CN214288775U

CN214288775U - External magnetic filter

Info

Publication number: CN214288775U
Application number: CN202023344683.2U
Authority: CN
Inventors: 申星海; 徐磊
Original assignee: Qingdao Pusen Environmental Protection Technology Co ltd
Current assignee: Qingdao Pusen Environmental Protection Technology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-09-28
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses an external magnetic filter, which comprises a frame, a magnetic component arranged on the frame, a lifting mechanism for driving the magnetic component to move longitudinally, a scraping mechanism for scraping iron powder adsorbed by the magnetic component, and a scum discharging mechanism for collecting and discharging the scraped iron powder; the scraping mechanism is symmetrically installed on two sides of the magnetic assembly and comprises: the scraper is arranged on the horizontal rotating shaft, and the scraper is arranged on the horizontal rotating shaft; a piston rod of the cylinder drives the rack, so that the driving gear rotates forwards or backwards to drive the scraper to open and close relative to the magnetic bar; the scum discharge mechanism comprises a scum discharge groove, a spiral conveying rod and a driving motor, wherein an opening is arranged above the scum discharge groove, and the opening is arranged corresponding to the scraping mechanism. Above-mentioned magnetic filter passes through the cooperation of scraping mechanism and dross discharge mechanism, realizes the high-efficient filtration to the emulsion, to the quick discharge of filter residue, is difficult for the trouble, and is convenient for maintain.

Description

External magnetic filter

Technical Field

The utility model relates to a magnetic filter equipment technical field especially relates to an external magnetic filter.

Background

The magnetic filter is used for recovering iron powder in liquid based on the principle of magnetic adsorption, and is widely applied to various manufacturing industries at present, but the magnetic filter is widely applied to a rolling mill emulsion system. In the cold rolling process, a large amount of fine iron powder (with average particle size of about 1-3 μm) is generated in the repeated rolling and rubbing process of the strip steel and the roller and is gradually accumulated in the emulsion, so that the iron powder is periodically sucked from the emulsion by utilizing the principle of magnetic adsorption in order to ensure the product quality.

According to the application of the magnetic filter in the emulsion system of the rolling mill, the magnetic filter can be divided into an electromagnetic type and a permanent magnet type according to the generation of a magnetic field and the working principle. The principle of the electromagnetic type magnetic filter is that the filler of the filter is electrified to generate magnetism and a magnetic field, so that impurities such as ferrous powder and the like in the filtering liquid are adsorbed, and then the filler is washed under the condition of eliminating magnetism (losing electricity) to remove the adsorbed impurities. The permanent magnetic filter uses high-performance permanent magnet as magnetic source and magnetic bar to form strong magnetic field around it to form "magnetic shed" for adsorbing iron powder and other particles in the emulsion of cold-rolling mill. The equipment comprises dozens to hundreds of permanent magnet magnetic rods, the magnetic rods are connected in series side by side through chains, the rotation of the chains drives the magnetic rods to rotate, the magnetic rods rotate through the emulsion, and media such as iron powder in the emulsion are adsorbed under the action of a magnetic field. The automatic mud scraping device is arranged on the magnetic filter, impurities adsorbed on the magnetic rod are scraped down and fall into the sludge collecting tank, and finally the impurities are transported outside for waste recycling.

At present, a magnetic filter used in domestic cold rolling units mainly comprises an electromagnetic filter and a built-in permanent magnet filter, wherein a magnetic rod of the built-in permanent magnet filter is directly arranged in an emulsion liquid supply main box, and iron powder adsorbed on the magnetic rod is separated through the rotation of a chain type magnetic rod in a circulating box. The built-in type has the obvious problems that the discharging effect of impurities such as separated iron powder is poor, the scraper is easy to break down due to the impurity environment in the emulsion tank, the built-in type structure can only stop the scraper and empty the emulsion, the normal operation of a production line is greatly influenced, and the maintenance cost is high. Due to the reasons, the built-in company filter has too many fault points and cannot stably run for a long time.

Therefore, the prior art has yet to be developed.

