Multiple drying apparatus for producing 4,6-dichloropyrimidine
By designing a multi-stage drying device, utilizing a servo motor-driven stirring system and a gas pipe system controlled by a distribution box, the agglomeration problem during the initial drying of 4,6-dichloropyrimidine was solved, improving drying efficiency and product quality while reducing production costs.
Patent Information
- Application Number
- CN202521443138.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-10
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-07-10
AI Technical Summary
In the current production of 4,6-dichloropyrimidine, clumping is common during the initial drying process, leading to low drying efficiency, affecting product quality, and increasing production costs.
A multi-stage drying device is designed, which uses a servo motor-driven moving placement block and a rotating shaft to drive a stirring rod, combined with a flow divider and a gas pipeline system controlled by a solenoid valve to achieve effective stirring and drying of 4,6-dichloropyrimidine.
It improves drying efficiency, prevents clumping, enhances product quality, and reduces production time and costs.
Smart Images
Figure CN224681108U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of 4,6-dichloropyrimidine production technology, specifically to a multi-stage drying device for producing 4,6-dichloropyrimidine. Background Technology
[0002] 4,6-Dichloropyrimidine, as an important fine chemical intermediate, has wide applications in pesticides, pharmaceuticals, dyes and other fields. In the pesticide field, it is a key raw material for synthesizing a variety of high-efficiency herbicides and insecticides. In the pharmaceutical field, it can be used to prepare antiviral and antibacterial drugs. With the rapid development of related industries, the market demand for 4,6-dichloropyrimidine is increasing day by day, and at the same time, higher requirements are being placed on its product quality.
[0003] For example, CN220648840U discloses a drying device for the production of 4,6-dichloropyrimidine, including a drying chamber body. A heating chamber is fixedly connected to the top of the drying chamber body, and a heating tube is fixedly connected to the inner side of the heating chamber. A blower is fixedly connected to the left side of the heating chamber, and an air inlet pipe is fixedly connected to the outlet of the blower. A fixed pipe is fixedly connected to the right side of the heating chamber, and a branch pipe is fixedly installed on the outer side of the fixed pipe. Support frames are fixedly connected to both the left and right side walls of the drying chamber body. A support plate is movably connected to the inner side of the support frame, and a 4,6-dichloropyrimidine storage bottle is fixedly connected to the top of the support plate. A threaded rod is threadedly connected to the inner side of the support frame, and a movable pressure block is fixedly connected to the bottom end of the threaded rod. A movable rotating block is fixedly connected to the top end of the threaded rod. The drying device for 4,6-dichloropyrimidine production achieves the purpose of limiting and fixing the drying device to prevent the dichloropyrimidine raw material from spilling and being wasted. However, during the initial drying, the 4,6-dichloropyrimidine is prone to agglomeration, resulting in low drying efficiency and affecting the production quality of 4,6-dichloropyrimidine. At the same time, it is extremely time-consuming to send it back into the drying chamber after stirring, which affects work efficiency and increases production costs. Therefore, it is urgent to design a multi-stage drying device for the production of 4,6-dichloropyrimidine to solve the above problems. Utility Model Content
[0004] The purpose of this invention is to provide a multi-stage drying device for the production of 4,6-dichloropyrimidine, in order to solve the problems mentioned in the background art, such as the low drying efficiency caused by the easy agglomeration of 4,6-dichloropyrimidine during the initial drying, which affects the production quality of 4,6-dichloropyrimidine, and the time-consuming process of sending it back into the drying chamber after stirring, which affects work efficiency and increases production costs.
[0005] To achieve the above objectives, this utility model provides the following technical solution: A multi-stage drying device for producing 4,6-dichloropyrimidine, comprising an operating table and a drying mechanism. The drying mechanism is installed on the top right side of the operating table. Two sets of guide rails are longitudinally installed on the table surface. A placement frame is movable on the left side of the two sets of guide rails. The placement frame includes a placement block and moving wheels. Three sets of moving wheels are respectively installed on the front and rear sides of the bottom end of the placement block. The six sets of moving wheels move within the guide rails. A wire spool is installed on the front side of the bottom end of the placement block. A drying chamber is placed inside the placement block. The drying chamber includes a drying cylinder and an outer cover. The outer cover is placed on the top of the drying cylinder. The wire spool is sleeved in the center of a moving component. The moving component is installed on the table surface of the operating table. A fixing rod is installed on the top right side of the guide rails. The drying mechanism includes a fan and a distribution box. The distribution box is installed at the bottom end of the fan. The bottom side of the distribution box is connected to the upper side of the outer cover.
