Esterification tower ester reflux pump

Abstract

The utility model discloses an ester reflux pump of an esterification tower, and belongs to the technical field of reflux pumps. Comprising a base, an air cooler and a heating device are arranged in the base, a controller is arranged on the outer wall of the front portion of the base, a fixing barrel is arranged at the top of the base, a temperature sensor is arranged on the inner wall of the fixing barrel, threaded grooves are formed in the two sides of the fixing barrel, a fixing frame is arranged on the inner wall of the fixing barrel, a clamping sleeve is clamped to the outer wall of the fixing frame, and a motor is arranged on the side wall of the clamping sleeve; the output ends of a plurality of motors are connected with impellers, a plurality of threaded grooves are internally connected with fixed sleeving barrels in a sleeving manner, and the air cooler, the heating device and the temperature sensor are electrically connected with the controller in series, so that the temperature of backflow liquid can be controlled, and the reaction efficiency and the product purity are improved; and the influence on the reaction in the esterification tower caused by too high or too low temperature of the ester compound during reflux is avoided, and when the reflux pump needs to be repaired and maintained, the disassembly is more convenient, so that the working efficiency of repair and maintenance is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of reflux pumps, and more specifically to an ester reflux pump for an esterification tower. Background Art

[0002] The esterification tower is a continuous process equipment, usually made of ceramics, stainless steel and other materials, capable of large-scale esterification reactions. It can continuously add raw materials and solvents to react the reactants in the tower for multiple times, thereby obtaining higher product yields and higher purity. The esterification tower is usually divided into two parts: the reaction tower and the separation tower. The reaction tower is mainly used for reaction, while the separation tower is used to separate the product from the reactants and by-products. The esterification tower is widely used in petrochemical, food processing, bioenergy and other fields.

[0003] The ester reflux pump of the esterification tower is an important equipment used in the esterification reaction process. It is used to reflux the produced ester compounds from the reaction tower to the reactor to achieve the recycling of the reaction materials. The reflux pump in the prior art has a relatively complex structure, and the use effect is not obvious, the fixing method is not firm, and there are certain safety hazards.

[0004] In response to the above problems, application number 201220535782.5, application name is reflux pump, which records a connecting pipe, a water inlet connecting pipe is provided at the bottom of the connecting pipe, the water inlet connecting pipe is provided with evenly distributed water inlet connecting holes, a supporting foot is provided at the upper part of the connecting pipe, a motor seat is provided on the supporting foot, a water inlet is provided at the bottom of the water inlet connecting pipe, a water outlet is provided at the bottom of the water inlet, a pump shaft is provided in the connecting pipe, the bottom of the pump shaft extends to the water outlet, the upper part of the pump shaft extends to the motor seat, a pump coupling is provided at the top of the pump shaft, the lower end of the pump shaft is sleeved with an impeller, the impeller is located in the water inlet, and the bottom of the pump shaft is sleeved with a guide vane body. The reflux pump has a simple structure, high strength, good use effect, extended service life and enhanced safety.

[0005] Although the device has many beneficial effects, the following problems still exist: the existing reflux pump has poor temperature regulation when refluxing the ester compound. In the actual application of esterification tower reflux, the temperature of the ester compound is often easily affected by the external environment or the temperature inside the reaction tower during the reflux process, resulting in the ester compound temperature being too high or too low. Too high a temperature may cause the decomposition of the product or the instability of the reaction, or even cause the reaction to run away. When the temperature of the ester compound is too low, the reaction rate of the ester compound will also be reduced, which causes many inconveniences in the actual use process.

[0006] In addition, the existing reflux pump is rather cumbersome to repair or maintain during use. Personnel need to remove a large number of screws to take out the internal impeller and motor. During installation, a large number of screws are also required to tighten and fix them. During installation, the internal pipes are relatively narrow, which brings great troubles to installation and disassembly. This not only increases the labor intensity of the staff, but also reduces the work efficiency of maintenance.

[0007] In view of this, we propose an esterification tower ester reflux pump. Utility Model Content

[0008] 1. Technical issues to be solved

[0009] The utility model aims to provide an ester reflux pump for an esterification tower, so as to solve the problems of poor temperature regulation and complicated repair and maintenance and disassembly proposed in the above-mentioned background technology.

