Stirring device for pyrimidine preparation
Through the design of self-folding stirrer and sealed reactor, the problems of uneven stirring and contamination in pyrimidine preparation are solved, uniform mixing and convenient cleaning are achieved, and environmental pollution of organic matter is reduced.
Patent Information
- Application Number
- CN202421005896.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-05-10
AI Technical Summary
When the total amount of reaction raw materials is large, it is difficult to achieve uniform mixing and uniform heating, and the stirring range is small, making it inconvenient to take out and clean.
A self-folding stirrer is designed to expand and fold the stirrer blade by driving the movable round rod and pulling spring in the mounting tube by driving the motor to expand the stirring range, and automatically fold after the reaction is finished, for easy cleaning. At the same time, the reactor adopts a sealing design and a one-way exhaust valve to treat gas to reduce the pollution caused by volatilization of organic matter.
The uniform mixing and temperature uniformity of the reaction raw materials are achieved, while the stirring range is expanded, which is convenient for cleaning and reduces the environmental pollution of organic matter.
Smart Images
Figure CN222267151U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of stirring equipment, and in particular relates to a stirring device for preparing pyrimidine. Background Art
[0002] Pyrimidine is a heterocyclic organic molecule that exists in many drugs and naturally derived compounds. It is often used in the synthesis and discovery of antiviral drugs and is widely used as a pharmaceutical raw material. When synthesizing pyrimidine, various raw materials need to react chemically under heating, and a stirring device is required to allow the various raw materials to react evenly.
[0003] Since the organic matter in the reaction raw materials is relatively volatile, the opening of the reactor is relatively small. The stirring device in the reactor is usually small in size and has a small stirring range in order to facilitate removal and cleaning. When the total amount of the reaction raw materials is large, it is difficult to mix the raw materials in time and evenly for chemical reaction. Therefore, a new stirring device for pyrimidine preparation is needed. Utility Model Content
[0004] In order to solve the above problems, the utility model discloses a stirring device for preparing pyrimidine.
[0005] In order to achieve the above object, the technical solution of the utility model is as follows:
[0006] A stirring device for preparing pyrimidine comprises a reactor, a top cover is installed on the top of the reactor, a driving motor is fixedly installed on the top cover, and a self-folding stirrer is coaxially fixedly connected to the output end of the driving motor; the self-folding stirrer comprises: a mounting tube coaxially fixedly connected to the output end of the driving motor, a movable round rod is slidably installed in the inner cavity of the mounting tube, a pulling spring in a contracted state is fixedly connected to the top of the movable round rod, and the top of the pulling spring is fixedly connected to the top wall of the inner cavity of the mounting tube, and the bottom of the movable round rod drives a plurality of groups of folding stirring components.
[0007] As a preferred technical solution of the utility model, each group of the folding stirring assembly includes: a first rotating seat fixedly connected to the bottom of the movable round rod, and a fixed plate fixedly connected to the bottom of the mounting tube, the first rotating seat is rotatably connected to a connecting rod, and the fixed plate is fixedly installed with a plurality of second rotating seats, and the number of the second rotating seats is at least two, each of the second rotating seats is rotatably connected to a folding rod, and a plurality of mutually parallel folding rods are rotatably connected to a plurality of mutually parallel stirring blades, and the end of the connecting rod is rotatably connected to one of the folding rods.
[0008] As a preferred technical solution of the utility model, the stirring blades are arranged vertically, and a plurality of the stirring blades in the same group are arranged in different planes.
[0009] As a preferred technical solution of the utility model, a plurality of groups of folding stirring components are evenly distributed in a ring shape about the movable round rod.
[0010] As a preferred technical solution of the utility model, the bottom of the movable round rod is provided with a plurality of protrusions connected with the folding stirring assembly, and the mounting tube is provided with a mounting groove adapted for the sliding of the movable round rod.
[0011] As a preferred technical solution of the utility model, the edge of the top cover is rotatably connected with a rotating handle.
[0012] As a preferred technical solution of the utility model, the top of the reactor is connected to a feeding hopper and a one-way exhaust valve, the top of the feeding hopper is threadedly connected to a sealing cover, the top of the one-way exhaust valve is provided with an external thread, and the outside of the reactor is wrapped with a heating jacket.
