Silencing high-efficiency ejection type steam explosion machine

Abstract

The utility model provides an efficient silencing ejection type steam explosion machine, which comprises a screw conveyor, a storage box, a feeding chamber, a steam explosion box, a storage tank and a base; the storage box, the feeding chamber, the steam explosion box, the storage tank and the base are sequentially arranged from top to bottom, and the screw conveyor is fixed on the side of the storage box; the feeding chamber is provided with an electric louver valve between the storage box and the steam explosion box; the steam explosion box and the storage tank are externally provided with a silencing shell; a stirrer is arranged in the steam explosion box; the feeding chamber is provided with a compressed air injection port; the steam explosion box is provided with a steam injection port; a piston type sealing valve is arranged between the steam explosion box and the storage tank; a support column and a guide cylinder are arranged in the storage tank; the upper end of the support column is connected with the piston type sealing valve, and the lower end of the support column is inserted into the guide cylinder; the support column is provided with an electromagnetic lock; a push cylinder is arranged below the guide cylinder, and a buffer damper is arranged between the push cylinder and the support column. The utility model can effectively improve the steam explosion processing quality of straw, has higher steam explosion efficiency, can automatically feed during steam explosion processing, has smaller noise, and is more conducive to the collection of the straw after steam explosion.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of crop straw dewaxing, and particularly relates to a sound-attenuating high-efficiency ejection type steam explosion machine. BACKGROUND

[0002] Corn straw is one of the most abundant lignocellulosic biomasses in crop residues, which is mainly composed of cellulose, hemicellulose and lignin combined by hydrogen bonds and other chemical bonds and molecular bonds, and is a high molecular compound with a complex polymer structure.

[0003] As a large agricultural country, China ranks second in the world in corn production, but the utilization rate of corn straw is less than 30%. If these corn straws are fully utilized, it will be very beneficial to solve the problems of resources and environment.

[0004] Steam explosion technology, as a corn straw treatment technology, is the most common method for treating lignocellulose. In the steam explosion treatment process, hemicellulose is partially hydrolyzed under high temperature and high pressure, lignin is softened, and then the crystallization between fiber cells is weakened by the force generated by instantaneous pressure reduction, so that the cell wall structure is destroyed, lignin is partially degraded, and cellulose is exposed.

[0005] Steam explosion technology was proposed by Mason in the 1920s, but the traditional technology not only requires high explosion pressure, but also has high technical requirements for equipment and operation control, so it is difficult to promote.

[0006] At present, with the gradual reduction of explosion pressure requirements, steam explosion application has been greatly developed. However, the existing steam explosion machines generally have low processing quality, low steam explosion efficiency, and need constant manual feeding during steam explosion processing, which not only has high labor intensity, but also has the problem of excessive noise during steam explosion processing, and the straw after steam explosion treatment is not conducive to collection. SUMMARY

[0007] In view of the problems in the prior art, the application provides a sound-attenuating high-efficiency ejection type steam explosion machine, which can further improve the steam explosion processing quality of straw, has higher steam explosion efficiency, can realize automatic feeding during steam explosion processing, can greatly improve the feeding efficiency compared with manual feeding, does not need to consume manpower, has smaller noise during steam explosion processing, and the straw after steam explosion treatment is more conducive to collection, and the whole process can realize unmanned steam explosion processing.

[0008] In order to achieve the above object, the present application adopts the following technical scheme: a sound-damping high-efficiency ejection type steam explosion machine, comprising a screw conveyor, a storage tank, a feeding chamber, a steam explosion tank, a storage box and a base; the storage box is fixed on the upper end of the base, and a discharge door is arranged on the side of the tank body of the storage box; the steam explosion tank is fixed on the upper end of the storage box and is communicated with the storage box; the feeding chamber is fixed on the upper end of the steam explosion tank and is communicated with the steam explosion tank; the storage tank is fixed on the upper end of the feeding chamber and is communicated with the feeding chamber; and the screw conveyor is fixed on the side of the storage tank.

[0009] A first electric louver valve is arranged at the communication port between the storage tank and the feeding chamber, and a second electric louver valve is arranged at the communication port between the feeding chamber and the steam explosion tank.

[0010] The tank bodies of the steam explosion tank and the storage box are each wrapped with a sound-damping shell.

[0011] A stirring motor is vertically fixed in the feeding chamber, and the motor shaft of the stirring motor penetrates into the steam explosion tank downward in a sealed manner; a multi-claw stirring head is arranged in the steam explosion tank, the rod body top end of the multi-claw stirring head is fixedly connected with the motor shaft of the stirring motor in a coaxial manner, and the claw end of the multi-claw stirring head faces downward.