SUMMERY OF THE UTILITY MODEL

To the technical problem, the utility model provides an external magnetic filter, magnetic filter sets up in emulsion pond top, not only can filter the emulsion high-efficiently, carries out quick discharge to the filter residue to difficult trouble, the maintenance is convenient.

The utility model provides a following technical scheme:

an external magnetic filter comprises a rack, a magnetic assembly arranged on the rack, a lifting mechanism for driving the magnetic assembly to move longitudinally, a scraping mechanism for scraping iron powder adsorbed by the magnetic assembly, and a scum discharging mechanism for collecting and discharging the scraped iron powder;

the scraping mechanism is symmetrically installed on two sides of the magnetic assembly and comprises: the scraper is fixedly arranged on the outer edge of the horizontal rotating shaft and matched with the surface of a longitudinally arranged magnetic bar, a gear fixedly arranged at one end of the horizontal rotating shaft, which extends out of a shell of the device, a longitudinally arranged air cylinder fixedly arranged on the outer side surface of the shell and a vertically arranged rack connected to a piston rod of the air cylinder are fixedly arranged, and the rack is meshed with the gear; a piston rod of the air cylinder drives the rack to lift up and down, so that the drive gear rotates forwards or reversely, the scraper is driven to open and close relative to the magnetic rod, and the scraper can scrape impurities adsorbed on the magnetic rod;

the scum discharging mechanism is positioned below the scraping mechanism and comprises a long tubular scum discharging groove, a spiral conveying rod arranged along the central shaft of the scum discharging groove and a driving motor in transmission connection with the spiral conveying rod, an opening is arranged above the scum discharging groove, the opening is arranged corresponding to the scraping mechanism, and two ends of the spiral conveying rod are connected with two end plates of the scum discharging groove through bearings;

the non-end part of the horizontal rotating shaft of the scraping mechanism is fixedly connected with the top side edge of the scum discharge groove through a fixed seat.

Preferably, in the magnetic filter, the upper portion of the fixing base is an annular connecting portion through which the horizontal rotating shaft passes, the lower portion of the fixing base is a connecting pin which is in threaded connection with the side of the scum discharge groove, and the bottom of the scraper is provided with a clearance groove corresponding to the annular connecting portion of the fixing base.

Preferably, two sides of the rack are respectively symmetrically provided with tooth surfaces which are respectively meshed with the left gear and the right gear, and one air cylinder drives the scrapers on the left side and the right side to move reversely; or one side of the rack is provided with a tooth surface meshed with the gear, and one air cylinder drives one scraper to move.

Preferably, the scraper is composed of one or a plurality of scraper units which are closely arranged front and back, the outer edge of the top side of the scraper is in a tooth shape matched with the surface of the magnetic bar, and the bottom side of the scraper is provided with a first connecting hole connected with the horizontal rotating shaft.

Preferably, the scraper comprises an outer main blade and an inner reinforcing blade which are attached to each other, the bottoms of the main blade and the reinforcing blade are fixedly connected with the horizontal rotating shaft through a square connecting block, and a second connecting hole for the horizontal rotating shaft to penetrate through is formed in the middle of the square connecting block;

the position that corresponds the first connecting hole of scraper on the square connecting block sets up the third connecting hole, through the cooperation of fastener simultaneously with first connecting hole, third connecting hole, realizes the fixed connection of scraper and horizontal rotation axle.

Preferably, the upper part and the lower part of the movement stroke of the rack are respectively provided with a first position switch and a second position switch.

Preferably, the magnetic filter is further provided with a scum chute, and an inlet at the upper end of the scum chute is communicated with a drain outlet arranged at the bottom surface of the outer end of the scum discharge groove.

Preferably, the drive motor is synchronously connected to a plurality of driven wheels of a row of dross discharge chutes arranged in parallel via a drive belt or chain.

