Multistage filtering reaction device for chemical engineering experiment

Abstract

The utility model discloses a kind of multistage filtering reaction devices for chemical engineering experiment, it is related to chemical engineering experimental technical field, including reaction tank;Filter screen, its aperture is gradient tapering shape along the diameter direction of reaction tank, the filter screen is horizontally arranged in the cavity in the tank is divided into filter area and reaction area by reaction tank;Elastic circulation pipe, it is arranged in filter area and extends to the top of reaction tank, the water outlet end of circulation pipe is vertically arranged in the top of filter screen in initial state.The utility model uses the design of vertical and maximum pipe diameter when filtering large particles of chemical liquid, and after circulating filtration, the design of inclination and gradually tapering pipe diameter is used to filter small particles, the overall filtration system can effectively optimize liquid flow path, not only improve the filtering efficiency of large particles, but also ensure that small particles can accurately pass through small aperture area for filtering, with the effect of improving filtering effect, enhancing system stability, reducing energy consumption and prolonging equipment life.

Description

Technical Field

[0001] This utility model relates to the field of chemical engineering experimental technology, specifically a multi-stage filtration reaction device for chemical engineering experiments. Background Technology

[0002] A multistage filtration reaction apparatus is a device used in chemical engineering experiments to achieve the filtration and reaction of substances. This apparatus typically comprises multiple filtration stages, each potentially using different filtration media or conditions, to allow different components in a mixture to be separated or reacted sequentially.

[0003] Existing filtration devices are typically designed as simple single-stage filtration systems, or improve filtration efficiency by adding multiple layers of filters. However, these solutions often face the challenge of balancing filtration efficiency and precision, making it difficult to efficiently handle diverse impurity concentrations and sizes simultaneously. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a multi-stage filtration reaction device for chemical engineering experiments.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A multi-stage filtration reaction apparatus for chemical engineering experiments, comprising:

[0007] reaction vessel;

[0008] The filter screen has a gradually decreasing pore size along the diameter of the reaction vessel. The filter screen is horizontally installed inside the reaction vessel, dividing the cavity inside the vessel into a filtration zone and a reaction zone.

[0009] An elastic circulation pipe is provided in the filtration zone and extends to the top of the reaction tank. The outlet end of the circulation pipe is initially positioned vertically at the top of the filter screen.

[0010] The driving component is located on the inner wall of the filtration zone, and its output end is connected to the bottom outer wall of the circulation pipe. When the driving component is started intermittently, it drives the circulation pipe to form a gradually inclined stretching state so that the pipe diameter and the filter screen aperture gradually shrink in the same direction.

[0011] When the filter screen circulates and filters the chemical liquid in the reaction tank, the circulation pipe is moved according to the state of impurities in the circulating chemical liquid, so that the water spray direction at the outlet end is positioned to the target pore size area of ​​the filter screen, and at the same time, the pipe diameter inside the circulation pipe forms a fluid channel that matches the target pore size area of ​​the filter screen.

[0012] Preferably, the gap between the outlet of the circulation pipe and the top of the filter screen allows the sprayed chemical liquid to form a horizontal radial flow in the target filtration area on the filter screen surface.

[0013] Preferably, when the circulation pipe is in a gradually inclined state, the direction of the jet water flow at its outlet end forms a dynamically adjustable impact angle with the surface of the filter screen, so that the direction of the water flow at the outlet end of the circulation pipe is aligned with the geometric center of the target filtration area of ​​the filter screen.

[0014] Preferably, the wall thickness of the circulation pipe is symmetrically gradually thinned along the axial center, so that the water flow direction at the outlet of the circulation pipe is axial.

[0015] Preferably, the horizontal radial flow range of the chemical liquid at the top of the filter screen dynamically matches the geometric features of the target pore size region of the filter screen.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] This invention employs a vertical design with maximized pipe diameter for filtering large particles in chemical liquids, and a tilted design with gradually decreasing pipe diameter for filtering small particles after circulating filtration. The overall filtration system effectively optimizes the liquid flow path, which not only improves the filtration efficiency of large particles, but also ensures that small particles can be accurately filtered through the small pore area. This results in improved filtration effect, enhanced system stability, reduced energy consumption, and extended equipment life. Attached Figure Description

[0018] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0019] Figure 1 This is a cross-sectional view of the present invention;

[0020] Figure 2 For the present utility model Figure 1 Another schematic diagram of the state structure;

[0021] Figure 3 This is a cross-sectional view of the circulation pipe of this utility model.