[0006] Preferably, the worktable has an inner groove at its center, and the inner front and back walls of the inner groove are fitted with toothed plates in an alternating manner.
[0007] Preferably, an outer annular groove is formed inward from the center of the placement block, an inner annular groove is formed inward from the center of the outer annular groove, a fixed bearing is installed at the center of the inner annular groove, a rotating shaft is installed at the center of the fixed bearing, a gear is installed at the bottom end of the rotating shaft, and a square groove is formed inward from the top end of the rotating shaft.
[0008] Preferably, a limiting bearing is installed on the bottom side inside the drying cylinder, a rotating rod is installed at the center of the limiting bearing, a square block is fixed at the bottom end of the rotating rod, the bottom end of the square block is fitted into a square groove, a cross plate is fixed at the top end of the rotating rod, and stirring rods are installed on the bottom side of the cross plate. An annular groove is opened on the inner wall of the top end of the drying cylinder.
[0009] Preferably, an annular protrusion is fixed at the bottom of the outer cover, the bottom of the annular protrusion is fitted into an annular groove, and a main air intake pipe and a secondary air intake pipe are respectively installed at the top of the outer cover.
[0010] Preferably, the moving component includes a servo motor and a lead screw. The bottom end of the servo motor is mounted on a pad, and the left end of the servo motor drives the lead screw to rotate. The rotation of the lead screw drives the drum to move.
[0011] Preferably, the distribution box is installed on the bottom side of the fan, a main air supply pipe is installed on the left side of the bottom of the distribution box, the bottom end of the main air supply pipe is connected to the main air inlet pipe, an L-shaped air supply pipe is installed on the right side of the distribution box, a solenoid valve is installed in the center of the L-shaped air supply pipe, a limit switch is installed on the side of the solenoid valve, and the bottom side of the L-shaped air supply pipe is connected to the auxiliary air inlet pipe.
[0012] Compared with the prior art, the beneficial effects of this utility model are:
[0013] This is a multi-stage drying device for producing 4,6-dichloropyrimidine. Two sets of rack plates installed inside the operating table can stir the moving drying chamber, thereby improving efficiency. A rotating shaft inside the placement block can connect to the drying cylinder, which can rotate and also provide protection to further improve stability and prevent 4,6-dichloropyrimidine from falling. A servo motor drives the lead screw to rotate, thereby moving the placement block to stir, which is convenient, fast and efficient.
[0014] This is a multi-stage drying device for producing 4,6-dichloropyrimidine. A fan can distribute warm air through a distribution box on the bottom side to facilitate multiple drying processes. The main air supply pipe inside the distribution box sends the warm air into the main air inlet pipe to break up the clumps of 4,6-dichloropyrimidine for initial drying. The solenoid valve and limit switch installed in the L-shaped air supply pipe facilitate the drying of the broken-up 4,6-dichloropyrimidine, thereby improving the quality of 4,6-dichloropyrimidine. Attached Figure Description
[0015] Figure 1 This is a front view schematic diagram of the present utility model;
[0016] Figure 2 This is a side view of the present invention;
[0017] Figure 3 This is an enlarged schematic diagram of the drying mechanism of this utility model;
[0018] Figure 4 This is a cross-sectional view of the internal structure of the drying oven of this utility model.
[0019] In the diagram: 1. Operating table; 11. Inner groove; 111. Rack plate; 12. Guide rail; 2. Placement rack; 21. Placement block; 211. Outer ring groove; 212. Inner ring groove; 213. Fixed bearing; 214. Rotating shaft; 2141. Square groove; 215. Gear; 22. Moving wheel; 23. Wire drum; 3. Drying oven; 31. Drying cylinder; 311. Limit bearing; 312. Rotating rod; 3121. Square block; 3 13. Cross plate; 314. Stirring rod; 315. Annular groove; 32. Outer cover; 321. Annular protrusion; 322. Main air inlet pipe; 323. Secondary air inlet pipe; 4. Moving parts; 41. Servo motor; 42. Lead screw; 43. Pad; 5. Fixing rod; 6. Drying mechanism; 61. Fan; 62. Diverter box; 621. Main air supply pipe; 622. L-shaped air supply pipe; 623. Solenoid valve; 624. Limit switch. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figures 1-4 One embodiment provided by this utility model:
[0022] A multi-stage drying apparatus for producing 4,6-dichloropyrimidine is disclosed in this application. The servo motor 41, fan 61, solenoid valve 623, and limit switch 624 used in this application are commercially available products, and their principles and connection methods are existing technologies well known to those skilled in the art. The apparatus includes an operating table 1 and a drying mechanism 6. The drying mechanism 6 is installed on the top right side of the operating table 1. Two sets of guide rails 12 are longitudinally installed on the table surface of the operating table 1. A placement rack 2 moves to the left side of the two sets of guide rails 12. The placement rack 2 includes a placement block 21 and casters 22. The bottom end of the placement block 21 is equipped with a placement block 21 and casters 22. Three sets of moving wheels 22 are installed, and six sets of moving wheels 22 move within the guide rail 12. A wire spool 23 is installed on the front side of the bottom end of the placement block 21. A drying box 3 is placed inside the placement block 21. The drying box 3 includes a drying cylinder 31 and an outer cover 32. The outer cover 32 is placed on the top of the drying cylinder 31. The wire spool 23 is fitted in the center of the moving part 4. The moving part 4 is installed on the table surface of the operating table 1. A fixing rod 5 is installed on the right side of the top end of the guide rail 12. The drying mechanism 6 includes a fan 61 and a diversion box 62. The diversion box 62 is installed at the bottom end of the fan 61. The bottom side of the diversion box 62 is connected to the upper side of the outer cover 32.
