A production device for sodium carboxymethyl cellulose

Abstract

The invention discloses a sodium carboxymethyl cellulose production device, which relates to the technical field of sodium carboxymethyl cellulose production, and comprises a supporting component, a temperature control component, a stirring component and a filtering component. The invention provides a supporting component, wherein the supporting component comprises a reactor, and the alkalization and etherification processes of the sodium carboxymethyl cellulose raw material are both carried out in the reactor. By providing a temperature control component and a stirring component in the reactor, the temperature control component can realize the control of the temperature in the reactor to avoid the consumption of raw materials by side reactions caused by inappropriate temperature, and the stirring component can realize the stirring of the raw materials, thereby improving the reaction efficiency of the raw materials.

Description

Technical Field

[0001] The invention relates to the technical field of sodium carboxymethyl cellulose production, in particular to a production device for sodium carboxymethyl cellulose. Background Art

[0002] Carboxymethyl cellulose is a water-soluble cellulose ether obtained by chemical modification of natural cellulose. Since the acid structure of carboxymethyl cellulose is not water-soluble, in order to better apply it, its products are generally made into sodium salts. Sodium carboxymethyl cellulose is referred to as CMC-Na. It is a white to light yellow powder, granular or fibrous substance with strong hygroscopicity and is easily soluble in water. When it is neutral or alkaline, the solution is a high viscosity liquid. It is stable to drugs, light and heat. However, the heat resistance is limited to 80°C. When heated for a long time above 80°C, the viscosity decreases and it is insoluble in water. Its relative density is 1.60 and the relative density of the flakes is 1.59. The refractive index is 1.515. It is brown when heated to 190-205°C and carbonized at 235-248°C. Its solubility in water depends on the degree of substitution. It is insoluble in acid and alcohol and does not precipitate when it encounters salt. It is not easy to ferment, has a strong emulsifying power for oils and waxes, and can be stored for a long time.

[0003] Carboxymethyl cellulose is widely used in oil industry drilling mud treatment agent, synthetic detergent, organic detergent, textile printing and dyeing sizing agent, daily chemical product water-soluble colloidal thickener, pharmaceutical industry thickener and emulsifier, food industry thickener, ceramic industry adhesive, industrial paste, paper industry sizing agent, etc. It is used as a flocculant in water treatment, mainly used in wastewater sludge treatment, which can increase the solid content of filter cake.

[0004] Since carboxymethyl cellulose has a wide range of applications, the market demand for carboxymethyl cellulose is relatively large. In the prior art, when preparing carboxymethyl cellulose, a water-based method or a solvent-based method is generally used. However, no matter which method is used, the carboxymethyl cellulose raw material needs to go through two steps of alkalization and etherification. In these two steps, the temperature changes due to the reaction, thus generating side reactions. The side reactions not only consume the raw materials, but also generate side reaction products, affecting the precision of the carboxymethyl cellulose product. Therefore, it is necessary to invent a method and device for producing sodium carboxymethyl cellulose to solve the above problems. Summary of the invention

[0005] The object of the present invention is to provide a method and device for producing sodium carboxymethyl cellulose to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: A production device for sodium carboxymethylcellulose, comprising a support assembly, a temperature control assembly is arranged in the middle of the inner side of the support assembly, a stirring assembly is arranged at the bottom of the inner side of the support assembly, and a filtering assembly is arranged at the upper end of the support assembly;

[0007] The support assembly includes a reaction kettle, both top ends of the two sides of the reaction kettle are fixedly connected with support frames, the support frames are arranged in a "C" shape structure, the middle of the outer side surface of the support frame is movably connected with a bracket through a pin shaft, the temperature control assembly includes a heat conduction pipe, the heat conduction pipe is located inside the reaction kettle, and the stirring assembly includes two stirring rods, and the stirring rods are located inside the reaction kettle;

[0008] The filtering assembly includes a moving frame, a telescopic block is arranged at the bottom of the moving frame, a filter plate is arranged at the bottom of the telescopic block, a baffle is slidably connected to the bottom of the filter plate, a plurality of groups of filter holes are arranged in an array on both the baffle and the filter plate, a chute is opened in the middle of the baffle, a sealing plate is slidably connected in the chute, filter holes are opened on the sealing plate and the filter holes on the sealing plate are staggered with the filter holes on the baffle, an electromagnet is arranged on one side of the sealing plate, and a limiting plate is arranged on the other side.