[0010] 2. Technical solution

[0011] An esterification tower ester reflux pump comprises a base, wherein a cooling fan and a heating device are arranged inside the base, a controller is arranged on the front outer wall of the base, a fixed barrel is arranged on the top of the base, the output ends of the cooling fan and the heating device are connected to the bottom of the fixed barrel, a temperature sensor is arranged on the inner wall of the fixed barrel, threaded grooves are opened on both sides of the fixed barrel, a fixing frame is arranged on the inner wall of the fixed barrel, a clamping sleeve is clamped on the outer wall of the fixing frame, a motor is arranged on the side wall of the clamping sleeve, a plurality of the motor output ends are connected to impellers, a plurality of fixed sleeve barrels are sleeved inside the threaded grooves, and the cooling fan, the heating device and the temperature sensor are electrically connected in series with the controller.

[0012] Preferably, threaded rods are threadedly sleeved on the top and bottom of the fixing frame, multiple ends of the threaded rods are connected to conical blocks, sleeve rods are sleeved on the outer walls of the threaded rods, and limiting rods are arranged at the bottoms of multiple sleeve rods, and circular grooves that penetrate and match the limiting rods are opened on the top and bottom of the fixing frame.

[0013] Preferably, a second cavity is provided inside the fixing frame, a spring is provided on the inner wall of the second cavity, a plurality of ends of the springs are connected to a movable plate, a groove is provided on the rear wall of the movable plate, and a limit block is provided on the front outer wall of the movable plate.

[0014] Preferably, the front and rear outer walls of the clamping sleeve are provided with limiting grooves matching the limiting blocks, and the top and bottom outer walls of the clamping sleeve are provided with limiting circular grooves matching the limiting rods.

[0015] Preferably, a cavity 1 is opened inside the fixed barrel, and through holes 1 are opened on the inner walls on both sides of the cavity 1, and the fixed barrel is made of stainless steel.

[0016] Preferably, a cavity three is opened inside the plurality of the fixed sleeve barrels, and a through hole two having the same size as the through hole one is opened on the inner walls on both sides of the cavity three.

[0017] Preferably, the side walls of the plurality of fixed sleeve barrels are provided with threaded sleeves matching the threaded grooves, and the tops of the plurality of fixed sleeve barrels are also provided with exhaust pipes.

[0018] Preferably, a plurality of the side walls of the fixed sleeve barrels are provided with mounting circular plates, and a plurality of mounting holes are opened on the outer wall of the mounting circular plates.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the utility model has the advantages that: when the ester compounds in the esterification tower are refluxed, the impeller can be driven by a motor to rotate so as to generate negative pressure to extract the ester compounds. During the extraction process, the temperature of the ester compound liquid is monitored by a temperature sensor. When the temperature is too high or too low, the data will be transmitted to the controller. At this time, the controller can be adjusted according to the temperature. When the temperature is too high, the air cooler will be activated to deliver cold air to the internal cavity 1 of the fixed barrel, and through a plurality of through holes 1 and 2, respectively, to the internal cavity 3 of the fixed sleeve barrel, so as to exchange heat and cool the flowing ester compounds. Similarly, when the temperature of the ester compounds is too low, the heating device can be used to transfer hot air to the cavity 1 inside the fixed barrel and the cavity 3 inside the fixed sleeve barrel, so that the flowing ester compounds can be heated. In this way, the temperature of the reflux liquid can be controlled, thereby improving the reaction efficiency and the purity of the product, and avoiding the influence of the reaction inside the esterification tower caused by the reflux temperature of the ester compounds being too high or too low.

[0021] When the reflux pump needs to be repaired and maintained, the connected pipe can be directly disassembled, and then the fixed sleeve barrel can be rotated and taken out, and then multiple threaded rods are rotated to raise the conical block and the limit rod, so that they are respectively disengaged from their respective grooves and the limit circular grooves. At this time, the pressure of the conical block disengaged from the limit block retracts, thereby releasing the limit on the clamping sleeve, and the rising of the limit rod also disengages from the limit of the clamping sleeve. At this time, the motor carrying the impeller can be directly taken out, and the disassembly is more convenient, which effectively improves the work efficiency of its maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the disassembled structure of the fixed barrel of the utility model;

