Quantitative liquid adding device
Through the design of the quantitative liquid adding device, the use of the liquid adding drive mechanism and the elastic lifting component, the precise quantitative addition of ammonia water is achieved, which solves the problem of inaccurate ammonia addition, ensures that the pH value of the reaction solution is stable at 4-5, and improves the accuracy and efficiency of reaction control.
Patent Information
- Application Number
- CN202422130349.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-08-30
AI Technical Summary
In the prior art, it is difficult to achieve precise quantitative addition of ammonia water during the preparation of diallyl products, resulting in an unstable pH value of the reaction solution. The technical problem affecting the quantitative liquid addition device of the reaction solution is that the addition of ammonia water is not precise and the pH value of the reaction solution cannot be effectively controlled within the range of 4-5.
A quantitative liquid adding device is used, and the opening and closing of the liquid adding device is controlled by the liquid adding drive mechanism. The design of the elastic lifting component and the drive disk is used to ensure the quantitative output of ammonia water. Combined with the online pH meter, automatic control is achieved to ensure that the pH value of the reaction solution is within the range of 4-5.
The precise quantitative addition of ammonia water is achieved, ensuring that the pH value of the reaction solution is stable at 4-5, thereby improving the accuracy and efficiency of reaction control.
Smart Images
Figure CN223351629U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chemical product production equipment, and more specifically, to a quantitative liquid adding device. Background Art
[0002] Diallyl product is an important raw material for the production of disperse blue 291 dye. During the preparation of diallyl product, ammonia water needs to be added to initiate a chemical reaction. During the reaction, the pH value of the solution needs to be maintained in the range of 4-5. Therefore, the addition of ammonia water needs to be precisely controlled and quantitatively added. When producing diallyl products, the company needs a device that can quantitatively add ammonia water, which is the reason for this case. Utility Model Content
[0003] The purpose of the present utility model is to solve the needs of the above-mentioned prior art and provide a quantitative liquid adding device. The ammonia water of the device is pumped from the material liquid tank to the liquid adder, and the liquid adder is controlled to open or close by a liquid adding drive mechanism. The opening time of the liquid adder is fixed each time, and the demand for quantitative output of ammonia water can be met within the fixed opening time.
[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0005] A quantitative liquid adding device comprises a material liquid tank, an instrument rack and a liquid adder, wherein the liquid adder is fixedly mounted on the instrument rack, the material liquid tank pipeline is connected to the liquid adder, an infusion pump is installed on the connecting pipeline between the material liquid tank and the liquid adder, the liquid adder comprises a main pipe, a liquid outlet pipe and a control rod, the liquid outlet pipe is connected to the bottom of the main pipe, the control rod is movably mounted on the main pipe, the liquid outlet pipe can be closed when the control rod is lowered, and the liquid outlet pipe can be opened when the control rod is raised, a liquid adding drive mechanism is installed on the instrument rack, and the liquid adding drive mechanism is transmission connected to the control rod.
[0006] Furthermore, a liquid inlet is provided on the side wall of the main pipe, the liquid inlet is communicated with the inner cavity of the main pipe, and the liquid inlet pipeline is connected to the material liquid tank.
[0007] Furthermore, an elastic lifting assembly is installed in the inner cavity of the main pipe, and the lower end of the control rod extends and is inserted into the main pipe and connected to the elastic lifting assembly.
[0008] Furthermore, the elastic lifting assembly includes a piston and a spring, the piston is matched and installed in the inner cavity of the main pipe, the lower end of the control rod is connected to the piston, the spring is sleeved on the outside of the control rod, one end of the spring is connected to the top of the inner cavity of the main pipe, and the other end is connected to the piston.
[0009] Furthermore, the liquid outlet pipe is connected to the main pipe, and a tapered opening is provided at the connection point. The lower end surface of the piston is connected to a linkage rod, and a plug is installed at the bottom of the linkage rod. The shape of the plug is adapted to the tapered opening.
[0010] Furthermore, the liquid adding drive mechanism includes a motor and a drive disk, the motor is fixedly mounted on the instrument frame, the drive disk is connected to the output end of the motor, and the top of the control rod maintains contact with the outer edge wall of the drive disk.
