Chemical rectification device

Abstract

The utility model provides a chemical rectification device, and relates to the technical field of chemical rectification, the chemical rectification device comprises a stock solution filter box, the top of the stock solution filter box is fixedly provided with a heating box, the left side of the stock solution filter box is fixedly provided with a mounting rack, one side of the mounting rack is fixedly provided with a motor, and the output end of the motor is fixedly provided with a first screw rod; a plurality of limiting rods are fixedly mounted on the inner side of the stock solution filtering box and the inner side of the mounting frame, a filter screen plate can be sealed through a triethyl phosphite filtering and rectifying assembly and a sealing rubber ring, and liquid to be rectified can only enter the inner side of the heating box through the filter screen plate to be heated; the filter screen plate can filter impurities, the heating box can only heat pure liquid, steam generated after heating can enter the condenser through the steam discharge pipeline to be cooled, condensed liquid can be discharged through the liquid discharge pipe, and the rectification effect of the device is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of chemical rectification, especially to a chemical rectification device. BACKGROUND

[0002] Rectification is a kind of distillation method that uses reflux to highly purify and separate liquid mixture, and it is the most common mixture separation operation in the chemical field. The existing chemical rectification method vaporizes raw materials through multiple heating, and then condenses the vaporized raw materials to obtain purified materials. This process can effectively purify the chemical raw liquid, but it is difficult to separate the entrained fixed impurities. In a high-temperature environment, part of the fixed impurities may be liquefied and mixed, thereby reducing the rectification efficiency.

[0003] Triethyl phosphite is an important organic phosphorus chemical intermediate, widely used in the synthesis of pesticides, medicines and flame retardants. The rectification and purification in its production process is a key link. The traditional rectification device has low separation efficiency, high energy consumption, and poor operation stability, and other technical bottlenecks. Especially when dealing with triethyl phosphite, a heat-sensitive material, decomposition and deterioration may occur due to long residence time at high temperature. The chemical rectification device provided by the utility model significantly improves the separation efficiency and product purity by optimizing the structure of the tower internals and the energy recovery system. Its application scenarios include the continuous rectification section of pesticide intermediate production enterprises, as well as small-scale and pilot-scale research in fine chemical laboratories. This device is not only suitable for the purification of triethyl phosphite, but also can be extended to the separation and purification of other similar organic phosphorus compounds and ester derivatives with a boiling point range. It has a significant advantage in production scenarios that require precise control of temperature gradient and reflux ratio, providing technical support for the efficiency and greenness of chemical production.

[0004] Publication No. CN217612991 U discloses a chemical rectification device, which includes a support frame, a rectification tank, a condenser, a reflux pipe, a reheater, a valve pipe, and a filtering mechanism. The support frame is connected with the rectification tank at the top. The rectification tank is provided with an inlet on the left side. The rectification tank is connected with the reflux pipe at the top. The rectification tank is also connected with the reflux pipe on the right side of the upper part. The condenser is connected between the reflux pipes on the right side. The reheater is connected between the rectification tank and the reflux pipe on the left side. The valve pipe is connected to the bottom of the reflux pipe on the left side. The filtering mechanism is arranged on the left side of the rectification tank.

[0005] When in use, the existing device needs to filter the liquid during the rectification process. The solid raw materials will block the upper part of the filter screen, and the staff needs to clean the filter screen regularly. The rectification device is sealed, and the disassembly and assembly of the filter screen are relatively cumbersome, which reduces the work efficiency. Therefore, we propose a chemical rectification device. Utility model content

[0006] Therefore, the chemical rectifying device is provided in the application, which solves the above technical problems to some extent.