[0013] The beneficial effects of the utility model are:
[0014] 1. The rotating self-folding agitator stirs the reaction raw materials under the action of centrifugal force, so that the reaction raw materials are mixed evenly and the reaction temperature is kept uniform everywhere. Under the action of centrifugal force, the stirring blades move away from the mounting tube, so that the folded stirring blades are unfolded, which expands the stirring range of the self-folding agitator. After the self-folding agitator stops rotating, the movable round rod moves vertically upward under the pull of the pulling spring, and the movable round rod pulls the folding rod to rotate and fold through the connecting rod, so that several stirring blades in the same group are folded together as much as possible to reduce the folding volume, which is convenient for lifting upward from the opening of the reactor for cleaning. Thanks to the design of self-folding and rotating unfolding, the self-folding agitator can maintain a large stirring range and is easy to take out for cleaning;
[0015] 2. The reactor adopts a sealed design. When in use, add the reaction raw materials into the reactor through the hopper, and then tighten the sealing cover. The gas generated after heating in the reactor is discharged through the exhaust gas treatment pipeline connected to the one-way exhaust valve, reducing the pollution of organic volatilization to the environment. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;
[0017] Figure 2 It is an overall cross-sectional view of an embodiment of the utility model;
[0018] Figure 3 For the utility model embodiment Figure 2 The enlarged view of point A in the middle;
[0019] Figure 4 This is a schematic structural diagram of a self-folding agitator according to an embodiment of the utility model;
[0020] Figure 5 It is a partial structural schematic diagram of the movable round rod, the pulling spring and the folding stirring assembly of the embodiment of the utility model;
[0021] Figure 6 This is a schematic diagram of the structure of the installation pipe according to an embodiment of the utility model.
[0022] List of Figure Symbols:
[0023] 1. Reactor; 2. Top cover; 3. Driving motor;
[0024] 4. Self-folding stirrer; 41. Mounting tube; 42. Movable round rod; 43. Pull spring; 44. Folding stirring assembly; 441. First rotating seat; 442. Fixed plate; 443. Second rotating seat; 444. Connecting rod; 445. Folding rod; 446. Stirring blade;
[0025] 5. Heating jacket; 6. Support frame; 7. One-way exhaust valve; 8. Feeding hopper; 9. Sealing cover; 10. Rotating handle. DETAILED DESCRIPTION
[0026] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations. It should be understood that the following specific implementations are only used to illustrate the present invention and are not used to limit the scope of the present invention.
[0027] See also Figure 1-6 , a stirring device for preparing pyrimidine, comprising a reactor 1, a top cover 2 is installed on the top of the reactor 1. The edge of the top cover 2 is rotatably connected with a rotating handle 10. The reactor 1 and the top cover 2 are connected by threads, and the setting of the rotating handle 10 facilitates tightening the top cover 2. A driving motor 3 is fixedly installed on the top cover 2, and a self-folding stirrer 4 is coaxially fixedly connected to the output end of the driving motor 3. A feeding hopper 8 and a one-way exhaust valve 7 are connected to the top of the reactor 1, and a sealing cover 9 is threadedly connected to the top of the feeding hopper 8. An external thread is provided on the top of the one-way exhaust valve 7, and the one-way exhaust valve 7 is used to discharge the gas expanded in the inner cavity of the reactor 1. The external thread of the one-way exhaust valve 7 is threadedly connected to a waste gas treatment pipeline. The outside of the reactor 1 is wrapped with a heating jacket 5, and the heating jacket 5 is used to maintain the chemical reaction temperature. The discharge pipe at the bottom of the reactor 1 passes through the heating jacket 5. A support frame 6 is fixedly connected to the bottom of the reactor 1 to facilitate the bottom discharge of the reactor 1.
[0028] The self-folding stirrer 4 comprises: a mounting tube 41 coaxially fixedly connected to the output end of the driving motor 3, a movable round rod 42 slidably mounted in the inner cavity of the mounting tube 41, a pulling spring 43 in a contracted state fixedly connected to the top of the movable round rod 42, and the top of the pulling spring 43 is fixedly connected to the inner cavity top wall of the mounting tube 41. The bottom of the movable round rod 42 drives a plurality of groups of folding stirring components 44. The plurality of groups of folding stirring components 44 are evenly distributed in an annular shape about the movable round rod 42. The pulling spring 43 pulls the movable round rod 42 upward, so that the folding stirring components 44 remain in a folded state when stationary.
[0029] Each group of folding stirring components 44 includes: a first rotating seat 441 fixedly connected to the bottom of the movable round rod 42, a fixed plate 442 fixedly connected to the bottom of the mounting tube 41, the first rotating seat 441 is rotatably connected to a connecting rod 444, and the fixed plate 442 is fixedly installed with a plurality of second rotating seats 443, and the number of the second rotating seats 443 is at least two. Each second rotating seat 443 is rotatably connected to a folding rod 445, and a plurality of mutually parallel folding rods 445 are rotatably connected to a plurality of mutually parallel stirring blades 446. When only one folding rod 445 is provided for each group of folding stirring components 44, the stirring blades 446 cannot remain in a vertical state. The end of the connecting rod 444 is rotatably connected to one of the folding rods 445, and the connecting rod 444 is used to drive the folding rod 445 to rotate and fold.
