Multi-stage filtering device for producing dichloro propyl diethylene glycol dimaleate

Abstract

The utility model relates to the technical field of dichloro propyl diethylene glycol dimaleate, in particular to a multi-stage filtering device for producing dichloro propyl diethylene glycol dimaleate, which comprises a containing barrel, a filtering assembly, a driving assembly and a cleaning assembly, a screen and the inner wall of the containing barrel are obliquely installed, a horizontal flow field of a traditional plane screen is broken through, and the horizontal flow field of the screen is improved. The flow speed in a low-position area is high so as to enhance scouring force, the flow speed in a high-position area is used for accelerating liquid diversion by using an inclination angle, the design effectively avoids impurity deposition in a local low-speed area, inhibits the vicious circle of blockage-flow speed reduction-blockage intensification, prolongs the effective filtering time of the screen and improves the filtering effect of the screen. The driving assembly can drive the sliding block to slide in the sliding groove in a reciprocating mode, so that the screen generates periodic micro-amplitude vibration or displacement, and impurities attached to the surface of the screen are removed in real time in the filtering process in cooperation with the cleaning assembly on the side face.

Description

Technical Field

[0001] This utility model relates to the field of dichloropropyl diethylene glycol dimaleate technology, specifically a multi-stage filtration device for the production of dichloropropyl diethylene glycol dimaleate. Background Technology

[0002] As is well known, in the industrial production of dichloropropyl diethylene glycol dimaleate, multi-stage filtration is a key process for separating reaction products and removing impurities. As a fine chemical intermediate, the synthesis of this compound is often accompanied by polymerization byproducts, unreacted monomers and inorganic salt impurities. The effective separation of these impurities is crucial to the purity of the product and the stability of subsequent processes.

[0003] The screen support structure of existing multi-stage filtration devices is mostly planar. When liquid flows through the screen, there is an uneven flow velocity distribution. In some areas, the flow velocity is too low, which leads to accelerated impurity deposition, while the flushing force in high-flow-velocity areas is insufficient to prevent adsorption, forming a vicious cycle of "clogging-flow velocity reduction-aggravated clogging". Once screen clogging occurs, the machine needs to be stopped for disassembly, cleaning or replacement of filter media. A single maintenance can take 2-4 hours, which seriously affects the continuous operation of the production line. In addition, frequent disassembly reduces the mechanical strength of the screen and increases the risk of breakage. Summary of the Invention

[0004] Technical problems to be solved

[0005] In order to overcome the problem of easy clogging of the screen in the existing multi-stage filtration device for the production of dichloropropyl diethylene glycol dimaleate, this utility model provides a multi-stage filtration device for the production of dichloropropyl diethylene glycol dimaleate with a screen that is not easily clogged.

[0006] Technical solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage filtration device for the production of dichloropropyl diethylene glycol dimaleate, comprising:

[0008] Container;

[0009] A filter assembly is installed inside the container. The filter assembly includes a chute, which is opened on both sides of the container. A slider is slidably arranged in the chute, and a screen is fixedly arranged between the sliders. The screens are distributed in a matrix inside the container, and the screens are installed at an angle to the inner wall of the container.

[0010] A drive assembly, the drive assembly being mounted on top of the container; and

[0011] A cleaning assembly is installed on the side of the holding tank, and the number of cleaning assemblies is the same as the number of sieves.

[0012] Preferably, the driving component includes a sliding column corresponding to the number of the slide grooves. The sliding column is slidably disposed in the slide grooves. The sliding column is fixedly disposed with the slider. One end of the sliding column passes through the holding bucket and extends to the outside. A movable ring is fixedly disposed on the top support of the sliding column.

[0013] Furthermore, a mounting plate is fixedly installed on the top of the container, and support seats are fixedly installed on both sides of the mounting plate. A sliding rod is slidably installed on the support seat. One side of the sliding rod is fixedly installed with the moving ring. A connecting ring is fixedly installed between the sliding rods. A first rotating ring is rotatably installed inside the connecting ring, and a second rotating ring is rotatably installed inside the first rotating ring. The second rotating ring is eccentrically installed relative to the connecting ring.

