CN205030498U - Grain bulking machine with aircraft nose cooling body - Google Patents

Abstract

The utility model discloses a grain bulking machine with aircraft nose cooling body, including the frame, the frame is connected with the press for extracting juice thorax, and the feed end that presses the thorax upwards communicates there is the inlet pipe, the frame front side is equipped with the motor, and the belt lace wheel is connected to the motor, and the belt lace wheel is connected with big belt pulley through driving belt, it presses the spiral shell assembly to be equipped with in the inner chamber of press for extracting juice thorax, pressing the thorax rear end and being connected with the discharge gate, the discharge gate is connected with ejection of compact boot, is equipped with the pneumatic cylinder on the ejection of compact boot, and hydraulic cylinder piston rod's front end is equipped with the bulge control head that is back little frustum shape before big, press the spiral shell with the setting of main shaft coaxial line and the two link together through connecting screw rod, big belt pulley with the main shaft key is connected, the frame front end is equipped with cooling heat transfer case, the slope of cooling heat transfer incasement is equipped with the profit baffle, and the both sides face of profit baffle is connected with the heat transfer floor respectively. The utility model discloses job stabilization is reliable, can control the thickness degree of material to it is good to keep the lubricating oil cooling.

Description

Be provided with the grain bulking machine of head cooling body

Technical field

The utility model relates to a kind of grain processing apparatus, particularly relates to a kind of grain bulking machine being provided with head cooling body grain being carried out to expanding treatment.

Background technology

The technology of expansion grain obtains increasingly extensive application in recent years, not only for the dilated food that people eat, and is widely used in feed processing technology field.

Puffing technique is that grain is placed in puffing apparatus, heats, pressurizes to grain, makes the moisture in grain grain be superheat state, and grain grain itself becomes soft; When the certain high pressure of arrival, grain are by when sending in expanded container, high pressure becomes normal pressure rapidly, and at this moment grain intragranular is the moisture instant vaporization of superheat state thus violent explosion occurs, inflatable about 2000 times of hydrone.The huge bulbs of pressure not only destroy the formalness of grain grain, and broken grain intragranular molecular structure, insoluble long chained starch is prescinded into water-soluble short-chain starch, dextrin and sugar, so the insoluble substance in dilated food decreases, water-soluble substances increases.

Puffing technique serves diastatic effect, and namely before food does not also enter oral cavity, just make starch there occurs cracking process, in this sense, bulking equipment equals the digestive organs extending people.This just accelerates the digestion process of human body to food, improves the digestibility of dilated food.From this angle, puffing technique is a kind of desirable foodstuff processing technology, not only useful to people, and during for field of feed, also can improve the utilization rate of feed.

Existing grain bulking machine complex structure, machine head heating seriously causes job insecurity, uses middle lubricating oil easily to leak, and needs often maintenance (as checked sealing condition, adding lubricating oil, changing sealing ring etc.), uses comparatively inconvenience.

Utility model content

The purpose of this utility model is the grain bulking machine providing a kind of working stability to be provided with head cooling body reliably, can control the thickness degree of material, prevent the high oil temperature of lubricating oil.

For achieving the above object, the grain bulking machine being provided with head cooling body of the present utility model comprises support, and support is connected with columnar squeezing thorax by some spaced bracing frames, and squeezing thorax one end is feed end and the other end is discharge end; The feed end squeezing thorax is upwards communicated with feed pipe, and the top of feed pipe is provided with charging aperture; So that to squeeze thorax feed end side be on front side of it and to squeeze thorax discharge end side on rear side of it, be provided with motor on front side of support, the output shaft of motor is provided with small belt pulley, and small belt pulley is connected with big belt pulley by driving belt; Squeeze in the inner chamber of thorax and be provided with pressing screw assembly, pressing screw assembly comprises pressing screw in a tubular form, is equipped with screw rod in pressing screw, and pressing screw outer wall is provided with spiral pushing blade; The pitch of described spiral pushing blade reduces gradually by after forward direction;

