Mixing tank for chlorinated polyvinyl chloride mixture production
By designing scraper and specific stirring structure in the mixing tank for chlorinated polyvinyl chloride mixture production, the problem of mixing accumulation in the inner wall of the tank body is solved, the product quality and thermal stability are improved, and the production cost is reduced and downtime.
Patent Information
- Application Number
- CN202421250259.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-06-03
AI Technical Summary
During the production process of chlorinated polyvinyl chloride mixture, traditional high-speed mixing tanks can easily cause the mixture to absorb and accumulate on the side walls of the tank body and the tank cover, resulting in inconvenience in cleaning and maintenance, increasing production costs and downtime, and reducing the Thermal stability and quality of the product.
A mixing tank for the production of chlorinated polyvinyl chloride mixture was designed, equipped with a scraper and a specific stirring structure, including an annular scraping sleeve, connecting rod, slide rod and pneumatic telescopic rod, which can be automatically scraped after stirring is completed. Remove materials from the inner wall of the tank to reduce accumulation and cleaning difficulties.
Through this design, the accumulation of materials on the inner wall of the tank is significantly reduced, the quality and thermal stability of the chlorinated polyvinyl chloride mixture is improved, and the production cost and downtime are reduced.
Smart Images
Figure CN222431236U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of chlorinated polyvinyl chloride production, in particular to a mixing tank for producing chlorinated polyvinyl chloride mixtures. Background Art
[0002] In the production process of CPVC mixture, mixing is a crucial link. The current CPVC mixture mixing process includes raw material metering, feeding, hot mixing, cold mixing and packaging or storage. Among them, the hot mixing process is carried out in a high-speed mixing tank, the mixing time is between 8min and 12min, the temperature of the CPVC mixture reaches between 110℃ and 130℃, and the static electricity and adhesion of the mixture powder itself increase. In traditional high-speed mixing tanks, CPVC mixtures are easily adsorbed and accumulated on the side walls and tank covers of the mixing tanks, which not only causes many inconveniences in cleaning and maintenance, but also increases production costs and downtime. The residual materials accumulated in the high-speed mixing tanks are heated after multiple mixing, and the thermal stability is greatly reduced. During the mixing process, HCl gas is released by decomposition and mixed with the CPVC mixture, resulting in reduced thermal stability of the CPVC mixture product and reduced product quality. Summary of the invention
[0003] The technical problem to be solved by the utility model is: in view of the deficiencies in the prior art, a mixing tank for producing chlorinated polyvinyl chloride mixture is provided, in which materials are not easy to accumulate and the chlorinated polyvinyl chloride mixture has high quality.
[0004] In order to solve the above technical problems, the technical solution of the utility model is:
[0005] A mixing tank for producing chlorinated polyvinyl chloride mixture comprises a tank body and a cover body, a stirring shaft is arranged at the bottom of the tank body, the lower end of the stirring shaft is connected to a motor via a belt, a discharge port is arranged at the lower part of the tank body, a scraper is arranged inside the tank body, the scraper comprises a scraper sleeve which is arranged in an annular manner and adapted to the inner wall of the tank body, a plurality of connecting rods are arranged inside the scraper sleeve, and the plurality of connecting rods are connected to the piston rod of a pneumatic telescopic rod via a sliding rod passing through the cover body.
[0006] As an improved technical solution, the lower end of the interior of the tank body is a conical stirring chamber, the stirring shaft is axially provided with several layers of stirring blades, the sizes of the several layers of stirring blades are adapted to the stirring chamber, and the discharge port is arranged at the lower part of the stirring chamber.
[0007] As an improved technical solution, a baffle is provided on the inner side of the cover body, and both side edges and the bottom edge of the baffle are arc-shaped.
[0008] As an improved technical solution, the connecting rod is provided with a scraper frame adapted to the baffle plate.
[0009] As an improved technical solution, a brush is provided on the inner side of the scraper frame.