[0024] Figure 3 This is a schematic diagram of the installation structure of the clamping sleeve of the utility model;

[0025] Figure 4 This is a schematic diagram of the installation structure of the fixing frame of the utility model;

[0026] Explanation of the numbers in the figure: 100, base; 110, air cooler; 120, heating device; 130, controller; 200, fixed barrel; 210, cavity one; 220, through hole one; 230, threaded groove; 240, fixed frame; 241, threaded rod; 242, conical block; 243, sleeve rod; 244, limit rod; 245, cavity two; 246, spring; 247, movable plate; 248, limit block; 249, through circular groove; 250, snap sleeve; 251, limit groove; 252, motor; 253, impeller; 260, temperature sensor; 300, fixed sleeve barrel; 310, through hole two; 320, threaded sleeve; 330, cavity three; 340, exhaust pipe; 350, mounting circular plate. DETAILED DESCRIPTION

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0028] In the description of the present invention, "plurality" means two or more than two, unless otherwise clearly and specifically defined.

[0029] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0030] See also Figure 1-4 , the utility model provides a technical solution:

[0031] An esterification tower ester reflux pump includes a base 100, a cooling fan 110 and a heating device 120 are arranged inside the base 100, a controller 130 is arranged on the front outer wall of the base 100, a fixed barrel 200 is arranged on the top of the base 100, the output ends of the cooling fan 110 and the heating device 120 are connected to the bottom of the fixed barrel 200, and a temperature sensor 260 is arranged on the inner wall of the fixed barrel 200;

[0032] In some embodiments: the working principle of the air cooler 410 is based on a refrigeration cycle. The commonly used refrigeration cycle includes four processes: evaporation, compression, condensation and expansion. Through these processes, heat can be transferred from one place to another, thereby generating cold air. The structure generally includes a compressor, a condenser, an expansion valve, an evaporator, a fan and a control system, which facilitates the delivery of cold air to the inside of cavity one 210 and cavity three 330 to cool down the high-temperature ester compound liquid. The heating device 120 has multiple electric heating tubes inside. The heat source generated by the electric heating tubes is driven by the fan and converted into hot air to enter and exit cavity one 210 and cavity three 330 to heat the low-temperature ester compound liquid, so as to better maintain the temperature of the ester compound liquid and avoid the influence of excessively high or low temperature on it. The controller 120 is mainly used to control the temperature inside the cavity 1 210 and the cavity 3 330 to adjust the heat exchange of the ester compound liquid, wherein the temperature sensor 260 can monitor the temperature of the ester compound liquid in real time and transmit the temperature to the controller 120, the temperature can be viewed through the controller 120, and the controller 120 can adjust according to the temperature threshold. The controller 120 is usually composed of an input module, a central processing unit, an output module and a power supply module. When controlling the air cooler 110 and the heating device 120 inside the ester reflux pump, a closed-loop control system based on the temperature sensor 260 can be used, wherein the input module: is used to receive the feedback signal of the temperature sensor, and convert the analog signal into a digital signal for processing by the central processing unit;

[0033] Central Processing Unit (CPU): Based on the temperature signal received by the input module, it is processed through the preset control algorithm to generate a control output signal;

[0034] Output module: controls the working status of the cooling fan and heating device according to the control output signal of the central processor to adjust the temperature of the return liquid;

[0035] Power module: provides stable power supply for the controller 120. In actual applications, the controller may also include components such as a display screen, an operation panel, and a communication interface for displaying and setting control parameters, realizing human-computer interaction and remote monitoring. In addition, the controller 120 usually has functions such as self-diagnosis and fault alarm to ensure safe and reliable operation of the system.

[0036] Threaded grooves 230 are provided on both sides of the fixed barrel 200, a fixed frame 240 is provided on the inner wall of the fixed barrel 200, a clamping sleeve 250 is clamped on the outer wall of the fixed frame 240, a motor 252 is provided on the side wall of the clamping sleeve 250, and a plurality of motors 252 are connected to the output ends of the impellers 253 to facilitate the use of the negative pressure generated by the impellers 253 driven by the motors 252 to absorb and reflux the ester compound liquid, a plurality of threaded grooves 230 are internally sleeved with fixed sleeve barrels 300, and the air cooler 110, the heating device 120 and the temperature sensor 260 are electrically connected in series with the controller 120.

