Papermaking white water filtering device

Abstract

The utility model belongs to the technical field of papermaking, and particularly relates to a papermaking white water filtering device which comprises a tank body, a cover plate is assembled on the top of the tank body, a water inlet pipe is fixedly connected to the top end of the cover plate, a filter screen is assembled on the inner wall of the tank body, a support is fixedly connected to the bottom of the tank body, and a drainage pipe is fixedly connected to the position, close to the bottom end, of the side wall of the tank body. A rotating shaft is rotationally connected to the bottom surface of an inner cavity of the tank body, the top end of the rotating shaft penetrates through the filter screen and is rotationally connected with the filter screen, a motor is fixedly connected to the bottom end of the tank body, the output end of the motor is fixedly connected with the rotating shaft, a sleeve is assembled at the top end of the rotating shaft, a scraper is fixedly connected to the side wall of the sleeve, and a cleaning assembly is arranged on the side wall of the scraper. According to the device, the white water can be continuously filtered, and the filtered paper pulp fiber does not need to be manually cleaned, so that the purpose of continuously and efficiently filtering is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of papermaking, and particularly relates to a papermaking white water filtering device. Background Art

[0002] In the papermaking industry, white water, also known as pulp effluent or paper machine white water, is wastewater generated during the papermaking process and typically contains pulp fibers, chemicals, fillers, and other impurities. Effectively filtering and treating this white water is crucial for improving paper quality, conserving resources, and protecting the environment. White water typically requires filtration and purification before it meets discharge standards. Because white water contains a high concentration of pulp fibers, initial filtration and separation of the pulp fibers is necessary during its initial treatment.

[0003] Most of the existing filtration equipment uses filter screens for rotary filtration or drum filtration. After a certain period of filtration, the equipment needs to be stopped to collect and clean the collected pulp fibers for subsequent filtration. This method has low sustainability during filtration, and shutdown for cleaning often takes a lot of time, affecting the filtration efficiency of white water. Utility Model Content

[0004] The purpose of this utility model is to provide a papermaking white water filtering device, which can continuously filter the white water, and the filtered pulp fibers do not need to be manually cleaned, thereby achieving the purpose of continuous and efficient filtration.

[0005] The technical solutions adopted in this application are as follows:

[0006] A papermaking white water filtering device comprises a tank body, the top of the tank body is equipped with a cover plate, the top of the cover plate is fixedly connected to a water inlet pipe, the inner wall of the tank body is equipped with a filter screen, the bottom of the tank body is fixedly connected to a bracket, the side wall of the tank body is fixedly connected to a drain pipe near the bottom end, the bottom surface of the tank body cavity is rotatably connected to a rotating shaft, the top end of the rotating shaft passes through the filter screen and is rotatably connected to it, the bottom end of the tank body is fixedly connected to a motor, the output end of the motor is fixedly connected to the rotating shaft, the top end of the rotating shaft is equipped with a sleeve, the side wall of the sleeve is fixedly connected to a scraper, and the side wall of the scraper is provided with a cleaning component.

[0007] The cleaning assembly includes a collecting box fixedly connected to the side wall of the scraper, a material guide pipe fixedly connected to the rear side wall of the collecting box, the material guide pipe is communicated with the sleeve, a plurality of round tubes fixedly connected to the side wall of the material guide tube, the round tubes pass through the collecting box, the top end of the sleeve is rotatably connected to a drain pipe, and the drain pipe passes through the tank body.

[0008] The side wall of the sleeve is threadedly connected to two bolts, and the bolts are threadedly connected to the rotating shaft.

[0009] A tapered tube is provided at the lower side of the water inlet pipe, a support rod is fixedly connected to the side wall of the tapered tube, and the support rod is fixedly connected to the inner wall of the tank body.

[0010] The inner wall of the tank body is fixedly connected with an inclined plate, and the rotating shaft passes through the inclined plate and is rotatably connected thereto.

[0011] The scraper is arranged in an inclined manner and abuts against the filter screen.