To squeeze the axially middle part of thorax for boundary, squeeze thorax front portion and be provided with some steam inlet tubes, the outer end of steam inlet tube protrudes upward squeezing thorax, and the inner of steam inlet tube is stretched into and squeezed thorax and be connected with squeezing thorax; Squeeze thorax back segment and be provided with thermometer; Squeeze thorax back segment and be connected with Pressure gauge, Pressure gauge protrudes upward squeezing thorax;

Squeeze thorax rear end and be fixedly connected with discharging opening, discharging opening is rear large front little toroidal, and discharging opening is connected with discharging boot, and discharging boot is provided with hydraulic cylinder, and the front end of hydraulic cylinder piston rod is provided with the expansion control head in rear large front little taper type; The front end external diameter of expansion control head is less than the front inner diameter of discharging opening, and the rear end external diameter of expansion control head is greater than the front inner diameter of discharging opening and is less than the back end inside diameter of discharging opening; Expansion control head stretches into discharging opening and also and between the inwall of discharging opening forms annular tapping channel;

Described pressing screw with main shaftto be coaxially set and the two is linked together by connecting screw rod;

The centre bore of big belt pulley is connected with the outer rim key of described main shaft; Support front end is provided with cooling heat transferring case, and the top of cooling heat transferring case is provided with support, and main shaft is connected on support by bearing and bearing block;

In cooling heat transferring case by front upper to after have a down dip and be provided with profit dividing plate, cooling heat transferring case is divided into oil pocket and water cavity by profit dividing plate; The two sides of described profit dividing plate are evenly connected with the heat transfer floor that some cross sections are Y type respectively, and heat transfer floor comprises the heat transfer connecting plate be connected on profit dividing plate, and the free end of heat transfer connecting plate is connected with V-shaped heat sink; Heat transfer connecting plate is provided with through hole;

The front-end and back-end of bearing block are respectively equipped with bearing (ball) cover, and former and later two bearing (ball) covers, bearing block and main shaft surround the bearing chamber installing described bearing, are marked with lubricating oil in bearing chamber; Be connected with spilling oil pipe between bearing chamber and described oil pocket, overflow oil pipe upper end and stretch into bearing chamber and higher than the bottom surface of bearing chamber, the top of oil pocket is stretched in the lower end of overflowing oil pipe; Described bearing chamber is connected with oil return pipe, and oil return pipe is connected with scavenge oil pump, and the oil inlet pipe of scavenge oil pump stretches into the bottom of described oil pocket downwards and is connected with oil filter; Be provided with the water inlet for connecting external water inlet pipe bottom described water cavity, described water cavity top is provided with the delivery port for connecting external outlet pipe.

Described squeezing thorax comprises some squeezing thorax sections, is linked together between adjacent squeezing thorax section by flange arrangement.

Described pressing screw comprises some pressing screw sections in a tubular form, and between adjacent pressing screw section, buckle links together; Described screw rod of wearing runs through all pressing screw sections of all pressing screw Duan Bingyu and is threaded.

The utility model has following advantage:

1. the concrete structure of cooling heat transferring case in the utility model, be convenient to utilize the water in plant water supply pipeline to carry out cutting oil, and by profit dividing plate, concrete heat exchange structure such as heat transfer floor, louvre etc., heat exchange area can be increased, improve the heat exchange efficiency between profit, thus cutting oil efficiently, prevent high oil temperature from bringing harm.

2. overflow the setting of oil pipe, can ensure that the lubricating oil in bearing chamber has certain oil level (highly), thus ensure that lubrication is good.Regulate the height overflowing oil pipe upper end, oil level and the oil mass of the indoor lubricating oil of bearing can be regulated.

3. the pitch of spiral pushing blade reduces gradually by after forward direction, and in rotation, during spiral pushing material, material is increased gradually by the amount compressed, and pressure raises gradually, is conducive to carrying out smoothly of puffing process.

4. thermometer and manometric setting, is convenient to the expanded front temperature and pressure of material in monitoring work, thus regulates the course of work more accurately, improve expansion effect.

