Polycarboxylate superplasticizer mother liquor synthesis device

Abstract

Belonging to the technical field of polycarboxylate superplasticizer production, the invention discloses a polycarboxylate superplasticizer mother liquor synthesis device, which comprises a mixing barrel main body, the top of the mixing barrel main body is fixedly connected with a second support frame through bolts, the top of the second support frame is buckled with a batching barrel, the outer side of the mixing barrel main body is fixedly connected with a first support frame, and the first support frame is buckled with the batching barrel. The top of the first supporting frame is provided with a driving mechanism used in cooperation with the movable plate. Different raw materials are fed through a plurality of groups of first feeding pipes at the top of the batching barrel, a first motor is started, power is transmitted to a first stirring rod through a first driving gear, a first driven gear, a connecting rod and a transmission wheel assembly, primary homogenization of the raw materials before the raw materials enter a mixing barrel main body is achieved, and premixed liquid is quantitatively injected into the mixing barrel main body through a feeding opening; in the using process, the volume of liquid injected into the mixing barrel body every time can be constant by controlling the displacement stroke of the piston block according to actual using requirements, and the proportion of needed raw materials is accurately controlled.

Description

Technical Field

[0001] This invention belongs to the field of polycarboxylate superplasticizer production technology, specifically a polycarboxylate superplasticizer mother liquor synthesis device. Background Technology

[0002] As an indispensable admixture for high-performance concrete, polycarboxylate superplasticizer plays a decisive role in the quality of its mother liquor synthesis, which affects the water reduction rate, slump retention, and other properties of concrete. With the continuous improvement of the construction industry's requirements for concrete performance, the synthesis technology of polycarboxylate superplasticizer mother liquor is also developing, and the related synthesis equipment has become a focus of industry attention.

[0003] A polycarboxylate superplasticizer mother liquor synthesis device typically includes a raw material storage and transportation section, such as storage tanks, pipelines, and metering pumps, for storing and transporting various raw materials; a reaction vessel as the core reaction container, providing space for the raw material reaction; a stirring system that promotes uniform mixing of materials through different types of stirrers; and a heating and temperature control system, such as heating rods and temperature controllers, for regulating the reaction temperature.

[0004] Currently, most existing polycarboxylate superplasticizer mother liquor synthesis devices adopt the traditional reactor structure, which has the following shortcomings: Poor raw material proportioning accuracy: The unsaturated monomers, initiators, chain transfer agents and other raw materials required for the production of polycarboxylate superplasticizer mother liquor are stored in corresponding raw material storage tanks. The amount of each raw material is determined by manual weighing. Then, the raw materials are transported to the reaction vessel by means of conveying pipelines and simple valve control. This process depends on manual operation and the accuracy is greatly affected by human factors. Poor mixing effect: In the mixing process, the structural design of traditional stirrers often fails to achieve sufficient and uniform mixing of materials, resulting in dead zones in the mixing process, which leads to incomplete reaction and reduces the conversion rate of mother liquor synthesis and product quality. Summary of the Invention

[0005] To overcome the above-mentioned defects, the present invention provides a polycarboxylate superplasticizer mother liquor synthesis device, which solves the problems of poor raw material ratio accuracy and poor stirring and mixing effect in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a polycarboxylate superplasticizer mother liquor synthesis device, comprising a mixing tank body, a second support frame fixedly connected to the top of the mixing tank body by bolts, a batching tank being snapped onto the top of the second support frame, a plurality of first feed pipes being connected to the top of the batching tank, a first stirring rod being rotatably connected inside the batching tank, the end of the first stirring rod penetrating the top of the batching tank, a suction pipe being fixedly connected to one side of the first stirring rod inside the batching tank, a first motor being installed on the top of the mixing tank body, a first drive gear being coaxially fixedly connected to the output end of the first motor, a first driven gear being meshed with one side of the first drive gear, a connecting rod being fixedly connected to the top of the first driven gear, and a transmission wheel assembly being connected to the top of the connecting rod and the first stirring rod. The other end of the extraction pipe is connected to a distribution cylinder, which is a three-way pipe structure. A piston block is movably connected to one side of the distribution cylinder, and a movable rod is fixedly connected to the outside of the piston block. The movable rod movably passes through one end of the distribution cylinder. An inlet is connected to the distribution cylinder away from the opening of the extraction pipe. The opening of the inlet is located inside the main body of the mixing tank. The extraction pipe and the inlet are symmetrical. The piston block and the movable rod are located in the middle of the extraction pipe and the inlet. Multiple sets of fixing rings are provided inside the distribution cylinder. A blocking block is slidably connected to the bottom of the fixing ring. A movable plate is fixedly connected to the other end of the movable rod. A first support frame is fixedly connected to the outside of the main body of the mixing tank. A drive mechanism that works with the movable plate is installed on the top of the first support frame.

