Topicamide synthesis mother liquor recovery system and method

Abstract

The invention relates to the technical field of tropicamide synthesis mother liquor recovery, and provides a tropicamide synthesis mother liquor recovery system and method.The system comprises a pH stirring and adjusting tank body, a filter box, a mounting frame, a filter bag, a fine filter screen, a first driving motor, an adapter plate, a sliding connection sleeve plate, a deslagging door and a top plate. The filter box body is arranged to be a rectangular box body, assembly of a rectangular mounting frame is facilitated, meanwhile, a first driving motor can conveniently adjust the mounting frame to rotate, and the mounting frame is arranged to be rotatable, so that when impurities attached to a filter bag need to be cleaned, the mounting frame is adjusted to rotate; the filter bag is arranged in the mounting frame, the filter surface of the filter bag is ejected out of the mounting frame through the top plate, flushing water flowing through the flowing channel can flush the surface of the filter bag, and the fine filter screen can be rotated to be inclined through the rotationally arranged adapter plate, so that the filter bag and the fine filter screen do not need to be disassembled; therefore, impurities attached to the filter bag and the fine filter screen can be cleaned, and the device is convenient to use.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of topropine synthesis mother liquor recovery, and particularly relates to a topropine synthesis mother liquor recovery system and method. BACKGROUND

[0002] Topropine is a commonly used mydriatic and cycloplegic agent, and a large amount of organic mother liquor containing unreacted raw materials, intermediates, by-products and target products is generated in the chemical synthesis process (usually involving amination, esterification, condensation and the like). The topropine mother liquor is usually complex in composition, and direct discharge will cause serious resource waste and environmental pollution.

[0003] In the conventional topropine synthesis mother liquor treatment, the collection, filtration, pH adjustment, rectification and crystallization processes are needed, among which the collection, filtration and pH adjustment processes of the topropine synthesis mother liquor are particularly important. The topropine synthesis mother liquor is collected and filtered to remove solid particulate matter, catalyst residues and the like mechanical impurities in the mother liquor, and the topropine synthesis mother liquor is adjusted in pH to make the components of the topropine synthesis mother liquor exist in the form of ions or molecules for the subsequent rectification by adding acid or alkali to adjust the pH value of the mother liquor. However, when the collected topropine synthesis mother liquor is filtered, since the mother liquor contains a large amount of viscous substances (such as tar-like substances), in order to prevent the impurities from directly adhering to and blocking the filter screen, a filter bag is usually arranged in front of the filter screen to filter the large-volume impurities in the mother liquor. The adhesion of the viscous substances will cause the filter screen and the filter bag to need to be frequently maintained and replaced. Since the filter bag and the filter screen are usually located deep in the filtering device, it is inconvenient to clean the impurities on the surface of the filter screen and the filter bag, and a lot of time is consumed when the filter bag and the filter screen are manually taken out for cleaning. Therefore, the present application proposes a topropine synthesis mother liquor recovery system and method to solve the above problems. SUMMARY

[0004] In view of this, the present application provides a topropine synthesis mother liquor recovery system and method to solve the technical problem that the adhesion of viscous substances will cause the filter screen and the filter bag to need to be frequently maintained and replaced when the collected topropine synthesis mother liquor is filtered, since the filter bag and the filter screen are usually located deep in the filtering device, it is inconvenient to clean the impurities on the surface of the filter screen and the filter bag, and a lot of time is consumed when the filter bag and the filter screen are manually taken out for cleaning.

[0005] The technical scheme of the present application is as follows: The present application provides a topropine synthesis mother liquor recovery system, comprising a pH stirring adjustment tank body, a filter box body, a mounting frame, a filter bag, a fine filter screen, a first driving motor, a transfer plate, a sliding sleeve plate, a residue discharge door and a top plate, wherein,

[0006] The filter box is a square box, the filter box is communicated with the pH stirring adjusting tank body through a first discharging pipe, and a flow channel for the flow of the tropicamide synthesis mother liquor is formed in the filter box;

[0007] The installation frame is rotatably arranged in the flow channel, and the filter bag is fixedly connected to the inner side of the installation frame, and the filter bag is used for filtering large-volume impurities in the mother liquor flowing through the flow channel;

[0008] The fine filter screen is arranged in the flow channel and located on one side of the filter bag in the flow direction of the mother liquor, and is used for filtering small-volume impurities in the mother liquor flowing through the flow channel;

[0009] The first driving motor is arranged on one side of the filter box and is used for driving the installation frame to rotate;

[0010] The filter box is provided with a residue discharging opening on one side, and the adapter plate is rotatably arranged in the inner side of the residue discharging opening and is sealingly attached to the hole wall of the residue discharging opening;

[0011] The sliding sleeve plate is slidingly sleeved on the outer side of the adapter plate and is fixedly connected with the fine filter screen;

[0012] The residue discharging door is slidingly arranged on one side of the filter box and is used for sliding to block the residue discharging opening;

[0013] The filter box is provided with a first assembly hole on one side, the top plate is slidingly arranged in the first assembly hole and is located opposite to the installation frame, the top plate is sealingly attached to the hole wall of the first assembly hole, when the top plate slides, one end of the top plate slides to the inner side of the filter box, and the other end of the top plate is located on the outer side of the filter box.