5. the concrete structure of pressing screw, is convenient to assembling, can regulates the length of pressing screw (assembled more pressing screw section) as required, is suitable for the grain bulking machine being provided with head cooling body manufacturing different model.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is cross-sectional schematic of the present utility model;

Fig. 3 is the enlarged drawing at A place in Fig. 2;

Fig. 4 is the enlarged drawing at B place in Fig. 2;

Fig. 5 is the enlarged drawing at C place in Fig. 2;

Fig. 6 is perspective view of the present utility model;

Fig. 7 be bearing chamber and belt pulley place partly cut open schematic diagram;

Fig. 8 be pressing screw assembly partly cut open schematic diagram;

Fig. 9 is the perspective view of pressing screw assembly;

Figure 10 is the structural representation that pressing screw adopts spiral buckle to be connected with main shaft;

Figure 11 is the structural representation that pressing screw adopts eye-splice to be connected with main shaft;

Figure 12 is the schematic diagram that bearing chamber place is provided with the main shaft of front helixseal and rear screw sealing;

Figure 13 is the structural representation of the heat transfer floor of Y type;

Figure 14 is the top view of Figure 13.

Detailed description of the invention

Direction shown in arrow in Fig. 7 is the flow direction of lubricating oil in this place's pipeline (overflowing oil pipe and oil return pipe).

As shown in Fig. 1 to Figure 14, the grain bulking machine being provided with head cooling body of the present utility model comprises support 1, and support 1 is connected with columnar squeezing thorax 3 by some spaced bracing frames 2, and squeezing thorax 3 one end is feed end and the other end is discharge end; The feed end squeezing thorax 3 is upwards communicated with feed pipe 4, and the top of feed pipe 4 is provided with charging aperture 5; To squeeze thorax 3 feed end side for (big belt pulley 6 side is front side of the present utility model in Fig. 1 and Fig. 2) on front side of it and to squeeze thorax 3 discharge end side for (discharging boot 8 side is rear side of the present utility model in Fig. 1 and Fig. 2) on rear side of it, be provided with motor 9 on front side of support 1, the output shaft of motor 9 is provided with small belt pulley 7.

Small belt pulley 7 is connected with big belt pulley 6 by driving belt; Squeeze in the inner chamber of thorax 3 and be provided with pressing screw assembly, pressing screw assembly comprises pressing screw 10 in a tubular form, is equipped with screw rod 11 in pressing screw 10, and pressing screw 10 outer wall is provided with spiral pushing blade 12; The pitch of described spiral pushing blade 12 reduces gradually by after forward direction.

Squeeze thorax 3 top and be fixedly connected with multiple stirring gear stick 13 for stirring material by separation seal after forward direction, each outer end of stirring gear stick 13 stretches out squeezing thorax 3 and squeezing thorax 3 is stretched in the inner; To squeeze the axially middle part of thorax 3 for boundary, some stirring gear sticks 13 squeezing thorax 3 front portion that is positioned at are provided with steam inlet tube 14, the outer end of steam inlet tube 14 is stretched out and is stirred gear stick 13 and for connecting outside steam pipework, stirring gear stick 13 the inner and being provided with the steam vent 15 being communicated with steam inlet tube 14 and squeezing thorax 3 inner chamber; Thermometer 16 is provided with at least one stirring gear stick 13 of squeezing thorax 3 back segment; Squeeze thorax 3 back segment and be connected with Pressure gauge 17, Pressure gauge 17 protrudes upward and squeezes thorax 3.

Squeeze thorax 3 rear end and be bolted to connection discharging opening 18, discharging opening 18 is in rear large front little toroidal, discharging opening 18 is connected with discharging boot 8, and discharging boot 8 is provided with hydraulic cylinder 19, and the front end of hydraulic cylinder piston rod is provided with the expansion control head 20 in rear large front little taper type; The front end external diameter of expansion control head 20 is less than the front inner diameter of discharging opening 18, and the rear end external diameter of expansion control head 20 is greater than the front inner diameter of discharging opening 18 and is less than the back end inside diameter of discharging opening 18; Expansion control head 20 stretches into discharging opening 18 and and forms annular tapping channel 21 between the inwall of discharging opening 18.

