A paper scraper

Abstract

This utility model relates to a scraper for papermaking. When it is necessary to scrape off impurities adhering to the inner wall of the filter cylinder, a screw jack can be operated to drive the scraper downward through the pressure plug. This allows the pulp inside the filter cylinder to be better discharged from the outside of the filter cylinder under the pressure of the pressure plug. At the same time, the scraper scrapes the inner wall of the filter cylinder, causing the impurities on the inner wall to move downward towards the scraper assembly along with the pressure plug and the scraper below the pressure plug. After the pulp is filtered, the pressure plug also scrapes the impurities into the lower scraper assembly. Then, the lower scraper assembly is operated to discharge the impurities to the outside of the device through the lower scraper assembly. Then, the screw jack is operated to reset the pressure plug. At the same time as the pressure plug is reset, the scraper above the pressure plug scrapes the inner wall of the filter cylinder again until the pressure plug is reset to the upper scraper assembly. The scraped impurities are discharged through the upper scraper assembly. Then, the pulp feeding mechanism is operated to filter the next batch of pulp.

Description

Technical Field

[0001] This utility model relates to the field of paper scraping equipment, and in particular to a paper scraping machine. Background Technology

[0002] Pulp is a fibrous material made from plant fibers through different processing methods. It can be classified into mechanical pulp, chemical pulp, and chemimechanical pulp according to the processing method, or into wood pulp, straw pulp, hemp pulp, reed pulp, sugarcane pulp, bamboo pulp, rag pulp, etc., according to the fiber raw materials used. Pulp needs to undergo a deslagging process to improve the smoothness of the paper.

[0003] However, during pulp filtration, the required pulp is filtered out of the device for later use, while impurities remain on the inner wall of the filter cylinder. It is difficult to clean the impurities effectively, and over time, the filter cylinder is easily clogged, thus affecting the filtration efficiency and quality of the pulp. To address this, we have proposed a paper scraper. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] In order to solve the above-mentioned problems of the prior art, the present invention provides a paper scraper, which can better clean the impurities remaining on the inner wall of the filter cartridge, so that the filter cartridge can better filter the pulp and reduce the impact of impurities on the filter cartridge.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0008] A paper scraper includes a filter cylinder, an outer cylinder, a slurry feeding mechanism, and a scraping mechanism. The outer cylinder is fitted around the filter cylinder, and a gap is provided between the filter cylinder and the outer cylinder. The filter cylinder is connected to the outer cylinder. A slurry discharge port is provided at the lower part of the outer cylinder. A slurry inlet is provided on the filter cylinder. The slurry feeding mechanism is connected to the slurry inlet. The scraping mechanism is connected to the inside of the filter cylinder. A plurality of filter holes are provided on the outside of the filter cylinder.

[0009] The slag scraping mechanism includes a screw jack, a pressure plug, a slide bar, a scraper, an upper slag discharge assembly, and a lower slag discharge assembly. The upper slag discharge assembly is located at the top of the filter cylinder, and the lower slag discharge assembly is located at the bottom of the filter cylinder. The pressure plug is slidably connected to the upper part of the upper slag discharge assembly via several slide bars. A scraper is located at the top and bottom of the pressure plug, and the scrapers are movably connected to the inner wall of the filter cylinder. The screw jack is located outside the upper slag discharge assembly and is drivenly connected to the upper part of the pressure plug.

[0010] Furthermore, the upper slag discharge assembly includes an upper slag discharge pipe, a slag inlet pipe, and a first valve body. The bottom of the upper slag discharge pipe is connected to the top of the filter cylinder. A first slag discharge port is provided in the middle of the upper slag discharge pipe. A slag inlet pipe is connected to the first slag discharge port. The first valve body is provided inside the slag inlet pipe.

[0011] Furthermore, the lower slag discharge assembly includes a lower slag discharge pipe and a second valve body. The top of the lower slag discharge pipe is connected to the bottom of the filter cylinder, and a second slag discharge port is provided at the bottom of the lower slag discharge pipe. The second valve body is provided inside the second slag discharge port.

