CN116289282A - Continuous steam explosion machine - Google Patents

Abstract

The invention provides a continuous steam explosion machine, which comprises a low-temperature low-pressure chamber, a high-temperature high-pressure chamber, a reciprocating type blanking device and a steam explosion chamber; preheating the materials in the low-temperature low-pressure chamber; the high-temperature high-pressure chamber is communicated with the low-temperature low-pressure chamber, and a plurality of steam inlets are formed in the high-temperature high-pressure chamber and are used for heating, pressurizing, preserving heat and maintaining pressure of the pretreated material; a first intermediate cavity is arranged in the reciprocating type blanking device and is communicated with the high-temperature high-pressure chamber so that materials in the high-temperature high-pressure chamber enter the first intermediate cavity; the steam explosion chamber is communicated with the first middle cavity; after the materials subjected to the high-temperature and high-pressure indoor treatment enter the first intermediate cavity, the reciprocating type blanking device moves to enable the first intermediate cavity to be communicated with the steam explosion chamber, and the materials in the first intermediate cavity are subjected to instantaneous depressurization after entering the steam explosion chamber to be subjected to steam explosion. Under the condition of not affecting the steam explosion efficiency, the volume of the single steam explosion material in the steam explosion chamber is reduced, and the noise generated during the steam explosion is reduced.

Description

Continuous steam explosion machine

Technical Field

The invention relates to the technical field of papermaking, in particular to a continuous steam explosion machine.

Background

The bamboo plant has the characteristics of high growth speed, short cutting period, high yield and the like. After the bamboo is successfully developed and utilized, the bamboo is widely applied to the fields of papermaking, sugar manufacturing and the like, and a plurality of new technologies and new processes are developed accordingly, and the commercial value of the bamboo is continuously raised.

At present, the methods for obtaining bamboo pulp by taking bamboo as raw materials are a mechanical method, a chemical method and a chemical mechanical method, most of domestic pulping is carried out by using a chemical method process, the pulping by using the mechanical method process accounts for about 70 percent, the pulping by using the chemical mechanical method process accounts for less than 30 percent, and the pulping by using the mechanical method process is limited to a test stage at present and has no report on large industrialization. For mass production, the chemical process and the mechanochemical process bring a lot of adverse factors, the use of chemical agents is self-evident to environmental pollution, and meanwhile, chemical waste is required to be treated, so that the environment is polluted, the economic cost is also lost, the pulping yield of the chemical process is low, generally 45% -55%, the pulping yield of the chemicomechanical process is generally 72% -75%, and the pulping yield of the mechanical process is about 95%, which is far higher than that of the chemical process and the chemicomechanical process.

With the rise of the bamboo steam explosion process, the bamboo steam explosion process is expected to be developed into a main stream process of mechanical environment-friendly pulping in the future. However, the technology and related equipment for producing the fiber by steam explosion of the bamboo and wood in the market at present are less, and the steam explosion noise is large.

Disclosure of Invention

The continuous steam explosion machine is simple in production process and low in steam explosion noise.

In order to solve the technical problems, the application adopts the following technical scheme:

according to one aspect of the present application, there is provided a continuous steam explosion machine comprising: a low-temperature low-pressure chamber, a high-temperature high-pressure chamber, a reciprocating type blanking device and a steam explosion chamber; the low-temperature low-pressure chamber is used for accommodating materials and preheating the materials; the high-temperature and high-pressure chamber is communicated with the low-temperature and low-pressure chamber, the material after the heating pretreatment in the low-temperature and low-pressure chamber enters the high-temperature and high-pressure chamber, and a plurality of steam inlets are formed in the high-temperature and high-pressure chamber and are used for heating, pressurizing, preserving heat and maintaining pressure of the pretreated material; a first intermediate cavity is arranged in the reciprocating type blanking device and is communicated with the high-temperature high-pressure chamber so that the materials in the high-temperature high-pressure chamber enter the first intermediate cavity; the steam explosion chamber is communicated with the first middle cavity; the low-temperature low-pressure chamber, the high-temperature high-pressure chamber, the reciprocating type blanking device and the steam explosion chamber are communicated through valve members, after materials processed in the high-temperature high-pressure chamber enter the first middle chamber, the reciprocating type blanking device moves to enable the first middle chamber to be communicated with the steam explosion chamber, and the materials in the first middle chamber are subjected to instantaneous depressurization after entering the steam explosion chamber to be subjected to steam explosion.