[0023] As a further feature of this invention, the tabletop 1 has an inner groove 11 at its center. The inner front and rear walls of the inner groove 11 are fitted with rack plates 111 in an alternating manner. The center of the placement block 21 has an outer ring groove 211 extending inward. The center of the outer ring groove 211 has an inner ring groove 212 extending inward. A fixed bearing 213 is installed at the center of the inner ring groove 212. A rotating shaft 214 is installed at the center of the fixed bearing 213. A gear 215 is installed at the bottom of the rotating shaft 214. A square groove 2141 is opened inward at the top of the rotating shaft 214, which facilitates the movement of the placement block and improves efficiency. At the same time, it facilitates the turning of the drying oven and further improves its stability.
[0024] Furthermore, a limiting bearing 311 is installed on the bottom side inside the drying cylinder 31. A rotating rod 312 is installed at the center of the limiting bearing 311. A square block 3121 is fixed at the bottom end of the rotating rod 312, and the bottom end of the square block 3121 is fitted into a square groove 2141. A cross plate 313 is fixed at the top end of the rotating rod 312. A stirring rod 314 is installed on the bottom side of the cross plate 313. An annular groove 315 is opened on the inner wall of the top end of the drying cylinder 31. An annular protrusion 321 is fixed at the bottom end of the outer cover 32, and the bottom end of the annular protrusion 321 is fitted into the annular groove 315. The top end of the outer cover 32 is respectively equipped with a main air inlet pipe 322 and a secondary air inlet pipe 323. This is beneficial for the rotating shaft inside the block to be connected to the drying cylinder. While driving the rotation, it can also provide protection to further improve stability and prevent 4,6-dichloropyrimidine from falling off.
[0025] Furthermore, the moving part 4 includes a servo motor 41 and a lead screw 42. The bottom end of the servo motor 41 is mounted on the pad 43. The left end of the servo motor 41 drives the lead screw 42 to rotate. The rotation of the lead screw 42 drives the screw drum 23 to move, which facilitates the movement of the placement block.
[0026] Furthermore, the distribution box 62 is installed on the bottom side of the fan 61. The main air supply pipe 621 is installed on the left side of the bottom of the distribution box 62. The bottom end of the main air supply pipe 621 is connected to the main air inlet pipe 322. The L-shaped air supply pipe 622 is installed on the right side of the distribution box 62. The solenoid valve 623 is installed in the center of the L-shaped air supply pipe 622. The limit switch 624 is installed on the side of the solenoid valve 623. The bottom side of the L-shaped air supply pipe 622 is connected to the auxiliary air inlet pipe 323, which facilitates the drying of 4,6-dichloropyrimidine after condensation and thus improves the quality of 4,6-dichloropyrimidine.
[0027] Working principle: In use, the operator first places the 4,6-dichloropyrimidine raw material into the drying cylinder 31. Then, the annular protrusion 321 on the bottom side of the outer cover 32 is engaged in the annular groove 315 at the top of the drying cylinder 31. Next, the main air supply pipe 621 and the L-shaped air supply pipe 622 at the bottom of the distribution box 62 are connected to the main air inlet pipe 322 and the auxiliary air inlet pipe 323, respectively. Then, the fan 61 is started to deliver warm air through the main air supply pipe 621 into the drying cylinder 31, while the L-shaped air supply pipe 622 is closed by the solenoid valve 623. Then, the servo motor 41 is started to drive the lead screw 42 on the left side to rotate. When the lead screw 42 rotates, it moves the wire drum 23 on the bottom side of the placement block 21. The movement of the cylinder 23 causes the placement block 21 to move within the guide rail 12 via six sets of moving wheels 22 on the bottom side. When the placement block 21 moves, it causes the gear 215 on the bottom side of the rotating shaft 214 to move and mesh with the rack plate 111 to rotate. The rotation of the rotating shaft 214 causes the cross plate 313 fixed at the top and the four sets of stirring rods 314 installed to rotate within the drying cylinder 31 to stir 4,6-dichloropyrimidine and prevent clumping. The movement of the drying cylinder 31 stops when it moves to the side of the fixed rod 5. When the limit switch 624 contacts the placement block 21, it can start the solenoid valve 623 to open the L-shaped air supply pipe 622 to continuously supply air for drying 4,6-dichloropyrimidine. The above is the complete working principle of this utility model.