[0012] Furthermore, the slurry guiding mechanism includes a slurry guiding pipe and a slurry pump. The slurry guiding pipe is horizontally inserted inside the outer cylinder. One end of the slurry guiding pipe is connected to the slurry inlet, and the other end of the slurry guiding pipe is connected to the slurry pump. The slurry pump is located outside the outer cylinder and is detachably connected to the outer wall of the outer cylinder.

[0013] Furthermore, it also includes a rinsing mechanism, which is connected to the slag scraping mechanism;

[0014] The flushing mechanism includes a water intake assembly, a first nozzle, a second nozzle, and a three-way valve. A first cavity is provided in the upper part of the pressure plug, and a second cavity is provided in the lower part of the pressure plug. The three-way valve is connected to the water intake assembly, the first cavity, and the second cavity respectively. A plurality of first nozzles are provided on the top surface of the pressure plug, and the first nozzles are connected to the first cavity. A plurality of second nozzles are provided on the bottom surface of the pressure plug, and the second nozzles are connected to the second cavity.

[0015] Furthermore, the water intake assembly includes a water pump and an inlet pipe. A flow channel is provided inside the slide rod. One end of the flow channel is connected to the three-way valve, and the other end of the flow channel is connected to one end of the inlet pipe. The other end of the inlet pipe is connected to the water pump, and the water pump is detachably connected to the outer wall of the outer cylinder.

[0016] Furthermore, it also includes a base, and the lower part of the outer cylinder is also fixedly connected to the base.

[0017] (III) Beneficial Effects

[0018] The beneficial effects of this utility model are as follows: In actual production and use, when pulp filtration is required, the pulp introduction mechanism can be operated to introduce the pulp into the filter cylinder for filtration. Subsequently, the filtered pulp flows through the filter holes on the filter cylinder, through the gap between the outer cylinder and the filter cylinder, and is discharged outside the device through the discharge port. When it is necessary to scrape off impurities adhering to the inner wall of the filter cylinder, the screw jack can be operated to drive the scraper downward through the pressure plug. This allows the pulp inside the filter cylinder to be better discharged outside the filter cylinder under the pressure of the pressure plug. At the same time, the scraper scrapes the inner wall of the filter cylinder, causing the impurities on the inner wall to follow the pressure plug and the scraper below the pressure plug. The plate moves towards the lower slag discharge assembly. After the pulp filtration is completed, the pressure plug scrapes the impurities into the lower slag discharge assembly. Then, the lower slag discharge assembly is operated to discharge the impurities outside the device. Subsequently, the screw jack is operated to reset the pressure plug. At the same time as the pressure plug is reset, the scraper on the upper part of the pressure plug scrapes the inner wall of the filter cartridge again until the pressure plug is reset to the upper slag discharge assembly. The scraped impurities are discharged through the upper slag discharge assembly. Then, the pulp feeding mechanism is operated to filter the next batch of pulp. This allows for better cleaning of the impurities remaining on the inner wall of the filter cartridge by the scraper, enabling the filter cartridge to filter the pulp better and reducing the impact of impurities on the filter cartridge. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a paper scraper according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall structure of a paper scraper according to an embodiment of the present invention;

[0021] Figure 3 This is a cross-sectional view of the overall structure of a paper scraper according to an embodiment of the present invention.

