Filtering device for synthesis of pesticide intermediate

Abstract

The utility model discloses a filter device for pesticide intermediate synthesis, including filter drum, be provided with the top cover on the filter drum, be provided with the baffle and interval board in the filter drum, two will the inside of the cylinder divide into feed cavity and filter chamber, be provided with the filter on the baffle, be provided with the cover plate on the top cover, be provided with the feed pipe on the cover plate, the bottom of filter drum is provided with the discharge pipe, be provided with flow sensor on the discharge pipe. The utility model discloses through the baffle and interval board cooperation divide into several independent chambers with filter drum, all be provided with the filter in each chamber, when the filter work proceeds, intermediate respectively enter the inside of each chamber and carry out filter operation, when the filter in a chamber appears the block, its flow will be small, when this, flow sensor will send a signal and remind the staff to carry out cleaning operation to this filter, when the cleaning work proceeds, need not stop the whole filter drum, thereby realized the filter drum cleaning operation without stopping, bring great convenience to production.

Description

Technical Field

[0001] This utility model relates to the technical field of drug filtration equipment, specifically to a filtration device for synthesizing pesticide intermediates. Background Technology

[0002] Pharmaceutical intermediates are chemical raw materials or products used in drug synthesis processes. These chemical products do not require a drug production license and can be produced in ordinary chemical plants. As long as they meet certain standards, they can be used in drug synthesis. After pharmaceutical intermediates are prepared, they contain impurities, so they need to be filtered. Existing intermediate filtration equipment is mostly a tank structure with an inlet and an outlet. Inside the tank is a filter. When the intermediates enter the filter, the impurities inside are filtered out. The accumulation of impurities on the filter can easily cause blockage of the entire filtration equipment. At this time, the machine needs to be stopped to clean the accumulated impurities inside the filter. During cleaning, filtration cannot be performed, which affects the efficiency of intermediate filtration. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a filtration device for the synthesis of pesticide intermediates, thereby solving the aforementioned technical problems.

[0004] The present invention adopts the following technical solution: a filter device for synthesizing pesticide intermediates, comprising a filter cylinder with a top opening, a top cover provided at the top opening of the filter cylinder, a partition horizontally placed at the upper part of the filter cylinder, the partition dividing the filter cylinder into an upper chamber and a lower chamber, a plurality of vertically arranged partitions evenly distributed in the upper chamber and the lower chamber, the upper partition dividing the upper chamber into a plurality of feeding chambers, the lower partition dividing the lower chamber into a plurality of filtering chambers, the positions of the feeding chambers and the filtering chambers corresponding one-to-one, a plurality of installation ports provided on the partitions connecting the feeding chambers and the filtering chambers, a filter provided at the installation port, the filter extending into the filtering chamber, an openable cover plate provided on the top cover at the position corresponding to each of the feeding chambers, a feeding pipe provided on the cover plate, a discharge pipe provided at the bottom of the filter cylinder at the position corresponding to each of the filtering chambers, a flow sensor provided on the discharge pipe, and an overflow pipe provided on the upper side wall of the filter cylinder, the overflow pipe communicating with the feeding chamber.

[0005] Furthermore, the filter includes a long cylindrical base with an opening at the top, a plurality of filter holes evenly distributed on the outer wall of the base, a filter bag inside the base, and the open end of the base is mounted on the partition plate.

[0006] Furthermore, the partition plate is provided with an installation groove at the position corresponding to the outer edge of the installation port, the cylinder seat is provided with an installation edge at the outer edge of its top opening, the installation edge rests in the installation groove, the opening edge of the filter bag rests on the installation edge, and a retaining pressure ring is provided above the opening edge of the filter bag, the retaining pressure ring cooperates with the installation edge to clamp the opening edge of the filter bag.

[0007] Furthermore, a connecting bolt is provided at the retaining ring, the connecting bolt passing through both the retaining ring and the mounting edge and being threadedly connected to the bottom of the mounting groove.

[0008] Furthermore, the upper end face of the retaining ring is flush with the upper end face of the partition.