The utility model provides an external magnetic filter has following beneficial effect:

1. the scraping mechanism in the external magnetic filter drives the rack which is longitudinally arranged to ascend and descend through the piston rod of the external air cylinder, so that the gear which is meshed with the scraping mechanism is driven to rotate forwards or backwards, the scraper is driven to move in an opening and closing mode relative to the magnetic rod, and the scraping of impurities adsorbed on the magnetic rod by the scraper is achieved. The scraping mechanism is simple in structure, high in working efficiency, compact in structure, convenient to use and convenient to install and maintain.

2. Magnetic filter adopts and scrapes mechanism matched with dross discharge mechanism, utilizes the crowded mechanism of spiral, and iron fillings and dross that scrape down with scraping mechanism are collected and are forced the discharge, and it is thorough inadequately to have avoided the easy impurity that appears of setting up of spout structure before to excrete, the problem of iron fillings and dross accumulation and sclerosis appears, effectively avoids the iron fillings that clear away that leads to because iron fillings block the pipeline to flow in the phenomenon of emulsified oil again.

Above-mentioned external magnetic filter sets up in emulsion pond top independently, through scraping mechanism and dross discharge mechanism's cooperation, not only can filter the emulsion high-efficiently, discharges fast the filter residue to difficult trouble, the maintenance is convenient.

Drawings

FIG. 1 is a schematic side view of an external magnetic filter in a use state;

FIG. 2 is a schematic front view of an external magnetic filter in use;

FIG. 3 is a sectional view showing the internal structure of the external magnetic filter of the present invention;

FIG. 4 is an enlarged view of the structure of the scraping mechanism at the right side of the magnetic filter of the present invention;

FIG. 5 is a side view of the magnetic filter of the present invention; the left part of the figure is a schematic internal structure;

FIG. 6 is an enlarged view of the right side portion of the portion of FIG. 5;

FIG. 7 is a schematic plan view of the doctor blade;

FIG. 8 is a side sectional view of the doctor blade;

fig. 9 is a side view of the scraping mechanism and the dross discharge mechanism;

FIG. 10 is a schematic side view of the lower part of the magnetic filter;

FIG. 11 is a schematic top view of a magnetic filter.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used herein, the terms "vertical," "horizontal," "left," "right," "upper," "lower," "inner," "outer," "bottom," and the like are used in an orientation or positional relationship indicated based on the orientation or positional relationship shown in the drawings for convenience in describing the present invention and to simplify the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

Example 1

An external magnetic filter G as shown in fig. 1-6 comprises a frame 3, a magnetic assembly 1 disposed on the frame, a lifting mechanism 2 for driving the magnetic assembly to move longitudinally, a scraping mechanism 4 for scraping iron powder adsorbed by the magnetic assembly, and a scum discharging mechanism 5 for collecting and discharging the scraped iron powder. During the use, magnetic filter is independent setting in the filtering ponds (hold pending emulsion) 6 top, and through its magnetic component of elevating system drive fall the filtering ponds of below in carry out the iron powder and adsorb, promote again to magnetic filter, the scraping mechanism 4 of being convenient for strikes off the adsorbed iron powder of bar magnet to reach and carry out filterable mesh to the emulsion.

As shown in fig. 4-6, the scraping mechanism 4 is symmetrically installed on both sides of the magnetic bar 12 of the magnetic assembly, and comprises: a horizontal rotating shaft 41 parallel to the plane of the magnetic component 1, a scraper 42 fixed on the horizontal rotating shaft and having an outer edge matched with the surface of the longitudinally arranged magnetic rod 21, a gear 43 fixedly arranged at one end of the horizontal rotating shaft 41 extending out of the device shell, a longitudinally arranged air cylinder 44 fixedly arranged on the outer side surface of the shell, and a vertically arranged rack 45 connected to an air cylinder piston rod 441, wherein the rack 45 is meshed with the gear 43; the piston rod of cylinder drives the rack oscilaltion to drive gear carries out forward or reverse rotation, and then drives the relative bar magnet of scraper and opens and shuts, realizes scraping of the adsorbed impurity of scraper on to the bar magnet.

