Automatic-blanking batching kettle for production of carbamate

Abstract

The invention provides an automatic blanking batching kettle for carbamate production, which comprises a kettle body, the top of the kettle body is correspondingly provided with a liquid batching cylinder and a solid batching cylinder, the liquid batching cylinder is internally and correspondingly provided with a liquid feeding pipe, the top of the liquid feeding pipe penetrates through the liquid batching cylinder and then is correspondingly provided with a liquid feeding hopper, and the solid batching cylinder is internally and correspondingly provided with a liquid discharging pipe. The bottom of the liquid feeding pipe is communicated with the interior of the kettle body, a first control valve is correspondingly mounted at the bottom of the liquid feeding pipe, and the liquid storage amount of a liquid storage cavity in the liquid feeding pipe is adjustable; the bottom of the solid batching barrel is communicated with the interior of the kettle body, a conical hopper is correspondingly arranged at the top of the solid batching barrel, a second control valve is correspondingly mounted on a discharging pipe at the bottom of the conical hopper in the solid batching barrel, and a round material collecting plate driven to rotate is correspondingly arranged below the discharging pipe in the solid batching barrel. The device can realize batching and automatic blanking of methanol and urea, and is ingenious in overall structural design, very flexible and convenient to use and operate and high in practicability.

Description

Technical Field

[0001] The invention belongs to the technical field of batching kettles, and in particular relates to a batching kettle for automatic unloading of carbamate production. Background Art

[0002] Carbamate is a compound in which an amino group or an amine group is directly connected to a carbonyl group of a formate ester, and can also be regarded as a monoester monoamide of carbonic acid. Carbamate is an important organic synthesis reagent and a raw material for manufacturing medicines. Carbamate compounds have a wide range of uses and can be used as pesticides, medicines, synthetic resin modification, and intermediates for organic synthesis.

[0003] Considering the manufacturing cost and other aspects, the main method commonly used in factories for producing carbamates is urea alcoholysis. After urea and methanol are mixed in a certain proportion, they are added to a reactor, heated to a certain temperature and maintained for a period of time to allow the reaction to proceed fully. After the reaction is completed, the final product can be obtained through cooling, separation and purification. This method has the characteristics of mature process, low cost and few by-products. However, the existing reactors are generally unable to be directly dosed on the reactor. When preparing carbamates, it is usually necessary to use other measuring tools to separately dose urea and methanol, and then pour them into the reactor for reaction. This operation is very troublesome. The measuring tools are placed apart from the kettle body, which is inconvenient to take and use, and easy to lose. Its overall use is very inconvenient. Therefore, it is necessary to propose an improvement measure to solve the above technical problems. Summary of the invention

[0004] The present invention provides a batching kettle for producing carbamate with automatic unloading, which is used to solve the technical problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an automatic dispensing kettle for carbamate production, comprising a kettle body, a liquid dispensing barrel and a solid dispensing barrel correspondingly arranged on the top of the kettle body, a liquid feed pipe correspondingly arranged in the liquid dispensing barrel, a liquid feed hopper correspondingly arranged on the top of the liquid feed pipe after passing through the liquid dispensing barrel, the bottom of the liquid feed pipe is connected with the inside of the kettle body, and a first control valve is correspondingly installed on the bottom of the liquid feed pipe, and the liquid storage amount of the liquid storage cavity in the liquid feed pipe is adjustable; the bottom of the solid dispensing barrel is connected with the inside of the kettle body, a conical hopper is correspondingly arranged on the top of the solid dispensing barrel, a second control valve is correspondingly installed on the dispensing pipe at the bottom of the conical hopper in the solid dispensing barrel, a circular collecting plate driven to rotate is correspondingly arranged below the dispensing pipe in the solid dispensing barrel, a collecting trough is correspondingly opened on the top of the collecting plate, the collecting trough is located directly below the dispensing pipe, and a pressure sensor is correspondingly installed inside the bottom of the collecting trough.

[0006] Preferably, an annular liquid collecting chamber is provided between the liquid dispensing barrel and the liquid feed pipe, a liquid sensor is installed at the bottom of the liquid collecting chamber, and a liquid outlet pipe is installed at the bottom of one side of the liquid collecting chamber; a driven rotating drum is installed on the outer surface of the liquid feed pipe, a plurality of first liquid outlet holes distributed vertically equidistantly are provided on one side of the liquid feed pipe, and a plurality of second liquid outlet holes distributed vertically spirally are provided on the rotating drum; when the rotating drum rotates, the first liquid outlet hole will correspond to the second liquid outlet hole at the same height as it.