[0022] Figure 4 This is a cross-sectional view of the overall structure of a paper scraper according to an embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the scraping mechanism of a paper scraper according to an embodiment of the present invention;

[0024] [Explanation of Labels in the Attached Image]

[0025] 1. Slag scraping mechanism; 2. Slurry pump; 3. Base; 4. Outer cylinder; 5. Slag inlet pipe; 6. Upper slag discharge pipe; 7. First valve body; 8. Filter cylinder; 9. Slurry discharge port; 10. Second valve body; 11. Lower slag discharge pipe; 12. Slurry inlet pipe; 101. Flow channel; 102. Three-way valve; 103. Second cavity; 104. Slide rod; 105. Screw jack; 106. Scraper; 107. Pressure plug; 108. First nozzle; 109. Water pump; 110. Water inlet pipe; 111. First cavity. Detailed Implementation

[0026] To better explain and facilitate understanding of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] Please refer to Figures 1 to 5 As shown, a scraper for papermaking according to this utility model includes a filter cylinder 8, an outer cylinder 4, a slurry guiding mechanism, and a scraper mechanism 1. The outer cylinder 4 is sleeved on the outside of the filter cylinder 8, and a gap is provided between the filter cylinder 8 and the outer cylinder 4. The filter cylinder 8 is connected to the outer cylinder 4. A slurry discharge port 9 is provided at the lower part of the outer cylinder 4. A slurry inlet is provided on the filter cylinder 8. The slurry guiding mechanism is connected to the slurry inlet. The scraper mechanism 1 is connected to the inside of the filter cylinder 8. A plurality of filter holes are provided on the outside of the filter cylinder 8.

[0028] The slag scraping mechanism 1 includes a screw jack 105, a pressure plug 107, a slide rod 104, a scraper 106, an upper slag discharge assembly, and a lower slag discharge assembly. The upper slag discharge assembly is provided at the top of the filter cylinder 8, and the lower slag discharge assembly is provided at the bottom of the filter cylinder 8. The pressure plug 107 is slidably connected to the upper part of the upper slag discharge assembly through several slide rods 104. A scraper 106 is provided at the top and bottom of the pressure plug 107, and the scraper 106 is movably connected to the inner wall of the filter cylinder 8. The screw jack 105 is located outside the upper slag discharge assembly and is drivenly connected to the upper part of the pressure plug 107.

[0029] The working principle of this utility model is as follows: In actual production and use, when pulp filtration is required, the pulp introduction mechanism can be operated to introduce the pulp into the filter cylinder 8 for filtration. Subsequently, the filtered pulp flows through the filter holes on the filter cylinder 8 through the gap between the outer cylinder 4 and the filter cylinder 8, and is discharged outside the device through the discharge port 9. When it is necessary to scrape off the impurities adhering to the inner wall of the filter cylinder 8, the screw jack 105 can be operated to drive the scraper 106 downward through the pressure plug 107, so that the pulp in the filter cylinder 8 can be better discharged outside the filter cylinder 8 under the pressure of the pressure plug 107. At the same time, the scraper 106 scrapes the inner wall of the filter cylinder 8. The scraping action causes impurities on the inner wall to move downwards towards the slag discharge assembly along with the pressure plug 107 and the scraper 106 below the pressure plug 107. After pulp filtration is completed, the pressure plug 107 scrapes the impurities into the lower slag discharge assembly. Then, the lower slag discharge assembly is operated to discharge the impurities outside the device through the lower discharge assembly. Subsequently, the screw jack 105 is operated to reset the pressure plug 107. While the pressure plug 107 is resetting, the scraper 106 above the pressure plug 107 scrapes the inner wall of the filter cylinder 8 again until the pressure plug 107 is reset to the upper slag discharge assembly. The scraped impurities are discharged through the upper slag discharge assembly. Then, the pulp induction mechanism is operated to filter the next batch of pulp.

[0030] Furthermore, the upper slag discharge assembly includes an upper slag discharge pipe 6, a slag inlet pipe 5, and a first valve body 7. The bottom of the upper slag discharge pipe 6 is connected to the top of the filter cylinder 8. A first slag discharge port is provided in the middle of the upper slag discharge pipe 6. A slag inlet pipe 5 is connected to the first slag discharge port. The first valve body 7 is provided inside the slag inlet pipe 5.

