Safe and stable dropwise adding device in chemical preparation process

Abstract

The utility model relates to the technical field of chemical preparation dripping devices, and discloses a safe and stable dripping device in a chemical preparation process, which comprises a measuring cylinder and a mounting plate, the left side of the outer wall of the measuring cylinder is fixedly connected with a graduated scale, the bottom of the measuring cylinder is fixedly connected with a connecting pipe, and the outer wall of the connecting pipe is fixedly connected with a fixed sleeve plate. A threaded shaft is fixedly connected to the right side of the outer wall of the fixing sleeve plate, an adjuster is rotatably connected to the left side of the outer wall of the threaded shaft, the outer wall of the adjuster is rotatably connected to the inner wall of the connecting pipe, a conical shaft is slidably connected to the inner wall of the threaded shaft, and a sliding sleeve is fixedly connected to the outer wall of the conical shaft; the sliding sleeve slides in a sliding groove formed in the threaded shaft. According to the device, the outer wall of the connecting pipe fixedly connected to the bottom of the measuring cylinder is fixedly connected with the fixed sleeve plate, and the left side of the outer wall of the fixed sleeve plate is rotationally connected with the threaded shaft, so that a better preparation effect is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical preparation drop adding device technical field especially relates to a chemical preparation process safe and stable drop adding device. BACKGROUND

[0002] Dimethyl phenol is an important organic chemical raw material, has the extensive application in the medicine, pesticide, spice, dyestuff field, its chemical property is more active, in many chemical reactions, such as oxidation, alkylation, halogenation reaction, the control requirement of reaction condition is strict, especially the drop adding mode and rate of raw material, can significantly influence the progress, yield and selectivity of reaction, in the process of synthesizing certain drug intermediates with dimethyl phenol as raw material, too fast drop adding speed can lead to local concentration too high, and the excessive reaction or side reaction is caused, and the purity and yield of target product are reduced;And the drop adding process is unstable, and the rate fluctuation also makes the reaction difficult to control under the optimum condition.

[0003] Chemical preparation drop adding device is mainly composed of liquid storage part and drop adding control part, and the traditional drop funnel tool relies on gravity drop reagent, and the drop adding speed is mainly affected by the liquid level height in the container, the solution viscosity and the gravity acceleration factor, and it is difficult to realize accurate and stable flow control, in actual operation, with the drop adding of reagent, the liquid level gradually reduces, and the drop adding speed will gradually slow down, leading to the uneven change of reagent concentration in the reaction system, which is difficult to meet the demand of chemical preparation with strict reaction condition requirement, and when manually operating the drop funnel, it is difficult to maintain stable drop adding speed for a long time, and the fatigue and distraction of operating personnel will have great influence on drop adding precision, when the drop adding flow cannot be accurately controlled, a series of safety problems can be caused, in some exothermic reactions, if the reagent is dropped too fast, the reaction rate will rapidly rise, leading to the rapid increase of reaction system temperature, which can exceed the bearing capacity of reaction container, and serious accidents such as material overflow and explosion can be caused, on the contrary, if the drop adding is too slow, the reaction can be incomplete, and the unreacted raw material can accumulate in the system, when reaching a certain concentration, a violent reaction can be suddenly caused, and the same safety risk exists, in addition, for some reactions involving flammable, explosive or toxic reagents, unstable flow control can increase the possibility of reagent leakage and volatilization, and pose a threat to the health of operating personnel and the safety of laboratory. UTILITY MODEL CONTENTS

[0004] In order to make up for the above shortcomings, the utility model provides a kind of safe and stable dropping device in chemical preparation process, to improve the traditional drop funnel tool in prior art by gravity drop reagent, its drop acceleration is mainly influenced by liquid level height in container, solution viscosity and gravity acceleration factor, it is difficult to realize accurate and stable flow control, in actual operation, with the drop of reagent, liquid level gradually reduces, and drop acceleration will gradually slow down, leading to the problem of uneven change of reagent concentration in reaction system.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme: a kind of safe and stable dropping device in chemical preparation process, including measuring cylinder and mounting plate, the outer wall left side of the measuring cylinder is fixedly connected with scale, the bottom of the measuring cylinder is fixedly connected with connecting pipe, the outer wall of the connecting pipe is fixedly connected with fixed sleeve plate, the outer wall right side of the fixed sleeve plate is fixedly connected with threaded shaft, the outer wall left side of the threaded shaft is rotatably connected with regulator, the outer wall of the regulator is rotatably connected in the inner wall of connecting pipe, the inner wall of the threaded shaft is slidably connected with conical shaft, the outer wall of the conical shaft is fixedly connected with sliding sleeve, the sliding sleeve is slid on the sliding slot of threaded shaft, the outer wall of the threaded shaft is threadedly connected with nut sleeve, the outer wall of the nut sleeve is in contact with sliding sleeve, the top of the mounting plate is provided with auxiliary mechanism, and the auxiliary mechanism is used to assist drop chemical reagent.

