CN201485749U - Wet process feed preparation equipment for grass fiber raw materials and roller type grass washing machine thereof - Google Patents
Wet process feed preparation equipment for grass fiber raw materials and roller type grass washing machine thereof Download PDFInfo
- Publication number
- CN201485749U CN201485749U CN2009201729649U CN200920172964U CN201485749U CN 201485749 U CN201485749 U CN 201485749U CN 2009201729649 U CN2009201729649 U CN 2009201729649U CN 200920172964 U CN200920172964 U CN 200920172964U CN 201485749 U CN201485749 U CN 201485749U
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- 238000000034 method Methods 0.000 title claims abstract description 21
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 79
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- 241000320679 Tuctoria Species 0.000 claims abstract description 14
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Abstract
The utility model provides wet process feed preparation equipment for grass fiber raw materials, which is sequentially provided with a grass cutter, a roller type grass washing machine, a spiral grass extruder and an intermittent boiling device. The roller type grass washing machine comprises a water tank which is filled with water; the bottom of the water tank is conical, and two ends of the water tank are provided with a feed inlet and a discharge outlet respectively; a plurality of cleat rollers are sequentially arranged in parallel and at intervals on the upper part of the water tank along a vertical direction of a connection line of the feed inlet and the discharge outlet, and a plurality of the cleat rollers are arranged in the same horizontal plane; and the bottom of the water tank is provided with an automatic blowdown system capable of discharging impurities. The wet process feed preparation equipment adopts the roller type grass washing machine to wash dusts on the surface of the grass and remove a large amount of the dust, gravels and heavy impurities in the grass, so the method can effectively remove the various impurities in the grass raw material to keep high cleanliness of raw material, stabilize and improve the quality of paper pulp, improve the operating environment in a factory and ensure the safety of consequent devices; and the equipment has the advantages of reasonable allocation, stable running, good quality of finished pulp and simple operation.
Description
Technical Field
The utility model relates to a device of prepareeing material of raw materials among the paper-making technology especially relates to the wet process equipment of prepareeing material of grass fibre raw materials among the paper-making industry and roll-type grass washer thereof.
Background
The grass raw material pulping has a long history in China, China is also the country with the highest yield of grass fiber pulp in the world at present, and the non-wood pulp still accounts for the vast majority of the yield of the original pulp in China so far, thus forming the characteristic of the paper making industry in China. The core problem of the pulping pollution of the grass fiber raw material is the pollution problems of high waste water discharge pollution load, large treatment difficulty and the like caused by low black liquor extraction rate and unfavorable alkali recovery of black liquor property. Furthermore, the reason for the difficulty in extracting the straw pulp black liquor is that the straw pulp has poor drainability, and the ash content (silicon) and sugar content in the black liquor are high, so that the black liquor has high viscosity and brings about the difficulty in evaporation and combustion. Therefore, the strengthening of the stock preparation to remove harmful substances in the straw is the most important part for preparing the straw pulp.
The domestic intermittent cooking pulping still uses dry-method material preparation, wherein the dry-method material preparation mainly comprises the steps of removing heavy impurities by a roller type dust remover (or a double-cone dust remover), separating light impurities such as fine powder dust and the like, and removing the light impurities by a settling chamber and a water film dust remover. In the production process, due to the reasons of management and maintenance, a negative pressure centrifugal fan for dust removal is rarely used, so that dust in a cutting work section flies, the surrounding environment is very severe, most of dust and impurities enter an intermittent cooking device, and difficulty is brought to black liquor extraction and evaporation; and the prepared paper pulp has dark color and poor quality, and the black liquor has high silicon content, so the application of the paper pulp, the recovery of waste liquor and the workshop operation environment are seriously influenced.
Therefore, the utility model discloses the people relies on many years's relevant design and manufacturing experience, proposes a wet process of prepareeing material method, the equipment of prepareeing material and the roll-type grass washer of the grass fibre raw materials that the operation is stable and the pulping quality is good to overcome the defect of current structure.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an equipment configuration is reasonable, the operation is stable, the wet process of the grass fiber raw materials of pulping is of high quality and easy operation prepares material equipment and roll-type grass washer to be used for carrying out intermittent type cooking to the grass fiber raw materials.
