A dichloromethane purification system

Abstract

This utility model belongs to the field of purification technology, and particularly relates to a dichloromethane purification system, comprising: a purification tank body, the bottom surface of which has a drain port, a mounting frame movably fitted inside the drain port, and a filter screen fixedly installed inside the mounting frame; a drain pipe, which is fixedly installed on the bottom surface of the purification tank body and connected to the drain port; and a lifting frame, which is slidably installed inside the drain port, with its top surface in contact with the bottom surface of the mounting frame. When disassembling the filter screen, the pin is pulled outward, releasing the restriction on the rotating shaft. Rotating the handle drives the rotating shaft to rotate. When the shaft rotates, the lifting frame is pushed up through the cooperation of the mounting base, the first connecting rod, and the second connecting rod. When the lifting frame rises, it pushes the mounting frame up, pushing the mounting frame out of the drain port, thereby facilitating the removal of the filter screen from the drain port. This allows for convenient and quick removal of the filter screen from the drain port, enabling filter screen replacement.

Description

Technical Field

[0001] This utility model belongs to the field of purification technology, and in particular relates to a dichloromethane purification system. Background Technology

[0002] Dichloromethane (DCM), also known as dichloroalkanes or methyl chloroform, is a colorless organic compound with a pungent, ether-like odor. Its chemical formula is CH₂Cl₂. This compound is formed by replacing two hydrogen atoms in methane (CH₄) with chlorine atoms. It is slightly soluble in water, soluble in ethanol and diethyl ether. Under normal operating conditions, it is a non-flammable, low-boiling-point solvent. Its vapor only produces a weakly combustible mixture when it reaches a high concentration in hot air. It is often used to replace flammable petroleum ether and diethyl ether. Due to its good solubility, it is widely used in industrial fields, such as as an industrial solvent, intermediate, and coolant. It also has important applications in pharmaceutical preparation, laboratories, and the pharmaceutical industry.

[0003] In existing methods, dichloromethane is typically purified using a purification tank. After purification, the solution is filtered through a filter screen. However, although the existing purification equipment is equipped with a filter screen, it will eventually become damaged after long-term use. Since the filter screen is installed inside the purification equipment, it is difficult to quickly disassemble and replace, thus affecting the production efficiency of dichloromethane removal. In view of this, we propose a dichloromethane purification system. Utility Model Content

[0004] The purpose of this invention is to provide a dichloromethane purification system to solve the problems mentioned in the background art.

[0005] In view of this, the present invention provides a dichloromethane purification system, comprising: The purification tank body has a drain port on its bottom surface, and an installation frame is movably fitted inside the drain port. A filter screen is fixedly installed inside the installation frame. A drain pipe is fixedly installed on the bottom surface of the purification tank body and is connected to a drain port. A lifting frame is slidably installed inside the drain port, and the top surface of the lifting frame is in contact with the bottom surface of the mounting frame; The lifting assembly is located inside the purification tank and is used to move the lifting frame. When installing the filter screen, the mounting frame is fitted into the drain port. When the mounting frame is fitted into the drain port, the sealing strip on the surface of the mounting frame abuts against the inner wall of the drain port, thereby achieving a seal between the mounting frame and the drain port. This prevents the solution in the purification tank from flowing out through the gap between the mounting frame and the drain port, enhancing the sealing performance. When the mounting frame is installed inside the drain port, the sleeve on the mounting frame will fit into the groove on the lifting frame. At this time, the C-shaped slot will engage with the locking post, thereby limiting the mounting frame and preventing the filter screen from loosening during use, which would affect the solution filtration effect.

[0006] In the above technical solution, the lifting assembly further includes a rotating shaft, which is rotatably installed in the drain port and the purification tank body. One end of the rotating shaft is located outside the purification tank body. Two first connecting rods are fixedly installed on the outer side wall of the rotating shaft. Two mounting seats are fixedly installed on the bottom surface of the lifting frame. A second connecting rod is rotatably installed in each of the two mounting seats. One side of each of the two second connecting rods is rotatably connected to one side of each of the two first connecting rods. When the rotating shaft rotates, the lifting frame is pushed up by the cooperation of the mounting seats, the first connecting rods, and the second connecting rods. When the lifting frame rises, it pushes the mounting frame up, pushing the mounting frame out of the drain port, thereby facilitating the removal of the filter screen from the drain port. This allows for quick and easy removal of the filter screen from the drain port, enabling the replacement of the filter screen.

[0007] In the above technical solution, a handle is further fixedly installed at one end of the rotating shaft located outside the purification tank body, so that the rotating shaft can be easily driven to rotate by rotating the handle.