In some embodiments, a first discharge valve and a second discharge valve are arranged on the high-temperature high-pressure chamber, the first discharge valve and the second discharge valve are located on the same side of the high-temperature high-pressure chamber, the first discharge valve and the second discharge valve are arranged at intervals along the length direction of the high-temperature high-pressure chamber, a second middle cavity is further arranged in the reciprocating type discharging device, the first middle cavity can be communicated with the high-temperature high-pressure chamber through the first discharge valve, the second middle cavity can be communicated with the high-temperature high-pressure chamber through the second discharge valve, the second middle cavity can also be communicated with the steam explosion chamber, and the first middle cavity and the second middle cavity are respectively communicated with the steam explosion chamber once in a reciprocating movement process of the reciprocating type discharging device.

In some embodiments, the spacing between the first intermediate chamber and the second intermediate chamber is less than the spacing between the first discharge valve and the second discharge valve.

In some embodiments, the upper end of the steam explosion chamber protrudes upwards to form a connecting cylinder, the upper end of the connecting cylinder can be communicated with the first middle cavity or the second middle cavity, and a silencing device is arranged on the periphery of the connecting cylinder.

In some embodiments, the steam explosion chamber is positioned below the horizon of the work floor to reduce noise when the steam explosion chamber is steam exploded.

In some embodiments, the steam explosion chamber is provided with pressure release meshes, and a heat absorbing component is arranged on the periphery of the steam explosion chamber and used for absorbing heat generated during steam explosion of materials, and comprises a heat pipe which extends and winds the periphery of the low-temperature low-pressure chamber so as to supply heat for the low-temperature low-pressure chamber.

In some embodiments, screw feeders are disposed in both the low temperature and low pressure chamber and the high temperature and high pressure chamber.

In some embodiments, the steam inlets are spaced along the length direction of the high-temperature high-pressure chamber, the steam inlets are located at one side of the high-temperature high-pressure chamber, and the steam inlets and the feed inlet of the high-temperature high-pressure chamber are located at two ends of the high-temperature high-pressure chamber respectively.

In some embodiments, the steam explosion device further comprises a discharging mechanism, a steam explosion discharging hole is formed in the lower end of the steam explosion chamber, a steam explosion discharging valve is arranged on the steam explosion discharging hole, and the discharging mechanism can be communicated with the steam explosion chamber.

In some embodiments, the device further comprises a control device, a steam valve is arranged at the steam inlet, the control device is electrically connected with the steam valve and the valve element, and the control device respectively controls the on-off of the steam valves so as to control the temperature change of different areas in the high-temperature high-pressure chamber.

According to the technical scheme, the application has at least the following advantages and positive effects:

in the application, materials enter a low-temperature low-pressure chamber for pretreatment, and then enter a high-temperature high-pressure chamber from the low-temperature low-pressure chamber for high-temperature high-pressure treatment and heat preservation pressure maintaining treatment. Materials in the high-temperature and high-pressure chamber enter the reciprocating blanking machine, and the reciprocating blanking machine is communicated with the steam explosion chamber, so that the materials in the reciprocating blanking machine are steam exploded. On the one hand, the material can make the water molecule fully permeate under high temperature high pressure environment, prevents that the steam infiltration is insufficient in the material, has improved the material separation rate after the steam explosion, has reduced the bamboo timber steam explosion effect difference. On the other hand, batch and multiple steam explosion of materials can reduce the volume of the single steam explosion materials in the steam explosion chamber and reduce the noise generated during the steam explosion under the condition of not affecting the steam explosion efficiency.

Drawings

FIG. 1 is a schematic structural view of a continuous steam explosion machine according to the present invention.

Fig. 2 is an enlarged view of the structure at a in fig. 1.

The reference numerals are explained as follows:

100. a feeder; 200. a low temperature low pressure chamber; 210. a hopper; 220. a screw conveyor; 300. a high temperature and high pressure chamber; 310. a first discharge valve; 320. a second discharge valve; 330. a screw conveyor; 400. reciprocating type blanking device; 410. a first intermediate chamber; 420. a second intermediate chamber; 500. a steam explosion chamber; 510. a connecting cylinder; 600. a discharging mechanism; 610. a discharge conveyor; 620. and (5) a discharging spiral elevator.

Detailed Description

Exemplary embodiments that embody features and advantages of the present application are described in detail in the following description. It will be understood that the present application is capable of various modifications in various embodiments, all without departing from the scope of the present application, and that the description and illustrations herein are intended to be by way of illustration only and not to be limiting.

