi-stage screening device for medical polyvinyl chloride particles. Background Art

[0002] Polyvinyl chloride plastic is used in medical consumables. Polyvinyl chloride plastic is made by polymerizing vinyl chloride monomer and is one of the commonly used thermoplastics. Screening devices are required during the production and processing of polyvinyl chloride plastic particles to ensure product quality.

[0003] The prior art patent document with publication number CN208162051U provides a polyvinyl chloride plastic particle screening device for medical consumables, in which polyvinyl chloride plastic particles are placed into the machine body through the feed port, and the auxiliary motor is used to rotate the rotating shaft, thereby driving the eccentric wheel to rotate. When the long-diameter arc segment of the eccentric wheel rotates to contact the surface of the bottom of the connecting rod, the movable rod is pushed to move upward, so that the movable rod can push the auxiliary screening net on one side of the connecting plate to move upward. When the short-diameter arc segment of the eccentric wheel rotates to contact the surface of the bottom of the connecting rod, the movable rod pushes the auxiliary screening net on one side of the connecting plate to move downward, thereby realizing vibration screening of the plastic particles on the auxiliary screening net, thereby achieving the purpose of good screening effect.

[0004] Although the above-mentioned existing technology can screen polyvinyl chloride plastic particles, it can only separate polyvinyl chloride plastic particles of two sizes during screening, and cannot perform multi-stage screening. It cannot screen polyvinyl chloride plastic particles into four sizes of large, medium, small and smaller particles, which cannot meet people's needs. Therefore, we need a multi-stage screening equipment for medical polyvinyl chloride particles. Utility Model Content

[0005] The purpose of the utility model is to provide a multi-stage screening device for medical polyvinyl chloride particles to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the utility model provides the following technical solutions: a multi-stage screening device for medical polyvinyl chloride particles, comprising a screening box, a feed port fixedly connected to the top of the screening box, a discharge port opened on one side of the screening box, a screen assembly provided inside the screening box, and a dust collection assembly provided on one side of the screening box;

[0007] The screen assembly includes a fixing frame, and the outer wall of the fixing frame is fixedly connected to a fixing seat, the inner wall of the fixing seat is fixedly connected to a fixing spring, and the inner wall of the fixing seat is slidably connected to a slider, one end of the slider is fixedly connected to an inclined plate, and the inner wall of the inclined plate is provided with a mounting groove, the inner wall of the mounting groove is detachably connected to the screen frame, and the outer wall of the screen frame is fixedly connected to a screw, the outer wall of the screw is slidably connected to a pad, and the outer wall of the screw is threadedly connected to a nut, the inner wall of the screw is fixedly connected to a first screen, and a second screen is provided below the first screen, and a third screen is provided below the second screen;

[0008] The dust suction assembly includes an installation box, and a dust suction fan is installed on the inner wall of the installation box, the inner wall of the installation box is detachably connected to a filter screen, and the bottom of the installation box is fixedly connected to a fixed pipe, the outer wall of the fixed pipe is fixedly connected to a dust suction port, and the inner wall of the dust suction port is provided with a fixed net, the inner wall of the installation box is provided with a slot, and the inner wall of the slot is slidably connected to a collection box.

[0009] Preferably, a reduction motor is installed on one side of the screening box, and the output shaft of the reduction motor is fixedly connected to a rotating rod through a coupling, one end of the rotating rod is fixedly connected to a cam, and the inner wall of the screening box is fixedly connected to a lower hopper.

[0010] Preferably, the fixing seat forms an elastic structure with the slider through a fixing spring, and one end of the fixing spring is fixed on the slider.

[0011] Preferably, the shape and size of the inner wall of the installation groove match the shape and size of the outer wall of the screen frame, and the inner wall of the installation groove fits the outer wall of the screen frame.

[0012] Preferably, there are multiple screw rods, and one end of the screw rod passes through the inclined plate and the spacer to be connected to the nut.

[0013] Preferably, there are multiple dust suction ports, and the multiple dust suction ports are arranged at equal distances on the fixed pipe.

