CN215531429U - Donkey-hide gelatin cooking filtration pretreatment system - Google Patents

Abstract

The utility model relates to the technical field of donkey-hide gelatin production, in particular to a donkey-hide gelatin cooking and filtering pretreatment system, wherein a liquid discharge pipe and an air outlet pipe are respectively arranged at two sides of a filter plate, so that a gelatin juice is mainly led out by the liquid discharge pipe, the air outlet pipe is mainly used for heating and cooking donkey skin to melt the donkey skin into the gelatin juice, the occurrence of the phenomenon that the taste is influenced by gelatinization of the gelatin juice can be greatly reduced, impurities adsorbed on the filter plate can be washed and removed by a backwashing mode through arranging a backwashing liquid inlet and a backwashing liquid outlet, the filtering effect of the filter plate is improved, the problems that the heating time of one side of the donkey skin is obviously shorter than that of one side of the gelatin juice and the gelatin juice is easy to flow out when the gelatin juice enters due to the occurrence of the phenomenon of the gelatinization of the existing donkey skin in the existing donkey-hide gelatin cooking and filtering system adopts an open negative pressure filter, and the gelatin juice is easy to adhere to dust or powder scraps floating in the air in the long-term use, influence the clarity of the subsequent donkey-hide gelatin.

Description

Donkey-hide gelatin cooking filtration pretreatment system

Technical Field

The utility model relates to the technical field of donkey-hide gelatin production, in particular to a donkey-hide gelatin cooking and filtering pretreatment system.

Background

In the production of donkey-hide gelatin, donkey skin needs to be steamed at high temperature, and simultaneously, the donkey skin is mixed and stirred to be melted to form viscous gelatin juice, and then the donkey-hide gelatin with high medical value is formed by processes such as filtration, compression and the like.

The existing donkey-hide gelatin cooking and filtering pretreatment system mainly comprises a spherical digester part and a filtering part, wherein the spherical digester part finds that a liquid discharge pipe and an air inlet pipe are arranged at the same side in the spherical digester in use, the glue is repeatedly heated by most of the time of steam which can lead to discharge, the heating time of one side of donkey hide is obviously shorter than that of one side of the glue, the phenomenon of glue gelatinization happens occasionally, the filtering part finds that the glue flows out easily when the glue enters by adopting an open negative pressure filter in use, and meanwhile, the glue is easy to adhere to dust or powder scraps floating in the air in long-term use, so that the clarity of subsequent donkey-hide gelatin is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a donkey-hide gelatin cooking and filtering pretreatment system aiming at the problems.

The technical scheme is that the donkey-hide gelatin cooking and filtering pretreatment system comprises a rotary spherical digester for donkey-hide gelatin production and a donkey-hide gelatin filtering device, wherein the glue juice discharging end of the rotary spherical digester for donkey-hide gelatin production is communicated with the feeding end of the donkey-hide gelatin filtering device, the rotary spherical digester for donkey-hide gelatin production comprises a spherical digester body, a first support frame and a second support frame, the first support frame and the second support frame are arranged on two sides of the spherical digester body, the spherical digester body can be driven by the first support frame and the second support frame to rotate, a feeding hole is formed in the top of the spherical digester body, a discharging hole is formed in the bottom of the spherical digester body, a filter plate is arranged in the spherical digester body and divides the interior of the spherical digester body into a first cavity and a second cavity, a liquid discharge pipe and a liquid discharge pipe are arranged in the spherical digester body, the liquid discharge pipe is positioned on one side of the spherical digester body close to the discharging hole, a backwashing liquid inlet and a backwashing liquid outlet pipe is positioned on one side of the spherical digester body close to the feeding hole, the backwashing liquid inlet is positioned at one side of the spherical steaming body close to the discharge port, and the backwashing liquid outlet is positioned at one side of the spherical steaming body close to the feed port; the donkey-hide gelatin filter equipment includes negative pressure filter and graded filter, the feed end of graded filter and the transfer line intercommunication of glue juice, graded filter's play liquid end passes through the connecting pipe and communicates with the feed end of negative pressure filter, negative pressure filter's play liquid end passes through negative pressure pipe and vacuum pump intercommunication, wherein the negative pressure filter top is provided with the negative pressure filter top cap, and seted up the steady voltage mouth on the negative pressure filter top cap, be provided with unloading extrusion mechanism and negative pressure filter screen in the negative pressure filter, unloading extrusion mechanism is located between negative pressure filter top cap and negative pressure filter screen, and the glue juice that inputs to negative pressure filter from graded filter gets into the unloading extrusion mechanism earlier and passes through the temporary storage chamber of negative pressure filter lower part in the negative pressure filter again.

