CN110420852B

CN110420852B - Pulping and papermaking sizing material recovery treatment process

Info

Publication number: CN110420852B
Application number: CN201910721359.0A
Authority: CN
Inventors: 占正奉; 李聪定; 宋杰; 舒志云; 邬建明; 陈剑锋
Original assignee: Shanying International Holding Co Ltd
Current assignee: Shanying International Holding Co Ltd
Priority date: 2019-08-06
Filing date: 2019-08-06
Publication date: 2020-10-27
Anticipated expiration: 2039-08-06
Also published as: CN110420852A

Abstract

The invention discloses a pulping and papermaking sizing material recycling process, which comprises the following steps: firstly, separating the rubber materials stored in a rubber material storage barrel through a rubber material first-stage sieve, and directly using good rubber for a gluing machine; secondly, feeding residue rubber obtained by the primary screening separation of the rubber material and return rubber generated by a gluing machine into a filtering and deslagging mechanism for separation, and collecting heavy residues in a residue collecting tank; and thirdly, vibrating and screening the pre-fine glue obtained by the filtering and deslagging mechanism, collecting light slag in a paper wool collecting tank, and collecting the fine glue in a glue stock storage barrel. In the process of recycling the sizing material, the filtering and deslagging mechanism is added before the vibrating screen to separate heavy slag, so that the heavy slag can be removed, and the light slag mainly composed of paper wool is removed through the vibrating screen, so that the light slag can be recycled, the cleanliness of the sizing material is greatly improved, the service lives of the scraping rod, the sizing roller and the vibrating screen are prolonged, and the cost is reduced.

Description

Pulping and papermaking sizing material recovery treatment process

Technical Field

The invention belongs to the technical field of papermaking, and particularly relates to a pulping and papermaking sizing material recycling process.

Background

The existing PM6 paper machine production line mainly produces T paper of liner box board paper, the raw material mainly comprises waste paper, the quality of the waste paper is poor, the quantity of paper hair is large, the paper hair flows back into a glue circulating system along with glue of a glue applicator, so that the glue of the circulating system is easy to be dirty, and the glue needs to be treated. The existing rubber material backflow treatment only has one square vibrating screen, the treatment effect is still not ideal, light impurities and heavy impurities in the rubber material cannot be separated, the rubber material is more and more dirty in circulation, the service life of a scraping rod is short after the scraping rod is applied to a sizing machine, and the cost is increased.

Chinese patent application with patent number CN201821570581.2 discloses a rubber material recovery purifier for ivory board, through the inlet pipe feeding, starter motor, drive stirring piece and rotate, make rubber material and thick liquids intensive mixing, and smash the large granule rubber material, after stirring fully to the right pulling kiss plate, discharge orifice and through-hole coincidence, the thick liquids infiltration, through the water conservancy diversion ring, thick liquids flow down, through primary screen cloth and smart screen cloth, make the large granule rubber material just leave over on primary screen cloth and smart screen cloth, thereby realize the purification of rubber material. The recovery purification device only carries out static purification on the sizing material and has the defects of insufficient separation and unobvious purification effect.

Disclosure of Invention

The invention aims to provide a process for recycling sizing material for pulping and papermaking, which is characterized in that a filtering and deslagging mechanism is added before a vibrating screen to separate heavy slag, so that the heavy slag can be removed, and light slag mainly comprising paper wool is removed through the vibrating screen, so that the light slag can be recycled, the cleanliness of the sizing material is greatly improved, the service lives of a scraping rod, a sizing roller and the vibrating screen are prolonged, and the cost is reduced.

The purpose of the invention can be realized by the following technical scheme:

a pulping and papermaking sizing material recycling process comprises the following steps:

firstly, separating the rubber material stored in a rubber material storage barrel through a rubber material first-stage sieve to obtain good rubber and residual rubber, wherein the good rubber is directly used for a gluing machine;

secondly, the residue glue obtained by the first-stage screening separation of the glue material and the return glue generated by the gluing machine enter a filter box body of a filtering and deslagging mechanism, a first motor and a second motor are started simultaneously, pre-fine glue and heavy slag are obtained through the separation effect of the filtering and deslagging mechanism, the heavy slag is left on a first filter plate and a second filter plate, and the heavy slag is collected in a sediment collection tank;

and thirdly, performing vibration screening treatment on the pre-good glue obtained by the filtering and deslagging mechanism, separating to obtain good glue and light slag, collecting the light slag in a paper wool collecting tank, and collecting the good glue in a glue material storage barrel for next gluing.

