CN217829091U - Filter - Google Patents

Abstract

The application discloses a filter, wherein, this filter includes: the shell comprises a side wall, a feed inlet arranged close to one end of the side wall, and a discharge outlet and a slag discharge outlet arranged close to the other end of the side wall; the filter element assembly comprises a filter screen, the filter screen is arranged in the shell and is arranged at an interval with the side wall so as to divide the interior of the shell into a first cavity and a second cavity, wherein the feeding port and the slag discharging port are communicated with the first cavity, and the discharging port is communicated with the second cavity; arrange the sediment subassembly, arrange the sediment subassembly and include row sediment pipeline and interval setting first power valve and the second power valve in arranging the sediment pipeline, arrange the sediment pipeline connection and arrange the cinder notch to with first cavity intercommunication, first power valve and the alternative switching of second power valve. In this way, the filter in this application can carry out the emission of filter residue automatically to effectively alleviate the filter core of filter and the wearing and tearing of cavity, so that the filter effect of filter can be continuously stable on a better level.

Description

Filter

Technical Field

The application relates to the technical field of material filtration, especially, relate to a filter.

Background

Nowadays, in the production of industrial products, the filtration of raw product materials is usually involved, and in the filtration, the discharge of waste residues generated by filtration is inevitably required, for example, in the field of paper making, the filtration of GCC (Ground Calcium Carbonate) filler is usually involved.

However, the waste residues screened by the existing filter usually need to be discharged manually at regular intervals, so that the problems of general filtering effect, poor operation stability, material leakage caused by cavity abrasion and the like caused by the fact that the filter is difficult to clean during shutdown maintenance and filter elements of the filter are abraded too quickly exist for a long time.

SUMMERY OF THE UTILITY MODEL

The application provides a filter to can solve the filter among the prior art and need carry out artifical periodic discharge, so that have the general, poor, the too fast problem of wearing and tearing of filter effect for a long time.

In order to solve the technical problem, the application adopts a technical scheme that: providing a filter, wherein the filter comprises: the shell comprises a side wall, a feed inlet arranged close to one end of the side wall, and a discharge outlet and a slag discharge outlet arranged close to the other end of the side wall; the filter element assembly comprises a filter screen, the filter screen is arranged in the shell and is arranged at an interval with the side wall so as to divide the interior of the shell into a first cavity and a second cavity, wherein the feeding port and the slag discharging port are communicated with the first cavity, and the discharging port is communicated with the second cavity; arrange the sediment subassembly, arrange the sediment subassembly and include row sediment pipeline and interval setting first power valve and the second power valve in arranging the sediment pipeline, arrange the sediment pipeline connection and arrange the cinder notch to with first cavity intercommunication, first power valve and the alternative switching of second power valve.

The side walls comprise a first side wall and a second side wall which are connected, the first side wall is in a cylindrical shape, the second side wall is in a conical shape, the feed inlet and the discharge outlet are respectively arranged at two opposite ends close to the first side wall, and the slag discharge port is arranged at one end close to the second side wall and far away from the first side wall.

Wherein, the filter element subassembly still includes rabbling mechanism, and rabbling mechanism includes main shaft, the first impeller of elastic connection main shaft and connects the scraper blade of first impeller, and first impeller and scraper blade correspond first lateral wall and set up the first part at first cavity, and one side butt in the filter screen of scraper blade.

The stirring mechanism is also provided with a second impeller, the second impeller is connected with the main shaft, is arranged at intervals with the first impeller and is arranged at the second part of the first cavity corresponding to the second side wall.

The stirring mechanism further comprises an elastic piece, and the two opposite ends of the elastic piece are respectively connected with the main shaft and the first impeller.

The stirring mechanism further comprises a supporting plate and a supporting rod, one end of the supporting plate is connected with the first impeller, the other end, far away from the first impeller, of the supporting plate forms a long hole, and the supporting rod penetrates through the long hole and is connected to the supporting plate in a buckled mode.

The filter further comprises a power assembly, the power assembly comprises a motor and an output shaft connected with the motor, the output shaft is connected with a main shaft, when the motor drives the output shaft to rotate, the output shaft drives the main shaft to rotate, and the main shaft drives the first impeller and the scraper to rotate relative to the filter screen.

Wherein, the filter still includes first promotion subassembly, and first promotion subassembly includes power unit, telescopic link and first cantilever, and the telescopic link is connected to the telescopic link, and telescopic link and filter element group spare are connected respectively to the relative both ends of first cantilever, and when power unit drive telescopic link concertina movement, the telescopic link drives the relative casing of first cantilever and keeps away from or be close to the motion, and first cantilever drives the relative casing of filter element group spare and keeps away from or be close to the motion.

