CN206512119U - Novel corn starch production system - Google Patents

Abstract

The utility model discloses a kind of novel corn starch production system, it includes infusion system, corn steep liquor recovery system, crushing system, plumule processing system, fiber treatment system, starch processing system, seitan processing system, and starch processing system includes the thick newborn tank of starch, slightly starch desander, newborn filter, thick newborn seperator, thick breast underflow tank, the newborn tank of essence, the newborn filter of essence, ten grades of cyclones, scraper gravity tank, scraper centrifugal machine, overflow tank, slash flow container, horizontal screw centrifuge, protein salvage liquid storage tank, protein salvage liquid desanders.Advantage：1st, the tail gas of sulfur dioxide absorbing tower discharge and the sulfur dioxide gas of sulfurous acid storage tank volatilization are directly entered relieving haperacidity clean water tank after steam-water separation and participate in relieving haperacidity；2nd, recycled by skimming liquid to scraper centrifugal machine, improve the utilization rate of raw material；3rd, the foul smell for carrying sulfur dioxide is washed using buck, to neutralize sulfur dioxide absorption, it is to avoid pernicious gas is discharged into air, prevented the pollution of the environment.

Description

Novel corn starch production system

Technical field：

The utility model is related to Maize Production technical field, specifically designs a kind of novel corn starch production system.

Background technology：

Cornstarch industry has evolved into global new industry, and the wet milling industry of corn is quickly grown, Neng Gouyou Effect ground separation seed each several part, produces the starch and byproduct of high-purity；The processing method of wet production cornstarch is：Leaching Bubble, corase grind, fine grinding (to plumule extract fiber separation), the separation of albumen, the process such as the drying of starch washing and starch, obtain To the starch product of high-purity.Existing starch wet production system generally comprises infusion system, corn steep liquor recovery system, broken system System, plumule processing system, fiber treatment system, starch processing system, starch drying unit, eight subsystems of seitan processing system System, infusion system is that corn is soaked by the sulfurous aqueous acid of adverse current, until use corn particle can by hand squeeze crack, Plumule is completely extruded；After immersion terminates, the soak in steeping tank enters corn steep liquor recovery system, by the corn steep liquor in soak Reclaimed, utilized, the corn particle after immersion then enters crushing system；Crushing system by corn particle carry out it is broken apart go out Plumule, fiber and starch milk, the plumule isolated enter plumule processing system, and the starch milk isolated enters fiber treatment system System, the starch isolated enters starch processing system, and starch processing system is isolated then further by seitan separating treatment Seitan enters seitan processing system；But, found in actual production process, the system of existing wet production cornstarch is present Following shortcoming：1st, in infusion system, substantial amounts of sulfur dioxide is carried in sulfur dioxide absorbing tower tail gas, is directly discharged to big Polluted the environment in gas, while the wasting of resources can be caused, increase production cost；2nd, in starch processing system, centrifuged by scraper Substantial amounts of starch is carried in the slash liquid of machine output, if directly discharge can cause the waste of raw material, increases water consumption；3rd, it is whole raw Steeping tank group, broken tank, thick newborn tank, the tail gas of broken tank are directly discharged into air in production system, wherein the titanium dioxide carried Sulphur foul smell is directly discharged into air, is polluted the environment.

Utility model content：

The purpose of this utility model is to provide a kind of novel corn that can effectively reduce energy consumption, improve energy utilization rate Starch production system.