Described pressing screw 10 front end is connected with main shaft 22, and described pressing screw 10 is coaxially set with described main shaft 22 and the two is linked together by connecting screw rod 23, and connecting screw rod 23 is positioned at the axis place of main shaft 22 and pressing screw 10 and is threaded with pressing screw 10; Connecting screw rod through main shaft and with the relation be not threaded main shaft.Connecting screw rod 23 head be crimped on the front end face of main shaft 22.

The centre bore of big belt pulley 6 is connected with the outer rim key of described main shaft 22; Support 1 front end is provided with cooling heat transferring case 24, and the top of cooling heat transferring case 24 is provided with support 25, and main shaft 22 is connected on support 25 by bearing 30 and bearing block 31.

In cooling heat transferring case 24 by front upper to after have a down dip and be provided with profit dividing plate 26, cooling heat transferring case 24 is divided into oil pocket 34 and water cavity 35 by profit dividing plate 26; The two sides of described profit dividing plate 26 are evenly connected with the heat transfer floor that some cross sections are Y type respectively, and heat transfer floor comprises the some heat transfer connecting plates 27 be connected on profit dividing plate 26, and the free end of heat transfer connecting plate 27 is connected with V-shaped heat sink 28; Heat transfer connecting plate 27 is provided with through hole 29;

The front-end and back-end of bearing block 31 are respectively equipped with bearing (ball) cover 32, and former and later two bearing (ball) covers 32, bearing block 31 and main shaft 22 surround the bearing chamber installing described bearing 30, are marked with lubricating oil in bearing chamber; Be connected with between bearing chamber and described oil pocket 34 and overflow oil pipe 33, overflow oil pipe 33 upper end and stretch into bearing chamber and higher than the bottom surface of bearing chamber, the top of oil pocket 34 is stretched in the lower end of overflowing oil pipe 33; The lower ending opening overflowing oil pipe 33 is positioned at the top of a heat transfer connecting plate 27 of top.

Described bearing chamber is connected with oil return pipe 36, oil return pipe 36 is connected with scavenge oil pump 37, and the oil inlet pipe 38 of scavenge oil pump 37 stretches into the bottom of described oil pocket 34 downwards and is connected with oil filter 39(and preferably adopts ferrule oil filter 39, and filter efficiency is high, structure is simple, and maintenance is easy); Be provided with the water inlet 40 for connecting external water inlet pipe bottom described water cavity 35, described water cavity 35 top is provided with the delivery port 41 for connecting external outlet pipe.

The main shaft 22 in bearing chamber rear and front end portion is respectively equipped with front helixseal 42 and rear screw sealing 43, the rotation direction of forward and backward helixseal 42,43 contrary and all when main shaft 22 rotates to propelling movement lubricating oil in direction in the middle part of bearing chamber;

Described feed pipe 4 is V-shaped broken pipe, and the tube wall lateral surface of every section of V-shaped feed pipe 4 is equipped with magnetic separation electromagnet 44.

Described squeezing thorax 3 comprises some squeezing thorax sections, is linked together between adjacent squeezing thorax section by flange arrangement 45, thus is convenient to when mounted adjust the entire length of squeezing thorax 3 according to actual needs.

The feed pipe 4 at magnetic separation electromagnet 44 place is provided with residue-removing opening and the clear material baffle plate 46 for closing described residue-removing opening, and clear material baffle plate 46 is with hinged or to be spirally connected or the mode of clamping is detachably connected on feed pipe 4.In Fig. 1, Fig. 2 and Fig. 6, residue-removing opening all expected clearly baffle plate 46 block.To open during clear material and expect baffle plate 46 clearly, be cleared up the iron class impurity be adsorbed on feed pipe tube wall by residue-removing opening.