[0022] The diagram is labeled as follows: 1. Reaction vessel; 2. Filter screen; 3. Circulation pipe; 4. Drive unit. Detailed Implementation

[0023] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0024] Example

[0025] like Figures 1-3 As shown, a multi-stage filtration reaction apparatus for chemical engineering experiments includes:

[0026] Reaction vessel 1;

[0027] The filter screen 2 has a gradually decreasing pore size along the diameter of the reaction vessel 1. The filter screen 2 is horizontally installed inside the reaction vessel 1, dividing the cavity inside the vessel into a filtration zone and a reaction zone.

[0028] The flexible circulation pipe 3 is located in the filtration zone and extends to the top of the reaction tank 1. The water outlet of the circulation pipe 3 is initially positioned vertically at the top of the filter screen 2.

[0029] The drive unit 4 is located on the inner wall of the filter zone, and its output end is connected to the bottom outer wall of the circulation pipe 3. When the drive unit 4 is started intermittently, it drives the circulation pipe 3 to form a gradually inclined stretching state so that the pipe diameter and the pore diameter of the filter screen 2 gradually shrink in the same direction.

[0030] The driving component 4 includes an electric slide rod fixed inside the reaction vessel 1, and a slider slidably connected to the outer wall of the outer wall of the circulation pipe 3 is connected to the bottom outer wall of the circulation pipe 3, so that the water outlet of the circulation pipe 3 moves intermittently above the filter screen 2 and positions its water outlet to the target aperture area. The driving component 4 can also use a device or transmission component such as gear and rack meshing that can make the water outlet of the circulation pipe 3 move intermittently above the filter screen 2.

[0031] When the filter screen 2 circulates and filters the chemical liquid in the reaction tank 1, the circulation pipe 3 is moved according to the state of impurities in the chemical liquid to position the water spray direction at the outlet end to the target pore size area of ​​the filter screen 2. At the same time, the inner diameter of the circulation pipe 3 forms a fluid channel that matches the target pore size area of ​​the filter screen 2.

[0032] Chemical liquids are mixed and reacted inside reaction tank 1. An external water pump intermittently draws the chemical liquid from the tank. The inlet of circulation pipe 3 is fixedly connected to the outlet of the water pump. The chemical liquid is discharged through the outlet of circulation pipe 3 to the top of filter screen 2 for filtration. The intermittent operation of drive component 4 is adjusted according to the intermittent suction of the water pump. After one cycle of suction of the chemical liquid in reaction tank 1, a pause is made for a period of time. The state of impurities in the filtered chemical liquid changes. Then, the water pump is restarted, and drive component 4 is activated simultaneously. Drive component 4 moves the bottom of circulation pipe 3 along the direction of the gradually narrowing aperture, thereby tilting and stretching circulation pipe 3 as a whole. The movement-tension dual linkage achieves spatial positioning. The driving component 4 pushes the bottom end of the circulation pipe 3 to move, so that the water outlet is precisely aligned with the target pore size area (gradually from large pore area to small pore area), realizing geometric deformation. The movement simultaneously triggers axial tension and radial contraction of the circulation pipe 3, and the pipe diameter and the pore size of the filter screen 2 form a dynamic proportional relationship (such as the small pore area corresponding to the thin pipe diameter). The traditional separate positioning selection and flow regulation functions are integrated into a single mechanical action, realizing intelligent response of movement and adjustment. By utilizing the physical structure change (pipe diameter contraction), the flow rate optimization that matches the selected filter pore size is automatically achieved, which helps to maintain a stable filtration pressure difference, reduce the risk of clogging, and improve the staged filtration effect.

[0033] The intermittent working mode allows the external water pump to complete the chemical liquid circulation and primary filtration during the operation phase. During the pause phase, impurities settle / react, causing changes in the liquid state. During the restart phase, the drive unit 4 synchronously adjusts the position of the circulation pipe 3 to achieve secondary filtration. By replacing the sensor feedback system with mechanical timing control, the structure is simplified while the filtration accuracy increases with the number of cycles, and energy consumption is reduced.

