Cellulose ether production equipment

Abstract

The invention discloses cellulose ether production equipment, and relates to the technical field of chemical production. The device comprises a horizontal box body, the upper end of the box body is communicated with a feed port and a liquid inlet, and the lower end of the box body is communicated with a discharge port; a valve is correspondingly mounted in the discharge hole; a crushing and stirring assembly is arranged in the box body; the lower end of the box is connected with a support base; the crushing and stirring assembly comprises two stirring shafts which are correspondingly arranged in the box body along the axial direction of the box body; two ends of the stirring shaft respectively rotationally penetrate through the box body in a sealing manner; a plurality of blades for crushing raw materials are uniformly connected to the stirring shaft; the blades on the two stirring shafts are sequentially distributed in a staggered manner; a power mechanism for driving the two stirring shafts to rotate reversely is arranged outside the box body; a temperature control mechanism for adjusting the temperature of the raw materials is arranged in the crushing and stirring assembly. The device has the beneficial effects that materials can be fully crushed and stirred, the temperature of the materials can be controlled, and the production effect of cellulose ether is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of chemical production, and particularly to a cellulose ether production device. Background Art

[0002] Cellulose ether is a high molecular compound that can dissolve in water, dilute alkali solutions and organic solvents, and has thermoplasticity. It has excellent properties and is widely used in industries such as construction, cement, petroleum, food, textile, detergent, coating, medicine, papermaking and electronic components. Briefly speaking, the production process of cellulose ether is to crush the raw material refined cotton, add various solutions and then carry out physical and chemical treatment.

[0003] During the production process of cellulose ether, the control of temperature is relatively crucial. The traditional temperature control method usually installs heaters and condensers at a certain position inside the box to heat up or cool down the mixed liquid. This temperature control method diffuses heat from the local area to the surrounding areas, which easily causes serious temperature deviation in different parts of the mixed liquid. Especially at the position where the heat initially dissipates, it is very easy to have problems such as too high or too low temperature, resulting in affecting the production effect of cellulose ether. Summary of the Invention

[0004] The technical problem to be solved by the present invention is, aiming at the above-mentioned existing technical deficiencies, to provide a cellulose ether production device that can achieve sufficient crushing and stirring of materials, can control the temperature of materials, and ensure the production effect of cellulose ether.

[0005] The technical solution adopted by the present invention is: to provide a cellulose ether production device, including a horizontal box body, the upper end of the box body is connected with a feed inlet and a liquid inlet, and the lower end is connected with a discharge outlet; a valve is correspondingly installed in the discharge outlet; a crushing and stirring assembly is arranged inside the box body; the lower end of the box body is connected with a support base;

[0006] The crushing and stirring assembly includes two stirring shafts correspondingly arranged inside the box body along the axial direction of the box body; both ends of the stirring shafts respectively rotate and seal through the box body; a plurality of blades for crushing raw materials are evenly connected to the stirring shafts; the blades on the two stirring shafts are staggered in sequence; a power mechanism for driving the two stirring shafts to rotate in opposite directions is arranged outside the box body; a temperature control mechanism for adjusting the temperature of raw materials is arranged inside the crushing and stirring assembly.

[0007] To further optimize the technical solution, a power mechanism of a cellulose ether production device includes driven gears respectively sleeved and fixed on the two stirring shafts, and an installation bracket fixed on the outer wall of the box body; the two driven gears are meshed and connected; a power motor is fixed on the installation bracket; the output end of the power motor is sleeved and fixed with a driving gear; the driving gear is meshed and connected with one of the driven gears.

[0008] To further optimize this technical solution, the stirring shaft of a cellulose ether production device is of a tubular structure; the temperature control mechanism includes a first pipe joint and a second pipe joint that are respectively rotationally connected to both ends of the stirring shaft; the first pipe joint is fixed on the mounting bracket; the second pipe joint is fixed outside the box body; one end of the second pipe joint is connected to the stirring shaft, and a three-way reversing valve is fixed at the other end; one port of the three-way reversing valve is connected to the second pipe joint, and the other two ports are respectively connected to a hot water pipe and a cold water pipe.

