CN109440517B

CN109440517B - Drying net cleaning device

Info

Publication number: CN109440517B
Application number: CN201811603748.5A
Authority: CN
Inventors: 许伟良
Original assignee: Wuxi Nanquan Pressure Vessel Co ltd
Current assignee: Wuxi Nanquan Pressure Vessel Co ltd
Priority date: 2018-12-26
Filing date: 2018-12-26
Publication date: 2021-04-30
Anticipated expiration: 2038-12-26
Also published as: CN109440517A

Abstract

The invention belongs to the technical field of papermaking equipment, and relates to a drying net cleaning device which comprises a high-pressure nozzle and a water spray pipe, wherein the high-pressure nozzle and the water spray pipe are positioned above a drying net, the drying net cleaning device also comprises a vacuum adsorption platform arranged below the drying net, the vacuum adsorption platform is arranged in a hollow manner, a plurality of air holes are formed in the platform surface of the vacuum adsorption platform, a suction pipe is arranged on the vacuum adsorption platform, one end of the suction pipe is communicated with a cavity in the vacuum adsorption platform, and the other end of the suction pipe is connected with; the invention has the effects of collecting the sewage after cleaning the dry net and preventing the sewage from splashing on other paper machine parts.

Description

Drying net cleaning device

Technical Field

The invention relates to the technical field of papermaking equipment, in particular to a dry net cleaning device.

Background

In order to improve the physical indexes of paper, more chemical additives are required to be added into the packaging paper produced by the process of recycling and reusing waste paper, part of the chemical additives are adsorbed on fibers after the processes of beating, screening and the like in the pulping process, and after the wet part forming, pressing and dewatering, the rest of the chemical additives are easy to form condensates on the cylinder surface of a drying cylinder in the paper web drying process. The gelled substance falls off from the scraper and adheres to the dry net to form pimple-shaped substances, so that the pimple-shaped substances can cause great harm to paper making of a paper machine if not cleaned in time, particularly low-gram-weight board paper is manufactured, paper breaking is easy to occur at a glue applying position, the paper is easy to explode when being rewound, and the quality of liner paper is difficult to guarantee.

To solve the problem, chinese patent No. CN207862694U discloses a dry net cleaning device, which comprises a dry net of a paper machine and a dry net cleaning device, wherein the dry net cleaning device is arranged at the opposite side of the dry net of the paper machine, the dry net cleaning device comprises a water tank, a water spray pipe, an ultra-high pressure nozzle and a water spray controller, one end of the water spray pipe is connected with the water tank, the other end of the water spray pipe is connected with the ultra-high pressure nozzle, the water spray controller is connected with the ultra-high pressure nozzle, and the ultra-high pressure nozzle is arranged at the side of the dry net of the paper machine.

The above prior art solutions have the following drawbacks: when the high-pressure water pipe is directly used for spraying and washing the dry net, the sewage after the dry net is cleaned can be blown into the inner side of the dry net, and the water mist penetrating through the dry net carries the dirt to easily corrode other parts of the paper machine.

Disclosure of Invention

The invention aims to provide a dry net cleaning device which has the effects of collecting sewage after cleaning a dry net and preventing the sewage from splashing on other paper machine parts.

The technical purpose of the invention is realized by the following technical scheme:

the utility model provides a dry net belt cleaning device, includes high pressure nozzle and spray pipe, high pressure nozzle and spray pipe are located dry net top, still include the vacuum adsorption platform of setting in dry net below, vacuum adsorption platform cavity sets up, has seted up a plurality of gas pockets on the mesa of vacuum adsorption platform, and the vacuum adsorption bench is equipped with the straw, straw one end and the inside cavity intercommunication of vacuum adsorption platform, the other end has connect the air pump.

Through adopting above-mentioned technical scheme, high-pressure nozzle blowout high-speed rivers wash drying the net, and the sewage that pierces through drying the net falls on the vacuum adsorption platform, and the air pump is taken out the inside gas of vacuum adsorption platform this moment, and then forms the negative pressure in gas pocket department, inhales the sewage on the vacuum adsorption platform mesa, then discharges by the straw to can collect the sewage after drying the net with the washing, prevent that it from spattering on other paper machine parts.