[0014] On the basis of the above technical scheme, preferably, the end plate and the sliding block are further included, wherein,

[0015] The end plate is arranged at one end of the fine filter screen away from the sliding sleeve plate, and the side wall of the end plate away from the fine filter screen is an arc-shaped wall;

[0016] The arc-shaped wall of the end plate is provided with an arc-shaped sliding groove, the sliding block is slidingly connected with the arc-shaped sliding groove and is slidingly connected with the inner wall of the filter box.

[0017] On the basis of the above technical scheme, preferably, the inner baffle and the sliding rod are further included, wherein,

[0018] The filter box has a sliding hole on one side wall corresponding to the slag discharge port. The sliding rod is slidably disposed inside the sliding hole, and the two ends of the sliding rod are fixedly connected to the slag discharge door and the inner baffle respectively. The inner baffle abuts against the sliding sleeve and is sealed and fitted to the inner wall of the filter box and the sliding sleeve.

[0019] Based on the above technical solutions, a preferred embodiment also includes a flow guide block, wherein...

[0020] A flow guide block is disposed on the top of the inner baffle and is sealed and fitted to the inner wall of the filter box. One side wall of the flow guide block is an inclined wall. The distance between the top of the flow guide block and the bottom wall of the inner baffle is H1. The height of the sliding hole is H2, where H1 > H2.

[0021] Based on the above technical solutions, preferably, it also includes a second drive motor and a toothed roller, wherein,

[0022] A second drive motor is mounted on the filter housing, and the toothed roller is fixedly connected to the output shaft of the second drive motor. A toothed groove is provided on the top plate, and the toothed roller meshes with the toothed groove.

[0023] Based on the above technical solutions, preferably, it also includes a drive roller and a drive belt, wherein...

[0024] A connecting groove is provided on one side wall of the inner cavity of the filter box, and a second assembly hole is provided on the outer side of the filter box that communicates with the connecting groove. The second assembly hole is an annular hole.

[0025] A drive roller is rotatably mounted on one side of the filter housing. A drive belt passes around the second mounting hole and is connected to the drive roller. The drive belt covers the connecting groove, and the slider passes through the connecting groove and is connected to the drive belt.

[0026] Based on the above technical solutions, a preferred embodiment further includes a mounting side plate and a third drive motor, wherein...

[0027] A mounting side plate is installed on one side of the filter housing corresponding to the drive roller, and the third drive motor is installed on the mounting side plate, with the output shaft of the third drive motor being connected to the drive roller in a transmission manner.

[0028] Based on the above technical solutions, the preferred embodiment also includes a latch and a locking block, wherein,

[0029] A latch is provided on the slag discharge door, and at least two locking blocks are provided on the side wall of the filter box corresponding to the slag discharge door. Multiple locking blocks are distributed in the height direction, and the latch is selectively connected to multiple locking blocks.

[0030] Based on the above technical solutions, the preferred embodiment further includes an upper filter box, a lower filter box, a filter screen, an outer sealing sleeve, and an anti-backflow baffle, wherein...

[0031] The outlet of the pH stirring and adjusting tank body is connected to a second discharge pipe. The upper filter box is detachably connected to the second discharge pipe, and the upper filter box is provided with a water inlet that is connected to the second discharge pipe.

[0032] The lower filter box abuts against the upper filter box and communicates with the upper filter box. The bottom of the lower filter box is provided with a water outlet, which is connected to the second discharge pipe.

[0033] A filter screen is disposed inside the lower filter box and covers the water outlet to filter impurities flowing through the water outlet;

[0034] An outer sealing sleeve is slidably fitted on the outside of the second discharge pipe and is used to slide to cover the contact point between the upper filter box and the lower filter box;

[0035] The backflow prevention baffle is a frustoconical baffle located on the top wall of the inner cavity of the upper filter box, and the water inlet is located inside the backflow prevention baffle.

[0036] This invention also proposes a method for recovering tropicamide synthesis mother liquor, which is accomplished through the aforementioned tropicamide synthesis mother liquor recovery system, and includes the following steps:

[0037] S1. The tropicamide synthesis mother liquor is supplied to the filter box. At this time, the tropicamide synthesis mother liquor is supplied to the pH stirring and adjusting tank body through the filter bag and the fine filter screen from the first discharge pipe. The filter bag filters out the large volume impurities in the tropicamide synthesis mother liquor, and the fine filter screen filters out the small volume impurities in the tropicamide synthesis mother liquor.