[0012] The technical effects achieved by this utility model are:

[0013] This practical papermaking white water filtration device adopts a continuous filtration method through the mutual cooperation between the tank body, cover plate, water inlet pipe, filter screen, scraper and cleaning component, which can efficiently separate the pulp fibers in the white water. In combination with the cleaning component, the pulp in the collection box can be adsorbed and discharged at regular intervals, effectively solving the problem of traditional cleaning that requires shutdown, thereby improving its filtration efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of this practical embodiment;

[0015] Figure 2 It is a schematic cross-sectional view of the structure of this practical embodiment;

[0016] Figure 3 This is a schematic structural diagram of the tapered tube of this practical embodiment;

[0017] Figure 4 This is a rear structural schematic diagram of the cleaning assembly of this practical embodiment;

[0018] Figure 5 It is a front structural schematic diagram of the cleaning component of this practical embodiment.

[0019] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0020] 1. Tank body; 2. Cover plate; 3. Water inlet pipe; 4. Filter screen; 5. Bracket; 6. Drain pipe; 7. Rotating shaft; 8. Motor; 9. Sleeve; 10. Scraper; 11. Collection box; 12. Round tube; 13. Material guide tube; 14. Drain pipe; 15. Bolt; 16. Conical tube; 17. Support rod; 18. Inclined plate. DETAILED DESCRIPTION

[0021] In order to make the purpose and advantages of this utility more clear, the utility is described in detail below with reference to the embodiments. It should be understood that the following text is only used to describe one or several specific implementation methods of this utility and does not strictly limit the scope of protection specifically requested by this utility.

[0022] like Figure 1-Figure 5As shown, a papermaking white water filtering device includes a tank body 1, a cover plate 2 is assembled on the top of the tank body 1, a water inlet pipe 3 is fixedly connected to the top of the cover plate 2, a filter screen 4 is assembled on the inner wall of the tank body 1, a bracket 5 is fixedly connected to the bottom of the tank body 1, a drain pipe 6 is fixedly connected to the side wall of the tank body 1 near the bottom end, a rotating shaft 7 is rotatably connected to the bottom surface of the inner cavity of the tank body 1, the top end of the rotating shaft 7 passes through the filter screen 4 and is rotatably connected to it, a motor 8 is fixedly connected to the bottom end of the tank body 1, the output end of the motor 8 is fixedly connected to the rotating shaft 7, a sleeve 9 is assembled on the top of the rotating shaft 7, a scraper 10 is fixedly connected to the side wall of the sleeve 9, and a cleaning component is provided on the side wall of the scraper 10.

[0023] like Figure 2 and Figure 4 As shown, the cleaning assembly includes a collecting box 11 fixedly connected to the side wall of the scraper 10, and a material guide pipe 13 is fixedly connected to the rear side wall of the collecting box 11. The material guide pipe 13 is connected to the sleeve 9, and a plurality of circular tubes 12 are fixedly connected to the side wall of the material guide pipe 13. The circular tubes 12 pass through the collecting box 11, and a sewage pipe 14 is rotatably connected to the top of the sleeve 9, and the sewage pipe 14 passes through the tank body 1.

[0024] Among them, the drain pipe 14 needs to be connected to an external negative pressure device, preferably a fan, which can extract the pulp fibers accumulated in the collection box 11, and when extracting the pulp fibers, the discharge of white water into the tank body 1 can be temporarily stopped to avoid part of the white water being discharged along the drain pipe 14 and affecting the filtering effect; in addition, the drain pipe 14 and the sleeve 9 are detachably connected.

[0025] like Figure 4 and Figure 5 As shown, the side wall of the sleeve 9 is threadedly connected with two bolts 15, and the bolts 15 are threadedly connected to the rotating shaft 7. The connection method using the bolts 15 facilitates the removal of the scraper 10 and the collecting box 11 for cleaning or replacement at a later time, which is used to extend the service life of each structure.

[0026] like Figure 2 and Figure 3 As shown, a tapered tube 16 is provided on the lower side of the water inlet pipe 3 , a support rod 17 is fixedly connected to the side wall of the tapered tube 16 , and the support rod 17 is fixedly connected to the inner wall of the tank body 1 .

[0027] Among them, when the water inlet pipe 3 discharges white water, the water flow impacts the conical tube 16, which can, on the one hand, alleviate the impact of the water flow impact on the filter screen 4, and on the other hand, facilitate the dispersion of pulp fibers, effectively improving its filtering effect.

