Alkali liquor preparation tank for hydroxypropyl methyl cellulose production

Abstract

The utility model relates to the technical field of hydroxypropyl methyl cellulose production, in particular to an alkali liquor preparation tank for hydroxypropyl methyl cellulose production, which comprises a shell, a feed port is arranged at the top end of the shell, a feed pipe is fixedly connected to the top end of the feed port, and a motor is fixedly connected to the center of the top end of the shell. By arranging components such as a motor, a rotating shaft, a crushing cutter, a stirring plate and a fixing plate, the motor drives the rotating shaft to rotate, the rotating shaft drives the crushing cutter and the stirring plate to rotate, cotton fibers are crushed into powder through the crushing cutter, and alkali liquor and the cotton fibers are driven to rotate through the stirring plate; the contact surface of the cotton fibers and the alkali liquor is greatly increased, the cotton fibers and the alkali liquor are fused more sufficiently, the reaction speed of the cotton fibers is increased, and therefore the problem that the cotton fibers are generally placed in a container filled with the alkali liquor to be soaked during simplified treatment of the cotton fibers is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydroxypropyl methylcellulose production, in particular to an alkali solution preparation tank for hydroxypropyl methylcellulose production. Background Art

[0002] Hydroxypropyl methylcellulose is a white or off-white powder, mainly used as a dispersant in the production of polyvinyl chloride. It is also used as a thickener, stabilizer, emulsifier and film-forming agent in other petrochemical, coatings, building materials, paint strippers, papermaking, cosmetics and other products. The first step in the synthesis of hydroxypropyl methylcellulose is to add natural cellulose to sodium hydroxide for alkaline treatment. In this step, cotton fibers will be decomposed into basic compounds of cellulose, usually reacting at room temperature for 4-6 hours.

[0003] When simplifying the processing of cotton fibers, the cotton fibers are generally placed in a container filled with alkali solution for soaking. The existing configuration container lacks the crushing and stirring function and relies on conventional soaking methods, which is inefficient, time-consuming and labor-intensive. After the cotton fibers are decomposed, the used alkali solution in the existing configuration container will be stored in the cotton fibers and cannot be effectively collected. The alkali solution entrained in the cotton fibers will be wasted in the subsequent processing process, which is very wasteful. Therefore, in view of the above problems, an alkali solution configuration tank for the production of hydroxypropyl methylcellulose is proposed. Utility Model Content

[0004] The utility model aims to provide an alkali solution preparation tank for the production of hydroxypropyl methylcellulose to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A lye preparation tank for the production of hydroxypropyl methylcellulose comprises a shell, a feed port is provided at the top of the shell, a feed pipe is fixedly connected to the top of the feed port, a motor is fixedly connected to the center of the top of the shell, a rotating shaft penetrating the shell is fixedly connected to the output end of the motor, a crushing knife is fixedly connected to the outside of the rotating shaft, a stirring plate is fixedly connected to the bottom end of the rotating shaft, a fixing plate is fixedly connected to the inside of the shell, a first limiting groove is provided on one side of the fixing plate, a second limiting groove is provided on the outside of the shell, and the first limiting groove and the second limiting groove are fixedly connected to the outside of the shell. A sealing layer is connected internally by snap-fitting, a baffle is fixedly connected inside the sealing layer, a handle is fixedly connected to one end of the baffle away from the fixed plate, a supporting leg is fixedly connected to the bottom end of the shell, a bottom end of the supporting leg is fixedly connected to a bottom plate, a hydraulic rod penetrating the shell is fixedly connected to the top end of the bottom plate, an extrusion plate is fixedly connected to the top end of the hydraulic rod, a collecting pipe located between the supporting leg and the hydraulic rod is fixedly connected to the bottom end of the shell, a discharge pipe located below the second limiting groove is provided on the outside of the shell, a sealing cover is spirally connected to one end of the discharge pipe away from the shell.

[0007] Preferably, a water filter port is provided at the top of the extrusion plate, and a filter screen is fixedly connected to the interior of the water filter port.

[0008] Preferably, the water filter port and the filter screen are a group, there are several groups in total, and the surface of the extruded plate is evenly arranged in a matrix.

[0009] Preferably, there are two collecting tubes, which are symmetrically arranged on the surface of the shell.