The utility model is implemented by following technical scheme：Novel corn starch production system, it includes infusion system, corn Recovery system, crushing system, plumule processing system, fiber treatment system, starch processing system, seitan processing system are starched, it is described The steeping tank group liquid outlet of infusion system is connected with dilute corn steep liquor reservoir inlet of the corn steep liquor recovery system, the immersion The discharging opening of tank group is connected with the stone removing tank for corns charging aperture of the crushing system, and the one-level of the crushing system crushes cyclone Top flow export is connected with the one-level plumule pressure curved sieve charging aperture of the plumule processing system, after the pin mill mill of the crushing system Tank discharging opening is connected with the first order pressure curved sieve charging aperture of six grades of fibre pres song sieve of the fiber treatment system, described broken The warehouse pressure curved sieve top flow export of broken system is connected with the thick newborn tank charging aperture of the starch of the starch processing system, the starch Overfall of each thick newborn underflow tank of processing system with the air flotation slot of the seitan processing system is connected；The starch processing System includes the thick newborn tank of the starch, starch desander, thick newborn filter, thick newborn seperator, the thick newborn underflow tank, essence breast The newborn filter of tank, essence, ten grades of cyclones, scraper gravity tank, scraper centrifugal machine, overflow tank, slash flow container, horizontal screw centrifuge, albumen Liquid storage tank, protein salvage liquid desander are reclaimed, the inlet of the discharging opening and the starch desander of the thick newborn tank of the starch connects Logical, the liquid outlet of the starch desander is connected with a thick newborn filter inlet respectively by pipeline, described in every Inlet of the liquid outlet of thick breast filter respectively with a thick newborn seperator is connected, the bottom of every thick newborn seperator Flow export is connected with a thick newborn underflow tank inlet respectively, the discharging opening of every thick newborn underflow tank with the essence Newborn tank connection, the charging aperture of the liquid outlet of every thick newborn underflow tank with the thick newborn tank of the starch connect, the essence breast tank Liquid outlet connected by the newborn filter of essence with the inlet of the First cyclone of described ten grades of cyclones, described ten grades The liquid outlet of tenth cyclone of cyclone is connected with the inlet of the scraper gravity tank, the overflow of the scraper gravity tank Mouth is connected with the inlet of the overflow tank, and the liquid outlet of the overflow tank is connected with the inlet of the scraper gravity tank, institute The liquid outlet for stating scraper gravity tank is connected with the inlet of the scraper centrifugal machine, the liquid outlet of the scraper centrifugal machine with it is described Skim flow container inlet connection, it is described skim flow container liquid outlet connected with the inlet of the horizontal screw centrifuge, the sleeping spiral shell from The discharging opening of scheming is connected with the inlet of the overflow tank, and the liquid outlet of the horizontal screw centrifuge is stored up with the protein salvage liquid Tank inlet is connected, and the protein salvage liquid storage tank liquid outlet is connected with the protein salvage liquid desander inlet, the egg White recovered liquid desander liquid outlet is connected with the inlet of the tenth cyclone of described ten grades of cyclones；The scraper centrifugal machine The starch charging screw feed en-trance of discharging opening and starch drying unit connect.

Further, it also includes foul smell recovery system, and the foul smell recovery system includes tail gas air-introduced machine, foul smell and washed Tower, alkali liquor storage tank, the tail gas fan inlet respectively with the steeping tank group, the newborn tank of essence, the crushing system One-level crushes tank, the two-stage crushing tank of the crushing system, the three-level of the crushing system and crushes tank, the seitan processing system Dilute seitan tank, the seitan processing system dense seitan tank gas outlet connection, the tail gas fan out draft with it is described smelly Gas wash tower air inlet is connected, and the foul smell scrubbing tower inlet is connected by lye pump with the alkali liquor storage tank.

Further, the infusion system include sulphur-furnace, sulfur dioxide absorbing tower, relieving haperacidity clean water tank, sulfurous acid storage tank, Sulfurous acid cyclone, relieving haperacidity clear water injector, the steeping tank group, the gas outlet of the sulphur-furnace absorb with the sulfur dioxide Tower air inlet is connected, and the gas outlet of the sulfur dioxide absorbing tower passes through sulfur dioxide air-introduced machine and the sulfurous acid cyclone Air inlet is connected, and the liquid outlet of the sulfurous acid cyclone at the top of the relieving haperacidity clean water tank with connecting, the sulfurous acid cyclone Gas outlet connected with the air inlet of the relieving haperacidity clear water injector, water inlet, the dioxy of the relieving haperacidity clear water injector The inlet for changing sulphur absorption tower is connected by relieving haperacidity clarified water pump with the relieving haperacidity clean water tank delivery port, and the sulfur dioxide absorbs The liquid outlet of tower is connected with the sulfurous acid storage tank inlet, and the sulfurous acid tank top is entered with the sulfur dioxide air-introduced machine Gas port is connected, and the liquid outlet of the sulfurous acid storage tank is connected by sulfurous acid pump with the inlet of the steeping tank group.