In the description of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the related art of the steam explosion process, a steam explosion machine comprises a charging barrel and a heating and pressurizing bin for accommodating the charging barrel. Firstly, materials are filled into a charging barrel, and the charging barrel is filled into a heating and pressurizing bin. Then, the heating and pressurizing bin is closed, and steam is introduced for pressurizing and heating for a period of time. Finally, steam explosion is carried out, the heating and pressurizing bin is opened, and the material barrel is taken out to pour out the steam exploded material. However, when the materials are subjected to steam explosion in the heating and pressurizing bin, the production efficiency is higher as the volume of the gas explosion chamber is required to be larger due to the yield factor, and the volume is increased, and the volume of the expansion gas is exponentially increased during the gas explosion, so that huge impact noise is generated. And when the materials are subjected to steam explosion in the heating and pressurizing bin, as the materials in the heating and pressurizing bin are more, the central part and the edge part of the materials are different in air resistance during the steam explosion, so that the difference is formed in product quality, and the processing and the utilization of the subsequent process are not facilitated.

FIG. 1 is a schematic structural view of a continuous steam explosion machine according to the present invention.

Referring to fig. 1, for ease of understanding and description, reference is made to a work floor, an up-down direction of the work floor is hereinafter an up-down direction, and a horizon direction of the work floor is hereinafter a horizontal direction.

Referring to fig. 1, the present application provides a continuous steam explosion machine, which includes a feeder 100, a low-temperature low-pressure chamber 200, a high-temperature high-pressure chamber 300, a reciprocating type blanking device 400, a steam explosion chamber 500, and a discharging mechanism 600, which are communicated. The feeder 100 is used for conveying external materials into the low-temperature low-pressure chamber 200 and performing heating pretreatment in the low-temperature low-pressure chamber 200. The pretreated material in the low-temperature low-pressure chamber 200 is conveyed into the high-temperature high-pressure chamber 300, and is subjected to high-temperature high-pressure treatment and heat preservation pressure maintaining treatment in the high-temperature high-pressure chamber 300. The reciprocating type blanking device 400 can reciprocate, so that the materials subjected to heat preservation and pressure maintaining treatment in the high-temperature and high-pressure chamber 300 are input into the reciprocating type blanking device 400. The reciprocating type blanking device 400 can be communicated with the steam explosion chamber 500 in the reciprocating type moving process, so that the pressure of materials in the reciprocating type blanking device 400 is instantaneously reduced in the process of falling into the steam explosion chamber 500, and the materials are subjected to steam explosion. Compared with the steam explosion machine with large capacity and one-time steam explosion processing in the related art, the continuous steam explosion machine divides the steam explosion process of the material into multiple steam explosion, and can reduce the volume of the single steam exploded material in the steam explosion chamber 500 under the condition that the steam explosion efficiency is not affected, thereby reducing the noise generated during the steam explosion.

Compared with the steam explosion process in the related art, the processing process reduces the processes of loading and taking out the heating and pressurizing bin of the charging barrel, and also reduces the process links of charging barrel dumping and cleaning. The time occupation ratio of effective operation links in the process is large, and the production efficiency is high. (the effective operation time links are that steam is introduced, pressurized and heated, and steam exploded.)

Referring to fig. 1, in the present embodiment, a feeder 100 is used for conveying materials into a low-temperature low-pressure chamber 200, which is disposed above a working floor and above the low-temperature low-pressure chamber 200. In some embodiments, the feeder 100 is a crawler conveyor or a screw elevator for continuously conveying materials into the low temperature and low pressure chamber 200, thereby improving the working efficiency of the continuous steam explosion machine.

In the present embodiment, the low temperature and low pressure chamber 200 is located above the high temperature and high pressure chamber 300, the low temperature and low pressure chamber 200 extends in the horizontal direction, and the length direction of the low temperature and low pressure chamber 200 is parallel to the horizontal direction. A hopper 210 is provided at an upper side of one end of the low-temperature and low-pressure chamber 200, and a radius of the hopper 210 is gradually increased from bottom to top. When the material falls from the discharge port of the feeder 100 under the action of gravity, the material is input into the low-temperature and low-pressure chamber 200 through the hopper 210, so that the material is prevented from leaking to the outside.

A screw conveyor 220 is provided in the low-temperature and low-pressure chamber 200, and the screw conveyor 220 extends in the longitudinal direction of the low-temperature and low-pressure chamber 200. After the materials on the feeder 100 enter the low temperature and low pressure chamber 200, the materials are conveyed to the other end of the low temperature and low pressure chamber 200 by the screw conveyor 220, so that the materials are conveyed into the high temperature and high pressure chamber 300.