The filter further comprises a second lifting assembly, the second lifting assembly comprises a ratchet mechanism, a worm, a guide nut, a first wear-resistant sleeve, a second wear-resistant sleeve and a second cantilever, the ratchet mechanism is connected with the first wear-resistant sleeve, the two opposite ends of the worm are respectively sleeved on the first wear-resistant sleeve and the second wear-resistant sleeve, the guide nut is sleeved with the worm and abutted against one side face of the second wear-resistant sleeve facing the first wear-resistant sleeve, the two opposite ends of the second cantilever are respectively connected with the second wear-resistant sleeve and a filter element assembly, when the ratchet mechanism drives the first wear-resistant sleeve to rotate relative to the second wear-resistant sleeve, the first wear-resistant sleeve and the second wear-resistant sleeve drive the worm to rotate, the worm drives the guide nut to move close to and far away from the first wear-resistant sleeve along the spiral line direction, the guide nut drives the second wear-resistant sleeve to move and far away from the first wear-resistant sleeve, the second wear-resistant sleeve drives the second cantilever to move and far away from the first wear-resistant sleeve, and the second cantilever drives the filter element to move and far away from the shell.

The filter further comprises a controller, the controller is connected with the first power valve and the second power valve, the controller sends control signals to the first power valve and the second power valve at intervals of a first time length, so that the first power valve is switched from an open state to a closed state and is maintained for a second time length, the second power valve is switched from the closed state to the open state and is maintained for the second time length, and the second time length is smaller than the first time length.

The beneficial effect of this application is: different from the prior art, the filter screen in the filter element assembly of the filter provided by the application is arranged in the shell and is arranged at an interval with the side wall of the shell so as to divide the interior of the shell into a first cavity and a second cavity, wherein the feed inlet and the slag discharge port on the shell are communicated with the first cavity, and the discharge port on the shell is communicated with the second cavity, so that when a medium to be filtered enters the first cavity from the feed inlet and is filtered by the filter element assembly, filtrate in the medium to be filtered passes through the filter screen and is discharged from the discharge port, and filter residues in the medium to be filtered are blocked by the filter screen and are discharged from the slag discharge port; further, arrange the sediment mouth is connected to row's sediment pipeline in arranging the sediment subassembly to with first cavity intercommunication, and the interval sets up the first power valve and the second power valve switching in turn in arranging the sediment pipeline, with the automatic emission that can carry out the filter residue automatically, thereby effectively alleviated the wearing and tearing of filter core and cavity, also just make the filter effect of filter can the sustained stability on better level, avoided latent shut down hidden danger, and make the washing when shutting down and maintaining also comparatively convenient.

Drawings

FIG. 1 is a schematic structural view of an embodiment of the filter of the present application;

FIG. 2 is a schematic view of the housing of the filter of FIG. 1;

FIG. 3 is a schematic view of the filter screen attachment mechanism of the filter cartridge assembly of FIG. 1;

FIG. 4 is a schematic view of the agitation mechanism of the filter cartridge assembly of FIG. 1;

FIG. 5 is a schematic view of a support plate in the stirring mechanism of FIG. 4;

fig. 6 is a schematic view of the lifting assembly in the filter of fig. 5.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. In the embodiment of the present application, all the directional indicators (such as upper, lower, left, right, front, and rear … …) are used only to explain the relative positional relationship between the components, the movement, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.

The present application will be described in detail with reference to the accompanying drawings and examples.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a filter according to the present application. In the present embodiment, the filter 1 includes: a housing 10, a filter element assembly 20, and a slag discharge assembly 30.

The filter 1 provided in the present application is specifically a device for filtering a solid-liquid mixture to remove fixed substances with too large particle sizes, which do not meet production requirements.

Specifically, the housing 10 in the filter 1 further includes a side wall 11 to form a hollow interior through the side wall 11, and has a plurality of open chambers for accommodating the medium to be filtered, wherein a feeding port 12 is correspondingly disposed near one end of the side wall 11, a discharging port 13 and a slag discharging port 14 are correspondingly disposed near the other end of the side wall 11, and the discharging port 13 is located between the feeding port 12 and the slag discharging port 14, that is, the slag discharging port 14 is closer to the bottom of the chamber formed by the side wall 11.

Further, the filter element assembly 20 specifically includes a filter screen 21, and the filter screen 21 is specifically disposed in the housing 10, that is, in a cavity correspondingly formed in the side wall 11, and is disposed at an interval with the side wall 11 so as to be able to divide the internal space of the housing 10 into the first cavity 101 and the second cavity 102, that is, before the medium to be filtered enters the second cavity 102 from the first cavity 101, the medium to be filtered needs to be filtered and screened by the filter screen 21 first.

