CN204247606U - A kind of grass washing machine with outlet sieve - Google Patents

Abstract

The utility model belongs to the technical field of papermaking equipment, in particular to a grass washing machine with an outlet sieve, comprising a water tank, the bottom of which is connected with a sewage pipe, one side of the water tank is provided with a feed port, and the opposite side is provided with an outlet. The feed port and the discharge port are connected with a sieve body that is inclined. The end of the screen body connected to the discharge port is the feed end, and the end far away from the discharge port is the discharge end. The discharge end is set close to the water tank. The sieve is installed at a slant, the material channel is formed between the top of the sieve body and the sieve, the material channel is connected to the discharge port, there is a gap between the sieve and the bottom of the sieve to form a water storage cavity, and the bottom of the water storage cavity is provided with drainage Tube. The utility model has a large washing space, smooth feeding and discharging, and further cleans and removes impurities from the materials output from the discharge port, and the materials are cleaned, and has simple structure, low cost and convenient maintenance.

Description

A grass washing machine with an outlet sieve

technical field

The utility model belongs to the technical field of papermaking equipment, in particular to a grass washer with an outlet screen.

Background technique

At present, papermaking is mainly divided into wood pulp papermaking and straw pulp papermaking. Wood pulp papermaking has a long history and mature technology. Because wood pulp papermaking uses forest trees as raw materials, and the forest coverage rate in China is low, the cost of wood pulp papermaking is relatively high. And have a certain impact on the environment. With the advancement of papermaking technology, straw pulp papermaking technology has been greatly developed. Using wool grass, cotton stalks, reeds, corn stalks, straw and other grasses as pulping raw materials does not need to consume forest resources. As a big agricultural country, our country is rich in crop stalks. Some of these crop stalks are crushed and returned to the field, some are discarded and wasteful, and many are incinerated, which wastes resources and pollutes the environment. Therefore, the development of straw pulp papermaking can not only achieve full resources Utilize, avoid waste, and can protect environment, have important social significance and economic benefit.

However, as far as the current research situation is concerned, there are mainly the following types of straw pulp papermaking.

1. In the document "Using Biotechnology, Straw Pulping and Papermaking Creates a New Era of Straw Pulp Green Papermaking", a method of using straw to make pulp and paper is provided, using a grass cutter to cut the straw, and then using a claw dust collector to clean the cut material. After dedusting, the material after dedusting is subjected to cooking pulping and pulping extraction successively. During the cooking process, 5.5m ³ of black liquor is produced per ton of dry grass, and the COD content in the black liquor after pulping is 40000mg/L, which is equivalent to The content of organic matter is about 220kg. Although it is proposed to use biotechnology to treat black liquor in the literature, it is not difficult to find that this method of cooking straw to process plant stalks results in a large amount of black liquor and is difficult to handle.

2. In the document "Research on the Application of Corn Stalks in the Pulp and Paper Industry", a method of pulping corn stalks with caustic soda-anthraquinone is provided, and the crushed and sieved corn stalks are treated with caustic soda under certain conditions. After extraction, chlorine bleaching is carried out, and after chlorine bleaching, alkaline hydrogen peroxide is used for treatment. It can be seen that this method mainly uses chemical reagents to treat straw. It is not difficult to imagine that the later wastewater treatment is very complicated, and The use of chlorinated bleaching will produce toxic organic chlorides, which is difficult to apply to large-scale production.

In the long-term practice in this field, the inventor has determined a new process after a lot of repeated experiments, which saves the cooking steps, combines the grinding and bleaching stages into one, simplifies the process, and realizes rapid low-temperature softening at the same time. The COD and chroma of the generated wastewater are greatly reduced, the pollution load is greatly reduced, and all the wastewater can be reused.

In the new process, in order to facilitate the pulping of raw materials in the paper industry, especially the pulping of raw materials, the above-mentioned raw materials need to be crushed before production, and then the crushed raw materials are cleaned, softened, kept warm, kneaded, reacted, and ground. , pulping, pulp washing, dehydration, pulp storage and other steps, especially the cleaning of raw materials is to remove impurities such as sediment and dust in the crushed papermaking materials, which directly affects the progress of subsequent links and the quality of pulp. It plays a very important role, and it is particularly critical to choose a washing device suitable for raw material cleaning.