[0007] Preferably, the top of the rotating drum passes through the liquid dispensing barrel, and a ring gear is installed on the top of the rotating drum. A protrusion is provided on one side of the top of the liquid dispensing barrel, and a second motor is embedded in the protrusion. A first gear is installed on the output shaft at the top of the second motor, and the first gear is meshed and connected with the ring gear.

[0008] Preferably, both sides of the collecting plate are rotatably installed on the inner wall of the solid dispensing barrel through a rotating shaft, and a second gear is correspondingly installed after the rotating shaft on one side of the collecting plate passes through the solid dispensing barrel. A fixed plate is provided at a corresponding position on the top of the kettle body, and a first motor is correspondingly installed on the fixed plate. An incomplete gear is correspondingly installed on the output shaft of the first motor, and the incomplete gear is correspondingly meshed and connected with the second gear.

[0009] Preferably, the second motor, the liquid sensor, the first control valve, the second control valve, the pressure sensor and the first motor are all electrically connected to an external control system.

[0010] Preferably, an air outlet pipe is correspondingly provided on the top of the kettle body, and a third control valve is correspondingly installed on the air outlet pipe.

[0011] Preferably, a plurality of supporting legs are correspondingly provided at the bottom of the kettle body.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention arranges a liquid dosing cylinder and a solid dosing cylinder on a kettle body and optimizes the structure thereof. When the liquid dosing cylinder is used to dosing methanol, the liquid storage volume of the liquid storage cavity in the liquid feed pipe can be planned in advance according to the proportion, so that a first liquid outlet hole at a corresponding height is connected to the liquid collecting cavity, and then a liquid sensor is used to cooperate to achieve the dosing and automatic unloading of methanol; and when the solid dosing cylinder is used to dosing urea, a collection plate that can be turned over and controlled is provided, and a pressure sensor is provided to cooperate to achieve the dosing and automatic unloading of urea. The overall structural design is ingenious, and the integrated design of the measuring tool and the kettle body also makes the measuring tool not easy to be lost. The use and operation are very flexible and convenient, and the practicability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the batching kettle of the present invention; Figure 2 The internal overall structure diagram of the liquid dispensing barrel of the present invention after cross-section; Figure 3 It is a schematic diagram of the cross-sectional structure of the liquid dispensing barrel of the present invention after being cut away; Figure 4 It is a schematic diagram of the cross-sectional structure of the solid dispensing barrel of the present invention after being cut away; Figure 5 It is an enlarged schematic diagram of the installation of the second gear and the incomplete gear of the present invention.

[0014] In the figure: 1, kettle body; 2, liquid dispensing cylinder; 201, convex block; 202, liquid collecting chamber; 3, liquid feed pipe; 301, liquid feed hopper; 302, first liquid outlet; 303, liquid storage chamber; 4, rotating drum; 401, second liquid outlet; 5, ring gear; 6, first gear; 7, liquid outlet pipe; 8, first control valve; 9, solid dispensing cylinder; 10, conical hopper; 1001, feed pipe; 11, second control valve; 12, collecting plate; 1201, collecting trough; 13, rotating shaft; 14, second gear; 15, incomplete gear; 16, first motor; 17, fixing plate; 18, supporting leg; 19, air outlet pipe. DETAILED DESCRIPTION

[0015] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0016] 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", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise", "coaxial", "bottom", "one end", "top", "the other end", "one side", "front", "two ends", "both sides" 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 limiting the present invention.

[0017] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0018] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed", "provided with", etc. should be understood in a broad sense, for example, it 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 internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0019] Reference is now made to the accompanying drawings, wherein the purpose of each illustration is only to show certain exemplary embodiments and is not intended to limit the present invention. In each of the drawings, the same reference numerals represent the same or corresponding parts. The dimensions and proportions in each of the drawings are also only for illustration and should not be interpreted as limiting the present invention, and these dimensions may be exaggerated relative to the actual product. Example

[0020] See also Figures 1 to 5 The present embodiment is an automatic unloading carbamate production batching kettle, comprising a kettle body 1, the top of the kettle body 1 is correspondingly provided with a liquid batching cylinder 2 and a solid batching cylinder 9, the liquid batching cylinder 2 is correspondingly provided with a liquid feed pipe 3, the top of the liquid feed pipe 3 passes through the liquid batching cylinder 2 and is correspondingly provided with a liquid feed hopper 301, the bottom of the liquid feed pipe 3 is connected to the inside of the kettle body 1, and the bottom of the liquid feed pipe 3 is correspondingly installed with a first control valve 8, and the liquid storage volume of the liquid storage cavity 303 in the liquid feed pipe 3 is adjustable; the solid batching The bottom of the cylinder 9 is connected with the interior of the kettle body 1, and a conical hopper 10 is correspondingly provided at the top of the solid batching cylinder 9. A second control valve 11 is correspondingly installed on the discharge pipe 1001 at the bottom of the conical hopper 10 in the solid batching cylinder 9, and a circular collection plate 12 driven to rotate is correspondingly provided below the discharge pipe 1001 in the solid batching cylinder 9, and a collection trough 1201 is correspondingly opened on the top of the collection plate 12. The collection trough 1201 is located directly below the discharge pipe 1001, and a pressure sensor is correspondingly installed inside the bottom of the collection trough 1201.