The feeding port 12 and the slag discharge port 14 are correspondingly communicated with the first cavity 101, and the discharge port 13 is correspondingly communicated with the second cavity 102. It can be known that when the medium to be filtered enters the first cavity 101 from the inlet 12 and is filtered by the filter element assembly 20, the filtrate in the medium to be filtered passes through the filter screen 21 and enters the second cavity 102, and is discharged from the outlet 13, and the filter residue in the medium to be filtered is blocked by the filter screen 21, continues to remain in the first cavity 101, and moves towards the bottom of the first cavity 101 under the action of gravity and any reasonable force, such as centrifugal force, and is discharged from the residue discharge port 14.

It should be noted that the medium to be filtered specifically refers to a solid-liquid mixed material for production, the corresponding filtrate is a solution of a small-particle solid material meeting production requirements, and the filter residue is a large-particle solid material with an excessively large particle size which does not meet production requirements and needs to be filtered.

Wherein, the slag discharging assembly 30 further comprises a slag discharging pipeline 31, and a first power valve 32 and a second power valve 33 which are arranged in the slag discharging pipeline 31 at intervals, and an opening at one end of the slag discharging pipeline 31 is specifically connected to the slag discharging port 14 to communicate with the first cavity 101, and an opening at the other end thereof corresponds to a slag recovering device (not shown), or the trench is arranged, and the first power valve 32 and the second power valve 33 are distributed between openings at two ends of the slag discharging pipeline 31 at intervals and are alternatively opened and closed.

It can be understood that, after the medium to be filtered enters from the inlet 12 and is filtered by the filtering assembly, the filter residue is discharged from the residue discharge port 14 to enter the residue discharge pipeline 31, and then the filter residue can be discharged out of the residue discharge pipeline 31 in sequence in the alternate opening and closing processes of the first power valve 32 and the second power valve 33, so that the filter residue can be discharged automatically, and the problem that the filter residue is continuously present in the internal cavity of the filter 1 in the working process of the filter 1, so that the filter element and the cavity of the filter 1 are abraded, and further the filter effect is poor and the operation stability is poor is solved, that is, the abrasion of the filter element and the cavity of the filter 1 is effectively relieved by automatically discharging the filter residue, the filter effect of the filter 1 can be continuously stabilized on a good level, the potential hidden danger of shutdown is avoided, the cleaning during shutdown maintenance is convenient, and the centralized treatment of excessive deposition for a long time is not needed.

In an embodiment, the filter 1 further comprises a controller (not shown) specifically connected to the first power valve 32 and the second power valve 33, and configured to send a control signal to the first power valve 32 and the second power valve 33 at intervals of a first duration to switch the first power valve 32 from the open state to the closed state and to return to the open state after maintaining the second duration, and synchronously switch the second power valve 33 from the closed state to the open state and to return to the closed state after maintaining the second duration, wherein the second duration is less than the first duration.

It will be appreciated that the first power valve 32 is embodied as a normally open valve to be triggered closed upon a triggering action, and the second power valve 33 is embodied as a normally closed valve to be triggered open upon a triggering action. Accordingly, during the continuous filtration of the medium to be filtered, the residue therein will pass through the first power valve 32 into the residue discharge pipe 31 between the first power valve 32 and the second power valve 33 at every first time interval, so that the residue is discharged during the second time interval when the first power valve 32 is closed and the second power valve 33 is opened.

Optionally, the Controller may specifically include one of a PLC (Programmable Logic Controller), a single chip microcomputer, or a microprocessor, which is any reasonable device capable of performing programming and program control, so as to output a corresponding control signal correspondingly, and adjust the first duration and the second duration correspondingly through programming, which is not limited in this application.

Alternatively, the first power valve 32 and the second power valve 33 are embodied as pneumatic valves or electric valves to be controlled by a controller and perform opening or closing actions in cooperation with corresponding power devices (not shown).

Optionally, the first time period is 10min-15min and the second time period is 10s-15s. In other embodiments, when different media to be filtered are targeted, the first time period and the second time period may also be any other reasonable time period range, which may be determined by the actual situation of the filtering scenario, and this is not limited in this application.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a housing of the filter of fig. 1.

In an embodiment, the side wall 11 of the housing 10 further includes a first side wall 111 and a second side wall 112 connected to each other, the first side wall 111 is disposed in a cylindrical shape, the second side wall 112 is disposed in a tapered shape, the feeding hole 12 and the discharging hole 13 are correspondingly disposed near opposite ends of the first side wall 111, respectively, and the slag discharging hole 14 is disposed near an end of the second side wall 112 away from the first side wall 111.

Further, in an embodiment, the filter screen 21 in the filter element assembly 20 is specifically disposed in a cylindrical shape having a same central axis as the first sidewall 111, and is located in the cylindrical cavity correspondingly formed by the first sidewall 111, so as to divide the filter cavity correspondingly formed by the entire outer wall into the first cavity 101 and the second cavity 102.