The invention is further configured to: be equipped with vapour and liquid separator between straw and the air pump, be equipped with trachea and water pipe on the vapour and liquid separator, trachea, straw and water pipe are arranged from top to bottom in proper order, and the trachea links to each other with the air pump dorsad vapour and liquid separator one end.

Through adopting above-mentioned technical scheme, sewage and air mix together, enter gas-liquid separator by the straw, and sewage subsides in gas-liquid separator to discharge from the lower water pipe of height, gaseous then discharge from the higher trachea of height, prevent that sewage from getting into the air pump.

The invention is further configured to: and a first back-flushing pipe is arranged in the gas-liquid separator, is positioned below the air pipe and is positioned above the suction pipe.

Through adopting above-mentioned technical scheme, set up first recoil straw, regularly wash the impurity of adhesion on the vapour and liquid separator inner wall, avoid on the vapour and liquid separator inner wall dirt accumulation excessive back with the water pipe mouth of pipe jam.

The invention is further configured to: the table top of the vacuum adsorption table is provided with a scraper and a cylinder for driving the scraper to move, and one end of the vacuum adsorption table is provided with a slag collecting groove.

Through adopting above-mentioned technical scheme, sewage flows and flows on the mesa of vacuum adsorption platform before the gas pocket, has partial impurity to remain on the mesa of vacuum adsorption platform at this in-process to gather into the dirt, set up the dirt that the scraper blade can regularly clear up on the vacuum adsorption platform mesa, scrape into the sediment groove with it in, prevent that the dirt from blockking up the gas pocket.

The invention is further configured to: the vacuum adsorption table is characterized in that two groups of sliding rails are arranged on the table top of the vacuum adsorption table, the sliding rails are perpendicular to the scraper plates, sliding blocks are arranged on the sliding rails in a sliding mode, two ends of each scraper plate are connected with the two sliding blocks respectively, and a piston rod of the air cylinder is connected with one of the sliding blocks.

Through adopting above-mentioned technical scheme, set up slider and slide rail cooperation, lead to the scraper blade, make the scraper blade can be steadily scraped on the mesa of vacuum adsorption platform.

The invention is further configured to: the air hole is a conical hole, and the inner diameter of the top end of the air hole is smaller than that of the bottom end of the air hole.

By adopting the technical scheme, the bottom ends of the air holes are expanded outwards, so long as sewage can smoothly flow into the air holes, the air holes are not easy to block, and the air holes are kept smooth.

The invention is further configured to: and a second back flushing pipe is arranged in the vacuum adsorption platform.

Through adopting above-mentioned technical scheme, set up the second recoil straw, regularly wash the impurity of adhesion on the vacuum adsorption platform inner wall, avoid the dirt accumulation on the vacuum adsorption platform inner wall too much after with the straw mouth of pipe jam.

The invention is further configured to: the cavity in the vacuum adsorption platform is funnel-shaped, and the bottom end of the cavity is connected with the suction pipe.

Through adopting above-mentioned technical scheme, the bottom of vacuum adsorption platform sets up to the funnel type, is favorable to sewage to assemble in its inside, then flows in the straw that links to each other with vacuum adsorption platform bottom, avoids vacuum adsorption platform inner wall bottom surface to appear ponding.

In conclusion, the beneficial technical effects of the invention are as follows:

1. the sewage after the cleaning and drying net can be collected and prevented from splashing on other paper machine parts;

2. the gas-liquid separator is arranged, so that sewage can be separated from the gas flow, and the sewage does not pass through the air pump when being discharged, so that the air pump can keep normal operation;

3. through setting up the scraper blade, can regularly scrape the dirt of deposit on the vacuum adsorption platform mesa, prevent that the dirt from blockking up the gas pocket.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural diagram of a table top of a vacuum adsorption table in the embodiment;

FIG. 3 is a schematic view showing the connection between the squeegee and the slider in the embodiment;

FIG. 4 is a schematic view showing an internal structure of a vacuum adsorption stage according to an embodiment;

FIG. 5 is a schematic view showing the connection between the suction tube and the air pump in the embodiment;

FIG. 6 is a schematic structural diagram of a water-absorbing cylinder in the embodiment.

