CN108325995B

CN108325995B - Drying device and drying method

Info

Publication number: CN108325995B
Application number: CN201710037917.2A
Authority: CN
Inventors: 堀江晃弘
Original assignee: Hatagaii Co ltd
Current assignee: Hatagaii Co ltd
Priority date: 2017-01-19
Filing date: 2017-01-19
Publication date: 2021-07-06
Anticipated expiration: 2037-01-19
Also published as: CN108325995A

Abstract

The invention provides a drying treatment device capable of smashing dead livestock, which can reduce the environmental load near the device by preventing odor from mixing in waste gas, and can be made into fine and soft powder suitable for being used as feed or fertilizer for pigs with stout bones. The drying device is provided with: a heating chamber; a processing chamber; a stirring body disposed inside the processing chamber; a driving device for driving the stirring body to rotate; a primary combustion furnace for supplying heated air to the heating chamber; a process gas feed pipe for feeding a process gas containing an odor component and moisture generated in the process chamber to the primary combustion furnace; a pressurization control unit 8 provided in the process gas supply pipe, for controlling the flow rate of the process gas and maintaining the pressure in the process chamber at a desired pressure; and a secondary combustion furnace for performing deodorization by burning odor contained in the gas passing through the heating chamber before discharging the odor to the outside.

Description

Drying device and drying method

Technical Field

The present invention relates to a drying apparatus and a drying method. More specifically, the present invention relates to a drying treatment apparatus which can treat, sterilize and pulverize, for example, pigs slaughtered during raising due to infectious diseases at high temperature and high pressure, and in which the environmental load in the vicinity of the apparatus can be reduced by preventing odor from being mixed in exhaust gas discharged to the outside, and the drying treatment can be performed so as to form fine and soft powder even for pigs having thick bones, and the treated product thus produced can be suitably used as feed or fertilizer.

Background

In the animal husbandry for raising animals of the order of the cetacea (animals with an even number of hooves) such as pigs and cattle, it is important to prevent the occurrence of infectious diseases such as foot-and-mouth disease and to respond to the infectious diseases rapidly and carefully. Assuming that a pig in a certain pigsty is identified as a sick animal infected with foot-and-mouth disease, not only all pigs in the pigsty but also all domestic animals in the pigsty and the cowshed within a certain range specified by law in the vicinity of the pigsty are slaughtered and buried in a fixed site.

However, the infection of foot-and-mouth disease virus, particularly swine, is extremely strong, and it is difficult to prevent the spread of infection. That is, in order to perform the slaughtering as described above, a large number of persons, automobiles, and work vehicles must be moved, and even if sterilization is performed during the movement, it is difficult to reliably prevent infection in fact, and it is easy to fall into a passive state.

Further, the foot-and-mouth disease is naturally considered by the spread of birds, mice, and the like and the spread of the infection due to the air, but in order to prevent the spread of the infection due to the foot-and-mouth disease, it is most practical and effective to perform a slaughtering process independently for each pigsty and cowshed where sick livestock appear, without moving the personnel, automobiles, and work vehicles between the pigsties and cowsheds as much as possible, and then to perform a disposal process by burying the pigsty and the cowshed in the ground or burning the pigsty with a dedicated device, thereby cutting the infection route of the foot-and-mouth disease.

An apparatus for treating livestock that died during rearing as described above has been proposed by the present inventors in patent document 1. The conventional drying apparatus includes: the apparatus includes a processing chamber having an input portion and an output portion, an agitator provided in the processing chamber, a heating chamber for heating the processing chamber, and a combustion chamber for supplying heated air to the heating chamber to heat the processing chamber and simultaneously introducing and burning a processing gas in the processing chamber to deodorize the processing gas.

The stirring body has a rotating shaft driven in forward and reverse rotation directions, a feeding stirring section for conveying the object to be treated to one side in the treatment chamber while stirring the object, and a non-return section for making it difficult to return the object to be treated in the reverse direction, and a blade section for cutting or crushing the object to be treated is formed on an outer peripheral portion of the non-return section. Thus, the drying apparatus has a high pulverizing ability, and can pulverize not only dead chickens but also pigs having strong bones in a fine and uniform manner in the same manner as chickens, and can treat pigs slaughtered for infection with infectious diseases such as foot and mouth disease independently for each pigsty in which the affected animals are present.

Prior art documents

Patent document

Patent document 1: japanese patent laid-open No. 2012 and No. 102930

Disclosure of Invention

Problems to be solved by the invention

The conventional drying apparatus described above can efficiently perform drying processing for crushing dead livestock such as chicken and pigs, and is therefore useful as an apparatus for processing dead livestock in relatively large-scale chicken farms and pig farms. However, the following problems exist.

That is, in the drying apparatus, when the drying apparatus is operated to dry dead livestock or the like, the processing gas in the processing chamber is introduced into the combustion chamber and burned to deodorize, but depending on various conditions such as the outside air temperature during the operation, there is a tendency that the remaining odor cannot be completely deodorized and is discharged to the outside together with the exhaust gas.

Further, since the pressure in the treatment chamber cannot be adjusted particularly during operation and the pressure and temperature in the treatment chamber cannot be raised as high structurally, the drying treatment tends to take a relatively long time, and the treated product produced tends to be a powdery product having hard particles, and is somewhat difficult to use as a feed or a fertilizer.

(object of the invention)

The present invention has been made in view of the above problems, and an object of the present invention is to provide a drying apparatus and a drying method, which can treat, for example, pigs slaughtered during raising due to infectious diseases at high temperature and high pressure, sterilize and pulverize the pigs, prevent odor from being mixed into exhaust gas discharged to the outside, reduce environmental load in the vicinity of the apparatus, and dry the pigs having thick bones in a fine and soft powdery state, and produce a treated product suitable for use as feed and fertilizer.

