Adding and mixing device of composite initiator for PVC (polyvinyl chloride) production
By designing a hybrid device that includes a composite cause of PVC production of mixing mixing tanks, dish pipes, raw pipes, driving motors and electromagnets, solves the problem of incompleteness and poor mixing effects. The efficient and accurate raw materials are added and stirred, and the quality and production efficiency of finished products are improved.
Patent Information
- Application Number
- CN202420556407.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-21
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-03-21
AI Technical Summary
In the existing PVC production equipment, the addition of composite initiators is not accurate enough and the mixing effect is poor, resulting in the inability to guarantee the quality of the finished product.
Design a mixed device for PVC production composite cause, including mixing mixing tanks, native pipes, raw pipes, driving motors, and electromagnets. , And make efficient stirring through the stirring rod of the staggered and staggered stirring.
The accurate addition of the composite cause and the fully stirring of the mixture, improved the quality and production efficiency of the finished product, and simplified the operation process.
Smart Images
Figure CN222401296U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of PVC production equipment, and in particular relates to a composite initiator adding and mixing device for PVC production. Background Art
[0002] PVC is a polymer formed by the free radical polymerization mechanism of vinyl chloride monomer in the presence of initiators such as peroxides and azo compounds or under the action of light or heat. PVC is an amorphous white powder with a small degree of branching. It will decompose at temperatures above 100°C or after long-term exposure to sunlight to produce hydrogen chloride, and further autocatalytically decompose, causing discoloration and a rapid decline in physical and mechanical properties. In practical applications, stabilizers must be added to improve stability to heat and light.
[0003] During the production process of PVC, a corresponding adding device is needed to add the corresponding composite initiator to the mixer for PVC production. Although the existing adding device can convey and add the composite initiator, it requires manual addition, which will lead to inaccurate dosage and the quality of the finished product cannot be guaranteed. At the same time, the existing adding device is not very effective in mixing and cannot completely stir the mixture. For this reason, we propose an adding and mixing device for composite initiators for PVC production. Summary of the invention
[0004] In view of the deficiencies in the prior art, the utility model aims to provide a device for adding and mixing a composite initiator for PVC production, which solves the problems of accuracy in adding the composite initiator and insufficient stirring of the mixture.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a device for adding and mixing a composite initiator for PVC production, comprising a first support frame, a second support frame is fixedly connected to the lower part of the first support frame, a collecting tank is arranged inside the second support frame, a mixing and stirring tank is fixedly connected to the interior of the first support frame, two valve housings are arranged on the upper part of the mixing and stirring tank, a feed pipe is fixedly connected to the upper part of the two valve housings, a PVC addition port is arranged on the top of the mixing and stirring tank, an initiator addition port is arranged on the top of the mixing and stirring tank, the output ends of the PVC addition port and the initiator addition port are both connected to the top of the feed pipe, and a fixed A ring, the upper part of the fixed ring is fixedly connected to a driving motor, the transmission shaft of the driving motor movably passes through the fixed ring and the interior of the mixing tank and is fixedly connected to a stirring frame, the outer side of the stirring frame is provided with a stirring rod, the outer side of the stirring frame is provided with a connecting rod, the lower part of the mixing tank is connected to a discharge pipe, a control valve is installed on the discharge pipe, the lower part of the discharge pipe passes through the interior of the collecting tank, the inner wall of the valve housing is fixedly connected to a spring, one end of the spring is provided with a baffle, one side of the baffle is fixedly connected to a shaft rod, two valve cores are fixedly connected and passed through the shaft rod, the other end of the shaft rod is fixedly connected to an electromagnet, and a magnetic block is provided on the inner wall of the valve housing close to the electromagnet.
[0006] Preferably, a plurality of stirring rods are disposed on the outer side of the stirring frame, and the stirring rods are arranged in a rectangular array and in a staggered manner.
[0007] The above technical solution has the advantage that the torque of the stirring frame is stable, which is convenient for rotation and stirring, and the structure is stable and the whole is stable.
[0008] Preferably, a heating wire is provided inside the stirring rod.
[0009] The above technical solution has the advantages of providing heat while stirring, saving stirring time and improving production efficiency.
[0010] Preferably, a scraper is provided at one end of the connecting rod, and the height of the scraper is smaller than the height of the mixing tank.
[0011] The above technical solution has the advantage that the inner wall of the mixing tank can be cleaned by the provided scraper, thereby preventing the composite initiator and PVC from adhering to the inner wall of the mixing tank during processing.
[0012] Preferably, a card slot is provided on the upper side of the inner wall of the mixing tank, and the card slot is located around the top of the inner side of the mixing tank. The card block corresponds to the position of the card slot, and the size of the card block is smaller than the size of the card slot.