[0014] Furthermore, a fixing rod is fixedly installed on the mounting plate, and a motor is fixedly installed on the fixing rod. The output shaft of the motor is connected to the second rotating ring by a key.

[0015] In a further embodiment, the cleaning component includes an output port corresponding to the number of screens, the output port being located on the side of the holding bucket and communicating with the inside of the holding bucket, and a shielding frame corresponding to the number of output ports being fixedly provided on the side of the holding bucket.

[0016] Based on the aforementioned scheme, a sieve plate can be detachably installed at the bottom of the shielding frame, and a handle is fixedly installed on the side of the sieve plate.

[0017] Furthermore, based on the aforementioned solution, a baffle is fixedly installed at the bottom of the bottom shielding frame, and the space between the baffle and the bottom shielding frame is in communication with the holding bucket.

[0018] Furthermore, based on the aforementioned scheme, limit seats are fixedly provided on both sides of the sieve plate, limit wrenches are rotatably provided on the limit seats, limit rings are rotatably provided on the limit wrenches, and auxiliary seats corresponding to the number of limit rings are fixedly provided on the side of the holding bucket, and the limit rings are adapted to the auxiliary seats.

[0019] Beneficial effects

[0020] This multi-stage filtration device for the production of dichloropropyl diethylene glycol dimaleate features a screen installed at an angle to the inner wall of the container. This breaks the horizontal flow field of traditional flat screens, creating a gradient flow velocity as the liquid flows through the screen—a faster flow velocity in the lower region to enhance the scouring force, and a faster flow velocity in the higher region using the tilt angle to accelerate liquid guidance. This design effectively avoids impurity deposition in local low-velocity areas, suppresses the vicious cycle of "clogging-flow velocity reduction-aggravated clogging," and extends the effective filtration time of the screen. The drive component can drive the slider to slide back and forth in the chute, causing the screen to produce periodic micro-vibrations or displacements. Combined with the side cleaning component, impurities attached to the screen surface are removed in real time during the filtration process. Attached Figure Description

[0021] Figure 1 This is a side view of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the filter assembly of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the sieve of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the baffle of this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the drive component of this utility model;

[0026] Figure 6 This is a schematic diagram of the structure of the limiting seat of this utility model.

[0027] In the diagram: 1. Holding tank; 2. Filter assembly; 3. Slide chute; 4. Slider; 5. Screen; 6. Drive assembly; 7. Cleaning assembly; 8. Sliding column; 9. Moving ring; 10. Mounting plate; 11. Support base; 12. Sliding rod; 13. Connecting ring; 14. First rotating ring; 15. Second rotating ring; 16. Fixed rod; 17. Motor; 18. Output port; 19. Shielding frame; 20. Screen plate; 21. Handle; 22. Baffle; 23. Limit seat; 24. Limit wrench; 25. Limit ring; 26. Auxiliary seat. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] See Figures 1-6A multi-stage filtration device for the production of dichloropropyl diethylene glycol dimaleate includes a holding tank 1, a filtration assembly 2, a drive assembly 6, and a cleaning assembly 7.

[0030] The holding tank 1 is the basic component of the entire filtration device, used to hold the material to be filtered. It is made of corrosion-resistant materials, such as stainless steel or special plastics, to prevent the material from corroding the tank body, ensuring the purity of the material and the service life of the device.

[0031] The grooves 3 of the filter assembly 2 are located on both sides of the container 1. The grooves 3 are made of metal and are tightly connected to the container 1 by machining. The sliders 4 are slidably arranged in the grooves 3 and are made of wear-resistant metal or plastic to ensure that the sliders 4 can slide smoothly in the grooves 3. Screens 5 are fixedly arranged between the sliders 4. The screens 5 are distributed in a matrix in the container 1. The screens 5 are made of metal wire mesh or polymer material and have a certain strength and filtration accuracy. The screens 5 are installed at an angle to the inner wall of the container 1. This angled design helps the material flow and filter on the screens 5, improving filtration efficiency. The screens 5 of different levels have different pore sizes to achieve multi-stage filtration of the material and ensure that the quality of the final product meets the requirements.