Optionally, a driven shaft is arranged on the first support frame, and one end of the driven shaft is connected with the spherical steaming body.

Furthermore, an infusion tube connected with a liquid discharge tube penetrates through the driven shaft.

Optionally, a driving shaft and a motor are arranged on the second support frame, the motor can drive the driving shaft to rotate through a gear, and one end of the driving shaft is connected with the spherical steaming body.

Optionally, a gas pipe connected with the gas outlet pipe penetrates through the driving shaft.

Optionally, the spherical steaming body is provided with a safety valve, and the safety valve is covered with a protective cover.

Furthermore, a parameter display screen and an observation window are arranged on the surface of the spherical steamer.

Optionally, the unloading extrusion mechanism is including placing the roof beam, the rotating electrical machines, the rotation axis, stripper plate and a pair of side flitch, a pair of side flitch symmetry sets up in the both sides of negative pressure filter, and the side flitch top is located the top of negative pressure filter top cap, place the roof beam and erect on the side flitch, the rotating electrical machines is located and is placed on the roof beam, and the power take off end of rotating electrical machines with insert the rotation axis of negative pressure filter and be connected, the stripper plate is connected with the rotation axis, and the stripper plate is located between negative pressure filter top cap and negative pressure filter screen.

Further, the vertical projection at the vertical projection of rotation axis and the vertical projection at negative pressure filter center overlap, and negative pressure filter screen below is provided with the backup pad with the contact of negative pressure filter inner wall, has seted up liquid through hole in the backup pad, and the stripper plate bottom contacts with the negative pressure filter screen, and the stripper plate is provided with the inclined groove along the direction of rotation, extrudees the glue juice and moves towards the negative pressure filter screen.

Optionally, a graded filtering top cover is arranged on the graded filter, a first filter screen and a second filter screen are arranged in the graded filter from top to bottom, and the mesh number of the first filter screen is smaller than that of the second filter screen.

The beneficial effects of the utility model at least comprise one of the following;

1. through locating the both sides of filter plate respectively with fluid-discharge tube and outlet duct for the fluid-discharge tube mainly exports the glue juice, and the outlet duct is mainly concentrated and is heated the cooking to the donkey hide and make it melt for the glue juice, can reduce substantially that the phenomenon that gelatinization influences the taste takes place for the glue juice appears.

2. Through setting up backwash inlet and backwash liquid outlet make can wash away the clearance through the mode of backwash with absorbent impurity on the filter plate, improve the filter effect of filter plate.

3. Through the arrangement of the negative pressure filter with the negative pressure filter top cover, the top of the negative pressure filter is sealed, and the glue juice can not overflow after flowing into the negative pressure filter.

4. The problem of among the current donkey-hide gelatin pretreatment filtration system, the same one side in the rotary spherical digester is located to rotary spherical digester drain pipe and intake pipe, will lead to exhaust steam most time to heat the glue juice repeatedly, and donkey hide one side heating time obviously is less than glue juice one side, the occasional phenomenon that has the glue juice gelatinization takes place the problem that the filter equipment adopted open negative pressure filter to make the glue juice outflow easily appear when getting into simultaneously, glue juice easily takes place the adhesion with floating dust or cuttings in the air simultaneously in long-term use, influence the problem of follow-up donkey-hide gelatin clarity.

Drawings

FIG. 1 is a schematic view of a system for pre-treatment of donkey-hide gelatin cooking and filtration;

FIG. 2 is a schematic perspective view of a rotary spherical digester;

FIG. 3 is a schematic view of a structure of one side of a rotary spherical digester;

FIG. 4 is a schematic view of the internal structure of the rotary spherical digester;

FIG. 5 is a schematic view of a filter device;

FIG. 6 is a schematic view of the internal structure of the filtration apparatus;

FIG. 7 is a schematic view of a negative pressure filter;