Furthermore, the filtering and deslagging mechanism adopted in the second step comprises a bearing device, a linkage device and a filtering device, wherein the linkage device and the filtering device are both arranged on the bearing device;

the bearing device comprises a bearing bottom plate, wherein two parallel sliding grooves are formed in the surface of the bearing bottom plate along the width direction, two first supporting vertical plates which are arranged oppositely are fixed at the edge position of the surface of the bearing bottom plate, and a first circular through hole is formed in the surface of each first supporting vertical plate;

the linkage device comprises two linkage bodies which are oppositely arranged, each linkage body comprises two first rotating discs, a second rotating disc and six connecting rods, the second rotating discs are arranged between the two first rotating discs, one first rotating disc is arranged on the bearing device, and the other first rotating disc is arranged on the filtering device;

the filtering device comprises a supporting framework, a filtering box body, an elastic mechanism and a stirring rod, wherein the filtering box body, the elastic mechanism and the stirring rod are all arranged on the supporting framework;

the supporting framework comprises a quadrilateral frame body, two sliding plates which are arranged oppositely are fixed at the edge position of the lower surface of the quadrilateral frame body, and the sliding plates are slidably arranged in a sliding chute of the bearing bottom plate; two second supporting vertical plates which are oppositely arranged are fixed at the edge position of the upper surface of the quadrangular frame body, a square window is arranged on the surface of each second supporting vertical plate, strip-shaped grooves are formed in two side walls of the square window, and spring mounting grooves are formed in the upper wall and the lower wall of the square window; a connecting shaft is movably mounted on the outer side surface of the second supporting vertical plate, the connecting shaft is fixedly connected with the mounting cylinder, and a disc is fixed on the connecting shaft; an inverted U-shaped frame is fixed on the upper surface of the quadrangular frame body, and the stirring rod is arranged on the inverted U-shaped frame in a penetrating mode;

the inner side surface of the filter box body is sequentially provided with a first filter plate and a second filter plate from top to bottom; the lower end of the filtering box body is fixed with a mounting rod through a connecting plate;

the elastic mechanism comprises a sliding block, convex strips are fixed on the surfaces of two sides of the sliding block and are in sliding fit with strip-shaped grooves, springs are fixed on the upper surface and the lower surface of the sliding block, one end of each spring is fixed on the surface of the sliding block, and the other end of each spring is fixed in a spring mounting groove; the surface of the sliding block is provided with a mounting hole, and the mounting rod is fixed on the sliding block through the mounting hole; and the outer side surface of the sliding block is fixedly provided with a top block, and the top block is in contact fit with the disc.

Furthermore, three first stand columns are fixed on the surface of one side of the first rotary table, the three first stand columns are uniformly distributed on the surface of the first rotary table along the circumferential direction, the first stand columns are movably connected with the connecting rod, an installation cylinder is fixed at the center of the surface of the other side of the first rotary table, the installation cylinder on the surface of one first rotary table is installed on the first supporting vertical plate in a penetrating mode through the first circular through hole, the installation cylinder is installed on the first supporting vertical plate through a bearing, and the installation cylinder is connected with a first motor.

Furthermore, three second upright posts are fixed on the surfaces of two sides of the second turntable and are respectively and movably connected with the other end of the connecting rod.

Furthermore, two lugs which are mutually 180 degrees are fixed on the peripheral side of the disc.

Further, the aperture of the first filter plate is larger than that of the second filter plate.

The invention has the beneficial effects that:

in the process of recycling the sizing material, the filtering and deslagging mechanism is added before the vibrating screen to separate heavy slag, so that the heavy slag can be removed, and the light slag mainly comprising paper wool is removed through the vibrating screen, so that the light slag can be recycled, the cleanliness of the sizing material is greatly improved, the service lives of the scraping rod, the glue applying roller and the vibrating screen are prolonged, and the cost is reduced;