A heating device (not shown) is further disposed on the low-temperature and low-pressure chamber 200 to perform heating pretreatment on the materials in the low-temperature and low-pressure chamber 200, so as to reduce the treatment time of the high-temperature and high-pressure chamber 300 and improve the material treatment efficiency. On the one hand, the materials will roll and move during the transportation of the screw conveyor 220, and under the action of the heating device, the materials can be fully heated and pretreated, so that the overall working efficiency of the material in the steam explosion process is improved. On the other hand, the low-temperature and low-pressure chamber 200 can play a role of temporarily storing materials so as to ensure stable material supply of the continuous steam explosion machine.

The screw conveyor 220 includes a rotation shaft (not shown), a screw conveying sheet (not shown), and a power source (not shown), and the rotation shaft extends in a length direction of the low-temperature low-pressure chamber 200 to penetrate the low-temperature low-pressure chamber 200. The screw conveyor sheet extends spirally along the circumferential direction of the rotating shaft. The power source is in transmission connection with the screw conveyor 220 to drive the rotating shaft to rotate, so that the screw conveyor sheet rotates around the axis of the rotating shaft. When the screw conveying sheet rotates, the material moves under the action of the screw conveying sheet.

In some embodiments, the length direction of the low-temperature and low-pressure chamber 200 is inclined with respect to the horizontal direction, so that the material in the low-temperature and low-pressure chamber 200 moves under the action of gravity, and the transportation efficiency of the screw conveyor 220 is improved. In some embodiments, the cryogenic low pressure chamber 200 is provided with one end of the hopper 210 lower than the other end of the cryogenic low pressure chamber 200.

Fig. 2 is an enlarged view of the structure at a in fig. 1.

Referring to fig. 1 and 2, in the present embodiment, the high temperature and high pressure chamber 300 is located below the low temperature and low pressure chamber 200, the high temperature and high pressure chamber 300 is communicated with one end of the low temperature and low pressure chamber 200, which is away from the hopper 210, through a valve member, the high temperature and high pressure chamber 300 extends in a horizontal direction, and a length direction of the high temperature and high pressure chamber 300 is parallel to the horizontal direction. In some embodiments, the length direction of the high temperature and high pressure chamber 300 is angled from the horizontal angle of the work surface to facilitate the transport of materials within the high temperature and high pressure chamber 300.

The valve communicated between the feed inlet of the high-temperature high-pressure chamber 300 and the discharge outlet of the low-temperature low-pressure chamber 200 is a star-shaped blanking valve, so that materials can be input into the high-temperature high-pressure chamber 300 from the low-temperature low-pressure chamber 200 under the condition that the pressure difference exists between the high-temperature high-pressure chamber 300 and the low-temperature low-pressure chamber 200. In addition, the star-shaped blanking valve can isolate the low-temperature low-pressure chamber 200 from the high-temperature high-pressure chamber 300.

Referring to fig. 1 and 2, in the present embodiment, a first discharge valve 310 and a second discharge valve 320 are disposed on a high temperature and high pressure chamber 300, and the first discharge valve 310 and the second discharge valve 320 can convey the material in the high temperature and high pressure chamber 300 into a reciprocating type blanking device 400. The first discharge valve 310 and the second discharge valve 320 are located at one end of the high temperature and high pressure chamber 300 away from the feed inlet, and the first discharge valve 310 and the second discharge valve 320 are disposed at intervals along the length direction of the high temperature and high pressure chamber 300.

The high temperature and high pressure chamber 300 is provided with a plurality of steam inlets (not shown in the figure), and the steam inlets are communicated with an external steam source, so that external high temperature and high pressure steam can enter the high temperature and high pressure chamber 300 through the steam inlets for heating and pressurizing the pretreated material and maintaining the temperature and pressure.

The steam inlets are arranged at intervals along the length direction of the high-temperature high-pressure chamber 300, the steam inlets are positioned on the same side of the high-temperature high-pressure chamber 300, and the steam inlets and the feeding openings of the star-shaped blanking valve communicated with the high-temperature high-pressure chamber 300 are respectively positioned at two ends of the high-temperature high-pressure chamber 300. A steam valve (not shown in the figure) is arranged at the steam inlet, and the continuous steam explosion machine can control the pressure and flow of each steam inlet by adjusting the steam valve, so that the heating and the pressurization of each part in the high-temperature and high-pressure chamber 300 are realized.

