Recovery device for refined cotton alkali leaching black liquor

Abstract

The utility model relates to the technical field of refined cotton alkali leaching, in particular to a refined cotton alkali leaching black liquor recovery device which comprises an alkali leaching pool, supporting frames are fixed to the two sides of the outer wall of the alkali leaching pool, a top plate is fixed to the upper ends of the supporting frames, a cylinder penetrates through the top plate, and the penetrating position of the cylinder and the top plate is reinforced through screws. A piston rod slidably stretches out and draws back in the cylinder body, the end of the piston rod extends downwards and is fixedly provided with connecting tables, a box body is fixed between the two connecting tables, a first net plate is fixedly embedded into the lower end of the box body, and the upper end of the box body is covered with an end cover. Alkali liquor can be added through the alkali leaching pool, refined cotton is stored in the box body, the end cover is used for covering, stable storage of the refined cotton can be guaranteed, the piston rod of the cylinder body extends downwards, the box body can be fed into the alkali liquor for alkali leaching treatment, the first net plate and the second net plate can guarantee passing of the alkali liquor, and the alkali leaching quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of refined cotton alkali soaking, in particular to a refined cotton alkali soaking black liquor recovery device. Background Art

[0002] Refined cotton is a white floc that is uniform and loose, without impurities such as wood chips, bamboo chips, mud, sand, oil, metal objects, etc.

[0003] Its raw material is cotton linter, and its main chemical components are cellulose, lignin and hemicellulose. It is composed of three elements: carbon, hydrogen and oxygen.

[0004] Refined cotton is non-toxic, odorless and easy to absorb water. It is the main material for manufacturing ether cellulose (such as CMC, HEC, HPMC, MC, etc.), nitrocellulose (nitrocellulose) and cellulose acetate. It is widely used in many fields such as food, medicine, daily chemicals, plastics, electronics, papermaking, metallurgy, aerospace, etc.

[0005] Refined cotton alkali soaking: Cotton linters contain substances such as oleagins, lignans, fats and waxes. Using caustic soda as a cooking aid can cause saponification and emulsification reactions with the substances contained in the cotton linters to achieve the purpose of removing non-cellulose. Therefore, it is very important that the caustic soda cooking aid fully and evenly penetrates into the cotton linters fibers.

[0006] At present, when refined cotton is soaked in alkali, the black liquor of the soaking needs to be recovered or recycled after a single use in order to avoid waste. However, during the soaking, impurities carried by the refined cotton will be mixed into the black liquor of the soaking. If the impurities continue to accumulate, the quality of the soaking will be greatly reduced. Therefore, the black liquor of the soaking needs to be effectively filtered and recovered. Utility Model Content

[0007] The utility model aims to provide a device for recovering black liquor used for alkali soaking of refined cotton, so as to solve the problem of filtering and recovering the black liquor used for alkali soaking of refined cotton.

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for recovering refined cotton alkali-soaked black liquor, comprising an alkali-soaking tank, support frames are fixed on both sides of the outer wall of the alkali-soaking tank, a top plate is fixed on the upper end of the support frame, a cylinder body penetrates the top plate, the penetration position between the cylinder body and the top plate is reinforced with screws, a piston rod is slidably and retractably arranged in the cylinder body, the end of the piston rod extends downward and is fixedly installed with a connecting platform, a box body is fixed between the two connecting platforms, a first mesh plate is fixedly embedded in the lower end of the box body, the upper end of the box body is covered with an end cover, and a second mesh plate is fixedly embedded in the middle position of the end cover.

[0009] Preferably, threaded columns are fixed on both sides of the upper end surface of the box body, and built-in sleeves that slide through the threaded columns are fixedly embedded at both ends of the end cover.

[0010] Preferably, a threaded cap is threadedly arranged on the threaded column, and the threaded cap is arranged in close contact with the end cover.

[0011] Preferably, a liquid inlet interface is fixedly embedded on one side wall of the alkali immersion tank, and a first butterfly valve is embedded and installed on the liquid inlet interface.

[0012] Preferably, the inner lower end of the alkali immersion tank is a conical surface, a waste discharge interface is fixedly embedded in the bottom of the conical surface, and a second butterfly valve is embedded and installed on the waste discharge interface.

[0013] Preferably, a liquid outlet interface is fixedly embedded on the other side wall of the alkali immersion tank, and a third butterfly valve is embedded and installed on the liquid outlet interface.

