A silicone sealant multi-stage static mixer
By designing a multi-stage static mixer, using thermally conductive oil to heat and melt the crust and block the crust transmission through the filter plate, the product quality problems and low production efficiency caused by crust in the static mixer are solved, and an efficient production process without shutdown and cleaning is achieved.
Patent Information
- Application Number
- CN202421511238.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-28
AI Technical Summary
After a long-term shutdown of the static mixer in the existing silicone sealant production, crust will occur in the mixing core, resulting in product quality problems. The traditional filtration treatment requires manual cleaning, which reduces production efficiency.
A multi-stage static mixer of silicone sealant is designed, including several mixing mechanisms connected to the end. Each mixing mechanism is equipped with an inner tube and an outer tube. There are left-handed and right-handed blades in the inner tube. The outer tube can accommodate thermal oil. The heating of the materials in the inner tube can be achieved through the oil inlet and oil return joints, and the temperature is controlled through a temperature sensor. At the same time, a filter plate is installed between adjacent mixing mechanisms to prevent the transmission of the crust.
By heating and melting the crust, it prevents it from clogging the filter device, and efficient production without shutdown and cleaning is achieved, improving product quality and production efficiency, and reducing labor intensity.
Smart Images
Figure CN222739005U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of silicone sealant production mixing devices, in particular to a silicone sealant multi-stage static mixer. Background Art
[0002] Silicone sealant is a material that solidifies into a tough rubber-like solid once it comes into contact with moisture in the air. It is mainly divided into deacetic acid type, dealcohol type, deaminated type, and depropylated type. Silicone sealant is often used for bonding and sealing glass, commonly known as glass glue. Silicone sealant has strong bonding force and high tensile strength. It is also weather-resistant, vibration-resistant, moisture-proof, odor-resistant, and adaptable to large changes in temperature. In addition, its wide applicability allows it to achieve bonding between most building materials, so its application value is very large.
[0003] At present, silicone sealants are used as sealants, adhesives, and potting agents, and are widely used in the fields of construction, machinery, automobiles, and electronics. In most cases, silicone sealants are high-viscosity pastes, and static mixers are required in the production process of silicone sealants. Static mixers are high-efficiency mixing equipment without moving parts. Their basic working mechanism is to use the mixing unit fixed in the tube to change the flow state of the fluid in the tube to achieve good dispersion and full mixing between different fluids.
[0004] The principle of static mixer is to let silicone sealant flow in the pipeline and impact various types of plate components. Due to the action of the mixing element, the silicone sealant sometimes rotates left and sometimes rotates right, constantly changing the flow direction, not only pushing the central colloid to the periphery, but also pushing the peripheral colloid to the center, thus creating a good radial mixing effect. When the static mixer is stopped for more than 2 hours for re-production, crusts will form in the mixing core. During re-production, these crusts will be transported through the mixing core to the glue behind, affecting the product appearance and causing product quality problems.
[0005] Traditionally, the crust is filtered by a filter plate to prevent it from being transported to the slurry behind it to improve product quality. However, the crust will gradually accumulate in the filter device, thereby clogging the filter device and preventing mixing from proceeding smoothly. Manual cleaning is required at this time, and the operation is relatively cumbersome, which results in the need to shut down the machine for cleaning, reducing production efficiency and increasing labor intensity. Utility Model Content
[0006] In view of this, the technical problem to be solved by the utility model is: to provide a silicone sealant multi-stage static mixer, which can filter the crust in the mixing core and heat and melt the crust to prevent it from clogging the filtering device, without stopping for cleaning, thereby improving production efficiency and reducing labor intensity.
[0007] In order to solve the above technical problems, the technical solution of the utility model is:
[0008] A silicone sealant multi-stage static mixer comprises a metering cylinder storing a primary mixed material, wherein a discharge port of the metering cylinder is connected and communicated with a discharge pipe; a plurality of mixing mechanisms connected end to end are detachably installed in sequence downstream of the discharge pipe;
[0009] The mixing mechanism comprises an inner tube and an outer tube coaxially arranged with the inner tube, at least one left-handed blade and at least one right-handed blade are fixedly arranged inside the inner tube, two ends of the outer tube and two ends of the inner tube are respectively fixedly connected with flanges, and there is a distance between the outer tube and the inner tube to form a closed annular cavity, and the annular cavity is used to contain heat transfer oil that can heat the inner cavity of the inner tube;
[0010] An oil inlet joint, an oil return joint and a temperature sensor are detachably mounted on the outer wall of the outer tube, and the oil inlet joint, the oil return joint and the temperature sensor are all connected and communicated with the annular cavity;
[0011] A filter plate is detachably mounted between two adjacent mixing mechanisms, and the filter plate is arranged upstream of the mixing mechanism along the moving direction of the silicone sealant.