[0038] S2. When it is necessary to clean the impurities attached to the filter bag and fine filter screen, the first drive motor is used to control the installation frame to rotate 90 degrees and control the top plate to slide into the filter box until the top plate abuts the filter bag and presses the filter bag to the other side of the installation frame.

[0039] S3. Adjust the end of the fine filter screen away from the sliding sleeve to move upward;

[0040] S4. Supply cleaning water into the filter box. The cleaning water first washes the impurities attached to the surface of the filter bag in the direction of flow, and then washes the impurities attached to the surface of the fine filter screen. The washing water flows through the fine filter screen to the first discharge pipe. The impurities accumulate at the slag discharge port under the action of the washing water.

[0041] S5. Adjust the slag discharge door to slide away from the slag discharge port, and clean the accumulated impurities out of the filter box at the slag discharge port.

[0042] The tropicamide synthesis mother liquor recovery system and method of the present invention have the following advantages over the prior art:

[0043] (1) The tropicamide synthesis mother liquor recovery system of this application, by setting the filter box as a rectangular box, facilitates the assembly of the rectangular mounting frame, and at the same time facilitates the first drive motor to adjust the mounting frame to rotate. By setting the mounting frame to be rotatable, when it is necessary to clean the impurities attached to the filter bag, the mounting frame is adjusted to rotate, and the filter surface of the filter bag is pushed out of the mounting frame by the top plate, so that the flushing water in the flow channel can wash the surface of the filter bag. The impurities after washing are then accumulated on the fine filter screen. By setting the rotating adapter plate, the fine filter screen can be rotated. By rotating the fine filter screen to tilt, the flushing water can flush the impurities to the slag discharge port. By opening the slag discharge door, the impurities at the slag discharge port are cleaned out. Thus, this application can complete the cleaning of impurities attached to the filter bag and fine filter screen without removing the filter bag and fine filter screen, which is convenient to use.

[0044] (2) By setting a toothed roller, when the top plate needs to be moved, the second drive motor is started. At this time, the second drive motor drives the toothed roller to rotate. Under the action of the toothed groove that meshes with it, the toothed roller drives the top plate to slide along the first assembly hole, thereby completing the automatic driving process of the top plate. By opening a toothed groove on the top plate, the connection and sealing between the top plate and the first assembly hole can be increased due to the action of multiple toothed protrusions at the toothed groove, preventing the tropicamide synthesis mother liquor from overflowing from the first assembly hole, which is convenient for use.

[0045] (3) By setting a drive belt, when it is necessary to adjust the slider to move upward, the third drive motor is started. At this time, the third drive motor drives the drive roller to rotate, the drive roller drives the drive belt to rotate along the second assembly hole, and the drive belt drives the slider to move, thereby completing the automatic sliding drive process of the slider. By setting a drive belt to drive the slider, the third drive motor of this application does not need to be set inside the filter box to complete the drive process of the slider. By setting the drive belt to cover the connecting slide, since the drive belt is set to rotate, the drive belt can always maintain the sealing treatment of the connecting slide during the movement of the slider, preventing the tropicamide synthesis mother liquor from overflowing from the connecting slide, which is convenient to use. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1This is a frontal perspective three-dimensional schematic diagram of the tropicamide synthesis mother liquor recovery system of the present invention;

[0048] Figure 2 This is a bottom-view perspective view of the tropicamide synthesis mother liquor recovery system of the present invention.

[0049] Figure 3 This is a three-dimensional schematic diagram of the filter box of the tropicamide synthesis mother liquor recovery system of the present invention;

[0050] Figure 4 The tropicamide synthesis mother liquor recovery system of the present invention Figure 3 Rear-view perspective view of the structure shown;

[0051] Figure 5 The tropicamide synthesis mother liquor recovery system of the present invention Figure 3 Left view of the structure shown;

[0052] Figure 6 The tropicamide synthesis mother liquor recovery system of the present invention Figure 5 Cross-sectional view of the structure at point AA shown;

[0053] Figure 7 This is a schematic diagram of the connection method between the sliding sleeve and the fine filter screen in the tropicamide synthesis mother liquor recovery system of the present invention;

[0054] Figure 8 This is a three-dimensional schematic diagram of the internal structure of the filter box of the tropicamide synthesis mother liquor recovery system of the present invention;

[0055] Figure 9 This is a schematic diagram showing the connection between the second discharge pipe and the upper filter box of the tropicamide synthesis mother liquor recovery system of the present invention;

[0056] Figure 10 The tropicamide synthesis mother liquor recovery system of the present invention Figure 9 A cross-sectional view of the structure shown.