Means for solving the problems

(1) In order to achieve the above object, a drying apparatus according to the present invention includes: a heating chamber; a process chamber provided inside the heating chamber and having end walls on both sides of the process chamber; a stirring body provided inside the treatment chamber and including a rotating shaft provided inside the treatment chamber and controlled to rotate in forward and reverse directions, a feeding stirring portion provided on the rotating shaft in a required number, the feeding stirring portion being configured to rotate with the rotation, and to convey the object to be treated in the treatment chamber in an axial direction of the rotating shaft while stirring the object to be treated while causing a tip portion of the feeding stirring portion to rotate along an inner surface of the treatment chamber, a plate-like non-return portion provided on the rotating shaft in a required number, the non-return portion rotating with the rotation such that the tip portion of the non-return portion approaches the inner surface of the treatment chamber, and when the object to be treated is conveyed toward one or the other end wall of the treatment chamber by the feeding stirring portion and the pressure thereof becomes high, the cutting part or the crushing part is provided on the rotating shaft by a required number, and the front end part of the cutting part or the crushing part moves in a rotating way to be close to the inner surface of the processing chamber along with the rotation; a drive device that rotationally drives the stirring body; a primary combustion furnace that supplies heating air to the heating chamber; a process gas supply unit configured to supply a process gas containing an odor component and moisture generated in the process chamber to the primary combustion furnace; a pressurization control unit provided in the process gas supply unit, for controlling a flow rate of a process gas to adjust a pressure in the process chamber to a desired pressure; and a secondary combustion furnace for performing deodorization treatment by the treatment gas in the treatment chamber.

The operation of the drying apparatus of the present invention will be described. First, at the start of operation, the heating chamber is heated by supplying heating air such as combustion gas from the primary combustion furnace to the heating chamber, and the stirring body is rotated by the driving device. Then, the object to be processed is introduced into the processing chamber.

At the beginning of the operation, the pressure control unit restricts the flow rate of the process gas supplied to the primary combustion furnace through the process gas supply unit, and maintains the pressure in the process chamber at a desired pressure to raise the temperature in the process chamber to a desired temperature. In this high-temperature and high-pressure state, the flow rate of the process gas to be supplied to the primary combustion furnace is not limited, and the operation is changed to a normal operation in which the pressure in the process chamber is supplied to the primary combustion furnace as it is.

On the other hand, the object to be processed, which is introduced into the processing chamber, is sequentially cut (or cut) by the cutting portions or the pulverizing portions provided in a required number on the rotating shaft of the stirring body in the high-temperature and high-pressure processing chamber, and is pulverized and thinned. The cutting or crushing is mainly performed at the bottom of the processing chamber due to the weight of the object to be processed, and the object to be processed is hard to move due to the weight.

In addition, the object to be treated is conveyed in the treatment chamber in one direction of the axial direction of the rotary shaft while being fed and stirred by the stirring section, in conjunction with the cutting and crushing of the object to be treated by the cutting section or the crushing section. Further, the fat percentage of the pig as the object to be treated is high, and slipping easily occurs in the treatment chamber due to the oil, but the object to be treated is cut, crushed and thinned, and is not easily agglomerated at the time of stirring, and thus stirring can be performed efficiently.

The conveyed object to be treated is pressed by the object to be treated which is subsequently conveyed, the pressure is increased at one end wall of the treatment chamber, and the object to be treated is finely ground by kneading at a high temperature and a high pressure for a predetermined time by the feed stirring section located near one end portion. In this case, the object tends to return in the direction of pressure release, i.e., in the direction opposite to the feeding direction, but most of the object is stopped by the rotationally moving check plates, so that the high pressure of the object is maintained.

After the treatment is performed for a predetermined time at such a high temperature and high pressure, the rotation of the stirring body is controlled and switched to the reverse direction. As a result, the object to be processed is transported in the opposite direction in the processing chamber, and is processed at the other end wall in the processing chamber at a high temperature and a high pressure for a predetermined time period in the same manner as described above. In the above-described processing, the side of the processing chamber where the object to be processed is not located is heated to a higher temperature in a so-called idle burning state, and when the object to be processed moves, the object to be processed can be efficiently processed at a sufficiently high temperature immediately.

By repeating the above-mentioned treatment, the moisture content in the object to be treated gradually decreases, and the object to be treated is further pulverized into fine pieces as the drying progresses. Although the reason is not clear, when the treatment time exceeds a certain time, the remaining bone fragments are crushed at once. In this case, since the treatment is performed at high temperature and high pressure from the initial stage of the operation, the treatment for pulverization can be performed in a relatively short time. For the same reason, the produced powder is in the form of fine and soft powder, and is sufficiently sterilized by high temperature and high pressure in the treatment, and therefore, is suitable for use as feed or fertilizer.

The process gas containing the odor component and the moisture generated by the process in the process chamber is sent to the primary combustion furnace and burned to be deodorized. The heating air generated in the primary combustion furnace is sent to the heating chamber to heat the processing chamber, and is discharged to the outside through the secondary combustion furnace. Further, after the object to be treated is pulverized, the pulverized material is stirred by a stirrer, cooled by ventilation of a fan, and the treatment gas in the treatment chamber is sent from the primary combustion furnace to the secondary combustion furnace through the heating chamber and burned, thereby performing deodorization. This can more reliably reduce the environmental load around the device.

(2) In the drying apparatus of the present invention, the pressure control unit includes a pressure release valve.

In this case, the upper limit pressure is set by the pressure release valve, and when the pressure exceeds the upper limit pressure, the excess pressure can be released, so that the pressure in the processing chamber can be maintained at the pressure adjusted in advance. In this way, the pressure in the processing chamber is maintained at the required pressure, the temperature in the processing chamber is raised to the required temperature, and in this high-temperature and high-pressure state, the pressure release valve is opened, and the normal operation in which the pressure in the processing chamber is supplied to the primary combustion furnace as it is changed without limiting the flow rate of the processing gas supplied to the primary combustion furnace.

(3) In the drying apparatus of the present invention, the non-return portion is formed with a pressure release hole penetrating the front surface and the back surface.

In this case, the object to be processed is conveyed to the one end wall side of the processing chamber to be high pressure in the non-return portion, and the object to be processed simultaneously passes through the pressure release hole and is pressure-released, so that the pressure on the one end wall side of the processing chamber does not become high pressure to a certain degree or more, and the load applied to the apparatus can be controlled, thereby achieving safety.