[0009] To further optimize this technical solution, a water inlet pipe and a water outlet pipe are sleeved and fixed inside the stirring shaft of a cellulose ether production device; the water inlet pipe is connected to the second pipe joint; the water outlet pipe is connected to the first pipe joint; a serpentine heat dissipation pipe is fixedly penetrated inside the blade; one end of the heat dissipation pipe is connected to the water inlet pipe, and the other end is connected to the water outlet pipe.

[0010] To further optimize this technical solution, a weighing sensor for weighing the feeding amount in the box body is installed on the support base of a cellulose ether production device; electromagnetic valves controlled to open and close according to the weight detected by the weighing sensor are respectively installed in the feeding port and the liquid inlet port.

[0011] To further optimize this technical solution, a temperature sensor for controlling the opening, closing and reversing of the three-way reversing valve is connected to the bottom inside the box body of a cellulose ether production device.

[0012] The beneficial effects of the present invention are as follows:

[0013] The feeding port and the liquid inlet port on the box body can respectively add refined cotton raw materials and various production solutions, so that they can be mixed and reacted inside the box body. A power mechanism for driving the two stirring shafts to rotate in opposite directions is provided outside the box body. The blades on the two stirring shafts are staggered in sequence. Through the reverse rotation of the two stirring shafts, the staggered blades can crush the refined cotton raw materials and can play a stirring role after the solution is added into the box body, improving the production efficiency of cellulose ether. A temperature control mechanism for adjusting the temperature of the raw materials is provided inside the crushing and stirring assembly. The temperature control mechanism is arranged inside the crushing and stirring assembly and can control the temperature of the mixed liquid as the stirring shaft rotates, improving the uniformity of temperature control. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present invention;

[0015] Figure 2 is a schematic internal structure diagram of the stirring shaft;

[0016] Figure 3 is a schematic internal structure diagram of the blade.

[0017] In the figure, 1 is the box body; 2 is the feed inlet; 3 is the liquid inlet; 4 is the discharge outlet; 5 is the valve; 6 is the support base; 7 is the stirring shaft; 8 is the blade; 9 is the driven gear; 10 is the mounting bracket; 11 is the power motor; 12 is the driving gear; 13 is the first pipe joint; 14 is the second pipe joint; 15 is the three-way reversing valve; 16 is the hot water pipe; 17 is the cold water pipe; 18 is the water inlet pipe; 19 is the water outlet pipe; 20 is the heat dissipation pipe; 21 is the weighing sensor; 22 is the solenoid valve; 23 is the temperature sensor. Detailed implementation mode

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation modes.

[0019] As Figure 1 shown, a cellulose ether production device includes a horizontal box body 1. The upper end of the box body 1 is connected to a feed inlet 2 and a liquid inlet 3, and the lower end is connected to a discharge outlet 4. A valve 5 is correspondingly installed in the discharge outlet 4. A crushing and stirring assembly is provided in the box body 1. The lower end of the box body 1 is connected to a support base 6.

[0020] The crushing and stirring assembly includes two stirring shafts 7 correspondingly arranged in the box body 1 along the axial direction of the box body 1. The two ends of the stirring shaft 7 respectively rotate and seal through the box body 1. A plurality of blades 8 for crushing raw materials are evenly connected to the stirring shaft 7. The blades 8 on the two stirring shafts 7 are staggered in sequence. A power mechanism for driving the two stirring shafts 7 to rotate in opposite directions is provided outside the box body 1. A temperature control mechanism for adjusting the temperature of the raw materials is provided in the crushing and stirring assembly.

[0021] The feed inlet 2 and the liquid inlet 3 on the box body 1 can respectively add refined cotton raw materials and various production solutions, so that they can be mixed and reacted in the box body 1. A power mechanism for driving the two stirring shafts 7 to rotate in opposite directions is provided outside the box body 1. The blades 8 on the two stirring shafts 7 are staggered in sequence. Through the reverse rotation of the two stirring shafts 7, the staggered blades 8 can crush the refined cotton raw materials and play a stirring role after adding the solution in the box body 1, improving the production efficiency of cellulose ether. A temperature control mechanism for adjusting the temperature of the raw materials is provided in the crushing and stirring assembly. The temperature control mechanism is provided in the crushing and stirring assembly and can control the temperature of the mixed liquid as the stirring shaft 7 rotates, improving the uniformity of temperature control.

