Dual chamber in-line dilution pretreatment device

Abstract

The utility model relates to double -chamber series connection type dilution pretreatment device, aims at solving current double -chamber series connection structure, and the mixing assembly of connecting pipeline is static design more, when processing high viscosity sample or the scene of flow fluctuation is bigger, easy to appear " short circuit flow " or " dead volume " phenomenon, lead to dilution evenness decline, influence the quality of the technical problem of pretreatment, including: bottom plate, bottom plate top two sides are equipped with first pretreatment cavity and second pretreatment cavity respectively, first pretreatment cavity height is higher than second pretreatment cavity, and both are connected in series through intercommunication mechanism, the utility model can adjust mixing intensity in real time according to sample viscosity and flow fluctuation through drive assembly drive mixing assembly active rotation, avoid static spiral piece or baffle appearing " short circuit flow " when flow sudden change, namely liquid is not mixed directly through fully, ensure that sample and diluent form global turbulence in connecting pipe, eliminate " dead volume ".

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, specifically a dual-chamber series dilution pretreatment device. Background Technology

[0002] In fields such as environmental monitoring, chemical analysis, and biological sample preparation, dual-chamber tandem dilution pretreatment devices are widely used for the gradient dilution of high-concentration samples. Their core function is to achieve precise control of the target solution concentration through the preliminary dilution in the first chamber and the fine mixing in the second chamber.

[0003] In existing dual-chamber series structures, the mixing components connecting the pipes are mostly statically designed, such as fixed spiral vanes or porous baffles. These structures can only form a stable mixing flow pattern at a specific flow rate. When processing high-viscosity samples or in scenarios with large flow rate fluctuations, "short-circuit flow" or "dead volume" phenomena are prone to occur, leading to a decrease in dilution uniformity and affecting the quality of pretreatment. Therefore, new technical solutions are needed to address this issue. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the existing technology, adapt to practical needs, and provide a dual-chamber series dilution pretreatment device to solve the technical problem that in the current dual-chamber series structure, the mixing components of the connecting pipes are mostly statically designed, which easily leads to "short-circuit flow" or "dead volume" phenomena when processing high-viscosity samples or scenarios with large flow fluctuations, resulting in a decrease in dilution uniformity and affecting the quality of pretreatment.

[0005] To achieve the objective of this utility model, the technical solution adopted is as follows: A dual-chamber series dilution pretreatment device is designed, comprising:

[0006] The base plate has a first pretreatment chamber and a second pretreatment chamber respectively on the top two sides. The first pretreatment chamber is higher than the second pretreatment chamber. The two are connected in series by a connecting mechanism and are used for graded dilution pretreatment of high-concentration samples to provide a concentration-appropriate and uniformly mixed test solution.

[0007] The connecting mechanism includes:

[0008] A connecting tube, wherein a mixing component is provided in the internal cavity of the connecting tube to improve the mixing effect of the sample and the diluent;

[0009] The drive component is located at one end of the connecting pipe, and its power output end works with the mixing component to drive its rotation, thereby improving the uniformity of dilution.

[0010] A coupling component is located between the drive component and the hybrid component to transmit power.

[0011] Preferably, the hybrid component includes:

[0012] A rotating shaft is rotatably connected to the end of the connecting tube away from the drive assembly via a sealed bearing.

[0013] The spiral blade is fixedly connected to the outside of the rotating shaft, and the outside of the spiral blade moves against the inner wall of the connecting pipe.

[0014] Preferably, the driving component includes a driving motor, which is disposed at one end of the mounting plate at the bottom of the first pretreatment cavity, and the coupling component is fixedly connected to the driving end of the driving motor.

[0015] Preferably, the coupling component includes:

[0016] An electromagnet disc is fixedly connected to the drive end of a drive motor and movably fits against the end face of a connecting pipe.

[0017] The disk is fixedly connected to the end of the rotating shaft away from the sealing shaft, and the end of the disk away from the rotating shaft is movably attached to the inner end face of the connecting tube. The magnetic poles of the disk and the electromagnet disk are opposite at the opposite end.