The scum discharging mechanism 5 is positioned below the scraping mechanism 4 and comprises a scum discharging groove 51 in a long tubular shape, a spiral conveying rod 52 arranged along the central shaft of the scum discharging groove and a driving motor 53 in transmission connection with the spiral conveying rod 52, an opening is arranged above the scum discharging groove 51, the opening is arranged corresponding to the scraping mechanism, and two ends of the spiral conveying rod 52 are connected with two end plates of the scum discharging groove 51 through bearings. The non-end portion of the horizontal rotation shaft of the scraping mechanism is fixedly connected to the top side of the dross discharge groove 51 through the fixing base 46.

In the magnetic filter of this embodiment, a plurality of magnetic rods are arranged and connected to form a magnetic assembly, and accordingly, a plurality of scraping mechanisms arranged in parallel in front and back need to be provided. In the scraping mechanism, which is located at the most peripheral edge of the magnetic filter near the device housing, one side of the rack 43 is provided with a tooth surface engaged with the gear, and one cylinder drives one scraper to move.

As shown in fig. 6, in the scraping mechanism located at the non-edge position of the magnetic filter, tooth surfaces engaged with the left and right gears are symmetrically provided on both sides of the rack 45, respectively, and one cylinder drives the left and right scrapers to perform reverse motion simultaneously. Therefore, the type of the rack 45 in the scraping mechanism and other matched structures can be reasonably selected according to the position of the scraping mechanism, so that the optimized configuration of the structure of the scraping mechanism is realized.

Preferably, as shown in fig. 7, the scraper 42 is composed of one or a plurality of scraper units closely arranged in front of and behind each other, so that the requirements of magnetic filters of different specifications on the length of the scraper can be met by selecting different numbers of scraper units to combine.

The outer edge of the top edge of the scraper 42 is in a tooth shape 421a matched with the surface of the magnetic rod, in this embodiment, the cross section of the magnetic rod is in a diamond shape, and the tooth shape of the scraper is in a zigzag shape matched with the tooth shape, so that the upper surface of the closed scraper is tightly attached to the outer surface of the scraper, the action areas of the scraper and the magnetic rod are enlarged, and the working efficiency of the scraping mechanism is improved.

In order to achieve the positioning of the scraper, the bottom edge of the scraper 42 is provided with a first connection hole 421b to which the horizontal rotation shaft 41 is connected.

In this embodiment, as shown in fig. 3, the scraping mechanism for the magnetic filter further includes a plurality of fixing bases fixedly disposed below the horizontal rotating shaft 41, an annular connecting portion 461 is disposed at an upper portion of the fixing base, through which the horizontal rotating shaft passes, and a connecting leg 462 connected to the scum discharging mechanism 5 of the magnetic filter is disposed at a lower portion of the fixing base. Correspondingly, the bottom of the scraper 42 is provided with a spacing groove 421C corresponding to the annular connecting portion of the fixing seat.

As shown in fig. 8, the scraper 42 includes an outer main blade 422 and an inner reinforcing blade 423 attached to each other, and the bottoms of the main blade and the reinforcing blade are fixedly connected to the horizontal rotary shaft 41 by a square connecting block 424. The double-layer blade improves the strength of the scraper, avoids the fracture of the scraper in the long-term use process and prolongs the service life of the scraper. Preferably, the height of the outer primary blade 422 is greater than the height of the inner reinforcing blade to maintain a good sharpness of the scraper.

In order to realize the fixed connection between the square connecting block and the blade and between the square connecting block and the horizontal rotating shaft, the middle part of the square connecting block 424 is provided with a second connecting hole 424a penetrating through the horizontal rotating shaft, a third connecting hole 424b is arranged at the position on the square connecting block corresponding to the first connecting holes 421b of the two scrapers, and the fixed connection between the scraper 42 and the horizontal rotating shaft 41 is realized through the cooperation of the fasteners and the first connecting holes 421b and the third connecting holes 422 b.

In addition, in order to reinforce the fixed connection between the square connecting block and the horizontal rotating shaft, a fourth connecting hole for connecting with the horizontal rotating shaft is further formed in the top surface or the bottom surface of the square connecting block.