FIG. 8 is a schematic view of the structure of the extrusion plate;

labeled as: 1 is a spherical steaming body, 2 is a first support frame, 3 is a second support frame, 4 is a feed inlet, 5 is a discharge outlet, 6 is a motor, 7 is donkey hide, 8 is a transfusion tube, 9 is a gas transmission tube, 10 is a liquid discharge tube, 11 is a gas outlet tube, 12 is a driven shaft, 13 is a safety valve, 14 is a protective cover, 15 is a backwashing liquid outlet, 16 is a filter plate, 17 is a backwashing liquid inlet, 18 is a backwashing liquid outlet tube, 19 is a backwashing liquid inlet tube, 20 is a parameter display screen, 21 is an observation window, 22 is a driving shaft, 30 is a negative pressure filter, 31 is a first graded filter, 32 is a second graded filter, 33 is a first glue connecting tube, 34 is a second glue connecting tube, 35 is a side pasting plate, 36 is a negative pressure filter top cover, 37 is a pressure stabilizing port, 38 is a placing beam, 39 is a rotary motor, 40 is a negative pressure tube, 41 is a vacuum pump, 42 is a temporary storage cavity, 43 is a negative pressure filter screen, 44 is a support plate, a vacuum pump is a vacuum pump, a vacuum pump is a vacuum pump, a vacuum pump is a vacuum pump, a vacuum pump is a vacuum pump, a vacuum pump is arranged in a vacuum pump, a vacuum pump is arranged in a vacuum pump, 45 is a first filter screen, 46 is a second filter screen, 47 is a filtrate cavity, 48 is a graded filter top cover, 49 is an extrusion plate, 50 is a rotating shaft, 51 is a first inclined groove, and 52 is a second inclined groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the scope of the utility model.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention; the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 8, the donkey-hide gelatin cooking and filtering pre-treatment system comprises a rotary spherical digester for donkey-hide gelatin production and a donkey-hide gelatin filtering device, wherein the gelatin juice discharging end of the rotary spherical digester for donkey-hide gelatin production is communicated with the feeding end of the donkey-hide gelatin filtering device, the rotary spherical digester 1 for donkey-hide gelatin production comprises a spherical digester 1, a first support frame 2 and a second support frame 3, the first support frame 2 and the second support frame 3 are arranged at two sides of the spherical digester 1, the spherical digester 1 can be driven by the first support frame 2 and the second support frame 3 to rotate, the top of the spherical digester 1 is provided with a feeding port 4, the bottom of the spherical digester 1 is provided with a discharging port 5, the spherical digester 1 is internally provided with a filter plate 16, the filter plate 16 divides the inside of the spherical digester 1 into a first cavity and a second cavity, the spherical digester 1 is internally provided with a liquid discharging pipe 10 and a liquid discharging pipe 11, the liquid discharging pipe 10 is arranged at one side of the spherical digester 1 close to the discharging port 5, the spherical digester 1 is provided with a backwashing liquid inlet 17 and a backwashing liquid outlet 15, the air outlet pipe 11 is positioned on one side of the spherical steaming body 1 close to the feed inlet 4, the backwashing liquid inlet 17 is positioned on one side of the spherical steaming body 1 close to the discharge outlet 5, and the backwashing liquid outlet 15 is positioned on one side of the spherical steaming body 1 close to the feed inlet 4; the donkey-hide gelatin filter equipment includes negative pressure filter 30 and hierarchical filter, the feed end of hierarchical filter communicates with the transfer line of glue juice, the play liquid end of hierarchical filter communicates with the feed end of negative pressure filter 30 through the connecting pipe, the play liquid end of negative pressure filter 30 communicates with vacuum pump 41 through negative pressure pipe 40, wherein negative pressure filter 30 top is provided with negative pressure filter top cap 36, and seted up steady voltage mouth 37 on the negative pressure filter top cap 36, be provided with unloading extrusion mechanism and negative pressure filter screen 43 in the negative pressure filter 30, unloading extrusion mechanism is located between negative pressure filter top cap 36 and negative pressure filter screen 43, and the glue juice that inputs to negative pressure filter 30 from hierarchical filter gets into unloading extrusion mechanism earlier and gets into in the chamber of keeping in 42 of negative pressure filter 30 lower part through negative pressure filter screen 43.

The purpose of design is that the both sides through locating the filter plate respectively with fluid-discharge tube and outlet duct for the fluid-discharge tube mainly derives the glue juice, and the outlet duct is mainly concentrated and is heated the donkey hide and cook and make it melt for the glue juice, can reduce the glue juice by a wide margin and appear the phenomenon emergence that gelatinization influences the taste. Through setting up backwash inlet and backwash liquid outlet make can wash away the clearance through the mode of backwash with absorbent impurity on the filter plate, improve the filter effect of filter plate.

