CN108706796A

CN108706796A - A kind of electroplating waste processing process

Info

Publication number: CN108706796A
Application number: CN201810533156.4A
Authority: CN
Inventors: 向伟; 郭之博
Original assignee: Suzhou Yu Yu Environmental Protection Technology Co Ltd
Current assignee: TAIZHOU LONGGOU ELECTROPLATING TECHNOLOGY Co.,Ltd.
Priority date: 2018-05-29
Filing date: 2018-05-29
Publication date: 2018-10-26
Anticipated expiration: 2038-05-29
Also published as: CN108706796B

Abstract

The present invention relates to field of waste water treatment, specifically a kind of electroplating waste processing process, for the technique using original system is gone back, it includes illumination mechanism, reaction mechanism, addition mechanism, rabbling mechanism, collection of products mechanism and cooling water pipe that this, which goes back original system,；By including illumination mechanism to water to be treated into the supplement of line light source, it is embodied as water to be treated by reaction mechanism and carries out light-catalyzed reaction, add addition of the mechanism realization to catalyst, rabbling mechanism is stirred catalyst, the whereabouts of catalyst is controlled simultaneously, convenient for collecting the product after reaction, cooling water pipe cools down to reaction for collection of products mechanism.The present invention is efficient and convenient without artificially being added according to water；It is carried out using the reaction tube of special construction when being reacted, increases the contact area with illumination, increased illumination using the principle of reflection by the reflector of rotation, improve the efficiency of catalysis；Product is collected using tremie pipe after completion of the reaction, reaches harmless treatment.

Description

A kind of electroplating waste processing process

Technical field

The present invention relates to field of waste water treatment, specifically a kind of electroplating waste processing process.

Background technology

Chromium and its change platform object be industrially widely used, metallurgy, chemical industry, mineral engineering, be electroplated, chromium processed, pigment, pharmacy, A series of industries such as the production of industry light industry textile industry, chromic salts and chromium compounds can all generate a large amount of chromate waste water, untreated to contain chromium If invading everybody body by alimentary canal, respiratory tract, skin and mucous membrane when waste water is drunk, while chromium compound is with steam and dust Mode enters in tissue, and the speed for being metabolized and being eliminated is slow, can cause under perforation of nasal septum, stomach illness, white blood cell The pulmonary lesion of drop, similar asthma.

Therefore the electroplating wastewater containing chromium is restored, the chromium product of reduction is recycled with important meaning Justice, photocatalysis make one of the important means of high concentration chrome wastewater processing, and existing catalysis system needs are artificial to be urged according to water The addition of agent, it is cumbersome, while needing to carry out salvaging processing, labor intensive to product.In consideration of it, the present invention provides one Kind electroplating waste processing process, has the characteristics that：

(1) a kind of electroplating waste processing process of the present invention, for the technique using original system is gone back, this goes back original system utilization The impulse force of water makes stirring blade rotate and then drives to draw bar rotation, and cover board can be pushed open when bar turns to top by, which drawing, makes fcc raw material Whereabouts enters in water, while being stirred using the stirring blade of rotation and ensure to be evenly distributed, and is stirred when the discharge of sewage is larger Mix the speed of blade rotation then faster, while it is faster to draw the frequency that bar rotation faster can be such that cover board is scratched, you can under more More catalyst carries out catalysis reaction, efficient and convenient without artificially being added according to water.

(2) a kind of electroplating waste processing process of the present invention, the technique using going back original system, this go back original system into It is carried out using the reaction tube of special construction when row reaction, can effectively increase the contact area with illumination, by rotatable anti- Tabula rasa increases illumination using the principle of reflection, improves the efficiency of catalysis.

(3) a kind of electroplating waste processing process of the present invention, for the technique using original system is gone back, this goes back original system anti- Product should be collected using tremie pipe after the completion, while the filtering of water is carried out to the product of collection and is air-dried, make remnants' Water continues to be reacted at water inlet pipe, reaches innoxious overall treatment.