the invention adopts a specially-made filtering and deslagging mechanism to separate heavy slag from rubber materials, one first motor drives the first rotary table to rotate, under the transmission action of a connecting rod and a second rotary table and the limiting action of a support framework, the other first rotary table rotates and moves along the direction of a chute at the same time of rotating, so as to drive the support framework to slide back and forth along the direction of the chute, meanwhile, the rotation of the first rotary table drives a connecting shaft to rotate, so as to drive the disc to rotate, when a lug on the disc is contacted with a top block, the slide block can be pushed upwards through contact fit, when the lug is not contacted with the top block, the slide block can descend under the action of gravity, so as to realize reciprocating up and down movement, under the buffer action of a spring, the elastic up and down movement is realized, so that a filtering box body fixed on the support framework and the slide block not only does reciprocating movement along the direction of the chute under the driving action of the first, and do reciprocating motion in the vertical direction;

when the filter box is used, residue rubber obtained through rubber material one-stage screening separation and returned rubber generated by a gluing machine enter the filter box body of the filtering and deslagging mechanism together, a first motor and a second motor are started simultaneously, the first motor drives the whole filter box body to reciprocate along the vertical direction and the sliding groove direction, and the second motor drives a stirring rod to stir a rubber material mixture entering the filter box body, so that separation of pre-refined rubber and heavy slag is realized;

the filtering and deslagging mechanism adopted by the invention realizes the reciprocating movement of the filtering box body in the horizontal direction and the vertical direction through the linkage mechanism, and for a relatively viscous filtering object, namely a sizing material, impurities such as heavy slag in the sizing material can be separated from the sizing material through the form, so that the filtering efficiency is improved; moreover, through the arrangement of the two filter plates, relatively large-particle impurities are filtered out through the filter plate with a larger aperture, and then small-particle impurities are filtered out through the filter plate with a smaller aperture, so that the filtering efficiency can be effectively improved on the premise of ensuring that target particles are removed; on the other hand, the rubber mixture is continuously stirred by the stirring rod, rubber can be uniformly spread, the rubber can be prevented from being accumulated at the first filter plate to influence filtration, the flowability of the rubber can be improved, and the filtration efficiency is improved; the pre-fine rubber obtained after being filtered by the filter residue device has high cleanliness, and the recovery quality of the rubber material can be effectively improved.

Drawings

In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic flow diagram of a pulping and papermaking sizing material recycling process according to the present invention;

FIG. 2 is a schematic structural diagram of a filtering and deslagging mechanism of the invention;

FIG. 3 is a partial structure diagram of the filtering and deslagging mechanism of the invention;

FIG. 4 is a schematic view of a portion of the structure of FIG. 3;

FIG. 5 is a schematic view of a portion of the structure of FIG. 3;

FIG. 6 is a schematic structural diagram of a filtering device of the filtering and deslagging mechanism of the invention;

FIG. 7 is a schematic view of a portion of the structure of FIG. 6;

FIG. 8 is a schematic view of a portion of the structure of FIG. 6;

FIG. 9 is a schematic view of a portion of the structure of FIG. 6;

fig. 10 is a partial structural view of fig. 6.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, 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 invention.

A process for recycling a size in pulping and papermaking, as shown in fig. 1, comprising the steps of:

secondly, the residue rubber obtained by the rubber material primary screening and separation and the return rubber generated by the gluing machine enter the filtering box body 32 of the filtering and deslagging mechanism, the first motor and the second motor are started at the same time, the pre-fine rubber and the heavy slag are obtained through the separation effect of the filtering and deslagging mechanism, the heavy slag is left on the first filter plate 3201 and the second filter plate 3202, and the heavy slag is collected in a sediment collecting tank;

thirdly, the pre-good glue obtained by the filtering and deslagging mechanism is subjected to vibration screening treatment, good glue and light slag are obtained through separation, the light slag is collected in a paper wool collecting tank, and the good glue is collected in a glue material storage barrel for next gluing;

the heavy and light impurities in the generated returned rubber can be better and respectively treated after the rubber is used by the sizing machine, the heavy impurities mainly comprise sand, and the sand cannot be well separated from the rubber at the vibration sieve, so that the sand in the rubber circulates in a system, and a scraping rod, a sizing roller and the vibration sieve are abraded;

the heavy slag can be removed by adding a group of filtering and deslagging mechanisms in front of the vibrating screen, the light slag mainly composed of paper wool is removed by the vibrating screen, the light slag can be recycled, the cleanliness of the rubber material is greatly improved, the service life of a scraping rod, a glue applying roller and the vibrating screen is prolonged, and the cost is reduced;

referring to fig. 2-10, the filtering and deslagging mechanism, as shown in fig. 2, includes a carrying device 1, a linkage device 2 and a filtering device 3, wherein the linkage device 2 and the filtering device 3 are both mounted on the carrying device 1;

