Filtering mechanism for producing dimethyl carbonate

Abstract

The utility model relates to the technical field of dimethyl carbonate production, in particular to a filtering mechanism for dimethyl carbonate production, which comprises a first vertical pipe and a second vertical pipe, the first vertical pipe is vertically connected and communicated with a conveying pipe, the second vertical pipe is vertically connected and communicated with a discharging pipe, two ends of the first vertical pipe are vertically connected and communicated with a front transverse pipe, and two ends of the second vertical pipe are vertically connected and communicated with a rear transverse pipe. The front transverse pipe is detachably communicated with one end of a round pipe, the other end of the round pipe blocked by a filter screen in the round pipe is detachably communicated with a rear transverse pipe, the rear transverse pipe is perpendicularly connected and communicated with the corresponding end of the second vertical pipe, a first valve is arranged on the front transverse pipe, and a one-way valve penetrating backwards is arranged on the rear transverse pipe. By using the finished product tank, sediments in the finished product tank can be blocked through the filter screen, the sediments are prevented from entering the conveying tank, and the quality of products in the conveying tank is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of dimethyl carbonate production, in particular to a filtering mechanism used for dimethyl carbonate production. Background Art

[0002] Dimethyl carbonate is an organic substance and a chemical raw material with low toxicity, excellent environmental performance, and a wide range of uses. It is an important organic synthesis intermediate. Its molecular structure contains functional groups such as carbonyl, methyl, and methoxy groups, and it has multiple reactivity. It is safe, convenient, low-pollution, and easy to transport in production. Due to its low toxicity, dimethyl carbonate is a "green" chemical product with development prospects. After production, dimethyl carbonate needs to be filled from the finished product tank into a transfer tank and then transported out through the transfer tank. In the existing technology, there is no filtering mechanism on the pipeline between the finished product tank and the transfer tank, and the dimethyl carbonate finished product tank contains a lot of sediment. Therefore, it will affect the product quality in the transfer tank to a certain extent. Utility Model Content

[0003] The utility model provides a filtering mechanism for dimethyl carbonate production, which is used to solve the defects in the prior art.

[0004] The utility model is achieved through the following technical solutions:

[0005] A filtering mechanism for the production of dimethyl carbonate comprises a first vertical pipe and a second vertical pipe in parallel, wherein the first vertical pipe is vertically connected and communicated with a feed pipe, the second vertical pipe is vertically connected and communicated with a discharge pipe, both ends of the first vertical pipe are vertically connected and communicated with a front transverse pipe, the front transverse pipe is detachably connected to one end of a circular pipe, the other end of the circular pipe is detachably connected to a rear transverse pipe through a filter screen blocking the circular pipe, the rear transverse pipe is vertically connected and communicated with the corresponding end of the second vertical pipe, the front transverse pipe is provided with a first valve, and the rear transverse pipe is provided with a backward-penetrating one-way valve.

[0006] When the present application is in use, one of the first valves is opened and the other is closed, and dimethyl carbonate is put into the feed pipe through the finished product tank, then enters the first vertical pipe through the feed pipe and enters the front horizontal pipe, the circular pipe, the rear horizontal pipe, the second vertical pipe in sequence through the first vertical bone and flows into the delivery tank, wherein the precipitate contained in the dimethyl carbonate flowing into the circular pipe is blocked in the circular pipe by the filter, thereby preventing the precipitate from flowing into the delivery tank, and then when the filter blocks too much precipitate, the first valve is closed and the other first valve is opened, so that dimethyl carbonate flows from the other side of the circular pipe, and then the circular pipe on the side where dimethyl carbonate is not flowing is removed and cleaned, thereby ensuring the long-term use of the filter and the smooth flow of dimethyl carbonate, and the one-way valve prevents backflow.

[0007] Preferably, the front transverse tube and the circular tube, and the rear transverse tube and the circular tube are connected via flanges.

[0008] Preferably, the circular tube is provided with multiple filter screens from front to back, with the mesh size of the filter screens gradually decreasing from front to back. A drain pipe is provided between adjacent filter screens, the lower end of which extends through the circular tube and is provided with a second valve, and the exit of the drain pipe is sealed. The multiple filter screens provided within the circular tube with different mesh size can block precipitates of different sizes in batches, thereby ensuring smooth flow of dimethyl carbonate within the circular tube. The drain pipe ensures that when the circular tube is cleaned, residue between the two filter screens is discharged through the drain pipe, which is controlled by the second valve.