In the figure, 1, a high-pressure nozzle; 2. a water spray pipe; 3. a vacuum adsorption stage; 4. a straw; 5. an air pump; 6. a gas-liquid separator; 7. an air tube; 8. a water pipe; 9. a squeegee; 10. a cylinder; 11. a slag collecting groove; 31. air holes; 32. a slide rail; 33. a slider; 34. a second backwash pipe; 35. a fender; 36. a baffle; 321. a travel switch; 331. a chute; 332. a spring; 333. a limiting groove; 61. a first backwash pipe; 62. a baffle plate; 63. a water suction cylinder; 64. a framework; 65. absorbent cotton; 66. a limiting plate; 91. a limiting block; 92. a through groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the cleaning device for the drying net disclosed by the invention comprises a high-pressure nozzle 1 and a water spray pipe 2 which are arranged above the drying net, a vacuum adsorption platform 3 arranged below the drying net, a suction pipe 4 matched with the vacuum adsorption platform 3, and an air pump 5. The vacuum adsorption table 3 is hollow, and a plurality of air holes 31 are arranged on the table top in an array mode.

Referring to fig. 2, a scraping plate 9, two sliding blocks 33, two sliding rails 32, an air cylinder 10 and a slag collecting groove 11 are arranged on the table top of the vacuum adsorption table 3. Wherein, two slide rails 32 are respectively arranged at two sides of the table top of the vacuum adsorption table 3 and are parallel to the dry net, and the slide block 33 is arranged on the slide rails 32 in a sliding manner. The scraper 9 is perpendicular to the slide rail 32, the lower surface of the scraper is closely attached to the table top, and two ends of the scraper are connected with two sliding blocks 33. The slag collecting groove 11 is fixedly connected on the side wall of one side of the vacuum adsorption platform 3 and is positioned below the dry net. A piston rod of the air cylinder 10 is fixedly connected with one sliding block 33, the sliding block 33 is pushed to move on the sliding rail 32, and then the scraping plate 9 is driven to move towards the slag collecting groove 11.

Referring to fig. 2, a travel switch 321 is disposed on the slide rail 32 where the slide block 33 connected to the piston rod of the cylinder 10 is located, and the travel switch 321 is located at one end of the slide rail 32 facing away from the cylinder 10. When the air cylinder 10 pushes the scraper 9 to move to the edge of the vacuum adsorption platform 3, the sliding block 33 just abuts against the travel switch 321, at this time, the air delivery in the air cylinder 10 is stopped, and the piston rod of the air cylinder 10 starts to retract.

Referring to fig. 2, the scraper 9 is obliquely arranged and forms an included angle of 60 degrees with the table surface of the vacuum adsorption table 3, and the distance between the upper surface of the scraper and the slag collecting groove 11 is smaller than the distance between the lower surface of the scraper and the slag collecting groove 11.

Referring to fig. 2, two fenders 35 are fixedly arranged on the table top of the vacuum adsorption table 3, and the fenders 35 are arranged along the vertical direction, are parallel to the slide rails 32, are respectively located on one side of the two slide rails 32 facing the scraper 9, and are arranged close to the corresponding slide rails 32. The air holes 31 on the vacuum adsorption platform 3 are all positioned between the two mud guards 35.

Referring to fig. 2, two through grooves 92 are formed in the bottom side wall of the scraper 9, and respectively correspond to the two fenders 35, and the width of the through groove 92 is equal to the thickness of the fender 35. When the scraper 9 scrapes on the surface of the vacuum suction table 3, the fender 35 slides in the through groove 92 relative to the scraper 9. The dirt scraped by the scraper 9 is restricted by the two mud guards 35, does not scatter on the two sides of the vacuum adsorption platform 3, and only enters the slag collecting groove 11.

Referring to fig. 2, a flow guide plate 36 is arranged on one side of the vacuum adsorption platform 3 facing the slag collecting groove 11, the cross section of the flow guide plate 36 is U-shaped, one end of the flow guide plate, which faces away from the slag collecting groove 11, is fixedly connected with the two mud guards 35 and the vacuum adsorption platform 3, the flow guide plate is obliquely arranged downwards and gradually furled towards one end of the slag collecting groove 11, and the opening is positioned right above the slag collecting groove 11. Dirt is scraped into the guide plate 36 by the scraper 9 and slides into the slag collecting groove 11 along the guide plate 36 without scattering outside the slag collecting groove 11.