[0012] A compressed air injection port is arranged on the tank body of the feeding chamber.

[0013] A steam injection port is arranged on the tank body of the steam explosion tank.

[0014] A piston type sealing valve is arranged at the communication port between the steam explosion tank and the storage box, the piston type sealing valve adopts a hollow disc structure, the disc top plate of the piston type sealing valve adopts a conical structure, two rows of air permeation holes are arranged on the disc peripheral ring plate of the piston type sealing valve in an axial direction, and a sealing ring is sleeved on the outside of the lower row of air permeation holes.

[0015] A support column and a guide cylinder are vertically arranged in the storage box; the support column is fixedly connected with the center of the disc bottom plate of the piston type sealing valve at the upper end, the lower end of the support column is inserted into the guide cylinder, and the lower end of the guide cylinder is fixedly connected with the top plate of the base.

[0016] An electromagnetic lock is fixedly installed on the outside of the top end of the guide cylinder, and an annular groove is arranged on the column body of the support column, and the lock tongue of the electromagnetic lock is used in cooperation with the annular groove.

[0017] A push air cylinder is vertically installed below the top plate of the base, the push air cylinder is coaxially distributed with the support column, a buffer damper is arranged between the cylinder rod top end of the push air cylinder and the column body bottom end of the support column, the upper end of the buffer damper is fixedly connected with the support column, and the lower end of the buffer damper is fixedly connected with the cylinder rod of the push air cylinder.

[0018] The present application has the following beneficial effects:

[0019] The silent and high-efficiency ejector-type steam explosion machine of the present invention can further improve the quality of steam explosion processing of straw, with higher steam explosion efficiency. Automatic feeding can be achieved during steam explosion processing, which can significantly improve feeding efficiency compared with manual feeding, and no manpower is required. The noise during steam explosion processing is lower, and the straw after steam explosion processing is easier to collect. The entire process can achieve unmanned steam explosion processing. Attached Figure Description

[0020] Fig. 1 This is a schematic diagram of the structure of a silent and high-efficiency ejector-type steam explosion machine (all electric louver valves are shown in the open state) of the present invention (the piston-type sealing valve is in the sealed position);

[0021] Fig. 2 This is a schematic diagram of the structure of a silent and efficient ejector-type steam explosion machine of the present invention (all electric louver valves are shown in the open state) (the piston-type sealing valve is in the unsealed position);

[0022] In the diagram, 1—screw conveyor, 2—storage bin, 3—feeding chamber, 4—air explosion box, 5—storage bin, 6—base, 7—discharge gate, 8—first electric louver valve, 9—second electric louver valve, 10—mixing motor, 11—multi-claw mixing head, 12—compressed air injection port, 13—steam injection port, 14—piston-type sealing valve, 15—vent hole, 16—sealing ring, 17—support column, 18—guide cylinder, 19—electromagnetic lock, 20—annular groove, 21—push cylinder, 22—buffer damper, 23—silencing shell. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0024] like Figs. 1-2 As shown, a silent and high-efficiency catapult-type steam explosion machine includes a screw conveyor 1, a storage box 2, a feeding chamber 3, a steam explosion box 4, a storage box 5, and a base 6. The storage box 5 is fixedly mounted on the upper end of the base 6, and a discharge door 7 is provided on the side of the storage box 5. The steam explosion box 4 is fixedly mounted on the upper end of the storage box 5 and is connected to the storage box 5. The feeding chamber 3 is fixedly mounted on the upper end of the steam explosion box 4 and is connected to the steam explosion box 4. The storage box 2 is fixedly mounted on the upper end of the feeding chamber 3 and is connected to the feeding chamber 3. The screw conveyor 1 is fixedly mounted on the side of the storage box 2.

[0025] A first electric louver valve 8 is installed at the connection between the storage tank 2 and the feeding chamber 3, and a second electric louver valve 9 is installed at the connection between the feeding chamber 3 and the steam explosion box 4.

[0026] Both the gas explosion box 4 and the storage box 5 are covered with a sound-absorbing outer shell 23.