Invention content

For the problems of the prior art, the present invention provides a kind of electroplating waste processing process, and the technique is using reduction System, this is gone back original system and includes supplement of the illumination mechanism to water to be treated into line light source by described, and the reaction is passed through Mechanism is embodied as water to be treated and carries out light-catalyzed reaction, and the addition mechanism realizes the addition to catalyst, the stirring Mechanism is stirred catalyst, while controlling the whereabouts of catalyst, and the collection of products mechanism is convenient for the production after collection reaction Object, the cooling water pipe cool down to reaction；So that the stirring blade is rotated using the impulse force of water and then drives described stroke of bar Rotation, described stroke of bar can push the cover board open when turning to top make fcc raw material whereabouts enter in water, while utilizing rotation The stirring blade turned, which is stirred, to be ensured to be evenly distributed, and the speed that the stirring blade rotates when the discharge of sewage is larger is then Faster, while the described stroke of bar rotation frequency that faster cover board can be made to be scratched is faster, you can lower more catalyst Catalysis reaction is carried out, it is efficient and convenient without artificially being added according to water；When being reacted using the reaction of special construction Pipe carries out, and can effectively increase the contact area with illumination, is increased using the principle of reflection by the rotatable reflector Illumination improves the efficiency of catalysis；Product is collected using the tremie pipe after completion of the reaction, while to the product of collection It carries out the filtering of water and air-dries, make remaining water continue to be reacted at water inlet pipe, reach innoxious overall treatment.

The technical solution adopted by the present invention to solve the technical problems is：A kind of electroplating waste processing process, the technique packet Include following steps：

Step 1：Electroplating wastewater is tentatively filtered by grille well；

Step 2：Filtered electroplating wastewater in step 1 is sent into homogeneous regulating reservoir, homogenization is carried out；

Step 3：Homogeneous in step 2 is adjusted treated electroplating wastewater feeding to go back in original system；

Step 4：By electroplating wastewater store collected in step 3, left concentratedly after filtration pressure filter press filtration；

Wherein, the original system of going back includes illumination mechanism, reaction mechanism, addition mechanism, rabbling mechanism, collection of products machine Structure and cooling water pipe；The addition mechanism is for being added the various catalyst of reaction, and the bottom of the addition mechanism It is connected to the rabbling mechanism of sewage stirring and transport；The bottom connection of the rabbling mechanism is light-catalysed described anti-for carrying out Answer mechanism, and the illumination mechanism that offer light source is provided of the reaction mechanism；The bottom of the reaction mechanism connects The collection of products mechanism of processing, and rabbling mechanism described in the collection of products mechanism connection are collected to product；It is described The inside of reaction mechanism is installed by the cooling water pipe.

Specifically, the addition mechanism includes hopper, hopper, inclined plate and discharging controller, opened at the top of the hopper If top hopper, and the inclined plate is fixed in the inside of the hopper；The bottom of the hopper opens up groove, and the groove is interior Portion opens up through-hole；The bottom of the through-hole is equipped with discharging controller.

Specifically, the discharging controller includes cover board, limiting plate, limiting slot and spring, the bottom of the hopper Place's mating connection cover board of the through-hole, and the limiting plate is fixed in the both sides of the cover board；The limiting plate engaging is simultaneously Be slidably connected the limiting slot, and the limiting slot is opened in the side of the groove；Between the limiting plate and the groove Equipped with the spring.

Specifically, the rabbling mechanism includes drawing bar, water inlet pipe, shaft, stirring blade and transferring box, the transferring box connects The logical bottom with the hopper, and the inner rotation of the transferring box connects the shaft；Described in the outside of the shaft is fixed Stirring blade, and described stroke of bar is fixed in one end of the shaft；The side of the transferring box is connected to the water inlet pipe.

Specifically, the bottom of water inlet pipe described in the stirring blade displacement, and the stirring blade is fixed on the shaft Side；The height of described stroke of bar of the shaft other side is identical to the distance between the through-hole as the shaft.

Specifically, the reaction mechanism includes outlet pipe, connecting tube, reaction tube and the first water pump, first water pump connects Lead to the bottom of the transferring box, and one end of first water pump connects the connecting tube；The connecting tube is connected to the reaction Pipe, and one end of the reaction tube connects the outlet pipe.

Specifically, the reaction tube uses "U" shaped structure, and through in the shape of a spiral at the inside center of the reaction tube The cooling water pipe.

Specifically, the illumination mechanism includes battery, link, reflector and lamp source；The lamp source is located at the reaction The inside of pipe, and the top of the lamp source connects the link；The battery, and the electricity are fixed in one end of the link Pond is electrically connected the lamp source；The both ends of the reaction tube are rotatablely connected the reflector.