[0018] Preferably, a fixing plate is fixedly connected to the end of the drive motor away from the drive end, and a fixing bolt passes through the fixing plate. The fixing bolt is threadedly connected to the surface of the mounting plate at the bottom of the first pretreatment cavity.

[0019] Preferably, an electric slip ring is fitted on the outer side of the drive shaft of the drive motor. The stator of the electric slip ring is fixed to the housing of the drive motor by bolts, and the rotor of the electric slip ring is fixed to the drive shaft of the drive motor by bolts. The stator is electrically connected to the power supply through a current regulator via a wire, and the rotor is electrically connected to an electromagnet disk via a wire.

[0020] Preferably, the spiral blade is integrally formed from stainless steel, and the surface of the spiral blade is provided with micro-grooves.

[0021] Preferably, the first pretreatment cavity is connected to a first conduit at one end near the connecting pipe, and the other end of the first conduit is connected to the top of the connecting pipe; the second pretreatment cavity is connected to a second conduit at one end near the connecting sleeve, and the other end of the second conduit is connected to the bottom of the connecting pipe; the first pretreatment cavity is connected to an inlet pipe at one end away from the first conduit; and the second pretreatment cavity is connected to an outlet pipe at one end away from the second conduit.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] 1. Mixing and Adaptation: The mixing component is driven to rotate actively by the drive component, which can adjust the mixing intensity in real time according to the sample viscosity and flow fluctuations. This avoids the "short-circuit flow" that occurs when the static spiral blades or baffles change the flow rate suddenly, i.e. the liquid does not flow through directly without being fully mixed. This ensures that the sample and diluent form full-area turbulence in the connecting tube and eliminates "dead volume".

[0024] 2. Staged dilution: The series layout of the first pretreatment chamber (high position) and the second pretreatment chamber (low position) realizes the step-by-step treatment of "coarse dilution-fine dilution". Compared with single-chamber one-time dilution, it is easier to control the concentration gradient. With the dynamic mixing component, the concentration deviation of the test liquid is reduced compared with the traditional structure, which is especially suitable for the precise dilution of high concentration samples.

[0025] 3. Structural Synergy: The coupling components ensure stable power transmission, enabling the mixing components to work continuously and efficiently within the connecting pipe. This overcomes the passive limitation of static mixing relying on the liquid's own flow rate, maintaining sufficient mixing intensity even under low flow conditions and ensuring consistent dilution uniformity across different throughput levels. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the connection structure between the connecting pipe, the driving component, and the coupling component of this utility model;

[0028] Figure 3 This is a cross-sectional view of the connection between the connecting pipe and the spiral blade of this utility model.

[0029] In the diagram: 1. Base; 11. First pretreatment chamber; 12. Inlet pipe; 13. Second pretreatment chamber; 14. Outlet pipe; 2. Connecting pipe; 21. First conduit; 22. Second conduit; 3. Fixing plate; 31. Fixing bolt; 32. Drive motor; 4. Electromagnetic disc; 41. Slip ring; 42. Disk; 5. Shaft; 51. Spiral blade; 52. Miniature tank. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0031] Example 1: Dual-chamber series dilution pretreatment device, see [link / reference] Figures 1 to 3 ,include:

[0032] The base plate 1 has a first pretreatment chamber 11 and a second pretreatment chamber 13 respectively on the top two sides. The first pretreatment chamber 11 is higher than the second pretreatment chamber 13. The two are connected in series through a communication mechanism and are used for graded dilution pretreatment of high-concentration samples to provide a test solution with appropriate concentration and uniform mixing.

[0033] The connecting mechanism includes:

[0034] Connecting tube 2, wherein a mixing component is provided in the internal cavity of the connecting tube 2 to improve the mixing effect of the sample and the diluent;

[0035] The drive component is located at one end of the connecting pipe 2, and its power output end cooperates with the mixing component to drive its rotation, thereby improving the uniformity of dilution.

[0036] A coupling component is located between the drive component and the hybrid component to transmit power.