[0009] Preferably, a water inlet pipe is provided between two adjacent filter screens, the outer end of the water inlet pipe extending through the circular tube and sealed at the exit, the inner end of the water inlet pipe being connected to a nozzle, a third valve being provided on the water inlet pipe, and the outer end of the water inlet pipe being detachably fixedly connected to an external water pipe. The water inlet pipe is connected to the water pipe, allowing external water to be introduced into the circular tube and sprayed out through the nozzle, thereby facilitating cleaning of the gap between the two filter screens.

[0010] Preferably, the filter includes an annular frame and a mesh body fixedly disposed within the annular frame. The annular frame is in contact with the inner wall of the circular tube and has a blind hole formed therein. The circular tube has a screw hole formed therein. The screw hole has a threaded inner surface adapted to receive a bolt that can be inserted into the blind hole. The bolt engages with the threaded blind hole. The screw hole enables a detachable fixed connection between the filter and the circular tube, thereby facilitating removal of the filter and further facilitating cleaning.

[0011] The beneficial effects of the present invention are as follows: the use of the present invention can not only block the sediment in the finished product tank through the filter screen to prevent it from entering the conveying tank, thereby ensuring the quality of the product in the conveying tank, but also when the filter screen is blocked, another filter screen can be used to ensure that the finished product tank can continuously convey dimethyl carbonate into the conveying tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 yes Figure 1 I local enlarged view;

[0015] Figure 3 It is a schematic diagram of the filter structure.

[0016] As shown in the figure:

[0017] 1. Feed pipe, 2. First vertical pipe, 3. Second vertical pipe, 4. Front horizontal pipe, 5. Round pipe, 6. Rear horizontal pipe, 7. First valve, 8. One-way valve, 9. Flange, 10. Filter, 11. Drain pipe, 12. Second valve, 13. Water inlet pipe, 14. Third valve, 101. Ring frame, 102. Mesh body. DETAILED DESCRIPTION

[0018] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings 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 shall fall within the scope of protection of the present invention.

[0019] A filtering mechanism for dimethyl carbonate production, such as Figure 1-Figure 3 As shown, it includes a parallel first vertical pipe 2 and a second vertical pipe 3. The first vertical pipe 2 is vertically connected and communicated with a feed pipe 1. The second vertical pipe 3 is vertically connected and communicated with a discharge pipe. Both ends of the first vertical pipe 2 are vertically connected and communicated with a front transverse pipe 4. The front transverse pipe 4 is communicated with one end of a circular pipe 5. The circular pipe 5 is blocked by a filter screen 10. The other end of the circular pipe 5 is detachably connected to a rear transverse pipe 6. The rear transverse pipe 6 is vertically connected and communicated with the corresponding end of the second vertical pipe 3. A first valve 7 is provided on the front transverse pipe 4. A rearward-connected one-way valve 8 is provided on the rear transverse pipe 6. The front transverse pipe 4 and the circular pipe 5, as well as the rear transverse pipe 6 and the circular pipe 5, are connected by flanges 9.

[0020] When the present application is in use, one of the first valves 7 is opened and the other is closed, and dimethyl carbonate is put into the feed pipe 1 through the finished product tank, and then enters the first vertical pipe 2 through the feed pipe 1 and enters the front transverse pipe 4, the circular pipe 5, the rear transverse pipe 6, the second vertical pipe 3 through the first vertical bone in sequence and flows into the delivery tank, wherein the precipitate contained in the dimethyl carbonate flowing into the circular pipe 5 is blocked in the circular pipe 5 by the filter screen 10, thereby preventing the precipitate from flowing into the delivery tank, and then when the filter screen 10 blocks too much precipitate, the first valve 7 is closed and the other first valve 7 is opened, so that dimethyl carbonate flows from the other side of the circular pipe 5, and then the circular pipe 5 on the side where dimethyl carbonate is not flowing is disassembled and cleaned, thereby ensuring the long-term use of the filter screen 10 and the smooth flow of dimethyl carbonate, and the one-way valve 8 prevents backflow.