[0014] Preferably, a cylinder is inserted into the inner wall of the liquid outlet interface, and limit blocks distributed up and down are fixed on the inner wall of the liquid outlet interface. The limit blocks are tightly arranged against the end face of the cylinder, an external thread is arranged on the outer wall of the cylinder, and an internal thread is arranged on the inner wall of the liquid outlet interface, and the internal thread and the external thread are connected to each other through threads.

[0015] Preferably, a filter screen made of non-woven fabric material is fixedly embedded in one side of the inner wall of the cylinder, and handles are fixed at both upper and lower ends of the inner wall of the cylinder.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model can add alkali solution through the alkali immersion pool, store refined cotton in the box, cover it with the end cover, and ensure the stable storage of the refined cotton. The piston rod of the cylinder body extends downward to send the box into the alkali solution for alkali immersion treatment. The first mesh plate and the second mesh plate can ensure the passage of the alkali solution to ensure the quality of alkali immersion.

[0018] 2. When the utility model recovers alkali solution, the third butterfly valve is opened so that the alkali solution can be discharged from the liquid outlet interface, and the impurities can be filtered through the filter screen inside the butterfly valve, thereby ensuring the quality of alkali solution recovery. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0020] Figure 2 It is an enlarged schematic diagram of point a of the utility model;

[0021] Figure 3 It is a schematic diagram of the internal structure of the liquid outlet interface of the utility model.

[0022] In the figure: 1. alkali immersion tank; 11. support frame; 12. top plate; 13. cylinder body; 14. connecting platform; 15. box body; 16. first mesh plate; 17. end cover; 18. second mesh plate; 2. built-in sleeve; 21. threaded column; 22. threaded cap; 3. liquid inlet interface; 31. first butterfly valve; 4. waste discharge interface; 41. second butterfly valve; 5. liquid outlet interface; 51. third butterfly valve; 52. cylinder; 53. limit block; 54. internal thread; 55. external thread; 56. filter screen; 57. handle. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example I

[0025] See also Figure 1-3 A device for recovering black liquor from alkali soaking of refined cotton comprises an alkali soaking tank 1. Support frames 11 are fixed on both sides of the outer wall of the alkali soaking tank 1. A top plate 12 is fixed on the upper end of the support frame 11. A cylinder body 13 penetrates the top plate 12. The penetration position between the cylinder body 13 and the top plate 12 is reinforced by screws. A piston rod is slidably retracted in the cylinder body 13. The end of the piston rod extends downward and is fixedly installed with a connecting platform 14. A box body 15 is fixed between the two connecting platforms 14. A first mesh plate 16 is fixedly embedded in the lower end of the box body 15. The upper end of the box body 15 is covered with an end cover 17. A second mesh plate 18 is fixedly embedded in the middle position of the end cover 17.

[0026] Furthermore, threaded columns 21 are fixed on both sides of the upper end surface of the box body 15, and both ends of the end cover 17 are fixedly embedded with built-in sleeves 2 that slide through the threaded columns 21, so that the box body 15 and the end cover 17 can be quickly positioned and docked.

[0027] Furthermore, a threaded cap 22 is threadedly arranged on the threaded column 21 , and the threaded cap 22 is arranged in close contact with the end cover 17 . The threaded cap 22 and the threaded column 21 are threadedly connected to each other, so that the box body 15 and the end cover 17 can be installed and fixed.

[0028] Furthermore, a liquid inlet interface 3 is fixedly embedded on one side wall of the alkali soaking tank 1, and a first butterfly valve 31 is embedded and installed on the liquid inlet interface 3, so that alkali solution can be introduced into the alkali soaking tank 1 from the outside for alkali soaking processing of refined cotton.

[0029] Furthermore, the lower end of the interior of the alkali immersion tank 1 is a cone, and a waste discharge interface 4 is fixedly embedded in the bottom of the cone. A second butterfly valve 41 is embedded and installed on the waste discharge interface 4, which can collect and treat the alkali solution and waste materials remaining precipitated at the bottom at the same time.

[0030] Furthermore, a liquid outlet interface 5 is fixedly embedded on the other side wall of the alkali soaking tank 1, and a third butterfly valve 51 is embedded and installed on the liquid outlet interface 5, so that the alkali solution can be recovered after the alkali soaking is completed.

[0031] Furthermore, a cylinder 52 is inserted into the inner wall of the liquid outlet interface 5, and limit blocks 53 distributed up and down are fixed on the inner wall of the liquid outlet interface 5. The limit blocks 53 are tightly arranged on the end face of the cylinder 52. An external thread 55 is arranged on the outer wall of the cylinder 52, and an internal thread 54 is arranged on the inner wall of the liquid outlet interface 5. The internal thread 54 and the external thread 55 are threadedly connected to each other, which can facilitate the assembly and disassembly of the filter 56 and the regular cleaning or replacement of the filter 56.

