Online triethyl phosphate detection device

Abstract

The utility model relates to an on-line triethyl phosphate detection device, which belongs to the field of triethyl phosphate production and comprises a reaction kettle and a controller fixedly mounted on the front side of the reaction kettle, a stirring mechanism extending into the reaction kettle is arranged outside the reaction kettle, a sampling detection mechanism extending into the reaction kettle is arranged outside the reaction kettle, and the controller is fixedly mounted on the front side of the reaction kettle. The stirring mechanism comprises a speed reducing motor fixedly mounted at the top of the reaction kettle and a rotary drum which is rotationally connected to the interior of the reaction kettle and extends to the exterior of the reaction kettle, and a transmission gear is fixedly connected to an output shaft of the speed reducing motor. According to the triethyl phosphate on-line detection device, a controller starts a gear motor to work to drive a transmission gear to rotate, the transmission gear rotates and meshes to drive a driven gear and a rotary drum to rotate, the rotary drum drives a stirring rod to rotate, and triethyl phosphate mixed liquid in a reaction kettle is fully stirred, so that triethyl phosphate materials are mixed more uniformly; the product quality is ensured, and the advantage of high practicability is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of triethyl phosphate production, in particular to an on-line detection device for triethyl phosphate. Background Technique

[0002] Triethyl phosphate, with the molecular formula C6H 15 O4P and its English name abbreviation TEP, is a colorless transparent liquid that can dissolve in water, ethanol, benzene, aromatic hydrocarbons, esters, chloroform and other organic solvents. It is mainly used as a high-boiling solvent, a plasticizer for rubber and plastics, and can also be used as a halogen-free flame retardant, a raw material for preparing pesticide insecticides, an ethylating agent, etc. The existing preparation processes all involve the esterification reaction of phosphorus oxychloride and excessive absolute ethanol, and then obtain triethyl phosphate through processes such as alcohol removal, neutralization, and rectification.

[0003] In the production process of triethyl phosphate, an on-line detection device for triethyl phosphate is required. In the production process of the existing triethyl phosphate flame retardant, a detection device is needed to detect the flame retardant. Most of the existing detection devices for the production of environmental protection flame retardants require manual sampling, and the sampled liquid is put into the detection equipment for detection. The operation is cumbersome and the detection result has a certain contingency, which is likely to affect the subsequent processing of the flame retardant, seriously affecting the detection quality of triethyl phosphate and not meeting the use requirements. Therefore, an on-line detection device for triethyl phosphate is proposed to solve the problems raised above. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an on-line detection device for triethyl phosphate, which has the advantages of being convenient for detection and strong practicability, and solves the problems that in the production process of the existing triethyl phosphate flame retardant, a detection device is needed to detect the flame retardant, most of the existing detection devices for the production of environmental protection flame retardants require manual sampling, and the sampled liquid is put into the detection equipment for detection. The operation is cumbersome and the detection result has a certain contingency, which is likely to affect the subsequent processing of the flame retardant, seriously affecting the detection quality of triethyl phosphate and not meeting the use requirements.

[0005] To achieve the above object, the utility model provides the following technical scheme: An on-line detection device for triethyl phosphate, comprising a reaction kettle and a controller fixedly installed on the front of the reaction kettle, a stirring mechanism extending to the inside of the reaction kettle is arranged outside the reaction kettle, and a sampling and detection mechanism extending to the inside of the reaction kettle is arranged outside the reaction kettle;

[0006] The stirring mechanism includes a reduction motor fixedly installed at the top of the reaction kettle and a rotating cylinder rotatably connected to the inside of the reaction kettle and extending to the outside thereof. A transmission gear is fixedly connected to the output shaft of the reduction motor, and a driven gear adapted to the transmission gear is fixedly connected to the outside of the rotating cylinder. A number of stirring rods are fixedly connected to the outside of the rotating cylinder;

[0007] The sampling and detection mechanism includes a servo motor fixedly installed at the top of the rotating cylinder and a connecting pipe fixedly communicated with the outside of the rotating cylinder. A rotating shaft extending into the rotating cylinder is fixedly connected to the output shaft of the servo motor, a screw conveyor is fixedly connected to the outside of the rotating shaft, the end of the connecting pipe away from the rotating cylinder is fixedly connected to a collection box, and a densitometer extending into the collection box is fixedly installed at the top of the collection box.

[0008] Furthermore, a motor frame fixedly connected to the top of the reaction kettle is fixedly connected to the outside of the reduction motor, and the reduction motor is electrically connected to the controller.

[0009] Furthermore, the rotating cylinder is a hollow cylinder, and a bearing adapted to the rotating cylinder is fixedly installed inside the reaction kettle.

[0010] Furthermore, the number of the stirring rods is several, and the several stirring rods are symmetrically distributed on the left and right outside the rotating cylinder.

[0011] Furthermore, the rotating shaft is rotatably connected to the inside of the rotating cylinder, the outer diameter of the screw conveyor is adapted to the inner diameter of the rotating cylinder, and the screw conveyor is in contact with the inner wall of the rotating cylinder.