Optionally, the second sidewall 112 may have a corresponding taper with an internal taper angle a of 100-130, and preferably 108.

With continued reference to fig. 3, fig. 3 is a schematic structural view of a filter screen fixing mechanism in the filter element assembly of fig. 1.

It can be understood that, during the process of filtering the medium to be filtered by the filter element assembly 20, it is inevitable to drive some components thereof to rotate or vibrate, and to ensure the relative stability of the filter screen 21, it is necessary to effectively fix the filter screen 21.

Specifically, filter element group 20 still includes filter screen fixed establishment 23, this filter screen fixed establishment 23 further includes cavity top cap clamp plate 231, filter screen reel 232, fixed block 233 and plug pin 234, wherein, this cavity top cap clamp plate 231 is connected on casing 10, and filter screen reel 232 connects on cavity top cap clamp plate 231 through fixed block 233 again, and the top correspondence of filter screen reel 232 is formed with the mounting hole, plug pin 234 can be pegged graft to in this mounting hole, in order to fix filter screen 21 on filter screen reel 232, and guarantee that filter screen 21 can not rotate along with the rotatable part in the filter element group 20.

Continuing to refer to fig. 4 and 5, fig. 4 is a schematic structural view of the stirring mechanism in the filter element assembly of fig. 1, and fig. 5 is a schematic structural view of the support plate in the stirring mechanism of fig. 4.

In one embodiment, the filter element assembly 20 further comprises the stirring mechanism 22, and the stirring mechanism 22 further comprises a main shaft 221, a first impeller 222 elastically connected to the main shaft 221, and a scraper (not shown) connected to the first impeller 222, and the first impeller 222 and the scraper are disposed in the first portion 1011 of the first cavity 101 corresponding to the first sidewall 111.

It can be understood that the main shaft 221 can be driven to rotate, so as to drive the first impeller 222 and the scraper to rotate relative to the filter screen 21, so that when the medium to be filtered enters the first cavity 101 from the feeding hole 12, the first impeller 222 can provide centrifugal force for the medium to be filtered, and the medium to be filtered moves toward the first side wall 111 under the action of the centrifugal force, so that a filtrate portion in the medium to be filtered passes through the filter screen 21 and enters the second cavity 102, and a residue portion is blocked by the filter screen 21, attached to the surface of the filter screen 21, or moves toward the bottom of the first cavity 101 under the action of its own gravity, and is discharged from the residue discharge hole 14.

In order to discharge all the filter residues as much as possible effectively, one side of the scraper is abutted against one side of the filter screen 21, so that when the scraper is driven to rotate relative to the filter screen 21, the filter residues attached to the filter screen 21 can be peeled off, so that the filter residues continue to move to the bottom of the first cavity 101 and are discharged through the residue discharge port 14.

Optionally, the first impeller 222 and the scraper are rectangular, and the width of the scraper is greater than that of the first impeller 222, so that one side of the scraper can protrude out of the first impeller 222 to be disposed to abut against one side surface of the filter screen 21, and the first impeller 222 is disposed at an interval from the filter screen 21. In other embodiments, the width of the scraper may be equal to or smaller than the width of the first impeller 222, but one side of the scraper protrudes out of the first impeller 222 to abut against one side surface of the filter screen 21, and the other side of the scraper is connected to the first impeller 222, which is not limited in this application.

Optionally, each scraper blade corresponds to two first impeller 222, and each scraper blade is detachably clamped between the two first impeller 222 correspondingly to realize connection therewith, and protrudes from the two first impeller 222 to abut against one side surface of the filter screen 21. In other embodiments, each scraper may also correspond to one first impeller 222 and be connected to one side of the first impeller 222 through a screw assembly, which is not limited in this application.

Optionally, the number of the scrapers is any reasonable number such as 2, 3, or 4, and the number of the first impellers 222 corresponds to any reasonable number such as 2, 4, 3, 6, 4, or 8, which is not limited in this application.

Optionally, the scraper blade is any reasonable wear-resistant material that is soft and has certain intensity such as plastics, silica gel or epoxy board, and this application does not limit this.

In an embodiment, the filter 1 further includes a power assembly 50, and the power assembly 50 further includes a motor 51 and an output shaft 52 connected to the motor 51, and the output shaft 52 is further connected to a main shaft 221 of the stirring mechanism 22, so that when the motor 51 drives the output shaft 52 to rotate, the output shaft 52 can drive the main shaft 221 to rotate, and the main shaft 221 will drive the first impeller 222 and the scraper to rotate relative to the filter screen 21.

Further, the power assembly 50 further includes a gear box 53, and the motor 51 drives the output shaft 52 to rotate through the gear box 53.