[0010] Preferably, there are four crushing knives, and two crushing knives form a group, with two groups in total, which are arranged up and down on the surface of the rotating shaft.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. In the utility model, the motor, the rotating shaft, the crushing knife, the stirring plate and the fixed plate are arranged, the rotating shaft is driven to rotate by the motor, the crushing knife and the stirring plate are driven to rotate by the rotating shaft, the cotton fiber is crushed into powder by the crushing knife, the alkali solution and the cotton fiber are driven to rotate by the stirring plate, and the contact surface between the cotton fiber and the alkali solution is greatly increased by crushing and rotating the cotton fiber, so that the cotton fiber and the alkali solution are more fully fused, and the reaction speed of the cotton fiber is improved, thereby solving the problem that when simplifying the treatment of cotton fiber, the cotton fiber is generally placed in a container filled with alkali solution for soaking, the existing configuration container lacks the crushing and stirring function, and relies on conventional soaking means, which is inefficient, time-consuming and labor-intensive;

[0013] 2. In the utility model, components such as a bottom plate, a hydraulic rod, a collecting pipe, an extruding plate, a water filter and a filter screen are provided. The extruding plate is driven to move upward by the provided hydraulic rod, and the cotton cellulose between the fixed plate and the extruding plate is squeezed by the extruding plate. The excess alkali liquid in the cotton cellulose is discharged through the water filter port and the filter screen. The filter screen can prevent the loss of cellulose. The squeezed alkali liquid is collected into a container for the alkali liquid through the collecting pipe for next use, thereby solving the problem that in the existing configuration container, after the cotton fiber is decomposed, the used alkali liquid will be stored in the cotton fiber and cannot be effectively collected, and the alkali liquid entrained in the cotton fiber will be wasted in the subsequent processing process, which is very wasteful. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 For this utility model Figure 1 A schematic diagram of the structure at A;

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model in top view.

[0017] In the figure: 1. outer shell; 2. feed port; 3. feed pipe; 4. motor; 5. rotating shaft; 6. crushing knife; 7. stirring plate; 8. fixing plate; 9. first limiting groove; 10. second limiting groove; 11. baffle; 12. sealing layer; 13. handle; 14. supporting leg; 15. bottom plate; 16. hydraulic rod; 17. collecting pipe; 18. extrusion plate; 19. water filter port; 20. filter screen; 21. discharge pipe; 22. sealing cover. DETAILED DESCRIPTION

[0018] 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.

[0019] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0020] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0021] See also Figure 1-3 , the utility model provides a technical solution:

[0022] A lye preparation tank for the production of hydroxypropyl methylcellulose comprises a shell 1, a feed port 2 is provided at the top of the shell 1, a feed pipe 3 is fixedly connected to the top of the feed port 2, a motor 4 is fixedly connected to the center of the top of the shell 1, a rotating shaft 5 penetrating the shell 1 is fixedly connected to the output end of the motor 4, a crushing knife 6 is fixedly connected to the outside of the rotating shaft 5, a stirring plate 7 is fixedly connected to the bottom end of the rotating shaft 5, a fixing plate 8 is fixedly connected to the inside of the shell 1, a first limiting groove 9 is provided on one side of the fixing plate 8, a second limiting groove 10 is provided on the outside of the shell 1, and a sealing layer 1 is connected to the inside of the first limiting groove 9 and the second limiting groove 10 by clamping. 2. A baffle plate 11 is fixedly connected inside the sealing layer 12, and a handle 13 is fixedly connected to one end of the baffle plate 11 away from the fixed plate 8. A supporting leg 14 is fixedly connected to the bottom end of the shell 1, and a bottom plate 15 is fixedly connected to the bottom end of the supporting leg 14. A hydraulic rod 16 penetrating the shell 1 is fixedly connected to the top end of the bottom plate 15, and an extrusion plate 18 is fixedly connected to the top end of the hydraulic rod 16. A collecting pipe 17 located between the supporting leg 14 and the hydraulic rod 16 is fixedly connected to the bottom end of the shell 1. A discharge pipe 21 located below the second limiting groove 10 is provided on the outside of the shell 1, and a sealing cover 22 is spirally connected to one end of the discharge pipe 21 away from the shell 1.

[0023] A water filter port 19 is provided at the top of the extrusion plate 18, and a filter screen 20 is fixedly connected to the inside of the water filter port 19. The water filter port 19 and the filter screen 20 form a group, and there are several groups in total, and the surface of the extrusion plate 18 is evenly arranged in a matrix. The number of collecting pipes 17 is two, and they are symmetrically arranged on the surface of the outer shell 1. The number of crushing knives 6 is four, and each left and right two form a group, and there are two groups in total, which are arranged up and down on the surface of the rotating shaft 5.