[0057] In the diagram: 1. pH stirring and adjusting tank body; 11. Feeding pipe fitting; 111. Feeding pipe; 112. Measuring cylinder; 101. Second discharge pipe; 102. Third discharge pipe; 2. Filter box; 20. First discharge pipe; 21. Flow channel; 22. Slag discharge port; 23. Sliding hole; 24. First assembly hole; 25. Connecting chute; 26. Second assembly hole; 31. Mounting frame; 32. Filter bag; 33. Fine filter screen; 34. First drive motor; 41. Adapter plate; 42. Sliding sleeve plate; 43. End plate; 4 31. Arc-shaped chute; 44. Sliding block; 51. Slag discharge gate; 52. Inner baffle; 53. Sliding rod; 54. Guide block; 61. Top plate; 611. Toothed groove; 62. Second drive motor; 63. Toothed roller; 71. Drive roller; 72. Drive belt; 73. Mounting side plate; 74. Third drive motor; 81. Lock; 82. Clamping block; 91. Upper filter box; 911. Inlet; 92. Lower filter box; 921. Outlet; 93. Filter screen; 94. Outer sealing sleeve; 95. Anti-backflow baffle; 96. Connecting sleeve. Detailed Implementation

[0058] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0059] like Figures 1-10As shown, the tropicamide synthesis mother liquor recovery system of the present invention is characterized by comprising: a pH stirring and adjusting tank body 1, a filter box 2, an mounting frame 31, a filter bag 32, a fine filter screen 33, a first drive motor 34, a transition plate 41, a sliding sleeve plate 42, a slag discharge door 51, and a top plate 61. The filter box 2 is a square box, connected to the pH stirring and adjusting tank body 1 via a first discharge pipe 20, and has a flow channel 21 inside for the tropicamide synthesis mother liquor to flow through. The mounting frame 31 is rotatably disposed inside the flow channel 21, and the filter bag 32 is fixedly connected to the inner side of the mounting frame 31. The filter bag 32 is used to filter large-volume impurities in the mother liquor flowing through the flow channel 21. The fine filter screen 33 is located inside the flow channel 21 and is positioned to one side of the filter bag 32 in the direction of mother liquor flow, used to filter the flowing mother liquor. Small volume impurities in the mother liquor of channel 21; the first drive motor 34 is set on one side of the filter box 2 to drive the mounting frame 31 to rotate; a slag discharge port 22 is opened on one side of the filter box 2, and the adapter plate 41 is rotatably set on the inner side of the slag discharge port 22 and sealed and fitted with the hole wall of the slag discharge port 22; the sliding sleeve plate 42 is slidably fitted on the outer side of the adapter plate 41 and fixedly connected with the fine filter screen 33; the slag discharge door 51 is slidably set on one side of the filter box 2 to slide to block the slag discharge port 22; a first assembly hole 24 is opened on one side of the filter box 2, and the top plate 61 is slidably set inside the first assembly hole 24 and is opposite to the mounting frame 31. The top plate 61 is sealed and fitted with the hole wall of the first assembly hole 24. When the top plate 61 slides, one end of the top plate 61 slides into the filter box 2, and the other end of the top plate 61 is located on the outer side of the filter box 2.

[0060] In specific implementation, a feeding pipe 11 is connected to the pH stirring and adjusting tank body 1. The feeding pipe 11 is used to supply acid and alkali solutions. The feeding pipe 11 includes a feeding pipe 111 and a metering cylinder 112. The feeding pipe 111 is connected between the pH stirring and adjusting tank body 1 and the metering cylinder 112. A solenoid valve is installed on the feeding pipe 111, and a metering scale is installed on the metering cylinder 112.

[0061] In practice, the tropicamide synthesis mother liquor is supplied to the filter chamber 2. The mother liquor flows within the flow channel 21, passing through the filter bag 32 and the fine filter screen 33, and then flows out from the first discharge pipe 20 to the pH stirring and adjusting tank body 1. During this process, the filter bag 32 filters large-volume impurities in the tropicamide synthesis mother liquor, and the fine filter screen 33 filters small-volume impurities. When it is necessary to clean impurities adhering to the filter bag 32 and the fine filter screen 33, the mounting frame 31 is rotated 90 degrees by the first drive motor 34. At this time, the filter surface of the filter bag 32 faces away from the top plate 61, and the top plate 61 is slid into the filter chamber 2 until it abuts against the filter. The filter bag 32 is pressed against the other side of the mounting frame 31; the end of the fine filter screen 33 away from the sliding sleeve 42 is adjusted to move upward, at which time the adapter plate 41 rotates in the slag discharge port 22, and the sliding sleeve 42 is kept covering the flow channel 21 by sliding; cleaning water is supplied into the filter box 2, and the cleaning water first washes the impurities attached to the surface of the filter bag 32 in the flow direction, and then washes the impurities attached to the surface of the fine filter screen 33. The washing water flows through the fine filter screen 33 to the first discharge pipe 20, and the impurities accumulate at the slag discharge port 22 under the action of the washing water; the slag discharge door 51 is adjusted to slide away from the slag discharge port 22, and the accumulated impurities are cleaned out of the filter box 2 at the slag discharge port 22.

