Novel screening instrument
By using magnetic suction on the screening device to fix multiple screening mechanisms with different apertures and convenient operation through the fixing mechanism, the problem that existing screening devices cannot screen multiple particle size raw materials at the same time is solved, and efficient multi-stage screening and convenient operation process are achieved.
Patent Information
- Application Number
- CN202421716049.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-19
AI Technical Summary
The existing screening instruments can only use one pore size screen at a time, and cannot screen raw materials of multiple particle sizes at the same time, resulting in staff needing to replace the screen multiple times, which increases the difficulty of work and the inefficiency of screening.
Multiple screen mechanisms with different screen hole diameters are fixed on the rotating plate by magnetic suction, and the screen mechanism is conveniently pressed or loosened by the fixing mechanism to realize multi-stage screening.
Multi-stage screening of raw materials of different particle sizes is realized, the work flow is simplified, the screening efficiency is improved, and the staff is brought convenience.
Smart Images
Figure CN222970259U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of auxiliary equipment for laboratories, in particular to a novel screening instrument. Background Art
[0002] A screening instrument for laboratories is a device used to screen experimental and test substances, etc. Its main structure includes a screen mechanism (also known as a screening mechanism) and a motor, etc. During operation, the motor drives the raw materials in the screen mechanism to perform a screening movement, thereby separating raw materials with different particle sizes and providing raw materials with appropriate particle sizes for subsequent experiments, inspections, etc.
[0003] Although the existing screening instruments meet the screening needs of raw materials to a certain extent, due to structural limitations, there are still some drawbacks that need to be improved urgently. Specifically, the current screening instruments can only screen raw materials through a screen mechanism with a single pore size screen at a time and do not have the function of screening raw materials with multiple particle sizes simultaneously. That is to say, if different particle size raw materials need to be screened, then the screen mechanisms with different pore size screens need to be replaced and installed on the equipment multiple times to screen the raw materials. In this way, it not only brings inconvenience to the staff, but also is not conducive to improving the screening work efficiency. In summary, it is particularly necessary to provide a device that can screen raw materials with multiple particle sizes synchronously according to needs. Summary of the Utility Model
[0004] In order to overcome the drawbacks described in the background art due to structural limitations of the existing screening equipment, the utility model provides a novel screening instrument in which, under the combined action of relevant mechanisms, the staff can vertically fix multiple screen mechanisms with different screen pore sizes on the rotating disk by magnetic attraction, and can conveniently press or loosen the multiple screen mechanisms, and can perform multi-stage screening on raw materials with different particle sizes at one time, which brings convenience to the staff and correspondingly improves the screening work efficiency.
[0005] The technical solution adopted by the utility model to solve its technical problems is:
[0006] New type of screening instrument, including a screening mechanism, a motor reduction mechanism, a time control switch, a lower housing, a rotating disk, and a cover plate. It is characterized in that it also has a sliding power supply mechanism, a fixing mechanism, and a supporting rotation mechanism; the motor reduction mechanism is installed inside the lower housing, and the lower end of the rotating disk is installed at the upper end of the rotating shaft of the motor reduction mechanism; there are multiple sets of the supporting rotation mechanism, and each set of the supporting rotation mechanism includes a bearing and a supporting rod. The lower end of the supporting rod is rotatably installed together with the bearing, and the upper ends of the supporting rods of multiple sets of the supporting rotation mechanism are respectively installed at intervals on the lower end of the rotating disk; an upper magnet sheet is installed at the upper end of the rotating disk. There are multiple sets of the screening mechanism, and a magnet sheet A is respectively installed at the lower end and the upper end of each set of the screening mechanism. An upper magnet sheet is installed at the lower end of the cover plate; the sliding power supply mechanism includes an insulating sleeve, a metal slip ring, and a metal contact piece. The insulating sleeve is installed outside the rotating shaft, and at least two slip rings are respectively installed at intervals on the outer side end of the insulating sleeve. An insulating seat is installed on one side of the upper part of the lower housing. One side of the two contact pieces is respectively installed on one side of the fixing seat, and the other side of the two contact pieces is respectively in sliding contact and electrical conduction with the outer sides of the two slip rings; the fixing mechanism is installed on both sides of the rotating disk. Multiple sets of the screening mechanism are arranged on the rotating disk from bottom to top. The cover plate is arranged on the uppermost set of the screening mechanism. The time control switch is installed in the component box outside the lower housing, and the power output end of the time control switch is electrically connected to the power input end of the motor reduction mechanism.