Advantage of the present utility model：1st, the tail gas of sulfur dioxide absorbing tower discharge and the sulfur dioxide of sulfurous acid storage tank volatilization Gas is directly entered relieving haperacidity clean water tank after steam-water separation and participates in relieving haperacidity, on the one hand improves relieving haperacidity efficiency and sulphur utilization rate, On the other hand, sulfur dioxide can be avoided to be directly discharged into air, prevents environmental pollution；2nd, entered by skimming liquid to scraper centrifugal machine Row is recycled, and on the one hand improves the utilization rate of raw material, has on the other hand saved about 150 tons or so daily of use water, reduction Wastewater treatment is born, and improves the utilization rate of water resource, is Reducing Cost in Enterprises, increases benefit；3rd, using buck to carrying two The foul smell of sulfur oxide is washed, and to neutralize sulfur dioxide absorption, it is to avoid pernicious gas is discharged into air, is prevented the pollution of the environment.

Brief description of the drawings：

Fig. 1 is the utility model overall structure diagram.

Fig. 2 is infusion system structural representation.

Fig. 3 is starch processing system structural representation.

Fig. 4 is foul smell recovery system structural representation.

Infusion system 1, sulphur-furnace 11, sulfur dioxide absorbing tower 12, relieving haperacidity clean water tank 13, sulfurous acid storage tank 14, sulfurous acid Cyclone 15, relieving haperacidity clear water injector 16, steeping tank group 17, sulfur dioxide air-introduced machine 18, corn steep liquor recovery system 2, broken system The thick newborn tank 61 of system 3, plumule processing system 4, fiber treatment system 5, starch processing system 6, starch, starch desander 62, thick breast Filter 63, thick newborn seperator 64, thick newborn underflow tank 65, the newborn tank 66 of essence, the newborn filter 67 of essence, ten grades of cyclones 68, scrape knife up Position tank 69, scraper centrifugal machine 610, overflow tank 611, slash flow container 612, horizontal screw centrifuge 613, protein salvage liquid storage tank 614, albumen Recovered liquid desander 615, seitan processing system 7, starch drying unit 8, foul smell recovery system 9, tail gas air-introduced machine 91, foul smell are washed Wash tower 92, alkali liquor storage tank 93, lye pump 94.

Embodiment：

As shown in figure 1, novel corn starch production system, it includes infusion system 1, corn steep liquor recovery system 2, broken system System 3, plumule processing system 4, fiber treatment system 5, starch processing system 6, seitan processing system 7, the steeping tank of infusion system 1 17 liquid outlets of group are connected with dilute charging aperture of corn steep liquor storage tank 21 of corn steep liquor recovery system 2, and the discharging opening of steeping tank group 17 is with breaking The charging aperture of stone removing tank for corns 31 connection of broken system 3, the one-level of crushing system 3 crushes the top flow export of cyclone 36 and handled with plumule The discharging opening of tank 314 and fiber treatment after the charging aperture of one-level plumule pressure curved sieve 41 connection of system 4, the pin mill mill of crushing system 3 The first order pressure curved sieve charging aperture connection of six grades of fibre pres song sieve 52 of system 5, the warehouse pressure curved sieve of crushing system 3 312 top flow exports are connected with the thick newborn charging aperture of tank 61 of the starch of starch processing system 6, each thick newborn bottom of starch processing system 6 Overfall of the tank 65 with the air flotation slot 71 of seitan processing system 7 is flowed to connect；

