Pre-emulsification device for synthesizing water-based acrylic emulsion

Abstract

The utility model discloses a pre-emulsification device for synthesizing water-based acrylic emulsion, and particularly relates to the technical field of water-based acrylic emulsion synthesis, the pre-emulsification device comprises a reaction cabinet and an emulsification tank, the left side of the rear end of the reaction cabinet is rotatably connected with a cabinet door, and the lower side of the inner surface of the reaction cabinet is provided with a lifting assembly; an annular iron sheet is fixedly connected to the lower end of the emulsifying tank, the annular iron sheet and the upper side of the lifting assembly are movably mounted, a conveying assembly is arranged at the upper end of the reaction cabinet, and a stirring assembly is arranged on the upper side of the inner surface of the reaction cabinet. According to the pre-emulsification device for synthesizing the water-based acrylic emulsion, the arranged lifting component can drive the emulsification tank to move up and down and is matched with other components to finish the pre-emulsification work for synthesizing the water-based acrylic emulsion; the conveying assembly is arranged, so that a proper amount of emulsifier and deionized water do not need to be manually injected into the emulsifying tank, and the workload of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water-based acrylic emulsion synthesis, in particular to a pre-emulsification device used for synthesizing water-based acrylic emulsion. Background Art

[0002] The main purpose of pre-emulsification is to evenly mix the raw materials such as acrylic monomer, emulsifier, and water to form a stable emulsion. This step helps the subsequent polymerization reaction proceed smoothly and improves the performance and stability of the emulsion.

[0003] The pre-emulsification process is divided into: Raw material preparation: prepare raw materials such as acrylic hard monomer, acrylic soft monomer, acrylic functional monomer, emulsifier and water. The proportion and type of these raw materials will be adjusted according to specific product requirements; Mixing and stirring: add the above raw materials into the pre-emulsification kettle and stir at high speed. The purpose of stirring is to fully mix the raw materials to form a uniform emulsion. The stirring time and speed need to be adjusted according to the properties of the raw materials and the emulsification effect; Emulsification effect: through stirring, the acrylic monomer in the raw material is emulsified into tiny droplets and evenly dispersed in the water. The non-stratification of the emulsion is an important indicator of its stability.

[0004] Chinese Patent Publication No. CN215539911 U relates to a novel pre-emulsification device for the synthesis of aqueous acrylic emulsions, belonging to the technical field of emulsion synthesis equipment. The pre-emulsification device includes a pre-emulsification kettle, a circulation pump, an internal circulation pipeline, an external circulation pipeline, a feed pipeline, a main stirring mechanism, and a side stirring mechanism. A spray head is fixedly installed inside the upper end of the pre-emulsification kettle. The lower end of the internal circulation pipeline extends into the bottom of the emulsification kettle. The upper end of the internal circulation pipeline is connected to one end of the external circulation pipeline, and the other end of the external circulation pipeline is connected to the inlet of the circulation pump. The outlet of the circulation pump is connected to the feed pipe, which is in communication with the spray head. When the pre-emulsification liquid is stored or added dropwise to the main reaction kettle of the aqueous acrylic emulsion, the pre-emulsification device adopts an external circulation method to achieve the circulation of the pre-emulsion liquid. This avoids stratification of the pre-emulsion liquid without starting high-power stirring, thereby reducing energy consumption and making it more suitable for use in industrial production.

[0005] The above-mentioned device is provided with a discharge valve for releasing the pre-emulsified material in the synthesis of aqueous acrylic emulsion. The pre-emulsification step in the synthesis of aqueous acrylic emulsion is mainly to obtain pre-emulsified monomers. However, the pre-emulsified monomers will be subjected to a certain shear force when passing through the valve. If the shear force is too large, it may destroy the stability of the emulsion, causing the monomer droplets to re-aggregate or stratify, which goes against the original intention of performing the pre-emulsification step in the synthesis of aqueous acrylic emulsion. Utility Model Content

[0006] The main purpose of the utility model is to provide a pre-emulsification device for the synthesis of aqueous acrylic emulsion, which can effectively solve the problem that the pre-emulsification step of the synthesis of aqueous acrylic emulsion uses a valve as a discharge mechanism, which easily causes adverse effects on the pre-emulsified monomers produced during the pre-emulsification.