as shown in fig. 3, the carrying device 1 includes a carrying base plate 11, two parallel sliding grooves 12 are formed on the surface of the carrying base plate 11 along the width direction, two first supporting vertical plates 13 arranged oppositely are fixed at the edge position of the surface of the carrying base plate 11, and first circular through holes are formed on the surface of the first supporting vertical plates 13;

as shown in fig. 3, 4 and 5, the linkage device 2 includes two linkage bodies arranged oppositely, each linkage body includes two first rotary discs 21, one second rotary disc 22 and six connecting rods 23, the second rotary disc 22 is installed between the two first rotary discs 21, one first rotary disc 21 is installed on the bearing device 1, and the other first rotary disc 21 is installed on the filtering device 3; specifically, three first upright posts 2102 are fixed on one side surface of the first rotating disc 21, preferably, the three first upright posts 2102 are uniformly distributed on the surface of the first rotating disc 21 along the circumferential direction, the first upright posts 2102 are movably connected with a connecting rod 23, an installation cylinder 2101 is fixed at the center position of the other side surface, the installation cylinder 2101 on one surface of the first rotating disc 21 is installed on the first supporting vertical plate 13 in a penetrating mode through a first circular through hole, the installation cylinder 2101 is installed on the first supporting vertical plate 13 through a bearing, and the installation cylinder 2101 is connected with a first motor; the two side surfaces of the second rotary disc 22 are respectively fixed with three second upright columns 2201, and the three second upright columns 2201 are respectively movably connected with the other end of the connecting rod 23;

as shown in fig. 6, the filtering apparatus 3 includes a supporting framework 31, a filtering box 32, an elastic mechanism 33 and a stirring rod 34, wherein the filtering box 32, the elastic mechanism 33 and the stirring rod 34 are all mounted on the supporting framework 31;

as shown in fig. 7, the supporting structure 31 includes a quadrilateral frame 3101, two sliding plates 3102 are fixed at the edge position of the lower surface of the quadrilateral frame 3101, and the sliding plates 3102 are slidably mounted in the sliding grooves 12 of the bearing bottom plate 11; two second supporting vertical plates 3103 which are oppositely arranged are fixed at the edge position of the upper surface of the quadrangular frame body 3101, a square window 3104 is arranged on the surface of the second supporting vertical plate 3103, strip-shaped grooves 3105 are arranged on two side walls of the square window 3104, and spring mounting grooves 3106 are arranged on the upper wall and the lower wall of the square window 3104; a connecting shaft 3107 is movably mounted on the outer side surface of the second supporting vertical plate 3103, the connecting shaft 3107 can freely rotate on the second supporting vertical plate 3103, the connecting shaft 3107 is fixedly connected with the mounting cylinder 2102 to realize the connection between the first rotating disc 21 and the filtering device 3, a disc 3108 is fixed on the connecting shaft 3107, and specifically, two convex blocks which form an angle of 180 degrees with each other are fixed on the peripheral side of the disc 3108; an inverted U-shaped frame 3109 is fixed on the upper surface of the quadrangular frame 3101, the stirring rod 34 is penetratingly mounted on the inverted U-shaped frame 3109, and the end side of the stirring rod 34 is connected with a second motor;

as shown in fig. 8, the inner side surface of the filter box 32 is provided with a first filter plate 3201 and a second filter plate 3202 in sequence from top to bottom, preferably, the aperture of the first filter plate 3201 is larger than that of the second filter plate 3202; a mounting rod 3204 is fixed to the lower end of the filter box 32 through a connecting plate 3203; the paddle portion of the agitator bar 34 is located within the filter box 32 and above the first filter plate 3201;

as shown in fig. 10, the elastic mechanism 33 includes a slider 3301, a convex strip 3302 is fixed on both side surfaces of the slider 3301, the convex strip 3302 is slidably engaged with a strip-shaped groove 3105, a spring 3303 is fixed on the upper and lower surfaces of the slider 3301, one end of the spring 3303 is fixed on the surface of the slider 3301, and the other end is fixed in a spring mounting groove 3106; the surface of the sliding block 3301 is provided with a mounting hole 3304, and the mounting rod 3204 is fixed on the sliding block 3301 through the mounting hole 3304; a top block 3305 is fixed on the outer side surface of the sliding block 3301, and the top block 3305 is in contact fit with the circular disc 3108;