[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A multi-stage drying apparatus for producing 4,6-dichloropyrimidine, comprising an operating table (1) and a drying mechanism (6), wherein the drying mechanism (6) is mounted on the top right side of the operating table (1), characterized in that: The operating table (1) has two sets of guide rails (12) mounted longitudinally on its surface. A placement frame (2) moves to the left side of each of the two sets of guide rails (12). The placement frame (2) includes a placement block (21) and casters (22). Three sets of casters (22) are mounted on the front and rear sides of the bottom of the placement block (21). The six sets of casters (22) move within the guide rails (12). A wire spool (23) is mounted on the front side of the bottom of the placement block (21). A drying chamber (3) is placed inside the placement block (21). The device includes a drying cylinder (31) and an outer cover (32). The outer cover (32) is placed on the top of the drying cylinder (31). The wire spool (23) is fitted around the center of the moving part (4). The moving part (4) is installed on the table surface of the operating table (1). A fixing rod (5) is installed on the right side of the top of the guide rail (12). The drying mechanism (6) includes a fan (61) and a diversion box (62). The diversion box (62) is installed at the bottom of the fan (61). The bottom side of the diversion box (62) is connected to the upper side of the outer cover (32).
2. The multiple drying apparatus for producing 4,6-dichloropyrimidine according to claim 1, characterized in that: The operating table (1) has an inner groove (11) at the center of its surface, and the inner groove (11) has rack plates (111) installed alternately on its front and rear walls.
3. The multiple drying apparatus for producing 4,6-dichloropyrimidine according to claim 1, characterized in that: The placement block (21) has an outer ring groove (211) extending inward from its center, and an inner ring groove (212) extending inward from its center. A fixed bearing (213) is installed at the center of the inner ring groove (212), and a rotating shaft (214) is installed at the center of the fixed bearing (213). A gear (215) is installed at the bottom end of the rotating shaft (214), and a square groove (2141) extending inward from the top end of the rotating shaft (214).
4. A multiple drying apparatus for producing 4,6-dichloropyrimidine according to claim 1, characterized in that: A limiting bearing (311) is installed on the bottom side inside the drying cylinder (31). A rotating rod (312) is installed at the center of the limiting bearing (311). A square block (3121) is fixed at the bottom end of the rotating rod (312). The bottom end of the square block (3121) is fitted into a square groove (2141). A cross plate (313) is fixed at the top end of the rotating rod (312). A stirring rod (314) is installed at the bottom end of the side of the cross plate (313). An annular groove (315) is opened on the inner wall of the top end of the drying cylinder (31).
5. A multiple drying apparatus for producing 4,6-dichloropyrimidine according to claim 1, characterized in that: The bottom end of the outer cover (32) is fixed with an annular protrusion (321), the bottom end of the annular protrusion (321) is fitted into an annular groove (315), and the top end of the outer cover (32) is respectively equipped with a main air intake pipe (322) and a secondary air intake pipe (323).
6. A multiple drying apparatus for producing 4,6-dichloropyrimidine according to claim 1, characterized in that: The moving part (4) includes a servo motor (41) and a lead screw (42). The bottom end of the servo motor (41) is mounted on the pad (43). The left end of the servo motor (41) drives the lead screw (42) to rotate. The rotation of the lead screw (42) drives the drum (23) to move.
7. A multiple drying apparatus for producing 4,6-dichloropyrimidine according to claim 1, characterized in that: The distribution box (62) is installed on the bottom side of the fan (61). A main air supply pipe (621) is installed on the left side of the bottom end of the distribution box (62). The bottom end of the main air supply pipe (621) is connected to the main air inlet pipe (322). An L-shaped air supply pipe (622) is installed on the right side of the distribution box (62). A solenoid valve (623) is installed in the center of the L-shaped air supply pipe (622). A limit switch (624) is installed on the side of the solenoid valve (623). The bottom side of the L-shaped air supply pipe (622) is connected to the auxiliary air inlet pipe (323).