Diluting and stirring device for high-concentration reaction tower

Abstract

The utility model discloses a diluting and stirring device for a high-concentration reaction tower in the technical field of high-concentration reaction tower equipment. The diluting and stirring device comprises a transmission seat, a transmission shaft with the top extending out is arranged in an inner cavity of the transmission seat, a stirring assembly is arranged at the top of the transmission shaft, a sealing assembly is arranged outside the transmission seat, and a diluting water opening is formed in the top of the inner cavity of the transmission seat. The material stirring assembly comprises a middle ring, the middle ring is connected to the top of the transmission shaft in a sleeving mode, rotating arms are arranged on the two sides of the middle ring, the interiors of the middle ring and the rotating arms are hollow, the interiors of the middle ring and the rotating arms are communicated, blocking plates are arranged at the ends, away from the middle ring, of the two rotating arms, and one-way nozzles are arranged on the side walls of the rotating arms. Scraping plates are arranged at the bottoms of the rotating arms, and a water inlet is formed in the bottom of the middle ring. Through reasonable design of the material stirring assembly and the sealing assembly, it is guaranteed that dilution at the bottom of the high-concentration reaction tower is uniform, efficient and stable, and then it is guaranteed that discharging at the bottom of the high-concentration reaction tower is efficient and stable.

Description

Technical Field

[0001] This utility model relates to the technical field of high-concentration reaction tower equipment, and in particular to a dilution feeding device for a high-concentration reaction tower. Background Technology

[0002] In the pulping industry, which uses forestry residues such as bamboo and wood as pulping raw materials, high-consistency reaction towers are used to add chemicals to the pulp sprayed after grinding by high-temperature fibrillation machines (thermal mills, or high-pressure mills, etc.) to further soften the fibers and remove excess lignin. Bleaching chemicals can also be added to bleach the pulp.

[0003] When a high-concentration reaction tower is operating, the slurry concentration inside the tower is high, which has the advantages of improving reaction efficiency and saving a significant amount of water and chemicals. However, after the slurry reaction is complete, it needs to be discharged from the bottom discharge port under the action of a bottom feeding device. At this point, the slurry concentration needs to be reduced; otherwise, the discharge efficiency will be affected and the pipeline may be blocked. Therefore, dilution water needs to be added to the bottom of the high-concentration reaction tower. Traditional dilution methods generally involve adding a dilution water pipeline to the bottom of the high-concentration reaction tower. However, this method results in excessively low concentration near the pipeline, while the concentration further away from the pipeline is insufficient, affecting the discharge effect and the operational stability of the bottom feeding device. To address these issues, we propose a high-concentration reaction tower dilution feeding device. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of the present invention, to avoid obscuring the purpose of these documents, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] Therefore, the purpose of this utility model is to provide a high-concentration reaction tower dilution feeding device, which can solve the problem that the existing high-concentration reaction tower dilution method will result in the concentration being too low near the dilution water inlet pipe, while the part far from the pipe will not be diluted sufficiently, affecting the unloading effect and the operational stability of the bottom feeding device.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: a high-concentration reaction tower dilution feeding device, including a transmission base, a transmission shaft extending from the top of the inner cavity of the transmission base, a feeding component at the top of the transmission shaft, a sealing component on the outside of the transmission base, and a dilution water inlet at the top of the inner cavity of the transmission base.

[0007] The feeding assembly includes an intermediate ring fitted onto the top of the drive shaft. Rotary arms are provided on both sides of the intermediate ring. The interiors of the intermediate ring and the rotary arms are hollow and communicate with each other. A blocking plate is provided at the end of each rotary arm away from the intermediate ring. A one-way nozzle is provided on the side wall of the rotary arm. A scraper is provided at the bottom of the rotary arm. A water inlet is provided at the bottom of the intermediate ring.

[0008] Optionally, the sealing assembly includes a dynamic sealing ring, a static sealing ring, a wear-resistant ring, and an annular back pressure airbag. The dynamic sealing ring is located on top of the static sealing ring. The wear-resistant ring and the annular back pressure airbag are located in a groove in the static sealing ring, with the wear-resistant ring on top of the annular back pressure airbag. The bottom of the dynamic sealing ring contacts the top of the wear-resistant ring, and the top of the dynamic sealing ring is connected to the bottom of the intermediate ring. The static sealing ring is located on top of the transmission seat.