[0032] Furthermore, a filter screen 56 made of non-woven fabric is fixedly embedded in one side of the inner wall of the cylinder 52, and handles 57 are fixed at both upper and lower ends of the inner wall of the cylinder 52, which can filter particulate impurities in the alkali solution when the alkali solution is recovered. The filter screen 56 is made of alkali-resistant non-woven fabric.

[0033] When this embodiment is in use: when it is necessary to carry out alkali dipping processing of refined cotton, first open the first butterfly valve 31 through the liquid inlet interface 3, so that the alkali solution can be sent into the alkali dipping tank 1, then put the refined cotton into the box body 15, and cover the end cover 17 on the box body 15 to ensure the stable storage of the refined cotton. At this time, the threaded column 21 passes through the built-in sleeve 2 to ensure the stable placement of the box body 15 and the end cover 17. The box body 15 and the end cover 17 can be installed and fixed by threading the threaded cap 22 and the threaded column 21. The piston rod of the cylinder body 13 extends downward to sink the box body 15 with the refined cotton into the alkali solution. The first mesh plate 16 and the second mesh plate 18 can prevent the refined cotton from leaking out of a large area during processing.

[0034] After the soaking is completed, the box 15 can be moved out of the alkali soaking tank 1. When the alkali solution needs to be recovered, the third butterfly valve 51 is opened and the alkali solution can be discharged through the liquid outlet interface 5. Since the bottom of the alkali soaking tank 1 is a conical structure, a part of the bottom sediment can remain to improve the recovery quality. After entering the liquid outlet interface 5, it is filtered through the filter screen 56 to improve the purity of the recovered alkali solution. Finally, when the bottom liquid remaining in the alkali soaking tank 1 needs to be discharged, the second butterfly valve 41 is opened, and the alkali soaking tank 1 is flushed and discharged by flushing clean water from the outside while cooperating with the waste discharge interface 4.

[0035] When the filter screen 56 needs to be replaced or cleaned regularly, the handle 57 is held to drive the cylinder 52 to rotate, and the cylinder 52 and the liquid outlet interface 5 can be separated by the mutual threading movement of the internal thread 54 and the external thread 55.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for recovering black liquor from alkali soaking of refined cotton, comprising an alkali soaking tank (1), characterized in that: Support frames (11) are fixed on both sides of the outer wall of the alkali soaking tank (1), a top plate (12) is fixed on the upper end of the support frame (11), a cylinder body (13) penetrates the top plate (12), the penetration position between the cylinder body (13) and the top plate (12) is reinforced by screws, a piston rod is slidably retracted in the cylinder body (13), the end of the piston rod extends downward and is fixedly installed with a connection platform (14), a box body (15) is fixed between the two connection platforms (14), and the box body (15) is connected to the top plate (12). 5) is fixedly embedded with a first mesh plate (16), the upper end of the box body (15) is covered with an end cover (17), the middle position of the end cover (17) is fixedly embedded with a second mesh plate (18), both sides of the upper end surface of the box body (15) are fixed with threaded columns (21), both ends of the end cover (17) are fixedly embedded with built-in sleeves (2) that slide through the threaded columns (21), the threaded columns (21) are threadedly provided with threaded caps (22), and the threaded caps (22) are connected to the end cover (17). The alkali immersion tank (1) is arranged in close contact with the alkali immersion tank. A liquid inlet interface (3) is fixedly embedded on one side wall of the alkali immersion tank (1). A first butterfly valve (31) is embedded and installed on the liquid inlet interface (3). The lower end of the interior of the alkali immersion tank (1) is a conical surface. A waste discharge interface (4) is fixedly embedded at the bottom of the conical surface. A second butterfly valve (41) is embedded and installed on the waste discharge interface (4). A liquid outlet interface (5) is fixedly embedded on the other side wall of the alkali immersion tank (1). A third butterfly valve (51) is embedded and installed on the liquid outlet interface (5). A cylinder (52) is inserted into the inner wall of the port (5), and upper and lower limit blocks (53) are fixed on the inner wall of the liquid outlet interface (5), the limit blocks (53) are tightly arranged with the end surface of the cylinder (52), an outer thread (55) is arranged on the outer wall of the cylinder (52), and an inner thread (54) is arranged on the inner wall of the liquid outlet interface (5), a filter screen (56) made of non-woven fabric material is fixedly embedded on one side of the inner wall of the cylinder (52), and handles (57) are fixed on the upper and lower ends of the inner wall of the cylinder (52).

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