[0011] Furthermore, a convex arc surface and a concave arc surface are provided on the outer edge wall of the driving disk. When the top of the control rod contacts the convex arc surface, the control rod is in a downward state, the plug blocks the tapered mouth, and the piston closes the communication port between the liquid inlet pipe mouth and the inner cavity of the main pipe. When the top of the control rod contacts the concave arc surface, the control rod is in an upward state, the plug disengages from the tapered mouth, and the piston opens the communication port between the liquid inlet pipe mouth and the inner cavity of the main pipe.
[0012] Furthermore, a flange mounting seat is connected to the instrument rack.
[0013] The beneficial effects of the utility model are:
[0014] The ammonia water of the utility model is pumped from the material liquid tank to the liquid charger, and the liquid charger is controlled to be opened or closed by the liquid charging drive mechanism. The opening time of the liquid charger is determined by the length of the concave arc surface of the driving disk. Each time the driving disk rotates once, the liquid charger is opened for a fixed period of time and can output a fixed amount of ammonia water within the fixed opening time. The utility model controls the liquid charging amount by controlling the opening time, and has the advantage of accurate liquid charging. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 Schematic diagram of the structure of a quantitative liquid adding device in this embodiment;
[0016] Figure 2 1 is a side view of the installation structure of the liquid charger and the liquid charging drive mechanism in this embodiment;
[0017] Figure 3 Schematic diagram of the structure of the liquid charger in this embodiment when it is in the liquid charging closed state;
[0018] Figure 4 Schematic diagram of the structure of the liquid charger in this embodiment when it is in the liquid charging open state.
[0019] Figure numerals: material liquid tank 1, infusion pump 11, instrument rack 2, flange mounting base 21, liquid charger 3, main pipe 31, liquid inlet 311, liquid outlet 32, tapered mouth 321, control rod 33, elastic lifting assembly 34, piston 341, spring 342, linkage rod 35, plug 36, liquid adding drive mechanism 4, motor 41, drive disk 42, convex arc surface 421, concave arc surface 422. DETAILED DESCRIPTION
[0020] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.
[0021] like Figures 1-4 The quantitative liquid adding device shown in the figure includes a material liquid tank 1, an instrument rack 2 and a liquid adder 3. The liquid adder 3 is fixedly mounted on the instrument rack 2. The material liquid tank 1 is connected to the liquid adder 3 through a pipeline. The material liquid tank 1 contains ammonia water that needs to be added in the diallyl preparation reaction. An infusion pump 11 is installed on the connecting pipeline between the material liquid tank 1 and the liquid adder 3. The ammonia water in the material liquid tank 1 can be continuously output to the liquid adder 3 through the infusion pump 11. Figure 2 As shown, the instrument rack 2 is connected to a flange mounting base 21, which enables the instrument rack 2 to be fixed to the diallyl preparation reactor. The liquid adder 3 is installed at the ammonia filling position through the instrument rack 2. The liquid adder 3 includes a main pipe 31, a liquid outlet pipe 32 and a control rod 33. The liquid outlet pipe 32 is connected to the bottom of the main pipe 31 and is connected to the main pipe 31. The control rod 33 is movable and installed on the main pipe 31. When the control rod 33 is lowered, the liquid outlet pipe 32 can be closed. At this time, ammonia cannot be added to the reaction solution. When the control rod 33 is raised, the liquid outlet pipe 32 can be opened. At this time, ammonia can be added to the reaction solution. A liquid adding drive mechanism 4 is installed on the instrument frame 2, and the liquid adding drive mechanism 4 is transmission-connected with the control rod 33. The lifting movement of the control rod 33 is controlled by the liquid adding drive mechanism 4. Since the amount of liquid discharged by the liquid outlet pipe 32 per unit time is fixed, the amount of ammonia water added can be controlled by controlling the rising time of the control rod 33. An online pH meter is installed in the diallyl preparation reactor to actually measure the pH value of the solution. The utility model is linked to the online pH meter, and the pH value of the reaction solution is controlled to be maintained in the range of 4-5 through the quantitative addition of ammonia water in the utility model.