Preferably, the upper portion (start position) and the lower portion (end position) of the rack movement stroke are provided with a first position switch 471 and a second position switch 472, respectively. In this embodiment, these two position switches are proximity sensor, and two position switches carry out fixed connection through a U-shaped connecting plate and cylinder connecting seat to two position switch's location.

When the rack moves up or down to approach and trigger the first position switch 471 or the second position switch 472, the position switch sends a signal to the control circuit to stop the cylinder at that stage of operation or to start reverse operation.

The arrangement of the first position switch 471 and the second position switch 472 not only effectively controls the rotation angle of the scraper, but also effectively controls the rotation direction of the scraper, so that the rotation angle of the scraper is too large, the scraping damage to the contact part of the magnetic bar and the scraper is avoided, the working state of the scraper is timely changed, and the magnetic bar is matched with the lifting movement.

In operation, when the magnetic rod 12 which can move up and down and back and forth moves down, the scraper 42 of the scraping mechanism 4 is closed to scrape off the iron powder and the scum adsorbed on the magnetic rod 12, and the iron powder and the scum slide down to the scum discharge groove 51 below along the inclined inner surface of the scraper, and are discharged to the drain 511 at the outer end of the scum discharge groove 51 and discharged along the scum chute 54 to be collected under the action of the spiral conveying rod 52.

Preferably, the cross section of the dross discharge groove 51 is a U-shaped structure with an open top, such a structure makes the open top of the dross discharge groove 51 as large as possible, so as to better collect the iron powder and dross scraped off by the scraping mechanism 4, and avoid the iron powder and dross from sliding to other positions, which causes difficulty in cleaning.

Preferably, as shown in fig. 3, a screw conveyor extends to the outside of the dross discharge groove 51 and is provided with a driven wheel 56, and the driving motor 53 is provided with a driving wheel 55, which is connected with the driven wheel through a transmission belt or a transmission chain. In this embodiment, the driving motor 53 is a speed reduction motor.

Preferably, as shown in fig. 10, the drive motor 53 is synchronously connected to a plurality of driven wheels 56 of a row of dross discharge chutes arranged in parallel via the same belt or chain. The arrangement greatly improves the working efficiency of the device, simplifies the whole structure of the device and reduces the manufacturing cost of the device. In other embodiments, the plurality of scum discharging mechanisms arranged in parallel can be divided into two groups, and the two groups of scum discharging mechanisms are respectively driven by the two driving motors, so that the independent work of the two groups of scum discharging mechanisms is ensured, and the two groups of scum discharging mechanisms can conveniently work in a staggered manner to adapt to different working states of the scraping mechanisms at corresponding positions.

Preferably, as shown in fig. 11, in order to increase the capacity of the dross discharge groove 51 and to enlarge the transfer distance, the dross discharge groove 51 is set to have a length greater than the width of the magnetic filter, and one end of the dross discharge groove 51 extends outward through one side case of the magnetic filter. Such an arrangement improves the working efficiency of the dross discharge mechanism.

Preferably, as shown in fig. 9, the top surfaces of both sides of the dross discharge groove are provided with connecting holes for connecting with the scraping mechanism, so as to facilitate the fixed connection (such as screw connection) with the scraping mechanism 4, thereby not only improving the stability of the connection between the internal mechanisms, but also facilitating the scraped iron powder and dross to smoothly slide down from the scraper into the dross discharge groove 51, and avoiding the leakage. Specifically, as shown in fig. 1, the middle position of the horizontal rotation shaft 41 of the scraping mechanism is fixedly connected to the top side of the dross discharge groove 51 through a fixing base. The specific structure of the fixing base is as described above.

The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.

It should be understood that equivalent alterations and modifications can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept, and all such alterations and modifications shall fall within the scope of the appended claims.