[0021] Multiple filters 10 are positioned within the circular tube 5 from front to back, with the mesh size of each filter 10 gradually decreasing from front to back. A drain pipe 11 is located between adjacent filters 10. The lower end of drain pipe 11 passes through the circular tube 5 and is fitted with a second valve 12. The exit of drain pipe 11 is sealed. The presence of multiple filters 10 with varying mesh sizes within the circular tube 5 allows for the separation of precipitates of varying sizes, ensuring smooth flow of dimethyl carbonate within the circular tube 5. The drain pipe 11 ensures that when the circular tube 5 is cleaned, any residue between the two filters 10 is discharged through the drain pipe 11, which is controlled by a second valve 12.

[0022] A water inlet pipe 13 is provided between two adjacent filter screens 10. The outer end of the water inlet pipe 13 passes through the circular tube 5 and is sealed at the exit. The inner end of the water inlet pipe 13 is connected to a nozzle. A third valve 14 is provided on the water inlet pipe 13. The outer end of the water inlet pipe 13 is detachably connected to an external water pipe. The water inlet pipe 13 is connected to the water pipe, allowing external water to be introduced into the circular tube 5 and sprayed out through the nozzle, thereby facilitating cleaning of the space between the two filter screens 10.

[0023] The filter 10 includes an annular frame 101 and a mesh body 102 fixedly disposed within the annular frame 101. The annular frame 101 is in contact with the inner wall of the circular tube 5 and has a blind hole formed therein. The circular tube 5 has a screw hole formed therein. The screw hole has a threaded inner portion adapted to receive a bolt that fits within the blind hole. The bolt then engages with the threaded blind hole. The screw hole allows the filter 10 to be removably fixedly connected to the circular tube 5, thereby facilitating removal of the filter 10 and further facilitating cleaning.

[0024] The use of the present application can not only block the sediment in the finished product tank through the filter 10, prevent it from entering the conveying tank, and ensure the quality of the product in the conveying tank, but also when the filter 10 is blocked, another filter 10 can be used to ensure that the finished product tank can continuously convey dimethyl carbonate into the conveying tank.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A filtering mechanism for dimethyl carbonate production, characterized in that: It includes a parallel first vertical pipe and a second vertical pipe, the first vertical pipe is vertically connected and connected to the feed pipe, the second vertical pipe is vertically connected and connected to the discharge pipe, the two ends of the first vertical pipe are vertically connected and connected to the front cross pipe, the front cross pipe is detachably connected to one end of a round pipe, the round pipe is blocked by a filter screen, and the other end of the round pipe is detachably connected to the rear cross pipe, the rear cross pipe is vertically connected and connected to the corresponding end of the second vertical pipe, a first valve is provided on the front cross pipe, and a backward-passing one-way valve is provided on the rear cross pipe.

2. The filtration mechanism for dimethyl carbonate production according to claim 1, characterized in that: The front transverse pipe and the round pipe, as well as the rear transverse pipe and the round pipe are connected by flanges.

3. The filtration mechanism for dimethyl carbonate production according to claim 2, characterized in that: A plurality of filter screens are arranged in the circular tube from front to back, and the diameter of the filter screen grid gradually decreases from front to back. A sewage pipe is arranged between two adjacent filter screens. The lower end of the sewage pipe passes through the circular tube and is provided with a second valve. The sewage pipe is sealed at the exit.

4. The filtration mechanism for dimethyl carbonate production according to claim 3, characterized in that: A water inlet pipe is provided between two adjacent filter screens. The outer end of the water inlet pipe passes through the circular pipe and is sealed. The inner end of the water inlet pipe is connected to a nozzle. A third valve is provided on the water inlet pipe. The outer end of the water inlet pipe is detachably fixedly connected to an external water pipe.

5. The filtering mechanism for dimethyl carbonate production according to claim 4, characterized in that: The filter screen includes an annular frame and a mesh body fixed in the annular frame. The annular frame fits the inner wall of the circular tube and is provided with a blind hole. The circular tube is provided with a screw hole. The inner thread of the screw hole is matched with a bolt that can penetrate into the blind hole. The bolt cooperates with the blind hole thread.

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