As shown in Fig. 2 infusion system 1 includes sulphur-furnace 11, sulfur dioxide absorbing tower 12, relieving haperacidity clean water tank 13, sulfurous acid Storage tank 14, sulfurous acid cyclone 15, relieving haperacidity clear water injector 16, steeping tank group 17, the gas outlet of sulphur-furnace 11 and sulfur dioxide The air inlet connection of absorption tower 12, the gas outlet of sulfur dioxide absorbing tower 12 passes through sulfur dioxide air-introduced machine 18 and sulfurous acid cyclone 15 air inlet connection, the liquid outlet of sulfurous acid cyclone 15 is connected with the top of relieving haperacidity clean water tank 13, sulfurous acid cyclone 15 Gas outlet is connected with the air inlet of relieving haperacidity clear water injector 16, water inlet, the sulfur dioxide absorbing tower of relieving haperacidity clear water injector 16 12 inlet is connected by relieving haperacidity clarified water pump 19 with the delivery port of relieving haperacidity clean water tank 13, and relieving haperacidity clarified water pump 19 can be by relieving haperacidity clear water Clear water in tank 13 is pumped into relieving haperacidity clear water injector 16 and sulfur dioxide absorbing tower 12 respectively, sulfur dioxide absorbing tower 12 Liquid outlet is connected with the inlet of sulfurous acid storage tank 14, and the top of sulfurous acid storage tank 14 is connected with the air inlet of sulfur dioxide air-introduced machine 18, The liquid outlet of sulfurous acid storage tank 14 is connected by sulfurous acid pump 110 with the inlet of steeping tank group 17, and sulfurous acid pump 110 can be by Sulfurous acid in sulfurous acid storage tank 14 is pumped into steeping tank group 17；The sulfurous acid flue gas that sulphur-furnace 11 is produced and relieving haperacidity clarified water pump 19 clear water being pumped into are formed after being mixed in sulfur dioxide absorbing tower 12 enters sulfurous acid storage tank 14 after sulfurous acid liquid, deposited Storage, is then pumped into steeping tank group 17 by the sulfurous acid in sulfurous acid storage tank 14 by sulfurous acid pump 110 and provides soak；Herein During, the gas that the tail gas that sulfur dioxide absorbing tower 12 is discharged volatilizees with sulfurous acid storage tank 14 is made in sulfur dioxide air-introduced machine 18 With in lower entrance sulfurous acid cyclone 15, the liquid isolated through sulfurous acid cyclone 15 enters relieving haperacidity clean water tank 13, Jin Erjin Enter sulfur dioxide absorbing tower 12, the clear water that the gas isolated through sulfurous acid cyclone 15 sprays with relieving haperacidity clear water injector 16 enters Further the sulfur dioxide in gas is absorbed into relieving haperacidity clean water tank 13 after the mixing of one step；Sulfur dioxide absorbing tower The sulfur dioxide gas that the tail gas of 12 discharges volatilizees with sulfurous acid storage tank 14 is directly entered relieving haperacidity clean water tank 13 after steam-water separation Relieving haperacidity is participated in, relieving haperacidity efficiency and sulphur utilization rate is on the one hand improved, on the other hand, sulfur dioxide can be avoided to be directly discharged into greatly In gas, prevent environmental pollution；

As shown in figure 3, starch processing system 6 include the thick newborn tank 61 of starch, it is starch desander 62, thick newborn filter 63, thick Newborn seperator 64, thick newborn underflow tank 65, the newborn tank 66 of essence, the newborn filter 67 of essence, ten grades of cyclones 68, scraper gravity tank 69, scrapers Centrifuge 610, overflow tank 611, slash flow container 612, horizontal screw centrifuge 613, protein salvage liquid storage tank 614, protein salvage liquid desanding Device 615, the discharging opening of the thick newborn tank 61 of starch is connected with the inlet of starch desander 62, and the liquid outlet of starch desander 62 passes through Pipeline is connected with a thick breast inlet of filter 63 respectively, and the liquid outlet of every thick newborn filter 63 divides with a thick breast respectively Disembark 64 inlet connection, the underflow outlet of every thick newborn seperator 64 connects with a thick newborn inlet of underflow tank 65 respectively Logical, the discharging opening of every thick newborn underflow tank 65 is connected with smart newborn tank 66, and the liquid outlet of every thick newborn underflow tank 65 is and starch The charging aperture connection of thick breast tank 61, the liquid outlet of essence breast tank 66 is revolved by the First of smart newborn filter 67 and ten grades of cyclones 68 The inlet connection of device is flowed, the liquid outlet of the tenth cyclone of ten grades of cyclones 68 connects with the inlet of scraper gravity tank 69 Logical, the overfall of scraper gravity tank 69 is connected with the inlet of overflow tank 611, liquid outlet and the scraper gravity tank of overflow tank 611 69 inlet connection, the liquid outlet of scraper gravity tank 69 is connected with the inlet of scraper centrifugal machine 610, scraper centrifugal machine 610 Liquid outlet with skim flow container 612 inlet connect, slash flow container 612 liquid outlet connected with the inlet of horizontal screw centrifuge 613, The discharging opening of horizontal screw centrifuge 613 is connected with the inlet of overflow tank 611, the liquid outlet and protein salvage of horizontal screw centrifuge 613 The inlet of liquid storage tank 614 is connected, and the liquid outlet of protein salvage liquid storage tank 614 is connected with the inlet of protein salvage liquid desander 615, egg The white liquid outlet of recovered liquid desander 615 is connected with the inlet of the tenth cyclone of ten grades of cyclones 68；Scraper centrifugal machine 610 The starch charging screw feed en-trance of discharging opening and starch drying unit 8 connect；Crude starch in the thick newborn tank 61 of starch is through starch Desander 62, thick newborn filter 63, thick newborn seperator 64 isolate seitan after handling and obtain pure starch milk, through ten grades of eddy flows after Device 68 carries out countercurrent washing, reduces the moisture content of starch milk, and it is high-order that the starch milk isolated by ten grades of cyclones 68 enters scraper Tank 69 is cached, and the starch milk gone out by the overflow of scraper gravity tank 69 is again introduced into scraper gravity tank 69 after entering overflow tank 611, Washing separation is carried out into scraper centrifugal machine 610 by the starch milk discharged by the bottom of scraper gravity tank 69, the dense shallow lake isolated Powder breast enters starch drying unit 8, and the slash liquid isolated, which enters, skims flow container 612, subsequently enters in horizontal screw centrifuge 613, and crouch spiral shell After centrifuge 613 is completely separated starch and water by centrifugal force, starch has returned to ten grades of cyclones 68 and has been washed to return Receive and utilize, and water then returns to overflow tank 611 and participates in starch washing again, carries out reclaiming profit by skimming scraper centrifugal machine 610 liquid With on the one hand improving the utilization rate of raw material, on the other hand saved about 150 tons or so of use water daily, reduced wastewater treatment Burden, improves the utilization rate of water resource, is Reducing Cost in Enterprises, increases benefit；