Referring to fig. 3, a sliding groove 331 is formed in one side of the sliding block 33 facing the scraper 9, the sliding groove 331 is arranged in the vertical direction, the bottom end of the sliding groove 331 is communicated with the lower surface of the sliding block 33, and the top end surface of the sliding groove is closed. In addition, a limiting groove 333 is further formed in the side wall of the sliding groove 331, the limiting groove 333 is also arranged in the vertical direction, and the top end and the bottom end of the limiting groove 333 are sealed.

Referring to fig. 3, two ends of the scraper 9 are vertical, and are slidably disposed in the corresponding sliding grooves 331, and a limiting block 91 is fixedly connected to the scraper 9, and the limiting block 91 is slidably disposed in the limiting groove 333 to prevent the scraper 9 from completely sliding out from the bottom end of the sliding grooves 331.

Referring to fig. 3, a spring 332 is disposed between the upper surface of the scraper 9 and the top end surface of the chute 331, and the spring 332 is disposed along the vertical direction and in a compressed state, so as to press the scraper 9 against the top surface of the vacuum adsorption table 3 (see fig. 2).

Referring to fig. 2 and 3, the spring 332 presses the scraper 9 against the top of the vacuum suction table 3, and at this time, the piston rod of the cylinder 10 extends to push the slider 33 connected thereto toward the slag collection groove 11, and the scraper 9 moves along with the slider 33 to scrape off dirt attached to the vacuum suction table 3. When the scraper 9 moves to the edge of the vacuum adsorption platform 3 towards one side of the slag collecting groove 11, dirt is pushed into the guide plate 36 and slides into the slag collecting groove 11 along the guide plate 36. At this time, the slider 33 abuts on the stroke switch 321, and the piston rod of the cylinder 10 stops extending and starts retracting.

Referring to fig. 4, the air holes 31 are tapered holes, and the inner diameters thereof gradually expand from top to bottom, so that the sewage is not easily blocked when passing through the air holes 31.

Referring to fig. 4, four second back-washing pipes 34 are provided on the inner wall of the vacuum suction table 3, and periodically wash the inner wall of the vacuum suction table 3 facing thereto, thereby preventing the inner wall of the vacuum suction table 3 from being scaled. When the sewage has high dirt content, the second back-flushing pipe 34 is opened to effectively dilute the sewage and prevent the sewage from blocking the suction pipe 4.

Referring to fig. 4, the vacuum adsorption platform 3 is funnel-shaped, and the inner cavity of the vacuum adsorption platform is funnel-shaped, so that the sewage can be gathered in the vacuum adsorption platform 3 and smoothly flows into the suction pipe 4 communicated with the bottom end of the vacuum adsorption platform.

Referring to fig. 5, a gas-liquid separator 6 and an air pipe 7 are arranged between the suction pipe 4 and the air pump 5, and a water pipe 8 is further connected to the gas-liquid separator 6. The gas-liquid separator 6 is hollow, the top of the gas-liquid separator is a cuboid, and the bottom of the gas-liquid separator is funnel-shaped. The air pipe 7 and the suction pipe 4 are communicated with the top of the gas-liquid separator 6, the air pipe 7 is positioned above the suction pipe 4, one end of the air pipe, which faces away from the gas-liquid separator 6, is connected with the air pump 5, and the water pipe 8 is communicated with the bottom end of the gas-liquid separator 6.

Referring to fig. 5, the air pipe 7 and the suction pipe 4 are provided on the same inner side wall of the gas-liquid separator 6, and a baffle plate 62 is provided therebetween, and the baffle plate 62 is also fixed to the inner side wall of the gas-liquid separator 6. A certain gap is left between one end of the baffle plate 62, which is back to the air pipe 7, and the other inner side wall of the gas-liquid separator 6, and two sides of the baffle plate 62 are respectively abutted against the two remaining inner side walls of the gas-liquid separator 6.

After the sewage and the air are ejected from the suction pipe 4, the air flow flows to the other side of the gas-liquid separator 6 along the lower surface of the baffle plate 62, then bypasses the baffle plate 62, and flows back to the side where the air pipe 7 is located. In the process, air is separated from sewage, and the settled sewage is converged at the bottom end of the gas-liquid separator 6 and then discharged through the water pipe 8.