[0007] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0008] A pre-emulsification device for synthesizing water-based acrylic emulsions comprises a reaction cabinet and an emulsification tank. The left side of the rear end of the reaction cabinet is rotatably connected to a cabinet door. A lifting assembly is provided on the lower side of the inner surface of the reaction cabinet. The lower end of the emulsification tank is fixedly connected to a circular iron sheet, which is movably mounted on the upper side of the lifting assembly. A conveying assembly is provided on the upper end of the reaction cabinet, and a stirring assembly is provided on the upper side of the inner surface of the reaction cabinet.

[0009] Preferably, the lifting assembly includes a hydraulic cylinder, which is fixedly connected to the middle part of the lower side of the inner surface of the reaction cabinet. The upper end of the piston rod at the output end of the hydraulic cylinder is fixedly connected to a slide. The middle part of the upper end of the slide is fixedly connected to an electromagnet, and the electromagnet is movably installed with the circular iron sheet.

[0010] Preferably, the upper left portion of the inner surface of the reaction cabinet and the upper right portion of the inner surface are both fixedly connected with a sliding rod, and the sliding plate is slidably connected to the outer surfaces of the two sliding rods.

[0011] Preferably, the stirring assembly includes a motor, which is fixedly connected to the middle part of the upper end of the reaction cabinet. The output end of the motor is fixedly connected to a rotating rod through a coupling. The lower end of the rotating rod passes through the middle part of the upper end of the reaction cabinet and extends into the reaction cabinet. Three stirring plates are fixedly connected to the lower side of the outer surface of the rotating rod.

[0012] Preferably, a circular plate is rotatably connected to the outer surface of the rotating rod, and the circular plate is fixedly connected to the middle portion of the upper side of the inner surface of the reaction cabinet. A circular groove is formed at the lower end of the circular plate.

[0013] Preferably, the conveying assembly includes a water pump, which is fixedly connected to the middle part of the right upper end of the reaction cabinet. The output end of the water pump is fixedly connected to a delivery pipe. The lower side of the delivery pipe is fixedly connected to the right upper end of the reaction cabinet and the right upper end of the circular plate and passes through them. A water tank assembly is provided on the front side of the water pump.

[0014] Preferably, the water tank assembly includes water tank 1 and water tank 2, both of which are fixedly connected to the front upper end of the reaction cabinet, the water pump input end is fixedly connected to a connecting pipe, the front end of the connecting pipe is fixedly connected to a three-way valve, the front port of the three-way valve is fixedly connected to round pipe 1, the front round pipe 1 is fixedly connected to and communicated with the rear end of water tank 1, the left port of the three-way valve is fixedly connected to round pipe 2, the left round pipe 2 is fixedly connected to and communicated with the right end of water tank 2.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The lifting component provided in the utility model can drive the emulsification tank to move up and down, and cooperate with other components to complete the pre-emulsification work of the water-based acrylic emulsion synthesis; the conveying component provided makes it unnecessary to manually inject an appropriate amount of emulsifier and deionized water into the emulsification tank, thereby reducing the workload of the staff; the stirring component provided can stir the various substances in the emulsification tank, so that the various substances in the emulsification tank are fully and evenly integrated, thereby generating a reaction until the stable monomer emulsion desired by the staff is formed.

[0017] 2. The annular groove provided in the present invention can further limit the position of the emulsification tank, thereby increasing the stability of the position of the emulsification tank when the stirring assembly is running to stir the substances in the emulsification tank; at the same time, after the emulsification tank is inserted into the annular groove, the circular plate can seal the upper opening of the emulsification tank, thereby ensuring the sealing of the emulsification tank and preventing foreign substances from entering the emulsification tank when the various substances in the emulsification tank are being stirred and mixed, thereby causing adverse effects on the stirring and mixing reactions of the various substances. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the lifting assembly structure of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the stirring assembly of the present utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the conveying component of the present utility model;

[0023] Figure 6 This is a schematic structural diagram of the water tank assembly of the present utility model.