[0006] As a further description of the above technical solution:

[0007] The auxiliary mechanism includes placement table, the bottom of the placement table is fixedly connected to the top of the mounting plate, the inner wall left and right sides of the placement table are fixedly connected with connecting sleeve, a plurality of the inner walls of the connecting sleeve are fixedly connected with spring, the other end of the spring is fixedly connected with connecting shaft, the outer wall of the connecting shaft is fixedly connected with connecting rod to the outside, the top of the connecting rod is fixedly connected with clamping plate, and the other end of the connecting shaft is fixedly connected with H-shaped plate.

[0008] As a further description of the above technical solution:

[0009] The top rear side of the sliding sleeve is fixedly connected with support plate, and the top of the support plate is fixedly connected with fixed plate.

[0010] As a further description of the above technical solution:

[0011] The top left side of the fixed plate is fixedly connected with liquid storage cylinder, the middle part of the fixed plate is fixedly connected with fixed shaft, and the inner wall of the fixed shaft is fixedly connected to the middle part of the outer wall of the measuring cylinder.

[0012] As a further description of the above technical solution:

[0013] The outer wall front side of the liquid storage cylinder is fixedly connected with a switch device, and the other end of the switch device is fixed to the outer wall rear top of the measuring cylinder.

[0014] As a further description of the above technical solution:

[0015] The top left and right sides of the measuring cylinder are fixedly connected with protection strips, and multiple protection strips are symmetrically arranged on the top left and right sides of the measuring cylinder.

[0016] As a further description of the above technical solution:

[0017] The top of the sliding sleeve is provided with a dropping cylinder, and the outer wall front and rear sides of the sliding sleeve are fixedly connected with protection plates.

[0018] As a further description of the above technical solution:

[0019] The top front and rear sides of the measuring cylinder are fixedly connected with handles, and the top front and rear sides of the sliding sleeve are fixedly connected with protection strips.

[0020] The utility model has the advantages of the following beneficial effects:

[0021] 1、 in the utility model, the outer wall of the connecting pipe fixedly connected with the bottom of the measuring cylinder is fixedly connected with the fixed sleeve plate, the left side of the outer wall of the fixed sleeve plate is rotatably connected with the threaded shaft, the inner wall of the connecting pipe is fixedly connected with the rear side of the threaded shaft, and the conical shaft rotatably connected with the inner wall of the threaded shaft is pushed by external force, so that the adjuster mounted on the outer wall of the threaded shaft can be tightly clamped, and better preparation effect is achieved.

[0022] 2、 in the utility model, in order to better assist the drop of the chemical reagent, the inner wall left and right sides of the placing table are fixedly connected with the connecting sleeve, the inner wall of the connecting sleeve is fixedly connected with the spring, the other end of the spring is fixedly connected with the connecting shaft, the connecting rod is fixedly connected with the bottom close to the other end of the connecting shaft, and the H-shaped plate is fixedly connected with the other end of the connecting shaft, so that the inner wall of the placing table is slidably limited and the clamping operation is facilitated. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A front side perspective view of the safe and stable drop device measuring cylinder in the chemical preparation process is provided for the utility model.

[0024] Figure 2 A partial structural view of the safe and stable drop device liquid storage cylinder in the chemical preparation process is provided for the utility model.

[0025] Figure 3 A partial structural view of the safe and stable drop device connecting pipe in the chemical preparation process is provided for the utility model.

[0026] Figure 4 A partial structure display drawing of the safe and stable drop adding device regulator in the chemical preparation process is provided for the utility model;

[0027] Figure 5 A partial structure schematic view of the safe and stable drop adding device connecting shaft in the chemical preparation process is provided for the utility model.