[0007] Further, among the multiple sets of the screening mechanism, the lower end of one set of the screening mechanism is a closed structure, and the screen hole diameters of the screens of the other multiple sets of the screening mechanism are inconsistent. Between every two adjacent sets of the screening mechanism from top to bottom, the screen hole diameter of the screen of the upper set of the screening mechanism is larger than the screen hole diameter of the screen of the lower set of the screening mechanism.
[0008] Further, the lower ends of the bearings of the multiple sets of the supporting rotation mechanism are in rotational contact with the outer side of the upper end of the lower housing.
[0009] Further, the polarity of the lower magnet sheet A of the multiple sets of the screening mechanism is opposite to the polarity of the upper end of the lower magnet, and the polarity of the upper magnet sheet A is opposite to the polarity of the lower end of the upper magnet. Between every two adjacent sets of the screening mechanism, the polarity of the lower magnet sheet A of the upper set of the screening mechanism is opposite to the polarity of the upper magnet sheet A of the lower set of the screening mechanism.
[0010] Further, the outer diameters of the lower magnet sheet, the upper magnet sheet, the cover plate, and the magnet sheet A are the same, and the inner diameters of the magnet sheet A and the upper ends of the multiple sets of the screening mechanism are the same.
[0011] Further, the fixing mechanism includes an electric push rod, a lead screw, a limiting plate, and a fixing nut. The power input end of the electric push rod is respectively electrically connected to the two slip rings. The lower ends of the electric push rod and the lead screw are respectively installed on both sides of the rotating disk. One end of the limiting plate is rotatably installed at the upper end of the electric push rod. There is an opening on the other side of the limiting plate. The opening of the limiting plate is sleeved outside the lead screw, and the fixing nut is installed on the upper end of the lead screw through threads.
[0012] The beneficial effects of the present utility model are as follows: The present novelty can vertically fix multiple screen mechanisms with different screen aperture diameters on the rotating disk by means of magnetic attraction, and can conveniently press or release the multiple screen mechanisms through the fixing mechanism. Under the action of the time control switch, the motor reduction mechanism can perform multi-stage screening on raw materials with different particle sizes at one time. In this way, it brings convenience to the staff and correspondingly improves the screening work efficiency. Based on the above, the present novelty has good application prospects. Brief Description of the Drawings
[0013] The present utility model will be further described below in conjunction with the drawings and embodiments.
[0014] Figure 1 It is a schematic diagram of the overall structure of the present utility model.
[0015] Figure 2 It is an enlarged schematic diagram of the partial structure of the present utility model.
[0016] Figure 3 It is the circuit diagram of the present utility model. Detailed Embodiments
[0017] Figure 1 、 2, as shown in Figures 2 and 3, the new type of sieve includes a screening mechanism 1 with an open upper end and a sieve mesh at the lower end, a motor reduction mechanism M1, time control switches E2 and E3, a power supply module E1, a power switch S1, a lower housing 2, a rotating disk 3, a cover plate 4, and also has a sliding power supply mechanism, a fixing mechanism, and a supporting and rotating mechanism 5; there is an opening 21 in the middle of the upper end of the circular lower housing 2, the motor reduction mechanism M1 is vertically installed at the lower end inside the lower housing 2 through bolts, and its rotating shaft is led out downward from the inside of the opening 21 to the outside of the upper end of the lower housing (the inner diameter of the opening 21 is larger than the outer diameter of the rotating shaft), and the middle of the lower end of the circular rotating disk 3 (at a spaced distance from the upper end of the lower housing) is welded to the upper end of the rotating shaft; there are three sets of the supporting and rotating mechanism 5, and each set of the supporting and rotating mechanism (for the rotating support and guidance of multiple sets of screening mechanisms) includes a bearing 51 and a support rod 52. A shaft rod is longitudinally welded to the outer side of the lower end of the support rod 52, and the inner ring of the bearing 51 is tightly sleeved on the outer end of the shaft rod. The upper ends of the three support rods 52 are annularly distributed at spaced distances and are respectively vertically welded to the outer side of the lower end of the rotating disk 3; a circular lower permanent magnet sheet 6 is adhesively bonded to the middle of the upper end of the rotating disk. There are multiple sets of screening mechanisms, and an annular permanent magnet sheet A7 is adhesively bonded to the outside of the lower end and the upper end of each set of screening mechanisms respectively. An annular upper permanent magnet sheet 8 is adhesively bonded to the lower end of the circular cover plate; the sliding power supply mechanism includes an insulating rubber sleeve 91, a copper metal slip ring 92, and a copper contact piece 93. The sleeve 91 is tightly sleeved on the rotating shaft at the upper end position of the opening 21 in the lower housing. The inner sides of the two slip rings 92 are tightly sleeved on the outer ends of the sleeve 91 at spaced distances up and down. The wires connected to the inner sides of the two slip rings 92 are led upward through the wire groove 94 vertically distributed at the left outer end of the sleeve 91 and are led out from the opening at the left end of the rotating disk 3 to the upper left of the rotating disk 3 (the corresponding parts of the wires are adhesively bonded to the outer side of the rotating shaft and the lower left end of the rotating disk). An insulating fixing seat 95 is adhesively bonded to the right end of the opening in the upper part of the lower housing. The two contact pieces 93 are horizontally distributed up and down, and the right sides are adhesively bonded to the outer side of the front end of the fixing seat 95 respectively. The inner sides of the left ends of the two contact pieces 93 are respectively in sliding contact and electrical conduction with the front outer sides of the two slip rings 92; the fixing mechanism is installed on both sides of the rotating disk 3, multiple sets of screening mechanisms 1 are installed on the middle of the rotating disk 3 from bottom to top, the cover plate 4 is installed on the uppermost set of screening mechanisms 1, the time control switches E2 and E3, the power supply module E1, and the power switch S1 are installed on the circuit board in the component box 10, and the component box 10 is installed on the front outer side of the lower housing 2.