[0009] Preferably, both ends of the two sides of the two brackets close to each other are fixedly connected with support columns, the middle of the outer side surface of one bracket is fixedly connected with a support seat, the middle of the inner side wall of the support seat is movably connected with a hydraulic rod through a pin shaft, and one end of the hydraulic rod is movably connected with the bottom end of the outer side wall of the reaction kettle through a pin shaft.

[0010] Preferably, a plurality of grooves are opened on the inner wall of the reaction kettle, the grooves are arranged in an arc structure, the plurality of grooves are arranged at equal intervals, communication grooves are opened at the top ends of the inner walls of the two sides of the reaction kettle, and the top ends of the grooves are located in the communication grooves.

[0011] Preferably, a plurality of heat conduction pipes are provided, the plurality of heat conduction pipes correspond to the plurality of grooves one by one, the top ends of the heat conduction pipes are fixedly connected with communication pipes, the communication pipes correspond to the communication grooves, a rotary joint is embedded at one end of the outer side surface of the communication pipe, and the rotary joint penetrates through the through hole at the bottom of the communication groove and extends to the outside of the reaction kettle.

[0012] Preferably, the middle of the lower surface of the reaction kettle is fixedly connected with a water tank, one end of the water tank is fixedly connected with a circulating water pump, the output end of the circulating water pump is fixedly connected with a conduit, one end of the conduit is fixedly connected with one end of the rotary joint, two symmetrically distributed slots are opened at one end of the water tank, a refrigeration pipe and an electric heating pipe are respectively inserted into the two slots, and a sealing gasket is arranged at the notch of the slot.

[0013] Preferably, the two stirring rods are symmetrically distributed, and both ends of the stirring rods are fixedly connected with sealed bearings, one end of the sealed bearings is fixedly connected to the inner wall of the reactor, and the outer side of the stirring rods is fixedly connected with three groups of blades distributed in a circular array, and the three groups of blades are staggered in the horizontal direction. The blades are arranged in a "factory" shape structure, and a guide groove is provided at the bottom end of one side of the blades, and the guide groove is arranged in an arc structure. A drainage groove is provided through the inner wall of the top end of the guide groove, and a plurality of drainage grooves are provided, and the plurality of drainage grooves are evenly spaced.

[0014] Preferably, one end of the stirring rod is fixedly connected to a transmission gear, and the transmission gear is located on the outside of the reactor. The middle part of the outer wall of the reactor is movably connected with a first reversing gear and a second reversing gear through a bearing. The number of teeth of the first reversing gear is greater than that of the second reversing gear. The first reversing gear is meshed with the second reversing gear. The first reversing gear and the second reversing gear are respectively meshed with two transmission gears. The bottom end of the outer wall of the reactor is movably connected with a driving gear through a bearing. The driving gear is meshed with the first reversing gear. The middle part of the outer wall of the reactor is fixedly connected with a gear cover by bolts. The bottom end of the outer wall of the gear cover is fixedly connected with a driving motor, and the output shaft of the driving motor is fixedly connected to the middle part of the outer wall of the driving gear.

[0015] Preferably, the filter assembly also includes a sealing cover, which is located above the reactor and is adapted to the top of the reactor. Two symmetrically distributed movable frames are fixedly connected to the middle of the lower surface of the sealing cover, and the sealing cover is slidably connected to the movable frame.

[0016] Preferably, the cross section of the movable frame is set to an "L"-shaped structure, and the two filter plates are symmetrically distributed.

[0017] Preferably, two feed pipes are embedded in the middle of the upper surface of the sealing cover, a sealing valve is provided in the middle of the feed pipes, the top of the feed pipes is fixedly connected to a feed cover, the feed cover is arranged as a trumpet-shaped structure, and handles are fixedly connected to both ends of the upper surface of the sealing cover.

[0018] Technical effects and advantages of the present invention:

[0019] 1. The present invention provides a supporting component, which includes a reactor. The alkalization and etherification processes of the sodium carboxymethyl cellulose raw material are carried out in the reactor. By arranging a temperature control component and a stirring component in the reactor, the temperature control component can control the temperature in the reactor to avoid the consumption of raw materials due to side reactions caused by inappropriate temperature, and the stirring component can stir the raw materials, thereby improving the reaction efficiency of the raw materials. By arranging a filtering component, the side reaction products in the raw materials can be filtered and separated by the filtering component during the process of the stirring component driving the raw materials to move, thereby facilitating the subsequent drying of the sodium carboxymethyl cellulose solution.