As shown in figure 4, it also includes foul smell recovery system 9, foul smell recovery system 9 includes tail gas air-introduced machine 91, foul smell and washed Wash tower 92, alkali liquor storage tank 93, the air inlet of tail gas air-introduced machine 91 respectively with steeping tank group 17, the newborn tank 66 of essence, crushing system 3 one-level Broken tank 35, the two-stage crushing tank 39 of crushing system 3, the three-level of crushing system 3 crush tank 311, dilute bran of seitan processing system 7 The dense gas outlet of seitan tank 74 connection of matter tank 73, seitan processing system 7, the air outlet of tail gas air-introduced machine 91 enters with foul smell scrubbing tower 92 Gas port is connected, and the inlet of foul smell scrubbing tower 92 is connected by lye pump 94 with alkali liquor storage tank 93；It will be soaked by tail gas air-introduced machine 91 Steep the newborn tank 66 of tank group 17, essence, the broken tank 35 of one-level, two-stage crushing tank 39, dilute seitan tank 73, the tail gas of dense seitan tank 74 and introduce smelly In gas wash tower 92, at the same time, the alkali lye (sodium hydroxide) in alkali liquor storage tank 93 is pumped into by foul smell by lye pump 94 and washed Wash in tower 92, and then absorbed with buck to being introduced into the sulfur dioxide in foul smell scrubbing tower 92 in foul smell, it is to avoid pernicious gas It is discharged into air, prevents the pollution of the environment.

Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model Within the spirit and principle of utility model, any modification, equivalent substitution and improvements made etc. should be included in the utility model Protection domain within.

Claims (3)

