2, 4-dichloropyrimidine condensation slicing device

Abstract

The utility model relates to the technical field of condensation slicing devices, in particular to a 2, 4-dichloropyrimidine condensation slicing device which comprises a feeding device, a condensing device and a slicing device, the feeding device comprises a heater and a feeding hopper, the heater is arranged on the outer side of the feeding hopper, the condensing device comprises a crawler belt and an air cooler, and the slicing device is arranged on the outer side of the feeding hopper. One end of the crawler belt is arranged below the feeding hopper, an air supply port of the air cooler faces the crawler belt, the slicing device comprises a scraper, and the scraper is arranged below the other end of the crawler belt; by arranging the feeding device, the condensing device and the slicing device which are specially made, the melting process is more uniform, the slicing process is more stable and more uniform, and the slice product quality and the slice production efficiency are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of high vacuum distillation equipment technology, specifically to a 2,4-dichloropyrimidine condensation and slicing device. Background Technology

[0002] 2,4-Dichloropyrimidine, CAS: 3934-20-1, is an important organic synthesis intermediate, often used as a building block in Suzuki coupling, alkylation and other reactions, and is widely used in the preparation of organic compounds such as pesticides, dyes, photosensitizers and pharmaceuticals. Its melting point is 58-61℃, so in chemical production, it is sometimes sliced ​​and packaged using a slicer. After melting, the molten liquid is cooled by a roller and solidified into a solid, which is evenly attached to the roller. The roller rotates continuously, and the blades scrape off the chemical adhering to the roller. The solid then passes through a hopper and is packaged.

[0003] Patent CN202323113026.0 discloses a 2,4-dichloro-5-fluoropyrimidine slicer. 2,4-dichloro-5-fluoropyrimidine is 2,4-dichloropyrimidine in which a fluorine atom is replaced at the 5-position carbon of the pyrimidine. This patent improves the purity of the finished product by setting an air inlet pipe to discharge the remaining gas and prevent the material from reacting with the remaining gas. It also has a feed distribution plate to enable continuous production and improve the production rate. However, when applied to the condensation slicing of 2,4-dichloropyrimidine, the following problems still exist: there may be incomplete melting, such as the liquid molten material carrying some solid material, which will lead to uneven slicing. There may also be uneven condensation, such as slicing when some molten material is not solidified, and the condensed material will stick to the blade, resulting in the inability to slice or uneven slicing.

[0004] Therefore, there is an urgent need to further study the condensation slicing process of 2,4-dichloropyrimidine, and to provide a novel condensation slicing device for 2,4-dichloropyrimidine to ensure uniformity in the melting and condensation processes of the material, improve condensation slicing efficiency, and enhance the quality of the sliced ​​products. Utility Model Content

[0005] To address the aforementioned issues, this invention provides a 2,4-dichloropyrimidine condensation slicing device. By incorporating specially designed feeding, condensation, and slicing devices, the melting process becomes more uniform, and the slicing process becomes more stable and uniform, significantly improving the quality of the sliced ​​products and the slicing production efficiency.

[0006] On one hand, this utility model provides a 2,4-dichloropyrimidine condensation slicing device, including a feeding device, a condensation device, and a slicing device. The feeding device includes a heater and a feeding hopper, with the heater disposed on the outside of the feeding hopper. The condensation device includes a conveyor belt and a cooling fan, with one end of the conveyor belt disposed below the feeding hopper and the air outlet of the cooling fan facing the conveyor belt. The slicing device includes a scraper, which is disposed below the other end of the conveyor belt.

[0007] Furthermore, the heater is a microwave heater.

[0008] Furthermore, a nozzle is provided at the bottom of the feed hopper.

[0009] Furthermore, the slicing device also includes a motor and one or more coarse cutting blades, the coarse cutting blades being disposed above the track, and the motor driving the coarse cutting blades to move up and down.

[0010] Furthermore, the slicing device also includes an air guide plate, which is disposed between the air cooler and the track. The air guide plate includes one or more air ducts, and each air duct corresponds to a coarse cutting blade.