[0020] 2. The present invention provides a stirring assembly, which includes two symmetrically distributed stirring rods. Paddles are provided on the outside of the stirring rods. The paddles can drive the sodium carboxymethyl cellulose raw material to move, thereby achieving stirring of the sodium carboxymethyl cellulose raw material. The two stirring rods are driven by a transmission gear, a reversing gear and a driving gear respectively. The reversing gear is set as two gears with different numbers of teeth. Therefore, the two stirring rods move in opposite directions, and the rotation speeds of the two stirring rods are different. Therefore, the sodium carboxymethyl cellulose raw material will be sheared under the action of the two stirring rods, thereby improving the mixing effect of the sodium carboxymethyl cellulose raw material.

[0021] 3. The present invention provides a filtering component. In the process of driving the sodium carboxymethyl cellulose raw material to move by the stirring component, the sodium carboxymethyl cellulose raw material passes through the filter plate. During this process, the filter plate can filter and separate the side reaction products in the sodium carboxymethyl cellulose raw material solution, and the side reaction products separated by filtration stay above the filter plate, thereby preventing the side reaction products from affecting the drying of the sodium carboxymethyl cellulose solution. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the support assembly structure of the present invention.

[0024] Figure 3 It is a schematic diagram of the positional relationship between the support component and the filter component of the present invention.

[0025] Figure 4 It is a schematic diagram of the structure of the reactor of the present invention.

[0026] Figure 5 It is a schematic diagram of the driving gear structure of the present invention.

[0027] Figure 6 It is a schematic diagram of the rotation direction of the driving gear of the present invention.

[0028] Figure 7 It is a schematic diagram of the structure of the temperature control component of the present invention.

[0029] Figure 8 It is a schematic diagram of the water tank structure of the present invention.

[0030] Fig. 9 It is a schematic diagram of the heat pipe structure of the present invention.

[0031] Fig.10 It is a schematic diagram of the stirring rod structure of the present invention.

[0032] Fig.11 It is a side schematic diagram of the stirring rod structure of the present invention.

[0033] Fig.12 It is a schematic diagram of the blade structure of the present invention.

[0034] Fig.13 It is a schematic diagram of the structure of the filter assembly of the present invention.

[0035] Fig.14 It is a schematic diagram of the filter plate structure of the present invention.

[0036] Fig.15 It is a schematic diagram of the sealing cover structure of the present invention.

[0037] In the figure: 1, support assembly; 2, temperature control assembly; 3, stirring assembly; 4, filtering assembly; 101, reactor; 102, support frame; 103, bracket; 104, support column; 105, support seat; 106, hydraulic rod; 107, groove; 108, connecting groove; 201, heat pipe; 202, connecting pipe; 203, rotary joint; 204, water tank; 205, circulating water pump; 206, conduit; 207, slot; 208, refrigeration pipe; 209, electric heating pipe; 301, stirring rod; 302, seal Sealed bearing; 303, paddle; 304, guide groove; 305, drainage groove; 306, transmission gear; 307, first reversing gear; 308, second reversing gear; 309, driving gear; 310, gear cover; 311, driving motor; 401, sealing cover; 402, moving frame; 403, filter plate; 404, telescopic block; 405, baffle; 406, filter hole; 407, slide groove; 408, sealing plate; 409, electromagnet; 410, feed pipe; 411, feed cover; 412, handle. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Embodiment 1

[0040] The present invention provides a production method of sodium carboxymethyl cellulose, comprising the following steps:

[0041] Step 1, raw material selection: Select cotton linter as the cellulose raw material, select sodium hydroxide solution as the alkalizing agent, and select chloroacetic acid as the etherifying agent. Prepare each raw material according to the ratio for the subsequent production process;

[0042] Step 2, alkalization treatment: Using cotton linter as the raw material, crush it and suspend it in ethanol, add sodium hydroxide solution to prepare alkali cellulose. The cellulose in the cotton linter reacts with the sodium hydroxide solution to obtain alkali cellulose. The temperature should be controlled at 28 - 32 °C during this process;

[0043] Step 3, etherification treatment: Add chloroacetic acid to the alkali cellulose prepared by alkalization and keep stirring. During this process, heat the mixed solution to raise its temperature to 55 °C and keep it at this temperature for 1.5 h;

[0044] Step 4, by - product separation: Stir the mixed preparation and filter and collect the side - reaction products of the solution through a filter screen to obtain a crude solution with higher purity;

[0045] Step 5, drying and crushing: Transfer the solution to a drying chamber. After the solution is completely dried, obtain granular sodium carboxymethyl cellulose, and perform a crushing treatment on the granular sodium carboxymethyl cellulose to obtain the sodium carboxymethyl cellulose product.