[0024] Workflow: When it is necessary to use the alkali solution preparation tank for the production of hydroxypropyl methylcellulose, firstly, pour cotton fiber through the left feed pipe 3, and pour alkali solution through the right feed pipe 3, so that the alkali solution and cotton fiber are fused in the shell 1, and the motor 4 drives the rotating shaft 5 to rotate, and the rotating shaft 5 drives the crushing knife 6 and the stirring plate 7 to rotate, and the crushing knife 6 is used to grind the cotton fiber into powder, and the stirring plate 7 drives the alkali solution and cotton fiber to rotate. By crushing and rotating the cotton fiber, the contact surface between the cotton fiber and the alkali solution is greatly increased, so that the cotton fiber and the alkali solution are more fully fused, and the reaction speed of the cotton fiber is improved. After the cotton fiber is decomposed into cotton cellulose, the baffle 11 is pulled by the handle 13. The baffle plate 11 and the sealing layer 12 are pulled out from the first limiting groove 9 and the second limiting groove 10, and the cotton cellulose and the alkali solution will fall together through the holes opened on the surface of the fixed plate 8 and fall onto the squeezing plate 18, and the excess alkali solution will be collected through the water filter port 19 and the collecting pipe 17, and the squeezing plate 18 is driven upward by the hydraulic rod 16, and the cotton cellulose between the fixed plate 8 and the squeezing plate 18 is squeezed by the squeezing plate 18, and the excess alkali solution in the cotton cellulose is discharged through the water filter port 19 and the filter screen 20, and the filter screen 20 can prevent the loss of cellulose, and the squeezed alkali solution will be collected into the container for the alkali solution through the collecting pipe 17 for the next use.

[0025] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0026] 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 lye preparation tank for the production of hydroxypropyl methylcellulose, comprising a housing (1), characterized in that: The top of the housing (1) is provided with a feed port (2), the top of the feed port (2) is fixedly connected to a feed pipe (3), the center of the top of the housing (1) is fixedly connected to a motor (4), the output end of the motor (4) is fixedly connected to a rotating shaft (5) penetrating the housing (1), the outer side of the rotating shaft (5) is fixedly connected to a crushing knife (6), the bottom end of the rotating shaft (5) is fixedly connected to a stirring plate (7), the inner side of the housing (1) is fixedly connected to a fixing plate (8), one side of the fixing plate (8) is provided with a first limiting groove (9), the outer side of the housing (1) is provided with a second limiting groove (10), the first limiting groove (9) and the second limiting groove (10) are internally engaged with a sealing layer (12), the inner side of the sealing layer (12) is connected to the inner side of the fixing plate (8), and the fixing plate (8) is fixedly connected to the inner side of the fixing plate (8). The outer shell (1) is fixedly connected to a baffle plate (11), one end of the baffle plate (11) away from the fixing plate (8) is fixedly connected to a handle (13), the bottom end of the shell (1) is fixedly connected to a supporting leg (14), the bottom end of the supporting leg (14) is fixedly connected to a bottom plate (15), the top end of the bottom plate (15) is fixedly connected to a hydraulic rod (16) penetrating the shell (1), the top end of the hydraulic rod (16) is fixedly connected to an extrusion plate (18), the bottom end of the shell (1) is fixedly connected to a collecting pipe (17) located between the supporting leg (14) and the hydraulic rod (16), the outer side of the shell (1) is provided with a discharge pipe (21) located below the second limiting groove (10), and the end of the discharge pipe (21) away from the shell (1) is spirally connected to a sealing cover (22).

2. The alkali solution preparation tank for the production of hydroxypropyl methylcellulose according to claim 1, characterized in that: A water filter opening (19) is provided at the top end of the extrusion plate (18), and a filter screen (20) is fixedly connected to the interior of the water filter opening (19).

3. The alkali solution preparation tank for the production of hydroxypropyl methylcellulose according to claim 2, characterized in that: The water filter port (19) and the filter screen (20) form a group, and there are several groups in total, and the surface of the extrusion plate (18) is evenly arranged in a matrix.

4. The alkali solution preparation tank for the production of hydroxypropyl methylcellulose according to claim 1, characterized in that: The number of the collecting tubes (17) is two, and they are symmetrically arranged on the surface of the outer shell (1).

5. The alkali solution preparation tank for the production of hydroxypropyl methylcellulose according to claim 1, characterized in that: The number of the crushing knives (6) is four, and two on the left and right form a group, with a total of two groups, which are arranged up and down on the surface of the rotating shaft (5).

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