[0028] like Figure 2 As shown, the inner wall of the tank body 1 is fixedly connected to an inclined plate 18, and the rotating shaft 7 passes through the inclined plate 18 and is rotatably connected thereto. The drain pipe 6 is located on the upper side of the inclined plate 18, and the inclined plate 18 is inclined toward the drain pipe 6 to accelerate the discharge rate of the filtered water flow and improve its use effect.

[0029] like Figure 5 As shown, the scraper 10 is tilted and abuts against the filter screen 4. The scraper 10 is tilted at an angle of preferably 45 degrees, which can facilitate scraping and collecting the pulp fibers on the filter screen 4.

[0030] The working principle of the utility model is as follows: first, the water inlet pipe 3 is connected to the external sewage pipe to discharge white water into the tank body 1, and then the sewage pipe 14 is connected to the external negative pressure pipe. When the white water is discharged into the tank body 1, the white water is evenly discharged onto the filter screen 4 through the tapered tube 16, and the motor 8 is started at the same time. The output shaft of the motor 8 drives the rotating shaft 7 to rotate, and the rotating shaft 7 drives the scraper 10 and the collecting box 11 to rotate through the sleeve 9. The scraper 10 scrapes off the pulp fibers separated on the filter screen 4, and the pulp fibers enter the collecting box 11 along the inclined surface of the scraper 10. When the pulp in the collecting box 11 reaches a certain capacity, the external negative pressure equipment is started to generate negative pressure in the sewage pipe 14. The sewage pipe 14 draws out the limit in the collecting box 11 through the circular tube 12, so as to achieve the purpose of convenient discharge, effectively solves the time delayed by traditional shutdown cleaning, and thus improves its filtering efficiency.

[0031] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this application shall be implemented in accordance with conventional means in the art unless otherwise specified or limited.

Claims

1. A papermaking white water filtration device, characterized by: The invention comprises a tank body (1), wherein the top of the tank body (1) is equipped with a cover plate (2), the top of the cover plate (2) is fixedly connected to a water inlet pipe (3), the inner wall of the tank body (1) is equipped with a filter screen (4), the bottom of the tank body (1) is fixedly connected to a bracket (5), the side wall of the tank body (1) is fixedly connected to a drain pipe (6) near the bottom end, the bottom surface of the inner cavity of the tank body (1) is rotatably connected to a rotating shaft (7), the top end of the rotating shaft (7) passes through the filter screen (4) and is rotatably connected thereto, the bottom end of the tank body (1) is fixedly connected to a motor (8), the output end of the motor (8) is fixedly connected to the rotating shaft (7), the top end of the rotating shaft (7) is equipped with a sleeve (9), the side wall of the sleeve (9) is fixedly connected to a scraper (10), and the side wall of the scraper (10) is provided with a cleaning component.

2. A papermaking white water filtration device according to claim 1, characterized in that: The cleaning assembly comprises a collecting box (11) fixedly connected to the side wall of the scraper (10); a guide tube (13) is fixedly connected to the rear side wall of the collecting box (11); the guide tube (13) is communicated with the sleeve (9); a plurality of circular tubes (12) are fixedly connected to the side wall of the guide tube (13); the circular tubes (12) pass through the collecting box (11); a drain pipe (14) is rotatably connected to the top end of the sleeve (9); and the drain pipe (14) passes through the tank body (1).

3. The papermaking white water filtration device according to claim 1, characterized in that: The side wall of the sleeve (9) is threadedly connected with two bolts (15), and the bolts (15) are threadedly connected to the rotating shaft (7).

4. The papermaking white water filtration device according to claim 1, characterized in that: A conical tube (16) is provided on the lower side of the water inlet pipe (3), a support rod (17) is fixedly connected to the side wall of the conical tube (16), and the support rod (17) is fixedly connected to the inner wall of the tank body (1).

5. The papermaking white water filtration device according to claim 1, characterized in that: The inner wall of the tank body (1) is fixedly connected with an inclined plate (18), and the rotating shaft (7) passes through the inclined plate (18) and is rotatably connected thereto.

6. The papermaking white water filtration device according to claim 1, characterized in that: The scraper (10) is arranged at an angle, and the scraper (10) abuts against the filter screen (4).

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