Through the arrangement of the negative pressure filter with the negative pressure filter top cover, the top of the negative pressure filter is sealed, and the glue juice can not overflow after flowing into the negative pressure filter. The problem of among the current donkey-hide gelatin pretreatment filtration system, the same one side in the rotary spherical digester is located to rotary spherical digester drain pipe and intake pipe, will lead to exhaust steam most time to heat the glue juice repeatedly, and donkey hide one side heating time obviously is less than glue juice one side, the occasional phenomenon that has the glue juice gelatinization takes place the problem that the filter equipment adopted open negative pressure filter to make the glue juice outflow easily appear when getting into simultaneously, glue juice easily takes place the adhesion with floating dust or cuttings in the air simultaneously in long-term use, influence the problem of follow-up donkey-hide gelatin clarity.

In the in-service use, the user puts into the spherical donkey hide 7 through the feed inlet and evaporates the body in, the donkey hide is blockked by the filter plate, then close feed inlet and discharge gate, to the leading-in high temperature steam of outlet duct, make the spherical internal high temperature high pressure environment that forms of evaporating, thereby the donkey hide melts into and glues thick glue juice, at this moment, the filter plate carries out prefilter to glue juice, partly obvious unable debris that pass through blocks, glue juice assembles under the filter plate, finally export other processes to through the fluid-discharge tube, and other debris that can pass through the filter plate are discharged by the discharge gate. In actual use, the glue juice prepared by the rotary spherical digester firstly flows into the grading filter for grading filtration, then is conveyed into the negative pressure filter through the glue juice conveying pipe, completes the negative pressure filtration under the action of the vacuum pump, and then is discharged from the negative pressure pipe.

It should be noted that the pressure stabilizing port provided in the present embodiment is used for stabilizing the pressure of the negative pressure filter when the vacuum pump is operated.

Meanwhile, when backwashing is carried out, the feed inlet and the discharge outlet are also closed, the backwashing liquid inlet pipe 19 is inserted into the backwashing liquid inlet, the inside of the spherical box body is cleaned by leading-in cleaning liquid, the cleaning liquid passes through the other side of the filter plate, one part of sundries trapped in the gap of the filter plate are jacked up, then the backwashing liquid outlet pipe 18 is inserted into the backwashing liquid outlet and is buried under the liquid level of the cleaning liquid, the cleaning liquid is pumped out under the action of an external power source such as a liquid pump, and meanwhile, most of sundries are taken away, and the residual cleaning liquid is discharged from the discharge outlet.

In this embodiment, a driven shaft 12 is arranged on the first support frame 2, one end of the driven shaft 12 is connected with the spherical steaming body 1, a liquid conveying pipe 8 connected with the liquid discharge pipe 10 penetrates through the driven shaft 12, a driving shaft 22 and a motor 6 are arranged on the second support frame 3, the motor 6 can drive the driving shaft 22 to rotate through a gear, one end of the driving shaft 22 is connected with the spherical steaming body 1, and a gas conveying pipe 9 connected with the gas outlet pipe 11 penetrates through the driving shaft 22.

The aim at of design like this, through driven shaft and the driving shaft that sets up, make the sphere evaporate the body and take place the rotation under the drive of motor and gear to the donkey hide can distribute more evenly, avoids being located the donkey hide on surface and has melted and the donkey hide that is located the lower floor still keeps the original state.

Meanwhile, the whole spherical steaming body rotates according to a certain frequency, and the rotation is not always kept in a rotating state, so that the donkey skin is uniformly mixed.

In this embodiment, the spherical steaming body 1 is provided with a safety valve 13, and the safety valve 13 is covered with a protective cover 14.

The purpose of the design is that the safety valve can balance the air pressure in the whole spherical steaming body, so that the spherical steaming body tends to a safe environment.

In this embodiment, the surface of the spherical steaming body 1 is provided with a parameter display screen 20 and an observation window 21.

The purpose of design like this lies in, can observe the interior necessary parameter of whole spherical steaming body through the parameter display screen that sets up, and the observation window that sets up is then convenient for the user to observe the state of donkey skin in the rotary spherical steaming body to carry out manual intervention to some emergency.

It should be noted that, in this embodiment, a person skilled in the art generally selects high temperature and high pressure resistant glass, and in order to obtain the internal parameters of the spherical digester, the person skilled in the art can automatically complete the setting of the parameter display screen according to the existing sensor and by combining the disclosed connection rule of the electrical components.

