Double-stage pigment dispersibility detection equipment
By using a two-stage structure pigment dispersibility testing device, which combines twin-screw and single-screw designs and multi-stage filtration, the problems of material agglomeration and inaccurate feeding in traditional equipment are solved, achieving higher dispersion effect and testing accuracy, while reducing energy consumption and maintenance costs.
Patent Information
- Application Number
- CN202422628269.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-30
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-10-30
AI Technical Summary
Traditional pigment dispersibility testing equipment is prone to agglomeration when processing fine particles or high-viscosity materials, resulting in inaccurate feeding, unreliable test results, and difficult equipment cleaning.
The pigment dispersibility testing equipment adopts a two-stage structure, including a twin-screw, a single-screw, a metering pump, and a multi-stage filtration system. The twin-screw generates shear force through meshing and rotation to perform initial mixing and melting, while the single-screw further homogenizes the material. The metering pump ensures accurate feeding, and the multi-stage filtration structure improves testing accuracy.
It improves the dispersion effect and detection accuracy of materials, reduces agglomeration and material residue, ensures the accuracy of material supply and the reliability of equipment, and reduces energy consumption and maintenance costs.
Smart Images
Figure CN223526204U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to pigment dispersibility detection technical field, specifically, relate to a double -stage formula pigment dispersibility detection equipment. BACKGROUND
[0002] Pigment dispersibility detection equipment is a kind of equipment specially used for detecting the dispersing performance of colorant or powder in molten state.The equipment is usually composed of sample preparation unit, filtering device and detection instrument etc., realizes the mixing, melting and homogenization of material.It contains following several key components: sample preparation unit: this part includes the container for mixing pigment and solvent or matrix, and the tool for dispersing pigment into medium, such as stirrer or ultrasonic processor.Filtering device: in some cases, a filtering step is needed to remove undispersed particles or oversized particles to ensure that only suitable size pigment particles enter the next step detection.Detection instrument: this is the core part of the equipment, used for analyzing pigment dispersion condition.It includes optical system (such as microscope), laser scattering instrument, spectrometer etc., used for measuring the optical properties of dispersion, such as transmittance, reflectance etc.
[0003] Double-screw extruder is mainly used for the preliminary mixing and melting of material, and single-screw extruder is used for further homogenizing material to make it reach higher dispersion degree.Finally, through metering pump quantitative feeding, and through measuring net detection dispersion performance.
[0004] Although the traditional pigment dispersibility detection equipment meets the needs of industrial production to some extent, but still has some obvious disadvantages, specific in the following aspects: traditional pigment dispersibility detection equipment often cannot fully disperse colorant or powder, especially when processing small particles or high viscosity material, easy to appear agglomeration phenomenon, affect the quality of final product.Due to unreasonable screw design, material is easy to accumulate at the end of screw or other connections in the extrusion process, cause material waste, also increase the cleaning difficulty.Traditional metering pump cannot accurately control the feeding amount, especially in the case of needing accurate proportioning, inaccurate feeding can lead to unstable product quality.Traditional measuring net design is simple, only has one-stage filtering, cannot accurately reflect the dispersion performance of material, especially when processing complex material, detection result is not reliable enough. UTILITY MODEL CONTENTS
[0005] Therefore, the utility model provides a double -stage formula pigment dispersibility detection equipment, solved the disadvantage that traditional pigment dispersibility detection equipment inaccurate feeding can lead to unstable product quality, especially when processing complex material, detection result is not reliable enough.
[0006] The utility model is realized as follows:
[0007] The utility model provides a kind of double-step pigment dispersibility detection equipment, including double screw, single screw, metering pump and measuring net, the double screw and the single screw are sequentially arranged to form double-step structure, the single screw is connected the metering pump, the metering pump is connected the measuring net afterwards, the double screw includes first screw rod and second screw rod, the first screw rod and the second screw rod are parallelly arranged and mutually meshed, the single screw is located after the discharge end of the double screw, the axis of the single screw and the axis of the double screw are in the same plane, the metering pump is directly connected with the discharge end of the single screw, the measuring net is equipped with multistage filtering structure.
[0008] The front end of the measuring net is provided with a pressure sensor for detecting the pressure change of the material after passing through the measuring net.
[0009] The double screw is mainly responsible for the preliminary mixing and melting of the material, and through the rotating motion of the two mutually meshed screws, strong shear force is generated to uniformly mix and melt the material. The single screw is mainly used for further homogenizing the material, and through its stable rotating motion, it ensures that the material reaches a uniform state before entering the metering pump, reducing the agglomeration phenomenon.