[0021] Specifically, an annular liquid collecting chamber 202 is correspondingly provided between the liquid dispensing barrel 2 and the liquid feeding pipe 3, a liquid sensor is correspondingly installed at the bottom of the liquid collecting chamber 202, a liquid outlet pipe 7 is correspondingly installed at the bottom of one side of the liquid collecting chamber 202, and a fourth control valve may be correspondingly installed on the liquid outlet pipe 7; a rotating drum 4 driven to rotate is fitted on the outer surface of the liquid feeding pipe 3, a plurality of first liquid outlet holes 302 vertically equidistantly distributed are correspondingly provided on one side of the liquid feeding pipe 3, and a plurality of second liquid outlet holes 401 vertically spirally distributed are correspondingly provided on the rotating drum 4, and the number and height of the second liquid outlet holes 401 correspond to the number and height of the first liquid outlet holes 302. When the rotating drum 4 rotates, the first liquid outlet holes 302 will correspond to the second liquid outlet holes 401 at the same height.

[0022] The top of the rotating drum 4 passes through the liquid dispensing barrel 2, and a ring gear 5 is installed on the top of the rotating drum 4. A convex block 201 is installed on one side of the top of the liquid dispensing barrel 2. A second motor is installed inside the convex block 201. A first gear 6 is installed on the output shaft on the top of the second motor. The first gear 6 is meshed and connected with the ring gear 5. When the first gear 6 rotates one circle, the rotating drum 4 rotates until another second liquid outlet 401 on it corresponds to the first liquid outlet 302, so that the first liquid outlet 302 connected to the liquid collecting chamber 202 is adjusted up or down by one level.

[0023] The two sides of the collecting plate 12 are rotatably mounted on the inner wall of the solid batching barrel 9 through the rotating shaft 13. The rotating shaft 13 on one side of the collecting plate 12 passes through the solid batching barrel 9 and is correspondingly mounted with a second gear 14. A fixing plate 17 is provided at a corresponding position on the top of the kettle body 1. A first motor 16 is correspondingly mounted on the fixing plate 17. An incomplete gear 15 is correspondingly mounted on the output shaft of the first motor 16. The incomplete gear 15 is correspondingly meshed and connected with the second gear 14. When in use, the incomplete gear 15 is driven to rotate by the first motor 16, so that the second gear 14 rotates, thereby turning the collecting plate 12 over and feeding the material into the kettle body 1. Since the center of gravity of the collecting plate 12 is at the lower part of the collecting trough 1201, the collecting plate 12 will automatically rotate to the initial state under the action of gravity for the next batching use.

[0024] A plurality of legs 18 are correspondingly provided at the bottom of the kettle body 1. An air outlet pipe 19 is also correspondingly provided at the top of the kettle body 1, and a third control valve is correspondingly installed on the air outlet pipe 19. The air outlet pipe 19 can be used to release the gas generated by the reaction, and can also be used to introduce gas into the kettle body 1. A high-pressure exhaust valve and the like can also be correspondingly installed at the top of the kettle body 1. A discharge port is also correspondingly provided at the bottom of the kettle body 1, and a fifth control valve can be correspondingly installed at the discharge port. The second motor, liquid sensor, pressure sensor, first motor 16, first control valve 8, second control valve 11, third control valve, fourth control valve, and fifth control valve can all be electrically connected to an external control system in order to realize automatic control.

[0025] The liquid dispensing cylinder 2, the liquid feeding pipe 3, the liquid feeding hopper 301, the rotating cylinder 4, the solid dispensing cylinder 9, and the conical hopper 10 can all be made of transparent glass materials, so as to facilitate observation of the internal conditions.

[0026] When using the liquid dosing barrel 2 to dosing methanol, the liquid storage volume of the liquid storage chamber 303 in the liquid feed pipe 3 can be planned in advance according to the ratio, and then the rotation of the rotating drum 4 is controlled to make a first liquid outlet 302 at a corresponding height connected to the liquid collecting chamber 202; then methanol is slowly poured into the liquid feed pipe 3, and after a period of time, the methanol overflows from the first liquid outlet 302 and flows into the liquid collecting chamber 202. After the liquid sensor at the bottom of the liquid collecting chamber 202 senses it, the pouring of methanol can be stopped, and then the first control valve 8 is opened to complete the dosing and automatic unloading of methanol.