In this embodiment, a specific structure of the blanking extrusion structure is provided, wherein the blanking extrusion mechanism includes a placing beam 38, a rotating motor 39, a rotating shaft 50, an extrusion plate 49 and a pair of side attachment plates 35, the pair of side attachment plates 35 are symmetrically disposed at two sides of the negative pressure filter 30, the top of the side attachment plate 35 is located above the negative pressure filter top cover 36, the placing beam 38 is erected on the side attachment plates 35, the rotating motor 39 is disposed on the placing beam 38, the power output end of the rotating motor 39 is connected with the rotating shaft 50 inserted into the negative pressure filter 30, the extrusion plate 49 is connected with the rotating shaft 50, the extrusion plate 49 is located between the negative pressure filter top cover 36 and the negative pressure filter screen 43, and the vertical projection of the rotating shaft 50 overlaps the vertical projection of the center of the negative pressure filter 30.

The purpose of design like this is through setting up the unloading extrusion mechanism that comprises placing roof beam 38, rotating electrical machines 39, rotation axis 50, stripper plate 49 and a pair of side flitch 35, can assist the negative pressure filter to filter, and wherein rotating electrical machines drives the rotation axis when rotatory, drives the stripper plate and rotates together for glue juice removes towards the negative pressure filter screen, filters.

In this embodiment, a support plate 44 contacting the inner wall of the negative pressure filter 30 is disposed below the negative pressure strainer 43, and the support plate 44 is provided with liquid permeable holes.

The purpose of design like this is that, the support to the negative pressure filter screen is realized through the backup pad that sets up to can deal with the suction effect of vacuum pump, when needing to point out, the vacuum pump was selected for use among the embodiment is current conventional vacuum pump, and it must have corresponding exhaust duct etc. and only not shown in the figure.

Meanwhile, the glue juice passing through the negative pressure filter screen enters the temporary storage cavity through the liquid permeable holes in the supporting plate or is discharged through the negative pressure pipe.

In this embodiment, the bottom of the squeezing plate 49 contacts with the negative pressure filter screen 43, and the squeezing plate 49 is provided with an inclined groove along the rotation direction, so that the squeezed glue moves towards the negative pressure filter screen 43.

In general, the inclined grooves include a first inclined groove 51 and a second inclined groove 52, and the two inclined grooves are respectively located at both sides of the pressing plate, and when the pressing plate rotates, the glue is pressed by the inclined grooves to move toward the negative pressure filter, thereby assisting the vacuum pump.

In this embodiment, a graded filter top cover 48 is arranged on the graded filter, a first filter screen 45 and a second filter screen 46 are arranged in the graded filter from top to bottom, and the mesh number of the first filter screen 45 is smaller than that of the second filter screen 46.

It should be noted that, in order to improve the overall working efficiency, the classification filter usually adopts a dead-weight passive filtration mode, and the negative pressure filter adopts an active vacuum pump for filtration, so that a single negative pressure filter can work with multiple classification filters, as shown in fig. 1 and 2, a negative pressure filter is used with two classification filters, namely a first classification filter 31 and a second classification filter 32, and each classification filter is provided with a classification filter top cover 48, and the first classification filter 31 is communicated with the negative pressure filter through a first glue juice connecting pipe 33, and the second classification filter 32 is communicated with the negative pressure filter through a second glue juice connecting pipe 34.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the utility model.

Claims (10)

