Spandex polymerization chain extension reactor internally provided with material mixing and wall scraping assembly

Abstract

The utility model discloses a spandex polymerization chain extension reactor internally provided with a material mixing and wall scraping assembly. The spandex polymerization chain extension reactor comprises a reaction cylinder, a front cover, a rear cover and a fixing sleeve, wherein the front cover and the rear cover are rotationally connected with the inner side of the front upper end and the inner side of the rear upper end of the reaction cylinder respectively; a material mixing and wall scraping assembly is arranged on the inner side of the reaction cylinder, the material mixing and wall scraping assembly comprises a spiral conveying rod, a motor, stirring blades and scraping strips, and the spiral conveying rod penetrates through the inner side of the upper end of the reaction cylinder in a clamped mode; a heating structure is arranged in the reaction cylinder, the heating structure comprises a heat conduction sleeve and a heating pipe, and the heat conduction sleeve is fixed on the inner side of the middle part of the reaction cylinder. According to the spandex polymerization chain extension reactor internally provided with the material mixing and wall scraping assembly, the material mixing and wall scraping assembly is arranged, so that material mixing reaction and wall scraping anti-sticking and cleaning are facilitated, raw materials are conveniently heated, the addition amount of amine is conveniently controlled, the reaction effect is good, and water is conveniently introduced to wash the interior of the reactor.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of spandex polymerization production, specifically to a spandex polymerization chain extender reactor with built-in mixing and wall scraping components. BACKGROUND

[0002] Currently, the polymerization method of raw materials in spandex production generally adopts a two-step method of prepolymerization and chain extension polymerization for intermittent polymerization production, and the chain extension polymerization involves moving the prepolymer into the reactor at one time and then adding amine in stages for chain extension.

[0003] A spandex polymerization chain extender reactor is disclosed in Chinese Utility Model Patent No. CN218393673U, which includes a mobile platform and a reaction kettle. The upper four corners of the mobile platform are fixedly connected with fixed rods, and the reaction kettle is fixed between the four fixed rods. A raw material inlet is connected to the upper part of one side of the reaction kettle, and an additive inlet is connected to the side of the reaction kettle away from the raw material inlet. A slow stirring mechanism is provided in the reaction kettle. A horizontally arranged discharge cylinder is connected to the bottom of the reaction kettle, and a discharge mechanism is provided in the discharge cylinder. The slow stirring mechanism can achieve uniform stirring and slow stirring, and the reaction control is more stable. The viscosity control fluctuation is small, and the material uniformity is improved, thereby making the important indicators of the material, such as viscosity and end amino, more stable. The structure is unique, novel, small in size, and high in efficiency. It does not need a cooling jacket and has energy-saving effect and stable discharge.

[0004] However, the existing spandex polymerization chain extender reactor is not convenient for wall scraping inside the reactor, heating of raw materials, and control of amine addition during use, and the reaction effect is limited. In addition, it is not convenient for water flushing inside the reactor. Therefore, we propose a spandex polymerization chain extender reactor with built-in mixing and wall scraping components to solve the above problems. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a spandex polymerization chain extender reactor with built-in mixing and wall scraping components to solve the problem of the existing spandex polymerization chain extender reactor in the above background technology, which is not convenient for wall scraping inside the reactor, heating of raw materials, and control of amine addition during use, and the reaction effect is limited, and it is not convenient for water flushing inside the reactor.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a spandex polymerization chain extender reactor with built-in mixing and wall scraping components, comprising: a reaction cylinder, a front cover and a rear cover rotatably connected to the inner side of the front upper end and the inner side of the rear upper end of the reaction cylinder, and a fixed sleeve fixedly connected to the rear cover;

[0007] Further comprising:

[0008] The inner side of the reaction cylinder is provided with a mixing scraping wall assembly, wherein the mixing scraping wall assembly comprises a spiral conveying rod, a motor, stirring blades and a scraping strip, the spiral conveying rod is engaged through the inner side of the upper end of the reaction cylinder, and the inner side of the upper right end and the inner side of the lower end of the reaction cylinder are respectively embeddedly installed with a controller and a second electromagnetic valve;

[0009] The reaction cylinder is internally provided with a heating structure, wherein the heating structure comprises a heat conduction sleeve and a heating pipe, and the heat conduction sleeve is fixed to the inner side of the middle part of the reaction cylinder.