(4) In the drying apparatus of the present invention, the cutting section or the crushing section is a blade formed on an outer peripheral portion of the non-return section.

In this case, since the non-return portion that rotates in the treatment chamber has the blade, it is not necessary to provide the blade when the same cutting capability or crushing capability is used as a reference, and therefore, the stirring body can be manufactured compactly and lightweight. Further, the pressure of the object to be processed becomes high, and the portion of the object to be processed, where the block is difficult to move, can be cut or crushed by the pressure, so that the cutting operation or the crushing operation can be performed more reliably.

(5) In the drying apparatus of the present invention, the blade is formed with a cut portion that cuts the blade at a desired interval in the blade direction.

In this case, the cut portion is formed, whereby the object to be treated can be cut or pulverized more finely by the blade portion having a strong hook.

(6) In the drying apparatus of the present invention, the cutting section or the pulverizing section is a spur-gear-shaped pulverized body rotatably supported so as to be at least floating in a direction of a diameter line of the processing chamber.

In this case, unlike the case where the object to be treated is cut or pulverized by the blade body, for example, the object to be treated can be pulverized more finely because of the pulverizing action by the plurality of teeth, the pulverizing action, and the like. Further, since the crushed body can be retracted in a direction in which a load is not easily applied when the crushed body bites into a relatively large piece of the object to be processed between the crushed body and the inner wall of the processing chamber, it is possible to prevent the crushed body from being damaged by applying a large load to the inner wall of the processing chamber, the rotary shaft, or the like.

(7) In the drying apparatus of the present invention, the feeding stirring section may be integrated with the non-return section, or the feeding stirring section may be integrated with the cutting section or the pulverizing section.

In this case, the feeding stirring section and the non-return section, or the feeding stirring section and the cutting section or the pulverizing section can be integrated (integrated) with each other, and therefore, the stirring body can be manufactured compactly and lightweight with reference to the same stirring capability, non-return capability of the object to be processed, cutting capability, or pulverizing capability.

(8) In order to achieve the above object, a drying method of the present invention includes the steps of: a step of supplying heated air from the primary combustion furnace to the heating chamber to heat the inside of the processing chamber in which the object to be processed is placed; maintaining the pressure in the processing chamber at a desired pressure and increasing the temperature in the processing chamber; a step of feeding a process gas containing an odor component and moisture discharged from the process chamber to a primary combustion furnace, deodorizing the process gas by combustion, and discharging the deodorized process gas to the outside; stopping maintaining the pressure in the processing chamber at the required pressure and temperature, and performing a drying process of stirring and pulverizing the object to be processed for a required time by turning to an operation of releasing the pressure in the processing chamber and performing the drying process for stirring and pulverizing the object to be processed for the required time; and stirring and cooling the pulverized object to be treated, and feeding the treatment gas in the treatment chamber to a secondary combustion furnace, deodorizing by combustion, and discharging the gas to the outside.

According to this drying method, first, immediately after the start of operation, the pressure in the processing chamber is maintained at a desired pressure by, for example, limiting the flow rate of the processing gas supplied to the primary combustion furnace by the processing gas supply unit, and the temperature in the processing chamber is increased to a desired temperature. In this high-temperature and high-pressure state, the restriction of the flow rate of the process gas to be supplied to the primary combustion furnace is stopped, and the operation is changed to a normal operation in which the pressure in the process chamber is released to the primary combustion furnace as it is.

On the other hand, the object to be processed, which is introduced into the processing chamber, is stirred and sequentially thinned by the rotation of the stirring body in the high-temperature and high-pressure processing chamber, and is pulverized by the processing for a required time. In this case, since the treatment is performed at high temperature and high pressure from the initial stage of the operation, the treatment for pulverization can be performed in a relatively short time. For the same reason, the produced powder is in the form of fine and soft powder, and is sufficiently sterilized by high temperature and high pressure in the treatment, and therefore, is suitable for use as feed or fertilizer.

The process gas containing the odor component and the moisture generated by the process in the process chamber is sent to the primary combustion furnace and burned to be deodorized. The heating air generated in the primary combustion furnace is sent to the heating chamber to heat the processing chamber, and is discharged to the outside through, for example, an unburned secondary combustion furnace. Further, after the object to be treated is pulverized, the pulverized material is stirred by a stirrer, cooled by ventilation of a fan, and the treatment gas in the treatment chamber is sent from the primary combustion furnace to the secondary combustion furnace through the heating chamber and burned, thereby performing deodorization. This can more reliably reduce the environmental load around the device.

ADVANTAGEOUS EFFECTS OF INVENTION

The invention provides a drying treatment device and a drying treatment method, wherein the drying treatment device can treat, sterilize and pulverize pigs killed by infectious diseases in the process of raising under high temperature and high pressure, the drying treatment device can reduce the environmental load near the device by preventing odor from being mixed in exhaust gas discharged to the outside, and can dry the pigs with thick and strong bones in a fine and soft powder form, and the produced treated substances can be used as feeds or fertilizers.

Drawings

Fig. 1 is a front view illustrating a drying apparatus according to an embodiment of the present invention, in which a secondary combustion furnace and its accompanying piping are omitted.

Fig. 2 is a side explanatory view of the drying processing apparatus shown in fig. 1.

Fig. 3 is a schematic sectional view taken along line I-I in fig. 1.

Fig. 4 is an explanatory diagram showing piping of the entire drying apparatus shown in fig. 1.

FIG. 5 is a front explanatory view showing the structure of the stirring body.

Fig. 6 is a perspective view showing the structure of a cutting blade constituting the stirring body.

Fig. 7 shows a structure of the cutting blade, fig. 7(a) is a front cross-sectional explanatory view showing the housing in the processing chamber, and fig. 7(b) is a side cross-sectional explanatory view.

Fig. 8 is a perspective view showing the structure of a stirring blade constituting the stirring body.