[0010] As an improved technical solution, the connecting rod, the scraping sleeve and the sliding rod are all hollow, and the upper part of the sliding rod is connected to an air intake pipe;
[0011] The scraping sleeve is provided with a plurality of first blowing holes, and the connecting rod is provided with a plurality of second blowing holes.
[0012] As a preferred technical solution, a plurality of the first blowing holes are arranged on the outer side of the lower portion of the scraper sleeve, and a plurality of the second blowing holes are arranged on the outer side of the upper portion of the connecting rod.
[0013] As a preferred technical solution, a containing groove is provided on the inner side of the cover body, and the shape of the containing groove is adapted to the shape of the scraper.
[0014] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:
[0015] The utility model discloses a mixing tank for producing chlorinated polyvinyl chloride mixture, comprising a tank body and a cover body, wherein a stirring shaft is provided at the bottom of the tank body, wherein the lower end of the stirring shaft is connected to a motor via a belt, wherein a discharge port is provided at the lower part of the tank body, wherein a scraper is provided inside the tank body, wherein the scraper comprises a scraper sleeve which is arranged in an annular manner and adapted to the inner wall of the tank body, wherein a plurality of connecting rods are provided inside the scraper sleeve, wherein the plurality of connecting rods are connected to the piston rod of the pneumatic telescopic rod via a sliding rod passing through the cover body. When the mixing is completed, the stirring is stopped, and the sliding rod can be driven by the piston rod of the pneumatic telescopic rod to move vertically, thereby moving the entire scraper up and down, and then the scraper sleeve is used to scrape the material attached to the inner wall of the tank body, thereby greatly reducing the possibility of the material hanging on the inner wall of the tank body and accumulating, thereby improving the quality of the chlorinated polyvinyl chloride mixture product.
[0016] The lower end of the inner part of the tank body of the utility model is a conical stirring chamber, and the stirring shaft is provided with several layers of stirring blades along the axial direction, and the sizes of the several layers of stirring blades are adapted to the stirring chamber, and the discharge port is arranged at the lower part of the stirring chamber. The stirring blades adopt an upper and lower multi-layer design, and the shape of the blades fits the bottom of the tank body and the lower edge of the side wall, which can generate strong shear force and vortex during the stirring process, so that the materials are fully mixed.
[0017] The inner side of the cover is provided with a baffle, and both side edges and the bottom edge of the baffle are arc-shaped. The part in contact with the mixture has no sharp edges and corners, so as to ensure that the baffle plays a baffle role in the mixture while not causing excessive local shear force of the mixture to cause deformation of the baffle and affect its service life.
[0018] The connecting rod is provided with a scraper frame adapted to the baffle plate. As the scraper moves up and down, the scraper frame can scrape off the material attached to the outer side wall of the baffle plate to avoid accumulation of the material on the baffle plate.
[0019] A brush is provided on the inner side of the scraper frame, which has a better cleaning effect on the material attached to the outer side of the baffle.
[0020] The connecting rod, the scraping sleeve and the sliding rod are all hollow, and the upper part of the sliding rod is connected to an air inlet pipe; the scraping sleeve is provided with a plurality of first blowing holes, and the connecting rod is provided with a plurality of second blowing holes. On the basis of the scraping sleeve scraping the material on the inner wall of the tank body, the air outlet of the first blowing holes and the second blowing holes can blow away the attached material, and the cleaning effect is better.
[0021] A plurality of the first blowing holes are arranged on the lower outer side of the scraper sleeve, and a plurality of the second blowing holes are arranged on the upper outer side of the connecting rod. The first blowing holes and the second blowing holes arranged up and down can realize cross-blowing of the inner wall of the tank body, and the material cleaning effect is better.