Most of the washing devices currently in use are equipped with a water tank with a feed inlet and a discharge outlet. The papermaking raw materials that have been treated to a certain extent enter the water tank through the feed inlet and then are discharged from the discharge outlet. The mud mixed in the papermaking raw materials Impurities such as sand and dust settle to the bottom of the water tank due to their higher specific gravity than water. There is a sewage pipe at the bottom of the water tank, and a filter is installed at the bottom of the water tank. When the switch of the sewage pipe is turned on, impurities such as sand and dust are filtered through The net is discharged with the sewage. For wood pulp and papermaking, because the raw materials of wood pulp and papermaking are first processed into small wood chips, small wood chips are generally the size of a matchbox, 3-5mm thick, contain less impurities, and the effect of cleaning and removing impurities is very good. But for straw pulp papermaking, because the raw materials of straw pulp papermaking are loose and messy, large in size, contain many impurities such as silt and dust, the effect of cleaning and removing impurities is not ideal, and the materials output from the outlet of the grass washing machine are still Some impurities are mixed, so it directly enters the next processing link, which affects the quality of papermaking.

Therefore, for the straw pulping process developed by the utility model, it is necessary to design a specific washing device to meet the needs of the process.

Utility model content

The purpose of the utility model is to provide a grass washing machine, which aims to solve the problem that the raw materials for pulp and papermaking are loose and messy, large in size, contain many impurities such as silt, dust, etc., and the effect of cleaning and removing impurities is not good. The material output from the discharge port into the next processing link is still mixed with some impurities, which affects the technical problem of papermaking quality.

The utility model is realized in this way. A grass washing machine with an outlet sieve includes a water tank. The bottom of the water tank is connected with a sewage pipe. One side of the water tank is provided with a feed port, and the opposite side is provided with a A discharge port, the discharge port is connected with an obliquely arranged sieve body, the end of the sieve body connected to the discharge port is the feed end, and the end far away from the discharge port is the discharge end, the The discharge end is set close to the water tank, and the screen is installed with an inclined screen. A material passage is formed between the top of the screen and the screen. The material passage is connected to the discharge port. The screen and the screen are connected to each other. A gap is left between the bottoms of the sieve bodies to form a water storage chamber, and a drainage pipe is arranged at the bottom of the water storage chamber.

As an improvement, several spray pipes are provided on the top of the screen body, and several spray holes are arranged on each spray pipe, and several spray holes located on the same spray pipe are arranged in a straight line. toward the screen.

As a further improvement, the axial direction of the spray pipe is perpendicular to the material flow direction, one end of the spray pipe is fixed on one side wall of the sieve body, and the other end is fixed on the other side wall of the sieve body.

As an improvement, the width of the feed end of the sieve body is greater than the width of the discharge end, the longitudinal section of the material channel is an inverted trapezoid with a large upper part and a smaller lower part, and the screen mesh matches the shape of the sieve body and is locked. Combined in the sieve body, the two sides of the sieve are against the sieve body.

As a further improvement, a number of cross bars are provided on both sides of the screen in the screen body, and several of the cross bars are against the screen, and the two ends of the cross bars are respectively fixed on the sides of the material channel. on the side wall of the sieve body.

As an improvement, an auxiliary blanking plate is provided at the top of the sieve body close to the discharge port. The width of the side part is larger than the width of the folded part close to the discharge port, and the folded part is fixedly connected with the screen body.

As a further improvement, more than two turning rollers are arranged between the inlet and the outlet in the water tank, and the turning rollers rotate in the same direction. A shift fork extending radially along the rotating roller, a number of water spray ports facing the inside of the water tank are provided on the wall of the water tank below the feed port, and there are respectively provided on both sides of the water tank wall There are sprinklers.

As an improvement, several grooves are provided on the peripheral surface of the rotating roller along the circumferential direction, the shift forks are arranged in the grooves spaced apart from each other, and the shift forks in the grooves spaced apart from each other are arranged in a staggered manner, and the shift forks include The first paddle and the second paddle vertically connected together, the heights of the first paddle and the second paddle are equal, and the extension direction of the paddle plane of the first paddle is in line with the axis of the rotating roller The directions intersect each other at an acute angle, and the first paddles of the adjacent shift forks in the same groove are arranged symmetrically with respect to the axial direction of the rotating roller.