[0010] The double-step structure ensures that the material is further homogenized after preliminary mixing and melting, improving the dispersion effect. The metering pump ensures the accuracy of the feed, and the measuring net can accurately detect the dispersion performance, improving the reliability and precision of the overall equipment.
[0011] Based on the above technical scheme, the double-step pigment dispersibility detection equipment of the utility model can also be improved as follows:
[0012] Among them, the screw groove depth of the first screw rod and the second screw rod gradually decreases from the feeding end to the discharge end.
[0013] The beneficial effects of the above improvement scheme are: the gradual reduction of screw groove depth enhances the shear force of the material, ensuring the sufficient mixing and melting of the material. It improves the flowability of the material between the screws and reduces the material residue.
[0014] Further, the pitch of the single screw gradually decreases near the discharge end.
[0015] The beneficial effects of the above improvement scheme are: the gradual reduction of pitch improves the homogenization effect of the material, ensuring the uniformity of the material before entering the metering pump. It reduces the residence time of the material in the single screw, improving the production efficiency.
[0016] Further, the metering pump is provided with a piston, and the stroke length of the piston is adjustable.
[0017] The beneficial effect of the improved scheme is that the stroke length of the piston is adjustable, improving the flexibility and precision of the feeding.
[0018] Further, the pump cavity of the metering pump is designed in a wave shape.
[0019] The beneficial effect of the improved scheme is that the wave shape increases the contact area of the material with the inner wall of the pump cavity, improving the delivery precision. Reducing the turbulence of the material in the pump cavity improves the stability of the delivery.
[0020] Further, the pore size of each stage of the measuring screen decreases from the material entering direction to the flowing direction.
[0021] The beneficial effect of the improved scheme is that the multi-stage filtering structure ensures the step-by-step refinement of the material, improving the detection precision of the dispersion performance. The decreasing pore size design effectively removes large particles in the material, improving the dispersion quality.
[0022] Further, a transition section is provided between the double screw and the single screw, and the inner diameter of the transition section is greater than the outer diameter of the single screw.
[0023] The beneficial effect of the improved scheme is that the transition section design reduces the resistance during the material flow, improving the flowability of the material. Ensures smooth transition of the material from the double screw to the single screw.
[0024] Further, the multiple layers of the measuring screen are connected through a fixed frame, and each layer of filter screen is fixed on the fixed frame through fasteners.
[0025] Further, the fastener is specifically a screw or a welding method.
[0026] Further, a sealing ring is provided at the connection between the single screw and the double screw.
[0027] The beneficial effect of the improved scheme is that the sealing ring design ensures the sealing of the connection, reducing the material leakage. Improving the reliability and service life of the device.
[0028] Compared with the prior art, the beneficial effect of the double-stage pigment dispersion detection device provided by the utility model is:
[0029] Improve the dispersion effect:
[0030] By adopting the double screw design with gradually changing screw groove depth, the shear force of the material between the screws is improved, ensuring the sufficient mixing and melting of the material.
[0031] The pitch of the single screw gradually decreases near the discharge end, further enhancing the homogenization effect of the material and reducing the agglomeration phenomenon;
[0032] Reducing material residues:
[0033] The single screw is designed with a tapered structure at the end, reducing the accumulation of material at the end of the screw and improving the utilization rate of the material;
[0034] The transition section between the double screw and the single screw is designed reasonably, reducing the resistance in the material flow process and ensuring smooth transition of the material;
[0035] Improving the feeding accuracy:
[0036] The metering pump is equipped with a piston, and the stroke length of the piston is adjustable, improving the flexibility and accuracy of the feeding and ensuring the stability of the feeding amount;
[0037] The pump cavity is designed with a wavy structure, increasing the contact area between the material and the inner wall of the pump cavity and improving the conveying accuracy;
[0038] Improving the detection accuracy:
[0039] The measuring screen is equipped with multiple levels of filter structure, and the aperture of each level of filter screen decreases from the material entering direction to the flowing direction, ensuring the step-by-step refinement of the material and improving the detection accuracy of the dispersion performance;
[0040] The front end of the measuring screen is equipped with a pressure sensor, which can monitor the pressure change in real time and provide quantitative indicators for the dispersion performance;
[0041] Reducing maintenance costs:
[0042] The design of the sealing ring ensures the sealing of the connection, reduces the leakage of the material, and prolongs the service life of the equipment;
[0043] The stainless steel material and sufficient thickness ensure the mechanical strength of the measuring screen, reducing the risk of wear and damage;
[0044] Reducing energy consumption:
[0045] The design of the transition section reduces the resistance in the material flow process and reduces the energy consumption of the equipment;
[0046] The wavy pump cavity structure reduces the turbulent flow of the material in the pump cavity and improves the conveying efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0047] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the description of the embodiments of the present application. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0048] Figure 1 It is a double-step pigment dispersibility detection equipment example diagram;
[0049] Figure 2 It is Figure 1 A part of the enlarged view in the middle;
[0050] Figure 3 It is a filter screen section view of a double-step pigment dispersibility detection equipment
[0051] In the drawings, the components represented by each reference numeral are listed as follows:
[0052] 10, double screw; 11, first screw; 12, second screw; 20, single screw; 21, transition section; 30, metering pump; 40, measuring screen. DETAILED DESCRIPTION
[0053] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical scheme in the embodiments of the present application.