[0011] Furthermore, the condensation device includes a drive roller and a transmission wheel. The drive roller is located below the feed hopper, and the transmission wheel is located diagonally below the drive roller. The track wraps around the drive roller and the transmission wheel.

[0012] Furthermore, the condensation device includes a coarse cutting baffle, which is disposed below the contact surface between the track and the coarse cutting blade.

[0013] The coarse cutting baffle is used to hold the track and the condensed material on the track against it when the coarse cutting blade moves downward. The coarse cutting blade is a blunt blade to avoid damaging the track. At the same time, the coarse cutting blade is a blunt blade instead of a hammer-shaped component, which can make the condensed material cut more evenly, thereby preventing the material from being broken apart due to uneven cutting when the track enters the driven roller.

[0014] Furthermore, it also includes a collection device disposed below the scraper.

[0015] The beneficial technical effects of this utility model are:

[0016] 1. This utility model provides a 2,4-dichloropyrimidine condensation slicing device. By setting up a specially designed feeding device, condensation device, and slicing device, the melting process is more uniform, and the slicing process is more stable and uniform, which significantly improves the quality of sliced ​​products and the slicing production efficiency.

[0017] 2. Compared with traditional heat conduction heating and melting, this utility model uses microwave heating, which enables the material to melt completely, both inside and on the surface, at the same time. This avoids the problem of uneven slicing caused by incomplete melting, making the slicing process more stable and improving product quality.

[0018] 3. Compared with the traditional roller slicing method, this utility model adopts the roller conveyor slicing method, which can increase the maximum product quantity of the same batch of condensed slices. The innovative design of the coarse cutting process first performs coarse cutting to initially break the whole piece of condensed material so that it is not broken apart when passing through the roller. At the same time, the condensed material further develops cracks when passing through the roller, and then is quickly broken into uniform small pieces under the action of the scraper.

[0019] 4. This utility model proposes a novel design for the air-guiding plate and the coarse cutting blade. The coarse cutting blade generates heat during mechanical cutting. The air-guiding hole of the air-guiding plate can gather cold air to the coarse cutting blade for pre-cooling. At the same time, the air-guiding hole of the air-guiding plate can concentrate the cooling of the material in the corresponding area of ​​the coarse cutting blade before coarse cutting to ensure the stability of the condensation and slicing process. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the internal structure of the 2,4-dichloropyrimidine condensation slicing device of this utility model.

[0021] Reference numerals: 1-Feed hopper, 2-Microwave heater, 3-Nozzle, 41-Drive roller, 42-Driven roller, 5-Track, 51-Roughing baffle, 6-Cooler, 71-Roughing blade, 72-Scraper, 8-Air guide plate, 9-Collection device. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0023] like Figure 1As shown, the 2,4-dichloropyrimidine condensation slicing device of this utility model includes a feeding hopper 1, with a microwave heater 2 wrapped around the outside of the feeding hopper 1. The microwave heater 2 can emit microwaves into the feeding hopper 1 to achieve uniform heating. A nozzle 3 is provided at the bottom of the feeding hopper 1, which can spray the material evenly downwards. Below the nozzle 3 is a track 5, which is annular and is wrapped inside a drive roller 41 and a driven roller 42. The drive roller 41 is connected to a motor, which drives the drive roller 41 to rotate, thereby driving the track 5 to run. The driven roller 42 thus rotates inside the track 5. A coarse cutting baffle 51 is provided at the part position. The coarse cutting baffle 51 is made of rigid material. An air guide plate 8 is provided above the track 5. The air guide plate 8 has three air guide holes. Each air guide hole corresponds to a coarse cutting blade 71. The coarse cutting blade 71 is connected to a motor. The motor drives the coarse cutting blade 71 to move up and down. The structure of the motor drive in this utility model can be directly obtained from the prior art, so it is omitted. A cold air blower 6 is provided at the top of the interior of the overall device. The cold air blower 6 blows downward. A scraper 72 is provided below the driven roller 42. A collection device 9 is located below the scraper 72. Figure 1 The diagram shows a cross-sectional view. In reality, the track 5, the air intake plate 8, etc., all extend along a direction perpendicular to the paper surface. For example, the air intake plate 8 is fixed to the inner wall of the overall device on both sides along the direction perpendicular to the paper surface. For another example, the drive roller 41 and the driven roller 42 are actually rollers that are rotatably connected to the inner wall on both sides. The coarse cutting blade 71 and the track 5 extend with the same width along the direction perpendicular to the paper surface. The nozzle 3 actually sprays molten material downwards evenly along the direction perpendicular to the paper surface.