[0028] Legend:

[0029] 1, measuring cylinder; 2, auxiliary mechanism; 201, connecting sleeve; 202, spring; 203, connecting shaft; 204, H-shaped plate; 205, connecting rod; 206, clamping plate; 207, placing table; 3, scale; 4, connecting pipe; 5, fixed sleeve plate; 6, threaded shaft; 7, regulator; 8, nut sleeve; 9, tapered shaft; 10, sliding sleeve; 11, mounting plate; 12, support plate; 13, fixed plate; 14, liquid storage cylinder; 15, switch; 16, fixed shaft; 17, drop adding cylinder; 18, handle; 19, protective strip; 20, protective strip; 21, protective plate. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

[0031] Please refer to the drawings in the embodiments of the utility model Figure 2 - the drawings in the embodiments of the utility model Figure 4The utility model provides a kind of embodiment of safe and stable dropwise adding device in chemical preparation process, including measuring cylinder 1 and mounting plate 11, the left side of the outer wall of measuring cylinder 1 is fixedly connected with scale 3, the bottom of measuring cylinder 1 is fixedly connected with connecting pipe 4, the outer wall of connecting pipe 4 is fixedly connected with fixed sleeve plate 5, the right side of the outer wall of fixed sleeve plate 5 is fixedly connected with threaded shaft 6, the left side of the outer wall of threaded shaft 6 is rotatably connected with regulator 7, the outer wall of regulator 7 is rotatably connected in the inner wall of connecting pipe 4, the inner wall of threaded shaft 6 is slidably connected with conical shaft 9, the outer wall of conical shaft 9 is fixedly connected with sliding sleeve 10, the outer wall of regulator 7 is rotatably connected on the inner wall of connecting pipe 4, ensure the close cooperation between regulator 7 and connecting pipe 4, the outer wall of this conical shaft 9 is fixedly connected with a sliding sleeve 10, sliding sleeve 10 can be smoothly slid in the sliding slot of threaded shaft 6, to realize the accurate control of liquid flow, sliding sleeve 10 is slid in the sliding slot of threaded shaft 6, the outer wall of threaded shaft 6 is threadedly connected with nut sleeve 8, the outer wall of nut sleeve 8 is in contact with sliding sleeve 10, the top of mounting plate 11 is provided with auxiliary mechanism 2, and auxiliary mechanism 2 is used to assist dropwise adding chemical reagent;

[0032] Specifically, the left side of the outer wall of measuring cylinder 1 is designed to be fixedly connected with an accurate scale 3, so that the user can accurately read the volume of liquid, the bottom of measuring cylinder 1 is fixedly connected with a connecting pipe 4, the outer wall of the connecting pipe 4 is fixedly connected with a firm fixed sleeve plate 5, the right side of the outer wall of fixed sleeve plate 5 is further fixedly connected with a threaded shaft 6, the left side of the outer wall of the threaded shaft 6 is rotatably connected with a regulator 7, so that the user can finely control the flow of liquid in the connecting pipe 4 by the regulator 7, the outer wall of nut sleeve 8 is in close contact with sliding sleeve 10, to ensure the stability and reliability of the whole device, the top of mounting plate 11 is provided with an auxiliary mechanism 2, which is used to assist the user to drop chemical reagent, so that the whole operation process is more convenient and safe.

[0033] Please refer to the attached Figure 3 -attached Figure 5 Auxiliary mechanism 2 includes placing table 207, the bottom of placing table 207 is fixedly connected to the top of mounting plate 11, the inner wall of placing table 207 is fixedly connected with connecting sleeve 201 on left and right sides, a plurality of the inner wall of connecting sleeve 201 is fixedly connected with spring 202, the other end of spring 202 is fixedly connected with connecting shaft 203, the outer wall of connecting shaft 203 is fixedly connected with connecting rod 205 outward, the top of connecting rod 205 is fixedly connected with clamping plate 206, the other end of connecting shaft 203 is fixedly connected with H-shaped plate 204;

[0034] Specifically, the inner wall of the placement table 207 is designed to be fixedly connected with the connecting sleeves 201, which are carefully arranged on the inner wall of the placement table 207 to ensure the stability and functionality of the structure. The springs 202 are cleverly arranged inside the sleeves on the inner wall of the connecting sleeves 201 to provide the necessary elastic force. The other end of each spring 202 is fixedly connected with the connecting shaft 203 to ensure the transmission and conversion of the force of the spring 202. The outer wall of the connecting shaft 203 is fixedly connected with the connecting rod 205 on the outward side. The top of the connecting rod 205 is fixedly connected with the clamping plate 206, which enables the clamping plate 206 to be stably fixed on the top of the connecting rod 205. In addition, the other end of the connecting shaft 203 is fixedly connected with the H-shaped plate 204, which not only increases the strength of the structure but also provides an additional support point to ensure the stability and reliability of the entire device.