[0054] As Figure 1 , Figure 2 , Figure 3 As shown in the first embodiment of the double-step pigment dispersibility detection equipment provided by the present application, in the embodiment, it comprises a double screw 10, a single screw 20, a metering pump 30 and a measuring screen 40, the double screw 10 and the single screw 20 are sequentially arranged to form a double-step structure, the single screw 20 is connected with the metering pump 30, the metering pump 30 is connected with the measuring screen 40, the double screw 10 comprises a first screw 11 and a second screw 12, the first screw 11 and the second screw 12 are arranged in parallel and meshed with each other, the single screw 20 is located after the discharge end of the double screw 10, the axis of the single screw 20 and the axis of the double screw 10 are in the same plane, the metering pump 30 is directly connected with the discharge end of the single screw 20, and the measuring screen 40 is provided with a multi-stage filtering structure.
[0055] The twin-screw and single-screw form a double-stage structure, with the twin-screw located at the initial material feeding end and the single-screw located at the material discharging end of the twin-screw, both smoothly connected through a transition section. The twin-screw includes a first screw and a second screw, both fixed on the rack through bearing seats. The first screw and the second screw are respectively fixed on both ends of the rack through bearing seats, and the bearing seats are provided with rolling bearings. The front end of the single-screw is fixed on one side of the rack through a bearing seat, and the rear end is fixed on the other side of the rack through another bearing seat. The material discharging end of the single-screw is directly connected with a metering pump, which is used to accurately control the supply amount of the material.
[0056] The material discharging end of the metering pump is connected with a meshing screen, which is used to detect the dispersion performance of the material after passing through. The metering pump is fixed on the rack, and the front end thereof is tightly connected with the material discharging end of the single-screw through a connecting flange.
[0057] The meshing screen is fixed on the material discharging end of the metering pump and connected with the metering pump through a connecting flange, so as to ensure that the material can be filtered by multiple stages when passing through the meshing screen.
[0058] Use steps:
[0059] The coloring agent or powder to be tested is added to the feeding port of the twin-screw.
[0060] The material is preliminarily mixed and melted in the twin-screw.
[0061] The material is further homogenized by being transferred from the twin-screw to the single-screw.
[0062] The material is quantitatively supplied by passing through the single-screw into the metering pump.
[0063] Finally, the material passes through the meshing screen to detect the dispersion performance.
[0064] In the above technical solution, the screw groove depth of the first screw 11 and the second screw 12 gradually decreases from the feeding end to the discharging end.
[0065] Specific structure of the first screw and the second screw:
[0066] Screw diameter:
[0067] The diameters of the twin-screws are usually the same to ensure uniform meshing between the screws. The selection of the screw diameter depends on the material properties and the required production capacity.
[0068] Screw length:
[0069] The screw length should be long enough to ensure that the material undergoes sufficient mixing and melting in the screw. The length is generally determined according to process requirements and is usually more than 15 times the screw diameter.
[0070] Screw shape:
[0071] The screw rod is generally cylindrical and smooth to reduce friction.
[0072] Thread design:
[0073] The design of the thread determines the movement of the material in the screw rod. The threads of the double screw rod are usually designed as double-headed or triple-headed threads that mesh with each other to increase the shearing force and mixing effect of the material.
[0074] Further, in the above technical solution, the pitch of the single screw rod 20 gradually decreases near the discharge end.
[0075] Further, in the above technical solution, the metering pump 30 is internally provided with a piston, and the stroke length of the piston is adjustable.
[0076] The stroke length of the piston can be adjusted by an external adjusting mechanism, such as a manual or electric adjusting knob, which drives the piston driving mechanism through the adjusting knob to change the stroke length of the piston, thereby achieving the purpose of quantitative feeding.
[0077] Further, in the above technical solution, the pump cavity of the metering pump 30 is designed in a wave shape.
[0078] Further, in the above technical solution, the pore size of each stage of the measuring screen 40 decreases from the material entering direction to the flowing direction.