Fig. 9 shows a configuration of the stirring blade, fig. 9(a) is a front cross-sectional explanatory view showing accommodation in the processing chamber, and fig. 9(b) is a side cross-sectional explanatory view.

Fig. 10 is a perspective view showing the structure of the pulverizing blade constituting the stirring body.

Fig. 11 shows a configuration of the stirring blade, fig. 11(a) is a front cross-sectional explanatory view showing accommodation in the processing chamber, and fig. 11(b) is a side cross-sectional explanatory view.

Detailed Description

The present invention will be described in detail below based on the illustrated embodiments.

Refer to fig. 1 to 11. In fig. 1, the secondary combustion furnace located on the back side and the piping passing through the secondary combustion furnace are not shown for the sake of simplicity and convenience of illustration, but are shown in fig. 2 and 4.

The drying apparatus a is an apparatus for drying and pulverizing a material to be treated, such as a pig slaughtered for an infectious disease, at a high temperature and a high pressure in a treatment chamber. The drying apparatus a can perform drying treatment not only on such pigs, dead chickens, and other livestock, but also on feces, excess sludge, and the like of animal manure and distilled liquor.

The drying device A includes: a housing 1; a heating chamber 2 provided inside the casing 1; a processing chamber 3 provided inside the heating chamber 2; a stirrer 4 provided inside the processing chamber 3; a drive device 5 for rotationally driving the stirring body 4; a primary combustion furnace 6 for supplying heated air to the heating chamber 2; a process gas feed pipe 7 for feeding a gas containing an odor component and moisture generated in the process chamber 3 to the primary combustion furnace 6; a pressurization control unit 8 that can continuously operate in a high-temperature and high-pressure state by increasing the pressure and temperature inside the processing chamber 3 at the initial stage of operation; and a secondary combustion furnace 9 for performing deodorization treatment by burning odor contained in the gas passing through the heating chamber 2 before the odor is released to the atmosphere.

The above-described parts will be described below, and since the basic configurations of the parts other than the stirring body 4, the pressurization control unit 8, and the post-combustion furnace 9 are well known, these parts are only appropriately and simply described in order not to complicate the description. In the following description, the term "front" used in describing the direction and position refers to a portion on the right side in fig. 1, and the term "rear" refers to a portion on the left side.

(casing 1 and heating chamber 2)

The housing 1 has a substantially cylindrical shape with both front and rear ends closed, and is supported horizontally by a leg frame 10 with the central axis in the front-rear direction. Inside the casing 1, a heating chamber 2 having a cylindrical shape as in the casing 1, a diameter slightly smaller than the casing 1, and substantially the same length is fixed to the casing 1 so as to share the center axis. The processing chamber 3 is fixed inside the heating chamber 2.

(treatment Chamber 3)

The processing chamber 3 includes a cylindrical barrel 30 and

circular end walls

31 and 32 provided at both ends in the longitudinal direction thereof. The processing chamber 3 is fixed inside the heating chamber 2, which is slightly larger than the processing chamber 3 and has the same shape, with the central axis as the horizontal direction, and with parts of both end portions in the longitudinal direction protruding outward from the heating chamber 2 and the front and rear end portions of the casing 1. Between the inner surfaces of the treatment chamber 3 and the heating chamber 2, a gap 20 constituting an interlayer portion is provided, and the gap 20 is filled with the heating air supplied from the primary combustion furnace 6.

(Secondary combustion furnace 9)

An exhaust duct 21 for discharging the heated air passing through the gap 20 to the outside of the apparatus is provided in an upper portion of the heating chamber 2 near the front. The upper end of the exhaust cylinder 21 is sealed by a lid (reference numeral omitted). One end of the exhaust pipe 90 penetrates the side wall and is connected to the exhaust pipe 21, and the other end of the exhaust pipe 90 penetrates the peripheral wall and is connected to the vicinity of one end of the after-combustion furnace 9 (close to a burner 92 described later).

The secondary combustion furnace 9 is formed in a cylindrical hollow shape using refractory bricks in the peripheral wall portion, and a burner 92 is attached to the front end wall 91. Further, near the other end of the secondary combustion furnace 9, one end of the exhaust pipe 93 is connected so as to penetrate the peripheral wall, and the other end of the exhaust pipe 93 is connected to the introduction side of the air introduction member 94. The air inlet 94 has a discharge side connected to one end of an exhaust duct 95, and the other end of the exhaust duct 95 is connected to a suction fan 96. The exhaust side of the suction fan 96 is connected to an exhaust pipe 97, and the tip of the exhaust pipe 97 is connected to a filter 97.

The lower portion of the rear side of the heating chamber 2 is connected to the upper end of a hot air passage 22 using refractory bricks in the peripheral wall portion, and the lower end of the hot air passage 22 is connected to a primary combustion furnace 6 described later.

In the treatment chamber 3, a heat protection plate 38 is stretched over the outer surface of the rear side of the cylindrical body 30 above the upper opening of the hot air path 22, and the heat protection plate 38 reduces deterioration of the cylindrical body 30 due to excessive heating by the heated air.

A lid device 34 capable of sealing the inside of the processing chamber 3 is provided on the rear end wall 31 of the processing chamber 3. The cover device 34 is configured such that a cover 341 is fixed to the tip end of the arm 340 pivotally attached in the vertical direction, and the cover 341 opens and closes a discharge portion (not shown) provided in the end wall 31, and the cover 341 can be opened and closed by rotating the handle 35. Further, reference numeral 36 denotes a chute as a guide portion when the processed object is discharged.

A rectangular tubular input portion 11 is provided at the upper portion of the rear portion side of the casing 1, and the input portion 11 penetrates the upper wall of the heating chamber 2 and the upper portion of the cylindrical portion 30 of the processing chamber 3 and communicates with the inside of the processing chamber 3.

A lid device 12 capable of sealing the inside of the processing chamber 3 is provided above the input portion 11. The lid device 12 includes a lid plate 120 whose upper portion side is rotatably supported, and the lid plate 120 can be moved to open and close the input portion 11 by the vertical operation of a handle lever 121 attached to the lid plate 120.