[0027] A stirring motor 10 is vertically fixed in the feed chamber 3, and the motor shaft of the stirring motor 10 penetrates into the steam explosion box 4 in a sealed manner downward; a multi-claw stirring head 11 is arranged inside the steam explosion box 4, the rod top of the multi-claw stirring head 11 is fixedly connected with the motor shaft of the stirring motor 10 in a coaxial manner, and the claw end of the multi-claw stirring head 11 faces downward. Specifically, the number of claw end fingers of the multi-claw stirring head 11 is 3-5.

[0028] A compressed air injection port 12 is arranged on the box body of the feed chamber 3.

[0029] A steam injection port 13 is arranged on the box body of the steam explosion box 4.

[0030] A piston type sealing valve 14 is arranged at the communication opening between the steam explosion box 4 and the storage box 5, the piston type sealing valve 14 adopts a hollow disc structure, the disc top plate of the piston type sealing valve 14 adopts a conical structure, two rows of air permeable holes 15 are arranged on the disc peripheral ring plate of the piston type sealing valve 14 in an axial direction, and a sealing ring 16 is sleeved on the outer side of the lower row of air permeable holes 15. Specifically, the high pressure of the steam explosion box 4 can be balanced with the internal cavity of the piston type sealing valve 14 through the upper row of air permeable holes 15, and the outer side of the lower row of air permeable holes 15 is sleeved with the sealing ring 16, so that the high pressure of the internal cavity of the piston type sealing valve 14 can act on the sealing ring 16 through the lower row of air permeable holes 15, so that the sealing ring 16 can be more tightly pressed on the inner wall of the box body of the steam explosion box 4, and the sealing effect of the piston type sealing valve 14 on the steam explosion box 4 is improved.

[0031] A support column 17 and a guide cylinder 18 are vertically arranged in the storage box 5; the upper end of the support column 17 is fixedly connected with the center of the disc bottom plate of the piston type sealing valve 14, the lower end of the support column 17 is inserted into the guide cylinder 18, and the lower end of the guide cylinder 18 is fixedly connected with the top plate of the base 6.

[0032] An electromagnetic lock 19 is fixedly installed on the outer top end of the guide cylinder 18, and an annular groove 20 is arranged on the column body of the support column 17, and the lock tongue of the electromagnetic lock 19 is used in cooperation with the annular groove 20.

[0033] A push-up air cylinder 21 is vertically installed below the top plate of the base 6, the push-up air cylinder 21 is coaxially distributed with the support column 17, a buffer damper 22 is arranged between the cylinder rod top end of the push-up air cylinder 21 and the column body bottom end of the support column 17, the upper end of the buffer damper 22 is fixedly connected with the support column 17, and the lower end of the buffer damper 22 is fixedly connected with the cylinder rod of the push-up air cylinder 21.

[0034] The use process of the application will be described below in combination with the drawings:

[0035] Firstly, the straw raw material is sent into the feeding port of the screw conveyor 1, and then sent into the storage box 2 through the discharge port of the screw conveyor 1. When the storage box 2 stores a certain amount of straw raw material, the first electric louver valve 8 is controlled to open, and the straw raw material in the storage box 2 falls into the feeding chamber 3 through the opened first electric louver valve 8.

[0036] When the straw raw material falls into the feeding chamber 3, the first electric louver valve 8 is controlled to close, and then a certain amount of compressed air is injected into the feeding chamber 3 through the compressed air injection port 12, so that the air pressure of the feeding chamber 3 is increased.

[0037] When the pressure of the feeding chamber 3 is increased, the second electric louver valve 9 is controlled to open, so that the feeding chamber 3 is communicated with the steam explosion box 4 below. Since the air pressure in the feeding chamber 3 is higher than that in the steam explosion box 4, under the action of pressure difference and gravity, the straw raw material in the feeding chamber 3 falls into the steam explosion box 4 quickly when the second electric louver valve 9 is opened.

[0038] When the straw raw material falls into the steam explosion box 4, the second electric louver valve 9 is controlled to close, and then high-pressure steam is injected into the steam explosion box 4 through the steam injection port 13 until the pressure in the steam explosion box 4 reaches 2.5-4 MPa. During the injection of high-pressure steam, the stirring motor 10 is started synchronously, and the multi-claw stirring head 11 is rotated by the stirring motor 10 to continuously stir the straw raw material in the steam explosion box 4, so that the straw raw material is fully contacted with the high-pressure steam.