In an embodiment, the stirring mechanism 22 further includes an elastic member 224, two opposite ends of the elastic member 224 are respectively connected to the main shaft 221 and the first impeller 222, so that the first impeller 222 is elastically connected to the main shaft 221, and when the scraper abuts against the filter screen 21 and rotates relative to the filter screen 21, the elastic member 224 can buffer the impact applied to the scraper, so as to reduce the abrasion of the scraper to the filter screen 21 as much as possible, and reduce the impact applied to the first impeller 222.

Optionally, the number of the first impellers 222 is specifically 2, and the number of the elastic members 224 is correspondingly 4, so that the 2 first impellers 222 can be elastically connected to the two opposite ends of the main shaft 221 by two sets, respectively, wherein each 2 sets of the elastic members 224 are specifically located on different horizontal planes, so that the insufficient elastic expansion amount caused by simultaneous force on the same plane can be correspondingly reduced.

Alternatively, the elastic member 224 specifically includes springs (not shown) and fixing rods, each spring corresponds to 2 fixing rods, the 2 fixing rods are respectively correspondingly disposed on the main shaft 221 and the first impeller 222, and opposite ends of each spring are respectively connected to the 2 fixing rods.

Optionally, the spring is of Φ 2 × 12 × 35 × 7n or other reasonable type, and is made of stainless steel, which is not limited in this application.

In one embodiment, the stirring mechanism 22 further comprises a supporting plate 225 and a supporting rod 226, one end of the supporting plate 225 is connected to the first impeller 222, the other end of the supporting plate 225 away from the first impeller 222 is formed with an elongated hole 2251, and the supporting rod 226 passes through the elongated hole 2251 to be fastened to the supporting plate 225.

Alternatively, the number of the supporting plates 225 is specifically 4, and 2 of the supporting plates 225 are matched with each other to connect one end of the supporting rod 226, and the other 2 supporting plates 225 are matched with each other to connect the other end of the supporting rod 226.

Further, each support plate 225 is a semi-circular arc, a clamping part 2252 is formed at a middle portion corresponding to the semi-circular arc, each support plate 225 is connected to the first impeller 222 through the clamping part 2252, and two opposite ends of each support plate 225 away from the clamping part 2252 are formed with elongated holes 2251,2, and the elongated holes 2251 of the support plates 225 are stacked on top of each other, so that one end of the support rod 226 can pass through the elongated hole 2251 and be fastened to the support plate 225, and one end of the support rod 226 can move back and forth in the elongated hole 2251.

It can be understood that, through the corresponding arrangement of the elastic member 224, the supporting plate 225 and the supporting rod 226, the stirring mechanism 22 has the functions of horizontal and vertical vibration prevention and over-grinding of the filter screen 21, the upper and lower ends of the first impeller 222 in the vertical direction respectively control the tension state of the scraper and the filter screen 21 through the elastic member 224, and the buckling position of the supporting rod 226 in the horizontal direction can move left and right in the horizontal direction due to the allowance left at the buckling position of the supporting plate 225 and the supporting rod 226, and the stroke of the buckling position of the supporting rod 226 is 0-10mm. Therefore, the elastic member 224 and the movable fastening manner are adopted, so that the scraping and abrasion damage of the filter screen 21 by the scraper can be effectively reduced, and the left and right fixing rods are designed into a structure of one fixing rod on the other, so that the shortage of spring expansion caused by simultaneous stress on the same plane can be effectively reduced.

In one embodiment, the stirring mechanism 22 further includes a second impeller 223, and the second impeller 223 is specifically connected to the main shaft 221 and spaced apart from the first impeller 222 so as to be capable of rotating synchronously with the first impeller 222. And the second impeller 223 is disposed at the second portion 1012 of the first cavity 101 corresponding to the second sidewall 112, so that when the filter residue enters the second portion 1012 from the first portion 1011 of the first cavity 101, the filter residue can be discharged from the residue discharge port 14 under the centrifugal action provided by the rotation of the second impeller 223.

Optionally, the minimum distance between the second impeller 223 and the second sidewall 112 is no less than 3 mm, and no greater than 5 mm. In other embodiments, the minimum distance may be any other reasonable range, and is specifically determined by the range of the maximum particle size of the filter residue, so that the gap is controlled to prevent the particles in the filter residue from wearing the second impeller 223 too fast, and the problem of insufficient centrifugal force caused by too large gap is avoided, which is not limited in the present application.

Alternatively, the second impellers 223 are two in number and have a right trapezoid shape.

Optionally, a through hole is formed at a central position of each second impeller 223 so as to reduce the weight of the second impeller 223 as much as possible to reduce a load of the motor 51 for driving the main shaft 221 to rotate.

