A stirring device for PVC profile production material
Patent Information
- Application Number
- CN202522238679.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-23
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-10-23
AI Technical Summary
Existing mixing devices in PVC profile production suffer from problems such as low mixing efficiency, uneven material dispersion, and dead zones. In particular, liquid additives tend to agglomerate, leading to prolonged mixing time, and PVC resin powder tends to clump.
The system employs a composite mixing structure, including serrated blades, a spiral agitator, an anchor agitator, and guide ribs. The serrated blades disperse the liquid additives, the spiral agitator pushes the material downwards, the anchor agitator deeply mixes the mixture and sends it upwards, and the anchor agitator scrapes away the material accumulated on the side walls, forming a circulating flow field to achieve rapid mixing of materials.
It improves mixing efficiency and uniformity, solves the problem of uneven mixing, and achieves rapid and comprehensive mixing of materials.
Smart Images
Figure CN224928257U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of PVC profile production technology, specifically to a mixing device for materials used in PVC profile production. Background Technology
[0002] PVC stands for polyvinyl chloride, a type of plastic. Other components are added to enhance its heat resistance, toughness, and ductility. In production, polyvinyl chloride resin (powder) needs to be thoroughly mixed with various additives (liquid or solid granules). The quality of the mixing directly affects the heat resistance, toughness, and other properties of the profile.
[0003] In existing mixing devices, the mixing structure is relatively simple, mostly using a single-layer blade rotation mixing. The material is prone to forming local circulation in the container, resulting in uneven dispersion of resin and additives. In particular, liquid additives are prone to agglomerate into droplets, requiring extended mixing time for initial mixing. The mixing efficiency is low. Furthermore, due to the poor flowability of the material and the small particle size (50-150μm) of PVC resin powder, it is easy to adsorb and clump. During the mixing process, it is very easy to accumulate at the corners of the container side wall, forming a mixing dead zone, which cannot fully mix the material.
[0004] Therefore, it is necessary to invent a mixing device for PVC profile production materials to solve the above problems. Utility Model Content
[0005] The purpose of this invention is to provide a mixing device for PVC profile production materials, in order to solve the problems of low mixing efficiency and inability to fully mix materials in the technology.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a mixing device for PVC profile production materials, comprising a mixing tank, a feed pipe fixedly connected to the upper end of the mixing tank, a discharge pipe fixedly connected to the lower end of the mixing tank, a pneumatic valve installed inside the discharge pipe, a separation net fixedly connected to the center of the mixing tank, inclined guide ribs fixedly connected to the inner wall of the mixing tank, and a mixing component installed inside the mixing tank, the mixing component comprising a first rotating shaft, serrated blades, a first transmission gear, a second rotating shaft, a spiral mixing paddle, an anchor mixing paddle, a scraper, a second transmission gear, a first motor, a first drive gear, a second motor, and a second drive gear.
[0007] By adopting the above technical solution, the serrated blades rotate at high speed to disperse liquid and solid additives into tiny droplets and particles, which are then initially mixed with the materials. The spiral agitator is used to push the materials downward, allowing them to pass through the separation net and enter the lower side. At the same time, the spiral agitator works with the separation net to break up agglomerates. The anchor agitator is used to stir the lower layer of materials and push them upward. Under the action of the guide ribs, the materials rise along the inner wall, forming a downward circulating stirring flow field.
[0008] Optionally, a mounting base is fixedly connected to the middle of the upper end of the mixing tank, and a device housing is fixedly connected to the upper end of the mounting base. The first motor and the second motor are respectively installed on the left and right sides of the upper end of the device housing.
[0009] Optionally, the first rotating shaft is rotatably connected to the center of the mounting base, and the serrated blade is fixedly connected to the lower end of the first rotating shaft.
[0010] By adopting the above technical solution, the first rotating shaft is used to drive the sawtooth blade to rotate.
[0011] Optionally, the first transmission gear is fixedly connected to the upper end of the first rotating shaft, the first drive gear is fixedly connected to the output end of the first motor, and the first drive gear is meshed with the first transmission gear.
[0012] By adopting the above technical solution, the first motor drives the first rotating shaft to rotate through the cooperation of the first driving gear and the first transmission gear.
[0013] Optionally, the second rotating shaft is rotatably connected to the center of the first rotating shaft and the separation net, the spiral agitator is fixedly connected to the surface of the second rotating shaft at the position above the separation net, the lower end of the second rotating shaft of the anchor agitator is fixedly connected, and the scraper is fixedly connected to the side of the anchor agitator.
[0014] By adopting the above technical solution, the second rotating shaft is used to drive the spiral agitator, the anchor agitator, and the scraper to rotate.
[0015] Optionally, the second transmission gear is fixedly connected to the upper end of the second rotating shaft, the second drive gear is fixedly connected to the output end of the second motor, and the second drive gear is meshed with the second transmission gear.