[0010] The middle part of the rear cover is provided with a controlled quantity feeding structure, wherein the controlled quantity feeding structure comprises a fixing sleeve, a bearing plate, a weighing sensor and a damping rod, and the bearing plate is attached to the fixing sleeve.

[0011] The outer side of the upper end of the reaction cylinder is provided with a water flushing structure, wherein the water flushing structure comprises a multi-way pipe, a spray head, a first electromagnetic valve and a water pipe, the multi-way pipe is wrapped on the outer side of the upper end of the reaction cylinder, and the inner side of the lower rear end of the reaction cylinder is embeddedly installed with a concentration sensor.

[0012] Preferably, the spiral conveying rod is connected with the motor through a shaft coupling, a plurality of stirring blades are fixedly connected outside the spiral conveying rod, and the outer end of the spiral conveying rod and the stirring blades is fixedly connected with the scraping strip.

[0013] Preferably, the outer end of the scraping strip is attached to the reaction cylinder, the heat conduction sleeve and the second electromagnetic valve, and the reaction cylinder and the heat conduction sleeve are internally fixedly installed with the heating pipe.

[0014] Preferably, the inner side of the upper end of the bearing plate is embeddedly installed with the weighing sensor, and the inner side of the middle part of the bearing plate is fixedly connected with the damping rod which is installed through the fixing sleeve.

[0015] Preferably, the inner end of the multi-way pipe is threadedly connected with the spray head, the spray head is nestedly installed in the inner side of the upper end of the reaction cylinder, and the spray head is centrally symmetrically arranged in an inclined manner in the reaction cylinder.

[0016] Preferably, the front end of the multi-way pipe is provided with the water pipe, and the first electromagnetic valve is installed between the multi-way pipe and the water pipe.

[0017] Compared with the prior art, the spandex polymer chain extension reactor with the built-in mixing scraping wall assembly has the advantages that the built-in mixing scraping wall assembly facilitates mixing reaction, scraping wall anti-sticking and cleaning, heating of raw materials, control of the addition amount of amine, good reaction effect, and water flushing of the inside of the reactor.

[0018] 1. The utility model provides a spandex polymerization chain extension reactor that is provided with a reaction cylinder, a spiral conveying rod, a motor and stirring blade, the middle inner side of the reaction cylinder is provided with the spiral conveying rod that is connected with the motor at the upper end, the outer side of the spiral conveying rod is fixedly connected with the stirring blade and scraping strip, and the outer end of the scraping strip is in close contact with the reaction cylinder, the heat conducting sleeve and the second electromagnetic valve, so that the mixing scraping wall assembly is arranged in the spandex polymerization chain extension reactor, so as to facilitate mixing reaction, scraping wall anti-sticking and cleaning.

[0019] 2. The utility model provides a spandex polymerization chain extension reactor that is provided with a reaction cylinder, a heat conducting sleeve, a heating pipe and a rear cover, the middle inner side of the reaction cylinder is fixedly connected with the heat conducting sleeve, the heating pipe is fixedly installed between the reaction cylinder and the heat conducting sleeve, the rear upper end of the reaction cylinder is rotatably connected with the rear cover, a fixing sleeve is fixedly connected on the rear cover, a bearing plate is rotatably connected in the fixing sleeve through a damping rod, and a weighing sensor is embeddedly installed on the inner side of the upper end of the bearing plate, so as to facilitate heating of raw materials and control of the addition amount of amine, so that the reaction effect is good.