In a specific example, for the sake of easy understanding, the medium to be filtered is exemplified by a mixture of GCC (Ground Calcium Carbonate) and water, and it is known that GCC is generally made by directly mechanically crushing natural calcite, limestone, chalk, etc. GCC is generally used as a filler or a coating material, and the filter 1 used in this embodiment is specifically referred to as a filter 1 used as a GCC filler. The heavy calcium carbonate has the characteristics of high whiteness and fine particles, so that the opacity of paper can be obviously improved, the ink absorption speed is high, and the drying of printing ink can be promoted, so that the heavy calcium carbonate is one of the most suitable fillers for the board card.

When calcium carbonate is used as filler, the combustion of paper can be effectively controlled, the air permeability and opacity of the paper are effectively improved, and the burnt cigarette ash is white and beautiful, so the calcium carbonate is also an indispensable material for cigarette paper. Meanwhile, the GCC filler has low raw material purchasing cost and high processing and manufacturing efficiency, can effectively replace deinked pulp, chemical mechanical pulp and the like as fillers, and is widely applied to various paper machines for manufacturing board cards and cigarette packets.

The GCC filler has a small diameter (generally 5-10 μm), so that the GCC filler is easy to agglomerate when being mixed and stirred with water and other additives, and due to the limitation of processing technologies such as a wet grinder, the diameter of part of the GCC filler exceeds 25 μm, and after the GCC filler is excessively large or agglomerated, unqualified fillers distributed in a core layer cause the defects of poor paper flatness, abnormal quality, broken paper of a net part and the like. A GCC filter 1 suitable for use before the wire headbox is of particular importance.

Considering that the GCC filler is mainly a mixture of ground calcium carbonate and water, and causes partial calcium carbonate precipitation during transportation in a pipeline, the stirring and dispersing function of the stirring mechanism 22 is one of the important points of the work (the conventional rotating speed is 2 rad/s); secondly, the particles which do not pass through the filter screen 21 are adsorbed on the surface of the filter screen 21 for a long time, the particles on the inner wall of the filter screen 21 are scraped by a scraper attached to the stirring mechanism 22, and the particles sink to the bottom of the filter 1 under the action of gravity and are discharged through the slag discharge port 14.

Wherein, wait the large granule material in the filter medium, also filter residue will deposit in the bottom to get rid of under the centrifugal force effect of second impeller 223 to arrange cinder notch 14, first power valve 32 is in normally open state, and large granule thing sinks to second power valve 33 department through the decurrent scum pipe, closes first power valve 32 every 15 minutes, opens second power valve 33 and arranges filler and large granule thing in the scum pipe, also the filter residue to the trench.

Further, the filtering and deslagging operation principle of the filter 1 is specifically that the filler is ground from a paint shop and then fully mixed with water, additives and the like to enter the feed inlet 12 (the valve at the feed inlet 12 is manually opened, and the manual opening is convenient for replacing the filter screen 21). The filler will gradually fill the entire first cavity 101. Wherein, the normal filler directly passes through the filter screen 21 to the second cavity 102, and enters the subsequent production equipment from the discharge port 13 for use, while the large particles are partially adsorbed on the surface of the filter screen 21, and partially directly settle to the slag discharge port 14 under the action of gravity (the first impeller 222 is narrow and has a lower speed of 2 r/s, and the centrifugal force generated on the large particles can be basically ignored); the large particles adsorbed on the surface of the filter screen 21 pass through the outer scraper of the stirring mechanism 22, so that the large particles are separated from the surface of the filter screen 21 and are settled to the bottom together with the large particles in the first cavity 101.

The great granule that can prevent of second impeller 223 size is depositd in the bottom, and large granule material distributes under second impeller 223 centrifugal force effect between bottom toper cavity and second impeller 223, and large granule material is got rid of to in the row's cinder notch 14 time and is got rid of to row's cinder pipe. Under the normal state, the first power valve 32 is in a normally open state, the second power valve 33 is in a normally closed state, and large granular substances are intensively settled at the bottom of the slag discharge pipeline 31; and every 15 minutes the first dynamic valve 32 is closed and the second dynamic valve 33 is opened to discharge the packing and large particulate matter in the pipe.

It should be noted that, when the filter 1 is in a working state, the cavity is filled with the filler, and the slag discharge pipe is also filled with the filler, the key principle of slag discharge is that the centrifugal forces of the first impeller 222 and the second impeller 223 are different, and the centrifugal force of the second impeller 223 can ensure that large particulate matters are not settled at the bottom and are close to the second side wall 112 as much as possible.

Through subsequent tests and practical application, the slag is automatically discharged once every 15 minutes, the slag discharge time is about 10s-15s, the filter element replacement of the filter 1 is reduced from 2 times per month to 0.7 times per month, the abrasion rate of the filter screen 21 is greatly reduced, and in addition, the vibration of the cavity is reduced by about 25 percent (from 1.5mm/s to 1.2 mm/s). That is, effectively solved former equipment wearing and tearing too fast, the big problem of cavity vibration has avoided the hidden danger of latent shut down again, has obtained good actual effect.