[0046] The present invention also provides a device for the production method of sodium carboxymethyl cellulose as shown in Figures 1 to 15 Figure 1, which includes a support assembly 1, a temperature control assembly 2, a stirring assembly 3, and a filtering assembly 4. In the middle of the inner side of the support assembly 1, there is a temperature control assembly 2. At the bottom of the inner side of the support assembly 1, there is a stirring assembly 3. At the upper end of the support assembly 1, there is a filtering assembly 4.

[0047] The support assembly 1 includes a reaction kettle 101. At the top ends on both sides of the reaction kettle 101, there are fixedly connected support frames 102. The support frames 102 are set in a "C" - shaped structure. In the middle of the outer side of the support frame 102, there is a bracket 103 connected by a pin shaft. At both ends of the side of the two brackets 103 close to each other, there are fixedly connected support columns 104. In the middle of the outer side of one bracket 103, there is a support seat 105.

[0048] Specifically, a hydraulic rod 106 is movably connected to the middle part of the inner wall of the support seat 105 through a pin shaft, and one end of the hydraulic rod 106 is movably connected to the bottom end of the outer wall of the reactor 101 through the pin shaft. A triangular structure is formed between the hydraulic rod 106, the support seat 105 and the bracket 103. When the length of the hydraulic rod 106 changes, the triangular structure changes. At this time, the reactor 101 rotates around the pin shaft. At this time, the reactor 101 is tilted, and the material in the reactor 101 can be poured out.

[0049] More specifically, the inner wall of the reactor 101 is provided with a plurality of grooves 107 , which are arranged in an arc-shaped structure and are evenly spaced. The top ends of the inner walls on both sides of the reactor 101 are provided with connecting grooves 108 , and the top ends of the grooves 107 are located in the connecting grooves 108 .

[0050] The temperature control component 2 includes a heat-conducting pipe 201, which is located inside the reactor 101. There are multiple heat-conducting pipes 201, and the multiple heat-conducting pipes 201 correspond one-to-one to the multiple grooves 107. The top of the heat-conducting pipe 201 is fixedly connected with a connecting pipe 202, and the connecting pipe 202 corresponds to the connecting groove 108. A rotating joint 203 is inlaid at one end of the outer side surface of the connecting pipe 202. The rotating joint 203 passes through the through hole at the bottom of the connecting groove 108 and extends to the outside of the reactor 101. The rotating joint 203 can realize the connection between the connecting pipe 202 and the conduit 206.

[0051] Specifically, a water tank 204 is fixedly connected to the middle of the lower surface of the reactor 101, one end of the water tank 204 is fixedly connected to a circulating water pump 205, the output end of the circulating water pump 205 is fixedly connected to a conduit 206, one end of the conduit 206 is fixedly connected to one end of the rotary joint 203, one end of the water tank 204 is provided with two symmetrically distributed slots 207, the two slots 207 are respectively plugged with a cooling pipe 208 and an electric heating pipe 209, the cooling pipe 208 and the electric heating pipe 209 can respectively realize cooling and heating of the water in the water tank 204, and a sealing gasket is provided at the notch of the slot 207.

[0052] The stirring assembly 3 includes two stirring rods 301, which are located inside the reactor 101. The two stirring rods 301 are symmetrically distributed. Both ends of the stirring rods 301 are fixedly connected with sealed bearings 302. One end of the sealed bearing 302 is fixedly connected to the inner wall of the reactor 101. The outer side of the stirring rod 301 is fixedly connected with three groups of paddles 303 distributed in a circular array. The three groups of paddles 303 are staggered in the horizontal direction. The paddles 303 are arranged in a "factory" shape structure. The setting of the "factory" shape structure enables the paddles 303 to generate tangential force on the sodium carboxymethyl cellulose raw material, thereby driving the sodium carboxymethyl cellulose raw material to move.