[0007] As a further embodiment of the present invention: the driving mechanism includes a second motor, and a lead screw is coaxially fixedly connected to the output end of the second motor. The lead screw is threaded through the movable plate. The movable plate has an L-shaped structure. A protective frame is connected to the top of the first support frame. The second motor and the lead screw are located inside the protective frame, and a slot is provided on the top of the protective frame to cooperate with the movable plate.

[0008] As a further aspect of the present invention: a partition is snapped onto the upper part of the mixing tank body, a second drive gear is rotatably connected to the top of the partition, a connecting shaft is coaxially fixedly connected between the second drive gear and the first drive gear, a second driven gear is meshed with one side of the second drive gear, the second driven gear is rotatably connected to the partition, and a disturbance rod is fixedly connected to the bottom of the second driven gear, the disturbance rod is located inside the mixing tank body, and the outer side of the disturbance rod is in contact with the feed inlet opening.

[0009] As a further aspect of the present invention: a second stirring rod is fixedly connected to the top of the second drive gear, the disturbance rod is located above the second stirring rod, and both the first stirring rod and the second stirring rod are spiral structures.

[0010] As a further embodiment of the present invention: a second feed pipe and an air inlet pipe are respectively connected to the outer side of the mixing tank body, a discharge pipe for use with the second feed pipe is opened at the bottom of the mixing tank body, and a liquid discharge pipe for use with the air inlet pipe is provided at the bottom of the mixing tank body on one side of the discharge pipe, and the mixing tank body has a double-layer structure.

[0011] As a further embodiment of the present invention: a cross-shaped fixing rod is provided at the top of the fixing ring, and a spring is fixedly connected between the fixing rod and the block; a protective shell for use with the first driving gear and the first driven gear is installed on the top of the mixing tank body; a dustproof shell for use with the transmission wheel assembly is provided on the top of the mixing tank body; and a support leg is fixedly connected to the outside of the mixing tank body, and the support leg has a ring structure.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention connects different raw materials to multiple sets of first feed pipes at the top of the mixing tank. The first motor is started, and power is transmitted to the first stirring rod via the first driving gear, first driven gear, connecting rod, and transmission wheel assembly. This achieves preliminary homogenization of the raw materials before they enter the mixing tank body. The driving mechanism moves the movable plate backward, and the piston block moves away from the extraction pipe in the distribution cylinder via the movable rod. At this time, a negative pressure is formed in the distribution cylinder, the blockage on the extraction pipe side is sucked up, and the blockage on the inlet side closes due to the pressure difference. The premixed liquid in the mixing tank enters the distribution cylinder through the extraction pipe. The driving mechanism pushes the extraction pipe in front of the movable plate to move, increasing the pressure in the distribution cylinder. The blockage on the extraction pipe side closes, and the blockage on the inlet side is pushed open. The premixed liquid is quantitatively injected into the mixing tank body through the inlet. During use, the displacement of the piston block can be controlled according to actual needs to ensure a constant liquid volume injected into the mixing tank body each time, thus precisely controlling the required raw material ratio. 2. This invention uses a threaded drive to move the movable plate linearly, which can precisely control the stroke of the piston block. The protective frame completely encloses the second motor and the lead screw, and its top slot only allows the movable plate to pass through, effectively preventing liquid splashing and dust intrusion. The cooperation between the second motor and the lead screw allows for precise control of the movable plate's movement distance, thereby achieving the effect of quantitative material feeding and discharging. The protective frame not only protects the second motor and the lead screw but also guides and limits the movement of the movable plate. The partition not only supports the second drive gear and the second driven gear but also isolates them, preventing them from being affected by the liquid inside the mixing tank. At the same time, the second driven gear drives the agitator to rotate and stir inside the mixing tank, further agitating the mixed ingredients discharged from the inlet, quickly breaking down their structure, and allowing the mixed ingredients to quickly mix with the raw materials inside the mixing tank. Attached Figure Description