[0009] Based on the above technical features, the dynamic sealing ring rotates with the rotation of the intermediate ring, and a static seal is formed between the annular back pressure airbag in the groove of the static sealing ring and the wear-resistant ring. The wear-resistant ring and the dynamic sealing ring that fits against the top form a dynamic seal. The annular back pressure airbag can be inflated to ensure the back pressure, compensate for and eliminate the impact of wear on the wear-resistant ring, fully ensure the long-term reliability of the seal, and also eliminate and reduce the seal failure caused by equipment vibration.

[0010] Optionally, a limiting groove is provided on the static sealing ring, and an anti-rotation screw is provided in the limiting groove, with the anti-rotation screw penetrating the wear-resistant ring.

[0011] Based on the above technical features, the wear-resistant ring can be fixed in the static sealing ring by using anti-rotation screws to prevent the wear-resistant ring from rotating.

[0012] Optionally, the one-way nozzles are all located on the back surface of the slurry as the rotating arm rotates away from the separated slurry surface, and the one-way nozzles are evenly distributed along the back surface of the slurry.

[0013] Based on the above technical features, installing the one-way nozzle on the back slurry surface will reduce the resistance of water spraying, and the sprayed water will spread outward more easily. When the feeding assembly rotates, the dilution water sprayed from the one-way nozzle can be evenly distributed throughout the circumference, improving the uniformity of slurry dilution at the bottom of the reaction tower.

[0014] Optionally, the scraper blades are located at the bottom of the rotary arm and are evenly distributed in an inclined manner, with the innermost scraper blade having an inclination direction opposite to that of the non-innermost scraper blades.

[0015] Based on the above technical features, the uniformly distributed, inclined scraper blades allow adjacent scraper blades to be close together and cross each other, ensuring that the slurry in the entire circumferential direction can be scraped. The inclination direction of the innermost scraper blade is opposite to that of the non-innermost scraper blades, which ensures that when rotating, the scraper blades drive the slurry outside the circumference to move inward and the slurry inside the circumference to move outward, making it easier for the slurry to be discharged from the discharge port in the middle of the bottom of the reaction tower.

[0016] In summary, this utility model has the following beneficial effects:

[0017] This application, through the rational design of the structure in the feeding assembly, adds a one-way nozzle to spray dilution water. By rationally designing and distributing the positions of the one-way nozzles and the scraper, combined with the design of the sealing assembly, it ensures the uniformity, efficiency, and stability of dilution at the bottom of the high-concentration reaction tower, thereby ensuring the high efficiency and stability of unloading at the bottom of the high-concentration reaction tower. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the material feeding assembly structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the sealing component structure of this utility model.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Material feeding assembly; 101. Intermediate ring; 1011. Water inlet; 102. Rotary arm; 103. Blocking plate; 104. One-way nozzle; 105. Scraper blade;

[0024] 2. Sealing components; 201. Dynamic sealing ring; 202. Static sealing ring; 203. Wear-resistant ring; 204. Annular back pressure airbag; 205. Anti-rotation screw; 206. Limiting groove;

[0025] 3. Transmission seat; 301. Dilution water inlet; 4. Transmission shaft; 5. Bottom of reaction tower; 501. Discharge port. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-3 The present invention will be described in further detail below.

[0027] This utility model discloses a dilution feeding device for a high-concentration reaction tower, located at the bottom 5 of the reaction tower. It includes a transmission seat 3 installed at the bottom of the reaction tower bottom 5. A transmission shaft 4 extending from the top is provided within the inner cavity of the transmission seat 3. A feeding assembly 1 is fixedly installed on the top of the transmission shaft 4, and the feeding assembly 1 is located at the bottom of the inner cavity of the reaction tower. A sealing assembly 2 is provided outside the transmission seat 3 for sealing between the reaction tower bottom 5 and the transmission seat 3. A dilution inlet 301 is provided at the top of the inner cavity of the transmission seat 3. (Refer to the attached drawings for details.) Figure 1 .