[0053] Specifically, a guide groove 304 is provided at the bottom end of one side of the blade 303. The guide groove 304 allows the sodium carboxymethyl cellulose raw material to flow while following the movement of the blade 303, thereby reducing the stress on the blade 303 and further extending the service life of the blade 303. The guide groove 304 is arranged in an arc structure, and a drainage groove 305 is provided through the inner wall of the top end of the guide groove 304. A plurality of drainage grooves 305 are arranged, and the plurality of drainage grooves 305 are evenly spaced.

[0054] More specifically, one end of the stirring rod 301 is fixedly connected to a transmission gear 306, and the transmission gear 306 is located on the outside of the reactor 101. The middle part of the outer wall of the reactor 101 is movably connected to the first reversing gear 307 and the second reversing gear 308 through a bearing. The number of teeth of the first reversing gear 307 is greater than that of the second reversing gear 308. The first reversing gear 307 is meshed with the second reversing gear 308. The first reversing gear 307 and the second reversing gear 308 are respectively meshed with the two transmission gears 306. The bottom end of the outer wall of the reactor 101 is movably connected to a driving gear 309 through a bearing. The driving gear 309 is meshed with the first reversing gear 307. The middle part of the outer wall of the reactor 101 is fixedly connected to a gear cover 310 through bolts. The bottom end of the outer wall of the gear cover 310 is fixedly connected to a driving motor 311, and the output shaft of the driving motor 311 is fixedly connected to the middle part of the outer wall of the driving gear 309.

[0055] In addition, the driving gear 309 drives the first reversing gear 307 to rotate, and the first reversing gear 307 drives the second reversing gear 308 to rotate. At the same time, the first reversing gear 307 drives one transmission gear 306 to rotate, and the second reversing gear 308 drives another transmission gear 306 to rotate. At this time, both transmission gears 306 rotate, and the rotation directions of the two transmission gears 306 are opposite, so the two stirring rods 301 rotate in opposite directions.

[0056] At the same time, since the number of teeth of the first reversing gear 307 and the second reversing gear 308 is different, the rotation speeds of the two transmission gears 306 driven by the first reversing gear 307 and the second reversing gear 308 are different, so the two stirring rods 301 produce differential motion, the stirring rod 301 drives the paddle 303 to rotate, and the paddle 303 can drive the sodium carboxymethyl cellulose raw material to move, thereby achieving stirring of the sodium carboxymethyl cellulose raw material, and the paddles 303 on the two stirring rods 301 rotate in opposite directions, so the two paddles 303 can generate shear force on the sodium carboxymethyl cellulose raw material, thereby improving the stirring effect of the sodium carboxymethyl cellulose raw material.

[0057] The filter assembly 4 includes a sealing cover 401, which is located above the reactor 101. The sealing cover 401 is adapted to the top of the reactor 101. Two symmetrically distributed moving frames 402 are fixedly connected to the middle of the lower surface of the sealing cover 401. Two filter plates 403 are arranged below the sealing cover 401. The top of the filter plate 403 is fixedly connected with a telescopic block 404. The telescopic block 404 is plug-connected to the moving frame 402. The two filter plates 403 are symmetrically distributed.

[0058] Specifically, the paddle 303 drives the sodium carboxymethyl cellulose raw material to move, and the sodium carboxymethyl cellulose raw material collides with the filter plate 403 during the process of moving upward. When part of the sodium carboxymethyl cellulose raw material passes through the filter plate 403, the filter holes 406 on the filter plate 403 filter and separate the side reaction products in the sodium carboxymethyl cellulose raw material to obtain a pure sodium carboxymethyl cellulose solution.

[0059] Two feed pipes 410 are embedded in the middle of the upper surface of the sealing cover 401, a sealing valve is provided in the middle of the feed pipe 410, the top of the feed pipe 410 is fixedly connected to a feed cover 411, the feed cover 411 is arranged as a trumpet-shaped structure, and handles 412 are fixedly connected to both ends of the upper surface of the sealing cover 401.

[0060] When the device is used to produce sodium carboxymethyl cellulose, the cotton wool in the sodium carboxymethyl cellulose raw material is first crushed and placed into the reactor 101 in the support component 1, and then a sodium hydroxide solution is added to the reactor 101. At this time, the sodium hydroxide solution alkalizes the cellulose in the cotton wool to obtain alkali cellulose. During this process, the temperature control component 2 can control the temperature of the raw material in the reactor 101, and the stirring component 3 can stir the raw material in the reactor 101.