The steam input by the steam inlet diffuses from one end to the other end of the high-temperature high-pressure chamber 300, so that in the moving process of the material in the high-temperature high-pressure chamber 300 from the feed inlet to the first discharge valve 310 and the second discharge valve 320, the steam gradually permeates into pores and cell walls among fibers under the action of the steam, hydrogen bonding is generated between the steam and partial hydroxyl groups of cellulose, the cellulose, hemicellulose and lignin begin to soften and degrade under the combined action of the steam and heat, low-molecular substances begin to dissolve out, and the connecting action among the fibers begins to weaken the steam to gradually permeate into gaps and cell walls among the material so as to facilitate the subsequent steam explosion process.

The high temperature and high pressure chamber 300 is provided therein with a screw conveyor 330, so that the material entering the high temperature and high pressure chamber 300 can be conveyed from the feed inlet of the high temperature and high pressure chamber 300 to the first discharge valve 310 and the second discharge valve 320 under the action of the screw conveyor 330. In some embodiments, the first discharge valve 310 and the second discharge valve 320 are star-shaped discharge valves, so as to enhance the connection strength between the high-temperature and high-pressure chamber 300 and the reciprocating type discharge device 400.

In this embodiment, the reciprocating type blanking device 400 is located below the high temperature and high pressure chamber 300, and is close to one end of the first discharging valve 310 and the second discharging valve 320 of the high temperature and high pressure chamber 300. The reciprocating type discharging device 400 extends along the length direction of the high temperature and high pressure chamber 300, and can reciprocate along the length direction of the high temperature and high pressure chamber 300.

The reciprocating type blanking device 400 is internally provided with a first middle cavity 410 and a second middle cavity 420, and the first middle cavity 410 and the second middle cavity 420 are arranged at intervals along the length direction of the reciprocating type blanking device 400. The spacing between the first intermediate chamber 410 and the second intermediate chamber 420 is smaller than the spacing between the first discharge valve 310 and the second discharge valve 320. The first intermediate chamber 410 can be communicated with the high-temperature and high-pressure chamber 300 through the first discharge valve 310, the second intermediate chamber 420 can be communicated with the high-temperature and high-pressure chamber 300 through the second discharge valve 320, and the first intermediate chamber 410 and the second intermediate chamber 420 can also be communicated with the steam explosion chamber 500.

During one reciprocation of the reciprocating type discharging device 400, the first intermediate chamber 410 is spaced apart from the second intermediate chamber 420 and communicates with the high temperature and high pressure chamber 300. When the reciprocating type discharging device 400 moves along the length direction thereof, first the first intermediate chamber 410 is communicated with the high temperature and high pressure chamber 300, and the material in the high temperature and high pressure chamber 300 enters the first intermediate chamber 410 through the first discharging valve 310. The second intermediate chamber 420 is communicated with the steam explosion chamber 500, and the materials in the second intermediate chamber 420 enter the steam explosion chamber 500 and are subjected to steam explosion. Then the reciprocating type blanking device 400 is reset, so that the first intermediate cavity 410 is communicated with the steam explosion chamber 500, materials in the first intermediate cavity 410 enter the steam explosion chamber 500 and are subjected to steam explosion, the second intermediate cavity 420 is communicated with the high-temperature and high-pressure chamber 300, and materials in the high-temperature and high-pressure chamber 300 enter the second intermediate cavity 420. The working efficiency of the continuous steam explosion machine can be improved by the interval working of the first middle cavity 410 and the second middle cavity 420.

In some embodiments, the reciprocating type blanking device 400 is provided with a valve element at one side of the first middle cavity 410 and the second middle cavity 420 facing the steam explosion chamber 500, and the first middle cavity 410 and the second middle cavity 420 are detachably communicated with the steam explosion chamber 500 through the valve element. In other embodiments, a driving device (not shown) is disposed outside the reciprocating type blanking device 400, and the driving device is in transmission connection with the reciprocating type blanking device 400, so as to drive the reciprocating type blanking device 400 to reciprocate.

Referring to fig. 1 and 2, in the present embodiment, a steam explosion chamber 500 is located below the reciprocating type blanking device 400, and the steam explosion chamber 500 can be respectively communicated with the first middle chamber 410 and the second middle chamber 420, so that the materials in the first middle chamber 410 and the second middle chamber 420 are instantaneously depressurized to be steam exploded after falling into the steam explosion chamber 500. And the first middle cavity 410 and the second middle cavity 420 are communicated with the steam explosion chamber 500 at intervals, so that the steam explosion efficiency of the continuous steam explosion machine is improved under the condition of reducing the noise during the steam explosion.