Referring to fig. 5, the baffle plate 62 is disposed obliquely downward at an end opposite to the air tube 7, and if the sewage is entrained by the air flow, the sewage adheres to the lower surface of the baffle plate 62 and slides down along the lower surface of the baffle plate 62.

Referring to fig. 5, four first backwash pipes 61 are further provided on the inner wall of the gas-liquid separator 6, and the first backwash pipes 61 are located below the baffle 62, and periodically wash the inner wall of the gas-liquid separator 6 facing thereto, thereby preventing the inner wall of the gas-liquid separator 6 from being scaled. When the dirt content in the sewage is high, the first backwashing pipe 61 is opened to effectively dilute the sewage, so that the water pipe 8 is prevented from being blocked.

Referring to fig. 5 and 6, a water suction cylinder 63 is arranged at one end of the air pipe 7 facing the gas-liquid separator 6, and the water suction cylinder 63 is composed of a framework 64, water suction cotton 65 and a limiting plate 66. The framework 64 is fixedly connected with the limiting plate 66, and the absorbent cotton 65 is laid on the framework 64 to further dry the air flowing into the air pipe 7. The limit plate 66 is annular and is located at one end of the framework 64 facing the gas-liquid separator 6 and abuts against the inner wall of the gas-liquid separator 6.

The outer diameter of the stopper plate 66 is larger than the inner diameter of the air tube 7, and the frame 64 is not blown into the air tube 7 by the air flow.

The implementation principle of the above embodiment is as follows:

the high-pressure nozzle 1 sprays high-speed water flow to wash the dry net, sewage penetrating the dry net falls on the vacuum adsorption table 3, at the moment, the air pump 5 pumps air in the vacuum adsorption table 3 out, negative pressure is formed at the air hole 31, the sewage on the table top of the vacuum adsorption table 3 is sucked in, and then the sewage is discharged through the suction pipe 4. The mixture of sewage and air is separated in the gas-liquid separator 6, the sewage is discharged by the water pipe 8, the air is pumped by the air pump 5, and negative pressure is continuously formed in the vacuum adsorption platform 3.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a dry net belt cleaning device, includes high pressure nozzle (1) and spray pipe (2), high pressure nozzle (1) and spray pipe (2) are located and are netted the net top, its characterized in that: the drying net is characterized by further comprising a vacuum adsorption platform (3) arranged below the drying net, the vacuum adsorption platform (3) is arranged in a hollow mode, a plurality of air holes (31) are formed in the table top of the vacuum adsorption platform (3) in an array mode, a suction pipe (4) is arranged on the vacuum adsorption platform (3), one end of the suction pipe (4) is communicated with a cavity inside the vacuum adsorption platform (3), the other end of the suction pipe is connected with an air pump (5), a scraping plate (9) and an air cylinder (10) used for driving the scraping plate (9) to move are arranged on the table top of the vacuum adsorption platform (3), a slag collecting groove (11) is arranged at one end of the vacuum adsorption platform (3), two groups of sliding rails (32) are arranged on the table top of the vacuum adsorption platform (3), the sliding rails (32) are perpendicular to the scraping plate (9), sliding blocks (33) are arranged on the sliding rails (32), two ends of the scraping plate (9) are, the air hole (31) is a conical hole, the inner diameter of the top end of the air hole (31) is smaller than that of the bottom end of the air hole, and a second backwashing pipe (34) is arranged inside the vacuum adsorption platform (3).

2. The cleaning device for the drying net according to claim 1, wherein: be equipped with between straw (4) and air pump (5) vapour and liquid separator (6), be equipped with trachea (7) and water pipe (8) on vapour and liquid separator (6), trachea (7) and vapour and liquid separator (6) the link, straw (4) and vapour and liquid separator (6) the link and water pipe (8) and vapour and liquid separator (6) the link from top to bottom arrange in proper order, and trachea (7) link to each other with air pump (5) to the one end of vapour and liquid separator (6) dorsad.

3. The cleaning device for the drying net according to claim 2, wherein: a first backwashing pipe (61) is arranged in the gas-liquid separator (6), and the first backwashing pipe (61) is positioned below the gas pipe (7) and above the water pipe (8).

4. The cleaning device for the drying net according to claim 1, wherein: the hollow cavity in the vacuum adsorption platform (3) is funnel-shaped, and the bottom end of the hollow cavity is connected with the suction pipe (4).