One end of the process gas feed pipe 7 penetrates the heating chamber 2 and is connected to the processing chamber 3. The other end of the process gas feed pipe 7 is connected to the suction side of the suction fan 70. The exhaust side of the suction fan 70 is connected to one end of the process gas supply pipe 7a, and the other end thereof is connected to the primary combustion furnace 6. Thus, the process gas containing the odor component and the moisture generated in the process chamber 3 is sent to the primary combustion furnace 6, and almost all of the odor component is burned and deodorized.

Valves

701 and 702 are provided in the path of the process gas supply pipe 7 at two positions on the upstream side and the downstream side of the suction fan 70. In the present embodiment, the

valves

701 and 702 are manual valves that are opened and closed by the manual operation of the operator, but are not limited to this, and may be electric automatic valves that are opened and closed by automatic control.

(pressure control section 8)

A pressurization control unit 8 is provided in the path of the process gas supply pipe 7, and the pressurization control unit 8 can continuously operate in a high-temperature and high-pressure state by increasing the pressure and temperature inside the process chamber 3 at the initial stage of operation. The pressurization control unit 8 is constituted by a pressure release valve 80 and a bypass pipe 81, and the pressure release valve 80 is connected to the upstream side of the upstream side valve 701 in the path of the process gas supply pipe 7 so as to penetrate the peripheral wall.

Further, a pressure relief portion (discharge portion: reference numeral omitted) of the pressure relief valve 80 is connected to one end of the bypass pipe 81. The other end of the bypass pipe 81 penetrates the peripheral wall at a position downstream of the valve 702 on the downstream side of the suction fan 70 in the path of the process gas supply pipe 7 a.

(Primary combustion furnace 6)

The primary combustion furnace 6 is provided below the heating chamber 2, and is connected to the heating chamber 2 through the hot air passage 22 as described above. The primary combustion furnace 6 is formed in a cylindrical hollow shape using refractory bricks in a peripheral wall portion, and a burner 61 is attached to an end wall 60 on a front side. The heated air heated by the burner 61 is supplied into the heating chamber 2 through the hot air path 22 while burning the process gas supplied from the process gas supply pipe 7, heats the process chamber 3, and is then discharged into the atmosphere from the exhaust stack 21 through the secondary combustion furnace 9.

(stirring body 4)

The agitator 4 is rotatably supported by a pivot shaft inside the processing chamber 3. The stirring body 4 has a rotating shaft 40 in a circular tube shape. The rotary shaft 40 may be configured to feed cooling water and heating water or heating steam into the pipe, or may be solid instead of the pipe. The rotary shaft 40 is pivotally supported outside the

end walls

31 and 32 of the processing chamber 3 by bearings 49 fixed to the bracket 33 and the motor mount 37.

The center of the axis of the rotating shaft 40 is common to the center axis of the cylindrical barrel 30 of the processing chamber 3. The rotary shaft 40 penetrates the

end walls

31 and 32 of the processing chamber 3 to be rotatable and maintain airtightness in the processing chamber 3.

The stirring body 4 is driven by a drive means 5. The driving device 5 includes a motor 50 fixed to an upper portion of the motor frame 37, and a power transmission system 51 including a sprocket and a chain and transmitting power of the motor 50 to the rotary shaft 40. The driving device 5 is controlled by a control unit (not shown and denoted) to switch the rotation direction of the stirring body 4 between the forward direction and the reverse direction at predetermined time intervals.

Four cutting blades 41 and two stirring blades 42 as stirring bodies and three crushing blades 43 as stirring bodies are attached to a portion of the rotating shaft 40 located inside the processing chamber 3 in an appropriate arrangement along the axial direction of the rotating shaft 40. The number of the cutting blades 41, the stirring blades 42, and the pulverizing blades 43 is not limited thereto, and can be appropriately set according to the capacity and scale of the apparatus.

(cutting blade 41)

The structure of the cutting paddle 41 will be described below mainly with reference to fig. 6 and 7.

The cutting paddle 41 has a tubular rod 410, and the tubular rod 410 is fixed to extend in the diametrical line direction of the rotary shaft 40 through the peripheral wall portion of the rotary shaft 40. A blade plate 411 is fixed to the front end of the rod body 410. The vane plate 411 is fixed to be inclined at a predetermined angle in the axial direction with respect to the axial direction of the rotary shaft 40, and its tip edge portion is formed in a gentle arc shape along the shape with a slight gap from the inner peripheral surface of the cylindrical portion 30 of the processing chamber 3. The rod body 410 and the blade plate 411 constitute a feeding stirring portion.

The blade plates 411 are inclined in the same direction so that all the objects to be treated can be conveyed in the same direction (the same applies to the blade plates 421 of the stirring blades 42 and the blade plates 432 of the crushing blades 43 described later). In the present embodiment, the inclination angle of each vane plate 411 is set to 30 ° in the axial direction with respect to the axial direction of the rotary shaft 40, but the inclination angle is not limited to this, and may be set to an appropriate angle.

A check plate 45 is integrally fixed to the rod body 410 and the rotary shaft 40. As shown in fig. 6 and 7, the check plate 45 is a plate body having an outer edge shape having a tear-drop shape (a shape in which a pointed portion of the tear-drop shape is removed) or a pear-shaped shape, and includes a base portion (reference numeral omitted) having a slightly narrow width and a front portion (reference numeral omitted) having a wide width formed in an arc shape. The base side of the check plate 45 is fixed to the rod body 410, and the rotating shaft 40 is fixed to the rotating shaft 40 so as to penetrate through a substantially middle portion between the base side and the front side.

The front side of the check plate 45 extends to the opposite side of the rod body 410, and a blade 450 having two blades is formed on the outer edge of the circular arc over the entire length of the circular arc. The blade part 450 is formed with cut parts 451 at a plurality of positions (three positions in the present embodiment) excluding both side portions on the tip end side, and the cut parts 451 cut in a substantially V-shape to cut the blade part 450. Further, a circular pressure release hole 452 having an inner diameter substantially equal to the outer diameter of the rotary shaft 40 is formed through the front and rear surfaces of the front center portion of the check plate 45.