[0016] By adopting the above technical solution, the second motor drives the second rotating shaft to rotate through the cooperation of the second driving gear and the second transmission gear.
[0017] Optionally, the mixing tank is provided with an inspection window on its side.
[0018] By adopting the above technical solution, the inspection window is used to inspect the inside of the mixing tank.
[0019] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. This utility model uses serrated blades, a spiral stirring paddle, an anchor-type stirring paddle, and guide ribs to work together to stir and mix materials and additives. The composite stirring structure and the circulating flow field work together to achieve rapid mixing of materials, improve mixing efficiency and mixing uniformity. 2. This utility model improves the uniformity of material mixing by rotating the anchor-type stirring paddle, which drives the scraper to rotate at the corner of the inner wall of the mixing tank, thereby scraping away the accumulated material. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the first rotating shaft structure of this utility model; Figure 4 This is a schematic diagram of the second rotating shaft structure of this utility model.
[0021] Explanation of reference numerals in the attached figures: 1. Mixing tank; 11. Feed pipe; 12. Discharge pipe; 13. Pneumatic valve; 14. Inspection window; 15. Mounting base; 16. Separation net; 17. Guide rib; 2. First rotating shaft; 21. Serrated blade; 22. First transmission gear; 3. Second rotating shaft; 31. Spiral agitator; 32. Anchor agitator; 33. Scraper; 34. Second transmission gear; 4. Equipment casing; 41. First motor; 42. First drive gear; 43. Second motor; 44. Second drive gear. Detailed Implementation
[0022] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0023] This utility model provides, for example Figures 1 to 4 The mixing device shown includes a mixing tank 1, a feed pipe 11 fixedly connected to the upper end of the mixing tank 1, a discharge pipe 12 fixedly connected to the lower end of the mixing tank 1, a pneumatic valve 13 installed inside the discharge pipe 12, a separation net 16 fixedly connected to the center inside the mixing tank 1, inclined guide ribs 17 fixedly connected to the inner wall of the mixing tank 1, an inspection window 14 provided on the side of the mixing tank 1, and a mixing component installed inside the mixing tank 1.
[0024] The lower end of the mixing tank 1 is funnel-shaped to facilitate material feeding. During use, PVC resin is injected into the mixing tank 1 through the front feed pipe 11, and solid additives are injected into the mixing tank 1 through the rear feed pipe 11. Liquid additives are then evenly sprayed onto the material surface through the spray nozzles on both sides. The agitator is activated during the feeding process to crush and mix the incoming material for the first time.
[0025] See Figures 2 to 4 The mixing components include a first rotating shaft 2, a serrated blade 21, a first transmission gear 22, a second rotating shaft 3, a spiral mixing paddle 31, an anchor mixing paddle 32, a scraper 33, a second transmission gear 34, a first motor 41, a first drive gear 42, a second motor 43, and a second drive gear 44. A mounting base 15 is fixedly connected to the middle of the upper end of the mixing tank 1. A device housing 4 is fixedly connected to the upper end of the mounting base 15. The first motor 41 and the second motor 43 are respectively installed on the left and right sides of the upper end of the device housing 4.
[0026] During the mixing process, the first motor 41 drives the first rotating shaft 2 and the sawtooth blade 21 to rotate, crushing and pre-mixing the material. The second motor 43 drives the second rotating shaft 3, the spiral mixing blade 31 and the anchor mixing blade 32 to rotate, mixing the material.
[0027] See Figure 2 and Figure 3 The first rotating shaft 2 is rotatably connected to the center of the mounting base 15, the sawtooth blade 21 is fixedly connected to the lower end of the first rotating shaft 2, the first transmission gear 22 is fixedly connected to the upper end of the first rotating shaft 2, the first drive gear 42 is fixedly connected to the output end of the first motor 41, and the first drive gear 42 is meshed with the first transmission gear 22.
[0028] Specifically, the output end of the first motor 41 drives the first drive gear 42 to rotate. The first drive gear 42 cooperates with the first transmission gear 22 to drive the first rotating shaft 2 to rotate at high speed. The first rotating shaft 2 drives the sawtooth blade 21 to rotate at high speed. The side of the sawtooth blade 21 is provided with multiple sets of triangular shearing teeth to rotate and shear the additives and materials, thereby breaking up the clumps of materials and dispersing the additives into tiny particles or tiny droplets, preventing the materials and additives from agglomerating, improving the uniformity of additive dispersion, and facilitating rapid mixing with the materials.
[0029] See Figure 2 and Figure 4The second rotating shaft 3 is rotatably connected to the center of the first rotating shaft 2 and the separation net 16. The spiral stirring paddle 31 is fixedly connected to the surface of the second rotating shaft 3 at the position above the separation net 16. The anchor stirring paddle 32 is fixedly connected to the lower end of the second rotating shaft 3. The scraper 33 is fixedly connected to the side of the anchor stirring paddle 32. The second transmission gear 34 is fixedly connected to the upper end of the second rotating shaft 3. The second drive gear 44 is fixedly connected to the output end of the second motor 43. The second drive gear 44 meshes with the second transmission gear 34.