[0039] When the pressure in the steam explosion box 4 reaches the set value, the injection of high-pressure steam is stopped, and then the stirring of the straw raw material is continued for a period of time. When the stirring time is over, the electromagnetic lock 19 is started to control the retraction of the locking tongue. At the moment when the locking tongue is separated from the annular groove 20, the limit of the support column 17 is released, the high pressure in the steam explosion box 4 is quickly released and acts on the piston type sealing valve 14, driving the piston type sealing valve 14 to shoot downward at high speed and realize valve opening. During the high-speed falling of the piston type sealing valve 14, the buffer damper 22 slows down and buffers the piston type sealing valve 14 and the support column 17 until the piston type sealing valve 14 and the support column 17 stop falling, and the buffer damper 22 is in the retracted state.

[0040] At the moment when the piston type sealing valve 14 is opened, the pressure in the steam explosion box 4 decreases rapidly. During the pressure reduction, the straw raw material in the steam explosion box 4 is quickly completed steam explosion, and the steam exploded straw raw material falls into the storage box 5 through the annular opening formed after the valve opening. Then, the discharge door 7 is opened, and the steam exploded straw raw material can be taken out.

[0041] When the storage box 5 finishes unloading, the cylinder rod of the push cylinder 21 is controlled to extend upward, driving the buffer damper 22, the support column 17 and the piston sealing valve 14 to lift together until the piston sealing valve 14 returns to the initial closed valve position, at this time the annular groove 20 on the support column 17 is also lifted to the initial height, then the lock tongue of the electromagnetic lock 19 is controlled to pop out, and the lock tongue is inserted into the annular groove 20 again, completing the repositioning of the support column 17.

[0042] When the support column 17 finishes repositioning, the cylinder rod of the push cylinder 21 is controlled to retract downward to the initial position, and in the retraction process of the cylinder rod, since the upper support column 17 has been repositioned, the buffer damper 22 in the retraction state is pulled to the initial length again, preparing for the next deceleration buffer braking.

[0043] Repeating the above working process can meet the requirements of high-efficiency steam explosion processing of straws under industrialization.

[0044] The scheme in the embodiment is not used to limit the patent protection scope of the present application, and equivalent implementation or changes without departing from the present application are all included in the patent scope of the present application.

Claims

1. A silent, high-efficiency catapult-type steam explosion machine, characterized in that: The system includes a screw conveyor, a storage bin, a feeding chamber, a steam explosion chamber, a storage bin, and a base. The storage bin is fixedly mounted on the upper part of the base, and a discharge door is provided on the side of the storage bin. The steam explosion chamber is fixedly mounted on the upper part of the storage bin and is connected to the storage bin. The feeding chamber is fixedly mounted on the upper part of the steam explosion chamber and is connected to the steam explosion chamber. The storage bin is fixedly mounted on the upper part of the feeding chamber and is connected to the feeding chamber. The screw conveyor is fixedly mounted on the side of the storage bin. A first electric actuator is provided at the connection between the storage bin and the feeding chamber. A second electrically operated louvered valve is installed at the connection between the feeding chamber and the explosion chamber; both the explosion chamber and the storage chamber are covered with a sound-absorbing shell; a stirring motor is vertically fixed inside the feeding chamber, with its motor shaft facing downwards and sealed into the explosion chamber; a multi-claw stirring head is installed inside the explosion chamber, with the top of the rod of the multi-claw stirring head coaxially fixed to the motor shaft of the stirring motor, and the claws of the multi-claw stirring head facing downwards; a compressed air injection port is provided on the body of the feeding chamber; The explosion chamber is equipped with a steam injection port. A piston-type sealing valve is installed at the connection between the explosion chamber and the storage tank. The piston-type sealing valve has a hollow disc structure, and the top plate of the disc has a conical structure. Two rows of vent holes are axially arranged on the circumferential plate of the disc, and a sealing ring is fitted on the outside of the lower row of vent holes. A support column and a guide cylinder are vertically installed inside the storage tank. The upper end of the support column is fixedly connected to the center of the bottom plate of the piston-type sealing valve, and the lower end of the support column is inserted into the guide cylinder. Inside the cylinder, the lower end of the guide cylinder is fixedly connected to the top plate of the base; an electromagnetic lock is fixedly installed on the outside of the top of the guide cylinder, and an annular groove is provided on the column of the support column, the locking tongue of the electromagnetic lock is used in conjunction with the annular groove; a push cylinder is vertically installed below the top plate of the base, the push cylinder is coaxially distributed with the support column, and a buffer damper is provided between the top of the cylinder rod of the push cylinder and the bottom of the column of the support column, the upper end of the buffer damper is fixedly connected to the support column, and the lower end of the buffer damper is fixedly connected to the cylinder rod of the push cylinder.

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