[0007] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0008] A chemical rectifying device, comprising a raw liquid filter box, a heating box is fixedly installed on the top of the raw liquid filter box, a mounting bracket is fixedly installed on the left side of the raw liquid filter box, a motor is fixedly installed on one side of the mounting bracket, a first lead screw is fixedly installed on the output end of the motor, a plurality of limiting rods are fixedly installed on the inner side of the raw liquid filter box and the mounting bracket, a triethyl phosphite filtering and rectifying assembly is arranged above the raw liquid filter box, the first lead screw and the limiting rods;

[0009] The triethyl phosphite filtering and rectifying assembly comprises a sliding frame, sealing baffles, a connecting bracket, a filter screen and connecting blocks, the sliding frame is screw-mounted on the outer side of the first lead screw, the sealing baffles are fixedly installed on the left and right sides of the sliding frame, the connecting bracket is fixedly installed on one side of the sliding frame, the filter screen is arranged on one side of the connecting bracket, and the connecting blocks are fixedly installed on the four corners of one side of the filter screen.

[0010] Preferably, a water inlet pipeline is fixedly installed on one side of the raw liquid filter box, a transmission gear is fixedly installed on the outer side of each of the first lead screws, adjacent two transmission gears are engaged, and a filter element moving and disassembling assembly is arranged above the triethyl phosphite filtering and rectifying assembly.

[0011] Preferably, the triethyl phosphite filtering and rectifying assembly further comprises sealing rubber rings, a steam discharge pipeline, a fixing bracket, a condenser and a liquid discharge pipe, the sealing rubber rings are fixedly installed on one side of the connecting bracket, the steam discharge pipeline is fixedly installed on the top of the heating box, the fixing bracket is fixedly installed on the top of the heating box, the condenser is fixedly installed on the top of the fixing bracket, the liquid discharge pipe is fixedly installed on the output end of the condenser, and one end of the steam discharge pipeline is fixedly installed on the input end of the condenser.

[0012] Preferably, the filter element moving and disassembling assembly comprises control grooves, mounting plates, second lead screws and moving clamping blocks, the control grooves are arranged above the sliding frame and the sealing baffles, the mounting plates are fixedly installed on the inner four corners of the connecting bracket, the second lead screws are rotatably installed on the inner side of the mounting plates, and the moving clamping blocks are screw-mounted on the outer side of the second lead screws.

[0013] Preferably, the filter element moving and disassembling assembly further comprises a control shaft, bevel gears and a knob, the control shaft is rotatably installed on the inner side of the connecting bracket, the bevel gears are fixedly installed on the outer sides of the control shaft and the second lead screws respectively, adjacent bevel gears are engaged, and the knob is fixedly installed on the outer side of one end of the control shaft.

[0014] Preferably, two sliding grooves are formed in the left side of the stock solution filtering box, and a sealing gasket is arranged on one side of the sealing baffle.

[0015] Preferably, a clamping groove is formed in one side of the connecting block, and a moving clamping block is attached to the clamping groove; and a sealing groove is formed in the bottom of the filter screen plate, and a sealing rubber ring is attached to the sealing groove.

[0016] Preferably, a heating resistance wire is fixedly installed on the front side of the heating box, and an electromagnetic valve is arranged on the outer side of the water inlet pipeline.

[0017] Preferably, screw holes and limiting grooves are formed in one side of the sealing baffle and the sliding frame, the first lead screw is engaged with the screw holes, and the limiting rod is attached to the limiting groove.

[0018] Preferably, a plurality of guide grooves are formed in the top of the connecting frame, and the moving clamping block is slidingly installed in the inner side of the guide grooves.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] (1) The chemical rectifying device of the present application is provided with a triethyl phosphite filtering and rectifying assembly, a sealing rubber ring is arranged for sealing the filter screen plate, so that the liquid to be rectified can only pass through the filter screen plate to enter the inner side of the heating box for heating treatment, the filter screen plate can filter out sundries, the heating box can only heat the purified liquid, the steam generated after heating can enter the condenser through the steam discharge pipeline for cooling, the liquid after condensation can be discharged through the liquid discharge pipeline, and the device has good rectifying effect.