[0022] The feed inlet 2 and the liquid inlet 3 can be fed through an external feeding pipeline system to facilitate automated production. The main reaction carried out by cellulose ether in the box body 1 is the etherification reaction. After the produced materials are discharged through the discharge outlet 4, subsequent purification and separation measures can be carried out. Since the subsequent measures are relatively mature and stable production processes, the subsequent production processes will not be described in detail in this solution.

[0023] As Figure 1As shown in the figure, the power mechanism includes driven gears 9 respectively sleeved and fixed on two stirring shafts 7, and a mounting bracket 10 fixed on the outer wall of the box body 1; the two driven gears 9 are meshed and connected; a power motor 11 is fixed on the mounting bracket 10; the output end of the power motor 11 is sleeved and fixed with a driving gear 12; the driving gear 12 is meshed and connected with one of the driven gears 9.

[0024] The power motor 11 drives the driving gear 12 to rotate, the driving gear 12 drives one of the driven gears 9 to rotate, and the other driven gear 9 can rotate synchronously in the opposite direction, so that the two stirring shafts 7 rotate synchronously in the opposite direction, and the blades 8 can crush and cut the refined cotton raw material and stir the mixed liquid in the box body 1, thereby accelerating the reaction efficiency.

[0025] As Figure 1-2 shown in the figure, the stirring shaft 7 is a tubular structure; the temperature control mechanism includes a first pipe joint 13 and a second pipe joint 14 respectively rotatably communicated with both ends of the stirring shaft 7; the first pipe joint 13 is fixed on the mounting bracket 10; the second pipe joint 14 is fixed outside the box body 1; one end of the second pipe joint 14 is communicated with the stirring shaft 7, and the other end is fixed with a three-way reversing valve 15; one of the ports of the three-way reversing valve 15 is communicated with the second pipe joint 14, and the other two ports are respectively communicated with a hot water pipe 16 and a cold water pipe 17.

[0026] The etherification reaction of cellulose ether involves the alternating heating and cooling of the mixed liquid. Therefore, through the hot water pipe 16 and the cold water pipe 17 (supplied with water through an external water supply system), hot water and cold water can be respectively injected into the stirring shaft 7, and through the contact between the stirring shaft 7 and the mixed liquid, the heating and cooling of the mixed liquid can be realized.

[0027] The three-way reversing valve 15 can switch whether it is the hot water pipe 16 or the cold water pipe 17 that is in communication with the stirring shaft 7, and the first pipe joint 13 can connect to the drainage pipeline, so that hot water or cold water can continuously flow through the stirring shaft 7, improving the efficiency of heat exchange.

[0028] As Figure 3 shown in the figure, a water inlet pipe 18 and a water outlet pipe 19 are sleeved and fixed inside the stirring shaft 7; the water inlet pipe 18 is communicated with the second pipe joint 14; the water outlet pipe 19 is communicated with the first pipe joint 13; a serpentine heat dissipation pipe 20 is fixedly penetrated inside the blade 8; one end of the heat dissipation pipe 20 is communicated with the water inlet pipe 18, and the other end is communicated with the water outlet pipe 19.

[0029] The hot water or cold water injected into the stirring shaft 7 will flow through each heat dissipation pipe 20 in sequence through the water inlet pipe 18, and then converge into the water outlet pipe 19 and be discharged through the first pipe joint 13. Through this process, the range of heat exchange is expanded, so that heat exchange is carried out not only through the stirring shaft 7 and the mixed liquid, but also through the blade 8. Moreover, since the blade 8 continuously stirs the mixed liquid, when the blade 8 also conducts heat exchange, the speed and uniformity of heat exchange can be significantly improved. To ensure the efficiency of heat exchange, the water inlet pipe 18, the water outlet pipe 19 and the heat dissipation pipe 20 can be made of metal materials with high temperature conduction efficiency, such as aluminum pipes and copper pipes.