[0024] In the figure: 1. reaction cabinet; 2. cabinet door; 3. lifting assembly; 31. hydraulic cylinder; 32. slide plate; 33. electromagnet; 34. slide rod; 4. circular iron sheet; 5. emulsification tank; 6. conveying assembly; 61. water pump; 62. conveying pipe; 63. water tank assembly; 631. connecting pipe; 632. three-way valve; 633. circular pipe 1; 634. water tank 1; 635. circular pipe 2; 636. water tank 2; 7. stirring assembly; 71. motor; 72. rotating rod; 73. stirring plate; 74. circular plate; 75. circular groove. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] like Figure 1 and Figure 2 As shown, a pre-emulsification device for synthesizing water-based acrylic emulsion includes a reaction cabinet 1 and an emulsification tank 5. The left side of the rear end of the reaction cabinet 1 is rotatably connected to a cabinet door 2, a lifting assembly 3 is provided on the lower side of the inner surface of the reaction cabinet 1, a circular iron sheet 4 is fixedly connected to the lower end of the emulsification tank 5, and the circular iron sheet 4 is movably installed on the upper side of the lifting assembly 3, a conveying assembly 6 is provided on the upper end of the reaction cabinet 1, and a stirring assembly 7 is provided on the upper side of the inner surface of the reaction cabinet 1.

[0027] In a specific implementation, a certain amount of emulsifier and deionized water are stored in the conveying assembly 6, and acrylic hard monomer, acrylic soft monomer and acrylic functional monomer, etc., which are prepared in a certain proportion, are placed in the emulsification tank 5, and then the emulsification tank 5 is fixed on the lifting assembly 3;

[0028] The lifting assembly 3 is turned on to drive the emulsification tank 5 to rise and contact the upper side of the inner surface of the reaction cabinet 1. The conveying assembly 6 is turned on to inject an appropriate amount of emulsifier and deionized water into the emulsification tank 5. Then, the stirring assembly 7 is turned on to stir the various substances in the emulsification tank 5 so that these substances are fully and evenly mixed together.

[0029] After the stirring is completed, the lifting assembly 3 is opened to drive the emulsification tank 5 to descend, and then the emulsification tank 5 is taken out of the device, and the stirred material in the emulsification tank 5 is taken out for subsequent use.

[0030] Specifically, in order to better carry out the pre-emulsification in the synthesis of water-based acrylic emulsion, refer to Figure 3The lifting assembly 3 includes a hydraulic cylinder 31, which is fixedly connected to the middle part of the lower side of the inner surface of the reaction cabinet 1. The upper end of the piston rod at the output end of the hydraulic cylinder 31 is fixedly connected to a slide 32, and the middle part of the upper end of the slide 32 is fixedly connected to an electromagnet 33. The electromagnet 33 is movably installed with the circular iron sheet 4; the upper and lower left parts of the inner surface of the reaction cabinet 1 and the upper and lower right parts of the inner surface are both fixedly connected to slide rods 34, and the slide 32 is slidably connected to the outer surfaces of the two slide rods 34;

[0031] Further reading Figure 4 The stirring assembly 7 includes a motor 71, which is fixedly connected to the middle part of the upper end of the reaction cabinet 1. The output end of the motor 71 is fixedly connected to a rotating rod 72 through a coupling. The lower end of the rotating rod 72 passes through the middle part of the upper end of the reaction cabinet 1 and extends into the reaction cabinet 1. Three stirring plates 73 are fixedly connected to the lower side of the outer surface of the rotating rod 72; a circular plate 74 is rotatably connected to the outer surface of the rotating rod 72, and the circular plate 74 is fixedly connected to the middle part of the upper side of the inner surface of the reaction cabinet 1. A circular groove 75 is opened at the lower end of the circular plate 74;

[0032] Further reading Figure 5 The conveying assembly 6 includes a water pump 61, which is fixedly connected to the middle part of the upper right side of the reaction cabinet 1. The output end of the water pump 61 is fixedly connected to a conveying pipe 62. The lower conveying pipe 62 is fixedly connected to the upper right part of the reaction cabinet 1 and the upper right part of the circular plate 74 and is connected to each other. A water tank assembly 63 is provided in front of the water pump 61; the water tank assembly 63 includes a water tank 1 634 and a water tank 2 636. The water tank 1 634 and the water tank 2 636 are both connected to the reaction cabinet 1 is fixedly connected at the front end, the input end of the water pump 61 is fixedly connected to a connecting pipe 631, the front end of the connecting pipe 631 is fixedly connected to a three-way valve 632, the front port of the three-way valve 632 is fixedly connected to a round pipe 1 633, the front round pipe 1 633 is fixedly connected to and communicates with the rear end of the water tank 1 634, the left port of the three-way valve 632 is fixedly connected to a round pipe 2 635, and the left round pipe 2 635 is fixedly connected to the right end of the water tank 2 636 and communicates with each other.

[0033] The above-mentioned three-way valve 632 is composed of a valve body, a valve core, and a valve seat. It has one inlet and two outlets (or vice versa). The movement of the valve core can close one outlet and open the other outlet at the same time, thereby changing the flow direction of the medium. This is a mature technical means in the prior art, and this solution will not further elaborate on its structure and working principle.