[0062] The tropicamide synthesis mother liquor recovery system of this application, by setting the filter box 2 as a rectangular box, facilitates the assembly of the rectangular mounting frame 31, and also facilitates the adjustment of the mounting frame 31 by the first drive motor 34. By setting the mounting frame 31 to be rotatable, when it is necessary to clean the impurities attached to the filter bag 32, the mounting frame 31 is adjusted to rotate, and the filter surface of the filter bag 32 is pushed out of the mounting frame 31 by the top plate 61, so that the flushing water in the flow channel 21 can wash the surface of the filter bag 32. The impurities after washing then accumulate on the fine filter screen 33. By setting the rotating adapter plate 41, the fine filter screen 33 can be rotated. By rotating the fine filter screen 33 to an inclined position, the flushing water can flush the impurities to the slag discharge port 22. By opening the slag discharge door 51, the impurities at the slag discharge port 22 are cleaned out. Thus, this application can complete the cleaning of impurities attached to the filter bag 32 and the fine filter screen 33 without removing the filter bag 32 and the fine filter screen 33, which is convenient to use.

[0063] As a preferred embodiment, it also includes an end plate 43 and a slider 44, wherein the end plate 43 is disposed at the end of the fine filter screen 33 away from the sliding sleeve plate 42, and the side wall of the end plate 43 away from the fine filter screen 33 is an arc-shaped wall; an arc-shaped groove 431 is provided on the arc-shaped wall of the end plate 43, and the slider 44 is slidably connected to the arc-shaped groove 431 and slidably connected to the inner wall of the filter box 2.

[0064] In practice, when it is necessary to adjust the tilt of the fine filter screen 33, the adjusting slider 44 moves upward. At this time, the slider 44 slides along the arc-shaped wall of the end plate 43, causing one end of the fine filter screen 33 to move upward, thereby completing the tilt adjustment of the fine filter screen 33. By setting the slider 44 to slide along the arc-shaped wall of the end plate 43, it is possible to achieve that while one end of the fine filter screen 33 is rotating, the other end can move upward.

[0065] In a preferred embodiment, the filter box 2 is further provided with an inner baffle 52 and a sliding rod 53. A sliding hole 23 is provided on one side wall of the corresponding slag discharge port 22. The sliding rod 53 is slidably disposed inside the sliding hole 23. The two ends of the sliding rod 53 are fixedly connected to the slag discharge door 51 and the inner baffle 52, respectively. The inner baffle 52 abuts against the sliding sleeve 42 and is sealed and fitted with the inner wall of the filter box 2 and the sliding sleeve 42.

[0066] By setting the inner baffle 52 to abut against and fit the sliding sleeve 42, the inner baffle 52 can cooperate with the sliding sleeve 42 to form a sealed space, preventing the tropicamide synthesis mother liquor from flowing to the slag discharge port 22. At the same time, by setting the sliding rod 53 to connect the inner baffle 52 and the slag discharge door 51, it is convenient to adjust the movement of the inner baffle 52 simultaneously when adjusting the movement of the slag discharge door 51, so as to open the slag discharge port 22, which is convenient for use.

[0067] It also includes a flow guide block 54, which is set on the top of the inner baffle 52 and is sealed and fitted to the inner wall of the filter box 2. One side wall of the flow guide block 54 is an inclined wall. The distance between the top of the flow guide block 54 and the bottom wall of the inner baffle 52 is H1, and the height of the sliding hole 23 is H2, where H1 > H2.

[0068] This design, guided by the inclined sidewall of the guide block 54, directs the mother liquor to the fine filter screen 33. By setting H1 > H2, the inner baffle 52, in conjunction with the guide block 54, can always cover the sliding hole 23, preventing the mother liquor from overflowing from the sliding hole 23 and facilitating use.

[0069] In a preferred embodiment, the device further includes a second drive motor 62 and a toothed roller 63. The second drive motor 62 is mounted on the filter housing 2, and the toothed roller 63 is fixedly connected to the output shaft of the second drive motor 62. A toothed groove 611 is provided on the top plate 61, and the toothed roller 63 meshes with the toothed groove 611.