Specifically, the width of the reflector is more than the spacing between the reaction tube inside, and the reflector and institute It is 0 ° -360 ° to state the rotation angle between reaction tube.

Specifically, the collection of products mechanism include solenoid valve, pulp-collecting box, radiator fan, tremie pipe, strainer, water storage box, The bottom of second water pump and circulating line, the reaction tube is connected to the inclined tremie pipe, the inside installation of the tremie pipe The solenoid valve, and the radiator fan is installed at the top of the tremie pipe；The bottom of the tremie pipe is equipped with the strainer, and The bottom of the strainer is connected to the water storage box；The inside of the water storage box is installed by second water pump, and second water pump It is connected to the water inlet pipe by the circulating line；The side of the tremie pipe is connected to the pulp-collecting box.

Beneficial effects of the present invention：

Description of the drawings

Present invention will be further explained below with reference to the attached drawings and examples.

Fig. 1 is a kind of structural schematic diagram of the preferred embodiment provided by the invention for going back original system；

Fig. 2 is the structural schematic diagram of discharging controller shown in FIG. 1；

Fig. 3 is the bottom surface structure schematic diagram of hopper shown in Fig. 2；

Fig. 4 is the structural schematic diagram of illumination mechanism shown in FIG. 1；

Fig. 5 is the structural schematic diagram of collection of products mechanism shown in FIG. 1.

In figure：1, illumination mechanism, 11, battery, 12, link, 13, reflector, 14, lamp source, 2, reaction mechanism, 21, go out Water pipe, 22, connecting tube, 23, reaction tube, the 24, first water pump, 3, addition mechanism, 31, hopper, 32, hopper, 321, through-hole, 322, Groove, 33, inclined plate, 34, discharging controller, 341, cover board, 342, limiting plate, 343, limiting slot, 344, spring, 4, blender Structure, 41, draw bar, 42, water inlet pipe, 43, shaft, 44, stirring blade, 45, transferring box, 5, collection of products mechanism, 51, solenoid valve, 52, pulp-collecting box, 53, radiator fan, 54, tremie pipe, 55, strainer, 56, water storage box, the 57, second water pump, 58, circulating line, 6, Cooling water pipe.

Specific implementation mode

In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below Specific implementation mode is closed, the present invention is further explained.

As shown in Figure 1, a kind of electroplating waste processing process of the present invention, the technique include the following steps：

Step 1：Electroplating wastewater is tentatively filtered by grille well；

Wherein, the original system of going back includes illumination mechanism 1, reaction mechanism 2, addition mechanism 3, rabbling mechanism 4, product receipts Collecting mechanism 5 and cooling water pipe 6；The addition mechanism 3 is for being added the various catalyst of reaction, and the addition mechanism The rabbling mechanism 4 of 3 bottom connection sewage stirring and transport；The bottom connection of the rabbling mechanism 4 is urged for carrying out light The reaction mechanism 2 changed, and the illumination mechanism 1 that offer light source is provided of the reaction mechanism 2；The reaction machine The bottom connection of structure 2 is collected product the collection of products mechanism 5 of processing, and the collection of products mechanism 5 is connected to institute State rabbling mechanism 4；The inside of the reaction mechanism 2 is installed by the cooling water pipe 6.

Specifically, as shown in Figure 1, the addition mechanism 3 includes hopper 31, hopper 32, inclined plate 33 and discharging controller 34, the top of the hopper 32 opens up top hopper 31, and the inclined plate 33 is fixed in the inside of the hopper 32；The hopper 32 Bottom open up groove 322, and the inside of the groove 322 opens up through-hole 321；The bottom of the through-hole 321 is equipped with discharging and controls Mechanism 34 processed carries out packaging to catalyst using the hopper 32, blanking is controlled using the discharging controller 34.

Specifically, as depicted in figs. 1 and 2, the discharging controller 34 includes cover board 341, limiting plate 342, limiting slot 343 and spring 344, the place of the through-hole 321 of the bottom of the hopper 32 is connected the cover board 341, and the cover board The limiting plate 342 is fixed in 341 both sides；The limiting plate 342 engages and the limiting slot 343 that is slidably connected, and the limit Position slot 343 is opened in the side of the groove 322；The spring 344 is equipped between the limiting plate 342 and the groove 322, In order to control the Quantitative dosing of catalyst.