[0030] As Figure 1 shown, a weighing sensor 21 for weighing the feeding amount in the box body 1 is installed on the support base 6; electromagnetic valves 22 controlled to open and close according to the weight detected by the weighing sensor 21 are respectively installed in the feeding port 2 and the liquid inlet port 3. By weighing with the weighing sensor and respectively controlling the opening and closing of the electromagnetic valve 22, the ratio of the refined cotton raw material and each solution added can be accurately controlled.

[0031] As Figure 1 shown, a temperature sensor 23 for controlling the opening, closing and commutation of the three-way valve 15 is connected to the bottom inside the box body 1. The temperature sensor 23 can monitor the temperature of the mixed liquid in the box body 1 in real time, and control the three-way valve 15 to close or commutate when the temperature reaches the standard, so as to improve the stability and accuracy during the alternating operation of heating and cooling.

[0032] It can be understood that the present invention is described through some embodiments. Those skilled in the art know that without departing from the spirit and scope of the present invention, various changes or equivalent replacements can be made to these features and embodiments. In addition, under the teaching of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A cellulose ether production device, including a horizontal box body (1), characterized in that: The upper end of the box body (1) is connected to a feed inlet (2) and a liquid inlet (3), and the lower end is connected to a discharge outlet (4); a valve (5) is correspondingly installed in the discharge outlet (4); a crushing and stirring assembly is arranged in the box body (1); the lower end of the box body (1) is connected to a support base (6); The crushing and stirring assembly includes two stirring shafts (7) correspondingly arranged in the box body (1) along the axial direction of the box body (1); both ends of the stirring shafts (7) rotatably and sealingly pass through the box body (1); a plurality of blades (8) for crushing raw materials are evenly connected to the stirring shafts (7); the blades (8) on the two stirring shafts (7) are staggered in sequence; a power mechanism for driving the two stirring shafts (7) to rotate in opposite directions is arranged outside the box body (1); a temperature control mechanism for adjusting the temperature of the raw materials is arranged in the crushing and stirring assembly.

2. The cellulose ether production equipment according to claim 1, characterized in that: The power mechanism includes driven gears (9) respectively sleeved and fixed on the two stirring shafts (7), and a mounting bracket (10) fixed on the outer wall of the box body (1); the two driven gears (9) are meshed and connected; a power motor (11) is fixed on the mounting bracket (10); the output end of the power motor (11) is sleeved and fixed with a driving gear (12); the driving gear (12) is meshed and connected with one of the driven gears (9).

3. A cellulose ether production device according to claim 2, characterized in that: The stirring shaft (7) is of a tubular structure; the temperature control mechanism includes a first pipe joint (13) and a second pipe joint (14) respectively rotatably communicated with both ends of the stirring shaft (7); the first pipe joint (13) is fixed on the mounting bracket (10); the second pipe joint (14) is fixed outside the box body (1); one end of the second pipe joint (14) is communicated with the stirring shaft (7), and a three-way reversing valve (15) is fixed at the other end; one port of the three-way reversing valve (15) is communicated with the second pipe joint (14), and the other two ports are respectively communicated with a hot water pipe (16) and a cold water pipe (17).

4. A cellulose ether production device according to claim 3, characterized in that: A water inlet pipe (18) and a water outlet pipe (19) are sleeved and fixed inside the stirring shaft (7); the water inlet pipe (18) is communicated with the second pipe joint (14); the water outlet pipe (19) is communicated with the first pipe joint (13); a serpentine heat dissipation pipe (20) is fixedly penetrated inside the blade (8); one end of the heat dissipation pipe (20) is communicated with the water inlet pipe (18), and the other end is communicated with the water outlet pipe (19).

5. A cellulose ether production device according to claim 1, characterized in that: A weighing sensor (21) for weighing the feeding amount in the box body (1) is installed on the support base (6); electromagnetic valves (22) for controlling opening and closing according to the weight detected by the weighing sensor (21) are respectively installed in the feed inlet (2) and the liquid inlet (3).

6. The cellulose ether production equipment according to claim 3, wherein: A temperature sensor (23) for controlling the opening, closing and reversing of the three-way reversing valve (15) is connected to the inner bottom of the box body (1).

Images