[0021] (2) The chemical rectifying device of the present application is provided with a filter moving and disassembling assembly, when it is necessary to disassemble, replace or clean the filter screen plate, the knob can be operated and controlled from the control groove, the knob can drive a plurality of bevel gears to rotate through the control shaft after rotation, the bevel gears can drive a plurality of second lead screws to rotate after rotation, the second lead screws can drive the moving clamping block to slide out from the inner side of the connecting block through thread cooperation, the filter screen plate can be taken off and cleaned from above the connecting frame, and the filter screen plate can be quickly installed through the positioning and cooperation of the sealing rubber ring and the sealing groove above the filter screen plate after cleaning.

[0022] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are described in detail below, and the accompanying drawings are referred to. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 Fig. 1 is a perspective view of a chemical rectifying device according to the present application;

[0024] Figure 2 A schematic view showing a three-dimensional view of a partial structure of a condenser and a liquid discharge pipe is shown according to an embodiment of the present application;

[0025] Figure 3 A schematic view showing a three-dimensional view of a partial structure of a chemical distillation device is shown according to an embodiment of the present application;

[0026] Figure 4 A schematic view showing a three-dimensional view of an exploded partial structure of a chemical distillation device is shown according to an embodiment of the present application;

[0027] Figure 5 A schematic view showing a three-dimensional view of a partial structure of a connecting frame and a moving clamping block is shown according to an embodiment of the present application.

[0028] Reference signs:

[0029] 1, triethyl phosphite filtering and distilling assembly; 2, filtering piece moving and disassembling assembly; 3, raw liquid filtering box; 4, water inlet pipeline; 5, heating box; 6, mounting frame; 7, motor; 8, first lead screw; 9, limiting rod; 10, transmission gear;

[0030] 11, sliding frame; 12, sealing baffle; 13, connecting frame; 14, filter screen plate; 15, connecting block; 16, sealing rubber ring; 17, steam discharge pipeline; 18, fixing frame; 19, condenser; 20, liquid discharge pipe;

[0031] 21, control groove; 22, mounting plate; 23, second lead screw; 24, moving clamping block; 25, control shaft; 26, bevel gear; 27, knob. DETAILED DESCRIPTION

[0032] In order to further understand the invention content, characteristics and effects of the present application, the following examples are given, and the detailed description is as follows in combination with the drawings.

[0033] The structure of the present application will be described in detail below in combination with the drawings.

[0034] Reference Figures 1-5 A chemical distillation device, comprising a raw liquid filtering box 3, a heating box 5 is fixedly installed on the top of the raw liquid filtering box 3, a mounting frame 6 is fixedly installed on the left side of the raw liquid filtering box 3, a motor 7 is fixedly installed on one side of the mounting frame 6, a first lead screw 8 is fixedly installed on the output end of the motor 7, a plurality of limiting rods 9 are fixedly installed on the inner side of the raw liquid filtering box 3 and the mounting frame 6, and a triethyl phosphite filtering and distilling assembly 1 is arranged above the raw liquid filtering box 3, the first lead screw 8 and the limiting rods 9.

[0035] The triethyl phosphite filtering and rectifying assembly 1 comprises a sliding frame 11, sealing baffles 12, a connecting frame 13, a filtering screen plate 14 and connecting blocks 15, the sliding frame 11 is threadedly installed on the outer side of the first lead screw 8, the sealing baffles 12 are fixedly installed on the left and right sides of the sliding frame 11, the connecting frame 13 is fixedly installed on one side of the sliding frame 11, the filtering screen plate 14 is arranged on one side of the connecting frame 13, and the connecting blocks 15 are fixedly installed on the four corners of one side of the filtering screen plate 14; when the filtering screen plate 14 needs to be disassembled, the motor 7 can drive the first lead screw 8 to rotate, the first lead screw 8 can drive the connecting frame 13 to slide out from the inner side of the raw liquid filtering box 3 through thread cooperation, and the connecting frame 13 and the filtering screen plate 14 on one side can slide into the inner side of the raw liquid filtering box 3 after sliding, so that the device has a shorter downtime and a longer replacement time, the sealing baffles 12 on the outer side of the connecting frame 13 can seal the sliding-out groove, and water flow can be prevented from leaking out during the filtering process.