[0034] The electromagnet 33 is a mature technical means in the prior art. This solution only uses the function that it can generate magnetism when it is powered on to attract objects, and the magnetism disappears when the power is turned off, and it no longer attracts objects. Its structure and working principle will not be elaborated here.

[0035] In a specific implementation, a certain amount of emulsifier and deionized water are stored in the second water tank 636 and the second circular tube 635, respectively. A well-proportioned mixture of acrylic hard monomer, acrylic soft monomer, and acrylic functional monomer is added to the emulsification tank 5. The emulsification tank 5 is then placed on the electromagnet 33. The electromagnet 33 is energized so that the electromagnet 33 and the circular iron sheet 4 are attracted together, thereby fixing the emulsification tank 5 on the slide 32. This prevents the emulsification tank 5 from shaking around when the stirring assembly 7 is subsequently operated to stir the material in the emulsification tank 5, thereby affecting the normal stirring process.

[0036] Then, the hydraulic cylinder 31 is opened to extend the piston rod, thereby driving the slide plate 32 to move upward, thereby driving the emulsification tank 5 to move upward until the emulsification tank 5 is inserted into the annular groove 75. In this way, the position of the emulsification tank 5 is further limited, and the stability of the position of the emulsification tank 5 is further increased when the stirring assembly 7 is running to stir the substance in the emulsification tank 5.

[0037] At the same time, the sealing of the emulsification tank 5 is ensured to prevent foreign substances from entering the emulsification tank 5 when the various substances in the emulsification tank 5 are stirred and mixed, thereby causing adverse effects on the stirring and mixing reactions of the various substances;

[0038] The two slide bars 34 can increase the stability of the hydraulic cylinder 31 when opening the telescopic piston rod, thereby driving the slide plate 32 to move up and down;

[0039] Adjust the three-way valve 632 so that the second circular pipe 635 is open and the first circular pipe 633 is closed. Then start the water pump 61 to extract the emulsifier in the second water tank 636 and transfer it to the emulsification tank 5. After the appropriate amount of emulsifier is transferred, turn off the water pump 61.

[0040] Then adjust the three-way valve 632 so that the second circular pipe 635 is closed and the first circular pipe 633 is open. Then start the water pump 61 to pump out the deionized water in the water tank 1 634 and transfer it to the emulsification tank 5. After the appropriate amount of deionized water is transferred, turn off the water pump 61.

[0041] In this way, there is no need to manually inject an appropriate amount of emulsifier and deionized water into the emulsification tank 5, thereby reducing the workload of the staff;

[0042] Then, the motor 71 is turned on to rotate the rotating rod 72, thereby driving the three stirring plates 73 to rotate, stirring the various substances in the emulsification tank 5, so that the various substances in the emulsification tank 5 are fully and evenly blended, thereby generating a reaction until a stable monomer emulsion is formed;

[0043] After the various substances in the emulsification tank 5 are stirred and mixed, the hydraulic cylinder 31 is opened to retract the piston rod, thereby driving the emulsification tank 5 to move downward to a certain position, the electromagnet 33 is powered off, the emulsification tank 5 is taken out of the reaction cabinet 1, and the substances in the emulsification tank 5 are taken out for subsequent use.

[0044] It should be noted that the specific installation method, circuit connection method and control method of the hydraulic cylinder 31, electromagnet 33, water pump 61 and motor 71 used in the present invention are all conventional designs and will not be elaborated in detail in the present invention.

[0045] The working principle of this utility model is:

[0046] Add acrylic hard monomer, acrylic soft monomer and acrylic functional monomer in a well-mixed ratio into the emulsification tank 5, then place the emulsification tank 5 on the electromagnet 33 and energize the electromagnet 33 to fix the emulsification tank 5 on the slide 32;

[0047] The hydraulic cylinder 31 is opened to extend the piston rod, thereby driving the emulsification tank 5 to move upward until the emulsification tank 5 is inserted into the annular groove 75;

[0048] Adjust the three-way valve 632 so that the second circular pipe 635 is open and the first circular pipe 633 is closed, then start the water pump 61 to extract an appropriate amount of emulsifier from the second water tank 636 and transfer it to the emulsification tank 5;

[0049] Then adjust the three-way valve 632 so that the second circular pipe 635 is closed and the first circular pipe 633 is open. Then start the water pump 61 to pump out an appropriate amount of deionized water from the first water tank 634 and transfer it to the emulsification tank 5.