More specifically, in the present embodiment, the maximum width (diameter) of the arc portion of the blade portion 450 is a length of about 1/2 of the inner diameter of the cylindrical body portion 30 of the treatment chamber 3 with respect to the shape of the check plate 45. The length is not limited to this, and may be, for example, "50% ± 10% of the inner diameter of the cylindrical body 30: the length of the film is adjusted within the range of 40-60%. The distance from the position of the rotary shaft 40 to the side edges on both sides is approximately 1/2 or 1/2 or less of the distance between the center of the rotary shaft 40 and the inner surface of the body 30. If these values exceed 1/2, the space for biting into the lump, specifically, the space 39 for biting into the head of the pig, which will be described later, becomes narrow, and the head of the pig cannot be handled or is difficult to handle.

The check plate 45 is formed such that both side edges thereof are expanded (gradually expanded) toward the inner surface of the barrel 30 by the rotation shaft 40, the front portion thereof is formed in a semicircular arc shape or a substantially semicircular arc shape from a position approximately 1/2 of the distance between the rotation shaft 40 and the inner surface of the barrel 30, and the edge portion thereof forms a space portion for biting into the block, specifically, a space portion 39 capable of biting into the head of the pig between the outer peripheral edge of the substantially semicircular arc-shaped blade portion 450 and the inner surface of the barrel 30. The cut portion 451 provided in the blade portion 450 is used to catch the processed lump, and facilitates biting.

The vane plate 411 fixed to the rod 410 is rotated and moved in a state where a slight gap is provided between the tip end edge portion thereof and the inner surface of the cylindrical portion 30 of the processing chamber 3. The check plate 45 is rotated and moved in a state where a slight gap is provided between the tip end portion thereof and the inner surface of the cylindrical portion 30 of the processing chamber 3 (see fig. 6 (b)). Each cutting paddle 41 is provided such that the respective rod bodies 410 are alternately oriented in opposite directions (directions of 180 °) in the axial circumferential direction of the rotary shaft 40.

(stirring blade 42)

The structure of the stirring blade 42 will be described mainly with reference to fig. 8 and 9.

The stirring blade 42 has a tubular rod 420, and the tubular rod 420 penetrates the outer periphery of the rotating shaft 40 and is fixed to extend in the diametrical line direction of the rotating shaft 40. A vane plate 421 is fixed to the front end of the lever body 420. The vane plate 421 is fixed to be inclined at a predetermined angle in the axial direction of the rotary shaft 40, and has a tip edge portion thereof slightly spaced from the inner peripheral surface of the cylindrical portion 30 of the processing chamber 3, and is formed in a gentle arc shape along the shape thereof. The rod body 420 and the blade plate 421 constitute a feeding stirring portion.

The blade plates 421 are inclined in the same direction so that all the objects to be processed can be conveyed in the same direction. In the present embodiment, the inclination angle of each blade plate 421 is set to 30 ° in the axial direction of the rotating shaft 40, similarly to the blade plate 411 of the cutting paddle 41, but is not limited to this, and may be set to an appropriate angle as appropriate.

A check plate 48 is integrally fixed to the rod body 420 and the rotary shaft 40. As shown in fig. 7 and 8, the check plate 48 is a plate body having an outer edge shape with a tear-drop shape, and is configured by a base side (reference numeral omitted) formed in an arc shape with a wide width and a front side (reference numeral omitted) slightly narrowed in width. The check plate 48 is fixed to the rotary shaft 40 so that the rotary shaft 40 penetrates through the center portion of the base side, and the front side is fixed to the rod body 420. The check plate 48 is formed to have a slightly smaller outer shape than the check plate 45 of the cutting paddle 41, and is not provided with a pressure release hole.

The vane plate 421 fixed to the tip of the rod body 420 is rotated and moved in a state where the tip thereof is slightly spaced from the inner surface of the cylindrical body 30 of the processing chamber 3 (see fig. 8 (b)). The stirring blades 42 are provided so that the rod bodies 420 thereof face the same direction in the axial circumferential direction of the rotary shaft 40, and so that the direction thereof is perpendicular to (at 90 ° to) the rod bodies 410 of the cutting blades 41.

(crushing paddle 43)

The structure of the crushing blade 43 will be described mainly with reference to fig. 10 and 11.

The crushing paddle 43 has

tubular rods

430 and 431, and the

tubular rods

430 and 431 are fixed to extend in the diametrical line direction of the rotary shaft 40 so as to penetrate through the peripheral wall portion of the rotary shaft 40. A vane plate 432 similar to the

vane plates

411 and 421 is fixed to the tip end of one lever body 430.

Further, a circular tube-shaped bearing 433 having a predetermined diameter is fixed to the front portion of the other rod body 431 so that the axial direction is parallel to the rotary shaft 40. A central shaft 434 is passed through the bearing 433, and the central shaft 434 has a diameter slightly smaller than the inner diameter of the bearing 433, has a rod shape, and has a predetermined length. The central shaft 434 is formed longer than the bearing 433, and spur-gear-shaped pulverizing bodies 435 having the same diameter are fixedly connected to both ends thereof. Further, a slight gap is provided between the inner surface of each crushing body 435 and the opposite surfaces of the bearing 433.

According to this configuration, a member (reference numeral omitted) in which the center shaft 434 and the two crushed bodies 435 are integrated can slightly move forward and backward in the axial direction of the center shaft 434, and the axis of the center shaft 434 can be inclined at a predetermined angle with respect to the axis of the bearing 433, that is, the member is fitted in the bearing 433 so as to be able to float.

Further, the outer peripheral portions (tooth front portions) of the crushed bodies 435 are almost in contact with the inner surface of the cylindrical body portion 30 of the treatment chamber 3 in the closest state (the state where the center shaft 434 is in close contact with the front end surface of the inner peripheral surface of the bearing 433: see fig. 11 (b)). Further, since the central shaft 434 and the two pulverizing bodies 435 form an integral member that freely moves within a certain range, the pulverizing bodies 435 can be appropriately retracted in a direction in which a load is not easily applied when the relatively large lump of the object to be processed is caught between each pulverizing body 435 and the inner wall of the processing chamber 3.