After the first middle cavity 410 and the second middle cavity 420 are communicated with the steam explosion chamber 500, the material enters the steam explosion chamber 500, the pressure inside the material is greater than the pressure inside the steam explosion chamber 500, and at the moment, steam in the material begins to escape and release pressure. When the process is sudden in a short time, the internal steam of the material cells is not released from the pores, the material cells can be exploded due to the huge pressure of the steam, the structures of cellulose, hemicellulose and lignin are destroyed under the action of high temperature and high pressure, the hydrogen bonds among the cellulose are broken, the connection among the fibers is reduced, and the cellulose, the hemicellulose and the lignin are separated. So as to facilitate the sieving of cellulose, hemicellulose and lignin.

Referring to fig. 1 and 2, in the present embodiment, the steam explosion chamber 500 is located below the horizon of the working floor to reduce noise when the steam explosion chamber 500 is steam exploded. The upper end of the steam explosion chamber 500 protrudes upward to form a connection cylinder 510, the upper end of the connection cylinder 510 can communicate with the first intermediate chamber 410 or the second intermediate chamber 420, and the outer circumference of the connection cylinder 510 is provided with a muffler (not shown).

The steam explosion chamber 500 is provided with pressure relief meshes, and the periphery side of the steam explosion chamber 500 is provided with a heat absorbing component for absorbing heat during steam explosion of materials. When the material is steam exploded, the steam in the material diffuses into the steam explosion chamber 500 and is discharged to the outside through the pressure relief mesh. In some embodiments, the pressure relief mesh is a plurality of, a plurality of pressure relief meshes are disposed at intervals on the perimeter side of the steam explosion chamber 500.

The heat absorbing assembly (not shown) comprises a heat absorbing pipe network and a heat transmitting pipe, and the heat absorbing pipe network is communicated with the heat transmitting pipe. The heat absorption pipe network is arranged on the periphery of the steam explosion chamber 500 to absorb heat generated during steam explosion of materials. The heat pipe extends and winds around the periphery of the low-temperature low-pressure chamber 200 to provide the heat absorbed by the heat absorption pipe network to the low-temperature low-pressure chamber 200, so that the cyclic utilization of the heat of the continuous steam explosion machine can be improved, the energy utilization rate is improved, and the production cost is reduced. In some embodiments, the heat absorption pipe network is used for absorbing the steam discharged to the outside through the pressure relief mesh and transmitting the steam into the heat transmission pipe.

In some embodiments, the heat sink assembly is present with a heating device, and the heating device is used to stabilize the temperature within the cryogenic low pressure chamber 200. In some embodiments, only the heat absorbing assembly is provided on the continuous steam explosion machine.

Referring to fig. 1, in the present embodiment, a discharging mechanism 600 is provided at the lower end of the steam explosion chamber 500, a steam explosion discharging valve is provided on the steam explosion discharging port, and the discharging mechanism 600 can be communicated with the steam explosion chamber 500. The discharging mechanism 600 comprises a discharging conveyor 610 and a discharging spiral elevator 620, wherein the discharging conveyor 610 is positioned below the steam explosion chamber 500 and is communicated with a steam explosion blanking valve. The discharge conveyor 610 extends in a horizontal direction, which transports the material within the steam explosion chamber 500 in a direction away from the steam explosion chamber 500 and to the discharge screw elevator 620.

In some embodiments, outfeed conveyor 610 may be a screw conveyor. The screw conveyor may also be a crawler conveyor as long as it is capable of achieving a function of conveying the material to the horizon of the work floor.

The discharging screw elevator 620 extends in the up-down direction, and one end thereof is located under the work floor and communicates with the discharging conveyor 610; the other end of the discharging screw elevator 620 is located on the working floor to transport the material transported by the discharging conveyor 610 to the outside, so that the subsequent process is facilitated. In some embodiments, a working chamber is formed below the horizon of the working floor, and is configured to house the steam explosion chamber 500, the discharge conveyor 610, and a portion of the discharge screw elevator 620.

In some embodiments, temperature sensors are disposed on the low-temperature low-pressure chamber 200, the high-temperature high-pressure chamber 300 and the steam explosion chamber 500, so as to monitor the temperatures of the low-temperature low-pressure chamber 200, the high-temperature high-pressure chamber 300 and the steam explosion chamber 500 in real time, thereby facilitating the adjustment of the temperatures in the low-temperature low-pressure chamber 200 and the high-temperature high-pressure chamber 300.