[0031] As can be seen from the above description, when the pressure plug 107 is reset, the scraper 106 on the upper part of the pressure plug 107 scrapes the impurities in the filter cylinder 8 into the upper slag discharge pipe 6, and then the first valve body 7 is operated to open the first slag discharge port. Subsequently, the impurities in the upper slag discharge pipe 6 are discharged to the outside of the device through the slag inlet pipe 5.

[0032] Furthermore, the lower slag discharge assembly includes a lower slag discharge pipe 11 and a second valve body 10. The top of the lower slag discharge pipe 11 is connected to the bottom of the filter cylinder 8. A second slag discharge port is provided at the bottom of the lower slag discharge pipe 11, and the second valve body 10 is provided inside the second slag discharge port.

[0033] As can be seen from the above description, when the scraper 106 at the bottom of the pressure plug 107 scrapes the impurities into the lower slag discharge pipe 11, the second valve body 10 can be operated to open the second slag discharge port, and then the impurities in the lower slag discharge pipe 11 are discharged to the outside of the device through the second slag discharge port.

[0034] Furthermore, the slurry guiding mechanism includes a slurry guiding pipe 12 and a slurry pump 2. The slurry guiding pipe 12 is horizontally inserted inside the outer cylinder 4. One end of the slurry guiding pipe 12 is connected to the slurry inlet, and the other end of the slurry guiding pipe 12 is connected to the slurry pump 2. The slurry pump 2 is located outside the outer cylinder 4 and is detachably connected to the outer wall of the outer cylinder 4.

[0035] As can be seen from the above description, when pulp filtration is required, the pulp pump 2 can be operated to pump the pulp through the pulp inlet pipe 12 into the filter cylinder 8 for filtration.

[0036] Furthermore, it also includes a rinsing mechanism, which is connected to the slag scraping mechanism 1;

[0037] The flushing mechanism includes a water intake assembly, a first nozzle 108, a second nozzle, and a three-way valve 102. A first cavity 111 is provided in the upper part of the pressure plug 107, and a second cavity 103 is provided in the lower part of the pressure plug 107. The three-way valve 102 is connected to the water intake assembly, the first cavity 111, and the second cavity 103 respectively. A plurality of first nozzles 108 are provided on the top surface of the pressure plug 107, and the first nozzles 108 are connected to the first cavity 111. A plurality of second nozzles are provided on the bottom surface of the pressure plug 107, and the second nozzles are connected to the second cavity 103.

[0038] Furthermore, the water intake assembly includes a water pump 109 and an inlet pipe 110. A flow channel 101 is provided inside the slide rod 104. One end of the flow channel 101 is connected to the three-way valve 102, and the other end of the flow channel 101 is connected to one end of the inlet pipe 110. The other end of the inlet pipe 110 is connected to the water pump 109. The water pump 109 is detachably connected to the outer wall of the outer cylinder 4.

[0039] As can be seen from the above description, when it is necessary to flush the inside of the upper slag discharge pipe 6 and the lower slag discharge pipe 11 after slag discharge, the water pump 109 can be operated to introduce clean water into the flow channel 101 through the water inlet pipe 110. When cleaning the upper slag discharge pipe 6, the three-way valve 102 can be operated to allow the clean water in the flow channel 101 to enter the first cavity 111, and then the upper slag discharge pipe 6 is cleaned through the first nozzle 108. When cleaning the lower slag discharge pipe 11, the three-way valve 102 can be operated to allow the clean water in the flow channel 101 to enter the second cavity 103, and then the lower slag discharge pipe 11 is cleaned through the second nozzle.

[0040] Furthermore, it also includes a base 3, and the lower part of the outer cylinder 4 is also fixedly connected to the base 3.