[0035] Please refer to the accompanying drawings Figure 1 - the accompanying drawings Figure 3 Specifically, the top rear side of the sliding sleeve 10 is fixedly connected with the support plate 12. The top of the support plate 12 is fixedly connected with the fixed plate 13. The top left side of the fixed plate 13 is fixedly connected with the liquid storage cylinder 14. The middle of the fixed plate 13 is fixedly connected with the fixed shaft 16, which is fixedly connected with the inner wall of the graduated cylinder 1. The outer wall of the liquid storage cylinder 14 is fixedly connected with the switch 15 on the front side. The inner wall of the fixed shaft 16 tightly fits with the middle of the outer wall of the graduated cylinder 1, ensuring the stability and accuracy of the graduated cylinder 1. The switch 15 is specially designed on the front side of the outer wall of the liquid storage cylinder 14, and the other end of the switch 15 is fixedly connected with the top rear side of the outer wall of the graduated cylinder 1.

[0036] Specifically, the top rear side of the sliding sleeve 10 is fixedly connected with the support plate 12. The top of the support plate 12 is fixedly connected with the fixed plate 13. The top left side of the fixed plate 13 is fixedly connected with the liquid storage cylinder 14. The middle of the fixed plate 13 is fixedly connected with the fixed shaft 16, which is fixedly connected with the inner wall of the graduated cylinder 1. The outer wall of the liquid storage cylinder 14 is fixedly connected with the switch 15 on the front side. The inner wall of the fixed shaft 16 tightly fits with the middle of the outer wall of the graduated cylinder 1, ensuring the stability and accuracy of the graduated cylinder 1. The switch 15 is specially designed on the front side of the outer wall of the liquid storage cylinder 14, and the other end of the switch 15 is fixedly connected with the top rear side of the outer wall of the graduated cylinder 1.

[0037] Please refer to the accompanying drawings Figure 1 - the accompanying drawings Figure 3 Specifically, the top rear side of the sliding sleeve 10 is fixedly connected with the support plate 12. The top of the support plate 12 is fixedly connected with the fixed plate 13. The top left side of the fixed plate 13 is fixedly connected with the liquid storage cylinder 14. The middle of the fixed plate 13 is fixedly connected with the fixed shaft 16, which is fixedly connected with the inner wall of the graduated cylinder 1. The outer wall of the liquid storage cylinder 14 is fixedly connected with the switch 15 on the front side. The inner wall of the fixed shaft 16 tightly fits with the middle of the outer wall of the graduated cylinder 1, ensuring the stability and accuracy of the graduated cylinder 1. The switch 15 is specially designed on the front side of the outer wall of the liquid storage cylinder 14, and the other end of the switch 15 is fixedly connected with the top rear side of the outer wall of the graduated cylinder 1.

[0038] Specific, the top of the sliding sleeve 10 is mounted a dropping cylinder 17, in order to facilitate the precise liquid drop operation, in order to further protect the sliding sleeve 10, its outer wall is fixedly connected with the front and rear protection plate 21, these protection plate 21 can effectively prevent accidental damage to the sliding sleeve 10 in the process of use, in order to facilitate user operation, the top of the cylinder 1 is fixedly connected with the handle 18, so that the user can hold the cylinder 1 firmly, finally in order to ensure that the top of the cylinder 1 is also fully protected on both sides, the top of the sliding sleeve 10 is fixedly connected with the protective strip 19 on both sides, these protective strip 19 can effectively prevent damage to the top of the cylinder 1 in the process of use.

[0039] Working principle: the bottom of the cylinder 1 is fixedly connected with the connecting pipe 4, the outer wall of the connecting pipe 4 is fixedly connected with the fixed sleeve plate 5, the left side of the outer wall of the fixed sleeve plate 5 is rotatably connected with the threaded shaft 6, and the inner wall of the connecting pipe 4 is fixedly connected with the threaded shaft 6 on the rear side, the tapered shaft 9 is slidably connected with the inner wall of the threaded shaft 6, which is pushed by external force, so that it can be tightly clamped with the adjuster 7 installed on the outer wall of the threaded shaft 6, and the sliding sleeve 10 is fixedly connected with the outer wall of the tapered shaft 9, which is fixed by the nut sleeve 8 threadedly connected with the outer wall of the threaded shaft 6, so as to control the flow rate during the preparation of chemical reagents, and achieve better preparation effect;