[0070] In practice, when it is necessary to adjust the movement of the top plate 61, the second drive motor 62 is activated. The second drive motor 62 then drives the toothed roller 63 to rotate. Under the action of the toothed groove 611 meshing with it, the toothed roller 63 drives the top plate 61 to slide along the first assembly hole 24, thus completing the automatic driving process of the top plate 61. By opening the toothed groove 611 on the top plate 61, the multiple toothed protrusions at the groove 611 increase the sealing between the top plate 61 and the first assembly hole 24, preventing the tropicamide synthesis mother liquor from overflowing from the first assembly hole 24, thus facilitating use.

[0071] In a preferred embodiment, the filter housing 2 is further provided with a drive roller 71 and a drive belt 72. A connecting groove 25 is provided on one side wall of the inner cavity of the filter housing 2, and a second mounting hole 26 communicating with the connecting groove 25 is provided on the outer side of the filter housing 2. The second mounting hole 26 is an annular hole. The drive roller 71 is rotatably disposed on one side of the filter housing 2. The drive belt 72 passes around the second mounting hole 26 and is connected to the drive roller 71 for transmission. The drive belt 72 covers the connecting groove 25, and the slider 44 passes through the connecting groove 25 and is connected to the drive belt 72.

[0072] It also includes a mounting side plate 73 and a third drive motor 74. The mounting side plate 73 is located on one side of the corresponding drive roller 71 of the filter box 2, and the third drive motor 74 is located on the mounting side plate 73. The output shaft of the third drive motor 74 is connected to the drive roller 71 for transmission.

[0073] In specific implementation, when it is necessary to adjust the slider 44 to move upward, the third drive motor 74 is activated. At this time, the third drive motor 74 drives the drive roller 71 to rotate, and the drive roller 71 drives the drive belt 72 to rotate along the second assembly hole 26. The drive belt 72 drives the slider 44 to move, thereby completing the automatic sliding drive process of the slider 44. By setting the drive belt 72 to drive the slider 44, the third drive motor 74 of this application does not need to be set inside the filter box 2 to complete the drive process of the slider 44. By setting the drive belt 72 to cover the connecting slide groove 25, since the drive belt 72 is rotated, the drive belt 72 can always maintain the sealing treatment of the connecting slide groove 25 during the movement of the slider 44, preventing the tropicamide synthesis mother liquor from overflowing from the connecting slide groove 25, which is convenient for use.

[0074] As a preferred embodiment, it also includes a latch 81 and a locking block 82, wherein the latch 81 is disposed on the slag discharge door 51, and at least two locking blocks 82 are disposed on the side wall of the corresponding slag discharge door 51 of the filter box 2, and the multiple locking blocks 82 are distributed in the height direction, and the latch 81 is selectively connected to the multiple locking blocks 82.

[0075] This design allows the slag discharge door 51 to be positioned at different locations when the slag discharge port 22 is closed or open during the adjustment of the sliding of the slag discharge door 51. This makes it convenient to use.

[0076] In a preferred embodiment, the system further includes an upper filter box 91, a lower filter box 92, a filter screen 93, an outer sealing sleeve 94, and an anti-backflow baffle 95. A second discharge pipe 101 is connected to the outlet of the pH stirring and adjusting tank body 1. The upper filter box 91 is detachably connected to the second discharge pipe 101, and the upper filter box 91 has an inlet 911 connected to the second discharge pipe 101. The lower filter box 92 abuts against and communicates with the upper filter box 91, and a bottom opening of the lower filter box 92 is provided with… The outlet 921 is connected to the third discharge pipe 102; the filter screen 93 is set inside the lower filter box 92 and covers the outlet 921 to filter impurities flowing through the outlet 921; the outer sealing sleeve 94 is slidably sleeved on the outside of the third discharge pipe 102 to slide to cover the contact point between the upper filter box 91 and the lower filter box 92; the backflow prevention baffle 95 is a frustoconical cover, set on the top wall of the inner cavity of the upper filter box 91, and the inlet 911 is located inside the backflow prevention baffle 95.

[0077] In practice, the mother liquor discharged from the pH stirring and adjusting tank body 1 first flows into the interior of the upper filter box 91 through the second discharge pipe 101, and then flows into the interior of the lower filter box 92 through the anti-backflow baffle 95, and flows out from the third discharge pipe 102 through the outlet 921. During this process, the filter screen 93 set at the outlet 921 can filter out excess impurities generated during pH adjustment, making it convenient to use.

[0078] It should be noted that the third discharge pipe 102, as a pipe connecting to the next piece of equipment, is in a fixed state. Therefore, the outer sealing sleeve 94 can cover and seal the contact point between the upper filter box 91 and the lower filter box 92.