[0030] The stirring blades 446 are arranged vertically, and several stirring blades 446 of the same group are arranged in different planes. Several limiting rotation columns are arranged on the connecting rod 444, and the rotation grooves of the limiting rotation columns are arranged in different planes, and the rotation grooves of several limiting rotation columns connected to the same stirring blade 446 are arranged in the same plane. When several stirring blades 446 of the same group are in different planes, several stirring blades 446 can be folded together as much as possible to further reduce the folding volume. After the self-folding stirrer is folded 4 times, it can be taken out from the opening of the reactor 1 for cleaning.
[0031] The bottom of the movable round rod 42 is provided with a plurality of protrusions connected to the folding stirring assembly 44, and the mounting tube 41 is provided with a mounting groove adapted to slide the movable round rod 42. The number of the bottom protrusions of the movable round rod 42 corresponds to the number of the folding stirring assembly 44.
[0032] Working principle:
[0033] When in use, the reaction raw materials are added to the reactor 1 through the hopper 8, and then the sealing cover 9 is tightened to seal the inner cavity of the reactor 1. Then the heating sleeve 5 heats the reactor 1 to maintain the chemical reaction temperature of the raw materials. At the same time, the driving motor 3 drives the self-folding stirrer 4 to rotate. Under the action of centrifugal force, the self-folding stirrer 4 unfolds and stirs the reaction raw materials to make them evenly mixed and keep the reaction temperature uniform. Under the action of centrifugal force, the stirring blades 446 move away from the mounting tube 41, so that the folded stirring blades 446 unfold, expanding the stirring range of the self-folding stirrer 4;
[0034] After the reaction is completed, the driving motor 3 stops rotating and the self-folding agitator 4 folds automatically, so that the top cover 2 can be unscrewed using the rotating handle 10 to take out the self-folding agitator 4 for cleaning. Specifically, after the self-folding agitator 4 stops rotating, the movable round rod 42 moves vertically upward under the pull of the pulling spring 43, and the movable round rod 42 pulls the folding rod 445 to rotate and fold through the connecting rod 444, so that several stirring blades 446 of the same group are folded together as much as possible to reduce the folding volume, which is convenient for lifting it upward from the opening of the reactor 1 for cleaning.
[0035] It should be noted that the above content only illustrates the technical idea of the utility model and cannot be used to limit the protection scope of the utility model. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the utility model. These improvements and modifications all fall within the protection scope of the claims of the utility model.
Claims
1. A stirring device for preparing pyrimidine, comprising a reaction kettle (1), characterized in that: A top cover (2) is installed on the top of the reaction kettle (1), a driving motor (3) is fixedly installed on the top cover (2), and a self-folding stirrer (4) is coaxially and fixedly connected to the output end of the driving motor (3); The self-folding agitator (4) comprises: a mounting tube (41) coaxially fixedly connected to the output end of the driving motor (3); a movable round rod (42) is slidably mounted in the inner cavity of the mounting tube (41); a pulling spring (43) in a contracted state is fixedly connected to the top of the movable round rod (42); and the top of the pulling spring (43) is fixedly connected to the top wall of the inner cavity of the mounting tube (41); and a plurality of groups of folding agitation components (44) are driven at the bottom of the movable round rod (42).
2. A stirring device for preparing pyrimidine according to claim 1, characterized in that: Each group of the folding stirring components (44) includes: a first rotating seat (441) fixedly connected to the bottom of the movable round rod (42), and a fixed plate (442) fixedly connected to the bottom of the mounting tube (41); the first rotating seat (441) is rotatably connected to a connecting rod (444); the fixed plate (442) is fixedly installed with a plurality of second rotating seats (443), and the number of the second rotating seats (443) is at least two; each of the second rotating seats (443) is rotatably connected to a folding rod (445); a plurality of mutually parallel folding rods (445) are rotatably connected to a plurality of mutually parallel stirring blades (446); and the end of the connecting rod (444) is rotatably connected to one of the folding rods (445).
3. A stirring device for preparing pyrimidine according to claim 2, characterized in that: The stirring blades (446) are arranged vertically, and a plurality of stirring blades (446) in the same group are arranged in different planes.
4. A stirring device for preparing pyrimidine according to claim 1, characterized in that: A plurality of groups of folding stirring components (44) are evenly distributed in a ring shape about the movable round rod (42).
5. A stirring device for preparing pyrimidine according to claim 1, characterized in that: The bottom of the movable round rod (42) is provided with a plurality of protrusions connected to the folding stirring assembly (44), and the mounting tube (41) is provided with a mounting groove adapted to the sliding of the movable round rod (42).
6. A stirring device for preparing pyrimidine according to claim 1, characterized in that: The edge of the top cover (2) is rotatably connected to a rotating handle (10).
7. A stirring device for preparing pyrimidine according to claim 1, characterized in that: The top of the reactor (1) is connected to a feeding hopper (8) and a one-way exhaust valve (7); the top of the feeding hopper (8) is threadedly connected to a sealing cover (9); the top of the one-way exhaust valve (7) is provided with an external thread; and the outside of the reactor (1) is wrapped with a heating jacket (5).