[0012] Furthermore, the collection box is a hollow cuboid, a discharge pipe is fixedly communicated with the outside of the collection box, and the densitometer is electrically connected to the controller.

[0013] Furthermore, a feed hopper is fixedly installed at the top of the reaction kettle, a discharge pipe is fixedly communicated with the bottom of the reaction kettle, and an electromagnetic valve is fixedly installed inside the discharge pipe.

[0014] Compared with the prior art, the present utility model provides an online detection device for triethyl phosphate, which has the following beneficial effects:

[0015] 1. For the online detection device for triethyl phosphate, the reduction motor is started to work by the controller to drive the transmission gear to rotate. The transmission gear rotates and meshes to drive the driven gear and the rotating cylinder to rotate. The rotating cylinder drives the stirring rods to rotate, so as to fully stir the triethyl phosphate mixed solution inside the reaction kettle, make the triethyl phosphate materials mix more evenly, improve the stirring effect, ensure the product quality, and achieve the advantage of strong practicability.

[0016] 2. The triethyl phosphate on-line detection device starts the servo motor to work through the controller. The operation of the servo motor drives the rotating shaft and the screw conveyor to rotate, facilitating the lifting of the triethyl phosphate mixture inside the reaction kettle to the inside of the collection tank. The content of the triethyl phosphate mixture is calculated by the densitometer, facilitating the on-line detection of the product, enabling the timely detection of production anomalies. Additionally, it reduces the manual sampling process and the work of preparing and detecting samples by gas chromatography, achieving the advantage of convenient detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a structural cross-sectional view of the present utility model;

[0018] Figure 2 is a three-dimensional structural view of the stirring mechanism of the present utility model;

[0019] Figure 3 is a front view of the structure of the present utility model.

[0020] In the figure: 1 reaction kettle, 2 controller, 3 stirring mechanism, 31 reduction motor, 32 driving gear, 33 driven gear, 34 rotating cylinder, 35 stirring rod, 4 sampling and detection mechanism, 41 servo motor, 42 rotating shaft, 43 screw conveyor, 44 connecting pipe, 45 collection tank, 46 densitometer, 5 feed hopper, 6 discharge pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1 to 3 , a triethyl phosphate on-line detection device in this embodiment includes a reaction kettle 1 and a controller 2 fixedly installed on the front of the reaction kettle 1. A stirring mechanism 3 extending into its interior is provided outside the reaction kettle 1, and a sampling and detection mechanism 4 extending into its interior is provided outside the reaction kettle 1. The stirring mechanism 3 includes a reduction motor 31 fixedly installed on the top of the reaction kettle 1 and a rotating cylinder 34 rotatably connected to the interior of the reaction kettle 1 and extending outside it. A driving gear 32 is fixedly connected to the output shaft of the reduction motor 31, a driven gear 33 adapted to the driving gear 32 is fixedly connected to the outside of the rotating cylinder 34, and a number of stirring rods 35 are fixedly connected to the outside of the rotating cylinder 34.

[0023] The deceleration motor 31 is started to work by the controller 2, driving the transmission gear 32 to rotate. The rotation of the transmission gear 32 drives the driven gear 33 and the rotating cylinder 34 to rotate. The rotating cylinder 34 drives the stirring rod 35 to rotate, fully stirring the triethyl phosphate mixed liquid inside the reaction kettle 1, making the mixing of the triethyl phosphate material more uniform, improving the stirring effect, ensuring the product quality, and achieving the advantage of strong practicability.

[0024] Among them, the outside of the deceleration motor 31 is fixedly connected with a motor bracket fixedly connected to the top of the reaction kettle 1, and the deceleration motor 31 is electrically connected to the controller 2.

[0025] Specifically, the rotating cylinder 34 is a hollow cylinder, and a bearing adapted to the rotating cylinder 34 is fixedly installed inside the reaction kettle 1. By setting the bearing, the stability of the rotating cylinder 34 during rotation is improved.

[0026] It should be noted that the number of the stirring rods 35 is several, and the several stirring rods 35 are symmetrically distributed on the outside of the rotating cylinder 34 in the left and right directions.

[0027] In this embodiment, the sampling and detection mechanism 4 includes a servo motor 41 fixedly installed on the top of the rotating cylinder 34 and a connecting pipe 44 fixedly communicated with the outside of the rotating cylinder 34. A rotating shaft 42 extending into the rotating cylinder 34 is fixedly connected to the output shaft of the servo motor 41. A screw conveyor 43 is fixedly connected to the outside of the rotating shaft 42. One end of the connecting pipe 44 away from the rotating cylinder 34 is fixedly connected to a collection box 45, and a densitometer 46 extending into the collection box 45 is fixedly installed on the top of the collection box 45. By starting the servo motor 41 to work through the controller 2, the servo motor 41 drives the rotating shaft 42 and the screw conveyor 43 to rotate, facilitating the lifting of the triethyl phosphate mixed liquid inside the reaction kettle 1 into the collection box 45.

