Cordless paper guide device for fourdrinier

Abstract

The utility model discloses a cordless paper guiding device for a fourdrinier, which relates to the technical field of paper guiding and comprises a paper guiding support and an adjusting cylinder, a mounting flange seat is arranged in the middle of the paper guiding support, the paper guiding support is hinged on the mounting flange seat, a paper scraping knife is arranged at the top of the paper guiding support, and a fixing support is arranged in the middle of the left side of the paper guiding support. A connecting rod is arranged on the lower portion of the left side of the paper guiding support, the bottom of an adjusting air cylinder is hinged to the connecting rod, the output end of the adjusting air cylinder is hinged to the fixing support, a front paper blowing nozzle and a rear paper blowing nozzle are arranged on the upper portion and the lower portion of the right side of the paper guiding support respectively, a front paper blowing baffle is arranged on the front paper blowing nozzle, and a rear paper blowing baffle is arranged on the rear paper blowing nozzle. The whole process does not need a paper leading rope, the repair and maintenance work of the paper leading rope is reduced, the working efficiency is greatly improved, paper leading is rapid and accurate, and safety and reliability are high.

Description

Technical Field

[0001] The utility model relates to the technical field of paper threading, in particular to a ropeless paper threading device for a Fourdrinier paper machine. Background Art

[0002] Papermaking is a term for paper processing technology, mainly referring to the papermaking method. The main method is to evenly interweave and dehydrate the thin paper stock, and then dry, calender, roll, cut, sort, and package it. Therefore, the common process is as follows: the prepared paper stock is diluted to a lower concentration, and the screening equipment is used to screen out impurities and undissociated fiber bundles again to maintain quality and protect the equipment; the mesh part allows the paper stock to flow out from the head box and evenly spread on the circulating copper wire mesh or plastic mesh. Distribution and interweaving; the pressing part leads the wet paper removed from the mesh surface to between two rollers with felt cloth, and through the pressing of the rollers and the water absorption of the felt cloth, the wet paper is further dehydrated and made denser to improve the paper surface and increase the strength; since the moisture content of the wet paper after pressing is still as high as 52%-70%, it is no longer possible to use mechanical force to remove the moisture, so the wet paper is allowed to pass through the surface of many cylinders with hot steam inside to dry the paper; the paper web is rolled into a roll by a paper reel.

[0003] During the papermaking process, threading after a shutdown and re-threading after a paper break are the most labor-intensive phases. Achieving rapid threading can significantly improve paper machine efficiency. However, in traditional Fourdrinier paper machines, paper is typically transported by drawing ropes during the threading process, which is labor-intensive and inefficient. Utility Model Content

[0004] In order to overcome the defects of high labor intensity and low efficiency of paper threading with a paper threading rope in the prior art, the utility model provides a ropeless paper threading device for a Fourdrinier paper machine.

[0005] The utility model solves the technical problem adopted by the technical solution: a ropeless paper feeding device for a fourdrinier paper machine, comprising a paper feeding bracket and an adjusting cylinder, a mounting flange seat is provided in the middle of the paper feeding bracket, the paper feeding bracket is hinged on the mounting flange seat, a paper scraper is provided on the top of the paper feeding bracket, a fixed bracket is provided in the middle of the left side of the paper feeding bracket, a connecting rod is provided on the lower left side of the paper feeding bracket, the bottom of the adjusting cylinder is hinged on the connecting rod, the output end of the adjusting cylinder is hinged to the fixed bracket, a front paper blowing nozzle and a rear paper blowing nozzle are respectively provided on the upper and lower right sides of the paper feeding bracket, a front paper blowing baffle is provided on the front paper blowing nozzle, and a rear paper blowing baffle is provided on the rear paper blowing nozzle.

[0006] As a further improvement of the present invention, the paper scraper is made of carbon fiber.

[0007] As a further improvement of the present invention, the paper scraper is installed on the paper guide bracket through a scraper pneumatic tire.

[0008] As a further improvement of the present invention, the front paper blowing baffle and the rear paper blowing baffle are both drying mesh plates.

[0009] As a further improvement of the present invention, the front paper blowing nozzle and the rear paper blowing nozzle are respectively connected to the air compression pump through air pipes and are controlled by corresponding solenoid valves.

[0010] As a further improvement of the present invention, the paper guide bracket is a stainless steel bracket.

[0011] Compared with the prior art, the present invention has the following beneficial effects: in this solution, the scraper causes the paper tail to peel off the surface of the upper drying cylinder, and the compressed air enters the front paper blowing nozzle through the air duct. The front paper blowing nozzle ejects an airflow to lead the paper peeled off the surface of the upper drying cylinder to the front paper blowing baffle. Under the action of the airflow, the paper tail runs along the front paper blowing baffle; when the paper tail separates from the front paper blowing baffle, the rear paper blowing nozzle ejects an airflow to lead the paper to the rear paper blowing baffle. Under the action of the airflow, the paper tail runs along the rear paper blowing baffle. The rear paper blowing baffle sends the paper tail into the lower drying cylinder and makes the paper tail quickly stick to the surface of the lower drying cylinder, thereby completing paper guiding, realizing safe and smooth paper guiding, and improving the production efficiency of the paper machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 The utility model is a structural schematic diagram of a ropeless paper threading device for a Fourdrinier paper machine.

[0014] Figure 2 This is a schematic diagram of the installation of the present utility model.

[0015] In the figure: 1. Paper guide bracket; 2. Mounting flange; 3. Paper scraper; 4. Paper scraper pneumatic tire; 5. Fixed bracket; 6. Connecting rod; 7. Adjustment cylinder; 8. Front paper blowing nozzle; 9. Rear paper blowing nozzle; 10. Front paper blowing baffle; 11. Rear paper blowing baffle; 12. Upper drying cylinder; 13. Lower drying cylinder. DETAILED DESCRIPTION

[0016] In order to make the technical solution and beneficial effects of the present invention more clearly understood, the present invention will be further described in detail below with reference to specific embodiments.