[0037] Specifically, threaded rods 241 are threadedly sleeved on the top and bottom of the fixing frame 240, and conical blocks 242 are connected to the ends of the multiple threaded rods 241. A sleeve rod 243 is sleeved on the outer wall of the threaded rod 241, and a limiting rod 244 is arranged at the bottom of the multiple sleeve rods 243. The top and bottom of the fixing frame 240 are provided with circular grooves 249 that penetrate and match the limiting rod 244.

[0038] In some embodiments, the sleeve rod 243 is rotatably sleeved on the outer wall of the threaded rod 241. When the threaded rod 241 rotates, it can drive the limiting rod 244 to press down so that it can enter the limiting circular groove, and its conical block 242 will simultaneously descend and press against the groove behind the movable plate 247, and guide and slide. When the conical block 242 reaches the groove as a whole, it will drive the spring 246 to stretch, so that it drives the movable plate 247 carrying the limiting block 248 to move horizontally and enter the limiting groove 251, cooperating with the limiting rod 24 4 has a better fixing effect. When disassembling, the two threaded rods 241 can be rotated in opposite directions. At this time, the conical block 242 and the limiting rod 244 rise, so that they are separated from their respective grooves and limiting circular grooves. At this time, the pressure of the conical block 242 separated from the limiting block 248 will retract, thereby releasing the limit of the clamping sleeve 250, and the rising of the limiting rod 244 also separates from the limit of the clamping sleeve 250. At this time, the motor 252 carrying the impeller 253 can be directly taken out, which is convenient for later maintenance.

[0039] Furthermore, a second cavity 245 is provided inside the fixing frame 240 , and a spring 246 is provided on the inner wall of the second cavity 245 . The ends of the plurality of springs 246 are connected to a movable plate 247 . A groove is provided on the rear wall of the movable plate 247 , and a limit block 248 is provided on the front outer wall of the movable plate 247 .

[0040] Furthermore, the front and rear outer walls of the snap-fit ​​sleeve 250 are provided with limiting grooves 251 that match the limiting block 248 , and the top and bottom outer walls of the snap-fit ​​sleeve 250 are provided with limiting circular grooves that match the limiting rod 244 .

[0041] Furthermore, a cavity 210 is provided inside the fixed barrel 200, and through holes 220 are provided on the inner walls on both sides of the cavity 210. The fixed barrel 200 is made of stainless steel to facilitate the transmission of hot air and cold air.

[0042] It is worth noting that a cavity three 330 is opened inside the plurality of fixed sleeve barrels 300, and inner walls on both sides of the cavity three 330 are opened with through holes two 310 of the same size as the through hole one 220, so as to facilitate the transmission of hot air and cold air.

[0043] It is worth noting that the side walls of the multiple fixed sleeve barrels 300 are provided with threaded sleeves 320 matching the threaded grooves 230 , and the tops of the multiple fixed sleeve barrels 300 are also provided with exhaust pipes 340 to facilitate the discharge of the gas after heat exchange.

[0044] In addition, the side walls of the plurality of fixed sleeve barrels 300 are provided with mounting circular plates 350 , and the outer wall of the mounting circular plates 350 is provided with a plurality of mounting holes, which makes it more convenient for personnel to install the return pipe.

[0045] In some embodiments, the power supply used by the device can use an external conventional power supply.

[0046] In addition, the circuits, electronic components and modules involved in the utility model are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by the utility model does not involve improvements to the internal structure and methods.