By repeating such operations, the crushing blade 43 can finely crush the object to be treated by the crushing body 435.

Further, the

lever bodies

430 and 431 and the rotary shaft 40 are integrally fixed to a check plate 436 also serving as a reinforcing portion. As shown in fig. 10 and 11(b), the outer edge of the check plate 436 has a spindle shape.

(action)

The operation of the drying apparatus a according to the present invention will be described with reference to the case where the object to be treated is a slaughtered pig. At the start of the treatment operation, the burner 61 of the primary combustion furnace 6 is ignited, and the operation of the

fans

70 and 96 is started. Further, the

valves

701 and 702 are closed in advance. At this time, the fan 70 may be stopped. This forms a ventilation path for discharging the gas from the process chamber 3 to the outside through the pressure release 80, the primary combustion furnace 6, the heating chamber 2, the secondary combustion furnace 9, and the suction fan 96 in this order. The upper limit pressure of the pressure release valve 80 of the pressurization control unit 8 is set in advance as appropriate.

Thereby, the heating air is sent from the primary combustion furnace 6 to the heating chamber 2, and the processing chamber 3 is heated. In the processing chamber 3, the stirrer 4 is rotated by the driving device 5. In addition, the burner 92 of the after-combustion furnace 9 has not yet been ignited. Then, the cover plate 120 of the cover device 12 on the upper portion of the casing 1 is opened, and the whole pig as the object to be processed or the pig divided into blocks is put into the processing chamber 3 by a predetermined amount from the input portion 11. The cover 120 is then closed.

The charged object to be treated is stirred by the cutting blades 41, the stirring blades 42 and the crushing blades 43 provided on the rotating shaft 40 of the stirrer 4, and at the first time, bones are sequentially cut mainly by the blade portions 450 of the check plates 45 of the cutting blades 41. The cutting is mainly performed as follows: in the bottom portion of the treatment chamber 3 where the object to be treated is accumulated by its weight, the blade 450 of the check plate 45 is rotationally moved close to the inner surface of the cylindrical body 30 of the treatment chamber 3, whereby the object to be treated is pinched off by the inner surface of the cylindrical body 30 and the blade 450. Further, since the space 39 is sufficiently wide, for example, a thick bone such as a head portion easily enters, and the cutting or chopping is more reliably performed by the respective cut portions 451 formed in the blade portion 450, and the cut pieces are made into small pieces together with meat, thereby making the size of the meat thinner.

Further, the object to be processed is conveyed in one direction of the axial direction of the rotary shaft 40 in the processing chamber 3 while being stirred, simultaneously with the cutting and crushing by the

respective paddles

41, 42, 43. In addition, the fat percentage of the pig as the object to be treated is high, the content of the treatment chamber 3 is easily slippery due to the oil, the object to be treated and the bones are cut, crushed and thinned, and the pig is not easily agglomerated during the stirring, so that the pig can be efficiently stirred.

The conveyed object to be treated is pressed by the subsequently conveyed object to be treated, the pressure is increased at one end wall 31 (or 32) of the treatment chamber 3, and the object to be treated is kneaded at a high temperature and a high pressure for a predetermined time by the stirring blade 42 located near one end portion, whereby the object to be treated is finely ground. At this time, the object tends to return in the direction of pressure release, i.e., in the direction opposite to the feeding direction, but most of the object is stopped by the rotationally moved

check plates

436, 45, and 48, and thus the high pressure of the object is maintained. A part of the object to be processed, the pressure of which becomes high, can be returned through the pressure release hole 452 at the check plate 45 of the cutoff paddle 41, preventing the pressure of the object to be processed from being excessively raised.

After the treatment at high temperature and high pressure for a predetermined time, the rotation of the stirring body 4 is controlled to be switched to the reverse direction. Thus, the object to be processed is transported in the opposite direction in the processing chamber 3, and is processed at the other end wall 32 (or 31) in the processing chamber 3 at a high temperature and a high pressure for a predetermined time in the same manner as described above. In the above-described processing, the side of the processing chamber 3 where the object to be processed is not located has a higher temperature in a so-called idle-burning state, and when the direction of conveyance is switched and the object to be processed is moved, efficient processing can be immediately performed at a sufficiently high temperature.

The part of the processing gas containing the odor component and the moisture (water vapor) generated by the drying process, which exceeds the set pressure of the pressure release valve 80, is also sent to the primary combustion furnace 6 by the suction fan 96, and is deodorized by combustion. Then, the odorless gas passes through the secondary combustion furnace 9 and the filter 98, and is discharged to the outside. Further, the pressure in the processing chamber 3 can be maintained substantially at the pressure set by the pressure release valve 80. This can maintain the temperature and pressure in the processing chamber 3 in a state where the drying process can be performed efficiently.

In this high-temperature and high-pressure state, after the drying process is performed for a predetermined time, the

valves

701 and 702 are opened to start ventilation by the fan 70, and the burner 61 of the primary combustion furnace 6 is stopped. Thus, the pressure in the processing chamber 3 is maintained, and the normal operation for supplying the processing gas to the primary combustion furnace 6 is performed. Then, the drying process is performed using the heat of combustion of the object to be processed in the processing chamber 3 as a heat source, and the moisture contained in the object to be processed gradually decreases, and the object to be processed is further pulverized into fine pieces. Further, no fuel is required from the stop of the burner 61 to the pulverization.

The process gas containing the odor component and the moisture generated by the drying process in the process chamber 3 is sent to the primary combustion furnace 6 heated by the combustion in the process chamber 3, and is burned and deodorized. The deodorized heated air is sent to the heating chamber 2 to heat the treatment chamber 3, and is discharged from the secondary combustion furnace 9 to the outside through the filter 98.