[0037] This device, through its connecting mechanism, driving component, and coupling component, achieves the following during use:

[0038] Mixing adaptation: The mixing component is driven to rotate actively by the drive component, and the mixing intensity can be adjusted in real time according to the sample viscosity and flow fluctuations. This avoids the "short-circuit flow" that occurs when the static spiral blade or baffle changes the flow rate suddenly, i.e. the liquid does not flow through directly without being fully mixed. It ensures that the sample and diluent form full-area turbulence in the connecting tube 2 and eliminates "dead volume" (local areas that do not participate in mixing).

[0039] Stepwise dilution: The series arrangement of the first pretreatment chamber 11 (high position) and the second pretreatment chamber 13 (low position) enables a stepwise process of "coarse dilution-fine dilution". Compared with single-chamber one-time dilution, it is easier to control the concentration gradient. Combined with the dynamic mixing component, the concentration deviation of the test liquid is reduced compared with the traditional structure, which is especially suitable for the precise dilution of high-concentration samples.

[0040] Structural synergy: The coupling components ensure stable power transmission, enabling the mixing components to work continuously and efficiently within the connecting pipe 2. This overcomes the passive limitation of static mixing relying on the liquid's own flow rate, maintaining sufficient mixing intensity even under low flow conditions and ensuring consistent dilution uniformity under different processing volumes.

[0041] For details, see Figure 3The mixing assembly includes: a rotating shaft 5, which is rotatably connected to the inner end of the connecting pipe 2 away from the drive assembly via a sealed bearing; and a spiral blade 51, which is fixedly connected to the outside of the rotating shaft 5, and the outside of the spiral blade 51 moves against the inner wall of the connecting pipe 2. When the spiral blade 51 rotates with the rotating shaft 5, it can exert a dual action of axial pushing and radial shearing on the liquid in the connecting pipe 2. The movement of the outer side of the blade against the pipe wall eliminates the gap between the pipe wall and the blade, forcing all the liquid to flow through the blade stirring area, completely eliminating "dead volume". Since the mechanical shearing force of the rotating blade can break the agglomeration structure of high viscosity samples (such as colloidal particle clusters), the diluent can penetrate evenly, improving the mixing efficiency compared to the static structure. It avoids local concentration unevenness caused by the poor fluidity of high viscosity liquids. Moreover, the blade rotation speed can be adjusted by the drive assembly (in conjunction with flow rate changes). At high flow rates, the rotation speed can be increased to enhance turbulence, and at low flow rates, the rotation speed can be decreased to avoid excessive shearing, balancing the mixing effect and energy consumption, and adapting to the dilution requirements under complex working conditions.

[0042] Further, see Figure 2 The driving component includes a driving motor 32, which is disposed at one end of the mounting plate at the bottom of the first pretreatment chamber 11. The coupling component is fixedly connected to the driving end of the driving motor 32. The driving motor 32 provides continuous and adjustable power to the mixing component, and the rotation speed can be adjusted in real time according to the sample characteristics (such as viscosity and concentration), thus solving the limitation that the static mixing structure cannot adapt to multiple types of samples.

[0043] It is worth noting that, see Figure 3 The coupling component includes:

[0044] Electromagnetic disc 4 is fixedly connected to the drive end of drive motor 32 and movably attached to the end face of connecting pipe 2.

[0045] The disk 42 is fixedly connected to the end of the rotating shaft 5 away from the sealing shaft, and the end of the disk 42 away from the rotating shaft 5 is movably attached to the inner end face of the connecting tube 2. The magnetic poles of the disk 42 and the electromagnet disk 4 are opposite. Through the non-contact coupling (opposite poles attract to transmit torque) between the electromagnet disk 4 and the disk 42, the risk of liquid leakage caused by opening a power shaft perforation in the connecting tube 2 is avoided. Compared with the mechanical shaft sealing structure, the reliability is improved, and the non-contact structure allows the drive component and the connecting tube 2 to be disassembled and installed independently. When replacing the mixing component or repairing the motor, it is not necessary to disassemble the entire connecting mechanism, which is more convenient.