[0036] In the embodiment, one side of the raw liquid filtering box 3 is fixedly installed with a water inlet pipeline 4, the outer sides of the two first lead screws 8 are fixedly installed with transmission gears 10, adjacent two transmission gears 10 are engaged, and the upper side of the triethyl phosphite filtering and rectifying assembly 1 is provided with a filtering element moving and disassembling assembly 2.

[0037] In the embodiment, the triethyl phosphite filtering and rectifying assembly 1 further comprises sealing rubber rings 16, a steam discharge pipeline 17, a fixed frame 18, a condenser 19 and a liquid discharge pipe 20, the sealing rubber rings 16 are fixedly installed on one side of the connecting frame 13, the steam discharge pipeline 17 is fixedly installed on the top of the heating box 5, the fixed frame 18 is fixedly installed on the top of the heating box 5, the condenser 19 is fixedly installed on the top of the fixed frame 18, the liquid discharge pipe 20 is fixedly installed on the output end of the condenser 19, and one end of the steam discharge pipeline 17 is fixedly installed on the input end of the condenser 19; the filtering screen plate 14 can filter sundries, so that the heating box 5 can heat only the refined liquid, the steam generated after heating can enter the condenser 19 for cooling through the steam discharge pipeline 17, the liquid condensed after cooling can be discharged through the liquid discharge pipe 20, and the device has a better rectification effect.

[0038] In the embodiment, the filtering element moving and disassembling assembly 2 comprises control grooves 21, mounting plates 22, second lead screws 23 and moving clamping blocks 24, the control grooves 21 are arranged above the sliding frame 11 and the sealing baffles 12, the mounting plates 22 are fixedly installed on the inner four corners of the connecting frame 13, the second lead screws 23 are rotatably installed on the inner side of the mounting plates 22, and the moving clamping blocks 24 are threadedly installed on the outer side of the second lead screws 23.

[0039] In the embodiment, the filter moving dismounting assembly 2 further comprises a control shaft 25, bevel gears 26 and a knob 27, the control shaft 25 is rotatably installed on the inner side of the connecting frame 13, the bevel gears 26 are fixedly installed on the outer side of the control shaft 25 and the second lead screws 23 respectively, the adjacent bevel gears 26 are engaged, and the knob 27 is fixedly installed on one end of the outer side of the control shaft 25; when it is necessary to dismount, replace or clean the filter screen plate 14, the knob 27 can be operated and controlled from the control groove 21, the knob 27 can drive the plurality of bevel gears 26 to rotate after rotating through the control shaft 25, the plurality of second lead screws 23 can be driven to rotate after rotating through the bevel gears 26, and the moving clamping block 24 can slide out from the inner side of the connecting block 15 through the threaded cooperation of the second lead screws 23, so that the filter screen plate 14 can be conveniently taken off and cleaned from the upper side of the connecting frame 13, and the filter screen plate 14 can be quickly installed through the positioning and cooperation of the sealing rubber ring 16 and the sealing groove on the upper side of the filter screen plate 14 after cleaning, and the sealing rubber ring 16 can be used for sealing the filter screen plate 14.

[0040] In the embodiment, the left side of the raw solution filter box 3 is provided with two sliding-out grooves, and one side of the sealing baffle 12 is provided with a sealing gasket; the sealing gasket can seal the sliding-out grooves through the sealing baffle 12, so that the liquid is not prone to water leakage during filtration.

[0041] In the embodiment, one side of the connecting block 15 is provided with a clamping groove, the moving clamping block 24 is fitted with the clamping groove, the bottom of the filter screen plate 14 is provided with a sealing groove, and the sealing rubber ring 16 is fitted with the sealing groove.