[0061] After the preparation of alkali cellulose is completed, chloroacetic acid is added to the reactor 101. Chloroacetic acid can etherify the alkali cellulose to obtain a sodium carboxymethyl cellulose solution. During this process, the temperature control component 2 can control the temperature of the raw materials in the reactor 101, and the stirring component 3 can stir the raw materials in the reactor 101. In addition, while the stirring component 3 is stirring the solution, the complex reaction products generated by the side reactions in the solution can be collected by the filtering component 4, thereby facilitating the subsequent drying of the sodium carboxymethyl cellulose solution.

[0062] When the temperature control component 2 controls the temperature in the reactor 101, when the temperature in the reactor 101 is too high and needs to be suppressed, the refrigeration pipe 208 cools the water in the water tank 204, and the cooled water is transported to the heat pipe 201 through the circulating water pump 205. The heat pipe 201 absorbs and takes away the heat of the raw materials in the reactor 101 by heat transfer, thereby achieving the cooling of the raw materials in the reactor 101. When the temperature in the reactor 101 needs to be increased, the refrigeration pipe 208 stops working, and the electric heating pipe 209 heats the water in the water tank 204. The heated water is transported to the heat pipe 201 through the circulating water pump 205, thereby achieving the increase of the temperature in the reactor 101. In this process, the temperature in the reactor 101 can be controlled by installing a temperature sensor in the reactor 101.

[0063] When the stirring assembly 3 stirs the raw materials in the reaction kettle 101, the driving motor 311 drives the driving gear 309 to rotate, the driving gear 309 drives the first reversing gear 307 to rotate, the first reversing gear 307 drives the second reversing gear 308 to rotate, and at the same time, the first reversing gear 307 drives one transmission gear 306 to rotate, and the second reversing gear 308 drives another transmission gear 306 to rotate. At this time, both transmission gears 306 rotate, and the rotation directions of the two transmission gears 306 are opposite, so the two stirring rods 301 rotate in opposite directions. At the same time, due to the first reversing gear 30 7 and the second reversing gear 308 have different numbers of teeth, so the two transmission gears 306 driven by the first reversing gear 307 and the second reversing gear 308 have different rotation speeds, so the two stirring rods 301 produce differential motion, the stirring rod 301 drives the paddle 303 to rotate, and the paddle 303 can drive the sodium carboxymethyl cellulose raw material to move, thereby achieving stirring of the sodium carboxymethyl cellulose raw material, and the paddles 303 on the two stirring rods 301 rotate in opposite directions, so the two paddles 303 can generate shear force on the sodium carboxymethyl cellulose raw material, thereby improving the stirring effect of the sodium carboxymethyl cellulose raw material.

[0064] When the stirring component 3 stirs the sodium carboxymethyl cellulose raw material, the paddle 303 drives the sodium carboxymethyl cellulose raw material to move. The sodium carboxymethyl cellulose raw material collides with the filter plate 403 during the movement upward. When part of the sodium carboxymethyl cellulose raw material passes through the filter plate 403, the filter holes 406 on the filter plate 403 filter and separate the side reaction products in the sodium carboxymethyl cellulose raw material to obtain a pure sodium carboxymethyl cellulose solution.

[0065] Embodiment 2

[0066] In actual use, the operator found that when the side reaction products in the sodium carboxymethyl cellulose raw material were filtered and separated through the filter holes 406 on the filter plate 403, the screened side reaction products would still flow toward the solution and re-mix into the solution after the stirring rod 301 stopped stirring, and could not be effectively screened. Therefore, in order to solve the above technical problems, the device was improved according to the method described in this embodiment.

[0067] A telescopic block 404 is provided at the bottom of each movable frame 402, a filter plate 403 is provided at the bottom of the telescopic block 404, a baffle 405 is slidably connected to the bottom of the filter plate 403, a plurality of groups of filter holes 406 are arranged in an array on the baffle 405 and the filter plate 403, a slide groove 407 is provided in the middle of the baffle 405, a sealing plate 408 is slidably connected in the slide groove 407, the sealing plate 408 is provided with filter holes 406, and the filter holes 406 on the sealing plate 408 are staggered with the filter holes 406 on the baffle 405, an electromagnet 409 is provided on one side of the sealing plate 408, and a limit plate is provided on the other side, and the movable frame 402 can be driven by a motor to slide at the bottom of the sealing cover 401.