[0013] Figure 1 This is a first-view schematic diagram of the overall structure of the present invention; Figure 2 This is a second-view schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the structure of the present invention with the protective shell removed; Figure 4 This is a first-view schematic diagram of the cross-sectional structure of the present invention; Figure 5 This is a second-view schematic diagram of the cross-sectional structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of a portion of point A in the middle; Figure 7 This is a schematic diagram showing the cross-sectional effect of the main structure of the present invention.

[0014] In the diagram: 1. Mixing tank body; 2. Support leg; 3. First motor; 4. Batching tank; 5. Distributor cylinder; 6. First support frame; 7. Second support frame; 8. Protective frame; 9. Extraction pipe; 10. First feed pipe; 11. Second feed pipe; 12. Air inlet pipe; 13. Discharge pipe; 14. Liquid drain pipe; 15. Movable plate; 16. First drive gear; 17. First driven gear; 18. Connecting rod; 19. Transmission wheel assembly; 20. Second motor; 21. Lead screw; 22. First stirring rod; 23. Fixed ring; 24. Piston block; 25. Movable rod; 26. Block; 27. Second drive gear; 28. Second driven gear; 29. ​​Disturbance rod; 30. Second stirring rod; 31. Feed inlet; 32. Fixed rod; 33. Spring; 34. Partition plate. Detailed Implementation