[0079] By setting up an upper filter box 91 and a lower filter box 92, when it is necessary to clean impurities at the filter screen 93, it is only necessary to adjust the outer sealing sleeve 94 to slide it away from the lower filter box 92, and the lower filter box 92 can be taken out for cleaning, which is convenient to use.

[0080] Preferably, the top of the upper filter box 91 is provided with a connecting sleeve 96, the water inlet 911 is located inside the connecting sleeve 96, and the second discharge pipe 101 is sealed and inserted into the inner side of the connecting sleeve 96. The connecting sleeve 96 is connected to the second discharge pipe 101 by bolts, and the outer sealing sliding sleeve 94 is connected to the third discharge pipe 102 by bolts.

[0081] This invention also proposes a method for recovering tropicamide synthesis mother liquor, which is accomplished through the aforementioned tropicamide synthesis mother liquor recovery system, and includes the following steps:

[0082] Step 1: The tropicamide synthesis mother liquor is supplied to the filter box 2. At this time, the tropicamide synthesis mother liquor passes through the filter bag 32 and the fine filter screen 33 and is supplied to the pH stirring and adjusting tank body 1 from the first discharge pipe 20. The filter bag 32 filters out the large volume impurities in the tropicamide synthesis mother liquor, and the fine filter screen 33 filters out the small volume impurities in the tropicamide synthesis mother liquor.

[0083] Step 2: When it is necessary to clean the impurities attached to the filter bag 32 and the fine filter screen 33, the first drive motor 34 is used to control the mounting frame 31 to rotate 90 degrees and control the top plate 61 to slide into the filter box 2 until the top plate 61 abuts against the filter bag 32 and presses the filter bag 32 against the other side of the mounting frame 31.

[0084] Step 3: Adjust the end of the fine filter screen 33 away from the sliding sleeve plate 42 to move upward;

[0085] Step 4: Supply cleaning water into the filter box 2. The cleaning water first washes away the impurities attached to the surface of the filter bag 32 in the direction of flow, and then washes away the impurities attached to the surface of the fine filter screen 33. The washing water flows through the fine filter screen 33 to the first discharge pipe 20. The impurities accumulate at the slag discharge port 22 under the action of the washing water.

[0086] Step 5: Adjust the slag discharge door 51 to slide out of the slag discharge port 22, and clean the accumulated impurities out of the filter box 2 at the slag discharge port 22.

[0087] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A system for recovering a toipramine synthesis mother liquor, characterized by: The pH stirring adjusting tank body, the filter box, the mounting frame, the filter bag, the fine filter screen, the first drive motor, the adapter plate, the sliding sleeve plate, the slag discharge door and the top plate are included, The filter box is a square box, the filter box is communicated with the pH stirring adjusting tank body through a first discharge pipe, and a flow channel for tolcipane synthesis mother liquor circulation is formed in the filter box; The mounting frame is rotationally arranged in the flow channel, and the filter bag is fixedly connected to the inner side of the mounting frame, and the filter bag is used for filtering large-volume impurities in the mother liquor circulating in the flow channel; The fine filter screen is located in the flow channel and on one side of the filter bag in the flow direction of the mother liquor, and is used for filtering small-volume impurities in the mother liquor circulating in the flow channel; The first drive motor is arranged on one side of the filter box and is used for driving the mounting frame to rotate; A slag discharge port is formed in one side of the filter box, the adapter plate is rotationally arranged in the inner side of the slag discharge port and is sealingly attached to the hole wall of the slag discharge port; The sliding sleeve plate is slidingly arranged on the outer side of the adapter plate and is fixedly connected with the fine filter screen; The slag discharge door is slidingly arranged on one side of the filter box and is used for sliding to block the slag discharge port; A first assembly hole is formed in one side of the filter box, the top plate is slidingly arranged in the first assembly hole and is opposite to the mounting frame, the top plate is sealingly attached to the hole wall of the first assembly hole, when the top plate slides, one end of the top plate slides to the inner side of the filter box, and the other end of the top plate is located on the outer side of the filter box.

2. The system for recovering a toipcaride synthesis mother liquor according to claim 1, characterized in that: The end plate and the sliding block are further included, The end plate is arranged on one end of the fine filter screen away from the sliding sleeve plate, and the side wall of the end plate away from the fine filter screen is an arc-shaped wall; An arc-shaped sliding groove is formed in the arc-shaped wall of the end plate, the sliding block is slidingly connected with the arc-shaped sliding groove and is slidingly connected with the inner wall of the filter box.