[0040] In order to better assist the chemical reagent drop, the inner wall of the placing table 207 is fixedly connected with the connecting sleeve 201 on both sides, the inner wall of the connecting sleeve 201 is fixedly connected with the spring 202, and the other end of the spring 202 is fixedly connected with the connecting shaft 203, the connecting rod 205 is fixedly connected with the connecting shaft 203 on the bottom close to the other end, the clamping plate 206 fixed on the connecting rod 205 can assist in clamping the dropping cylinder 17 through the tension of the spring 202, and the H-shaped plate 204 is fixedly connected with the other end of the connecting shaft 203 for sliding limiting on the inner wall of the placing table 207, which is also convenient for clamping operation.

[0041] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for some of the technical features, any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A safe and stable dropping device in chemical preparation process, comprising a measuring cylinder (1) and a mounting plate (11), characterized in that: The outer wall left side of the measuring cylinder (1) is fixedly connected with a scale (3), the bottom of the measuring cylinder (1) is fixedly connected with a connecting pipe (4), the outer wall of the connecting pipe (4) is fixedly connected with a fixed sleeve plate (5), the outer wall right side of the fixed sleeve plate (5) is fixedly connected with a threaded shaft (6), the outer wall left side of the threaded shaft (6) is rotatably connected with an adjuster (7), the outer wall of the adjuster (7) is rotatably connected to the inner wall of the connecting pipe (4), the inner wall of the threaded shaft (6) is slidably connected with a tapered shaft (9), the outer wall of the tapered shaft (9) is fixedly connected with a sliding sleeve (10), the sliding sleeve (10) slides in the sliding groove formed in the threaded shaft (6), the outer wall of the threaded shaft (6) is threadedly connected with a nut sleeve (8), the outer wall of the nut sleeve (8) is in contact with the sliding sleeve (10), the top of the mounting plate (11) is provided with an auxiliary mechanism (2), and the auxiliary mechanism (2) is used for assisting the dropwise addition of chemical reagents.

2. A safe and stable dropping device in chemical preparation process according to claim 1, characterized in that: The auxiliary mechanism (2) comprises a placing table (207), the bottom of the placing table (207) is fixedly connected to the top of the mounting plate (11), the inner walls of the left and right sides of the placing table (207) are fixedly connected with connecting sleeves (201), the inner walls of the connecting sleeves (201) are fixedly connected with springs (202), the other ends of the springs (202) are fixedly connected with connecting shafts (203), the outer walls of the connecting shafts (203) are fixedly connected with connecting rods (205) on the outward side, the top of the connecting rod (205) is fixedly connected with a clamping plate (206), and the other end of the connecting shaft (203) is fixedly connected with an H-shaped plate (204).

3. A safe and stable dropping device in chemical preparation process according to claim 1, characterized in that: The top rear side of the sliding sleeve (10) is fixedly connected with a supporting plate (12), and the top of the supporting plate (12) is fixedly connected with a fixed plate (13).

4. A safe and stable dropping device in chemical preparation process according to claim 3, characterized in that: The top left side of the fixed plate (13) is fixedly connected with a liquid storage cylinder (14), the middle of the fixed plate (13) is fixedly connected with a fixed shaft (16), and the inner wall of the fixed shaft (16) is fixedly connected to the middle of the outer wall of the measuring cylinder (1).

5. A safe and stable dropping device in chemical preparation process according to claim 4, characterized in that: The outer wall front side of the liquid storage cylinder (14) is fixedly connected with an on-off device (15), and the other end of the on-off device (15) is fixed to the outer wall rear side top of the measuring cylinder (1).

6. A safe and stable dropping device in chemical preparation process according to claim 1, characterized in that: The top left and right sides of the measuring cylinder (1) are fixedly connected with protection strips (20), and the top left and right sides of the measuring cylinder (1) are symmetrically processed.

7. A safe and stable dropping device in chemical preparation process according to claim 1, characterized in that: The top of the sliding sleeve (10) is provided with a dropwise addition cylinder (17), and the front and rear sides of the outer wall of the sliding sleeve (10) are fixedly connected with protection plates (21).

8. A safe and stable dropping device in chemical preparation process according to claim 1, characterized in that: The top front and rear sides of the measuring cylinder (1) are fixedly connected with handles (18), and the top front and rear sides of the sliding sleeve (10) are fixedly connected with protection strips (19).

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