[0015] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0016] like Figures 1-7 As shown, the present invention provides a technical solution: A polycarboxylate superplasticizer mother liquor synthesis device includes a mixing tank body 1. A second support frame 7 is bolted to the top of the mixing tank body 1. A batching tank 4 is snapped onto the top of the second support frame 7. Multiple sets of first feed pipes 10 are connected to the top of the batching tank 4. A first stirring rod 22 is rotatably connected inside the batching tank 4 to facilitate the pre-mixing of multiple raw materials, reduce the workload of the mixing tank body 1, shorten the overall mixing time, and improve production efficiency. The end of the first stirring rod 22 penetrates the top of the batching tank 4. A suction pipe 9 is fixedly connected to one side of the first stirring rod 22 inside the batching tank 4. A first motor 3 is installed on the top of the mixing tank body 1. A first drive gear 16 is coaxially fixedly connected to the output end of the first motor 3. A first driven gear 17 is meshed with one side of the first drive gear 16. A connecting rod 18 is fixedly connected to the top of the first driven gear 17. A transmission wheel assembly 19 is connected to the top of the connecting rod 18 and the first stirring rod 22. The other end of the extraction pipe 9 is connected to the distribution cylinder 5, which is a three-way pipe structure. A piston block 24 is movably connected to one side of the distribution cylinder 5. A movable rod 25 is fixedly connected to the outside of the piston block 24. The movable rod 25 moves through one end of the distribution cylinder 5. The distribution cylinder 5 is connected to the inlet 31 at the pipe opening away from the extraction pipe 9. The opening of the inlet 31 is located inside the mixing tank body 1. The extraction pipe 9 and the inlet 31 are symmetrical. The piston block 24 and the movable rod 25 are located in the middle of the extraction pipe 9 and the inlet 31. Multiple sets of fixed rings 23 are provided inside the distribution cylinder 5. The bottom of the fixed rings 23 is slidably connected to the block 26. The other end of the movable rod 25 is fixedly connected to the movable plate 15. A first support frame 6 is fixedly connected to the outside of the mixing tank body 1. A drive mechanism that works with the movable plate 15 is installed on the top of the first support frame 6. The drive mechanism can dynamically adjust the piston stroke according to production needs to adapt to the ingredient requirements of different formulas. Specifically, different raw materials are fed through multiple sets of first feed pipes 10 at the top of the mixing tank 4. The first motor 3 is started, and the power is transmitted to the first stirring rod 22 through the first drive gear 16, the first driven gear 17, the connecting rod 18, and the transmission wheel assembly 19, achieving preliminary homogenization of the raw materials before they enter the mixing tank body 1. The drive mechanism drives the movable plate 15 to move backward, and through the movable rod 25, it drives the piston block 24 to move away from the extraction pipe 9 in the distributing cylinder 5. At this time, a negative pressure is formed in the distributing cylinder 5, and the block 26 on the extraction pipe 9 side is sucked up. The block 26 on the inlet 31 side is closed due to the pressure difference, and the raw materials in the mixing tank 4 are then homogenized. The premixed liquid enters the distribution cylinder 5 through the extraction pipe 9. The drive mechanism pushes the front extraction pipe 9 of the movable plate 15 to move, the pressure inside the distribution cylinder 5 increases, the side block 26 of the extraction pipe 9 is closed, and the side block 26 of the inlet 31 is pushed open. The premixed liquid is quantitatively injected into the mixing tank body 1 through the inlet 31. During use, the liquid volume injected into the mixing tank body 1 can be kept constant each time by controlling the displacement stroke of the piston block 24 according to actual use needs, so as to accurately control the required raw material ratio. The one-way valve structure composed of the fixed ring 23 and the block 26 ensures that the liquid flows in one direction and avoids the material in the mixing tank from contaminating the ingredient tank 4. The drive mechanism includes a second motor 20, with a lead screw 21 coaxially fixedly connected to the output end of the second motor 20. The lead screw 21 is threaded through a movable plate 15, which has an L-shaped structure. A protective frame 8 is connected to the top of the first support frame 6. The second motor 20 and the lead screw 21 are located inside the protective frame 8, and the top of the protective frame 8 has a slot for use with the movable plate 15. A partition plate 34 is snap-fitted to the upper part of the mixing tank body 1. A second drive gear 27 is rotatably connected to the top of the partition plate 34. The second drive gear 27 and the first drive gear 16 are connected to each other. A connecting shaft is fixedly connected to the second drive gear 27 on one side, and a second driven gear 28 is meshed with the second drive gear 27. The second driven gear 28 is rotatably connected to the partition plate 34. A disturbance rod 29 is fixedly connected to the bottom of the second driven gear 28. The disturbance rod 29 is located inside the mixing tank body 1, and the outer side of the disturbance rod 29 is in contact with the opening of the feed inlet 31. A second stirring rod 30 is fixedly connected to the top of the second drive gear 27. The disturbance rod 29 is located above the second stirring rod 30. Both the first stirring rod 22 and the second stirring rod 30 are spiral structures. Specifically, the second motor 20 drives the lead screw 21 to rotate, which in turn drives the L-shaped movable plate 15 to move linearly via threaded transmission. This allows for precise control of the stroke of the piston block 24. The protective frame 8 completely encloses the second motor 20 and the lead screw 21, with a slot at its top that only allows the movable plate 15 to pass through, effectively preventing liquid splashing and dust intrusion. The cooperation between the second motor 20 and the lead screw 21 facilitates precise control of the moving distance of the movable plate 15, thereby achieving the effect of quantitative material feeding and discharging. The protective frame 8 not only protects the second motor 20 and the lead screw 21 but also... The movable plate 15 serves as a guide for limiting movement. The partition 34 not only supports the second drive gear 27 and the second driven gear 28 but also isolates them, preventing the second drive gear 27 and the second driven gear 28 from being affected by the liquid inside the mixing tank. At the same time, the second driven gear 28 drives the disturbance rod 29 to rotate and stir inside the mixing tank 1, so as to further disturb the mixed ingredients discharged from the feed port 31, quickly break the structure between them, and enable the mixed ingredients to quickly mix with the raw materials inside the mixing tank 1. The mixing tank body 1 is connected to a second feed pipe 11 and an air inlet pipe 12 on its outer side. The bottom of the mixing tank body 1 is provided with a discharge pipe 13 for use with the second feed pipe 11. The bottom of the mixing tank body 1 is provided with a drain pipe 14 for use with the air inlet pipe 12 on one side of the discharge pipe 13. The mixing tank body 1 has a double-layer structure. The top of the fixing ring 23 is provided with a cross-shaped fixing rod 32. A spring 33 is fixedly connected between the fixing rod 32 and the block 26. The top of the mixing tank body 1 is provided with a protective shell for use with the first drive gear 16 and the first driven gear 17. The top of the mixing tank 4 is provided with a dustproof shell for use with the transmission wheel assembly 19. The outside of the mixing tank body 1 is fixedly connected with a support leg 2, which has a ring structure. Specifically, the double-layer structure design of the mixing tank body 1 facilitates the use of the air inlet pipe 12 and the liquid outlet pipe 14 to maintain the temperature of the internal mixing process. High-temperature steam is introduced through the air inlet pipe 12 to assist the mixing of the raw materials in the mixing tank body 1, and the liquid outlet pipe 14 is used to discharge the condensate. The cross-shaped fixing rod 32 at the top of the fixing ring 23 is connected to the spring 33 and the plug 26 to form a structure similar to a one-way valve, so that the material can enter the dispensing cylinder 5 when pumping and prevent the material from flowing back when discharging. This solves the problem of inaccurate flow control or material backflow during the batching process and ensures the accuracy of quantitative batching. The protective shell on the top of the mixing tank body 1 covers the first drive gear 16 and the first driven gear 17. The dustproof shell on the top of the batching tank 4 protects the transmission wheel assembly 19 to prevent dust, liquid or material particles from entering the transmission components, solving the problem of gear meshing failure or transmission efficiency reduction and extending the service life of the equipment. The annular support leg 2 on the outside of the mixing tank body 1 is used to evenly distribute the weight of the equipment and the vibration during operation. The working principle of this invention is as follows: First, different raw materials are fed into the mixing tank 4 through multiple sets of first feed pipes 10 at the top. The first motor 3 is started, and the power is transmitted to the first stirring rod 22 through the first drive gear 16, the first driven gear 17, the connecting rod 18 and the transmission wheel assembly 19 in sequence, so as to complete the initial homogenization of the raw materials and reduce the processing load of the mixing tank body 1. Secondly, the second motor 20 in the drive mechanism drives the lead screw 21 to rotate, which drives the L-shaped movable plate 15 to move linearly, thereby controlling the stroke of the piston block 24 in the distribution cylinder 5. When the piston block 24 moves backward, a negative pressure is formed in the distribution cylinder 5, the block 26 on the side of the extraction pipe 9 opens, and the premixed liquid enters the distribution cylinder 5 from the mixing tank 4. When the piston block 24 moves forward, the pressure in the distribution cylinder 5 increases, the block 26 on the side of the inlet 31 opens, and the premixed liquid is quantitatively injected into the mixing tank body 1. It is worth mentioning that inside the mixing tank body 1, the partition 34 supports and isolates the second drive gear 27 and the second driven gear 28. The first drive gear 16 drives the second drive gear 27 to rotate through the connecting shaft, which in turn drives the second driven gear 28 to rotate the disturbance rod 29 and the second stirring rod 30, further agitating and mixing the material entering the mixing tank body 1. At the same time, the protective frame 8 protects the second motor 20 and the lead screw 21, and the protective shell and dustproof shell prevent the transmission components from being contaminated. The double-layer mixing tank body 1, together with the air inlet pipe 12 and the liquid outlet pipe 14, maintains the internal temperature. Finally, after mixing, the material can be discharged through the discharge pipe 13 corresponding to the second feed pipe 11; the air inlet pipe 12 can introduce high-temperature steam to heat the raw materials, the liquid drain pipe 14 is used to discharge condensate, and the annular support leg 2 ensures the stability of the equipment during operation.