The utility model aims to realize the wet material preparation equipment of the grass fiber raw material, which is sequentially provided with a grass cutter, a roller type grass washer, a spiral grass extruder and an intermittent cooking device; the roller type grass washing machine comprises a water tank filled with water, the bottom of the water tank is in a conical shape, a feed port and a discharge port are respectively arranged at two ends of the water tank, a plurality of horn rolls are sequentially arranged on the upper part of the water tank in parallel and at intervals along the direction vertical to the connecting line of the feed port and the discharge port, the plurality of horn rolls are arranged in the same horizontal plane, and the water level in the water tank is higher than the axial lead of the horn rolls; the bottom of the water tank is provided with an automatic sewage discharging system capable of discharging impurities.
In a preferred embodiment of the present invention, a spraying nozzle is disposed above the feed inlet of the roller-type grass washing machine.
In a preferred embodiment of the present invention, a baffle plate for facilitating the output of the grass pieces is disposed between the lower portion of the discharge port of the roller-type grass washing machine and the bottom of the water tank.
In a preferred embodiment of the present invention, the material preparation apparatus further comprises a first belt conveyor for feeding the grass raw material into the straw cutter and a grass carrier for conveying the grass raw material from the material preparation yard to the first belt conveyor; a second belt conveyor is arranged between the straw cutter and the roller type straw washer; a spiral dewatering machine which is obliquely arranged is arranged between the roller type grass washing machine and the spiral grass extruding machine; a third belt conveyor is arranged between the spiral straw extruder and the intermittent cooking device.
In a preferred embodiment of the present invention, an iron attracting device is disposed above the belt of the second belt conveyor; the upper portion and the bottom of the front end of the spiral dehydrator are respectively provided with a feed inlet and a water outlet, and the bottom of the rear end of the spiral dehydrator is provided with a discharge outlet.
The purpose of the utility model can be realized by that the roller type grass washing machine comprises a water tank filled with water, the bottom of the water tank is in a conical shape, the two ends of the water tank are respectively provided with a feed port and a discharge port, the upper part of the water tank is sequentially parallel and provided with a plurality of horn rolls at intervals along the vertical direction of the connecting line of the feed port and the discharge port, and the plurality of horn rolls are arranged in the same horizontal plane; the bottom of the water tank is provided with an automatic sewage discharging system capable of discharging impurities.
In a preferred embodiment of the present invention, a spraying nozzle is disposed above the feed inlet of the roller-type grass washing machine.
In a preferred embodiment of the present invention, a baffle plate for facilitating the output of the grass pieces is disposed between the lower portion of the discharge port of the roller-type grass washing machine and the bottom of the water tank.
Because the utility model utilizes the roller type grass washing machine to wash off the dust on the surface of the grass pieces and remove a large amount of dust, sand and stone and heavy impurities contained in the grass pieces, the method can effectively remove various impurities in the grass raw materials to keep higher raw material cleanliness, stabilize and improve the quality of paper pulp and improve the operation environment of a factory; the equipment is reasonable in configuration, stable in operation, good in pulp forming quality and simple in operation.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein,
FIG. 1: is a flow chart of the wet material preparation method of the grass fiber raw material of the utility model.
FIG. 2: is the structure schematic diagram of the wet feed preparation equipment of the grass fiber raw material of the utility model.
FIG. 3: is the structure schematic diagram of the middle roller type grass washing machine of the utility model.
FIG. 4: is a schematic top view of fig. 3.
FIG. 5: is a side view schematic of fig. 3.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses a method for preparing material of grass fiber raw material by wet method, which is used for intermittent cooking of grass fiber raw material, and comprises the following steps:
(1) conveying the grass raw materials in the stock yard to a first belt conveyor through a grass conveying vehicle, and then conveying the grass raw materials to a grass cutter through the first belt conveyor;
(2) the grass pieces cut by the grass cutter are sent into a roller type grass washer through a second belt conveyor, and the grass pieces are washed by water to remove impurities in the grass pieces; the cleaned grass sheets are output to a spiral dehydrator by a roller type grass washing machine to remove partial water;
(3) the cleaned grass sheets are sent to a spiral grass extruding machine by the spiral dewatering machine, and water in the grass sheets is extruded by the spiral grass extruding machine so as to improve the dryness of the grass sheets;
(4) feeding the grass pieces with certain dryness output from the spiral grass extruder into an intermittent cooking device.