[0009] Furthermore, the overflow pipe is located at the upper part of the feed chamber.

[0010] Furthermore, the lower end of the filter cartridge is provided with a support leg.

[0011] The above-mentioned technical solution of this utility model has the following beneficial effects: This utility model divides the filter cartridge into several independent chambers by the cooperation of partitions and spacers. Each chamber is equipped with a filter. When the filtration is in progress, the intermediate body enters the interior of each chamber to perform the filtration operation. When the filter in a chamber becomes clogged, its flow rate will decrease. At this time, the flow sensor will send a signal and remind the staff to clean the filter. When the cleaning is in progress, there is no need to stop the entire filter cartridge, thus realizing the non-stop cleaning operation of the filter cartridge, which brings great convenience to production. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0013] Figure 1 This is a schematic diagram of the main cross-sectional structure of an embodiment of the present utility model;

[0014] Figure 2 for Figure 1 Enlarged view of point A in the middle

[0015] Figure 3 This is a top view of the filter cartridge according to an embodiment of the present invention. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0018] like Figure 1-3 As shown, this embodiment of the present invention provides a filtration device for the synthesis of pesticide intermediates, including a filter cylinder 1 with an open top. A top cover 2 is provided at the opening of the filter cylinder 1. A partition 3 is horizontally placed at the upper part of the filter cylinder 1, dividing the filter cylinder 1 into an upper chamber and a lower chamber. Several vertically arranged partitions 4 are evenly distributed within the upper and lower chambers. The upper partition 4 divides the upper chamber into several feed chambers 5, and the lower partition 4 divides the lower chamber into several filter chambers 6. The positions of the feed chambers 5 and the filter chambers 6 are... Correspondingly, the partition 3 is provided with several installation ports that connect the feed chamber 5 and the filter chamber 6. A filter is provided at the installation port and extends into the filter chamber 6. The top cover 2 is provided with an openable cover plate 7 at the position corresponding to each feed chamber 5. A feed pipe 8 is provided on the cover plate 7. The bottom of the filter cylinder 1 is provided with a discharge pipe 9 at the position corresponding to each filter chamber 6. A flow sensor 10 is provided on the discharge pipe 9. An overflow pipe 11 is also provided on the upper side wall of the filter cylinder 1, and the overflow pipe 11 is connected to the feed chamber 5.

[0019] Both the feed pipe 8 and the discharge pipe 9 are equipped with control valves, and the overflow pipe is connected to a discharge pipe, which discharges the overflowing intermediate into the recovery tank.

[0020] The flow sensor 10 and the control valve in this invention are both controlled by a PLC control system. The flow sensor 10 transmits the feedback signal to the computer terminal or alarm, thereby reminding the staff to carry out cleaning operations.

[0021] The filter includes a long cylindrical base 12 with an opening at the top. Several filter holes 12a are evenly distributed on the outer wall of the base 12. A filter bag 13 is disposed inside the base 12. The end of the base 12 with the opening is mounted on a partition plate 3.

[0022] The partition plate 3 has an installation groove at the outer edge of the corresponding installation port. The cylinder base 12 has an installation edge 12b at the outer edge of its top opening. The installation edge 12b rests in the installation groove. The opening edge of the filter bag 13 rests on the installation edge 12b. The filter bag 13 has a retaining pressure ring 14 above its opening edge. The retaining pressure ring 14 cooperates with the installation edge 12b to clamp the opening edge of the filter bag 13.

[0023] A connecting bolt 15 is provided at the retaining ring 14. The connecting bolt 15 passes through the retaining ring 14 and the mounting edge 12b and is fixedly connected to the bottom of the mounting groove by threads.

[0024] The upper end face of the retaining ring 14 is flush with the upper end face of the partition 3.

[0025] The overflow pipe 11 is located at the top of the feed chamber 5.

[0026] The lower end of the filter cartridge 1 is provided with a support leg 16.