1. Donkey-hide gelatin is cooked and is filtered pretreatment system, including donkey-hide gelatin production with rotary spherical digester and donkey-hide gelatin filter equipment, and the glue juice discharge end of rotary spherical digester for donkey-hide gelatin production communicates its characterized in that with donkey-hide gelatin filter equipment's feed end: the spherical steaming ball for donkey-hide gelatin production comprises a spherical steaming body (1), a first support frame (2) and a second support frame (3), wherein the first support frame (2) and the second support frame (3) are arranged on two sides of the spherical steaming body (1), the spherical steaming body (1) can be driven by the first support frame (2) and the second support frame (3) to rotate, a feed inlet (4) is formed in the top of the spherical steaming body (1), a discharge outlet (5) is formed in the bottom of the spherical steaming body (1), a filter plate (16) is arranged in the spherical steaming body (1), the filter plate (16) divides the interior of the spherical steaming body (1) into a first cavity and a second cavity, a liquid discharge pipe (10) and an air outlet pipe (11) are arranged in the spherical steaming body (1), the liquid discharge pipe (10) is positioned on one side of the spherical steaming body (1) close to the discharge outlet (5), a backwashing liquid inlet (17) and a backwashing liquid outlet (15) are arranged on the spherical steaming body (1), the air outlet pipe (11) is positioned on one side of the spherical steaming body (1) close to the feed port (4), the backwashing liquid inlet (17) is positioned on one side of the spherical steaming body (1) close to the discharge port (5), and the backwashing liquid outlet (15) is positioned on one side of the spherical steaming body (1) close to the feed port (4); the donkey-hide gelatin filtering device comprises a negative pressure filter (30) and a grading filter, the feed end of the grading filter is communicated with a glue solution infusion tube, the liquid outlet end of the grading filter is communicated with the feed end of the negative pressure filter (30) through a connecting tube, the liquid outlet end of the negative pressure filter (30) is communicated with a vacuum pump (41) through a negative pressure pipe (40), wherein the top of the negative pressure filter (30) is provided with a negative pressure filter top cover (36), a pressure stabilizing port (37) is arranged on the top cover (36) of the negative pressure filter, a blanking extrusion mechanism and a negative pressure filter screen (43) are arranged in the negative pressure filter (30), the blanking extrusion mechanism is positioned between the negative pressure filter top cover (36) and the negative pressure filter screen (43), and the glue juice input into the negative pressure filter (30) from the grading filter firstly enters the blanking extrusion mechanism and then enters the temporary storage cavity (42) at the lower part of the negative pressure filter (30) through the negative pressure filter screen (43).

2. The donkey-hide gelatin cooking filtration pretreatment system of claim 1, wherein: a driven shaft (12) is arranged on the first support frame (2), and one end of the driven shaft (12) is connected with the spherical steaming body (1).

3. The donkey-hide gelatin cooking filtration pretreatment system of claim 2, wherein: an infusion tube (8) connected with the liquid discharge tube (10) passes through the driven shaft (12).

4. The donkey-hide gelatin cooking filtration pretreatment system of claim 3, wherein: the second support frame (3) is provided with a driving shaft (22) and a motor (6), the motor (6) can drive the driving shaft (22) to rotate through a gear, and one end of the driving shaft (22) is connected with the spherical steaming body (1).

5. The donkey-hide gelatin cooking filtration pretreatment system of claim 4, wherein: the air pipe (9) connected with the air outlet pipe (11) penetrates through the driving shaft (22).

6. The donkey-hide gelatin cooking filtration pretreatment system of claim 5, wherein: the spherical steaming body (1) is provided with a safety valve (13), and the safety valve (13) is covered with a protective cover (14).

7. The donkey-hide gelatin cooking filtration pretreatment system of claim 6, wherein: the surface of the spherical steaming body (1) is provided with a parameter display screen (20) and an observation window (21).

8. The donkey-hide gelatin cooking filtration pretreatment system of claim 1, wherein: unloading extrusion mechanism is including placing roof beam (38), rotating electrical machines (39), rotation axis (50), stripper plate (49) and a pair of side flitch (35), and is a pair of side flitch (35) symmetry sets up in the both sides of negative pressure filter (30), and side flitch (35) top is located the top of negative pressure filter top cap (36), it erects on side flitch (35) to place roof beam (38), rotating electrical machines (39) are located and are placed roof beam (38), and the power take off end of rotating electrical machines (39) is connected with rotation axis (50) of inserting negative pressure filter (30), stripper plate (49) are connected with rotation axis (50), and stripper plate (49) are located between negative pressure filter top cap (36) and negative pressure filter screen (43).

9. The donkey-hide gelatin cooking filtration pretreatment system of claim 8, wherein: the vertical projection of rotation axis (50) overlaps with the vertical projection at negative pressure filter (30) center, and negative pressure filter screen (43) below is provided with backup pad (44) with negative pressure filter (30) inner wall contact, seted up liquid hole on backup pad (44), stripper plate (49) bottom and negative pressure filter screen (43) contact, and stripper plate (49) are provided with the inclined groove along the direction of rotation, and the extrusion glue juice moves towards negative pressure filter screen (43).

10. The donkey-hide gelatin cooking filtration pretreatment system of claim 9, wherein: be provided with hierarchical filtration top cap (48) on the classifying filter, be provided with first filter screen (45) and second filter screen (46) from last to down in the classifying filter, the mesh number of first filter screen (45) is less than the mesh number of second filter screen (46).

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