[0028] Refer to the attached diagram in the instruction manual. Figure 1-2 The feeding assembly 1 includes an intermediate ring 101, which is fixedly sleeved on the top of the drive shaft 4. Rotary arms 102 are provided on both sides of the intermediate ring 101. The interiors of the intermediate ring 101 and the rotary arms 102 are hollow, and the interiors of the intermediate ring 101 and the rotary arms 102 are connected to each other to facilitate the flow of water in the hollow. A blocking plate 103 is provided at the end of each rotary arm 102 away from the intermediate ring 101. The blocking plate 103 not only seals the rotary arm 102, but also acts as a scraper similar to the scraper 105. A one-way nozzle 104 is provided on the side wall of the rotary arm 102, and a scraper 105 is provided at the bottom of the rotary arm 102. The scraper 105 scrapes and agitates the slurry. A water inlet 1011 is provided at the bottom of the intermediate ring 101.

[0029] Refer to the attached diagram in the instruction manual. Figure 1 and 3 The sealing assembly 2 includes a dynamic sealing ring 201, a static sealing ring 202, a wear-resistant ring 203, and an annular back pressure airbag 204. The dynamic sealing ring 201 is located on top of the static sealing ring 202. The wear-resistant ring 203 and the annular back pressure airbag 204 are located in the groove opened in the static sealing ring 202, and the wear-resistant ring 203 is located on top of the annular back pressure airbag 204. The bottom of the dynamic sealing ring 201 is in contact with the top of the wear-resistant ring 203. The top of the dynamic sealing ring 201 is connected to the bottom of the intermediate ring 101. The static sealing ring 202 is located on top of the transmission seat 3. The dynamic sealing ring 201 rotates with the rotation of the intermediate ring 101. A static seal is formed between the annular back pressure airbag 204 and the wear-resistant ring 203 in the groove of the static sealing ring 202. The wear-resistant ring 203 and the dynamic sealing ring 201 that is in contact with the top form a dynamic seal. The annular back pressure airbag 204 can be inflated to ensure the back pressure, compensate for and eliminate the impact of wear on the wear-resistant ring 203, fully ensure the long-term reliability of the seal, and also eliminate and reduce the seal failure caused by equipment vibration.

[0030] Refer to the attached diagram in the instruction manual. Figure 3A limiting groove 206 is provided on the static sealing ring 202, and an anti-rotation screw 205 is provided in the limiting groove 206. The anti-rotation screw 205 passes through the wear-resistant ring 203. The wear-resistant ring 203 is fixed in the static sealing ring 202 by the anti-rotation screw 205, which can prevent the wear-resistant ring 203 from rotating.

[0031] Refer to the attached diagram in the instruction manual. Figure 2 The one-way nozzles 104 are all set on the back slurry surface away from the slurry separation surface when the rotating arm 102 rotates. The one-way nozzles 104 are evenly distributed along the back slurry surface. The installation of the one-way nozzles 104 on the back slurry surface will reduce the resistance of water spraying and make the sprayed water more easily spread outward. When the feeding assembly 1 rotates, the dilution water sprayed from the one-way nozzles 104 can be evenly distributed on the entire circumference, improving the uniformity of slurry dilution at the bottom of the reaction tower.

[0032] Refer to the attached diagram in the instruction manual. Figure 2 The scraper blades 105 are evenly distributed at the bottom of the rotating arm 102 in an inclined manner. The inclination direction of the innermost scraper blade 105 is opposite to that of the non-innermost scraper blade 105. The even distribution of the scraper blades 105 in an inclined manner allows adjacent scraper blades 105 to be close to each other and cross each other, ensuring that the slurry in the entire circumferential direction can be scraped. The inclination direction of the innermost scraper blade 105 is opposite to that of the non-innermost scraper blade 105, which ensures that when rotating, the scraper blade 105 drives the slurry outside the circumference to move inward and the slurry inside the circumference to move outward, making it easier for the slurry to be discharged from the discharge port 501 in the middle of the bottom 5 of the reaction tower.