[0017] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A polycarboxylate superplasticizer mother liquor synthesis device, comprising a mixing tank body (1), characterized in that: The mixing tank body (1) is fixedly connected to a second support frame (7) by bolts. The second support frame (7) is snapped onto the top of a mixing tank (4). The top of the mixing tank (4) is connected to multiple sets of first feed pipes (10). A first stirring rod (22) is rotatably connected inside the mixing tank (4). The end of the first stirring rod (22) passes through the top of the mixing tank (4). A suction pipe (9) is fixedly connected to one side of the first stirring rod (22) inside the mixing tank (4). A first motor (3) is installed on the top of the mixing tank body (1). A first drive gear (16) is fixedly connected to the output end of the first motor (3) on the same axis. A first driven gear (17) is meshed on one side of the first drive gear (16). A connecting rod (18) is fixedly connected to the top of the first driven gear (17). A transmission wheel assembly (19) is connected to the top of the first stirring rod (22). The other end of the extraction pipe (9) is connected to a distribution cylinder (5). The distribution cylinder (5) is a three-way pipe structure. A piston block (24) is movably connected to one side of the distribution cylinder (5). A movable rod (25) is fixedly connected to the outside of the piston block (24). The movable rod (25) movably passes through one end of the distribution cylinder (5). An inlet (31) is connected to the distribution cylinder (5) away from the opening of the extraction pipe (9). The opening of the inlet (31) is located inside the main body (1) of the mixing tank. The extraction pipe (9) and the inlet (31) are connected to each other. 1) It has a symmetrical structure. The piston block (24) and the movable rod (25) are located in the middle of the material extraction pipe (9) and the inlet (31). Multiple sets of fixed rings (23) are provided in the material distribution cylinder (5). The bottom of the fixed ring (23) is slidably connected to the block (26). The other end of the movable rod (25) is fixedly connected to the movable plate (15). The outside of the mixing tank body (1) is fixedly connected to the first support frame (6). The top of the first support frame (6) is equipped with a drive mechanism that works with the movable plate (15).