During charging, magnetic separation electromagnet 44 is energized, and the iron class impurity in material is attracted on electromagnet 44 feed pipe 4.When periodically cleaning is safeguarded, open and expect baffle plate 46 clearly, iron class impurity is taken out.The fine impurities be adsorbed on feed pipe 4 tube wall is not easily removed, and at this moment can close electromagnet 44, and tiny iron class impurity is no longer adsorbed on tube wall, thus convenient taking-up.Why not being electromagnet 44 power-off at the very start, is that after avoiding power-off, the impurity be adsorbed on feed pipe 4 falls bottom and pressing screw assembly junction, thus causes being difficult to take out.

Overflow oil pipe 33 upper end and stretch into bearing chamber and higher than the bottom surface of bearing chamber, like this, when oil level only in bearing chamber is higher than spilling oil pipe 33, lubricating oil just can overflow in the oil pocket 34 of cooling heat transferring case 24 by overflowing oil pipe 33, ensure that the lubricating oil in bearing chamber has certain liquid level, thus ensure that main shaft 22 and bearing 30 are in always and lubricate good state, prevent insufficient lubrication, produce phenomenons such as rubbing, overheated.

Magnetic separation electromagnet 44(or permanent magnet), oil filter 39, flange arrangement 45, spiral buckle and eye-splice etc. be routine techniques, concrete structure no longer describes in detail.

Described pressing screw 10 comprises some pressing screw sections in a tubular form, and between adjacent pressing screw section, buckle links together; Described screw rod 11 of wearing runs through all pressing screw sections of all pressing screw Duan Bingyu and is threaded.

Pressing screw 10 front end is connected to transmit larger moment of torsion to transmit larger moment of torsion with main shaft 22 by buckle structure, buckle structure can any one optionally in following two kinds of structures: 1. as shown in Figure 10, buckle structure comprises the spiral buckle that is arranged on pressing screw 10 front end and is arranged on the spiral buckle of main shaft 22 rear end, the spiral buckle of main shaft 22 rear end and the spiral buckle of pressing screw 10 front end mutually adaptive.

2. as shown in figure 11, pressing screw 10 front end is connected to transmit larger moment of torsion to transmit larger moment of torsion with main shaft 22 by buckle structure, buckle structure comprises the eye-splice being arranged on pressing screw 10 front end and the eye-splice being arranged on main shaft 22 rear end, the eye-splice of main shaft 22 rear end and the eye-splice of pressing screw 10 front end mutually adaptive.

Described big belt pulley 6 and small belt pulley 7 and driving belt are covered with pulley cover 47, to protect belt gear.Described bearing 30 is thrust bearing 30 or pressure bearing 30.Axial force larger during to adapt to work.

Wherein, the water cavity 35 of cooling heat transferring case 24 can be connected on (now described external water inlet pipe and external outlet pipe are the water supply line of factory) on the water supply line of factory above by its water inlet 40 and delivery port 41, water inlet 40 can certainly be made to be connected to (water supply line is as external water inlet pipe) on the water supply line of factory, and to make delivery port 41 connect external drainage pipeline (drainage pipeline is as external outlet pipe).Thermometer 16 is used for monitoring the operating temperature in grain bulking machine.The front end external diameter of expansion control head 20 is less than the front inner diameter of discharging opening 18, and the rear end external diameter of expansion control head 20 is greater than the front inner diameter of discharging opening 18 and is less than the back end inside diameter of discharging opening 18; Like this, expansion control head 20 can stretch into flaring discharging opening 18.Expansion control head 20 is regulated to stretch into the front and back position of discharging opening 18, can the width of tapping channel 21.See accompanying drawing 5, the position of expansion control head 20 is more forward, and tapping channel 21 is narrower, and more rearward, tapping channel 21 is wider in the position of expansion control head 20.Therefore, by controlling the front and back position of expansion control head 20, the thickness degree after material process can be controlled.

Front helixseal and rear screw sealing rotary to contrary and all when main shaft rotates to propelling movement lubricating oil in direction in the middle part of bearing chamber, main shaft rotation at work can be utilized, lubricating oil is brought in the middle part of bearing chamber, prevent lubricating oil from flowing out bearing chamber along main shaft, compared with traditional sealing ring, there is better sealing effectiveness.