In this embodiment, the continuous steam explosion machine further comprises a control device (not shown in the figure), and the control device is located on the working floor, so as to facilitate the operation of operators. The control device can be electrically connected with the feeder 100, the low-temperature and low-pressure chamber 200, the high-temperature and high-pressure chamber 300, the reciprocating type blanking device 400, the steam explosion chamber 500 and the discharging mechanism 600, so as to control the start, stop and operation of each device, and can also be electrically connected with valve elements among the low-temperature and low-pressure chamber 200, the high-temperature and high-pressure chamber 300, the reciprocating type blanking device 400 and the steam explosion chamber 500 so as to control the on-off among the devices.

In some embodiments, a control device is electrically connected to the steam valve to be able to control the input of steam in the high temperature and high pressure chamber 300. The control device can adjust the temperature change of different areas in the high-temperature high-pressure chamber 300 in real time so as to improve the efficiency of steam infiltration into the materials.

In another embodiment of the present application, the reciprocating type blanking device 400 is provided with only the first middle cavity 410, and the first middle cavity 410 is communicated with the high temperature and high pressure chamber 300, so that the material in the high temperature and high pressure chamber 300 enters the first middle cavity 410; the steam explosion chamber 500 communicates with the first intermediate chamber 410. After the processed material in the high-temperature and high-pressure chamber 300 enters the first intermediate chamber 410, the reciprocating type blanking device 400 moves to enable the first intermediate chamber 410 to be communicated with the steam explosion chamber 500, and the material in the first intermediate chamber 410 enters the steam explosion chamber 500 for steam explosion.

Referring to fig. 1 and 2, there is provided a continuous steam explosion machine, in which a material enters one end of a low temperature and low pressure chamber 200 through a feeder 100 and moves toward the other end of the low temperature and low pressure chamber 200 under the action of a screw conveyor 220 in the low temperature and low pressure chamber 200. The materials are heat-pretreated in the low-temperature low-pressure chamber 200 so as to facilitate the subsequent processing of the high-temperature high-pressure chamber 300 and improve the working efficiency.

The materials enter the high-temperature and high-pressure chamber 300 from the low-temperature and low-pressure chamber 200 through the star-shaped blanking valve and move towards the first blanking valve and the second blanking valve under the action of the screw conveyor 330 in the high-temperature and high-pressure chamber 300. The material is gradually infiltrated by the steam during the movement of the high temperature and high pressure chamber 300. The continuous steam explosion machine can adjust the temperature and the pressure of different areas in the high-temperature high-pressure chamber 300 in real time by controlling the flow and the pressure of steam input into the steam inlet, so as to improve the efficiency of steam infiltration into materials.

When the material moves to one end of the high temperature and high pressure chamber 300 where the first and second baiting valves are provided. First, the reciprocating type blanking device 400 moves, the first intermediate cavity 410 is communicated with the first blanking valve, and materials enter the first intermediate cavity 410 through the first blanking valve; the second intermediate chamber 420 communicates with the steam explosion chamber. Then the reciprocating type blanking device 400 resets and moves, so that the first intermediate cavity 410 is communicated with the steam explosion cavity, and the material in the first intermediate cavity 410 enters the steam explosion chamber 500 and is steam exploded in the steam explosion chamber 500; the second intermediate chamber 420 is communicated with a second blanking valve, and the material in the high-temperature and high-pressure chamber 300 enters the second intermediate chamber 420 through the second blanking valve. The reciprocating type discharging device 400 reciprocates to make the steam explosion chamber 500 perform steam explosion continuously in a circulating manner, thereby improving the working efficiency of the continuous steam explosion machine.

In the application, the material enters the low-temperature low-pressure chamber 200 for pretreatment, and then enters the high-temperature high-pressure chamber 300 from the low-temperature low-pressure chamber 200 for high-temperature high-pressure treatment and heat preservation pressure maintaining treatment. The material in the high-temperature and high-pressure chamber 300 partially enters the reciprocating blanking machine, and the reciprocating blanking machine is communicated with the steam explosion chamber 500, so that the material in the reciprocating blanking machine is steam exploded. On the one hand, the materials in the high-temperature and high-pressure chamber 300 can be fully treated in a high-temperature and high-pressure environment, so that insufficient vapor permeation in the materials is prevented, the material separation rate after vapor explosion is improved, and the difference of the vapor explosion effects of the bamboo materials is reduced. On the other hand, the batch and multiple steam explosion of the materials can reduce the volume of single steam explosion materials in the steam explosion chamber 500 and reduce the noise generated during steam explosion under the condition of not affecting the steam explosion efficiency.