As an improvement, an inspection port is provided on the top of the water tank above the rotating roller and above the discharge port, and an upwardly extending convex edge is provided around the inspection port, and the convex edge is covered with a cover body.

As an improvement, the bottom of the water tank is tapered to form a conical groove bottom, the bottom end of the conical groove bottom is detachably installed with a disassembly part, and a The sieve plate, the bottom end of the dismounting part is connected with the sewage discharge pipe, and the sewage discharge pipe is provided with a sewage discharge valve.

Owing to adopting above-mentioned technical scheme, the beneficial effect of the utility model is:

Since the screen body is inclined and installed with an inclined screen inside, a material channel is formed between the top of the screen body and the screen, and a water storage chamber is formed between the screen and the bottom of the screen body, and the materials cleaned by the grass washing machine pass through. The discharge port of the grass washer enters the material channel of the sieve body. The material discharged from the grass washer contains a lot of water. When the material passes through the screen, the impurities contained in the material flow into the water storage chamber through the screen with the moisture in the material. , and then discharged through the drain pipe at the bottom of the water storage chamber, so that the material is further cleaned, the structure is simple, the cost is low, and it is beneficial to improve the quality of papermaking.

Since there are several spray pipes on the top of the sieve body, and several spray holes facing the screen mesh are arranged on the spray pipes. When in use, the spray pipes spray water towards the materials in the material channel, and the impurities in the materials flow along with the water flow and Through the screen, the impurities in the material are further removed, which is conducive to improving the quality of papermaking. The axial direction of the spray pipe is perpendicular to the flow direction of the material, which is easy to install and has a good spray cleaning effect.

Since the width of the feed end of the sieve body is greater than the width of the discharge end, the longitudinal section of the material channel is an inverted trapezoid with a large upper part and a smaller lower part. The structure is simple, the installation is convenient, and the screen is firmly installed.

Because there are several cross bars on both sides of the screen in the screen body, the cross bars are against the screen, and the two ends of the cross bars are respectively fixed on the side walls of the screen body on both sides of the material passage. The structure is simple, so that the screen is fixed It is firm and can prevent the screen from wrinkling and deforming during the working process.

Since the top of the sieve body is equipped with an auxiliary blanking plate near the discharge port, the two ends of the auxiliary blanking plate are connected to the screen body through the flanges, and the width of the flanges away from the discharge port is larger than that close to the discharge port. The width of the folded edge enables the material to be smoothly discharged from the discharge port without spilling to the outside of the screen body.

Since more than two rotating rollers are set in the water tank, the washing space in the water tank is large, which is beneficial to clean the materials and is not easy to be blocked. There are several water spray ports facing the inside of the water tank on the wall of the water tank below the feeding port. Water spray pipes are arranged on the wall on both sides of the discharge port. The water flow from the water spray port and the water spray pipe acts on the material, which is beneficial to feeding and discharging, prevents clogging, and facilitates the smooth progress of the weeding process.

Since the circumferential surface of the rotating roller is provided with several grooves in the circumferential direction, and shift forks are arranged in the grooves spaced apart from each other, and the shift forks in the grooves spaced apart from each other are arranged in a staggered manner, the adjacent shift forks in the same groove are relatively rotating The axially symmetrical arrangement of the rollers is conducive to mixing and conveying materials, and at the same time prevents the materials from being entangled on the shift fork as much as possible. The peripheral length of the shift fork is enlarged so that the shift fork is not easy to be entangled by the material, and the extension direction of the shift plane of the first shift plate intersects with the axial direction of the rotating roller at an acute angle, which is beneficial to stirring and conveying the material.

Since the top of the water tank above the rotating roller and the top of the discharge port are equipped with inspection ports, it is very easy to operate when the water tank is blocked or there is a problem that needs troubleshooting or maintenance, and the cover is closed on the inspection port, which can be opened and closed. Very convenient.