[0020] 3. The utility model provides a spandex polymerization chain extension reactor that is provided with a reaction cylinder, a front cover, a rear cover and a multi-way pipe, the front cover and the rear cover are rotatably connected on the reaction cylinder, the upper end outer side of the reaction cylinder is wrapped with the multi-way pipe, a spray head is screwedly connected in the multi-way pipe and is symmetrically embedded and arranged in an inclined mode with the center of the reaction cylinder, and the multi-way pipe is communicated with a water pipe through the first electromagnetic valve, so as to facilitate water flushing of the inside of the reactor. DRAWINGS

[0021] Figure 1 It is a front view three-dimensional structure schematic diagram of the utility model;

[0022] Figure 2 It is a front view cross section structure schematic diagram of the utility model;

[0023] Figure 3 It is a top view structure schematic diagram of the utility model;

[0024] Figure 4 It is a spiral conveying rod and reaction cylinder connection top view cross section structure schematic diagram of the utility model;

[0025] Figure 5 It is a fixed sleeve and rear cover connection side view cross section structure schematic diagram of the utility model.

[0026] In the drawing: 1, reaction cylinder; 2, spiral conveying rod; 3, motor; 4, stirring blade; 5, scraping strip; 6, controller; 7, heat conducting sleeve; 8, heating pipe; 9, front cover; 10, rear cover; 11, fixed sleeve; 12, bearing plate; 13, weighing sensor; 14, damping rod; 15, multi-way pipe; 16, spray head; 17, first electromagnetic valve; 18, water pipe; 19, second electromagnetic valve; 20, concentration sensor. DETAILED DESCRIPTION

[0027] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0028] Please refer to Figures 1-5 The present application provides a technical solution: a spandex polymer chain extension reactor with a built-in mixing and wall scraping assembly, comprising a reaction cylinder 1, a spiral conveying rod 2, a motor 3, a stirring blade 4, a scraping strip 5, a controller 6, a heat conducting sleeve 7, a heating pipe 8, a front cover 9, a rear cover 10, a fixing sleeve 11, a bearing plate 12, a weighing sensor 13, a damping rod 14, a multi-way pipe 15, a spray head 16, a first electromagnetic valve 17, a water pipe 18, a second electromagnetic valve 19, and a concentration sensor 20. The front cover 9 and the rear cover 10 are rotatably connected to the inner side of the front upper end and the rear upper end of the reaction cylinder 1, respectively, and the fixing sleeve 11 is fixedly connected to the rear cover 10. The inner side of the reaction cylinder 1 is provided with a mixing and wall scraping assembly, which comprises the spiral conveying rod 2, the motor 3, the stirring blade 4, and the scraping strip 5. The spiral conveying rod 2 is clamped and penetrates the inner side of the upper end of the reaction cylinder 1. The right upper end and the lower end of the inner side of the reaction cylinder 1 are embeddedly installed with the controller 6 and the second electromagnetic valve 19, respectively. The reaction cylinder 1 is provided with a heating and warming structure, which comprises the heat conducting sleeve 7 and the heating pipe 8. The heat conducting sleeve 7 is fixed to the middle inner side of the reaction cylinder 1. The middle upper part of the rear cover 10 is provided with a controlled quantity feeding structure, which comprises the fixing sleeve 11, the bearing plate 12, the weighing sensor 13, and the damping rod 14. The bearing plate 12 is attached to the inside of the fixing sleeve 11. The upper outer side of the reaction cylinder 1 is provided with a water flushing structure, which comprises the multi-way pipe 15, the spray head 16, the first electromagnetic valve 17, and the water pipe 18. The multi-way pipe 15 is wrapped around the upper outer side of the reaction cylinder 1. The right rear lower end of the inner side of the reaction cylinder 1 is embeddedly installed with the concentration sensor 20. Specific embodiment one