[0046] It is worth noting that, see Figure 1The end of the drive motor 32 away from the drive end is fixedly connected to a fixing plate 3. A fixing bolt 31 passes through the fixing plate 3. The fixing bolt 31 is threadedly connected to the surface of the mounting plate at the bottom of the first pretreatment cavity 11. The fixing bolt 31 and the fixing plate 3 are used to firmly lock the drive motor 32 on the mounting plate, eliminating high-frequency vibration during motor operation, avoiding misalignment of the coupling component due to motor displacement, and the detachable fixing bolt 31 allows for fine adjustment of the motor position, ensuring precise contact between the electromagnet disk 4 and the disk disk 42, and ensuring the magnetic force transmission efficiency of the coupling component.

[0047] It is worth mentioning that, see Figure 3 An electric slip ring 41 is fitted on the outer side of the drive shaft of the drive motor 32. The stator of the electric slip ring 41 is fixed to the housing of the drive motor 32 by bolts, and the rotor of the electric slip ring 41 is fixed to the drive shaft of the drive motor 32 by bolts. The stator is electrically connected to the power supply via a current regulator through a wire, and the rotor is electrically connected to the electromagnet disk 4 via a wire. The stator and rotor separation structure of the electric slip ring 41 allows the drive shaft to continuously supply power to the electromagnet disk 4 when it rotates, avoiding wire wear or breakage caused by wires winding around the shaft, ensuring the magnetic stability of the electromagnet disk 4, and solving the risk of power interruption when the traditional wires are directly connected to the rotating shaft 5. Moreover, the current regulator can adjust the current intensity of the electromagnet disk 4 in real time through the stable conductive channel between the stator and the rotor, thereby changing the coupling magnetic force to adapt to the mixing requirements of samples with different viscosities and ensuring the coupling stability of the coupling components. The electric slip ring 41 and the current regulator are well-known technologies and will not be described in detail here.

[0048] It is worth mentioning that, see Figure 3 The spiral blade 51 is integrally formed from stainless steel, and the surface of the spiral blade 51 is provided with micro-grooves 52. The stainless steel spiral blade 51 can withstand the corrosion of acidic and alkaline samples, avoiding the structural damage caused by corrosion of traditional plastic blades, ensuring the long-term use of the mixing component in complex sample environments, reducing dilution interruptions caused by component damage, and the micro-grooves 52 form multi-directional shear on the liquid when the blade rotates, enhancing the turbulence of high viscosity samples, avoiding the problem of insufficient dilution of sample agglomerates, and improving the mixing uniformity.

[0049] It is worth mentioning that, see Figure 1The first pretreatment chamber 11 is connected to a first conduit 21 at one end near the connecting pipe 2, and the other end of the first conduit 21 is connected to the top of the connecting pipe 2. The second pretreatment chamber 13 is connected to a second conduit 22 at one end near the connecting sleeve, and the other end of the second conduit 22 is connected to the bottom of the connecting pipe 2. The end of the first pretreatment chamber 11 away from the first conduit 21 is connected to a water inlet pipe 12, and the end of the second pretreatment chamber 13 away from the second conduit 22 is connected to a water outlet pipe 14. The first conduit 21 connects to the first pretreatment chamber 13. A pretreatment chamber 11 (high position) is connected to the top of the connecting pipe 2, and a second conduit 22 is connected to the bottom of the connecting pipe 2 and the second pretreatment chamber 13 (low position). Gravity is used to form a unidirectional flow trend to avoid the mixed liquid from flowing back into the first chamber due to pressure fluctuations, thus avoiding concentration interference caused by backflow and ensuring a stable concentration gradient for staged dilution. The liquid enters from the first chamber through the top of the connecting pipe 2 and flows out through the bottom, passing through the entire length of the spiral blade 51, forcing the liquid to fully participate in the rotational mixing, eliminating "short-circuit flow", improving the coverage of the mixing path, and ensuring uniform dilution.