Since the bottom of the tank is tapered to form a conical tank bottom, it prevents impurities from depositing on the tank wall, making it easy for impurities to settle to the bottom of the tank. When the sewage pipe discharges sewage, the impurities are discharged together with the sewage. The bottom of the conical tank bottom can be disassembled and installed There is a disassembly part, and a sieve plate is installed between the disassembly part and the bottom of the conical groove. When the sieve plate is blocked or needs to be repaired and replaced, the disassembly part can be removed to repair or replace the sieve plate. The operation is simple, safe and fast.

Description of drawings

Fig. 1 is the structural representation of present embodiment;

Fig. 2 is the front view of sieve body in the present embodiment;

Fig. 3 is a sectional view along B-B direction in Fig. 2;

Fig. 4 is the structural representation of spray pipe;

Fig. 5 is a sectional view along A-A direction in Fig. 1;

Fig. 6 is a schematic structural view of the rotating roller in another arrangement of the shift fork;

Fig. 7 is a schematic structural view of the flange;

Fig. 8 is a structural schematic diagram of a fixed edge;

Among them, 1-sink, 2-sewage pipe, 3-inlet, 4-outlet, 5-screen body, 6-screen, 7-material channel, 8-water storage chamber, 9-drainage pipe, 10 -spray pipe, 101-spray hole, 11-cross bar, 12-auxiliary blanking plate, 121-folding part, 13-rotating roller, 14-shift fork, 141-first paddle, 142-second Pick, 15-spout, 16-spray pipe, 17-groove, 18-cover, 19-conical groove bottom, 20-disassembly, 21-sieve plate, 22-drainage valve, 23- Flange, 24-bolt, 25-fixed edge.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figures 1 to 8, a grass washing machine with an outlet sieve includes a water tank 1, the bottom of the water tank 1 is connected with a sewage pipe 2, one side of the water tank 1 is provided with a feed port 3, and the other side is opposite. There is a discharge port 4 on the side, and the discharge port 4 is connected with a sieve body 5 arranged obliquely. The material end is set close to the water tank 1, and the sieve body 5 is installed with a slanted screen 6. A material channel 7 is formed between the top of the sieve body 5 and the screen 6, and the material channel 7 is connected to the discharge port 4. The screen 6 and the sieve A gap is left between the bottoms of the body 5 to form a water storage chamber 8, and a drain pipe 9 is provided at the bottom of the water storage chamber 8.

In this embodiment, the top of the sieve body 5 is provided with several spray pipes 10, and each spray pipe 10 is provided with several spray holes 101, and the several spray holes 101 on the same spray pipe 10 are arranged in a straight line. Towards the screen 6, specifically, the axial direction of the spray pipe 10 is perpendicular to the material flow direction, one end of the spray pipe 10 is fixed on the side wall of the screen body 5, and the other end is fixed on the other side of the screen body 5 on the wall.

In this embodiment, the width of the feed end of the sieve body 5 is greater than the width of the discharge end, and the longitudinal section of the material channel 7 is an inverted trapezoid with a large upper part and a smaller lower part. 5, the two sides of the screen 6 are against the sieve body 5.

In order to better fix and install the screen cloth 6, some cross bars 11 are arranged on both sides of the screen cloth 6 in the screen body 5, and some cross bars 11 are all against the screen cloth 6, and the two ends of the cross bar 11 are respectively fixed on the screen cloth 6. On the side walls of the sieve body 5 on both sides of the material passage 7.

In this embodiment, in order to prevent the materials in the sieve body 5 from spilling, an auxiliary blanking plate 12 is provided at the top of the sieve body 5 close to the discharge port 4, and the two ends of the auxiliary blanking plate 12 are folded toward the sieve body 5 to form folds. The width of the edge portion 121 away from the discharge port 4 is greater than that of the flange portion 121 close to the discharge port 4 , and the flange portion 121 is fixedly connected with the sieve body 5 .

In this embodiment, more than two turning rollers 13 are arranged between the feeding port 3 and the discharging port 4 in the water tank 1, and the turning rollers 13 rotate in the same direction. 13 Radially extending shift fork 14.