[0014] Preferably, the installation box forms a sliding structure with the collection box through a slot, and one end of the collection box extends into the slot for connection.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0016] First, the utility model is provided with a fixing frame, a fixing seat, a fixing spring, a slider, an inclined plate, a mounting groove, a screen frame, a screw, a pad, a nut, a first screen, a second screen and a third screen. Through the operation of multiple reduction motors, the cam rotates and continuously hits the screen to make it vibrate, which is convenient for the first screen, the second screen and the third screen to perform multi-stage screening of polyvinyl chloride particles, and can screen out particles of four sizes, meeting people's needs. The installation and disassembly of the first screen are simple, which is convenient for people's subsequent maintenance and replacement.

[0017] Second, the utility model is provided with an installation box, a dust suction fan, a filter, a fixed pipe, a dust suction port, a fixed net, a slot and a collection box. The three dust suction ports correspond to the three screens near the discharge port. The dust suction fan works and the dust generated during the screening of polyvinyl chloride particles is sucked through the three dust suction ports. The dust and impurities sucked can be collected by providing a collection box. The structure is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the structure of the screening box and the first screen of the utility model;

[0020] Figure 3 For this utility model Figure 2 A in the middle is an enlarged structural diagram;

[0021] Figure 4 For this utility model Figure 2 The enlarged structural diagram at B in the middle;

[0022] Figure 5 This is a schematic diagram of the structure of the dust suction port and the fixed pipe of the utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the installation box and the dust suction fan of the utility model.

[0024] Among them: 1. Screening box; 2. Feed port; 3. Discharge port; 4. Screen assembly; 401. Fixed frame; 402. Fixed seat; 403. Fixed spring; 404. Slider; 405. Inclined plate; 406. Mounting slot; 407. Screen frame; 408. Screw; 409. Spacer; 410. Nut; 411. First screen; 412. Second screen; 413. Third screen; 5. Dust collection assembly; 501. Mounting box; 502. Dust collection fan; 503. Filter; 504. Fixed pipe; 505. Dust collection port; 506. Fixed net; 507. Slot; 508. Collection box; 6. Reducer motor; 7. Rotating rod; 8. Cam; 9. Lower hopper. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] See also Figure 1-6 As shown, a multi-stage screening device for medical polyvinyl chloride particles includes a screening box 1, a feed port 2 is fixedly connected to the top of the screening box 1, and a discharge port 3 is opened on one side of the screening box 1, a screen assembly 4 is arranged inside the screening box 1, and a dust collection assembly 5 is arranged on one side of the screening box 1; the screen assembly 4 includes a fixed frame 401, and the outer wall of the fixed frame 401 is fixedly connected to a fixed seat 402, the inner wall of the fixed seat 402 is fixedly connected to a fixed spring 403, and the inner wall of the fixed seat 402 is slidably connected to a slider 404, one end of the slider 404 is fixedly connected to an inclined plate 405, and the inner wall of the inclined plate 405 is opened with a mounting groove 406, the inner wall of the mounting groove 406 is detachably connected to a screen frame 407, and the outer wall of the screen frame 407 is fixedly connected to a screw 408, the screw 408 The outer wall of the screw 408 is slidably connected to the pad 409, and the outer wall of the screw 408 is threadedly connected to the nut 410, the inner wall of the screen frame 407 is fixedly connected to the first screen 411, and the second screen 412 is arranged below the first screen 411, and the third screen 413 is arranged below the second screen 412; the dust collection component 5 includes an installation box 501, and a dust collection fan 502 is installed on the inner wall of the installation box 501, the inner wall of the installation box 501 is detachably connected to the filter 503, and the bottom of the installation box 501 is fixedly connected to a fixed pipe 504, the outer wall of the fixed pipe 504 is fixedly connected to the dust collection port 505, and the inner wall of the dust collection port 505 is provided with a fixed net 506, the inner wall of the installation box 501 is provided with a slot 507, and the inner wall of the slot 507 is slidably connected to the collection box 508.

[0027] Through the above technical solution, multiple reduction motors 6 are operated to rotate the cam 8 to continuously hit the screen to make it vibrate, so that the first screen 411, the second screen 412 and the third screen 413 can perform multi-stage screening of polyvinyl chloride particles, and can screen out four sizes of particles, meeting people's needs. The installation and disassembly of the first screen 411 are simple, which is convenient for people's subsequent maintenance and replacement. The three dust suction ports 505 correspond to the three screens, and the dust generated during the screening of polyvinyl chloride particles is sucked through the dust suction fan 502. The three dust suction ports 505 are used to suck dust, and the dust and impurities sucked can be collected by providing a collection box 508. The structure is simple and easy to use.