[0012] Preferably, the discharge pipe is arranged to be inclined downward along the radial direction of the metering cylinder.
[0013] Preferably, the left-handed blade is arranged upstream of the right-handed blade along the moving direction of the silicone sealant and is fixedly connected to the right-handed blade.
[0014] Preferably, the oil inlet joint is arranged upstream along the moving direction of the silicone sealant, and the oil return joint is arranged downstream along the moving direction of the silicone sealant.
[0015] Preferably, along the moving direction of the silicone sealant, the oil return joint on the first mixing mechanism is connected to the oil inlet joint on the second mixing mechanism through a connecting pipe.
[0016] Preferably, the temperature sensor is symmetrically arranged with respect to the oil return joint along the axis of the outer tube; the oil inlet joint and the oil return joint are both arranged above the outer tube in the vertical direction, and the temperature sensor is arranged below the outer tube in the vertical direction.
[0017] Preferably, the number of the mixing mechanisms is four.
[0018] Preferably, the flange is provided with an annular groove for accommodating the filter plate, and a plurality of limiting protrusions are convexly provided at the bottom of the annular groove; and the filter plate is provided with limiting through holes for use with the limiting protrusions.
[0019] Preferably, a plurality of the limiting protrusions are equidistantly arranged at the bottom of the annular groove in the circumferential direction around the axis of the flange.
[0020] Preferably, the limiting protrusion and the limiting through hole are both arc-shaped.
[0021] After adopting the above technical solution, the beneficial effects of the utility model are:
[0022] In the utility model, a plurality of mixing mechanisms connected end to end are provided, the mixing mechanism comprises an inner tube and an outer tube, at least one left-handed blade and at least one right-handed blade are fixedly provided in the inner tube, and the left-handed blade cooperates with the right-handed blade to statically mix the materials, and has a good radial mixing effect, and meets the mixing requirements of the materials. The two ends of the outer tube and the inner tube are respectively fixedly connected with the flange plate, and there is a spacing between the outer tube and the inner tube to form a closed annular cavity, and the annular cavity is used to contain the heat transfer oil. The outer tube is equipped with an oil inlet joint and an oil return joint, and the heat transfer oil can be injected into the annular cavity through the oil inlet joint and the oil return joint to heat the material in the inner tube, and at the same time, the crust bonded on the left-handed blade or the right-handed blade can be heated and melted, and continue to participate in the mixing process, thereby improving the product quality and reducing the production cost. At the same time, a temperature sensor connected and connected to the annular cavity is also installed on the outer tube, which can detect the temperature of the heat transfer oil in the annular cavity, realize temperature control, and improve the use effect. A filter plate is installed between two adjacent mixing mechanisms, the filter plate can block the crust, and the filter plate is arranged upstream of the mixing mechanism, which can intercept the crust and prevent it from entering the next mixing mechanism, thereby improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0024] Figure 1 This is a schematic diagram of the structure of a multi-stage static mixer for silicone sealant according to an embodiment of the utility model;
[0025] Figure 2 yes Figure 1 The structural diagram of the mixing mechanism;
[0026] Figure 3 yes Figure 2 Exploded diagram of
[0027] Figure 4 yes Figure 2 A cross-sectional view of
[0028] In the figure:
[0029] 1. Metering cylinder; 2. Discharge pipe; 3. Mixing mechanism; 31. Inner pipe; 32. Outer pipe; 331. Left-handed blade; 332. Right-handed blade; 34. Flange; 341. Annular groove; 342. Limiting protrusion; 35. Annular cavity; 41. Oil inlet joint; 42. Oil return joint; 43. Temperature sensor; 44. Connecting pipe; 5. Filter plate; 51. Limiting through hole; 52. Filter hole;
[0030] Figure 4 The solid arrow in the middle is the movement direction of the heat transfer oil, and the dotted arrow is the movement direction of the mixed material. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.
[0032] The terms such as "front", "back", "left", "right", "middle", etc. cited in this specification are only for the convenience of description and are not used to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships should be regarded as the scope of implementation of the present invention without substantially changing the technical content.