[0017] Reference Figure 1 and Figure 2The embodiment of the utility model discloses a ropeless paper guiding device for a fourdrinier paper machine, which is installed between an upper drying cylinder 12 and a lower drying cylinder 13, and includes a paper guiding support 1 and an adjusting cylinder 7. A mounting flange seat 2 is provided in the middle of the paper guiding support 1, and the paper guiding support 1 is hinged on the mounting flange seat 2. A scraper 3 is provided on the top of the paper guiding support 1, a fixed support 5 is provided on the middle left side of the paper guiding support 1, a connecting rod 6 is provided on the lower left side of the paper guiding support 1, and the bottom of the adjusting cylinder 7 is hinged on the connecting rod 6. The output end of the adjusting cylinder 7 is hinged to the fixed support 5, and a front paper blowing nozzle 8 and a rear paper blowing nozzle 9 are respectively provided on the upper and lower right sides of the paper guiding support 1. A front paper blowing baffle 10 is provided on the front paper blowing nozzle 8, and a rear paper blowing baffle 11 is provided on the rear paper blowing nozzle 9.

[0018] The front paper blowing nozzle 8 and the rear paper blowing nozzle 9 are respectively connected to the air compression pump through air pipes and controlled by corresponding solenoid valves.

[0019] The scraper 3 causes the paper tail to peel off the surface of the upper drying cylinder 12, and the solenoid valve is opened. Compressed air enters the front paper blowing nozzle 8 through the air duct. The front paper blowing nozzle 8 ejects an airflow to guide the paper peeled off the surface of the upper drying cylinder 12 to the front paper blowing baffle 10. Under the action of the airflow, the paper tail runs along the front paper blowing baffle 10; when the paper tail separates from the front paper blowing baffle 10, the rear paper blowing nozzle 9 ejects an airflow to guide the paper to the rear paper blowing baffle 11. Under the action of the airflow, the paper tail runs along the rear paper blowing baffle 11. The rear paper blowing baffle 11 sends the paper tail into the lower drying cylinder 13 and quickly sticks the paper tail to the surface of the lower drying cylinder 13, thereby completing paper threading, achieving safe and smooth paper threading, and improving the production efficiency of the paper machine.

[0020] The telescopic cylinder is controlled to extend and retract, adjusting the angle of the scraper blade 3 so that it contacts the surface of the upper drying cylinder 12. The telescopic cylinder is then controlled to extend and retract, adjusting the angle of the rear paper-blowing baffle 11 so that it contacts the surface of the lower drying cylinder 13. This entire process eliminates the need for paper-threading ropes, reducing their maintenance and significantly improving work efficiency. Paper threading is quick, accurate, safe, and reliable.

[0021] The paper guide bracket 1 is made of stainless steel, and the paper scraper 3 is made of carbon fiber. The paper scraper 3 is mounted on the paper guide bracket 1 via a pneumatic scraper 4. The pneumatic scraper 4 ensures that the linear pressure of the paper scraper 3 on the roller surface is consistent, scraping the roller surface more evenly, effectively removing paper from the roller surface, and extending the service life of the scraper blade.

[0022] The front paper blowing baffle 10 and the rear paper blowing baffle 11 are both drying screen plates to prevent the paper from being closely attached and adsorbed.

[0023] It should be understood that the specific embodiments described herein are only used to understand the present invention and are not used to limit the present invention. All other embodiments obtained by those skilled in the art without making any creative work are within the scope of protection of the present invention.

Claims

1. A ropeless paper threading device for a Fourdrinier paper machine, characterized in that: The invention comprises a paper guide bracket (1) and an adjusting cylinder (7), wherein a mounting flange seat (2) is provided in the middle of the paper guide bracket (1), the paper guide bracket (1) is hinged on the mounting flange seat (2), a paper scraper (3) is provided on the top of the paper guide bracket (1), a fixed bracket (5) is provided in the middle of the left side of the paper guide bracket (1), a connecting rod (6) is provided at the lower left side of the paper guide bracket (1), the bottom of the adjusting cylinder (7) is hinged on the connecting rod (6), the output end of the adjusting cylinder (7) is hinged to the fixed bracket (5), a front paper blowing nozzle (8) and a rear paper blowing nozzle (9) are provided at the upper and lower right sides of the paper guide bracket (1), respectively, a front paper blowing baffle (10) is provided on the front paper blowing nozzle (8), and a rear paper blowing baffle (11) is provided on the rear paper blowing nozzle (9).

2. The ropeless threading device for a Fourdrinier paper machine according to claim 1, characterized in that: The scraper (3) is made of carbon fiber.

3. The ropeless paper threading device for a Fourdrinier paper machine according to claim 2, characterized in that: The scraper (3) is mounted on the paper guide bracket (1) via the scraper pneumatic tire (4).

4. The ropeless paper threading device for a Fourdrinier paper machine according to claim 3, characterized in that: The front paper blowing baffle (10) and the rear paper blowing baffle (11) are both dryer screen plates.

5. The ropeless paper threading device for a Fourdrinier paper machine according to claim 4, characterized in that: The front paper blowing nozzle (8) and the rear paper blowing nozzle (9) are respectively connected to the air compression pump through the air pipe and controlled by the corresponding electromagnetic valve.

6. The ropeless threading device for a Fourdrinier paper machine according to claim 5, characterized in that: The paper guide bracket (1) is a stainless steel bracket.

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