[0028] Specifically, a reduction motor 6 is installed on one side of the screening box 1, and the output shaft of the reduction motor 6 is fixedly connected to a rotating rod 7 through a coupling, one end of the rotating rod 7 is fixedly connected to a cam 8, and the inner wall of the screening box 1 is fixedly connected to a lower hopper 9.

[0029] Through the above technical solution, the number of fixed frames 401 is two in a group, one fixed frame 401 in a group is fixed to the right inner wall of the screening box 1, and the other is fixed to the left inner wall of the screening box 1. The number of sliders 404 is multiple, two in a group are fixed to the right top of the inclined plate 405 and connected to the fixed seat 402, and two in a group are fixed to the left bottom of the inclined plate 405 and connected to the fixed seat 402; the outer wall of the screening box 1 is fixedly connected to the installation box 501; the outer wall of the screening box 1 is fixedly connected to the cover plate by bolts, and the cover plate has a transparent window to facilitate people to see the screening situation; the outer wall of the screening box 1 is provided with a controller; and a container can be used to catch the screened particles.

[0030] Specifically, the fixing seat 402 forms an elastic structure with the slider 404 through the fixing spring 403 , and one end of the fixing spring 403 is fixed on the slider 404 .

[0031] Through the above technical solution, the connection effect between the fixing seat 402, the fixing spring 403 and the slider 404 is strengthened, so that the fixing spring 403 can better play its own effect.

[0032] Specifically, the shape and size of the inner wall of the installation groove 406 match the shape and size of the outer wall of the screen frame 407 , and the inner wall of the installation groove 406 fits the outer wall of the screen frame 407 .

[0033] Through the above technical solution, the connection effect between the installation groove 406 and the screen frame 407 is strengthened, which facilitates the installation of the screen frame 407.

[0034] Specifically, there are multiple screw rods 408 , and one end of the screw rod 408 passes through the inclined plate 405 and the spacer 409 to be connected to the nut 410 .

[0035] Through the above technical solution, a through slot is opened on the inclined plate 405. When installing the screen frame 407, the screw 408 is aligned with the through slot to facilitate positioning and installation, and the screen frame 407 can be quickly assembled to the inclined plate 405. The spacer 409 is installed on the screw 408 and locked with the nut 410 to complete the fixation.

[0036] Specifically, there are multiple dust suction ports 505 , and the multiple dust suction ports 505 are arranged on the fixed pipe 504 at equal distances.

[0037] Through the above technical solution, three dust suction ports 505 can be set, which are set near the discharge port 3, corresponding to the three screens, to facilitate the absorption of dust and impurities. The setting of the fixed net 506 can block the entry of screened particles, while dust and impurities will not be blocked.

[0038] Specifically, the installation box 501 forms a sliding structure with the collection box 508 through the slot 507, and one end of the collection box 508 extends into the slot 507 for connection.

[0039] Through the above technical solution, the connection effect between the installation box 501 and the slot 507 and the collection box 508 is strengthened, which makes it easier to insert the collection box 508 into the slot 507 and collect dust through the collection box 508. When the dust is full, the collection box 508 can be pulled out by the handle. The inner wall of the collection box 508 is provided with a transparent plate, so that people from the outside can clearly see the dust collection situation of the collection box 508.

[0040] When in use, first connect the device to an external power supply, the external power supply supplies power to the device, and the three reduction motors 6 work to drive the rotating rod 7 to rotate, and the rotating rod 7 drives the cam 8 to rotate. The raised end of the cam 8 rotates to lift the inclined plate 405, and the inclined plate 405 drives the slider 404 to move upward, and the upward movement of the slider 404 causes the fixed spring 403 to contract. When the raised end of the cam 8 turns away, the fixed spring 403 rebounds, causing the slider 404 to move downward, and the slider 404 causes the inclined plate 405 to move downward. The cam 8 continuously rotates and hits the inclined plate 405 to vibrate, and the polyvinyl chloride particles to be screened enter the screening box 1 from the feed port 2 and fall onto the first screen 411 for screening. The first screen 411 screens out large particles of polyvinyl chloride particles, and the large polyvinyl chloride particles slide out through the inclined plate 405, and the remaining polyvinyl chloride particles fall onto the second screen 412, and the second screen 412 screens the medium polyvinyl chloride particles. The medium-sized polyvinyl chloride particles slide down through the inclined plate 405 and are discharged, and the remaining polyvinyl chloride particles fall onto the third screen 413. The third screen 413 screens out the small polyvinyl chloride particles, and the small polyvinyl chloride particles slide down through the inclined plate 405 and are discharged. The smaller polyvinyl chloride particles pass through the mesh of the third screen 413 and fall into the discharge hopper 9 for discharge. The dust suction fan 502 works to generate suction, and the dust generated during the screening process is sucked through the three dust suction ports 505, and the dust is sucked into the installation box 501 through the fixed pipe 504. The dust is blocked by the filter 503 and collected by the collection box 508. When the collection box 508 is full, the operator can take out the collection box 508 and process the collected dust. This completes all the work. The content not described in detail in this manual belongs to the existing technology known to professional and technical personnel in this field.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of this application is defined by the appended claims and their equivalents.