[0050] In addition, all components designed in this utility model are general standard parts or components known to those skilled in the art. Their structure and principle can be learned by those skilled in the art through technical manuals or conventional experimental methods. Those skilled in the art can fully implement them, so there is no need to elaborate. The content protected by this utility model does not involve improvements to the internal structure and method.

[0051] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. A dual-chamber series dilution pretreatment device, characterized in that, include: The base plate (1) has a first pretreatment chamber (11) and a second pretreatment chamber (13) on its top two sides respectively. The first pretreatment chamber (11) is higher than the second pretreatment chamber (13). The two are connected in series through a communication mechanism to perform graded dilution pretreatment of high-concentration samples in order to provide a solution with appropriate concentration and uniform mixing. The connecting mechanism includes: Connecting tube (2), the cavity inside the connecting tube (2) is provided with a mixing component to improve the mixing effect of the sample and the diluent; The driving component is located at one end of the connecting pipe (2), and its power output end is matched with the mixing component to drive its rotation, thereby improving the uniformity of dilution. A coupling component is located between the drive component and the hybrid component to transmit power.

2. The dual-chamber series dilution pretreatment device as described in claim 1, characterized in that, The hybrid component includes: The rotating shaft (5) is rotatably connected to the end of the inner cavity of the connecting pipe (2) away from the drive assembly via a sealed bearing; The spiral blade (51) is fixedly connected to the outside of the rotating shaft (5), and the outside of the spiral blade (51) moves against the inner wall of the connecting pipe (2).

3. The dual-chamber series dilution pretreatment device as described in claim 1, characterized in that, The driving component includes a driving motor (32), which is disposed at one end of the bottom mounting plate of the first pretreatment cavity (11), and the coupling component is fixedly connected to the driving end of the driving motor (32).

4. The dual-chamber series dilution pretreatment device as described in claim 3, characterized in that, The coupling component includes: Electromagnetic disc (4), which is fixedly connected to the drive end of the drive motor (32) and movably attached to the end face of the connecting pipe (2); The disk (42) is fixedly connected to the end of the rotating shaft (5) away from the sealing shaft, and the end of the disk (42) away from the rotating shaft (5) is movably attached to the inner end face of the connecting tube (2). The magnetic poles of the disk (42) and the electromagnet disk (4) are opposite.

5. The dual-chamber series dilution pretreatment device as described in claim 3, characterized in that, The drive motor (32) is fixedly connected to a fixing plate (3) at one end away from the drive end. A fixing bolt (31) passes through the fixing plate (3). The fixing bolt (31) is threadedly connected to the surface of the mounting plate at the bottom of the first pretreatment cavity (11).

6. The dual-chamber series dilution pretreatment device as described in claim 3, characterized in that, An electric slip ring (41) is fitted on the outside of the drive shaft of the drive motor (32). The stator of the electric slip ring (41) is fixed to the housing of the drive motor (32) by bolts. The rotor of the electric slip ring (41) is fixed to the drive shaft of the drive motor (32) by bolts. The stator is electrically connected to the power supply through a current regulator via a wire. The rotor is electrically connected to the electromagnet disk (4) via a wire.

7. The dual-chamber series dilution pretreatment device as described in claim 2, characterized in that, The spiral blade (51) is integrally formed from stainless steel, and the surface of the spiral blade (51) is provided with micro-grooves (52).

8. The dual-chamber series dilution pretreatment device as described in claim 1, characterized in that, The first pretreatment chamber (11) is connected to a first conduit (21) at one end near the connecting pipe (2), and the other end of the first conduit (21) is connected to the top of the connecting pipe (2). The second pretreatment chamber (13) is connected to a second conduit (22) at one end near the connecting sleeve, and the other end of the second conduit (22) is connected to the bottom of the connecting pipe (2). The first pretreatment chamber (11) is connected to an inlet pipe (12) at one end away from the first conduit (21), and the second pretreatment chamber (13) is connected to an outlet pipe (14) at one end away from the second conduit (22).

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