[0008] In the above technical solution, a side plate is fixedly installed on the outer side wall of the rotating shaft, a second insertion hole is opened on one side of the side plate, a first insertion hole is opened on the outer side wall of the purification tank body, and a pin is movably connected in the first insertion hole and the second insertion hole. When the pin is pulled out, the limitation on the rotating shaft is released.

[0009] In the above technical solution, a valve is further provided on the drain pipe. When the valve is opened, the solution in the purification tank body will be discharged to the outside.

[0010] In the above technical solution, the surface of the mounting frame is further provided with a sealing strip, which abuts against the inner wall of the drain port. When the filter screen is installed, the mounting frame is fitted into the drain port. When the mounting frame is fitted into the drain port, the sealing strip on the surface of the mounting frame abuts against the inner wall of the drain port, thereby achieving a seal between the mounting frame and the drain port and preventing the solution in the purification tank body from flowing out through the gap between the mounting frame and the drain port.

[0011] In the above technical solution, the top surface of the lifting frame has two slots, and each slot has a locking post fixedly installed in it. The bottom surface of the mounting frame has two blocks, and each block has a C-shaped slot on one side. The blocks are movably engaged with the slots, and the C-shaped slots are movably engaged with the locking posts.

[0012] The beneficial effects of this utility model are: 1. In this dichloromethane purification system, when disassembling the filter screen, the pin is pulled outward, which releases the limit on the rotating shaft. Turning the handle drives the rotating shaft to rotate. When the rotating shaft rotates, the lifting frame is pushed up through the cooperation of the mounting base, the first connecting rod, and the second connecting rod. When the lifting frame rises, it pushes the mounting frame up, pushing the mounting frame out of the drain port, thus facilitating the removal of the filter screen from the drain port. This allows for quick and easy removal of the filter screen from the drain port, enabling filter screen replacement.

[0013] 2. In this dichloromethane purification system, when installing the filter screen, the mounting frame is fitted into the drain port. When the mounting frame is fitted into the drain port, the sealing strip on the surface of the mounting frame abuts against the inner wall of the drain port, thereby achieving a seal between the mounting frame and the drain port. This prevents the solution in the purification tank from flowing out through the gap between the mounting frame and the drain port, enhancing the sealing performance. When the mounting frame is installed in the drain port, the sleeve on the mounting frame will fit into the groove on the lifting frame. At this time, the C-shaped slot will engage with the locking post, thus limiting the mounting frame and preventing the filter screen from loosening during use, which would affect the solution filtration effect. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic cross-sectional view of the purification tank body of this utility model; Figure 3 This is a schematic diagram of the lifting frame structure of this utility model; Figure 4 This is a partially enlarged structural schematic diagram of this utility model.

[0015] The markings in the diagram are as follows: 1. Purification tank body; 2. Drain port; 3. Drain pipe; 4. Mounting frame; 5. Filter screen; 6. Lifting frame; 7. Rotating shaft; 8. Mounting base; 9. First connecting rod; 10. Second connecting rod; 11. Sealing strip; 12. Sleeve block; 13. C-shaped groove; 14. Sleeve groove; 15. Locking post; 16. Side plate; 17. First insertion hole; 18. Second insertion hole; 19. Pin; 20. Handle; 21. Valve. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0017] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0018] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0019] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0020] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0021] Example 1: Please see Figures 1-4 As shown in the figure, this embodiment provides a dichloromethane purification system.

[0022] include: Purification tank body 1, the bottom surface of purification tank body 1 is provided with drain port 2, a mounting frame 4 is movably sleeved in the drain port 2, and a filter screen 5 is fixedly installed in the mounting frame 4; Drain pipe 3 is fixedly installed on the bottom surface of the purification tank body 1, and the drain pipe 3 is connected to the drain port 2. The lifting frame 6 is slidably installed inside the drain port 2, and the top surface of the lifting frame 6 is in contact with the bottom surface of the mounting frame 4. The lifting assembly is located inside the purification tank body 1 and is used to move the lifting frame 6. When installing the filter screen 5, the mounting frame 4 is fitted into the drain port 2. When the mounting frame 4 is fitted into the drain port 2, the sealing strip 11 on the surface of the mounting frame 4 will abut against the inner wall of the drain port 2, thereby achieving a seal between the mounting frame 4 and the drain port 2. This prevents the solution in the purification tank body 1 from flowing out through the gap between the mounting frame 4 and the drain port 2, thus enhancing the sealing performance. When the mounting frame 4 is installed in the drain port 2, the sleeve block 12 on the mounting frame 4 will fit into the sleeve groove 14 on the lifting frame 6. At this time, the C-shaped slot 13 will engage with the locking post 15, thereby limiting the mounting frame 4 and preventing the filter screen 5 from becoming loose during use, which would affect the solution filtration effect.