While the present application has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration rather than of limitation. As the present application may be embodied in several forms without departing from the spirit or essential attributes thereof, it should be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the metes and bounds of the claims, or equivalences of such metes and bounds are therefore intended to be embraced by the appended claims.

Claims (10)

1. A continuous steam explosion machine, comprising:

the low-temperature low-pressure chamber is used for accommodating materials and preheating the materials;

the high-temperature high-pressure chamber is communicated with the low-temperature low-pressure chamber, the material after the heating pretreatment in the low-temperature low-pressure chamber enters the high-temperature high-pressure chamber, and a plurality of steam inlets are formed in the high-temperature high-pressure chamber and are used for heating, pressurizing, preserving heat and maintaining pressure of the pretreated material;

the reciprocating type blanking device is internally provided with a first middle cavity which is communicated with the high-temperature high-pressure chamber so that the materials in the high-temperature high-pressure chamber enter the first middle cavity;

a steam explosion chamber in communication with the first intermediate chamber;

the low-temperature low-pressure chamber, the high-temperature high-pressure chamber, the reciprocating type blanking device and the steam explosion chamber are communicated through valve members, after materials processed in the high-temperature high-pressure chamber enter the first middle chamber, the reciprocating type blanking device moves to enable the first middle chamber to be communicated with the steam explosion chamber, and the materials in the first middle chamber are subjected to instantaneous depressurization after entering the steam explosion chamber to be subjected to steam explosion.

2. The continuous steam explosion machine according to claim 1, wherein a first discharge valve and a second discharge valve are arranged on the high-temperature high-pressure chamber, the first discharge valve and the second discharge valve are located on the same side of the high-temperature high-pressure chamber, the first discharge valve and the second discharge valve are arranged at intervals along the length direction of the high-temperature high-pressure chamber, the second intermediate chamber is further arranged in the reciprocating type blanking device, the first intermediate chamber can be communicated with the high-temperature high-pressure chamber through the first discharge valve, the second intermediate chamber can be communicated with the high-temperature high-pressure chamber through the second discharge valve, the second intermediate chamber can also be communicated with the steam explosion chamber, and the first intermediate chamber and the second intermediate chamber are respectively communicated with the steam explosion chamber once in a reciprocating movement process of the reciprocating type blanking device.

3. The continuous steam explosion machine of claim 2, wherein a spacing between the first intermediate chamber and the second intermediate chamber is less than a spacing between the first discharge valve and the second discharge valve.

4. The continuous steam explosion machine according to claim 2, wherein a connecting cylinder is formed at the upper end of the steam explosion chamber in an upward protruding mode, the upper end of the connecting cylinder can be communicated with the first middle cavity or the second middle cavity, and a silencing device is arranged on the periphery of the connecting cylinder.

5. The continuous steam explosion machine of claim 1, wherein the steam explosion chamber is positioned below the horizon of the working floor to reduce noise during steam explosion of the steam explosion chamber.

6. The continuous steam explosion machine according to claim 5, wherein the steam explosion chamber is provided with pressure relief meshes, a heat absorbing component is arranged on the periphery of the steam explosion chamber and used for absorbing heat generated during steam explosion of the materials, and the heat absorbing component comprises a heat pipe which extends and is wound on the periphery of the low-temperature low-pressure chamber so as to supply heat for the low-temperature low-pressure chamber.

7. The continuous steam explosion machine according to claim 1, wherein a screw feeder is arranged in each of the low-temperature low-pressure chamber and the high-temperature high-pressure chamber.

8. The continuous steam explosion machine according to claim 1, wherein a plurality of steam inlets are arranged at intervals along the length direction of the high-temperature high-pressure chamber, the steam inlets are positioned at one side of the high-temperature high-pressure chamber, and the steam inlets and the feed inlets of the high-temperature high-pressure chamber are respectively positioned at two ends of the high-temperature high-pressure chamber.

9. The continuous steam explosion machine according to claim 1, further comprising a discharging mechanism, wherein a steam explosion discharging port is formed in the lower end of the steam explosion chamber, a steam explosion discharging valve is arranged on the steam explosion discharging port, and the discharging mechanism can be communicated with the steam explosion chamber.

10. The continuous steam explosion machine according to claim 1, further comprising a control device, wherein a steam valve is arranged at the steam inlet, the control device is electrically connected with the steam valve and the valve member, and the control device respectively controls the on-off of a plurality of steam valves so as to control the temperature change of different areas in the high-temperature high-pressure chamber.

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