[0047] Working principle: First, when the ester compounds in the esterification tower are refluxed, the motor 252 can be used to drive the impeller 253 to rotate so as to generate negative pressure to extract the ester compounds. During the extraction process, the temperature sensor 260 is used to monitor the temperature of the ester compound liquid. When the temperature is too high or too low, the data will be transmitted to the controller 130. At this time, the controller 130 can be adjusted according to the temperature. When the temperature is too high, the air cooler 110 will be activated to transport cold air to the fixed barrel 200, and the cold air will be transmitted to the fixed sleeve barrel 300 through multiple through holes 1 220 and through holes 2 310 to exchange heat and cool the flowing ester compounds. Similarly, when the temperature of the ester compound is too low, the heating device can be used to transfer the hot air to the cavity 1 210 and the fixed sleeve barrel 30 inside the fixed barrel 200. 0 is placed in the cavity three 330 inside, so that it can heat up the flowing ester compound. In this way, the temperature of the reflux liquid can be controlled, thereby improving the efficiency of the reaction and the purity of the product. When the reflux pump needs to be repaired and maintained, the connected pipe can be directly disassembled, and then the fixed sleeve barrel 300 is rotated and taken out, and then the multiple threaded rods 241 are rotated to raise the conical block 242 and the limiting rod 244, so that they are respectively separated from their respective grooves and limiting circular grooves. At this time, the pressure of the conical block 242 separated from the limiting block 248 is retracted, thereby releasing the limit on the clamping sleeve 250, and the rise of the limiting rod 244 is also separated from the limit of the clamping sleeve 250. At this time, the motor 252 carrying the impeller 253 can be directly taken out, and the disassembly is more convenient, which effectively improves the work efficiency of its maintenance.

[0048] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An esterification tower ester reflux pump, comprising a base (100), characterized in that: The base (100) is provided with a cooling fan (110) and a heating device (120) inside, a controller (130) is provided on the front outer wall of the base (100), a fixed barrel (200) is provided on the top of the base (100), the output ends of the cooling fan (110) and the heating device (120) are connected to the bottom of the fixed barrel (200), a temperature sensor (260) is provided on the inner wall of the fixed barrel (200), and threaded grooves (230) are provided on both sides of the fixed barrel (200). The inner wall of the fixed barrel (200) is provided with a fixing frame (240), the outer wall of the fixing frame (240) is clamped with a clamping sleeve (250), the side wall of the clamping sleeve (250) is provided with a motor (252), the output ends of the plurality of motors (252) are connected to impellers (253), the interior of the plurality of threaded grooves (230) is sleeved with a fixed sleeve barrel (300), and the air cooler (110), the heating device (120) and the temperature sensor (260) are electrically connected in series with the controller (130).

2. An esterification tower ester reflux pump according to claim 1, characterized in that: The top and bottom of the fixing frame (240) are threadedly sleeved with threaded rods (241), the ends of the plurality of threaded rods (241) are connected with conical blocks (242), the outer walls of the threaded rods (241) are sleeved with sleeve rods (243), the bottoms of the plurality of sleeve rods (243) are provided with limiting rods (244), and the top and bottom of the fixing frame (240) are provided with penetrating circular grooves (249) matching the limiting rods (244).

3. An esterification tower ester reflux pump according to claim 2, characterized in that: A second cavity (245) is provided inside the fixing frame (240), a spring (246) is provided on the inner wall of the second cavity (245), a plurality of ends of the springs (246) are connected to a movable plate (247), a groove is provided on the rear wall of the movable plate (247), and a limit block (248) is provided on the front outer wall of the movable plate (247).

4. An esterification tower ester reflux pump according to claim 3, characterized in that: The front and rear outer walls of the clamping sleeve (250) are provided with limiting grooves (251) matching the limiting block (248), and the top and bottom outer walls of the clamping sleeve (250) are provided with limiting circular grooves matching the limiting rod (244).

5. An esterification tower ester reflux pump according to claim 4, characterized in that: The fixed barrel (200) is provided with a cavity (210) inside, and inner walls on both sides of the cavity (210) are provided with through holes (220), and the fixed barrel (200) is made of stainless steel.

6. An esterification tower ester reflux pump according to claim 5, characterized in that: A cavity three (330) is provided inside the plurality of fixed sleeve barrels (300), and a through hole two (310) having the same size as the through hole one (220) is provided on the inner walls on both sides of the cavity three (330).

7. An esterification tower ester reflux pump according to claim 6, characterized in that: The side walls of the plurality of fixed sleeve barrels (300) are provided with threaded sleeves (320) matching the threaded grooves (230), and the tops of the plurality of fixed sleeve barrels (300) are also provided with exhaust pipes (340).

8. An esterification tower ester reflux pump according to claim 7, characterized in that: The side walls of the plurality of fixed sleeve barrels (300) are provided with mounting circular plates (350), and the outer wall of the mounting circular plates (350) is provided with a plurality of mounting holes.

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