[0030] Simultaneously, the output end of the second motor 43 drives the second drive gear 44 to rotate. The second drive gear 44 cooperates with the second transmission gear 34 to drive the second rotating shaft 3 to rotate at high speed. The second rotating shaft 3 drives the spiral stirring paddle 31 and the anchor stirring paddle 32 to rotate at high speed. The spiral stirring paddle 31 performs initial stirring of the material and pushes the material downward, allowing the material to pass through the separation net 16 to the lower side. At the same time, the anchor stirring paddle 32 performs deep stirring and mixing of the material and additives on the lower side, and cooperates with multiple sets of guide ribs 17 to guide the material upward along the inner wall of the mixing tank 1, so that the material circulates up and down inside the mixing tank 1.
[0031] In addition, under the action of the separation net 16, the agglomerated and clumped material will remain on the upper side of the separation net 16, and be broken up by the rotation of the spiral agitator 31. After being broken up, it will slide down from the separation net 16 to the lower side for deep mixing.
[0032] Furthermore, during the mixing process, the anchor-type stirring paddle 32 will drive the side scraper 33 to rotate along the corner of the inner wall of the mixing tank 1, scraping off the sticky and accumulated materials, effectively preventing the materials from accumulating at the corner, and further improving the mixing uniformity.
[0033] The working principle of this utility model is as follows: After the material is fed into the mixing tank 1, the fixed additive and liquid additive are then fed into the mixing tank 1. At this time, the serrated blades 21 rotate at high speed to disperse the liquid additive and solid additive into tiny droplets and tiny particles, so that they are initially mixed with the material. At the same time, the spiral stirring paddle 31 stirs the material for the first time and pushes the material downward, so that the material passes through the separation net 16 and enters the lower side. During the process, the spiral stirring paddle 31 works with the separation net 16 to break up the agglomerates. At the same time, the anchor stirring paddle 32 stirs the lower layer of material and pushes the material upward. Under the action of the guide ribs 17, the material rises along the inner wall, forming an upper and lower circulating stirring flow field. The composite stirring structure and the circulating flow field work together to achieve rapid mixing of materials and improve mixing efficiency and mixing uniformity.
[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A mixing device for materials used in PVC profile production, comprising a mixing tank (1), characterized in that: The upper end of the mixing tank (1) is fixedly connected to a feed pipe (11), the lower end of the mixing tank (1) is fixedly connected to a discharge pipe (12), a pneumatic valve (13) is installed inside the discharge pipe (12), a separation net (16) is fixedly connected to the center inside the mixing tank (1), an inclined guide rib (17) is fixedly connected to the inner wall of the mixing tank (1), and a mixing component is installed inside the mixing tank (1). The mixing component includes a first rotating shaft (2), a sawtooth blade (21), a first transmission gear (22), a second rotating shaft (3), a spiral mixing paddle (31), an anchor mixing paddle (32), a scraper (33), a second transmission gear (34), a first motor (41), a first drive gear (42), a second motor (43), and a second drive gear (44).
2. The mixing device for PVC profile production materials according to claim 1, characterized in that: A mounting base (15) is fixedly connected to the middle of the upper end of the mixing tank (1), and a device housing (4) is fixedly connected to the upper end of the mounting base (15). The first motor (41) and the second motor (43) are respectively installed on the left and right sides of the upper end of the device housing (4).
3. The mixing device for PVC profile production materials according to claim 2, characterized in that: The first rotating shaft (2) is rotatably connected to the center of the mounting base (15), and the serrated blade (21) is fixedly connected to the lower end of the first rotating shaft (2).
4. A mixing device for PVC profile production materials according to claim 3, characterized in that: The first transmission gear (22) is fixedly connected to the upper end of the first rotating shaft (2), the first driving gear (42) is fixedly connected to the output end of the first motor (41), and the first driving gear (42) is meshed with the first transmission gear (22).
5. A mixing device for PVC profile production materials according to claim 2, characterized in that: The second rotating shaft (3) is rotatably connected to the center of the first rotating shaft (2) and the separation net (16). The spiral stirring paddle (31) is fixedly connected to the surface of the second rotating shaft (3) at the position above the separation net (16). The anchor stirring paddle (32) is fixedly connected to the lower end of the second rotating shaft (3). The scraper (33) is fixedly connected to the side of the anchor stirring paddle (32).
6. A mixing device for PVC profile production materials according to claim 5, characterized in that: The second transmission gear (34) is fixedly connected to the upper end of the second rotating shaft (3), the second driving gear (44) is fixedly connected to the output end of the second motor (43), and the second driving gear (44) is meshed with the second transmission gear (34).
7. A mixing device for PVC profile production materials according to claim 1, characterized in that: The mixing tank (1) is provided with an inspection window (14) on its side.