[0029] In order to solve the problem of not being convenient for wall scraping and water flushing in the reactor in the prior art, the present embodiment provides the following technical solution: Figure 1 , Figure 2 , Figure 3 and Figure 4Firstly, the raw materials for spandex polymerization and chain extension can be introduced into the reaction cylinder 1 through the material pipe connected to the left upper end of the inside of the reaction cylinder 1, and then the controller 6 embedded and installed on the right upper end of the inside of the reaction cylinder 1 can be used to control the motor 3 arranged above the reaction cylinder 1 to work, so that the motor 3 drives the spiral conveying rod 2 connected below it through the shaft coupling to rotate under the clamping and limiting of the reaction cylinder 1. Since the outer side of the spiral conveying rod 2 is fixedly connected with a plurality of stirring blades 4, the spiral conveying rod 2 and the stirring blades 4 are fixedly connected with the scraping strip 5 outside, and the scraping strip 5 is connected with the reaction cylinder 1, the heat conducting sleeve 7 and the second electromagnetic valve 19 arranged outside, so that the spiral conveying rod 2 and the motor 3 can stir and mix the raw materials through the work of the motor 3, and the scraping strip 5 can scrape the wall, so that the mixing and scraping wall assembly is arranged in the spandex polymerization and chain extension reactor to facilitate mixing reaction, wall scraping and cleaning.

[0030] After the spandex polymerization and chain extension reaction, the second electromagnetic valve 19 fixedly installed on the lower end of the inside of the reaction cylinder 1 can be operated by the controller 6 to discharge the reaction product. After the reaction product is discharged, the first electromagnetic valve 17 installed between the multi-way pipe 15 and the water pipe 18 can be operated by the controller 6 to connect the multi-way pipe 15 and the water pipe 18. Since the multi-way pipe 15 is wrapped on the outer side of the upper end of the reaction cylinder 1, the multi-way pipe 15 is threadedly connected with the nozzle 16 inside, and the nozzle 16 is symmetrically nested and inclinedly arranged in the upper end of the reaction cylinder 1, so that the water in the water pipe 18 can be introduced into the nozzle 16 through the multi-way pipe 15, and then sprayed out through the nozzle 16, thereby achieving the purpose of water flushing and cleaning the inside of the reactor. Specific embodiment two

[0031] In order to solve the problem that the raw materials are not convenient to heat and control the addition amount of amine, and the reaction effect is limited in the prior art, the technical scheme is as follows: Figure 1 , Figure 2 , Figure 3 and Figure 5In the use of the reactor, the fixed heating pipe 8 between the reaction cylinder 1 and the heat conducting sleeve 7 can be controlled by the controller 6 to work. Since the heat conducting sleeve 7 is fixedly connected to the inner side of the middle part of the reaction cylinder 1, the inner diameter of the heat conducting sleeve 7 is the same as the inner diameter of the upper end of the reaction cylinder 1, so that the raw materials in the reaction cylinder 1 can be heated by the heat conducting sleeve 7 through the heating operation of the heating pipe 8, so as to accelerate the chain extension reaction, and the amine to be added into the reaction cylinder 1 can be poured into the fixed sleeve 11 fixedly connected to the rear cover 10, so as to be inlaid on the weighing sensor 13 inlaid on the inner side of the upper end of the bearing plate 12, so as to sense the amount of the placed amine through the weighing sensor 13, so that the operator can control the amount of the amine according to the demand of the raw materials in the reaction cylinder 1. After the amine is placed in a controlled amount, the damping rod 14 fixedly installed in the bearing plate 12 can be rotated, so that the damping rod 14 drives the fixed sleeve 11 to rotate, so that the amine is added into the reaction cylinder 1, and the concentration of the reaction liquid can be sensed by the concentration sensor 20 inlaid on the inner side of the right rear lower end of the reaction cylinder 1, so that the operator can control the stirring and mixing and heating, so that the reaction effect is good. The above-mentioned electrical elements are all prior art, and will not be described in detail here.