[0022] like Figure 3 and Figure 4As shown, a liquid inlet port 311 is provided on the side wall of the main pipe 31, and the liquid inlet port 311 is connected to the inner cavity of the main pipe 31. A connecting interface is formed between the liquid inlet port 311 and the inner cavity of the main pipe 31. The liquid inlet port 311 pipeline is connected to the material liquid tank 1. The ammonia water in the material liquid tank 1 is pumped into the inner cavity of the main pipe 31 through the liquid inlet port 311, and then output from the liquid outlet pipe 32.
[0023] like Figure 3 and Figure 4 As shown, an elastic lifting assembly 34 is installed in the inner cavity of the main tube 31, and the lower end of the control rod 33 extends and is inserted into the main tube 31 and is connected to the elastic lifting assembly 34. The elastic lifting assembly 34 can perform lifting and lowering movements together with the control rod 33. The elastic lifting assembly 34 includes a piston 341 and a spring 342. The piston 341 is matched and installed in the inner cavity of the main tube 31, and the lower end of the control rod 33 is connected to the piston 341. The spring 342 is sleeved on the outside of the control rod 33. One end of the spring 342 is connected to the top of the inner cavity of the main tube 31, and the other end is connected to the piston 341. When the control rod 33 is forced to move downward, the piston 341 can be pushed to move downward together. At this time, the spring 342 will be stretched. After the control rod 33 loses the downward force, under the action of the restoring force of the spring 342, the piston 341 and the control rod 33 can perform upward movement together.
[0024] like Figure 3 and Figure 4 As shown, the liquid outlet pipe 32 is connected to the main pipe 31, and a tapered mouth 321 is provided at the connection point. The lower end surface of the piston 341 is connected to a linkage rod 35, and the linkage rod 35 can move with the piston 341. A plug 36 is installed at the bottom of the linkage rod 35. The shape of the plug 36 is adapted to the tapered mouth 321. The tapered design of the tapered mouth 321 is for easy opening and closing. The effective area of the plug 36 is also tapered. After the linkage rod 35 descends with the piston 341, the plug 36 can be inserted into the position of the tapered mouth 321 to achieve the closure of the tapered mouth 321. After the tapered mouth 321 is closed, the liquid charger 3 cannot add liquid.
[0025] like Figure 2 As shown, the liquid adding drive mechanism 4 includes a motor 41 and a drive disk 42. The motor 41 is fixedly mounted on the instrument frame 2. The drive disk 42 is connected to the output end of the motor 41. The top of the control rod 33 keeps in contact with the outer wall of the drive disk 42. The motor 41 can drive the drive disk 42 to rotate. The motor 41 is linked to the online pH meter installed in the diallyl preparation reactor. When the pH value changes to the point where ammonia water needs to be added, the motor 41 is started. Each time the motor 41 is started, it only drives the drive disk 42 to rotate one circle. The outer shape of the drive disk 42 changes, so that the lifting motion control of the control rod 33 can be realized. Figure 3 and Figure 4As shown, a convex arc surface 421 and a concave arc surface 422 are provided on the outer edge wall of the driving disk 42. When the top of the control rod 33 contacts the convex arc surface 421, the control rod 33 is in a downward state, and the plug 36 blocks the tapered port 321, so that the liquid outlet pipe 32 cannot discharge liquid. The piston 341 also moves downward to close the communication port between the liquid inlet port 311 and the inner cavity of the main pipe 31, and ammonia water cannot be input into the inner cavity of the main pipe 31. At this time, the liquid charger 3 is in a non-liquid adding state (such as Figure 3 The initial state of the liquid adder 3 is this state, that is, the driving disk 42 initially contacts the top of the control rod 33 with the convex arc surface 421. During the contact between the convex arc surface 421 and the top of the control rod 33, the liquid adder 3 is always in a non-liquid adding state. As the driving disk 42 rotates, the top of the control rod 33 contacts the concave arc surface 422. When the top of the control rod 33 contacts the concave arc surface 422, the control rod 33 loses the downward pressure. Under the restoring force of the spring 342 of the elastic lifting assembly 34, the control rod 33 switches to the upward state. After the control rod 33 moves upward, the piston 341, the linkage rod 35 and the plug 36 all move upward together, and the plug 36 disengages from the tapered mouth 321. After the piston 341 moves upward, The connecting port between the liquid inlet pipe 311 and the inner cavity of the main pipe 31 will also be opened, and the ammonia water forms a passage in the liquid adder 3. The ammonia water is continuously fed into the inner cavity of the main pipe 31 and output from the liquid outlet pipe 32. The amount of ammonia water output per unit time is fixed, and the motor 41 drives the drive disk 42 to rotate at a constant speed. The length of the concave arc surface 422 determines the opening and liquid discharge time of the liquid adder 3. Therefore, each time the motor 41 drives the drive disk 42 to rotate one circle, a fixed amount of ammonia water can be added. The utility model has the advantage of accurate ammonia water addition during use. If the amount of ammonia water added each time needs to be changed, it is only necessary to replace the drive disk 42 (different spare drive disks 42 have concave arc surfaces 422 of different lengths). This operation is performed before the preparation reaction.