From the foregoing, the utility model discloses an among the wet process feed preparation method of grass fibre raw materials, owing to utilize the roller-type grass washer to wash away the dust on grass piece surface to detach a large amount of dust, grit and heavy impurity that contain in the grass piece, consequently, various impurity in the grass raw materials can effectively be got rid of in order to keep higher raw materials cleanliness factor to this method, stabilize and improve the quality of paper pulp, improve mill's operational environment. The equipment is reasonable in configuration, stable in operation, good in pulp forming quality and simple in operation. The method is especially suitable for the grass fiber raw materials such as straws, wheat straws, reeds and the like with poor drainability, soft materials and small bulk weight.
Further, as shown in fig. 2, the utility model provides a realize the equipment of prepareeing material of above-mentioned grass fiber raw materials's wet process method of prepareeing material, this equipment of prepareeing material is including the fortune grass car 1, first band conveyer 2, the hay cutter 3, second band conveyer 4, roll-type grass washer 5, spiral dewaterer 6, crowded grass machine 7 of spiral, third band conveyer 8 and the intermittent type boiling device 9 that set gradually.
In the present embodiment, an iron sucker (not shown) is disposed above the belt of the second belt conveyor 4, and the iron sucker is used to remove iron impurities in the grass sheet, so as to prevent damage to the roller-type grass washing machine and facilitate cleaning of the grass sheet.
The upper part and the bottom of the front end of the spiral dehydrator 6 are respectively provided with a feed inlet 61 and a water outlet 62, and the bottom of the rear end of the spiral dehydrator 6 is provided with a discharge outlet 63. The inside of the spiral grass extruder 7 is provided with an extrusion reducing spiral which is encapsulated by a cylindrical shell, the upper part of the front end and the lower part of the rear end of the spiral grass extruder 7 are respectively provided with a feed inlet 71 and a discharge outlet 73, and the middle bottom of the spiral grass extruder 7 is provided with a water outlet 72.
In the present embodiment, the other structures of the grass carriage 1, the first belt conveyor 2, the grass cutter 3, the second belt conveyor 4, the spiral dewaterer 6, the spiral grass extruder 7, the third belt conveyor 8 and the intermittent cooking device 9 are substantially the same as the conventional structures, and are not described herein again.
It should be noted that, as shown in fig. 3, 4 and 5, the roller-type grass washing machine 5 of the present embodiment includes a water tank 51 filled with water, the bottom of the water tank 51 is tapered to facilitate the deposition of impurities, the water tank 51 can be supported by a support (not shown) to be stably placed, two ends of the water tank 51 are respectively provided with a feeding port 52 and a discharging port 53, the upper portion of the water tank 51 is sequentially provided with a plurality of horn rolls 54 in parallel and at intervals along a direction perpendicular to a line connecting the feeding port and the discharging port, the plurality of horn rolls 54 are arranged in the same horizontal plane, and the plurality of horn rolls 54 are driven by a transmission device 59 and rotate in the same direction; in the embodiment, six claw rolls 54 are arranged in the roller type grass washing machine 5, the transmission device is provided with a front group of motors and a rear group of motors, each group of motors drives the three claw rolls to rotate anticlockwise, and the claw rolls are connected through a belt or a speed reducer; the rotational speed of the latter group of motors close to the discharge hole 53 is slightly higher than that of the former group of motors so as to prevent the grass pieces from blocking at the discharge hole 53 (as another embodiment in the embodiment, the rotational speed of each horn roll can be gradually increased from the feed hole to the discharge hole one by one, so that grass blockage is avoided, and the grass washing effect is improved). The water level 58 in the trough 51 is lower than the axis of the horn rolls 54 but higher than the line connecting the bottoms of the horn rolls 54. in this embodiment, the bottom of the trough 51 is provided with an automatic drain system 55 capable of draining impurities.
The utility model provides a grass machine is washed to roll-type 5 makes a round trip to turn grass raw materials under the drive of goat's horn roller, washes the grass for a long time no matter big stone. And dust between the grass leaves can be effectively removed.
Further, in the present embodiment, the center-to-center distance between the horn rolls 54 is 850 to 900 mm; the shortest horizontal distance between the claw roller 54 adjacent to the discharge port 53 and the discharge port 53 is 100-200 mm; the lower side of the discharge hole 53 is 100-200 mm higher than the water outlet line; a baffle plate 56 convenient for grass sheet output is obliquely arranged between the lower part of a discharge port 53 of the roller type grass washing machine and the bottom of the water tank 51, and the shortest distance between the horn of the last horn roll 54 and the baffle plate 56 is 100-200 mm.