[0032] The drive assembly 6 is installed on the top of the container 1. Its function is to provide power for the operation of the filter assembly 2. The cleaning assembly 7 is installed on the side of the container 1. The number of cleaning assemblies is the same as the number of screens 5. The function of the cleaning assembly 7 is to clean the screens 5, prevent the screens 5 from clogging, and ensure the filtration effect.

[0033] First, refer to Figure 5In this embodiment, the drive assembly 6 includes sliding columns 8 corresponding to the number of chutes 3. The sliding columns 8 are made of high-strength metal, such as alloy steel. These sliding columns 8 are slidably disposed within the chutes 3 and securely fixed to the slider 4 via high-strength bolts. One end of each sliding column 8 passes through the container 1 and extends to the outside. This design facilitates connection to an external drive structure, thereby transmitting power to the slider 4 and driving the screen 5 to perform a filtering action. A movable ring 9, made of metal and fixedly mounted on the top of each sliding column 8, is adapted to the top structure of the sliding column 8. The connection between the movable ring 9 and the sliding column 8 ensures a stable connection and prevents loosening during device operation. The mounting plate 10 fixed to the top of the container 1 serves as the support base for other driving components. It is made of sturdy metal sheet and is tightly fixed to the top of the container 1 by welding or bolts. The support seats 11 on both sides of the mounting plate 10 are also made of metal. The support seats 11 are provided with tracks for the sliding rods 12 to slide. The sliding rods 12 can slide smoothly within the support seats 11. One side of the sliding rods 12 is fixedly connected to the moving ring 9, so that the moving ring 9 can drive the sliding rods 12 to move linearly. The connecting ring 13 fixed between the two sliding rods 12 is made of metal and serves to connect the two sliding rods 12 and coordinate their movement, ensuring the consistency of the movement of the sliding rods 12.

[0034] A first rotating ring 14 is rotatably disposed inside the connecting ring 13. The first rotating ring 14 is made of wear-resistant metal material, and its inner diameter matches the outer diameter of the connecting ring 13 to ensure flexible and stable rotation. A second rotating ring 15 is rotatably disposed inside the first rotating ring 14. The second rotating ring 15 is also made of metal material and is eccentrically disposed relative to the connecting ring 13. A fixing rod 16, made of metal material, is fixedly disposed on the mounting plate 10 and is securely connected to the mounting plate 10. A motor 17 mounted on the fixing rod 16 serves as the power source for the entire drive assembly 6. The output shaft of the motor 17 is connected to the second rotating ring 15 by a key. The key connection can reliably transmit the torque of the motor 17 to the second rotating ring 15.

[0035] When the motor 17 starts, the output shaft of the motor 17 drives the second rotating ring 15 to rotate. Since the second rotating ring 15 is eccentric relative to the connecting ring 13, its eccentric position changes continuously as the second rotating ring 15 rotates, thereby pushing the first rotating ring 14 to rotate irregularly within the connecting ring 13. This irregular rotation is transmitted to the sliding rod 12 through the connecting ring 13, causing the sliding rod 12 to reciprocate linearly within the support base 11. The reciprocating motion of the sliding rod 12 then drives the sliding column 8 to slide within the sliding groove 3 through the moving ring 9, ultimately driving the slider 4 connected to the sliding column 8 and the screen 5 to reciprocate within the holding tank 1, thereby achieving efficient filtration of materials.

[0036] Then, refer to Figure 2 , Figure 3 and Figure 4 In this embodiment, the cleaning component 7 includes output ports 18 corresponding to the number of screens 5. These output ports 18 are located on the side of the holding tank 1 and are directly connected to the internal space of the holding tank 1. The position of the output ports 18 corresponds to the position of the screens 5 so that impurities intercepted on the screens 5 can be smoothly discharged when the screens 5 are cleaned. The output ports 18 ensure that impurities can be discharged smoothly without causing blockage. The side of the holding tank 1 is fixedly provided with a number of shielding frames 19 corresponding to the number of output ports 18. The shielding frames 19 are made of metal materials, such as stainless steel plates, and are firmly fixed to the side of the holding tank 1 by welding or bolting. The function of the shielding frames 19 is to prevent materials from overflowing from the output ports 18 when the screens 5 are not being cleaned, ensuring the normal operation of the production process. At the same time, it provides a relatively independent space for the installation and operation of the screen plate 20.