Specifically, as shown in Figure 1, the rabbling mechanism 4 includes drawing bar 41, water inlet pipe 42, shaft 43,44 and of stirring blade Transferring box 45, the bottom of the transferring box 45 connection and the hopper 32, and described in the inner rotation connection of the transferring box 45 Shaft 43；The stirring blade 44 is fixed in the outside of the shaft 43, and described stroke of bar 41 is fixed in one end of the shaft 43；Institute The side for stating transferring box 45 is connected to the water inlet pipe 42, needs to be added to catalyst and is added to the hopper by the hopper 31 32 inside, makes the water inlet pipe 42 be communicated at wastewater inlet, when falling on when water enters on the stirring blade 44 It realizes and the stirring blade 44 is driven to rotate, the stirring blade 44 can drive the bar 41 of drawing to be rotated when rotated, Described stroke of bar 41 is when rotating to the bottom of the hopper 32, you can pressing the cover board 341, so that the cover board 341 is pressed described Spring 344 is pushed, and the through-hole 321 is made to be exposed, at this time catalyst can under the effect of gravity blanking enter it is described in The inside of turnning box 45 can be realized using the stirring blade 44 of rotation and is stirred to inside simultaneously.

Specifically, as shown in Figure 1, the bottom of water inlet pipe 42 described in 44 displacement of the stirring blade, and the stirring blade 44 are fixed on the side of the shaft 43；The height of described stroke of bar 41 of 43 other side of the shaft is with the shaft 43 described in The distance between through-hole 321 is identical, in order to carry out control blanking.

Specifically, as shown in Figure 1, the reaction mechanism 2 includes outlet pipe 21, connecting tube 22, reaction tube 23 and the first water Pump 24, first water pump 24 is connected to the bottom of the transferring box 45, and one end of first water pump 24 connects the connection Pipe 22；The connecting tube 22 is connected to the reaction tube 23, and one end of the reaction tube 23 connects the outlet pipe 21, has stirred The inside of the reaction tube 23 is entered by first water pump 24 at the water of rear addition catalyst,.

Specifically, as shown in Figure 1, the reaction tube 23 uses "U" shaped structure, and the inside center of the reaction tube 23 The spiral cooling water pipe 6 is run through at place, in order to increase irradiated area.

Specifically, as shown in Figure 1 and Figure 4, the illumination mechanism 1 includes battery 11, link 12, reflector 13 and lamp source 14；The lamp source 14 is located at the inside of the reaction tube 23, and the top of the lamp source 14 connects the link 12；The company The battery 11 is fixed in the one end for connecing frame 12, and the battery 11 is electrically connected the lamp source 14；The both ends of the reaction tube 23 It is rotatablely connected the reflector 13, opens the lamp source 14, rotating the reflector 13, so that the light of both sides is reflected to described anti- Should pipe 23 inside, carry out light-catalyzed reaction, and be passed through cooling water in the inside of the cooling water pipe 6 and realize and dissipated to whole Heat.

Specifically, as shown in Figure 1 and Figure 4, between the width of the reflector 13 is more than between 23 inside of the reaction tube Away from, and the rotation angle between the reflector 13 and the reaction tube 23 is 0 ° -360 °, for ease of increasing illumination by reflection Area.

Specifically, as shown in Figure 1 and Figure 5, the collection of products mechanism 5 includes solenoid valve 51, pulp-collecting box 52, radiator fan 53, the bottom connection of tremie pipe 54, strainer 55, water storage box 56, the second water pump 57 and circulating line 58, the reaction tube 23 tilts The tremie pipe 54, the solenoid valve 51 is installed in the inside of the tremie pipe 54, and institute is installed at the top of the tremie pipe 54 State radiator fan 53；The bottom of the tremie pipe 54 is equipped with the strainer 55, and the bottom of the strainer 55 is connected to the water storage Case 56；Second water pump 57 is installed in the inside of the water storage box 56, and second water pump 57 passes through the circulating line 58 It is connected to the water inlet pipe 42；The side of the tremie pipe 54 is connected to the pulp-collecting box 52, can open the solenoid valve 51, make reaction Reactant enters the pulp-collecting box by the tremie pipe 54 after object blanking filters out intermediate moisture by the strainer 55 52 inside, while second water pump 57 can be opened internal water can be passed into the water inlet by the circulating line Inside pipe 42, in order to carry out reaction treatment again.