[0033] Specific working principle:

[0034] Before the slurry in the high-consistency reaction tower needs to be discharged, it needs to be diluted at the bottom 5 of the tower to facilitate discharge from the discharge port 501. Similar to traditional high-consistency reaction towers, a certain amount of dilution water is introduced through the dilution inlet 301. However, this technical solution simultaneously introduces another portion of dilution water through the inlet 1011. This water is then sprayed out by one-way nozzles 104 through the hollow inner cavity of the intermediate ring 101 and the rotating arm 102 to dilute the slurry. The one-way nozzles 104 are all located on the back slurry surface away from the separated slurry surface as the rotating arm 102 rotates, and are evenly distributed along the back slurry surface. The installation of the one-way nozzles 104 on the back slurry surface reduces the resistance to water spraying, making it easier for the sprayed water to diffuse outwards. When the feeding assembly 1 rotates, the dilution water sprayed from the one-way nozzles 104 can be evenly distributed throughout the circumference, improving the uniformity of slurry dilution at the bottom of the reaction tower. The scraper blades 105 are evenly distributed at the bottom of the rotating arm 102 in an inclined manner. The inclination direction of the innermost scraper blade 105 is opposite to that of the non-innermost scraper blades 105. The even distribution of the scraper blades 105 in an inclined manner allows adjacent scraper blades 105 to be close to each other and cross each other, ensuring that the slurry in the entire circumferential direction can be scraped. The inclination direction of the innermost scraper blade 105 is opposite to that of the non-innermost scraper blades 105, which ensures that when rotating, the scraper blades 105 drive the slurry outside the circumference to move inward and drive the slurry inside the circumference to move outward, making it easier for the slurry to be discharged from the discharge port 501 in the middle of the bottom 5 of the reaction tower.

[0035] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A high concentration reaction column dilution and raking device characterized by: The utility model provides a kind of stirring assembly and sealing assembly, including transmission seat (3), the inner cavity of the transmission seat (3) is provided with top protruding transmission shaft (4), the top of the transmission shaft (4) is provided with stirring assembly (1), the outside of the transmission seat (3) is provided with sealing assembly (2), the inner cavity top of the transmission seat (3) is provided with dilution water port (301); The stirring assembly (1) includes middle ring (101), the middle ring (101) is sleeved on the top of transmission shaft (4), both sides of the middle ring (101) are provided with rotary arm (102), the inside of the middle ring (101) and the rotary arm (102) are hollow, and the inside of the middle ring (101) and the rotary arm (102) are communicated, the end of the rotary arm (102) away from the middle ring (101) is provided with baffle (103), the sidewall of the rotary arm (102) is provided with one-way nozzle (104), the bottom of the rotary arm (102) is provided with scraping plate (105), the bottom of the middle ring (101) is provided with water inlet (1011).

2. A dilution and pushing device for a high concentration reaction column according to claim 1, characterized in that: The sealing assembly (2) includes dynamic sealing ring (201), static sealing ring (202), wear ring (203) and annular back pressure air bag (204), the dynamic sealing ring (201) is located on the top of the static sealing ring (202), the wear ring (203) and the annular back pressure air bag (204) are located in the groove of the static sealing ring (202), and the wear ring (203) is located on the top of the annular back pressure air bag (204), the bottom of the dynamic sealing ring (201) is in contact with the top of the wear ring (203), the top of the dynamic sealing ring (201) is connected with the bottom of the middle ring (101), and the static sealing ring (202) is located on the top of the transmission seat (3).

3. A dilution and pushing device for a high concentration reaction column according to claim 2, characterized in that: The static sealing ring (202) is provided with limiting groove (206), the limiting groove (206) is provided with anti-rotation screw (205), and the anti-rotation screw (205) penetrates the wear ring (203).

4. The high concentration reactor column dilution and pusher apparatus of claim 1 wherein: The one-way nozzle (104) is arranged on the back pulp surface of the rotary arm (102) away from the separated pulp surface, and the one-way nozzle (104) is uniformly distributed along the back pulp surface.

5. The high concentration reactor column dilution and pusher apparatus of claim 1 wherein: The scraping plate (105) is arranged on the bottom of the rotary arm (102) in inclined shape and is uniformly distributed, and the inclination direction of the innermost scraping plate (105) is opposite to the inclination direction of the non-innermost scraping plate (105).

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