[0022] The inner side of the cover body is provided with a receiving groove, the shape of which is adapted to the shape of the scraper. When not in use, the scraper can be recovered into the receiving groove to prevent materials from adhering to the scraper. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0024] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;
[0025] Figure 2 It is a cross-sectional view of an embodiment of the utility model;
[0026] Figure 3 yes Figure 2 Schematic diagram of the structure of the middle scraper;
[0027] Figure 4 yes Figure 2 A schematic diagram of the structure of the middle cover body;
[0028] Figure 5 yes Figure 2 Schematic diagram of the structure of the stirring shaft;
[0029] Wherein: 1. tank body; 2. cover body; 3. stirring shaft; 4. belt; 5. motor; 6. discharge port; 7. scraper; 8. scraper sleeve; 9. connecting rod; 10. slide rod; 11. pneumatic telescopic rod; 12. piston rod; 13. stirring chamber; 14. stirring blade; 15. baffle; 16. scraper frame; 17. brush; 18. air inlet pipe; 19. first blowing hole; 20. second blowing hole; 21. accommodating groove; 22. base. DETAILED DESCRIPTION
[0030] The present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0031] like Figure 1-5 As shown, a mixing tank for the production of chlorinated polyvinyl chloride mixture includes a tank body 1 and a cover body 2. The bottom of the tank body 1 is provided with a base 22. The bottom of the tank body 1 is provided with a stirring shaft 3. The lower end of the stirring shaft 3 is connected to a motor 5 through a belt 4. The lower part of the tank body 1 is provided with a discharge port 6. The inside of the tank body 1 is provided with a scraper 7. The scraper 7 includes a scraper sleeve 8 arranged in an annular manner and adapted to the inner wall of the tank body 1. The scraper sleeve 8 is provided with a plurality of connecting rods 9. The plurality of connecting rods 9 are connected to the piston rod 12 of the pneumatic telescopic rod 11 through the sliding rod 10 passing through the cover body 2. After the mixing is completed, the stirring is stopped. The sliding rod 10 can be driven by the piston rod 12 of the pneumatic telescopic rod 11 to move vertically, so that the entire scraper 7 moves up and down, and then the scraper sleeve 8 is used to scrape the material attached to the inner wall of the tank body 1, which greatly reduces the possibility of the material hanging on the inner wall of the tank body 1 and accumulating, thereby improving the quality of the chlorinated polyvinyl chloride mixture product.
[0032] In this embodiment, the lower end of the interior of the tank body 1 is a conical stirring chamber 13, and the upper part is a cylindrical cavity. The height of the stirring shaft 3 is adapted to the height of the stirring chamber 13. The stirring shaft 3 is provided with several layers of stirring blades 14 along the axial direction. The sizes of the several layers of stirring blades 14 are adapted to the stirring chamber 13. The discharge port 6 is arranged at the lower part of the stirring chamber 13. The stirring blades 14 are designed with multiple layers up and down. The shape of the blades fits the bottom of the tank body 1 and the lower edge of the side wall, and can generate strong shear force and vortex during the stirring process to fully mix the materials.
[0033] A baffle 15 is provided on the inner side of the cover 2, and the lower end of the baffle 15 is located at the upper part of the mixing chamber 13. Both sides and the bottom of the baffle 15 are arc-shaped. The part in contact with the mixed material has no sharp edges and corners, ensuring that the baffle 15 plays a baffle role in the mixed material while not causing the local shear force of the mixed material to be too large to cause the baffle 15 to deform and affect its service life.
[0034] The connecting rod 9 is provided with a scraper frame 16 adapted to the baffle 15 . As the scraper 7 moves up and down, the scraper frame 16 can scrape off the material attached to the outer wall of the baffle 15 to avoid accumulation of the material on the baffle 15 .
[0035] A brush 17 is provided on the inner side of the scraper frame 16 to better clean the material attached to the outer side of the baffle 15 .
[0036] The connecting rod 9, the scraping sleeve 8 and the sliding rod 10 are all hollow, and the upper part of the sliding rod 10 is connected to an air inlet pipe 18; the scraping sleeve 8 is provided with a plurality of first blowing holes 19, and the connecting rod 9 is provided with a plurality of second blowing holes 20. On the basis of the scraping sleeve 8 scraping the inner wall of the tank body 1, the air outlet of the first blowing holes 19 and the second blowing holes 20 can blow away the attached materials, and the cleaning effect is better.