[0018] Figure 1 , 2As shown in Figures 2 and 3, among multiple sets of screening mechanisms 1, the lower end of one set of screening mechanism 1 does not have sieve holes and is a closed structure. The sieve hole diameters of the sieves 101 of the other multiple sets of screening mechanisms 1 are inconsistent. Between every two adjacent sets of screening mechanisms up and down, the sieve hole diameter of the sieve 101 of the upper set of screening mechanism 1 is larger than that of the sieve 101 of the lower set of screening mechanism 1. The lower ends of the bearings 51 of multiple sets of supporting and rotating mechanisms rotate and contact the outer side of the upper end of the lower housing 2. The polarities of the lower magnet sheets A7 at the lower ends of multiple sets of screening mechanisms are opposite to the polarities of the upper ends of the lower magnets 6, and the polarities of the upper magnet sheets A7 are opposite to the polarities of the lower ends of the upper magnets 8. Between every two sets of screening mechanisms, the polarities of the lower magnet sheets A7 at the lower ends of the upper set of screening mechanisms are opposite to the polarities of the upper magnet sheets A7 at the upper ends of the lower set of screening mechanisms. The outer diameters of the lower magnet sheets 6, the upper magnet sheets 8, the cover plate, multiple sets of screening mechanisms 1, and the magnet sheets A7 are the same. The inner diameter of the magnet sheet A7 is the same as the inner diameter of the upper ends of multiple sets of screening mechanisms 1. The handle rings 41 are welded to both sides of the upper end of the cover plate 4 (to facilitate the staff to remove the cover plate 4). The fixing mechanism includes an electric push rod M2, a bearing seat 11, a lead screw 12, a limit plate 13, and a manual nut 14. The two power input ends of the electric push rod M2 are respectively connected to the wires connected to two slip ring circles 92 through wires. The cylinder body of the electric push rod M2 and the lower end of the lead screw 12 are respectively vertically welded to the left end and the middle of the right end of the rotating disk 3. The outer middle part of the lower end of the bearing seat 11 is welded to the upper end of the push column of the electric push rod M2. A shaft rod A is vertically welded to the lower middle part of the left side end of the limit plate 13. The lower end of the shaft rod A is tightly sleeved in the inner ring of the bearing of the bearing seat 11. There is an opening in the middle of the right side of the limit plate 13. The opening on the right side of the limit plate 13 is sleeved on the outer side of the upper end of the lead screw 12. The manual nut 14 is screwed and installed on the upper end of the lead screw 12. A top block 15 with a height higher than the height of the handle ring is welded to the lower end of the limit plate. The power input terminals 1 and 2 of the power module E1 are respectively connected to the two poles of the AC 220V power supply through wires. The power output terminals 3 and 4 of the power module E1 and the power input terminals 1 and 2 of the power switch S1 are respectively connected to each other through wires. The power output terminals 3, 4, 5, and 6 of the power switch S1 and the right side ends of two contact pieces 93 are respectively connected to each other through wires. The power input terminals 1 and 2 of the time control switches E2 and E3 are connected in series with the power switch S2 and the power output terminals 3 and 4 of the power module E1 respectively through wires. The power output terminals 3 and 4 of the time control switches E2 and E3 and the positive and negative and negative and positive power input terminals of the motor reduction mechanism M1 are respectively connected to each other through wires. All the handles of the power switches are located outside the openings at the front end of the component box.