[0041] As can be seen from the above description, it is beneficial to make the device operate more stably and to allow impurities and pulp to be discharged from the pulp discharge port 9 and the second slag discharge port to the outside of the device. Example 1

[0042] Please refer to Figures 1 to 5 A paper scraper includes a filter cylinder 8, an outer cylinder 4, a slurry guiding mechanism, and a scraping mechanism 1. The outer cylinder 4 is sleeved on the outside of the filter cylinder 8, and a gap is provided between the filter cylinder 8 and the outer cylinder 4. The filter cylinder 8 is connected to the outer cylinder 4. A slurry discharge port 9 is provided at the lower part of the outer cylinder 4. A slurry inlet is provided on the filter cylinder 8. The slurry guiding mechanism is connected to the slurry inlet. The scraping mechanism 1 is connected to the inside of the filter cylinder 8. A plurality of filter holes are provided on the outside of the filter cylinder 8.

[0043] The slag scraping mechanism 1 includes a screw jack 105, a pressure plug 107, a slide rod 104, a scraper 106, an upper slag discharge assembly, and a lower slag discharge assembly. The upper slag discharge assembly is provided at the top of the filter cylinder 8, and the lower slag discharge assembly is provided at the bottom of the filter cylinder 8. The pressure plug 107 is slidably connected to the upper part of the upper slag discharge assembly through several slide rods 104. A scraper 106 is provided at the top and bottom of the pressure plug 107, and the scraper 106 is movably connected to the inner wall of the filter cylinder 8. The screw jack 105 is provided outside the upper slag discharge assembly and is drivenly connected to the upper part of the pressure plug 107.

[0044] The upper slag discharge assembly includes an upper slag discharge pipe 6, a slag inlet pipe 5, and a first valve body 7. The bottom of the upper slag discharge pipe 6 is connected to the top of the filter cylinder 8. A first slag discharge port is provided in the middle of the upper slag discharge pipe 6. A slag inlet pipe 5 is connected to the first slag discharge port. The first valve body 7 is provided inside the slag inlet pipe 5.

[0045] The lower slag discharge assembly includes a lower slag discharge pipe 11 and a second valve body 10. The top of the lower slag discharge pipe 11 is connected to the bottom of the filter cylinder 8. A second slag discharge port is provided at the bottom of the lower slag discharge pipe 11, and the second valve body 10 is provided inside the second slag discharge port.

[0046] Both the first valve body 7 and the second valve body 10 are butterfly valves;

[0047] The slurry guiding mechanism includes a slurry guiding pipe 12 and a slurry pump 2. The slurry guiding pipe 12 is horizontally inserted inside the outer cylinder 4. One end of the slurry guiding pipe 12 is connected to the slurry inlet, and the other end of the slurry guiding pipe 12 is connected to the slurry pump 2. The slurry pump 2 is located outside the outer cylinder 4 and is detachably connected to the outer wall of the outer cylinder 4.

[0048] It also includes a rinsing mechanism, which is connected to the slag scraping mechanism 1;

[0049] The flushing mechanism includes a water intake assembly, a first nozzle 108, a second nozzle, and a three-way valve 102. The upper part of the pressure plug 107 is provided with a first cavity 111, and the lower part of the pressure plug 107 is provided with a second cavity 103. The three-way valve 102 is connected to the water intake assembly, the first cavity 111, and the second cavity 103 respectively. The top surface of the pressure plug 107 is provided with a plurality of first nozzles 108, which are connected to the first cavity 111. The bottom surface of the pressure plug 107 is provided with a plurality of second nozzles, which are connected to the second cavity 103.

[0050] The water intake assembly includes a water pump 109 and an inlet pipe 110. A flow channel 101 is provided inside the slide rod 104. One end of the flow channel 101 is connected to the three-way valve 102, and the other end of the flow channel 101 is connected to one end of the inlet pipe 110. The other end of the inlet pipe 110 is connected to the water pump 109. The water pump 109 is detachably connected to the outer wall of the outer cylinder 4.

[0051] It also includes a base 3, and the lower part of the outer cylinder 4 is fixedly connected to the base 3 by welding;

[0052] It also includes a PLC controller, which is connected to the screw jack 105, the first valve body 7, the second valve body 10, the slurry pump 2, the three-way valve 102, and the water pump 109.