Claims

1. An external magnetic filter is characterized by comprising a rack (3), a magnetic assembly (1) arranged on the rack, a lifting mechanism (2) for driving the magnetic assembly to move longitudinally, a scraping mechanism (4) for scraping iron powder adsorbed by the magnetic assembly, and a scum discharging mechanism (5) for collecting and discharging the hung iron powder;

the scraping mechanism (4) is symmetrically arranged on two sides of the magnetic component (1) and comprises: the magnetic component comprises a horizontal rotating shaft (41) parallel to the plane of the magnetic component (1), a scraper (42) which is fixed on the horizontal rotating shaft and has the outer edge matched with the surface of a magnetic bar (21) arranged longitudinally, a gear (43) fixedly arranged at one end of the horizontal rotating shaft (41) extending out of a device shell, a cylinder (44) fixedly arranged longitudinally on the outer side surface of the shell, and a vertically arranged rack (45) connected to a cylinder piston rod (441), wherein the rack (45) is meshed with the gear (43); a piston rod of the air cylinder drives the rack to lift up and down, so that the drive gear rotates forwards or reversely, the scraper is driven to open and close relative to the magnetic rod, and the scraper can scrape impurities adsorbed on the magnetic rod;

the scum discharge mechanism (5) is positioned below the scraping mechanism (4) and comprises a long tubular scum discharge groove (51), a spiral conveying rod (52) arranged along the central shaft of the scum discharge groove and a driving motor (53) in transmission connection with the spiral conveying rod (52), an opening is arranged above the scum discharge groove (51), the opening is arranged corresponding to the scraping mechanism, and two ends of the spiral conveying rod (52) are connected with two end plates of the scum discharge groove (51) through bearings; the non-end part of the horizontal rotating shaft of the scraping mechanism is fixedly connected with the top side edge of the scum discharge groove (51) through a fixed seat (46).

2. A magnetic filter as claimed in claim 1, wherein the upper part of the holder (46) is a ring-shaped connection part (461) through which the horizontal rotation shaft passes, the lower part of the holder is a connection leg (462) which is screwed with the side of the dross discharge groove (51), and the bottom of the scraper (42) is provided with a catching groove (421C) corresponding to the ring-shaped connection part of the holder.

3. A magnetic filter as claimed in claim 1 or 2, wherein the rack (45) is symmetrically provided with tooth surfaces engaging with the left and right gears on both sides, and one cylinder drives the left and right scrapers to move in opposite directions; or one side of the rack (45) is provided with a tooth surface meshed with the gear, and one air cylinder drives one scraper to move.

4. The magnetic filter according to claim 1, wherein the scraper (42) is composed of one or more scraper units closely arranged in front and back, the top edge of the scraper (42) is in a tooth shape (421a) matching with the surface of the magnetic bar, and the bottom edge of the scraper (42) is provided with a first connecting hole (421b) for connecting with the horizontal rotating shaft (41).

5. The magnetic filter according to claim 4, wherein the scraper (42) comprises an outer main blade (422) and an inner reinforcing blade (423) which are attached to each other, the bottoms of the main blade and the reinforcing blade are fixedly connected with the horizontal rotating shaft (41) through a square connecting block (424), and a second connecting hole (424a) for the horizontal rotating shaft to penetrate through is formed in the middle of the square connecting block;

the position that corresponds first connecting hole (421b) of scraper on the square connecting block sets up third connecting hole (424b), through the cooperation of fastener simultaneously with first connecting hole (421b), third connecting hole (424b), realizes the fixed connection of scraper (42) and horizontal rotation axle (41).

6. A magnetic filter as claimed in claim 1, in which the upper and lower parts of the travel of the rack are provided with a first position switch (471) and a second position switch (472), respectively.

7. A magnetic filter as claimed in claim 1, in which the drive motor (53) is synchronously connected to a plurality of driven wheels (56) of a row of dross discharge chutes arranged in parallel via a drive belt or chain.

8. A magnetic filter as claimed in claim 7, characterised in that a scum chute (54) is provided, and the upper inlet of the scum chute (54) is in communication with a drain outlet (511) provided in the bottom of the outer end of the scum discharge chute (51).