Claims

1. A multi-stage screening device for medical polyvinyl chloride particles, comprising a screening box (1), characterized in that: The top of the screening box (1) is fixedly connected to a feed port (2), and a discharge port (3) is provided on one side of the screening box (1); a screen assembly (4) is provided inside the screening box (1), and a dust collection assembly (5) is provided on one side of the screening box (1); The screen assembly (4) comprises a fixing frame (401), wherein the outer wall of the fixing frame (401) is fixedly connected to a fixing seat (402), the inner wall of the fixing seat (402) is fixedly connected to a fixing spring (403), and the inner wall of the fixing seat (402) is slidably connected to a slider (404), one end of the slider (404) is fixedly connected to an inclined plate (405), and the inner wall of the inclined plate (405) is provided with a mounting groove (406), and the inner wall of the mounting groove (406) is detachably connected to the fixing spring (403). A screen frame (407) is provided, and a screw (408) is fixedly connected to the outer wall of the screen frame (407), the outer wall of the screw (408) is slidably connected to a pad (409), and a nut (410) is threadedly connected to the outer wall of the screw (408), a first screen (411) is fixedly connected to the inner wall of the screen frame (407), a second screen (412) is provided below the first screen (411), and a third screen (413) is provided below the second screen (412); The dust collection assembly (5) comprises an installation box (501), and a dust collection fan (502) is installed on the inner wall of the installation box (501), a filter screen (503) is detachably connected to the inner wall of the installation box (501), and a fixed pipe (504) is fixedly connected to the bottom of the installation box (501), the outer wall of the fixed pipe (504) is fixedly connected to a dust collection port (505), and the inner wall of the dust collection port (505) is provided with a fixed net (506), the inner wall of the installation box (501) is provided with a slot (507), and the inner wall of the slot (507) is slidably connected to a collection box (508).

2. The multi-stage screening device for medical polyvinyl chloride particles according to claim 1, characterized in that: A reduction motor (6) is installed on one side of the screening box (1), and the output shaft of the reduction motor (6) is fixedly connected to a rotating rod (7) through a coupling, one end of the rotating rod (7) is fixedly connected to a cam (8), and the inner wall of the screening box (1) is fixedly connected to a lower hopper (9).

3. The multi-stage screening device for medical polyvinyl chloride particles according to claim 1, characterized in that: The fixing seat (402) forms an elastic structure with the slider (404) through the fixing spring (403), and one end of the fixing spring (403) is fixed on the slider (404).

4. The multi-stage screening device for medical polyvinyl chloride particles according to claim 1, characterized in that: The shape and size of the inner wall of the installation groove (406) match the shape and size of the outer wall of the screen frame (407), and the inner wall of the installation groove (406) fits the outer wall of the screen frame (407).

5. The multi-stage screening equipment for medical polyvinyl chloride particles according to claim 1, characterized in that: There are multiple screw rods (408), and one end of the screw rod (408) passes through the inclined plate (405) and the spacer (409) to be connected to the nut (410).

6. The multi-stage screening device for medical polyvinyl chloride particles according to claim 1, characterized in that: There are multiple dust suction ports (505), and the multiple dust suction ports (505) are arranged at equal distances on the fixed pipe (504).

7. The multi-stage screening equipment for medical polyvinyl chloride particles according to claim 1, characterized in that: The installation box (501) forms a sliding structure with the collection box (508) through the slot (507), and one end of the collection box (508) extends into the slot (507) for connection.

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