[0013] The adoption of the above technical solution has the advantage that during the processing, when the scraper rotates, it can move along the slot without resistance, so as to facilitate cleaning of the inner wall of the mixing tank.
[0014] Preferably, two discharge holes are opened on the upper part of the mixing tank, the diameter of the discharge holes matches the side width of the valve core, the diameter of the feed pipe matches the side width of the valve core, and the top end of the discharge hole is connected to the inner side of the valve housing.
[0015] By adopting the above technical solution, the advantage is that during processing, the valve core moves, allowing the material to fall directly into the mixing tank, simplifying the steps of adding materials and facilitating operation.
[0016] Compared with the prior art, the beneficial effects of the utility model are:
[0017] 1. Through the electromagnet, during processing, the worker energizes the electromagnet to generate a repulsive force between the electromagnet and the magnetic block. The repulsive force causes the electromagnet to drive the shaft to move, and the movement of the shaft drives the movement of the valve core, thereby opening the gap between the discharge hole and the feed pipe. PVC and mixed initiator can be added to the mixing tank at the bottom. When the power is off, the repulsive force disappears, and the elastic force generated by the spring returning to its original state pushes the valve core back to its original position, filling the gap between the discharge hole and the feed pipe, which is convenient for controlling the metering of the added objects, making the reaction metering accurate and improving the output rate.
[0018] 2. By setting up a rectangular array of stirring rods arranged in a staggered manner, during processing, after the stirring frame is started, the stirring rods can stir and mix more effectively, reducing the operation time while also improving the stirring effect.
[0019] 3. By setting the scraper and the clamping block, the scraper can slide in the clamping groove through the clamping block while being connected with the connecting rod, thereby improving the cleaning efficiency and ensuring the stability of the structure. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a schematic diagram of the front appearance structure of the utility model;
[0021] Figure 2 This is a schematic diagram of the internal structure of the mixing and stirring tank of the utility model;
[0022] Figure 3 For the utility model Figure 2 A partial cross-section diagram of the internal structure at center A;
[0023] Figure 4 For the utility model Figure 1 Schematic diagram of the internal structure with partial section view at point B in the middle.
[0024] In the figure: 1. first support frame; 2. second support frame; 3. mixing and stirring tank; 4. collecting tank; 5. discharge pipe; 6. control valve; 7. driving motor; 8. PVC addition port; 9. initiator addition port; 10. stirring frame; 11. stirring rod; 12. connecting rod; 13. scraper; 14. slot; 15. block; 16. valve housing; 17. heating wire; 18. spring; 19. discharge hole; 20. valve core; 21. shaft; 22. fixing ring; 23. feed pipe; 24. electromagnet; 25. magnetic block; 26. baffle. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the implementation scheme of the utility model to clearly and completely describe the technical scheme in the implementation scheme of the utility model. Obviously, the described implementation scheme is only a part of the implementation scheme of the utility model, not all the implementation schemes. Based on the implementation scheme in the utility model, all other implementation schemes obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.
[0026] like Figure 1-Figure 4 As shown, a composite initiator adding and mixing device for PVC production comprises a first support frame 1, a second support frame 2 is fixedly connected to the lower part of the first support frame 1, a collecting tank 4 is arranged inside the second support frame 2, a mixing and stirring tank 3 is fixedly connected to the inside of the first support frame 1, two valve housings 16 are arranged on the upper part of the mixing and stirring tank 3, a feed pipe 23 is fixedly connected to the upper part of the two valve housings 16, a PVC adding port 8 is arranged on the top of the mixing and stirring tank 3, an initiator adding port 9 is arranged on the top of the mixing and stirring tank 3, the output ends of the PVC adding port 8 and the initiator adding port 9 are both connected to the top of the feed pipe 23, a fixing ring 22 is fixedly connected to the upper part of the mixing and stirring tank 3, and a fixing ring 22 is fixedly connected to the upper part of the fixing ring 22. A driving motor 7, a transmission shaft of the driving motor 7 movably passes through the interior of the fixed collar 22 and the mixing tank 3 and is fixedly connected to a stirring frame 10, a stirring rod 11 is provided on the outside of the mixing frame 10, a connecting rod 12 is provided on the outside of the mixing tank 10, a discharge pipe 5 is connected to the lower part of the mixing tank 3, a control valve 6 is installed on the discharge pipe 5, the lower part of the discharge pipe 5 passes through the interior of the collecting tank 4, a spring 18 is fixedly connected to the inner wall of the valve housing 16, a baffle 26 is provided at one end of the spring 18, a shaft rod 21 is fixedly connected to one side of the baffle 26, two valve cores 20 are fixedly connected and pass through the shaft rod 21, an electromagnet 24 is fixedly connected to the other end of the shaft rod 21, and a magnetic block 25 is provided on the inner wall of the valve housing 16 close to the electromagnet 24.