Continuing to refer to fig. 6, fig. 6 is a schematic diagram of a lifting assembly of the filter of fig. 5.

In an embodiment, the filter 1 further includes a second lifting assembly 40, the second lifting assembly 40 includes a ratchet mechanism 41, a worm 42, a guide nut 43, a first wear-resistant sleeve 44, a second wear-resistant sleeve 45, and a second cantilever 46, the ratchet mechanism 41 is connected to the first wear-resistant sleeve 44, opposite ends of the worm 42 are respectively sleeved on the first wear-resistant sleeve 44 and the second wear-resistant sleeve 45, the guide nut 43 is sleeved on the worm 42 and abuts against a side surface of the second wear-resistant sleeve 45 facing the first wear-resistant sleeve 44, and opposite ends of the second cantilever 46 are respectively connected to the second wear-resistant sleeve 45 and the filter element assembly 20.

When the ratchet mechanism 41 drives the first wear-resistant sleeve 44 to rotate relative to the second wear-resistant sleeve 45, the first wear-resistant sleeve 44 and the second wear-resistant sleeve 45 can drive the worm 42 to rotate, the worm 42 drives the guide nut 43 to move close to and away from the first wear-resistant sleeve 44 along the spiral direction, the guide nut 43 drives the second wear-resistant sleeve 45 to move away from the first wear-resistant sleeve 44, the second wear-resistant sleeve 45 drives the second cantilever 46 to move away from the first wear-resistant sleeve 44, and the second cantilever 46 drives the filter element assembly 20 to move away from the housing 10, so that the filter element assembly 20 can be taken out of the inner space of the housing 10 for cleaning, maintenance or replacement.

In another embodiment, the filter 1 further includes a first lifting assembly (not shown), the first lifting assembly further includes a power mechanism (not shown), a telescopic rod (not shown), and a first cantilever (not shown), the telescopic rod is connected to the telescopic rod, opposite ends of the first cantilever are respectively connected to the telescopic rod and the filter element assembly 20, when the power mechanism drives the telescopic rod to move telescopically, the telescopic rod drives the first cantilever to move away from or close to the housing 10, and the first cantilever drives the filter element assembly 20 to move away from or close to the housing 10.

It can be understood that, by correspondingly arranging a set of second lifting assemblies 40, the second cantilever 46 is fixed with the top cover of the filter element assembly 20 for straight-line lifting and straight-line descending, so that when the filter 1 is washed, the fixing bolt on the top cover is unscrewed, the second lifting assembly 40 lifts the second cantilever 46, the motor 51, the gear box 53 and the output shaft 52 are drawn out, the manual sewage draining outlet 60 correspondingly arranged at the bottom of the second side wall 112 is opened, high-pressure water is introduced for cleaning, and the filter element assembly 20 in the filter 1 can also be selectively drawn out for cleaning.

The second lifting assembly 40 is designed to facilitate the cleaning of the filter 1, so that when the filter is stopped or another filter element assembly 20 is switched (two sets of filter element assemblies 20 are generally installed for convenient maintenance), the top cover of the filter element assembly 20 can be opened by the ratchet mechanism 41 (mainly a set of worm and gear 42 transmission device) of the second lifting assembly 40 to draw out the filter element, so as to clean the filter, and the bottom manual sewage draining outlet 60 can be opened to flush the cavity, the impeller and the like of the filter 1.

In one embodiment, the filter 1 further includes a fixing frame 70, and the housing 10 and the lifting assembly 40 are specifically connected to the fixing frame 70 to be supported and fixed by the fixing frame 70.

The beneficial effect of this application is: different from the prior art, the filter screen in the filter element assembly of the filter provided by the application is arranged in the shell and is arranged at an interval with the side wall of the shell so as to divide the interior of the shell into a first cavity and a second cavity, wherein the feed inlet and the slag discharge port on the shell are communicated with the first cavity, and the discharge port on the shell is communicated with the second cavity, so that when a medium to be filtered enters the first cavity from the feed inlet and is filtered by the filter element assembly, filtrate in the medium to be filtered passes through the filter screen and is discharged from the discharge port, and filter residues in the medium to be filtered are blocked by the filter screen and are discharged from the slag discharge port; further, arrange the sediment mouth is connected to row's sediment pipeline in arranging the sediment subassembly to with first cavity intercommunication, and the interval sets up the first power valve and the second power valve switching in turn in arranging the sediment pipeline, in order can carry out the emission of filter residue automatically, thereby effectively alleviated the wearing and tearing of filter core and cavity, also just make the filter effect of filter can the sustained stability on better level, avoided latent shut down hidden danger, and make the washing when shutting down and maintaining also comparatively convenient.