3. The system for recovering a toipcaride synthesis stock solution of claim 1, wherein: The inner baffle and the sliding rod are further included, A sliding hole is formed in the side wall of the filter box corresponding to the slag discharge port, the sliding rod is slidingly arranged in the sliding hole, and the two ends of the sliding rod are fixedly connected with the slag discharge door and the inner baffle respectively, the inner baffle abuts against the sliding sleeve plate and is sealingly attached to the inner wall of the filter box and the sliding sleeve plate.

4. The system for recovering a toipcaride synthesis mother liquor according to claim 3, characterized in that: The flow guide block is further included, The flow guide block is arranged on the top of the inner baffle and is sealingly attached to the inner wall of the filter box, one side wall of the flow guide block is an inclined wall, the distance between the top end of the flow guide block and the bottom wall of the inner baffle is H1, the hole height of the sliding hole is H2, and H1>H2.

5. The system for recovering a toipcaride synthesis stock solution of claim 1, wherein: The second drive motor and the toothed roller are further included, The second drive motor is arranged on the filter box, the toothed roller is fixedly connected with the output shaft of the second drive motor, a tooth groove is formed in the top plate, and the toothed roller is engaged with the tooth groove.

6. The system for recovering a toipcaride synthesis mother liquor of claim 2, wherein: The drive roller and the drive belt are further included, A connecting sliding groove is formed in one side wall of the inner cavity of the filter box, and a second assembly hole is formed in the outer side of the filter box and is communicated with the connecting sliding groove, and the second assembly hole is an annular hole. A drive roller is rotatably arranged on one side of the filter box body, the drive belt is in transmission connection with the drive roller through the second assembly hole, the drive belt cover covers the connecting sliding groove, and the sliding block is connected with the drive belt through the connecting sliding groove.

7. The system for recovering a toipcaride synthesis mother liquor according to claim 6, characterized in that: Further comprising a mounting side plate and a third driving motor, wherein, The mounting side plate is arranged on one side of the filter box body corresponding to the drive roller, and the third driving motor is arranged on the mounting side plate, and the output shaft of the third driving motor is in transmission connection with the drive roller.

8. The system for recovering a toipcaride synthesis mother liquor according to claim 3, characterized in that: Further comprising a lock catch and a clamping block, wherein, The lock catch is arranged on the slag discharge door, and at least two clamping blocks are arranged on the side wall of the filter box body corresponding to the slag discharge door, and a plurality of clamping blocks are distributed in the height direction, and the lock catch is selectively connected with a plurality of clamping blocks.

9. The system for recovering a toipcaride synthesis stock solution of claim 1, wherein: Further comprising an upper filter box, a lower filter box, a filter screen, an outer sealing sliding sleeve and an anti-backflow baffle cover, wherein, The pH stirring adjusting tank body is communicated with a second discharge pipe at the discharge port, the upper filter box is detachably connected with the second discharge pipe, and a water inlet is formed in the upper filter box and communicated with the second discharge pipe; The lower filter box is in abutment with the upper filter box and is communicated with the upper filter box, a water outlet is formed in the bottom of the lower filter box, and the water outlet is communicated with the second discharge pipe; A filter screen is arranged in the interior of the lower filter box and covers the water outlet for filtering impurities flowing through the water outlet; An outer sealing sliding sleeve is slidably sleeved on the outside of the second discharge pipe for sliding to cover the abutment between the upper filter box and the lower filter box; The anti-backflow baffle cover is a conical frustum cover arranged at the top wall of the inner cavity of the upper filter box, and the water inlet is located on the inside of the anti-backflow baffle cover.

10. A method for recovering a toipramine synthesis mother liquor, characterized by: The system for recovering a tolonidine synthesis mother liquor according to any one of claims 1 to 9 is completed, comprising the following steps: S1, supply the tolonidine synthesis mother liquor to the filter box, at this time the tolonidine synthesis mother liquor passes through the filter bag and the fine filter screen, and is supplied to the pH stirring adjusting tank body from the first discharge pipe, the filter bag filters large-volume impurities in the tolonidine synthesis mother liquor, and the fine filter screen filters small-volume impurities in the tolonidine synthesis mother liquor; S2, when it is necessary to clean the impurities attached to the filter bag and the fine filter screen, rotate the mounting frame by 90 degrees through the first driving motor, and control the top plate to slide into the interior of the filter box until the top plate abuts against the filter bag and presses the filter bag to the other side of the mounting frame; S3, control the fine filter screen to move upward away from one end of the sliding sleeve plate; S4, supply cleaning water into the filter box, the cleaning water first washes the impurities attached to the surface of the filter bag in the flow direction, and then washes the impurities attached to the surface of the fine filter screen, the washing water passes through the fine filter screen and flows to the first discharge pipe, and the impurities are accumulated at the slag discharge port under the action of the washing water; S5, adjust the slag discharge door to slide away from the slag discharge port, and clean the accumulated impurities out of the filter box at the slag discharge port.

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