[0027] The working principle of the above technical solution is as follows: when in use, the electromagnet 24 is energized so that the electromagnet 24 generates a mutual repulsion force with the magnetic block 25 under the action of the current, thereby driving the shaft 21 and the baffle 26 to squeeze the spring 18 inside the valve housing 16, and the shaft 21 moves, so that the position of the valve core 20 connected thereto also changes. After the valve core 20 moves, the feed pipe 23 is unblocked, so that the raw materials assembled in the feeding port at the upper part of the feed pipe 23 enter the mixing tank 3 through the feed pipe 23 and the discharge hole 19. After adding an appropriate amount of raw materials, the power is turned off, the mutual repulsion between the electromagnet 24 and the magnetic block 25 disappears, and the spring 18 loses pressure and starts to rebound, so that the shaft 21 drives the valve core 20 to move to the initial position, blocking the feed pipe 23 and the discharge hole 19. The drive motor 7 is set to start operating after the PVC and the composite initiator enter the mixing tank 3, so that the drive motor 7 drives the stirring frame 10 to start rotating, and the stirring rod 11 fixedly connected to the stirring frame 10 also starts to operate. The speed of the stirring rod 11 can be adjusted by controlling the drive motor 7, thereby speeding up or slowing down the stirring rate. When the mixing tank 3 completes the operation, the drive motor 7 works, the stirring frame 10 inside the mixing tank 3 stops operating, and then the lower control valve 6 is opened, so that the mixed materials enter the collection tank 4 below along the discharge pipe 5, which is convenient for collecting materials and avoiding waste.
[0028] In another embodiment, Figure 2 As shown, a plurality of stirring rods 11 are disposed on the outer side of the stirring frame 10 , and the stirring rods 11 are arranged in a rectangular array and in a staggered manner.
[0029] The multiple stirring rods 11 arranged in a staggered manner can achieve more effective stirring during the processing, thereby increasing the stirring efficiency.
[0030] In another embodiment, Figure 2-Figure 3 As shown, a heating wire 17 is arranged inside the stirring rod 11 .
[0031] Through the electric heating wire 17, during the processing, the temperature of the processing environment can be appropriately increased through the electric heating wire 17, which is convenient for production and can effectively improve the processing efficiency.
[0032] In another embodiment, Figure 2-Figure 3 As shown, a scraper 13 is provided at one end of the connecting rod 12 away from the stirring frame 10 , and the height of the scraper 13 is less than the height of the mixing tank 3 .
[0033] The height of the scraper 13 is such that it can cover the entire inner wall of the mixing tank 3 during use. The scraper 13 can clean the initiator attached to the inner wall of the mixing tank 3 during stirring to avoid incomplete stirring.
[0034] In another embodiment, Figure 3As shown, a slot 14 is provided on the upper side of the inner wall of the mixing tank 3 , and the slot 14 is located around the top of the inner side of the mixing tank 3 . The block 15 corresponds to the position of the slot 14 , and the size of the block 15 is adapted to that of the slot 14 .
[0035] During the processing, the scraper 13 can move along the track of the slot 14 through the provided clamping block 15 . The scraper 13 can operate more stably under the action of the connecting rod 12 and the slot 14 , thereby improving the stability of the scraper 13 .
[0036] In another embodiment, Figure 4 As shown, two discharge holes 19 are opened on the upper part of the mixing tank 3, the diameter of the discharge hole 19 is consistent with the side width of the valve core 20, the diameter of the feed pipe 23 is consistent with the side width of the valve core 20, and the spacing of the valve core 20 is consistent with the diameter of the feed pipe 23.
[0037] The size of the valve core 20 is consistent with the size of the discharge hole 19 and the feed pipe 23, so as to ensure that the material will not enter the mixing tank 3 due to the vibration of the machine when no feeding is needed, and the distance between the two valve cores 20 is consistent with the size of the feed pipe 23 and the discharge hole 19, so that when feeding, the material can directly enter the mixing tank 3 without hindrance. At the same time, after the power is turned off, the position of the valve core 20 moves, and the residual material in the valve housing 16 is stored in the two valve cores 20, ensuring the long-term performance of the valve housing 16.