The setting of clear material baffle plate, is convenient to remove magnetic separation out and the iron class impurity be adsorbed on feed pipe tube wall.Adopt electromagnet, then clean the tiny iron class impurity be adsorbed on feed pipe tube wall after the power-off of convenient electromagnetic iron.Feed pipe is in the shape of the letter V, and material to be reduced by hourly velocity turning back; Add that the tube wall lateral surface of every section of V-shaped feed pipe is equipped with magnetic separation electromagnet, be conducive to by the magnetic separation of more iron class impurity out.Connecting screw rod is positioned at the axis place of main shaft and pressing screw and is threaded with pressing screw, and such connected mode is extremely convenient to pressing screw and main shaft to link together, and removes also very convenient.

Pressing screw front end is connected with main shaft by buckle structure, adapts to transmit the needs compared with high pulling torque, and is convenient to very much connect.Bearing is thrust bearing or pressure bearing, axial force larger when can adapt to work.

During use, starter motor 9, material (as the grain such as corn, soybean) is dropped into by charging aperture, material falls into squeezing thorax 3 after V-shaped feed pipe 4 is turned back, be energized when electromagnet 44(works) in, iron class impurity in material is adsorbed onto on the tube wall of feed pipe 4 by electromagnet 44, prevents iron class impurity from falling into and squeezes thorax 3 thus affect crudy.After motor 9 starts, drive pressing screw 10 to rotate by belt transmission, pressing screw 10 drives the spiral pushing blade 12 on it to rotate integrally.

After material falls into and squeezes thorax 3, spiral pushing blade 12 promotes material and moves by after forward direction in rotation.Because the pitch of spiral pushing blade 12 reduces gradually by after forward direction, therefore in rotation, during spiral pushing material, material is increased gradually by the amount compressed, and pressure raises gradually, is conducive to carrying out smoothly of puffing process.Material, in moving process, being stirred gear stick 13 and stopping in time stirring gear stick 13, thus is stirred, material is distributed more even, promote processing quality.

Connecting screw rod 23 connects pressing screw 10 and main shaft 22 in the axial direction, and buckle structure connects pressing screw 10 and main shaft 22 diametrically, makes to be suitable for transmitting comparatively high pulling torque between pressing screw 10 and main shaft 22, is also not easy to damage after long-term work.This syndeton is also convenient to connect and dismounting very much.

After motor 9 starts, start scavenge oil pump 37, the oil in oil pocket 34 is by entering bearing chamber after oil filter 39, oil inlet pipe 38, scavenge oil pump 37 and oil return pipe 36.When the oil level in bearing chamber is higher than spilling oil pipe 33, lubricating oil flows into oil pocket 34 downwards again through overflowing oil pipe, and when flowing through profit dividing plate 26, with the water generation heat exchange in water cavity 35 and being lowered the temperature.Lubricating oil after cooling is drawn back bearing chamber by scavenge oil pump again, thus prevents the high oil temperature of lubricating oil in bearing chamber from bringing harm.

The setting of thermometer 16 and Pressure gauge 17, is convenient to the expanded front temperature and pressure of material in monitoring work, thus regulates the course of work more accurately, improve expansion effect.When material is pushed to discharging opening 18 by spiral pushing blade 12, be inflated control head 20 and stop, discharging boot 8 can only be entered by tapping channel 21.When material enters discharging boot 8, pressure reduces rapidly, is the moisture instant vaporization of superheat state thus violent explosion occurs, material is obtained expanded in material (grain grain).

Above embodiment is the unrestricted the technical solution of the utility model in order to explanation only, although be described in detail the utility model with reference to above-described embodiment, those of ordinary skill in the art is to be understood that: still can modify to the utility model or equivalent replacement, and not departing from any modification or partial replacement of spirit and scope of the present utility model, it all should be encompassed in the middle of right of the present utility model.