[0028] Among them, the rotating shaft 42 is rotatably connected to the inside of the rotating cylinder 34, the outer diameter of the screw conveyor 43 is adapted to the inner diameter of the rotating cylinder 34, and the screw conveyor 43 is in contact with the inner wall of the rotating cylinder 34.

[0029] It should be noted that the collection box 45 is a hollow cuboid, and a discharge pipe is fixedly communicated with the outside of the collection box 45. The densitometer 46 is electrically connected to the controller 2. The model of the densitometer 46 is MPM5300-01. By calculating the content of the triethyl phosphate mixed liquid by the densitometer 46, it is convenient to perform on-line detection of the product and can timely detect abnormal production conditions.

[0030] In this embodiment, a feed hopper 5 is fixedly installed on the top of the reaction kettle 1, a discharge pipe 6 is fixedly communicated with the bottom of the reaction kettle 1, and an electromagnetic valve is fixedly installed inside the discharge pipe 6. The electromagnetic valve is electrically connected to the controller 2.

[0031] The working principle of the above embodiment is:

[0032] During use, the reduction motor 31 is started by the controller 2 to drive the transmission gear 32 to rotate. The rotation of the transmission gear 32 drives the driven gear 33 and the rotating cylinder 34 to rotate through meshing. The rotating cylinder 34 drives the stirring rod 35 to rotate, fully stirring the triethyl phosphate mixture inside the reaction kettle 1, making the mixing of the triethyl phosphate material more uniform. The servo motor 41 is started by the controller 2 to work. The work of the servo motor 41 drives the rotating shaft 42 and the screw conveyor 43 to rotate, lifting the triethyl phosphate mixture inside the reaction kettle 1 into the inside of the collection box 45. The content of the triethyl phosphate mixture is calculated by the densitometer 46 to perform on-line detection of the product, and abnormal production conditions can be detected in a timely manner.

[0033] All the electrical components mentioned in the text are electrically connected to the controller and the power supply. The control mode of the present invention is controlled by the controller. The control circuit of the controller can be realized by simple programming by those skilled in the art. The provision of the power supply also belongs to the common knowledge in the art. And the present invention is mainly used to protect the mechanical device, so the control mode and the circuit connection of the present invention will not be explained in detail. The device is powered by an external power supply.

[0034] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An online detection device for triethyl phosphate, characterized in that: It includes a reaction kettle (1) and a controller (2) fixedly installed on the front of the reaction kettle (1). A stirring mechanism (3) extending into its interior is arranged outside the reaction kettle (1), and a sampling and detection mechanism (4) extending into its interior is arranged outside the reaction kettle (1). The stirring mechanism (3) includes a reduction motor (31) fixedly installed on the top of the reaction kettle (1) and a rotary drum (34) rotatably connected to the interior of the reaction kettle (1) and extending outside it. A transmission gear (32) is fixedly connected to the output shaft of the reduction motor (31). A driven gear (33) adapted to the transmission gear (32) is fixedly connected to the outside of the rotary drum (34). A number of stirring rods (35) are fixedly connected to the outside of the rotary drum (34). The sampling and detection mechanism (4) includes a servo motor (41) fixedly installed on the top of the rotary drum (34) and a connecting pipe (44) fixedly communicated with the outside of the rotary drum (34). A rotating shaft (42) extending into the interior of the rotary drum (34) is fixedly connected to the output shaft of the servo motor (41). A screw conveyor (43) is fixedly connected to the outside of the rotating shaft (42). One end of the connecting pipe (44) far from the rotary drum (34) is fixedly connected to a collection box (45). A densitometer (46) extending into its interior is fixedly installed on the top of the collection box (45).

2. The online detection device for triethyl phosphate according to claim 1, wherein: A motor bracket fixedly connected to the top of the reaction kettle (1) is fixedly connected to the outside of the reduction motor (31). The reduction motor (31) is electrically connected to the controller (2).

3. The online detection device for triethyl phosphate according to claim 1, wherein: The rotary drum (34) is a hollow cylinder, and a bearing adapted to the rotary drum (34) is fixedly installed in the interior of the reaction kettle (1).

4. An online detection device for triethyl phosphate according to claim 1, characterized in that: The number of the stirring rods (35) is several, and several of the stirring rods (35) are symmetrically distributed left and right on the outside of the rotary drum (34).

5. The online detection device for triethyl phosphate according to claim 1, characterized in that: The rotating shaft (42) is rotatably connected to the interior of the rotary drum (34). The outer diameter of the screw conveyor (43) is adapted to the inner diameter of the rotary drum (34), and the screw conveyor (43) is in contact with the inner wall of the rotary drum (34).

6. The on-line detection device for triethyl phosphate according to claim 1, characterized in that: The collection box (45) is a hollow cuboid. A discharge pipe is fixedly communicated with the outside of the collection box (45). The densitometer (46) is electrically connected to the controller (2).

7. An online detection device for triethyl phosphate according to claim 1, characterized in that: A feed hopper (5) is fixedly installed on the top of the reaction kettle (1). A discharge pipe (6) is fixedly communicated with the bottom of the reaction kettle (1). An electromagnetic valve is fixedly installed in the interior of the discharge pipe (6).

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