[0037] Each shielding frame 19 has a detachable sieve plate 20 at its bottom. The sieve plate 20 is made of a material with certain strength and corrosion resistance, such as metal wire mesh or polymer material sieve 5. The aperture of the sieve plate 20 is selected according to the size of the impurities to be filtered, so as to ensure that the impurities can be effectively intercepted while allowing the liquid to pass through smoothly during the cleaning process. A handle 21 is fixedly installed on the side of the sieve plate 20. The handle 21 is made of metal rod or plastic material, which makes it convenient for the operator to hold and disassemble and install the sieve plate 20. When cleaning the sieve 5, the sieve 5 conveys the screened impurities through the output port 18 to the sieve plate 20 through reciprocating vibration. At the same time, qualified materials will fall from the sieve plate 20 and return to the holding bucket 1 with the help of the baffle 22. Unqualified materials will remain on the sieve plate 20. The sieve plate 20 is then disassembled for cleaning to avoid accumulation.

[0038] A baffle 22 is fixedly installed at the bottom of the bottom shielding frame 19. A specific space is formed between the baffle 22 and the bottom shielding frame 19, and this space is connected to the holding tank 1. The function of the baffle 22 is to further prevent impurities from accidentally flowing out of the bottom shielding frame 19 during the cleaning process, and at the same time, it helps to guide the liquid back into the holding tank 1.

[0039] Finally, see Figure 6In this embodiment, limit seats 23 are fixedly provided on both sides of the sieve plate 20. The limit seats 23 are made of metal and are fixed to the sides of the sieve plate 20 by welding or bolting. A limit wrench 24 is rotatably provided on the limit seat 23. The limit wrench 24 is made of metal rod, and one end is rotatably connected to the limit seat 23 by a pin. The design of the limit wrench 24 allows the operator to control the position of the limit ring 25 by rotating it. The limit ring 25 is rotatably provided on the limit wrench 24. The limit ring 25 is made of metal and is ring-shaped. The container 1 has a structure in the shape of a metal plate. The side of the container 1 is fixed with an auxiliary seat 26 corresponding to the number of limiting rings 25. The auxiliary seat 26 is made of metal and its shape is adapted to the limiting rings 25. When the screen plate 20 is installed at the bottom of the shielding frame 19, the operator can rotate the limiting wrench 24 to make the limiting rings 25 and the auxiliary seat 26 fit tightly. This fit can firmly fix the screen plate 20 at the bottom of the shielding frame 19, preventing the screen plate 20 from being displaced due to the impact or vibration of the material during the filtration process, and ensuring the normal operation of the cleaning component 7.

[0040] Working principle:

[0041] In the production of dichloropropyl diethylene glycol dimaleate, the multi-stage filtration device is first started by activating the motor 17 on the fixed rod 16 of the mounting plate 10. The output shaft of the motor 17 drives the second rotating ring 15 to rotate. Since the second rotating ring 15 is eccentric relative to the connecting ring 13, the rotation of the second rotating ring 15 pushes the first rotating ring 14 to rotate irregularly within the connecting ring 13, which in turn drives the sliding rod 12 to reciprocate linearly within the support base 11. The sliding rod 12 drives the sliding column 8 to slide within the slide groove 3 through the moving ring 9, causing the slider 4 connected to the sliding column 8 and the screen 5 to reciprocate within the holding tank 1, thus starting the filtration process.

[0042] The dichloropropyl diethylene glycol dimaleate material to be filtered enters the holding tank 1. Under the action of gravity and the reciprocating motion of the screen 5, the material flows through the inclined screen 5. The screen 5 is distributed in a matrix and the pore size of different layers is different, realizing multi-stage filtration. The material that meets the requirements passes through the screen 5, while impurities are intercepted on the screen 5. The inclined installation of the screen 5 creates a gradient flow rate of liquid, reducing impurity deposition. The reciprocating motion of the screen 5 driven by the drive component 6 can also prevent impurities from adhering, thus improving filtration efficiency and quality.