After the material to be treated is pulverized, the burner 92 of the secondary combustion furnace 9 is ignited, the pulverized material is stirred by the stirrer 4, cooled by ventilation of the

fans

70 and 96, and the treatment gas in the treatment chamber 3 is sent from the primary combustion furnace 6 to the secondary combustion furnace 9 through the heating chamber 2 and burned, thereby performing deodorization. This reduces the environmental load around the device.

In addition, in the above operation, since the treatment is performed at high temperature and high pressure from the initial stage of the operation, the treatment for pulverization can be performed in a relatively short time. For the same reason, the produced powder is in the form of fine and soft powder, and is sufficiently sterilized by high temperature and high pressure in the treatment, and therefore, is suitable for use as feed or fertilizer.

Further, since the secondary combustion furnace 9 can suck the process gas in the process chamber 3 by the operation of the suction fan 96, the flow of air can reach the inside of the process chamber 3, and the secondary combustion furnace also contributes to cooling of the object to be processed in the process chamber 3. Further, by providing the air introduction member 94 on the upstream side of the suction fan 96, even when the suction force of the suction fan 96 is too strong, the air introduction member 94 functions as a safety device, and by sucking air from the air introduction member 94, the load applied to the processing chamber 3 and the like can be reduced by reducing the pressure.

The terms and expressions which have been employed in the specification are used as terms of description and not of limitation, and there is no intention in the use of such terms and expressions of excluding equivalents of the features shown and described in the specification and portions thereof. It is needless to say that various modifications are possible within the scope of the technical idea of the present invention.

Description of reference numerals

A drying treatment device

1 casing

10 feet frame

11 input part

12 cover device

120 cover plate

121 handle bar

2 heating chamber

20 gap part

21 exhaust pipe

22 hot air path

3 treatment chamber

30 barrel part

31. 32 end wall

33 bracket

34 cover device

340 arm

341 cover plate

35 handle

36 chute

37 motor rack

38 heat shield plate

39 space part

4 stirring body

40 rotating shaft

41 cutting blade

410 rod body

411 vane plate

42 stirring blade

420 rod body

421 blade board

48 check plate

43 crushing paddle

430. 431 rod body

432 blade plate

433 bearing

434 central axis

435 pulverized body

436 check plate

45 check plate

450 blade part

451 incised part

452 pressure relief vent

49 bearing

5 drive device

50 motor

51 power transmission system

6 once combustion furnace

60 end wall

61 burner

7 process gas supply pipe

7a process gas supply pipe

70 suction fan

701. 702 valve

8 pressure control part

80 pressure relief valve

81 by-pass pipe

9 Secondary combustion furnace

90 exhaust pipe

91 end wall

92 burner

93 exhaust pipe

94 air intake

95 exhaust pipe

96 suction fan

97 exhaust pipe

98 filter.

Claims

1. A drying apparatus is characterized by comprising:

a heating chamber;

a process chamber provided inside the heating chamber and having end walls on both sides of the process chamber;

a stirring body provided inside the treatment chamber and including a rotating shaft, a feeding stirring portion provided in a required number on the rotating shaft, a front end portion of the feeding stirring portion rotating along an inner surface of the treatment chamber as the feeding stirring portion rotates to stir the object to be treated and to feed the object to be treated in the treatment chamber in an axial direction of the rotating shaft, a plate-shaped non-return portion provided in a required number on the rotating shaft, a crushing portion provided in a required number on the rotating shaft, the non-return portion rotating along the rotation with a slight gap between the front end portion of the non-return portion and the inner surface of the treatment chamber, the non-return portion making it difficult for the object to be treated to return in a reverse direction when the pressure of the object to be treated is increased as the object to be treated is fed to an end wall side of one or the other of the treatment chambers by the feeding stirring portion, rotating the crushing section while providing a slight gap between the front end of the crushing section and the inner surface of the treatment chamber;

a drive device that rotationally drives the stirring body;

a primary combustion furnace that supplies heating air to the heating chamber;

a process gas supply unit configured to supply a process gas containing an odor component and moisture generated in the process chamber to the primary combustion furnace;

a pressurization control unit provided in the process gas supply unit, for controlling a flow rate of a process gas to adjust a pressure in the process chamber to a desired pressure; and

a post-combustion furnace for performing a deodorization process by a process gas in the process chamber,

the pulverization portion is a spur gear-shaped pulverization body which is rotatably supported and is capable of floating at least in the direction of the diameter line of the treatment chamber,

the crushing bodies are fixed at both ends of a central shaft which is inserted into a tubular bearing having a predetermined diameter and is longer than the bearing, the bearing is provided at the front end of a rod body fixed to the rotary shaft,

a slight gap is provided between the inner surface of each of the crushed bodies and both end surfaces of the bearing, and the center shaft is capable of being inclined at a predetermined angle with respect to the axis of the bearing and is fitted in the bearing in a floating manner.

2. The drying processing apparatus according to claim 1,

the pressurization control unit includes a pressure release valve.

3. The drying processing apparatus according to claim 1 or 2,

the check part is formed with a pressure release hole penetrating the front and back surfaces.

4. The drying processing apparatus according to claim 1,

the feeding stirring portion is formed integrally with the non-return portion, or the feeding stirring portion is formed integrally with the pulverizing portion.

5. A drying method is characterized by comprising the following steps:

a step of supplying heated air from the primary combustion furnace to the heating chamber to heat the inside of the processing chamber in which the object to be processed is placed;

maintaining the pressure in the processing chamber at a desired pressure and increasing the temperature in the processing chamber;

a step of feeding a process gas containing an odor component and moisture discharged from the process chamber to a primary combustion furnace, deodorizing the process gas by combustion, and discharging the deodorized process gas to the outside;

stopping maintaining the pressure in the processing chamber at the required pressure and temperature, and performing a drying process of stirring and pulverizing the object to be processed for a required time by turning to an operation of releasing the pressure in the processing chamber and performing the drying process for stirring and pulverizing the object to be processed for the required time; and

and a step of stirring and cooling the pulverized object to be treated, and sending the treatment gas in the treatment chamber to a secondary combustion furnace, deodorizing by combustion, and discharging the gas to the outside.