[0019] Figure 1 、 2As shown in Figure 3, after the AC 220V power supply enters the power input terminal of the power module E1, the power output terminal of the power module E1 outputs a stable DC 24V power supply which enters the power input terminals 1 and 2 of the power switches S1 and S2. Before using the present invention, the staff selects different numbers of screening mechanisms 1 for screening operations according to the needs of raw material screening. Specifically, the lower end of the screening mechanism 1 without screen holes is attracted to the lower magnet 6 via the magnet sheet A, and then the multiple screening mechanisms are attracted together via the magnet sheet A (between each upper and lower adjacent screening mechanisms, the screen mesh 101 of the upper screening mechanism 1 has a screen mesh 101 larger than the screen mesh 101 of the lower screening mechanism 1), the lowermost set of multiple screening mechanisms 1 and the upper end of the screening mechanism 1 without screen holes are attracted together via the magnet sheet A, and the magnet sheet A of the uppermost set of screening mechanism 1 and the upper magnet 8 of the cover plate 4 are attracted together (the screened raw materials are pre-placed in the uppermost set of screening mechanisms); after the multiple screening mechanisms 1 and the cover plate are installed in place, they are in a vertical concentric structure from top to bottom. Then the staff member manually rotates the limit plate 13 clockwise so that the opening of the limit plate 13 is aligned with the upper end of the screw rod 12, and then the staff member turns the handle of the power switch S1 to the left, and the 1, 2 feet and 3, 4 feet of the power switch S1 are connected respectively. The 24V power supply is supplied to the positive and negative power input ends of the electric push rod M2 through the power switch, two contact pieces 93, and two slip rings 92. The push column of the electric push rod M2 drives the limit plate 13 downward. When the lower end of the top block 15 contacts the upper end of the cover plate 4, the power switch S1 is turned off. At this moment, the opening on the right side of the limit plate 13 is sleeved on the outer side of the upper end of the screw rod 12, and the staff member screws the manual nut 14 into the upper end of the screw rod 12 to fix multiple sets of screening mechanisms together. Since the electric push rod M2 is powered by the contact piece 93 and the slip ring 92, when the screening mechanism rotates later, the contact piece and the slip ring can still be in contact (the outer side of the slip ring rotates along the inner side of the contact piece), ensuring the power supply needs of the electric push rod M2 (and not affecting the rotation of the screening mechanism). After turning on the power switch S2, the time control switches E2 and E3 are powered on, and the 3rd and 4th pins of the time control switches E2 and E3 output power for 5 seconds in a cycle (the time is adjustable, and the following cycle mode is used, the time control switch E2 first outputs power for 5 seconds, and then the 3rd and 4th pins of the time control switch E3 output power for 5 seconds) to enter the positive and negative and negative and positive and negative power input terminals of the motor reduction mechanism M1. After the positive and negative power input terminals of the motor reduction mechanism M1 are energized, its rotating shaft drives the multiple screening mechanisms 1 to rotate clockwise for about 3 circles via the rotating disk (the bearing rotates along the upper end of the lower shell to play a supporting and guiding role). After the negative and positive power input terminals of the motor reduction mechanism M1 are energized, its rotating shaft drives the multiple screening mechanisms 1 to rotate counterclockwise for about 3 circles via the rotating disk. In this way, the multiple screening mechanisms can achieve the effect of screening raw materials due to the back and forth rotation.After turning off the power switch S2, the entire screening process is completed (generally screening takes about 3 minutes); after screening, the raw materials with the smallest particle size fall into the bottom set of screening mechanisms, and the particle size of the raw materials screened inside the screening mechanisms gradually changes from small to large from bottom to top. After the screening is completed, the staff unscrews the manual nut 14 from the screw rod 12, and then the staff turns the handle of the power switch S1 to the right, and the 1, 2 and 5, 6 pins of the power switch S1 are connected respectively. The 24V power supply is supplied to the negative and positive power input terminals of the electric push rod M2 through the power switch, two contact pieces 93, and two slip rings 92. The push column of the electric push rod M2 drives the limit plate 13 upward. When the right opening of the limit plate 13 is located outside the upper end of the screw rod 12, the staff turns off the power switch. Then, the staff manually rotates the limit plate 13 counterclockwise so that the limit plate is located on the left outside of multiple sets of screening mechanisms. The staff can easily remove multiple sets of screening mechanisms and cover plates to complete the entire operation process (removing multiple sets of screening mechanisms separately will obtain raw materials of different particle sizes). This new type brings convenience to the staff and correspondingly improves the work efficiency of screening.