The above embodiments are merely examples and are not intended to limit the scope of the present disclosure, and all modifications, equivalents, and flow charts using the contents of the specification and drawings of the present disclosure or those directly or indirectly applied to other related technical fields are intended to be included in the scope of the present disclosure.

Claims (10)

1. A filter, comprising:

the shell comprises a side wall, a feed inlet arranged close to one end of the side wall, and a discharge outlet and a slag discharge outlet arranged close to the other end of the side wall;

the filter element assembly comprises a filter screen, the filter screen is arranged in the shell and is arranged at an interval with the side wall so as to divide the inner part of the shell into a first cavity and a second cavity, wherein the feeding hole and the slag discharging hole are communicated with the first cavity, and the discharging hole is communicated with the second cavity;

arrange the sediment subassembly, it sets up including arranging sediment pipeline and interval to arrange sediment subassembly first power valve and second power valve in the sediment pipeline, arrange the sediment pipe connection arrange the cinder notch, with first cavity intercommunication, first power valve with the second power valve switching in turn.

2. The filter of claim 1,

the lateral wall is including the first side wall and the second lateral wall that are connected, the first side wall is the tube-shape setting, the second lateral wall is the toper setting, the feed inlet with the discharge gate sets up respectively and is being close to the relative both ends of first side wall, it is being close to arrange the cinder notch setting the second lateral wall is kept away from the one end of first side wall.

3. The filter of claim 2,

the filter element component further comprises a stirring mechanism, the stirring mechanism comprises a main shaft, an elastic connection, a first impeller of the main shaft and a scraper of the first impeller, the first impeller and the scraper correspond to the first side wall of the first cavity, and one side of the scraper is abutted to the filter screen.

4. The filter of claim 3,

the stirring mechanism further comprises a second impeller, the second impeller is connected to the main shaft, arranged at an interval with the first impeller and arranged at the second part of the first cavity corresponding to the second side wall.

5. The filter of claim 3,

the stirring mechanism further comprises an elastic piece, and two opposite ends of the elastic piece are respectively connected with the main shaft and the first impeller.

6. The filter according to claim 3 or 5,

the stirring mechanism further comprises a supporting plate and a supporting rod, one end of the supporting plate is connected with the first impeller, the other end, far away from the first impeller, of the supporting plate forms a long hole, and the supporting rod penetrates through the long hole and is buckled with the supporting plate.

7. The filter according to any one of claims 3-5,

the filter further comprises a power assembly, the power assembly comprises a motor and an output shaft connected with the motor, the output shaft is connected with the spindle, when the motor drives the output shaft to rotate, the output shaft drives the spindle to rotate, and the spindle drives the first impeller and the scraper to rotate relative to the filter screen.

8. The filter of claim 1,

the filter still includes first promotion subassembly, first promotion subassembly includes power unit, telescopic link and first cantilever, the telescopic link is connected power unit, the relative both ends of first cantilever are connected respectively the telescopic link with filter element group spare power unit drive during telescopic link concertina movement, the telescopic link drives first cantilever is relative the casing is kept away from or is close to the motion, first cantilever drives filter element group spare is relative the casing is kept away from or is close to the motion.

9. The filter of claim 1,

the filter still includes the second hoisting component, the second hoisting component includes ratchet, worm, guide nut, first wear-resisting cover, the wear-resisting cover of second and second cantilever, ratchet connects first wear-resisting cover, the relative both ends of worm are overlapped respectively and are located first wear-resisting cover with the wear-resisting cover of second, the guide nut cover is established the worm, and the butt in the wear-resisting cover of second towards a side of first wear-resisting cover, the relative both ends of second cantilever are connected respectively the wear-resisting cover of second and filter element group spare, wherein ratchet drives first wear-resisting cover is relative when the wear-resisting cover of second is rotatory, first wear-resisting cover with the wear-resisting cover of second drives the worm is rotatory, the worm drives guide nut is close to along the helix direction first wear-resisting cover motion, guide nut drives the wear-resisting cover of second is kept away from first wear-resisting cover motion, the wear-resisting cover of second drives the second cantilever is kept away from first wear-resisting cover motion, the second cantilever drives the filter element group spare is kept away from the casing motion.

10. The filter of any one of claims 1-5,

the filter further comprises a controller, wherein the controller is connected with the first power valve and the second power valve, the controller sends control signals to the first power valve and the second power valve at intervals of a first time length, so that the first power valve is switched from an open state to a closed state and is maintained for a second time length, the second power valve is switched from the closed state to the open state and is maintained for the second time length, and the second time length is smaller than the first time length.

Images