[0068] First, when the solution needs to be mixed and stirred, the two electromagnets 409 are controlled to start and generate magnetic repulsion, and the two sealing plates 408 are moved to both sides by the magnetic repulsion, so that the filter holes 406 on the sealing plates 408 are staggered with the filter holes 406 on the baffle plate 405, and the sealing plates 408 are limited by the limiting plates. When the sealing plates 408 contact the limiting plates, the baffle plate 405 is pushed to slide on the filter plate 403 under the action of the magnetic repulsion, so that the baffle plate 405 moves to the top of the stirring rod 301. In this process, the first reversing gear 307 is driven counterclockwise by the driving gear 309, and the first reversing gear 307 drives the second reversing gear 30 8 rotates, and at the same time, the first reversing gear 307 drives one transmission gear 306 to rotate, and the second reversing gear 308 drives the other transmission gear 306 to rotate. At this time, both transmission gears 306 rotate, and the rotation directions of the two transmission gears 306 are opposite, so that the two stirring rods 301 drive the paddles 303 to rotate from both sides to the middle. In this process, since the baffle 405 is located directly above the stirring rod 301, when the stirring rod 301 rotates, part of the solution is sent to the top of the baffle 405 through the paddle 303 and the by-products generated in the stirring process are separated through the setting of the filter hole 406 to obtain a pure sodium carboxymethyl cellulose solution.

[0069] Secondly, when it is necessary to separate the side reaction products in the sodium carboxymethyl cellulose raw material, the filter plate 403 is moved to the two sides of the stirring rod 301 by controlling the moving frame 402 to move away from both sides, and the telescopic block 404 is controlled to drive the filter plate 403 to extend, so that the baffle 405 moves to the bottom of the stirring rod 301. At this time, the two electromagnets 409 are controlled to start and generate magnetic attraction to drive the two sealing plates 408 to move to the middle and fit together, so that the two stirring rods 301 are located in the sealing frame formed by the baffle 405 and the sealing plate 408. In this process, the driving gear 309 is controlled to drive the first reversing gear 307 to rotate clockwise, so that the two The stirring rods 301 drive the blades 303 to rotate from the middle to both sides, and control the hydraulic rod 106 to reciprocate and extend, so that the reactor 101 rotates and tilts around the pin shaft. At this time, the two stirring rods 301 drive the blades 303 to rotate from the middle to both sides, so that the solution in the sealing frame is thrown out to both sides, and the by-products generated in the solution reaction process are separated from the solution through the filter holes 406 set on the filter plate 403 and the sealing plate 408, and the solution is filtered once. At the same time, the telescopic block 404 is controlled to drive the filter plate 403 to reciprocate and extend and shorten, and cooperate with the tilting rotation of the reactor 101 to fully filter the solution.

[0070] Finally, after the filtered solution is discharged from the filter hole 406 on the filter plate 403, it will enter the sealing frame formed between the reactor 101 and the baffle 405 and the by-products in the solution will be filtered for a second time through the continuous shaking of the reactor 101, thereby improving the filtering effect of the device on the solution.