1. novel corn starch production system, it includes infusion system, corn steep liquor recovery system, crushing system, plumule processing system System, fiber treatment system, starch processing system, seitan processing system, the steeping tank group liquid outlet of the infusion system with it is described Dilute corn steep liquor reservoir inlet connection of corn steep liquor recovery system, the discharging opening of the steeping tank group and the jade of the crushing system Rice is except the connection of stone cistern charging aperture, and the one-level of the crushing system crushes the one of cyclone top flow export and the plumule processing system Tank discharging opening and the six of the fiber treatment system after the charging aperture connection of level plumule pressure curved sieve, the pin mill mill of the crushing system Level fibre pres song sieve the first order pressure curved sieve charging aperture connection, the warehouse pressure curved sieve top flow export of the crushing system with The thick newborn tank charging aperture connection of the starch of the starch processing system, each thick newborn underflow tank of the starch processing system is and institute State the overfall connection of the air flotation slot of seitan processing system；Characterized in that, the starch processing system is thick including the starch Newborn tank, starch desander, thick newborn filter, thick newborn seperator, the thick newborn underflow tank, the newborn tank of essence, the newborn filter of essence, ten grades of rotations Flow device, scraper gravity tank, scraper centrifugal machine, overflow tank, slash flow container, horizontal screw centrifuge, protein salvage liquid storage tank, protein salvage liquid Desander, the discharging opening of the thick newborn tank of the starch connects with the inlet of the starch desander, and the starch desander goes out Liquid mouthful is connected with a thick newborn filter inlet respectively by pipeline, the liquid outlet difference of every thick newborn filter Connected with the inlet of a thick newborn seperator, the underflow outlet of every thick newborn seperator is described thick with one respectively Newborn underflow tank inlet connection, the discharging opening of every thick newborn underflow tank is connected with the newborn tank of the essence, every thick breast Charging aperture of the liquid outlet of underflow tank with the thick newborn tank of the starch is connected, and the liquid outlet of the newborn tank of essence passes through the newborn mistake of the essence Filter is connected with the inlet of the First cyclone of described ten grades of cyclones, the tenth cyclone of described ten grades of cyclones Liquid outlet is connected with the inlet of the scraper gravity tank, the overfall of the scraper gravity tank and the inlet of the overflow tank Connection, the liquid outlet of the overflow tank connects with the inlet of the scraper gravity tank, the liquid outlet of the scraper gravity tank and The inlet connection of the scraper centrifugal machine, the liquid outlet of the scraper centrifugal machine is connected with the inlet of the slash flow container, institute The liquid outlet for stating slash flow container is connected with the inlet of the horizontal screw centrifuge, the discharging opening of the horizontal screw centrifuge and the overflow The inlet connection of tank, the liquid outlet of the horizontal screw centrifuge is connected with the protein salvage liquid storage tank inlet, the albumen Reclaim liquid storage tank liquid outlet connected with the protein salvage liquid desander inlet, the protein salvage liquid desander liquid outlet and The inlet connection of tenth cyclone of described ten grades of cyclones；The discharging opening of the scraper centrifugal machine and starch drying unit Starch charging screw feed en-trance connection.

2. novel corn starch production system according to claim 1, it is characterised in that it also includes foul smell and reclaims system System, the foul smell recovery system includes tail gas air-introduced machine, foul smell scrubbing tower, alkali liquor storage tank, the tail gas fan inlet point One-level not with the steeping tank group, the newborn tank of the essence, the crushing system crushes the two-stage crushing of tank, the crushing system Tank, the three-level of the crushing system crush tank, dilute seitan tank of the seitan processing system, the dense bran of the seitan processing system Matter tank gas outlet is connected, and the tail gas fan out draft is connected with the foul smell scrubbing tower air inlet, the foul smell scrubbing tower Inlet is connected by lye pump with the alkali liquor storage tank.

3. according to any described novel corn starch production system of claim 1 or 2, it is characterised in that the infusion system Including sulphur-furnace, sulfur dioxide absorbing tower, relieving haperacidity clean water tank, sulfurous acid storage tank, sulfurous acid cyclone, relieving haperacidity clear water injector, The steeping tank group, the gas outlet of the sulphur-furnace is connected with the sulfur dioxide absorbing tower air inlet, and the sulfur dioxide is inhaled The gas outlet for receiving tower is connected by sulfur dioxide air-introduced machine with the air inlet of the sulfurous acid cyclone, the sulfurous acid cyclone Liquid outlet and the relieving haperacidity clean water tank at the top of connect, the gas outlet of the sulfurous acid cyclone and the relieving haperacidity clear water injector Air inlet connection, water inlet, the inlet of the sulfur dioxide absorbing tower of the relieving haperacidity clear water injector pass through relieving haperacidity Clarified water pump is connected with the relieving haperacidity clean water tank delivery port, and the liquid outlet of the sulfur dioxide absorbing tower enters with the sulfurous acid storage tank Liquid mouthful connection, the sulfurous acid tank top connects with the sulfur dioxide air-introduced machine air inlet, and the sulfurous acid storage tank goes out Liquid mouthful is connected by sulfurous acid pump with the inlet of the steeping tank group.