In the present embodiment, as shown in fig. 3, a spray nozzle 57 is provided above the feed inlet 52 of the roller-type grass washing machine, and mainly functions to prevent dust from flying out, so as to ensure clean environment in the operation site.
The grass washing process of the roller type grass washing machine is as follows: the grass pieces cut into certain sizes by the grass cutter 3 fall into the feed inlet 52 of the roller grass washer 5 from the tail end of the second belt conveyor 4 under the action of gravity, and the water level in the water tank 51 is controlled by an overflow device (not shown in the figure); the grass pieces enter the water under the action of the claw roller 54 and move forward from the position below the water surface along with the rotation of the claw roller 54; the distance between the two claw rollers 54 must be controlled in the structure of the roller-type grass washing machine, so that the grass sheets are prevented from turning upwards along with the rotation of the claw rollers 54, the grass sheets are transmitted to the next claw roller 54 as much as possible, and the grass washing efficiency is improved. After the grass sheet passes through the last claw roller 54, the grass sheet is pushed to the discharge hole 53 of the roller type grass washing machine 5 by the claw roller 54, and the position of the discharge hole 53 is higher than the water level by a certain height, so that the moisture in the grass sheet is favorably filtered out, the moisture cannot flow out of the discharge hole 53 of the roller type grass washing machine 5 along with the grass sheet, and the moisture is remained in the water tank 51 as much as possible, so that the water after impurities are discharged is favorably recycled.
As shown in fig. 2, the grass sheets washed by the roller type grass washer 5 further remove a part of water on the inclined spiral dehydrator 6, and extrude the water in the spiral grass extruder 7, so that the dryness of the grass sheets is improved to 40% -50%, and the volume weight of the grass sheets is also improved, thereby further improving the pot loading amount of the subsequent steps and improving the production efficiency; in addition, the spiral grass extruder 7 generates a certain shearing force to the grass sheets, so that the grass sheets are torn to a certain degree, the digestion liquid medicine is favorable for fully soaking the grass sheets, the pulping quality can be improved, and the digestion time can be shortened.
Further, in this embodiment, the automatic sewage system 55 is vertically disposed at the lowest position of the tapered bottom of the sink, and the automatic sewage system 55 is composed of a heavy impurity collector 551, an upper automatic sewage valve 552 and a lower automatic sewage valve 553 disposed at a distance along the direction of the heavy impurity collector, a flushing water pipe 554 and a slag discharge pipe 555; this automatic blowdown system 55 has PLC controller (not shown in the figure) by itself, under normal operating conditions, top automatic blowdown valve 552 is in the open mode, below automatic blowdown valve 553 is in the closed mode, the impurity that deposits in basin 51 falls into the heavy impurities collector between two valves gradually, when the impurity in heavy impurities collector 551 reaches a certain amount, PLC controller is automatic to close top automatic blowdown valve 552, and open below automatic blowdown valve 553, wash pipe 554 washes downwards (wash pipe also can wash upwards, with special circumstances such as impurity jam blowdown system such as handling grass dust), arrange the sediment, close lower valve after finishing discharging again, open upper valve, continue to carry out grass piece washing and impurity precipitation work.
Because the automatic sewage discharging system 55 is adopted in the roller type grass washing machine 5 of the utility model, the slag discharging operation can be carried out regularly, the water in the water tank 51 can not be discharged during slag discharging, and the water after sedimentation and slag discharging can still be reused; in addition, only a small amount of water needs to be supplemented in the operation process of the roller type grass washing machine 5, and the supplemented water can utilize the papermaking white water or the treated reclaimed water without using clear water, so that a large amount of water resources can be saved.
The grass washing water can also be treated by the following steps: pumping the grass washing water to an additionally built sedimentation tank for sedimentation, screening by using an inclined screen before sedimentation to remove large-size impurities such as grass fragments and powder, and the like, wherein the settled grass washing water can be recycled, and part of lost water can be supplemented by using treated reclaimed water.
The utility model provides a preparation equipment has reasonable in design, operation stability, easy operation's advantage, and because most impurity has been washd by roller-type grass washing machine 5, so alkali lye consumption is less in the processing technology in-process, because the moisture in the grass piece is extruded by spiral grass extruding machine, can improve the pot filling volume, shortens the time of cooking, improves into thick liquid quality, easily black liquid is retrieved.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.