[0023] Example 2: This embodiment provides a dichloromethane purification system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0024] The lifting assembly includes a rotating shaft 7, which is rotatably installed inside the drain port 2 and the purification tank body 1. One end of the rotating shaft 7 is located outside the purification tank body 1. Two first connecting rods 9 are fixedly installed on the outer wall of the rotating shaft 7. Two mounting seats 8 are fixedly installed on the bottom surface of the lifting frame 6. A second connecting rod 10 is rotatably installed in each of the two mounting seats 8. One side of each of the two second connecting rods 10 is rotatably connected to one side of each of the two first connecting rods 9. When the rotating shaft 7 rotates, the lifting frame 6 will be pushed up by the cooperation of the mounting seats 8, the first connecting rods 9, and the second connecting rods 10. When the lifting frame 6 rises, it will push the mounting frame 4 up, pushing the mounting frame 4 out of the drain port 2, thereby facilitating the removal of the filter screen 5 from the drain port 2. This allows for quick and easy removal of the filter screen 5 from the drain port 2, enabling the replacement of the filter screen 5.

[0025] Example 3: This embodiment provides a dichloromethane purification system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0026] The rotating shaft 7 is fixedly mounted with a handle 20 at one end outside the purification tank body 1. By rotating the handle 20, the rotating shaft 7 can be easily driven to rotate.

[0027] Example 4: This embodiment provides a dichloromethane purification system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0028] Among them, a side plate 16 is fixedly installed on the outer side wall of the rotating shaft 7. A second insertion hole 18 is opened on one side of the side plate 16. A first insertion hole 17 is opened on the outer side wall of the purification tank body 1. A pin 19 is movably connected in the first insertion hole 17 and the second insertion hole 18. When the pin 19 is pulled out, the limitation on the rotating shaft 7 is released.

[0029] Example 5: This embodiment provides a dichloromethane purification system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0030] The drain pipe 3 is equipped with a valve 21. When the valve 21 is opened, the solution in the purification tank body 1 will be discharged to the outside.

[0031] Example 6: This embodiment provides a dichloromethane purification system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0032] The mounting frame 4 is provided with a sealing strip 11 on its surface. The sealing strip 11 abuts against the inner wall of the drain port 2. When the filter screen 5 is installed, the mounting frame 4 is fitted into the drain port 2. When the mounting frame 4 is fitted into the drain port 2, the sealing strip 11 on the surface of the mounting frame 4 will abut against the inner wall of the drain port 2, thereby achieving a seal between the mounting frame 4 and the drain port 2 and preventing the solution in the purification tank body 1 from flowing out through the gap between the mounting frame 4 and the drain port 2.

[0033] Example 7: This embodiment provides a dichloromethane purification system, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0034] The top surface of the lifting frame 6 has two slots 14, and each slot 14 has a fixed locking post 15. The bottom surface of the mounting frame 4 has two blocks 12, and each block 12 has a C-shaped locking groove 13 on one side. The two blocks 12 are movably connected to the two slots 14, and the two C-shaped locking grooves 13 are movably locked to the two locking posts 15.

[0035] In use: When disassembling the filter screen 5, pull out the pin 19. This releases the limit on the rotating shaft 7. Turn the handle 20 to drive the rotating shaft 7 to rotate. When the rotating shaft 7 rotates, the lifting frame 6 will be pushed up through the cooperation of the mounting base 8, the first connecting rod 9, and the second connecting rod 10. When the lifting frame 6 rises, it will push the mounting frame 4 up, pushing the mounting frame 4 out of the drain port 2. This makes it easy to remove the filter screen 5 from the drain port 2, making it convenient and quick to disassemble the filter screen 5 from the drain port 2 and replace the filter screen 5.

[0036] When installing the filter screen 5, the mounting frame 4 is fitted into the drain port 2. When the mounting frame 4 is fitted into the drain port 2, the sealing strip 11 on the surface of the mounting frame 4 will abut against the inner wall of the drain port 2, thereby achieving a seal between the mounting frame 4 and the drain port 2. This prevents the solution in the purification tank body 1 from flowing out through the gap between the mounting frame 4 and the drain port 2, thus enhancing the sealing performance. When the mounting frame 4 is installed in the drain port 2, the sleeve block 12 on the mounting frame 4 will fit into the sleeve groove 14 on the lifting frame 6. At this time, the C-shaped slot 13 will engage with the locking post 15, thereby forming a limit on the mounting frame 4 and preventing the filter screen 5 from becoming loose during use, which would affect the solution filtration effect.

[0037] The embodiments of this application have been described above with reference to the accompanying drawings. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

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