[0020] Figure 3 Among them, the power module E1 is a finished product of an AC 220V to DC 24V switching power module; the electric push rod M2 is a finished product of a reciprocating electric telescopic rod with a power of 20W; the motor reduction mechanism M1 is a finished product of a coaxial motor gear reducer with a power of 360W (speed of 36 revolutions per minute); the time control switches E2 and E3 are finished products of microcomputer time control switches of model KG316T, which have two power input terminals, two power output terminals, and seven setting buttons. The time for the two power output terminals to output power can be set by operating the seven buttons respectively.
[0021] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended that all changes that fall within the meaning and scope of the equivalent elements of the claims are included in the utility model.
[0022] In addition, it should be understood that although the present specification is described according to the implementation mode, the implementation mode does not only include an independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A novel screening device, comprising a screening mechanism, a motor reduction mechanism, a time control switch, a lower housing, a rotating disk, and a cover plate, characterized in that: It also has a sliding power supply mechanism, a fixing mechanism, and a supporting rotation mechanism; the motor reduction mechanism is installed in the lower shell, and the lower end of the rotating disk is installed on the upper end of the rotating shaft of the motor reduction mechanism; the supporting rotation mechanism has multiple sets, each set of supporting rotation mechanism includes a bearing and a support rod, the lower end of the support rod and the bearing are rotatably installed together, and the upper ends of the support rods of the multiple sets of supporting rotation mechanisms are respectively installed at the lower end of the rotating disk at a distance; the upper end of the rotating disk is installed with a lower magnet sheet, and the screening mechanism has multiple sets, and the lower and upper ends of each set of screening mechanism are respectively installed with magnet sheets A, and the lower end of the cover plate is installed with an upper magnet sheet; the sliding power supply mechanism includes an insulating sleeve , metal slip rings, metal contact pieces, an insulating sleeve is installed on the outside of the rotating shaft, at least two slip rings are installed on the outer ends of the insulating sleeves at an upper and lower interval, an insulating seat is installed on one side of the upper part of the lower shell, one side of the two contact pieces are respectively installed on one side of the fixed seat, and the other sides of the two contact pieces are respectively in sliding contact with the outer sides of the two slip rings for electrical conduction; the fixing mechanism is installed on both sides of the rotating disk, multiple sets of screening mechanisms are arranged on the rotating disk from bottom to top, the cover plate is arranged on the uppermost set of screening mechanisms, the time control switch is installed in the component box outside the lower shell, and the power output end of the time control switch is electrically connected to the power input end of the motor reduction mechanism.
2. The novel sieving apparatus according to claim 1, characterized in that: Among the multiple screening mechanisms, the lower end of one of the screening mechanisms is a closed structure, and the sieve hole diameters of the sieves of the other multiple screening mechanisms are inconsistent. Between each upper and lower adjacent screening mechanisms, the sieve hole diameter of the sieve of the upper screening mechanism is larger than the sieve hole diameter of the sieve of the lower screening mechanism.
3. The novel sieving apparatus according to claim 1 is characterized in that: The lower ends of the bearings supporting the rotating mechanism rotate and contact with the outer side of the upper end of the lower shell.
4. The novel sieving apparatus according to claim 1, characterized in that: The polarity of the lower end magnet piece A of multiple sets of screening mechanisms is opposite to the polarity of the upper end of the lower magnet, and the polarity of the upper end magnet piece A is opposite to the polarity of the lower end of the upper magnet. Between each two adjacent sets of screening mechanisms, the polarity of the lower end magnet piece A of the upper set of screening mechanisms is opposite to the polarity of the upper end magnet piece A of the lower set of screening mechanisms.
5. The novel sieving apparatus according to claim 1 is characterized in that: The outer diameters of the lower magnet sheet, the upper magnet sheet, the cover plate and the magnet sheet A are consistent, and the inner diameters of the magnet sheet A and the upper ends of the multiple screening mechanisms are consistent.
6. The novel sieving apparatus according to claim 1, characterized in that: The fixing mechanism includes an electric push rod, a lead screw, a limit plate, and a fixing nut. The power input end of the electric push rod is electrically connected to the two slip rings. The lower ends of the electric push rod and the lead screw are respectively installed on both sides of the rotating disk. One end of the limit plate is rotatably installed on the upper end of the electric push rod. The other side of the limit plate has an opening. The opening of the limit plate is sleeved on the outside of the lead screw, and the fixing nut is threadedly installed on the upper end of the lead screw.