[0032] The contents not described in detail in the specification belong to the prior art known to those skilled in the art, the standard parts used in the utility model can be purchased from the market, and the special-shaped parts can be ordered according to the description and the drawings. The specific connection mode of each part adopts the conventional means such as bolts, rivets and welding in the prior art. The mechanical parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, which will not be described in detail here. The contents not described in detail in the specification belong to the prior art known to those skilled in the art.

[0033] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A spandex polymerization chain extension reactor with a built-in mixing and scraping assembly, comprising: A reaction cylinder (1), a front cover (9) and a rear cover (10) rotatably connected to the inner side of the front upper end and the inner side of the rear upper end of the reaction cylinder (1), and a fixed sleeve (11) fixedly connected to the rear cover (10); It is characterized by further comprising: A mixing scraper assembly is provided on the inner side of the reaction barrel (1), wherein the mixing scraper assembly includes a spiral conveying rod (2), a motor (3), a stirring blade (4) and a scraper (5), and the spiral conveying rod (2) is engaged and penetrates the inner side of the upper end of the reaction barrel (1), and a controller (6) and a second solenoid valve (19) are respectively embedded and installed on the inner side of the right upper end and the inner side of the lower end of the reaction barrel (1); A heating and temperature-raising structure is provided in the reaction cylinder (1), wherein the heating and temperature-raising structure comprises a heat-conducting sleeve (7) and a heating tube (8), and the heat-conducting sleeve (7) is fixed to the inner side of the middle portion of the reaction cylinder (1); A controlled delivery structure is provided above the middle of the rear cover (10), wherein the controlled delivery structure comprises a fixed sleeve (11), a bearing plate (12), a weighing sensor (13) and a damping rod (14), and the bearing plate (12) is fitted in the fixed sleeve (11); A water flushing structure is provided on the outer side of the upper end of the reaction cylinder (1), wherein the water flushing structure comprises a multi-way pipe (15), a nozzle (16), a first solenoid valve (17) and a water pipe (18), and the multi-way pipe (15) is wrapped around the outer side of the upper end of the reaction cylinder (1), and a concentration sensor (20) is embedded and installed on the inner side of the right rear lower end of the reaction cylinder (1).

2. The spandex polymerization chain extension reactor with a built-in mixing and scraping assembly according to claim 1, characterized in that: The spiral conveying rod (2) is connected to a motor (3) via a coupling, and a plurality of stirring blades (4) are fixedly connected to the outside of the spiral conveying rod (2), and scrapers (5) are fixedly connected to the outside of the outer ends of the spiral conveying rod (2) and the stirring blades (4).

3. The spandex polymerization chain extension reactor with a built-in mixing and scraping assembly according to claim 1, characterized in that: The outer end of the scraper (5) is fitted with the reaction tube (1), the heat-conducting sleeve (7) and the second solenoid valve (19), and a heating tube (8) is fixedly installed in the reaction tube (1) and the heat-conducting sleeve (7).

4. The spandex polymerization chain extension reactor with a built-in mixing and scraping assembly according to claim 1, characterized in that: A weighing sensor (13) is embedded and installed on the inner side of the upper end of the bearing plate (12), and a damping rod (14) that penetrates the mounting fixing sleeve (11) is fixedly connected to the inner side of the middle portion of the bearing plate (12).

5. The spandex polymerization chain extension reactor with a built-in mixing and scraping assembly according to claim 1, characterized in that: The inner end of the multi-way tube (15) is threadedly connected to a nozzle (16), and the nozzle (16) is nested and installed on the inner side of the upper end of the reaction cylinder (1), and the nozzle (16) is arranged in an inclined central symmetrical manner in the reaction cylinder (1).

6. The spandex polymerization chain extension reactor with a built-in mixing and scraping assembly according to claim 1, characterized in that: A water pipe (18) is provided at the front end of the multi-way pipe (15), and a first solenoid valve (17) is installed between the multi-way pipe (15) and the water pipe (18).

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