[0026] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.
Claims
1. A quantitative liquid adding device, characterized in that: The invention comprises a material liquid tank (1), an instrument frame (2) and a liquid adder (3), wherein the liquid adder (3) is fixedly mounted on the instrument frame (2), a pipeline of the material liquid tank (1) is connected to the liquid adder (3), an infusion pump (11) is installed on the connecting pipeline between the material liquid tank (1) and the liquid adder (3), the liquid adder (3) comprises a main pipe (31), a liquid outlet pipe (32) and a control rod (33), the liquid outlet pipe (32) is connected to the bottom of the main pipe (31), the control rod (33) is movable and can be lifted and lowered on the main pipe (31), the control rod (33) can close the liquid outlet pipe (32) when it descends, and can open the liquid outlet pipe (32) when it ascends, and a liquid adding drive mechanism (4) is installed on the instrument frame (2), and the liquid adding drive mechanism (4) is transmission-connected to the control rod (33).
2. A quantitative liquid adding device according to claim 1, characterized in that: A liquid inlet (311) is provided on the side wall of the main pipe (31), the liquid inlet (311) is communicated with the inner cavity of the main pipe (31), and the pipeline of the liquid inlet (311) is connected to the material liquid tank (1).
3. A quantitative liquid adding device according to claim 2, characterized in that: An elastic lifting assembly (34) is installed in the inner cavity of the main pipe (31), and the lower end of the control rod (33) extends and is inserted into the main pipe (31) and is connected to the elastic lifting assembly (34).
4. A quantitative liquid adding device according to claim 3, characterized in that: The elastic lifting assembly (34) includes a piston (341) and a spring (342). The piston (341) is matched and installed in the inner cavity of the main pipe (31). The lower end of the control rod (33) is connected to the piston (341). The spring (342) is sleeved on the outside of the control rod (33). One end of the spring (342) is connected to the top of the inner cavity of the main pipe (31), and the other end is connected to the piston (341).
5. A quantitative liquid adding device according to claim 4, characterized in that: The liquid outlet pipe (32) is connected to the main pipe (31), and a tapered opening (321) is provided at the connection point. The lower end surface of the piston (341) is connected to a linkage rod (35), and a plug (36) is installed at the bottom of the linkage rod (35). The shape of the plug (36) is adapted to the tapered opening (321).
6. A quantitative liquid adding device according to claim 5, characterized in that: The liquid adding drive mechanism (4) comprises a motor (41) and a drive disk (42). The motor (41) is fixedly mounted on the instrument frame (2). The drive disk (42) is connected to the output end of the motor (41). The top of the control rod (33) maintains contact with the outer edge wall of the drive disk (42).
7. A quantitative liquid adding device according to claim 6, characterized in that: A convex arc surface (421) and a concave arc surface (422) are provided on the outer edge wall of the driving disk (42). When the top of the control rod (33) contacts the convex arc surface (421), the control rod (33) is in a downward state, the plug (36) blocks the tapered opening (321), and the piston (341) closes the communication port between the liquid inlet pipe opening (311) and the inner cavity of the main pipe (31). When the top of the control rod (33) contacts the concave arc surface (422), the control rod (33) is in an upward state, the plug (36) is separated from the tapered opening (321), and the piston (341) opens the communication port between the liquid inlet pipe opening (311) and the inner cavity of the main pipe (31).
8. A quantitative liquid adding device according to claim 1, characterized in that: A flange mounting seat (21) is connected to the instrument frame (2).