[0024] The following is the working principle of the 2,4-dichloropyrimidine cold slicing device of this invention:

[0025] First, solid 2,4-dichloropyrimidine is added to the feed hopper 1. The microwave heater 2 is then turned on, causing the material to uniformly heat to its melting point of 60°C. The molten material is sprayed downwards and evenly onto the conveyor belt 5 from the nozzle 3. The motor drives the drive roller 41 to rotate counterclockwise, causing the molten material to move diagonally downwards on the surface of the conveyor belt 5. The cold air blown by the cooler 6 passes through the air duct on the air duct 8, causing the molten material to gradually condense. During this process, the motor drives the coarse cutting blades 71 to periodically move downwards, performing preliminary slicing of the condensed material. The three coarse cutting blades 71 can... The material condensed on the track 5 can be initially cut into four large pieces. Of course, a higher movement frequency can be set to initially cut the condensed material into more pieces. When the coarse cutting blade 71 moves downward, the coarse cutting baffle 51 provides support for the track 5. The coarse cutting blade 71 is a blunt blade to avoid damaging the track structure. Due to the cutting of the coarse cutting blade 71, the small pieces of condensed material adhering to the track 5 will not be broken when passing the driven roller 42. The rotation causes certain cracks to appear in the condensed material. When it moves to the scraper 72, the condensed material is scraped off and broken along the crack to obtain flaky crystals.

[0026] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A 2,4-dichloropyrimidine condensation slicing apparatus, characterized in that, The device includes a feeding device, a condensing device, and a slicing device. The feeding device includes a heater and a feeding hopper, with the heater located outside the feeding hopper. The condensing device includes a track and a cooling fan, with one end of the track located below the feeding hopper and the air outlet of the cooling fan facing the track. The slicing device includes a scraper located below the other end of the track.

2. The 2,4-dichloropyrimidine condensation slicing apparatus as described in claim 1, characterized in that, The heater is a microwave heater.

3. The 2,4-dichloropyrimidine condensation slicing apparatus as described in claim 1, characterized in that, The bottom of the feed hopper is equipped with a nozzle.

4. The 2,4-dichloropyrimidine condensation slicing apparatus as described in claim 1, characterized in that, The slicing device also includes a motor and one or more coarse cutting blades, which are positioned above the track and the motor drives the coarse cutting blades to move up and down.

5. The 2,4-dichloropyrimidine condensation slicing apparatus as described in claim 4, characterized in that, The slicing device also includes an air guide plate, which is disposed between the air cooler and the track. The air guide plate includes one or more air ducts, and each air duct corresponds to a coarse cutting blade.

6. The 2,4-dichloropyrimidine condensation slicing apparatus as described in claim 4 or 5, characterized in that, The condensation device includes a drive roller and a transmission wheel. The drive roller is located below the feed hopper, and the transmission wheel is located diagonally below the drive roller. The track wraps around the drive roller and the transmission wheel.

7. The 2,4-dichloropyrimidine condensation slicing apparatus as described in claim 6, characterized in that, The condensation device includes a coarse cutting baffle, which is disposed below the contact surface between the track and the coarse cutting blade.

8. The 2,4-dichloropyrimidine condensation slicing apparatus as described in claim 1, characterized in that, It also includes a collection device disposed below the scraper.

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