[0043] During the filtration process, the screen 5 intercepts more and more impurities. When cleaning is required, the reciprocating vibration of the screen 5 causes the impurities to be transported through the outlet 18 to the corresponding screen plate 20. Qualified materials fall from the screen plate 20 and are guided back into the holding tank 1 by the baffle 22 of the bottom shield frame 19. Unqualified impurities remain on the screen plate 20. The operator rotates the limiting ring 25 on the limiting wrench 24 to separate it from the auxiliary seat 26. The screen plate 20 is then removed from the bottom of the shield frame 19 by the handle 21. The impurities on the screen plate 20 are cleaned. After cleaning, the screen plate 20 is reinstalled in its original position. The limiting wrench 24 is rotated to make the limiting ring 25 cooperate with the auxiliary seat 26 to fix the screen plate 20.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage filtration device for the production of dichloropropyl diethylene glycol dimaleate, characterized in that, include: Container (1); A filter assembly (2) is installed inside the container (1). The filter assembly (2) includes a chute (3) which is opened on both sides of the container (1). A slider (4) is slidably arranged in the chute (3). A screen (5) is fixedly arranged between the sliders (4). The screens (5) are distributed in a matrix in the container (1). The screens (5) are installed at an inclination to the inner wall of the container (1). A drive assembly (6) is mounted on top of the container (1). The drive assembly (6) includes sliding posts (8) corresponding to the number of grooves (3). The sliding posts (8) are slidably disposed within the grooves (3). The sliding posts (8) are fixedly disposed with the slider (4). One end of the sliding posts (8) passes through the container (1) and extends to the outside. A movable ring (9) is fixedly disposed on the top of the sliding posts (8). Cleaning components (7) are installed on the side of the holding bucket (1), and the number of cleaning components (7) is the same as the number of screens (5).

2. The multi-stage filtration device for the production of dichloropropyl diethylene glycol dimaleate according to claim 1, characterized in that, The top of the container (1) is fixedly provided with an installation plate (10), and the two sides of the installation plate (10) are fixedly provided with support seats (11). A sliding rod (12) is slidably provided on the support seat (11). The sliding rod (12) on one side is fixedly provided with the moving ring (9). A connecting ring (13) is fixedly provided between the sliding rods (12). A first rotating ring (14) is rotatably provided inside the connecting ring (13). A second rotating ring (15) is rotatably provided inside the first rotating ring (14). The second rotating ring (15) is eccentrically provided relative to the connecting ring (13).

3. The multi-stage filtration device for the production of dichloropropyl diethylene glycol dimaleate according to claim 2, characterized in that, A fixing rod (16) is fixedly installed on the mounting plate (10), and a motor (17) is fixedly installed on the fixing rod (16). The output shaft of the motor (17) is connected to the second rotating ring (15) by a key.

4. The multi-stage filtration device for the production of dichloropropyl diethylene glycol dimaleate according to claim 1, characterized in that, The cleaning component (7) includes an output port (18) corresponding to the number of the screens (5). The output port (18) is opened on the side of the container (1) and communicates with the inside of the container (1). A shielding frame (19) corresponding to the number of the output ports (18) is fixedly provided on the side of the container (1).

5. The multi-stage filtration device for the production of dichloropropyl diethylene glycol dimaleate according to claim 4, characterized in that, Each of the shielding frames (19) has a detachable sieve plate (20) at its bottom, and a handle (21) is fixedly provided on the side of the sieve plate (20).

6. The multi-stage filtration device for the production of dichloropropyl diethylene glycol dimaleate according to claim 5, characterized in that, A baffle (22) is fixedly provided at the bottom of the shielding frame (19) located at the bottom, and the space between the baffle (22) and the shielding frame (19) located at the bottom is connected to the holding bucket (1).

7. The multi-stage filtration device for the production of dichloropropyl diethylene glycol dimaleate according to claim 6, characterized in that, Limiting seats (23) are fixedly provided on both sides of the sieve plate (20). A limiting wrench (24) is rotatably provided on the limiting seat (23). A limiting ring (25) is rotatably provided on the limiting wrench (24). An auxiliary seat (26) corresponding to the number of limiting rings (25) is fixedly provided on the side of the holding bucket (1). The limiting ring (25) is adapted to the auxiliary seat (26).

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