the working principle and the mode of the filtering and deslagging mechanism are as follows:

regarding the linkage mechanism: the first rotating disc 21 installed on the first installation vertical plate 13 is connected with a first motor, in the process that the first motor drives the first rotating disc 21 to rotate, under the transmission action of the connecting rod 23 and the second rotating disc 22, theoretically, the other first rotating disc 21 rotates and also rotates in a revolution manner, but the installation cylinder 2101 on the first rotating disc 21 is fixedly connected with the connecting shaft 3107, under the limiting action, the first rotating disc 21 converts the revolution movement into a moving movement along the direction of the sliding chute 12, so as to drive the supporting framework 31 to slide back and forth along the direction of the sliding chute 12, meanwhile, the rotation of the first rotating disc 21 drives the connecting shaft 3107 to rotate, so as to drive the disc 3108 to rotate, when a lug on the disc 3108 is in contact with the jacking block 3305, the sliding block 3301 is jacked upwards through contact fit, and when the lug is not in contact with the jacking block 3305, under the action of gravity, the sliding block 3301 descends, the reciprocating up-and-down movement is realized, and the elastic up-and-down movement is realized under the buffer action of the spring 3303, so that the filtering box body 32 fixed on the supporting framework 31 and the sliding block 3301 does not only do reciprocating movement along the sliding chute 12 direction, but also do reciprocating movement in the vertical direction under the driving of the first motor;

when the filter box is used, residue rubber obtained by rubber material one-stage screening separation and returned rubber generated by a gluing machine enter the filter box body 32 of the filter deslagging mechanism together, a first motor and a second motor are started simultaneously, the first motor drives the whole filter box body 32 to reciprocate along the vertical direction and the direction of the chute 12, and the second motor drives the stirring rod 34 to stir a rubber material mixture entering the filter box body 32, so that separation of pre-fine rubber and heavy slag is realized;

the filtering and deslagging mechanism realizes the reciprocating movement of the filtering box body in the horizontal direction and the vertical direction through the linkage mechanism, and impurities such as heavy slag in the sizing material can be separated from the sizing material through the form of the relatively viscous filtering object such as the sizing material, so that the filtering efficiency is improved; moreover, through the arrangement of the two filter plates, relatively large-particle impurities are filtered out through the filter plate with a larger aperture, and then small-particle impurities are filtered out through the filter plate with a smaller aperture, so that the filtering efficiency can be effectively improved on the premise of ensuring that target particles are removed; on the other hand, the rubber mixture is continuously stirred by the stirring rod, rubber can be uniformly spread, the rubber can be prevented from being accumulated at the first filter plate to influence filtration, the flowability of the rubber can be improved, and the filtration efficiency is improved; the pre-fine rubber obtained after being filtered by the filter residue device has high cleanliness, and the recovery quality of the rubber material can be effectively improved.

Examples

Sizing material of a certain paper mill is processed by the following steps:

Comparative example 1

The filtration residue removal mechanism in example 1 was replaced with a normal residue remover.

Comparative example 2

The second step in example 1 was eliminated, i.e. the size was treated with a vibrating sieve only.

The recovered compounds treated in the examples and comparative examples 1-2 were tested for heavy and light impurity levels and the results are shown in the following table:

	examples	Comparative example 1	Comparative example 2
				Heavy impurities/%)	0.18	1.02	3.24
Light impurities/%	0.19	0.38	1.56

It can be seen that the content of heavy impurities in the rubber material obtained in the example is 0.08%, and the content of light impurities is 0.05%, compared with the comparative example 1, it is shown that the filtering and deslagging mechanism of the invention has higher capacity of removing heavy slag and high deslagging efficiency compared with the traditional deslagging device; compared with the comparative example 2, the method has the advantage that the cleanliness of the sizing material can be effectively improved by removing heavy impurities from the sizing material before the vibrating screen.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A pulping and papermaking sizing material recycling process is characterized by comprising the following steps:

secondly, the residue rubber obtained by the rubber material primary screening and separation and the return rubber generated by the gluing machine enter a filtering box body (32) of a filtering and deslagging mechanism together, a first motor and a second motor are started simultaneously, pre-fine rubber and heavy slag are obtained through the separation effect of the filtering and deslagging mechanism, the heavy slag is left on a first filter plate (3201) and a second filter plate (3202), and the heavy slag is collected in a sediment collecting tank;