In order to make feeding and discharging more smooth, the tank wall of the tank 1 is located below the feed port 3 and is provided with a number of water spouts 15 towards the inside of the tank 1, and the tank wall of the tank 1 is located on both sides of the discharge port 4. There is a water spray pipe 16, specifically, the water spray pipe 16 passes through the tank wall of the water tank 1 and extends, and the extension direction of the water spray pipe 16 intersects the discharge direction of the discharge port 4 at an acute angle, preferably, the intersection angle α is 30° °～60 °, when the extension direction of the water spray pipe 16 intersects with the discharge direction of the discharge port 4 at an angle α of 45°, the effect is the best.

In this embodiment, a plurality of grooves 17 are arranged on the peripheral surface of the rotating roller 13 along the circumferential direction, and shift forks 14 are arranged in the grooves 17 spaced apart from each other, and the shift forks 14 in the grooves 17 spaced apart from each other are arranged in a staggered manner, and the shift forks 14 Including the first plectrum 141 and the second plectrum 142 that are vertically connected together, the heights of the first plectrum 141 and the second plectrum 142 are equal, the extending direction of the plectrum plane of the first plectrum 141 is the same as that of the rotating roller 13 The axial directions intersect at an acute angle, and the first paddles 141 of adjacent shift forks 14 in the same groove 17 are arranged symmetrically with respect to the axial direction of the rotating roller 13. Specifically, as shown in Figures 5 and 6, the second paddles 142 may be arranged symmetrically or asymmetrically with respect to the axial direction of the rotating roller 13 .

In this embodiment, in order to facilitate maintenance, an inspection port is provided on the top of the water tank 1 above the rotating roller 13 and above the discharge port 4, and an upwardly extending convex edge is provided around the inspection port, and the convex edge is covered with a cover. Body 18, especially when feeding port 4 and discharge port 5 blockage or turning roller 13 when needing troubleshooting or maintenance, open cover body 18 and carry out troubleshooting or maintenance through inspection port, very convenient.

In this embodiment, the bottom of the water tank 1 is tapered to form a conical groove bottom 19, the bottom end of the conical groove bottom 19 is detachably installed with a disassembly part 20, and a disassembly part 20 and the conical groove bottom 19 are installed The sieve plate 21 and the bottom end of the dismounting part 20 are connected with the sewage pipe 2, and the sewage pipe 2 is provided with a sewage valve 22. In specific applications, the dismounting part 20 and the tapered groove bottom 19 can pass through the flange plate 23 and bolts. 24 connection, the sieve plate 21 is installed between the two flanges 23, of course, the fixing edge 25 extending in the circumferential direction can also be set on the dismounting part 20 and the tapered groove bottom 19 respectively, and the two fixing edges 25 are fixed by bolts 24 , the sieve plate 21 is installed between the two fixed edges 25, for the convenience of installation, an installation groove can also be provided on the fixed edge 25 and the flange plate 23, and the size of the installation groove is specifically set so that the sieve plate 21 is placed in the installation groove It offsets against the bottom of the tapered groove bottom 19, and does not require additional fixing structures to fix the sieve plate 21. The structure is simple and the fixing effect is good.

In the grass washing machine provided by the utility model with an outlet sieve, the material is output from the discharge port 4 and enters the sieve body 5, and a large amount of water contained in the material and the water sprayed by the spray pipe 10 flow out through the screen 6 and are taken away at the same time. The impurities in the material can further clean and remove impurities. The structure is simple, the cost is low, and the effect of removing impurities is good, which is conducive to improving the quality of papermaking. There are multiple rotating rollers 13 in the water tank 1, so that the washing in the water tank 1 The space is large, which is beneficial for cleaning the materials. The rotating roller 13 is equipped with a shift fork 14, which has a firm structure, good effect of mixing and conveying materials, and can prevent the materials from winding around the shift fork 14, and is equipped with a water spray port 15 and a water spray pipe 16, so that The feeding and discharging are smooth, and the top of the water tank 1 and the top of the discharge port 4 are equipped with inspection ports, which are very convenient for maintenance and troubleshooting. Sieve plate 21 is installed between 19, and structure is simple and practical, and sieve plate 21 maintenance and replacement are very convenient.