2. The apparatus for synthesizing polycarboxylate superplasticizer mother liquor according to claim 1, characterized in that: The driving mechanism includes a second motor (20), and a lead screw (21) is coaxially fixedly connected to the output end of the second motor (20). The lead screw (21) is threaded through the movable plate (15). The movable plate (15) has an L-shaped structure. A protective frame (8) is connected to the top of the first support frame (6). The second motor (20) and the lead screw (21) are located inside the protective frame (8), and the top of the protective frame (8) is provided with a slot for use with the movable plate (15).

3. The apparatus for synthesizing polycarboxylate superplasticizer mother liquor according to claim 2, characterized in that: A partition (34) is snapped onto the upper part of the mixing tank body (1). A second drive gear (27) is rotatably connected to the top of the partition (34). A connecting shaft is coaxially fixed between the second drive gear (27) and the first drive gear (16). A second driven gear (28) is meshed with one side of the second drive gear (27). The second driven gear (28) is rotatably connected to the partition (34). A disturbance rod (29) is fixedly connected to the bottom of the second driven gear (28). The disturbance rod (29) is located inside the mixing tank body (1), and the outer side of the disturbance rod (29) is in contact with the opening of the feed inlet (31).

4. The apparatus for synthesizing polycarboxylate superplasticizer mother liquor according to claim 3, characterized in that: The second driving gear (27) is fixedly connected to the top of the second stirring rod (30), and the disturbance rod (29) is located above the second stirring rod (30). Both the first stirring rod (22) and the second stirring rod (30) are spiral structures.

5. The apparatus for synthesizing polycarboxylate superplasticizer mother liquor according to claim 4, characterized in that: The mixing tank body (1) is connected to a second feed pipe (11) and an air inlet pipe (12) on the outside. The bottom of the mixing tank body (1) is provided with a discharge pipe (13) for use with the second feed pipe (11). The bottom of the mixing tank body (1) is provided with a drain pipe (14) for use with the air inlet pipe (12) on one side of the discharge pipe (13). The mixing tank body (1) has a double-layer structure.

6. The apparatus for synthesizing polycarboxylate superplasticizer mother liquor according to claim 5, characterized in that: The top of the fixing ring (23) is provided with a cross-shaped fixing rod (32), and a spring (33) is fixedly connected between the fixing rod (32) and the block (26). The top of the mixing tank body (1) is equipped with a protective shell that works with the first drive gear (16) and the first driven gear (17). The top of the mixing tank (4) is provided with a dustproof shell that works with the transmission wheel assembly (19). The outside of the mixing tank body (1) is fixedly connected with a support leg (2), which is a ring structure.

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