[0037] A plurality of the first blowing holes 19 are arranged on the lower outer side of the scraper sleeve 8, and a plurality of the second blowing holes 20 are arranged on the upper outer side of the connecting rod 9. The first blowing holes 19 and the second blowing holes 20 arranged up and down can realize cross-blowing of the inner wall of the tank body 1, and the material cleaning effect is better.
[0038] The inner side of the cover body 2 is provided with a receiving groove 21, and the shape of the receiving groove 21 is adapted to the shape of the scraper 7. When not in use, the scraper 7 can be recovered into the receiving groove 21 to prevent the material from adhering to the scraper 7. When the piston rod 12 moves to the lowermost end, the lower edge of the scraper sleeve 8 is located at the upper part of the conical stirring chamber 13.
[0039] The working principle of this utility model:
[0040] After the mixed material is stirred, the discharge port 6 is opened, and the material is discharged from the mixing tank while stirring until the discharge is completed and the stirring is stopped.
[0041] Then the piston rod 12 of the pneumatic telescopic rod 11 descends and rises at a uniform speed, and at the same time, the air inlet pipe 18 supplies air, and the gas overflows from the first blowing hole 19 and the second blowing hole 20 and cleans the wall residues and attached materials on the side wall of the tank body 1 and the bottom of the cover body 2. After the piston rod 12 of the pneumatic telescopic rod 11 descends and rises 3-5 times, stirring is turned on, and the material is discharged again. The stirring is turned off, and the piston rod 12 of the pneumatic telescopic rod 11 descends and rises 1-2 times again, stirring is turned on, and the material is discharged again, and the cleaning is completed.
[0042] It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.
Claims
1. A mixing tank for the production of chlorinated polyvinyl chloride mixture, comprising a tank body and a cover body, a stirring shaft is provided at the bottom of the tank body, a motor is connected to the lower end of the stirring shaft through a belt, and a discharge port is provided at the lower part of the tank body, characterized in that: A scraper is arranged inside the tank body, and the scraper comprises a scraper sleeve which is arranged in an annular shape and adapted to the inner wall of the tank body. A plurality of connecting rods are arranged inside the scraper sleeve, and the plurality of connecting rods are connected to the piston rod of the pneumatic telescopic rod through a sliding rod passing through the cover body.
2. A mixing tank for producing chlorinated polyvinyl chloride mixture as claimed in claim 1, characterized in that: The lower end of the tank body is a conical stirring chamber. The stirring shaft is provided with a plurality of stirring blades along the axial direction. The sizes of the plurality of stirring blades are adapted to the stirring chamber. The discharge port is provided at the lower part of the stirring chamber.
3. A mixing tank for producing chlorinated polyvinyl chloride mixture as claimed in claim 1, characterized in that: A baffle is provided on the inner side of the cover body, and both side edges and the bottom edge of the baffle are arc-shaped.
4. A mixing tank for producing chlorinated polyvinyl chloride mixture as claimed in claim 3, characterized in that: The connecting rod is provided with a scraper frame adapted to the baffle plate.
5. A mixing tank for producing chlorinated polyvinyl chloride mixture as claimed in claim 4, characterized in that: A brush is arranged on the inner side of the scraper frame.
6. A mixing tank for producing chlorinated polyvinyl chloride mixture as claimed in claim 1, characterized in that: The connecting rod, the scraping sleeve and the sliding rod are all hollow, and the upper part of the sliding rod is connected to an air intake pipe; The scraping sleeve is provided with a plurality of first blowing holes, and the connecting rod is provided with a plurality of second blowing holes.
7. A mixing tank for producing chlorinated polyvinyl chloride mixture as claimed in claim 6, characterized in that: A plurality of the first blowing holes are arranged on the outer side of the lower part of the scraper sleeve, and a plurality of the second blowing holes are arranged on the outer side of the upper part of the connecting rod.
8. A mixing tank for producing chlorinated polyvinyl chloride mixture as claimed in claim 1, characterized in that: An accommodating groove is provided on the inner side of the cover body, and the shape of the accommodating groove is adapted to the shape of the scraper.