in the second step, the filtering and deslagging mechanism comprises a bearing device (1), a linkage device (2) and a filtering device (3), wherein the linkage device (2) and the filtering device (3) are both arranged on the bearing device (1);

the bearing device (1) comprises a bearing bottom plate (11), two parallel sliding grooves (12) are formed in the surface of the bearing bottom plate (11) along the width direction, two first supporting vertical plates (13) which are arranged oppositely are fixed at the edge position of the surface of the bearing bottom plate (11), and a first circular through hole is formed in the surface of each first supporting vertical plate (13);

the linkage device (2) comprises two linkage bodies which are oppositely arranged, each linkage body comprises two first rotating discs (21), a second rotating disc (22) and six connecting rods (23), the second rotating discs (22) are installed between the two first rotating discs (21), one first rotating disc (21) is installed on the bearing device (1), and the other first rotating disc (21) is installed on the filtering device (3);

the filtering device (3) comprises a supporting framework (31), a filtering box body (32), an elastic mechanism (33) and a stirring rod (34), wherein the filtering box body (32), the elastic mechanism (33) and the stirring rod (34) are all arranged on the supporting framework (31);

the supporting framework (31) comprises a quadrilateral frame body (3101), two sliding plates (3102) which are oppositely arranged are fixed at the edge position of the lower surface of the quadrilateral frame body (3101), and the sliding plates (3102) are slidably arranged in a sliding groove (12) of a bearing bottom plate (11); two second supporting vertical plates (3103) which are oppositely arranged are fixed at the edge position of the upper surface of the quadrangular frame body (3101), a square window (3104) is arranged on the surface of each second supporting vertical plate (3103), strip-shaped grooves (3105) are arranged on two side walls of each square window (3104), and spring mounting grooves (3106) are arranged on the upper wall and the lower wall of each square window (3104); a connecting shaft (3107) is movably mounted on the outer side surface of the second supporting vertical plate (3103), the connecting shaft (3107) is fixedly connected with the mounting cylinder (2102), and a disc (3108) is fixed on the connecting shaft (3107); an inverted U-shaped frame (3109) is fixed on the upper surface of the quadrangular frame body (3101), and the stirring rod (34) is installed on the inverted U-shaped frame (3109) in a penetrating way;

the inner side surface of the filtering box body (32) is sequentially provided with a first filtering plate (3201) and a second filtering plate (3202) from top to bottom; a mounting rod 3204 is fixed at the lower end of the filtering box body 32 through a connecting plate 3203;

the elastic mechanism (33) comprises a sliding block (3301), convex strips (3302) are fixed on the surfaces of two sides of the sliding block (3301), the convex strips (3302) are in sliding fit with the strip-shaped grooves (3105), springs (3303) are fixed on the upper surface and the lower surface of the sliding block (3301), one end of each spring (3303) is fixed on the surface of the sliding block (3301), and the other end of each spring (3303) is fixed in the spring mounting groove (3106); the surface of the sliding block (3301) is provided with a mounting hole (3304), and the mounting rod (3204) is fixed on the sliding block (3301) through the mounting hole (3304); and a top block (3305) is fixed on the outer side surface of the sliding block (3301), and the top block (3305) is in contact fit with the disc (3108).

2. The process for recycling pulping and papermaking sizing materials according to claim 1, wherein three first upright posts (2102) are fixed on one side surface of the first rotating disc (21), the three first upright posts (2102) are uniformly distributed on the surface of the first rotating disc (21) along the circumferential direction, the first upright posts (2102) are movably connected with a connecting rod (23), an installation cylinder (2101) is fixed on the center position of the other side surface, the installation cylinder (2101) on one surface of the first rotating disc (21) is installed on a first supporting vertical plate (13) through a first circular through hole in a penetrating mode, the installation cylinder (2101) is installed on the first supporting vertical plate (13) through a bearing, and the installation cylinder (2101) is connected with a first motor.

3. The process for recycling the sizing materials for pulping and papermaking according to claim 1, wherein three second upright columns (2201) are fixed on the surfaces of the two sides of the second rotating disc (22), and the three second upright columns (2201) are respectively movably connected with the other end of the connecting rod (23).

4. A process for recycling of size according to claim 1, characterized in that two lugs are fixed on the circumference of the disc (3108) at 180 ° to each other.

5. The process for recycling pulping and papermaking sizing according to claim 1, wherein the first filter plate (3201) has a larger pore size than the second filter plate (3202).