[0042] In the embodiment, the front side of the heating box 5 is fixedly installed with a heating resistance wire, and the outer side of the water inlet pipeline 4 is provided with a solenoid valve; the heating resistance wire can be used for heating and distilling the filtered liquid, the solenoid valve can be controlled to be opened when the liquid level height on the inner side of the heating box 5 is reduced, so that the liquid can be replenished, and the device can discharge water flow through the water inlet pipeline 4 after processing.

[0043] In the embodiment, one side of the sealing baffle 12 and the sliding frame 11 is provided with a threaded hole and a limiting groove, the first lead screw 8 is engaged with the threaded hole, and the limiting rod 9 is fitted with the limiting groove; the threaded hole is convenient for driving the sliding frame 11 and the sealing baffle 12 to slide after the first lead screw 8 rotates, the transmission gear 10 can make the rotating directions of the first lead screws 8 on both sides opposite, so that when one side of the sliding frame 11 and the sealing baffle 12 slide out, the other side of the sliding frame 11 and the sealing baffle 12 can slide into the inner side of the raw solution filter box 3.

[0044] The top of the connecting frame 13 is provided with a plurality of guide grooves, and the movable clamping block 24 is slidably installed in the inner side of the guide groove; the guide groove can guide and limit the movable clamping block 24, and the movable clamping block 24 can only slide after being stressed, so that the movable clamping block 24 can slide into the inner side of the connecting block 15, thereby making it convenient and fast to install and fix the filter screen plate 14.

[0045] Specific operation is that when it is necessary to disassemble, replace or clean the filter screen plate 14, the knob 27 can be operated and controlled from the control groove 21, the knob 27 can drive a plurality of bevel gears 26 to rotate through the control shaft 25 after rotating, the bevel gears 26 can drive a plurality of second lead screws 23 to rotate after rotating, and the second lead screws 23 can drive the movable clamping block 24 to slide out of the inner side of the connecting block 15 through thread cooperation, so as to facilitate the filter screen plate 14 to be taken off and cleaned from above the connecting frame 13, and after cleaning, the filter screen plate 14 can be quickly installed through the positioning and cooperation of the sealing rubber ring 16 and the sealing groove above the filter screen plate 14, and the sealing rubber ring 16 can be sealed and arranged on the filter screen plate 14, so that the liquid to be rectified can only pass through the filter screen plate 14 and enter the inner side of the heating box 5 for heating treatment, the filter screen plate 14 can filter sundries, so that the heating box 5 can only heat the pure liquid, and the steam generated after heating can enter the condenser 19 through the steam discharge pipeline 17 for cooling, and the condensed liquid can be discharged through the liquid discharge pipeline 20, so that the rectification effect of the device is better, and when it is necessary to disassemble and assemble the filter screen plate 14, the motor 7 can be controlled to drive the first lead screw 8 to rotate, the first lead screw 8 can drive the connecting frame 13 and the filter screen plate 14 to slide out of the inner side of the raw liquid filtering box 3 through thread cooperation, and after the connecting frame 13 and the filter screen plate 14 on one side slide, the connecting frame 13 and the filter screen plate 14 on the other side can slide into the inner side of the raw liquid filtering box 3, so that the device has a shorter downtime and a longer replacement time, and the sealing baffle 12 outside the connecting frame 13 can seal the sliding-out groove, so as to prevent water from leaking out during the filtering process.