Claims (8)
1. The utility model provides a grass fiber raw materials's wet process equipment of prepareeing material which characterized in that: the material preparation equipment is sequentially provided with a straw cutter, a roller type straw washer, a spiral straw extruder and an intermittent cooking device; the roller type grass washing machine comprises a water tank filled with water, the bottom of the water tank is in a conical shape, a feed port and a discharge port are respectively arranged at two ends of the water tank, the upper part of the water tank is sequentially parallel to the vertical direction of a connecting line of the feed port and the discharge port at intervals and is provided with a plurality of horn rolls, and the plurality of horn rolls are arranged in the same horizontal plane; the bottom of the water tank is provided with an automatic sewage discharging system capable of discharging impurities.
2. The apparatus for wet preparation of grass fibre raw material as claimed in claim 1, characterized in that: and a spraying water gap is arranged above the feed inlet of the roller type grass washing machine.
3. The apparatus for wet preparation of grass fibre raw material as claimed in claim 1, characterized in that: a baffle convenient for the output of the grass sheets is obliquely arranged between the lower part of the discharge port of the roller type grass washing machine and the bottom of the water tank.
4. The apparatus for wet preparation of grass fibre raw material as claimed in claim 1, characterized in that: the material preparation equipment also comprises a first belt conveyor for conveying the grass raw materials into the grass cutter and a grass conveying vehicle for conveying the grass raw materials from the material preparation field to the first belt conveyor; a second belt conveyor is arranged between the straw cutter and the roller type straw washer; a spiral dewatering machine which is obliquely arranged is arranged between the roller type grass washing machine and the spiral grass extruding machine; a third belt conveyor is arranged between the spiral straw extruder and the intermittent cooking device.
5. The apparatus for wet preparation of grass fibre raw material as claimed in claim 4, characterized in that: an iron sucker is arranged above the belt of the second belt conveyor; the upper portion and the bottom of the front end of the spiral dehydrator are respectively provided with a feed inlet and a water outlet, and the bottom of the rear end of the spiral dehydrator is provided with a discharge outlet.
6. A roller type grass washing machine is characterized in that: the roller type grass washing machine comprises a water tank filled with water, the bottom of the water tank is in a conical shape, a feed port and a discharge port are respectively arranged at two ends of the water tank, the upper part of the water tank is sequentially parallel to the vertical direction of a connecting line of the feed port and the discharge port at intervals and is provided with a plurality of horn rolls, and the plurality of horn rolls are arranged in the same horizontal plane; the bottom of the water tank is provided with an automatic sewage discharging system capable of discharging impurities.
7. A roller lawnmower according to claim 6, wherein: and a spraying water gap is arranged above the feed inlet of the roller type grass washing machine.
8. A roller lawnmower according to claim 6, wherein: a baffle convenient for the output of the grass sheets is obliquely arranged between the lower part of the discharge port of the roller type grass washing machine and the bottom of the water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201729649U CN201485749U (en) | 2009-08-19 | 2009-08-19 | Wet process feed preparation equipment for grass fiber raw materials and roller type grass washing machine thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201729649U CN201485749U (en) | 2009-08-19 | 2009-08-19 | Wet process feed preparation equipment for grass fiber raw materials and roller type grass washing machine thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201485749U true CN201485749U (en) | 2010-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201729649U Expired - Lifetime CN201485749U (en) | 2009-08-19 | 2009-08-19 | Wet process feed preparation equipment for grass fiber raw materials and roller type grass washing machine thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201485749U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061177A (en) * | 2011-10-18 | 2013-04-24 | 中国轻工业南宁设计工程有限公司 | Wet feed preparation method and device for bagasse before continuous cooking |
-
2009
- 2009-08-19 CN CN2009201729649U patent/CN201485749U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103061177A (en) * | 2011-10-18 | 2013-04-24 | 中国轻工业南宁设计工程有限公司 | Wet feed preparation method and device for bagasse before continuous cooking |
| CN103061177B (en) * | 2011-10-18 | 2016-01-13 | 中国轻工业南宁设计工程有限公司 | The method and apparatus of the wet feed preparation before bagasse continuously cooking |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100526 Effective date of abandoning: 20090819 |