[0071] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A production device for sodium carboxymethyl cellulose, comprising a supporting assembly, characterized in that: A temperature control component is arranged in the middle of the inner side of the support component, a stirring component is arranged at the bottom of the inner side of the support component, and a filtering component is arranged at the upper end of the support component; The support component includes a reaction kettle, both top ends of two sides of the reaction kettle are fixedly connected with support frames, the support frames are arranged in a "C" - shaped structure, the middle of the outer side surface of the support frame is movably connected with a bracket through a pin shaft, the temperature control component includes a heat conduction pipe, the heat conduction pipe is located inside the reaction kettle, the stirring component includes two stirring rods, and the stirring rods are located inside the reaction kettle; The filtering component includes a moving frame, a telescopic block is arranged at the bottom of the moving frame, a filter plate is arranged at the bottom of the telescopic block, a baffle is slidably connected to the bottom of the filter plate, multiple groups of filter holes are arranged in an array on both the baffle and the filter plate, a chute is formed in the middle of the baffle, a sealing plate is slidably connected in the chute, filter holes are formed in the sealing plate and the filter holes on the sealing plate are staggered with the filter holes on the baffle, an electromagnet is arranged on one side of the sealing plate, and a limiting plate is arranged on the other side; The two stirring rods are symmetrically distributed, both ends of the stirring rods are fixedly connected with sealing bearings, one end of the sealing bearings is fixedly connected with the inner wall of the reaction kettle, three groups of blades distributed in an annular array are fixedly connected to the outer side of the stirring rods, the three groups of blades are staggered in the horizontal direction, the blades are arranged in a "Γ" - shaped structure, a diversion groove is formed at the bottom end of one side of the blade, the diversion groove is arranged in an arc - shaped structure, a liquid discharge groove is formed through the inner wall of the top end of the diversion groove, there are multiple liquid discharge grooves, and the multiple liquid discharge grooves are equally spaced; One end of the stirring rod is fixedly connected with a transmission gear, the transmission gear is located outside the reaction kettle, a first reversing gear and a second reversing gear are movably connected to the middle of the outer side wall of the reaction kettle through bearings, the number of teeth of the first reversing gear is greater than that of the second reversing gear, the first reversing gear meshes with the second reversing gear, the first reversing gear and the second reversing gear respectively mesh with the two transmission gears, a driving gear is movably connected to the bottom end of the outer side wall of the reaction kettle through a bearing, the driving gear meshes with the first reversing gear, a gear cover is fixedly connected to the middle of the outer side wall of the reaction kettle through bolts, a driving motor is fixedly connected to the bottom end of the outer side wall of the gear cover, and the output shaft of the driving motor is fixedly connected to the middle of the outer side wall of the driving gear; The filtering component further includes a sealing cover, the sealing cover is located above the reaction kettle, the sealing cover is adapted to the top end of the reaction kettle, two symmetrically distributed moving frames are fixedly connected to the middle of the lower surface of the sealing cover, and the sealing cover is slidably connected with the moving frames.

2. A production device for sodium carboxymethyl cellulose according to claim 1, characterized in that: Both ends of the two brackets close to each other are fixedly connected with support columns, the middle of the outer side surface of one bracket is fixedly connected with a support seat, the middle of the inner side wall of the support seat is movably connected with a hydraulic rod through a pin shaft, and one end of the hydraulic rod is movably connected to the bottom end of the outer side wall of the reaction kettle through a pin shaft.

3. A production device for sodium carboxymethyl cellulose according to claim 1, characterized in that: The inner wall of the reactor is provided with a plurality of grooves, the grooves are arranged in an arc-shaped structure, and the plurality of grooves are distributed at equal intervals. The top ends of the inner walls on both sides of the reactor are provided with connecting grooves, and the top ends of the grooves are located in the connecting grooves.

4. A production device for sodium carboxymethyl cellulose according to claim 1, characterized in that: There are multiple heat-conducting pipes, and the multiple heat-conducting pipes correspond to the multiple grooves one by one. The top of the heat-conducting pipe is fixedly connected with a connecting pipe, and the connecting pipe corresponds to the connecting groove. A rotating joint is inlaid at one end of the outer side surface of the connecting pipe, and the rotating joint passes through the through hole at the bottom of the connecting groove and extends to the outside of the reactor.

5. A production device for sodium carboxymethyl cellulose according to claim 1, characterized in that: A water tank is fixedly connected to the middle of the lower surface of the reactor, one end of the water tank is fixedly connected to a circulating water pump, an output end of the circulating water pump is fixedly connected to a conduit, one end of the conduit is fixedly connected to one end of a rotary joint, one end of the water tank is provided with two symmetrically distributed slots, a refrigeration tube and an electric heating tube are respectively inserted into the two slots, and a sealing gasket is provided at the notch of the slot.

6. A production device for sodium carboxymethyl cellulose according to claim 1, characterized in that: The cross section of the movable frame is set to an "L"-shaped structure, and the two filter plates are symmetrically distributed.

7. A production device for sodium carboxymethyl cellulose according to claim 6, characterized in that: Two feed pipes are embedded in the middle of the upper surface of the sealing cover, a sealing valve is arranged in the middle of the feed pipes, a feed cover is fixedly connected to the top of the feed pipes, the feed cover is arranged as a trumpet-shaped structure, and handles are fixedly connected to both ends of the upper surface of the sealing cover.

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