[0046] It should be noted that although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A chemical distillation apparatus, characterized by comprising: The utility model relates to a triethyl phosphite filter distillation assembly, including: The original liquid filter box (3) is fixedly installed with the heating box (5) on the top, is fixedly installed with the mounting bracket (6) on the left side, the output end of motor (7) is fixedly installed with first screw rod (8), the inside of original liquid filter box (3) and mounting bracket (6) is fixedly installed with a plurality of limit rod (9), the top of original liquid filter box (3), first screw rod (8) and limit rod (9) is provided with triethyl phosphite filter distillation assembly (1); The triethyl phosphite filter distillation assembly (1) includes sliding frame (11), sealing baffle (12), connecting frame (13), filter screen plate (14) and connecting block (15), the sliding frame (11) is screwed on the outside of first screw rod (8), the sealing baffle (12) is fixedly installed on the left and right sides of sliding frame (11), the connecting frame (13) is fixedly installed on one side of sliding frame (11), the filter screen plate (14) is arranged on one side of connecting frame (13), and the connecting block (15) is fixedly installed on the four corners of one side of filter screen plate (14).

2. The chemical distillation apparatus according to claim 1, wherein The side of original liquid filter box (3) is fixedly installed with water inlet pipeline (4), the outside of two first screw rods (8) is fixedly installed with transmission gear (10), adjacent two transmission gears (10) are engaged, and the top of triethyl phosphite filter distillation assembly (1) is provided with filter piece movement dismounting assembly (2).

3. The chemical distillation apparatus according to claim 1, wherein The triethyl phosphite filter distillation assembly (1) further includes sealing rubber ring (16), steam exhaust pipeline (17), fixed frame (18), condenser (19) and liquid discharge pipe (20), the sealing rubber ring (16) is fixedly installed on one side of connecting frame (13), the steam exhaust pipeline (17) is fixedly installed on the top of heating box (5), the fixed frame (18) is fixedly installed on the top of heating box (5), the condenser (19) is fixedly installed on the top of fixed frame (18), the liquid discharge pipe (20) is fixedly installed on the output end of condenser (19), and one end of steam exhaust pipeline (17) is fixedly installed on the input end of condenser (19).

4. The chemical distillation apparatus according to claim 2, wherein The filter piece movement dismounting assembly (2) includes control groove (21), mounting plate (22), second screw rod (23) and movable clamping block (24), the control groove (21) is opened in the top of sliding frame (11) and sealing baffle (12), the mounting plate (22) is fixedly installed on the inside four corners of connecting frame (13), the second screw rod (23) is rotatably installed on the inside of mounting plate (22), and the movable clamping block (24) is screwed on the outside of second screw rod (23).

5. The chemical distillation apparatus according to claim 2, wherein The filter moving dismounting assembly (2) further comprises a control shaft (25), bevel gears (26) and a knob (27), the control shaft (25) is rotatably installed on the inner side of the connecting frame (13), the bevel gears (26) are fixedly installed on the outer side of the control shaft (25) and the second lead screw (23) respectively, the adjacent bevel gears (26) are engaged, and the knob (27) is fixedly installed on one end of the outer side of the control shaft (25).

6. The chemical distillation apparatus according to claim 1, wherein Two sliding grooves are formed on the left side of the stock solution filter box (3), and a sealing gasket is arranged on one side of the sealing baffle (12).

7. The chemical distillation apparatus according to claim 3, wherein A clamping groove is formed on one side of the connecting block (15), and a moving clamping block (24) is attached to the clamping groove, a sealing groove is formed on the bottom of the filter screen plate (14), and a sealing rubber ring (16) is attached to the sealing groove.

8. The chemical distillation apparatus according to claim 2, wherein A heating resistance wire is fixedly installed on the front side of the heating box (5), and an electromagnetic valve is arranged on the outer side of the water inlet pipeline (4).

9. The chemical distillation apparatus according to claim 1, wherein Threaded holes and limiting grooves are formed on one side of the sealing baffle (12) and the sliding frame (11), the first lead screw (8) is engaged with the threaded holes, and the limiting rod (9) is attached to the limiting grooves.

10. The chemical distillation apparatus according to claim 4, wherein A plurality of guide grooves are formed on the top of the connecting frame (13), and the moving clamping block (24) is slidably installed on the inner side of the guide grooves.

Images