[0038] The working principle and use process of the utility model: when in use, the electromagnet 24 is energized so that the electromagnet 24 generates a mutual repulsion force with the magnetic block 25 under the action of the current, thereby driving the shaft rod 21 and the baffle 26 to squeeze the spring 18 inside the valve housing 16, and the shaft rod 21 moves, so that the position of the valve core 20 connected thereto also changes. After the valve core 20 moves, the feed pipe 23 loses its obstruction, so that the raw materials assembled in the feeding port at the upper part of the feed pipe 23 enter the mixing tank 3 through the feed pipe 23 and the discharge hole 19. After adding an appropriate amount of raw materials, stop energizing, the mutual repulsion force between the electromagnet 24 and the magnetic block 25 disappears, the spring 18 loses pressure and starts to rebound, so that the shaft rod 21 drives the valve core 20 to move to the initial position, blocking the feed pipe 23 and the discharge hole 19. The drive motor 7 is set to start operating after the PVC and the composite initiator enter the mixing tank 3, so that the drive motor 7 drives the stirring frame 10 to start rotating, and the stirring rod 11 fixedly connected to the stirring frame 10 also starts to operate. The speed of the stirring rod 11 can be adjusted by controlling the drive motor 7, thereby speeding up or slowing down the stirring rate. When the mixing tank 3 completes the operation, the drive motor 7 works, the stirring frame 10 inside the mixing tank 3 stops operating, and then the lower control valve 6 is opened, so that the mixed materials enter the collection tank 4 below along the discharge pipe 5, which is convenient for collecting materials and avoiding waste.
[0039] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A device for adding and mixing a composite initiator for PVC production, comprising a first support frame (1), characterized in that: The lower part of the first support frame (1) is fixedly connected to the second support frame (2), the interior of the second support frame (2) is provided with a collecting tank (4), the interior of the first support frame (1) is fixedly connected to a mixing and stirring tank (3), the upper part of the mixing and stirring tank (3) is provided with two valve housings (16), the upper parts of the two valve housings (16) are fixedly connected to a feed pipe (23), the top of the mixing and stirring tank (3) is provided with a PVC addition port (8), the top of the mixing and stirring tank (3) is provided with an initiator addition port (9), the PVC addition port (8) The output ends of the initiator addition port (9) are both connected to the top of the feed pipe (23); the upper part of the mixing and stirring tank (3) is fixedly connected to a fixed collar (22); the upper part of the fixed collar (22) is fixedly connected to a drive motor (7); the transmission shaft of the drive motor (7) movably passes through the fixed collar (22) and the interior of the mixing and stirring tank (3) and is fixedly connected to a stirring frame (10); the outer side of the stirring frame (10) is provided with a stirring rod (11); the outer side of the stirring frame (10) is provided with a connecting rod (12); the lower part of the mixing and stirring tank (3) is connected to a discharge pipe (5), a control valve (6) is installed on the discharge pipe (5), the lower part of the discharge pipe (5) passes through the interior of the collection tank (4), a spring (18) is fixedly connected to the inner wall of the valve housing (16), a baffle (26) is provided at one end of the spring (18), a shaft (21) is fixedly connected to one side of the baffle (26), two valve cores (20) are fixedly connected and pass through the shaft (21), the other end of the shaft (21) is fixedly connected to an electromagnet (24), and a magnetic block (25) is provided on the inner wall of the valve housing (16) near the electromagnet (24).
2. The device for adding and mixing a composite initiator for PVC production according to claim 1, characterized in that: A plurality of stirring rods (11) are arranged on the outside of the stirring frame (10), and the stirring rods (11) are evenly arranged on the outside of the stirring frame (10) in a circular spiral array.
3. The device for adding and mixing a composite initiator for PVC production according to claim 1, characterized in that: A heating wire (17) is arranged inside the stirring rod (11).
4. The device for adding and mixing a composite initiator for PVC production according to claim 1, characterized in that: A scraper (13) is provided at one end of the connecting rod (12) away from the stirring frame (10), and the height of the scraper (13) is less than the height of the mixing and stirring tank (3).
5. The device for adding and mixing a composite initiator for PVC production according to claim 4, characterized in that: A slot (14) is provided on the upper side of the inner wall of the mixing and stirring tank (3), the slot (14) being located around the top of the inner side of the mixing and stirring tank (3), a block (15) being fixedly connected to the upper part of the scraper (13), the block (15) corresponding to the position of the slot (14), and the size of the block (15) and the slot (14) being compatible.
6. The device for adding and mixing a composite initiator for PVC production according to claim 1, characterized in that: The mixing tank (3) has two discharge holes (19) formed on its upper portion. The diameter of the discharge holes (19) matches the side width of the valve core (20). The diameter of the feed pipe (23) matches the side width of the valve core (20). The spacing of the valve core (20) matches the specification size of the feed pipe (23). The top end of the discharge hole (19) is connected to the inner side of the valve housing (16).