[0033] like Figures 1 to 4 As shown, the utility model includes a metering cylinder 1 storing the primary mixed material, and the discharge port of the metering cylinder 1 is connected and connected with the discharge pipe 2; a plurality of mixing mechanisms 3 connected end to end are detachably installed in sequence downstream of the discharge pipe 2. In the utility model, the discharge pipe 2 is arranged to be tilted downward along the radial direction of the metering cylinder 1, and the discharge pipe 2 is connected to the mixing mechanism 3, driving the mixing mechanism 3 to be arranged tilted downward together, and under the action of gravity, the mixing and moving speed of the material is increased, and the work efficiency is improved. The number of mixing mechanisms 3 is determined according to the requirements for the mixing degree of the material. Preferably, the number of mixing mechanisms is four, forming multi-stage mixing.
[0034] The mixing mechanism 3 includes an inner tube 31 and an outer tube 32 coaxially arranged with the inner tube 31. At least one left-handed blade 331 and at least one right-handed blade 332 are fixedly arranged inside the inner tube 31. The number of the left-handed blades 331 and the right-handed blades 332 depends on the mixing degree requirements of the materials and the lengths of the inner tube 31 and the outer tube 32, but at least one is provided for both. Through the cooperation of the left-handed blade 331 and the right-handed blade 332, the materials can be statically mixed, with a good radial mixing effect, meeting the mixing requirements of the materials.
[0035] Preferably, the left-handed blade 331 is disposed upstream of the right-handed blade 332 along the moving direction of the silicone sealant and is fixedly connected to the right-handed blade 332 .
[0036] Both ends of the outer tube 32 and the inner tube 31 are fixedly connected to the flanges 34 respectively. There is a gap between the outer tube 32 and the inner tube 31 to form a closed annular cavity 35. The annular cavity 35 is used to accommodate heat transfer oil that can heat the inner cavity of the inner tube 31.
[0037] In order to facilitate the delivery of the heat transfer oil to the annular cavity 35 to form a loop, an oil inlet joint 41, an oil return joint 42 and a temperature sensor 43 are detachably installed on the outer wall of the outer tube 32, and the oil inlet joint 41, the oil return joint 42 and the temperature sensor 43 are all connected and connected with the annular cavity 35; by setting the oil inlet joint 41 and the oil return joint 42, the heat transfer oil can be injected into the annular cavity 35 to heat the material in the inner tube 31. At the same time, according to the principle of heat transfer, the crust bonded to the left-handed blade 331 or the right-handed blade 332 can also be heated and melted to continue to participate in the mixing process, thereby improving product quality and reducing production costs. Secondly, a temperature sensor 43 connected and connected with the annular cavity 35 is also installed on the outer tube 32, which can detect the temperature of the heat transfer oil in the annular cavity 35. According to the detected temperature value, the circulation speed of the heat transfer oil can be increased or the oil temperature of the heat transfer oil can be increased, so that the temperature can be controlled and the use effect can be improved.
[0038] Preferably, the oil inlet joint 41 is arranged upstream along the moving direction of the silicone sealant, and the oil return joint 42 is arranged downstream along the moving direction of the silicone sealant; along the moving direction of the silicone sealant, the oil return joint 42 on the previous mixing mechanism 3 is connected to the oil inlet joint 41 on the next mixing mechanism 3 through the connecting pipe 44. The annular cavities 35 on several mixing mechanisms 3 are not connected under normal conditions, but after the connecting pipe 44 is arranged, the annular cavities 35 on two adjacent mixing mechanisms 3 can be connected, and the annular cavities 35 on several mixing mechanisms 3 can be input with heat transfer oil only through the oil inlet joint 41 located at the most upstream and the oil return joint 42 located at the most downstream, which reduces the setting of external pipelines, reduces the difficulty of external pipeline layout, reduces the space occupied by external pipelines, and improves neatness.
[0039] Preferably, the temperature sensor 43 is symmetrically arranged along the axis of the outer tube 32 and the oil return joint 42; the oil inlet joint 41 and the oil return joint 42 are both arranged above the outer tube 32 in the vertical direction, which can ensure that the heat transfer oil fills the entire annular cavity 35 and improves the heating effect on the inner tube 31. The temperature sensor 43 is arranged below the outer tube 32 in the vertical direction, which can accurately detect the temperature of the heat transfer oil after heat transfer, thereby improving the accuracy of the detection.