[0027] The working principle of this utility model embodiment is as follows: The intermediate raw material is transported to the interior of the filter cylinder 1 through pipelines along each feed pipe 8. The intermediate first flows into each feed chamber 5, and then enters the filter. Impurities in the intermediate are filtered through the filter bag 13 and the cylinder seat 12. The impurities are blocked in the filter bag 13 and the cylinder seat 12. The filtered intermediate is discharged into the filter chamber 6 through the filter holes 12a on the cylinder seat 12. Subsequently, the filtered intermediate is discharged through the discharge pipe 9 at the bottom. As the working time increases, impurities accumulate in the filter, which can cause blockage. At this time, the flow rate of the discharge pipe 9 will slow down. The flow sensor 10 monitors the flow rate at each discharge pipe 9. Once the flow rate decreases, the flow sensor 10 will send a signal and control the alarm device to start, thereby reminding the staff. The corresponding filter needs to be cleaned. During cleaning, close the control valves on the feed pipe 8 and discharge pipe 9 of the part to be cleaned, then open the cover plate 7, and then remove the connecting bolts 15 to remove the entire filter. Then replace the filter bag 13 and clean the cylinder seat 12. After the cleaning is completed, replace the new filter bag 13 and put the entire filter back into the filter cylinder 1. After the replacement is completed, open the corresponding control valve to continue the filtration operation. The entire cleaning operation can be completed without stopping the machine. If the filter is severely clogged, the intermediate will accumulate in the corresponding feed chamber 5. As the liquid level rises, the accumulated intermediate can be discharged through the overflow pipe 11, thereby preventing the intermediate material in the filter cylinder 1 from overflowing out along the gaps in the top cover and polluting the workshop environment.

[0028] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A filtration device for synthesizing pesticide intermediates, characterized in that: The filter includes a top-opening filter cartridge with a top cover. A horizontal partition is placed inside the filter cartridge, dividing it into an upper and lower chamber. Several vertically arranged partitions are evenly distributed within the upper and lower chambers. The upper partition divides the upper chamber into several feed chambers, and the lower partition divides the lower chamber into several filter chambers. The feed chambers and filter chambers are positioned one-to-one. Several mounting ports connecting the feed chambers and filter chambers are provided on the partitions, and filters are installed at these ports, extending into the filter chambers. An openable cover plate is provided on the top cover at each feed chamber position, and a feed pipe is installed on the cover plate. A discharge pipe is provided at the bottom of the filter cartridge at each filter chamber position, and a flow sensor is installed on the discharge pipe. An overflow pipe is also provided on the upper side wall of the filter cartridge, communicating with the feed chambers.

2. The filtration device for synthesizing pesticide intermediates according to claim 1, characterized in that: The filter includes a long cylindrical base with an opening at the top. Several filter holes are evenly distributed on the outer wall of the base. A filter bag is placed inside the base, and the open end of the base is mounted on the partition plate.

3. The filtration device for synthesizing pesticide intermediates according to claim 2, characterized in that: The partition plate has an installation groove at the position corresponding to the outer edge of the installation port. The cylinder seat has an installation edge at the outer edge of its top opening. The installation edge rests in the installation groove. The opening edge of the filter bag rests on the installation edge. The filter bag has a retaining pressure ring above its opening edge. The retaining pressure ring cooperates with the installation edge to clamp the opening edge of the filter bag.

4. The filtration device for synthesizing pesticide intermediates according to claim 3, characterized in that: A connecting bolt is provided at the retaining pressure ring. The connecting bolt passes through both the retaining pressure ring and the mounting edge and is threadedly fixed to the bottom of the mounting groove.

5. A filtration device for synthesizing pesticide intermediates according to claim 4, characterized in that: The upper end face of the retaining ring is flush with the upper end face of the partition.

6. A filtration device for synthesizing pesticide intermediates according to claim 1, characterized in that: The overflow pipe is located at the top of the feed chamber.

7. A filtration device for synthesizing pesticide intermediates according to claim 1, characterized in that: The lower end of the filter cartridge is provided with a support leg.

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