By it is described include illumination mechanism 1 to water to be treated into the supplement of line light source, it is real to pass through the reaction mechanism 2 It is now water to be treated progress light-catalyzed reaction, addition of the addition mechanism 3 realization to catalyst, the rabbling mechanism 4, Catalyst is stirred, while controlling the whereabouts of catalyst, the collection of products mechanism 5 is convenient for collecting the product after reaction, The cooling water pipe 6 cools down to reaction；Specifically have：

(1) inside that will need to be added to catalyst by the hopper 31 and be added to the hopper 32, makes the water inlet Pipe 42 is communicated at wastewater inlet, be can be realized when falling on when water enters on the stirring blade 44 and is driven the stirring blade 44 rotations, the stirring blade 44 can drive the bar 41 of drawing to be rotated when rotated, and described stroke of bar 41 is rotating to When stating the bottom of hopper 32, you can press the cover board 341 cover board 341 is made to press the spring 344 and pushed, made described Through-hole 321 is exposed, and catalyst blanking can enter the inside of the transferring box 45 under the effect of gravity at this time, utilize rotation The stirring blade 44 can realize inside is stirred simultaneously.

(2) water of addition catalyst is entered by first water pump 24 in the reaction tube 23 after the completion of stirring Portion opens the lamp source 14 at this time, rotates the inside that the reflector 13 makes the light of both sides be reflected to the reaction tube 23, into Row light-catalyzed reaction, and be passed through cooling water in the inside of the cooling water pipe 6 and realize and radiate to whole, reaction a period of time Afterwards, you can open the solenoid valve 51, so that reactant blanking is passed through reactant after the strainer 55 filters out intermediate moisture logical The inside that the tremie pipe 54 enters the pulp-collecting box 52 is crossed, while can open second water pump 57 can be by internal water It is passed into inside the water inlet pipe 42 by the circulating line, in order to carry out reaction treatment again.

The present invention makes the stirring blade 44 rotate and then the bar 41 of drawing is driven to rotate using the impulse force of water, described stroke of bar 41 can push the cover board 341 open when turning to top make fcc raw material whereabouts enter in water, while utilizing the described of rotation Stirring blade 44, which is stirred, to be ensured to be evenly distributed, and the speed that the stirring blade 44 rotates when the discharge of sewage is larger is then more Soon, while the described stroke of bar 41 rotation frequency that faster cover board 341 can be made to be scratched is faster, you can lower more catalysis Agent carries out catalysis reaction, efficient and convenient without artificially being added according to water；When being reacted using the described anti-of special construction Should pipe 23 carry out, can effectively increase the contact area with illumination, by the rotatable reflector 13 using reflection original Reason increases illumination, improves the efficiency of catalysis；Product is collected using the tremie pipe 54 after completion of the reaction, while to receiving The product of collection carries out the filtering of water and air-dries, and makes remaining water continue to be reacted at the water inlet pipe 42, reaches harmless The overall treatment of change.

The basic principles, main features and advantages of the invention have been shown and described above.The technical staff of the industry should Understand, the present invention is not limited to the above embodiments, and the description in the above embodiment and specification only illustrates the present invention Principle, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these variation and Improvement is both fallen in the scope of protection of present invention.The claimed scope of the invention is by appended claims and its equivalent Object defines.

Claims

1. a kind of electroplating waste processing process, which is characterized in that the technique includes the following steps：

Step 1：Electroplating wastewater is tentatively filtered by grille well；

Wherein, the original system of going back includes illumination mechanism (1), reaction mechanism (2), addition mechanism (3), rabbling mechanism (4), production Object collecting mechanism (5) and cooling water pipe (6)；The addition mechanism (3) is for being added the various catalyst of reaction, and institute State the rabbling mechanism (4) of bottom connection the sewage stirring and transport of addition mechanism (3)；The bottom of the rabbling mechanism (4) Connection is for carrying out the light-catalysed reaction mechanism (2), and being internally provided with for the reaction mechanism (2) provides the described of light source Illumination mechanism (1)；The bottom connection of the reaction mechanism (2) is collected product the collection of products mechanism (5) of processing, And the collection of products mechanism (5) is connected to the rabbling mechanism (4)；The inside of the reaction mechanism (2) is installed by the cooling water It manages (6).