The inventor has spent a lot of time and energy on the grass washer with outlet sieve provided by the utility model. After a lot of experiments and a lot of creative labor, the inventor finally researched and found that the efficiency of material cleaning and impurity removal in the straw pulp papermaking process The quality and quality are very good, meeting the production needs of the new papermaking process, and the structure is compact, easy to use and maintain, small footprint, saving plant space, conducive to the installation of the entire production line, and the water consumption is small, which is conducive to saving water resources .

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (10)

1. A grass washing machine with an outlet sieve, comprising a water tank, the bottom of the water tank is connected with a sewage pipe, one side of the water tank is provided with a feed port, and the opposite side is provided with a discharge port, its characteristics That is, the discharge port is connected with a sieve body arranged obliquely, the end of the sieve body connected to the discharge port is the feed end, and the end far away from the discharge port is the discharge end, and the discharge port is The end is set close to the water tank, and the sieve body is equipped with a slanted screen. A material channel is formed between the top of the sieve body and the screen. The material channel is connected to the discharge port. The screen and the sieve body A gap is left between the bottoms to form a water storage chamber, and a drain pipe is arranged at the bottom of the water storage chamber. 2. The grass washing machine with outlet sieve according to claim 1, characterized in that, the top of the sieve body is provided with some spray pipes, and each of the spray pipes is provided with some spray holes, located at Several spray holes on the same spray pipe are arranged in a straight line and all face the screen. 3. The grass washing machine with an outlet screen according to claim 2, wherein the axial direction of the spray pipe is perpendicular to the material flow direction, and one end of the spray pipe is fixed on the side wall of the screen body The other end is fixed on the other side wall of the screen body. 4. The lawn washing machine with outlet sieve according to claim 1, characterized in that, the width of the feed end of the sieve body is greater than the width of the discharge end, and the longitudinal section of the material passage is an inverted one with a large upper part and a smaller lower part. trapezoidal shape, the screen mesh matches the shape of the sieve body and is engaged in the sieve body, and the two sides of the sieve mesh are against the sieve body. 5. The grass washing machine with an outlet sieve according to claim 4, wherein a plurality of cross bars are arranged on both sides of the screen in the sieve body, and a plurality of cross bars are all offset against the screen. , the two ends of the cross bar are respectively fixed on the side walls of the screen body located on both sides of the material channel. 6. The grass washing machine with an outlet sieve according to claim 1, wherein an auxiliary blanking plate is provided at the top of the sieve body close to the discharge port, and the two ends of the auxiliary blanking plate face toward the sieve. The hemming of the body forms a hemming part, the width of the hemming part away from the discharge opening is greater than the width of the hemming part close to the discharge opening, and the hemming part is fixedly connected with the screen body. 7. The lawn washing machine with an outlet screen according to any one of claims 1 to 6, wherein more than two rotating shafts are arranged between the feed inlet and the discharge outlet in the water tank. The rotating rollers rotate in the same direction, and the peripheral surface of the rotating rollers is provided with a number of shift forks extending radially along the rotating rollers. The inner water spray port is provided with water spray pipes on both sides of the discharge port on the tank wall of the water tank. 8. The grass washing machine with outlet screen according to claim 7, characterized in that, the peripheral surface of the rotating roller is provided with several grooves in the circumferential direction, and the shift forks are arranged in the grooves spaced apart from each other. The shifting forks in the spaced grooves are arranged in a staggered manner, the shifting forks include a first dial and a second dial that are vertically connected together, the heights of the first dial and the second dial are equal, and the first The extension direction of the paddle plane of the paddle intersects the axial direction of the rotating roller at an acute angle, and the first paddles adjacent to the shifting fork in the same groove are arranged symmetrically with respect to the axial direction of the rotating roller . 9. The grass washing machine with an outlet screen according to any one of claims 1 to 6, characterized in that, an inspection port is provided on the top of the water tank above the rotating roller and above the discharge port, A protruding edge extending upward is provided around the inspection opening, and a cover body is covered on the protruding edge. 10. The grass washing machine with an outlet screen according to any one of claims 1 to 6, characterized in that, the bottom of the water tank is tapered to form a tapered bottom, and the bottom end of the tapered bottom is A detachable part is detachably installed, and a sieve plate is installed between the detachable part and the bottom of the tapered groove. The bottom end of the detachable part is connected to the sewage pipe, and the sewage pipe is provided with a sewage valve.