[0027] When the solid batching barrel 9 is used to batch urea, urea is slowly poured into the conical hopper 10, and the urea falls into the collecting groove 1201 of the collecting plate 12. When the pressure sensor at the bottom of the collecting groove 1201 senses that the weight of urea in the collecting groove 1201 reaches a preset ratio, the second control valve 11 can be controlled to close, and then the first motor 16 can be operated to turn the collecting plate 12 over, and pour the urea into the kettle body 1, completing the batching and automatic unloading of urea.

[0028] The above-described embodiments only express a certain implementation mode of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. An automatic batching kettle for carbamate production, characterized in that: The invention comprises a kettle body (1), wherein a liquid dispensing cylinder (2) and a solid dispensing cylinder (9) are provided at the top of the kettle body (1), a liquid feeding pipe (3) is provided in the liquid dispensing cylinder (2), a liquid feeding hopper (301) is provided at the top of the liquid feeding pipe (3) after passing through the liquid dispensing cylinder (2), the bottom of the liquid feeding pipe (3) is connected to the inside of the kettle body (1), and a first control valve (8) is installed at the bottom of the liquid feeding pipe (3), and the liquid storage volume of the liquid storage cavity (303) in the liquid feeding pipe (3) is adjustable; the bottom of the solid dispensing cylinder (9) is connected to the inside of the kettle body (1 ... hopper (301) is provided at the top of the liquid feeding pipe (3). The solid material dispensing barrel (9) and the solid material dispensing barrel (9) are connected to each other, a conical hopper (10) is correspondingly provided at the top of the solid material dispensing barrel (9), a second control valve (11) is correspondingly installed on the discharge pipe (1001) at the bottom of the conical hopper (10) in the solid material dispensing barrel (9), a circular material collecting plate (12) driven to rotate is correspondingly provided below the discharge pipe (1001) in the solid material dispensing barrel (9), a material collecting trough (1201) is correspondingly provided at the top of the material collecting plate (12), the material collecting trough (1201) is located directly below the discharge pipe (1001), and a pressure sensor is correspondingly installed inside the bottom of the material collecting trough (1201).

2. The automatic discharging batching kettle for carbamate production according to claim 1, characterized in that: An annular liquid collecting chamber (202) is correspondingly arranged between the liquid dispensing barrel (2) and the liquid feeding pipe (3), a liquid sensor is correspondingly installed at the bottom of the liquid collecting chamber (202), and a liquid outlet pipe (7) is correspondingly installed at the bottom of one side of the liquid collecting chamber (202); a rotating drum (4) driven to rotate is mounted in contact with the outer surface of the liquid feeding pipe (3), a plurality of first liquid outlet holes (302) vertically equidistantly distributed are correspondingly opened on one side of the liquid feeding pipe (3), and a plurality of second liquid outlet holes (401) vertically spirally distributed are correspondingly opened on the rotating drum (4); when the rotating drum (4) rotates, the first liquid outlet holes (302) correspond to the second liquid outlet holes (401) at the same height thereof.

3. The automatic discharging batching kettle for carbamate production according to claim 2, characterized in that: The top of the rotating drum (4) passes through the liquid dispensing drum (2), a ring gear (5) is installed on the top of the rotating drum (4), a convex block (201) is provided on one side of the top of the liquid dispensing drum (2), a second motor is installed in the convex block (201), a first gear (6) is installed on the output shaft at the top of the second motor, and the first gear (6) is meshed and connected with the ring gear (5).

4. The automatic discharging batching kettle for carbamate production according to claim 3, characterized in that: The two sides of the collecting plate (12) are rotatably mounted on the inner side wall of the solid batching barrel (9) via a rotating shaft (13); the rotating shaft (13) on one side of the collecting plate (12) passes through the solid batching barrel (9) and is correspondingly mounted with a second gear (14); a fixing plate (17) is provided at a corresponding position on the top of the kettle body (1); a first motor (16) is correspondingly mounted on the fixing plate (17); an incomplete gear (15) is correspondingly mounted on the output shaft of the first motor (16); the incomplete gear (15) is correspondingly meshed and connected with the second gear (14).

5. The automatic discharging batching kettle for carbamate production according to claim 4, characterized in that: The second motor, the liquid sensor, the first control valve (8), the second control valve (11), the pressure sensor, and the first motor (16) are all electrically connected to an external control system.

6. The automatic discharging batching kettle for carbamate production according to claim 1, characterized in that: The top of the kettle body (1) is also provided with an air outlet pipe (19), and a third control valve is installed on the air outlet pipe (19).

7. The automatic discharging batching kettle for carbamate production according to claim 1, characterized in that: A plurality of supporting legs (18) are correspondingly provided at the bottom of the kettle body (1).

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