[0034] like Figure 2 As shown, the gap between the outlet of the circulation pipe 3 and the top of the filter screen 2 allows the sprayed chemical liquid to form a horizontal radial flow on the target filtration area of ​​the filter screen 2 surface. The horizontal radial flow range of the chemical liquid on the top of the filter screen 2 dynamically matches the geometric characteristics of the target pore size area of ​​the filter screen 2. The liquid sprayed from the outlet does not directly impact the surface of the target filtration area of ​​the filter screen 2 vertically, but expands through the gap. The liquid diffuses outward from the center of the target filtration area along the surface of the target filtration area of ​​the filter screen 2, similar to the radial flow path of water, making the fluid evenly distributed across the entire target filtration area surface and helping to avoid the liquid concentrating in one area. This uniform distribution ensures that all areas of the target filtration area participate in the filtration process, improving the overall filtration efficiency and reducing the problem of excessive load in some areas.

[0035] like Figure 2As shown, when the circulation pipe 3 is in a gradually inclined state, the direction of the jet water flow at its outlet forms a dynamically adjustable impact angle with the surface of the filter screen 2, aligning the water flow direction at the outlet of the circulation pipe 3 with the geometric center of the target filtration zone of the filter screen 2. The shrinkage of the diameter of the circulation pipe 3 automatically reduces the flow cross-sectional area, increasing the local flow velocity according to Bernoulli's principle (the flow velocity in the small pore area can reach 1.5-2 times that in the large pore area). Through dynamic adjustment of the impact angle (55°-75°), the inclined permeation flow in the small pore area is achieved to improve the micropore throughput, and the inclined flushing flow in the small pore area removes small particles. This design improves filtration efficiency and reduces clogging rate.

[0036] like Figure 3 As shown, the wall thickness of the circulation pipe 3 is symmetrically gradually thinned along the axial center, so that the water flow direction at the outlet end of the circulation pipe 3 is axially ejected, ensuring the stability of the inlet end of the circulation pipe 3 and the stability of the jet at the outlet end. This allows the water flow direction of the circulation pipe 3 to be accurately aligned with the target filtration area of ​​the filter screen 2, thereby improving the filtration effect.

[0037] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A multi-stage filtration reaction apparatus for chemical engineering experiments, characterized in that, include: Reaction vessel (1); The filter screen (2) has a gradually decreasing pore size along the diameter direction of the reaction vessel (1). The filter screen (2) is horizontally installed inside the reaction vessel (1) to divide the cavity inside the vessel into a filtration zone and a reaction zone. The flexible circulation pipe (3) is located in the filtration zone and extends to the top of the reaction tank (1). The outlet end of the circulation pipe (3) is vertically located at the top of the filter screen (2) in the initial state. The drive unit (4) is located on the inner wall of the filter zone, and its output end is connected to the bottom outer wall of the circulation pipe (3). When the drive unit (4) is started intermittently, it drives the circulation pipe (3) to form a gradually inclined stretching state so that the pipe diameter and the filter screen (2) pore diameter gradually shrink in the same direction. When the filter (2) circulates and filters the chemical liquid in the reaction tank (1), the circulation pipe (3) is moved according to the state of impurities in the chemical liquid circulation and filtration, so that the water spray direction at the outlet end is positioned to the target aperture area of ​​the filter (2), and at the same time, the inner diameter of the circulation pipe (3) forms a fluid channel that is compatible with the target aperture area of ​​the filter (2).

2. The multi-stage filtration reaction apparatus for chemical engineering experiments according to claim 1, characterized in that: The gap between the outlet of the circulation pipe (3) and the top of the filter screen (2) allows the sprayed chemical liquid to form a horizontal radial flow in the target filtration area on the surface of the filter screen (2).

3. The multi-stage filtration reaction apparatus for chemical engineering experiments according to claim 2, characterized in that: When the circulation pipe (3) is in a gradually inclined state, the direction of the jet water flow at its outlet end forms a dynamically adjustable impact angle with the surface of the filter screen (2), so that the water flow direction at the outlet end of the circulation pipe (3) is aligned with the geometric center of the target filtration area of ​​the filter screen (2).

4. The multi-stage filtration reaction apparatus for chemical engineering experiments according to claim 3, characterized in that: The wall thickness of the circulation pipe (3) is symmetrically thinned along the axial center, so that the water flow direction at the outlet of the circulation pipe (3) is axial.

5. A multi-stage filtration reaction apparatus for chemical engineering experiments according to claim 4, characterized in that: The horizontal radial flow range of the chemical liquid at the top of the filter (2) forms a dynamic spatial match with the geometric features of the target pore size region of the filter (2).

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