2. a kind of electroplating waste processing process according to claim 1, it is characterised in that：The addition mechanism (3) includes Hopper (31), hopper (32), inclined plate (33) and discharging controller (34) open up top hopper at the top of the hopper (32) (31), and the inclined plate (33) is fixed in the inside of the hopper (32)；The bottom of the hopper (32) opens up groove (322), and The inside of the groove (322) opens up through-hole (321)；The bottom of the through-hole (321) is equipped with discharging controller (34).

3. a kind of electroplating waste processing process according to claim 2, it is characterised in that：The discharging controller (34) Including cover board (341), limiting plate (342), limiting slot (343) and spring (344), the through-hole of the bottom of the hopper (32) (321) place's mating connection cover board (341), and the limiting plate (342) is fixed in the both sides of the cover board (341)；It is described Limiting plate (342) engages and the limiting slot (343) that is slidably connected, and the limiting slot (343) is opened in the groove (322) Side；The spring (344) is equipped between the limiting plate (342) and the groove (322).

4. a kind of electroplating waste processing process according to claim 2, it is characterised in that：The rabbling mechanism (4) includes Draw bar (41), water inlet pipe (42), shaft (43), stirring blade (44) and transferring box (45), transferring box (45) connection and institute The bottom of hopper (32) is stated, and the inner rotation of the transferring box (45) connects the shaft (43)；Outside the shaft (43) The stirring blade (44) is fixed in side, and described stroke of bar (41) is fixed in one end of the shaft (43)；The transferring box (45) Side is connected to the water inlet pipe (42).

5. a kind of electroplating waste processing process according to claim 4, it is characterised in that：Stirring blade (44) displacement The bottom of the water inlet pipe (42), and the stirring blade (44) is fixed on the side of the shaft (43)；The shaft (43) The height of described stroke of bar (41) of the other side is identical as the distance between the shaft (43) to the through-hole (321).

6. a kind of electroplating waste processing process according to claim 4, it is characterised in that：The reaction mechanism (2) includes Outlet pipe (21), connecting tube (22), reaction tube (23) and the first water pump (24), first water pump (24) are connected to the transferring box (45) bottom, and one end of first water pump (24) connects the connecting tube (22)；Described in connecting tube (22) connection Reaction tube (23), and one end of the reaction tube (23) connects the outlet pipe (21).

7. a kind of electroplating waste processing process according to claim 6, it is characterised in that：The reaction tube (23) uses "U" shaped structure, and run through the spiral cooling water pipe (6) at the inside center of the reaction tube (23).

8. a kind of electroplating waste processing process according to claim 1, it is characterised in that：The illumination mechanism (1) includes Battery (11), link (12), reflector (13) and lamp source (14)；The lamp source (14) is located at the interior of the reaction tube (23) Portion, and the top of the lamp source (14) connects the link (12)；The battery is fixed in one end of the link (12) (11), and the battery (11) is electrically connected the lamp source (14)；The both ends rotation connection of the reaction tube (23) is described reflective Plate (13).

9. a kind of electroplating waste processing process according to claim 8, it is characterised in that：The width of the reflector (13) More than the spacing between the reaction tube (23) inside, and the rotation angle between the reflector (13) and the reaction tube (23) Degree is 0 ° -360 °.

10. a kind of electroplating waste processing process according to claim 6, it is characterised in that：The collection of products mechanism (5) Including solenoid valve (51), pulp-collecting box (52), radiator fan (53), tremie pipe (54), strainer (55), water storage box (56), the second water (57) and circulating line (58) are pumped, the bottom of the reaction tube (23) is connected to the inclined tremie pipe (54), the tremie pipe (54) solenoid valve (51) is installed in inside, and the radiator fan (53) is installed at the top of the tremie pipe (54)；It is described The bottom of tremie pipe (54) is equipped with the strainer (55), and the bottom of the strainer (55) is connected to the water storage box (56)；It is described Second water pump (57) is installed in the inside of water storage box (56), and second water pump (57) is connected by the circulating line (58) Lead to the water inlet pipe (42)；The side of the tremie pipe (54) is connected to the pulp-collecting box (52).