[0079] The first stage of the filter screen has a larger pore size for removing larger particles, and the pore size of the second stage and subsequent stages gradually decreases to ensure that the material reaches the best dispersion state after multiple filtrations.
[0080] Further, in the above technical solution, a transition section 21 is provided between the double screw rod 10 and the single screw rod 20, and the inner diameter of the transition section 21 is greater than the outer diameter of the single screw rod 20.
[0081] Further, in the above technical solution, the multiple layers of the measuring screen 40 are connected through a fixed frame, and each layer of the filter screen is fixed to the fixed frame through fasteners.
[0082] Further, in the above technical solution, the fasteners are specifically screws or welding.
[0083] Further, in the above technical solution, a sealing ring is provided at the connection between the single screw rod 20 and the double screw rod 10.
[0084] Specifically, the principle of the utility model is:
[0085] Double screw rod design:
[0086] The twin screw includes a first screw and a second screw, which are arranged in parallel and intermeshed, and jointly form a melting and preliminary mixing space for the material;
[0087] The channel depth of the first screw and the second screw gradually decreases from the feeding end to the discharging end, so as to increase the shearing force between the screws, and ensure sufficient mixing and melting of the material;
[0088] Single screw design:
[0089] The single screw is located behind the discharging end of the twin screw, and the axis of the single screw is in the same plane as the axis of the twin screw, so as to ensure smooth transition of the material from the twin screw to the single screw;
[0090] The pitch of the single screw gradually decreases in the part close to the discharging end, further enhancing the homogenization effect of the material and reducing the agglomeration phenomenon;
[0091] Metering pump design:
[0092] The metering pump is directly connected with the discharging end of the single screw, and is internally provided with a piston, the stroke length of which is adjustable, so as to improve the flexibility and precision of the material supply;
[0093] The pump cavity is designed in a wave shape, which increases the contact area between the material and the inner wall of the pump cavity, and improves the conveying precision;
[0094] Mesh design:
[0095] The mesh is provided with a multi-stage filtering structure, the pore size of each stage of the filter screen gradually decreases from the material entering direction to the material flowing direction, so as to ensure gradual refinement of the material and improve the detection precision of the dispersion performance;
[0096] The front end of the mesh is provided with a pressure sensor, which can monitor the pressure change in real time and provide a quantitative index of the dispersion performance;
[0097] Transition section design:
[0098] The transition section is provided between the twin screw and the single screw, and the inner diameter of the transition section is greater than the outer diameter of the single screw, so as to reduce the resistance in the material flow process and ensure smooth transition of the material;
[0099] The length of the transition section is reasonably designed, so as to ensure smooth transition of the material and reduce the turbulent flow of the material.
Claims
1. A two-stage pigment dispersibility detection apparatus characterized by comprising: The device comprises a double screw (10), a single screw (20), a metering pump (30) and a measuring screen (40), the double screw (10) and the single screw (20) are sequentially arranged to form a double-stage structure, the single screw (20) is connected to the metering pump (30), the metering pump (30) is connected to the measuring screen (40), the double screw (10) comprises a first screw (11) and a second screw (12), the first screw (11) and the second screw (12) are arranged in parallel and are engaged with each other, the single screw (20) is located behind the discharge end of the double screw (10), the axis of the single screw (20) is in the same plane as the axis of the double screw (10), the metering pump (30) is directly connected to the discharge end of the single screw (20), and the measuring screen (40) is provided with a multi-stage filtering structure.
2. The apparatus according to claim 1, wherein The channel depth of the first screw (11) and the second screw (12) gradually decreases from the feeding end to the discharge end.
3. The apparatus according to claim 2, wherein The pitch of the single screw (20) gradually decreases in the part close to the discharge end.
4. The apparatus according to claim 3, wherein The metering pump (30) is internally provided with a piston.
5. The apparatus according to claim 4, wherein The pump cavity of the metering pump (30) is designed in a wave shape.
6. The apparatus according to claim 5, wherein The pore size of each stage of the measuring screen (40) gradually decreases from the material entering direction to the flowing direction.
7. The apparatus according to claim 6, wherein A transition section (21) is arranged between the double screw (10) and the single screw (20), and the inner diameter of the transition section (21) is greater than the outer diameter of the single screw (20).
8. The apparatus according to claim 7, wherein The multi-layer structure of the measuring screen (40) is connected through a fixed frame, and each layer of filter screen is fixed on the fixed frame through a fastener.
9. The apparatus according to claim 8, wherein The fastener is specifically a screw or a welding method.
10. The apparatus according to claim 9, wherein A sealing ring is arranged at the connection between the single screw (20) and the double screw (10).