[0053] The above describes the basic principles, main features, and advantages of this utility model. All standard parts used in this utility model can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods for each part all adopt conventional methods such as bolts, rivets, and welding, which are mature technologies in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art, and the circuit connections adopt conventional connection methods in the prior art, which will not be detailed here.

[0054] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A papermaking doctor blade, characterized by: The filter includes a filter cylinder, an outer cylinder, a slurry guiding mechanism, and a slag scraping mechanism. The outer cylinder is fitted around the filter cylinder, and a gap is provided between the filter cylinder and the outer cylinder. The filter cylinder is connected to the outer cylinder, and a slurry discharge port is provided at the bottom of the outer cylinder. A slurry inlet is provided on the top of the filter cylinder, and the slurry guiding mechanism is connected to the slurry inlet. The slag scraping mechanism is connected to the inside of the filter cylinder, and a plurality of filter holes are provided on the outside of the filter cylinder. The slag scraping mechanism includes a screw jack, a pressure plug, a slide bar, a scraper, an upper slag discharge assembly, and a lower slag discharge assembly. The upper slag discharge assembly is located at the top of the filter cylinder, and the lower slag discharge assembly is located at the bottom of the filter cylinder. The pressure plug is slidably connected to the upper part of the upper slag discharge assembly via several slide bars. A scraper is located at the top and bottom of the pressure plug, and the scrapers are movably connected to the inner wall of the filter cylinder. The screw jack is located outside the upper slag discharge assembly and is drivenly connected to the upper part of the pressure plug.

2. The paper scraper as described in claim 1, characterized in that: The upper slag discharge assembly includes an upper slag discharge pipe, a slag inlet pipe, and a first valve body. The bottom of the upper slag discharge pipe is connected to the top of the filter cylinder. A first slag discharge port is provided in the middle of the upper slag discharge pipe. A slag inlet pipe is connected to the first slag discharge port. The first valve body is provided inside the slag inlet pipe.

3. The paper scraper as described in claim 1, characterized in that: The lower slag discharge assembly includes a lower slag discharge pipe and a second valve body. The top of the lower slag discharge pipe is connected to the bottom of the filter cylinder. A second slag discharge port is provided at the bottom of the lower slag discharge pipe, and the second valve body is provided inside the second slag discharge port.

4. The paper scraper as described in claim 1, characterized in that: The slurry guiding mechanism includes a slurry guiding pipe and a slurry pump. The slurry guiding pipe is horizontally inserted inside the outer cylinder. One end of the slurry guiding pipe is connected to the slurry inlet, and the other end of the slurry guiding pipe is connected to the slurry pump. The slurry pump is located outside the outer cylinder and is detachably connected to the outer wall of the outer cylinder.

5. The paper scraper as described in claim 1, characterized in that: It also includes a rinsing mechanism, which is connected to the slag scraping mechanism; The flushing mechanism includes a water intake assembly, a first nozzle, a second nozzle, and a three-way valve. A first cavity is provided in the upper part of the pressure plug, and a second cavity is provided in the lower part of the pressure plug. The three-way valve is connected to the water intake assembly, the first cavity, and the second cavity respectively. A plurality of first nozzles are provided on the top surface of the pressure plug, and the first nozzles are connected to the first cavity. A plurality of second nozzles are provided on the bottom surface of the pressure plug, and the second nozzles are connected to the second cavity.

6. The paper scraper as described in claim 5, characterized in that: The water intake assembly includes a water pump and an inlet pipe. A flow channel is provided inside the slide rod. One end of the flow channel is connected to the three-way valve, and the other end of the flow channel is connected to one end of the inlet pipe. The other end of the inlet pipe is connected to the water pump. The water pump is detachably connected to the outer wall of the outer cylinder.

7. The paper scraper as described in claim 1, characterized in that: It also includes a base, and the lower part of the outer cylinder is fixedly connected to the base.

Images