[0040] A filter plate 5 is detachably mounted between two adjacent mixing mechanisms 3, and the filter plate 5 is arranged upstream of the mixing mechanism 3 along the moving direction of the silicone sealant. The filter plate 5 can block the crust, and the filter plate 5 is arranged upstream of the mixing mechanism 3 to intercept the crust and prevent it from entering the next mixing mechanism 3, thereby improving product quality.
[0041] In the present utility model, in order to facilitate the opening, disassembly and installation of the filter plate 5 and improve the installation and later maintenance efficiency, the flange 34 is provided with an annular groove 341 for accommodating the filter plate 5, and the bottom of the annular groove 341 is provided with a plurality of limiting protrusions 342; the filter plate 5 is provided with limiting through holes 51 used in conjunction with the limiting protrusions 342. The filter plate 5 is placed in the groove of the annular groove 341, and the thickness of the filter plate 5 is not greater than the depth of the annular groove 341. After the filter plate 5 is placed in the groove of the annular groove 341, the two adjacent flanges 34 cooperate to fix the filter plate 5 to prevent it from falling out of the annular groove 341.
[0042] The filter plate 5 is provided with a plurality of filter holes 52 . Preferably, the diameter of the filter holes 52 is 0.15 mm to 0.25 mm.
[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A silicone sealant multi-stage static mixer, comprising a metering cylinder for storing a primary mixed material, wherein a discharge port of the metering cylinder is connected to a discharge pipe; characterized in that: A plurality of mixing mechanisms connected end to end are detachably installed in sequence downstream of the discharge pipe; The mixing mechanism comprises an inner tube and an outer tube coaxially arranged with the inner tube, at least one left-handed blade and at least one right-handed blade are fixedly arranged inside the inner tube, two ends of the outer tube and two ends of the inner tube are respectively fixedly connected with flanges, and there is a distance between the outer tube and the inner tube to form a closed annular cavity, and the annular cavity is used to contain heat transfer oil that can heat the inner cavity of the inner tube; An oil inlet joint, an oil return joint and a temperature sensor are detachably mounted on the outer wall of the outer tube, and the oil inlet joint, the oil return joint and the temperature sensor are all connected and communicated with the annular cavity; A filter plate is detachably mounted between two adjacent mixing mechanisms, and the filter plate is arranged upstream of the mixing mechanism along the moving direction of the silicone sealant.
2. The multi-stage static mixer for silicone sealant according to claim 1, characterized in that: The discharge pipe is arranged to be inclined downward along the radial direction of the metering cylinder.
3. The multi-stage static mixer for silicone sealant according to claim 1, characterized in that: The left-handed blade is arranged upstream of the right-handed blade along the moving direction of the silicone sealant and is fixedly connected to the right-handed blade.
4. The multi-stage static mixer for silicone sealant according to claim 1, characterized in that: The oil inlet joint is arranged upstream along the moving direction of the silicone sealant, and the oil return joint is arranged downstream along the moving direction of the silicone sealant.
5. The multi-stage static mixer for silicone sealant according to claim 4, characterized in that: Along the moving direction of the silicone sealant, the oil return joint on the first mixing mechanism is connected to the oil inlet joint on the second mixing mechanism through a connecting pipe.
6. The multi-stage static mixer for silicone sealant according to claim 4, characterized in that: The temperature sensor is symmetrically arranged with respect to the oil return joint along the axis of the outer tube; the oil inlet joint and the oil return joint are both arranged above the outer tube in the vertical direction, and the temperature sensor is arranged below the outer tube in the vertical direction.
7. The multi-stage static mixer for silicone sealant according to claim 1, characterized in that: The number of the mixing mechanisms is four.
8. The multi-stage static mixer for silicone sealant according to claim 1, characterized in that: The flange is provided with an annular groove for accommodating the filter plate, and a plurality of limiting protrusions are convexly provided at the bottom of the annular groove; and the filter plate is provided with limiting through holes used in conjunction with the limiting protrusions.
9. The multi-stage static mixer for silicone sealant according to claim 8, characterized in that: A plurality of the limiting protrusions are equidistantly arranged at the bottom of the annular groove around the axis of the flange.
10. The multi-stage static mixer for silicone sealant according to claim 8, characterized in that: The limiting protrusion and the limiting through hole are both arc-shaped.