Claims (3)

1. be provided with the grain bulking machine of head cooling body, comprise support, support is connected with columnar squeezing thorax by some spaced bracing frames, and squeezing thorax one end is feed end and the other end is discharge end; The feed end squeezing thorax is upwards communicated with feed pipe, and the top of feed pipe is provided with charging aperture; So that to squeeze thorax feed end side be on front side of it and to squeeze thorax discharge end side on rear side of it, be provided with motor on front side of support, the output shaft of motor is provided with small belt pulley, it is characterized in that:

Small belt pulley is connected with big belt pulley by driving belt; Squeeze in the inner chamber of thorax and be provided with pressing screw assembly, pressing screw assembly comprises pressing screw in a tubular form, is equipped with screw rod in pressing screw, and pressing screw outer wall is provided with spiral pushing blade; The pitch of described spiral pushing blade reduces gradually by after forward direction;

To squeeze the axially middle part of thorax for boundary, squeeze thorax front portion and be provided with some steam inlet tubes, the outer end of steam inlet tube protrudes upward squeezing thorax, and the inner of steam inlet tube is stretched into and squeezed thorax and be connected with squeezing thorax; Squeeze thorax back segment and be provided with thermometer; Squeeze thorax back segment and be connected with Pressure gauge, Pressure gauge protrudes upward squeezing thorax;

Squeeze thorax rear end and be fixedly connected with discharging opening, discharging opening is rear large front little toroidal, and discharging opening is connected with discharging boot, and discharging boot is provided with hydraulic cylinder, and the front end of hydraulic cylinder piston rod is provided with the expansion control head in rear large front little taper type; The front end external diameter of expansion control head is less than the front inner diameter of discharging opening, and the rear end external diameter of expansion control head is greater than the front inner diameter of discharging opening and is less than the back end inside diameter of discharging opening; Expansion control head stretches into discharging opening and also and between the inwall of discharging opening forms annular tapping channel;

Described pressing screw with main shaftto be coaxially set and the two is linked together by connecting screw rod;

The centre bore of big belt pulley is connected with the outer rim key of described main shaft; Support front end is provided with cooling heat transferring case, and the top of cooling heat transferring case is provided with support, and main shaft is connected on support by bearing and bearing block;

In cooling heat transferring case by front upper to after have a down dip and be provided with profit dividing plate, cooling heat transferring case is divided into oil pocket and water cavity by profit dividing plate; The two sides of described profit dividing plate are evenly connected with the heat transfer floor that some cross sections are Y type respectively, and heat transfer floor comprises the heat transfer connecting plate be connected on profit dividing plate, and the free end of heat transfer connecting plate is connected with V-shaped heat sink; Heat transfer connecting plate is provided with through hole;

The front-end and back-end of bearing block are respectively equipped with bearing (ball) cover, and former and later two bearing (ball) covers, bearing block and main shaft surround the bearing chamber installing described bearing, are marked with lubricating oil in bearing chamber; Be connected with spilling oil pipe between bearing chamber and described oil pocket, overflow oil pipe upper end and stretch into bearing chamber and higher than the bottom surface of bearing chamber, the top of oil pocket is stretched in the lower end of overflowing oil pipe; Described bearing chamber is connected with oil return pipe, and oil return pipe is connected with scavenge oil pump, and the oil inlet pipe of scavenge oil pump stretches into the bottom of described oil pocket downwards and is connected with oil filter; Be provided with the water inlet for connecting external water inlet pipe bottom described water cavity, described water cavity top is provided with the delivery port for connecting external outlet pipe.

2. the grain bulking machine being provided with head cooling body according to claim 1, is characterized in that: described squeezing thorax comprises some squeezing thorax sections, is linked together between adjacent squeezing thorax section by flange arrangement.

3. the grain bulking machine being provided with head cooling body according to claim 1, is characterized in that: described pressing screw comprises some pressing screw sections in a tubular form, and between adjacent pressing screw section, buckle links together; Described screw rod of wearing runs through all pressing screw sections of all pressing screw Duan Bingyu and is threaded.