[0050] Then, the motor 71 is turned on to drive the rotating rod 72 to rotate, thereby driving the three stirring plates 73 to rotate, stirring the various substances in the emulsification tank 5, so that the various substances in the emulsification tank 5 are fully and evenly blended;

[0051] After the stirring and mixing is completed, the hydraulic cylinder 31 is opened to retract the piston rod, thereby driving the emulsification tank 5 to move downward, the electromagnet 33 is powered off, the emulsification tank 5 is taken out of the reaction cabinet 1, and the material in the emulsification tank 5 is taken out for subsequent use.

[0052] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A pre-emulsification device for synthesizing aqueous acrylic emulsion, comprising a reaction cabinet (1) and an emulsification tank (5), characterized in that: The left side of the rear end of the reaction cabinet (1) is rotatably connected to a cabinet door (2); a lifting assembly (3) is provided on the lower side of the inner surface of the reaction cabinet (1); a circular iron sheet (4) is fixedly connected to the lower end of the emulsification tank (5); the circular iron sheet (4) is movably mounted on the upper side of the lifting assembly (3); a conveying assembly (6) is provided on the upper end of the reaction cabinet (1); and a stirring assembly (7) is provided on the upper side of the inner surface of the reaction cabinet (1).

2. A pre-emulsification device for synthesizing aqueous acrylic emulsion according to claim 1, characterized in that: The lifting assembly (3) comprises a hydraulic cylinder (31), the hydraulic cylinder (31) being fixedly connected to the middle portion of the lower side of the inner surface of the reaction cabinet (1), the upper end of the piston rod at the output end of the hydraulic cylinder (31) being fixedly connected to a slide plate (32), the middle portion of the upper end of the slide plate (32) being fixedly connected to an electromagnet (33), and the electromagnet (33) being movably mounted on the circular iron sheet (4).

3. A pre-emulsification device for synthesizing aqueous acrylic emulsion according to claim 2, characterized in that: The upper and lower left portions of the inner surface of the reaction cabinet (1) and the upper and lower right portions of the inner surface are both fixedly connected with a slide bar (34), and the slide plate (32) is slidably connected to the outer surfaces of the two slide bars (34).

4. A pre-emulsification device for synthesizing aqueous acrylic emulsion according to claim 1, characterized in that: The stirring assembly (7) comprises a motor (71), the motor (71) being fixedly connected to the middle portion of the upper end of the reaction cabinet (1), the output end of the motor (71) being fixedly connected to a rotating rod (72) via a coupling, the lower end of the rotating rod (72) passing through the middle portion of the upper end of the reaction cabinet (1) and extending into the reaction cabinet (1), and three stirring plates (73) being fixedly connected to the lower side of the outer surface of the rotating rod (72).

5. A pre-emulsification device for synthesizing aqueous acrylic emulsion according to claim 4, characterized in that: The outer surface of the rotating rod (72) is rotatably connected to a circular plate (74), and the circular plate (74) is fixedly connected to the middle portion of the upper side of the inner surface of the reaction cabinet (1). The lower end of the circular plate (74) is provided with a circular groove (75).

6. A pre-emulsification device for synthesizing aqueous acrylic emulsion according to claim 5, characterized in that: The conveying assembly (6) includes a water pump (61), the water pump (61) is fixedly connected to the middle part of the right upper end of the reaction cabinet (1), the output end of the water pump (61) is fixedly connected to a conveying pipe (62), the lower side of the conveying pipe (62) is fixedly connected to the right upper end of the reaction cabinet (1) and the right upper end of the circular plate (74) and is connected to both, and a water tank assembly (63) is provided on the front side of the water pump (61).

7. A pre-emulsification device for synthesizing aqueous acrylic emulsion according to claim 6, characterized in that: The water tank assembly (63) includes a water tank 1 (634) and a water tank 2 (636). The water tank 1 (634) and the water tank 2 (636) are both fixedly connected to the front upper end of the reaction cabinet (1). The input end of the water pump (61) is fixedly connected to a connecting pipe (631). The front end of the connecting pipe (631) is fixedly connected to a three-way valve (632). The front port of the three-way valve (632) is fixedly connected to a circular pipe 1 (633). The front circular pipe 1 (633) is fixedly connected to and communicates with the rear end of the water tank 1 (634). The left port of the three-way valve (632) is fixedly connected to a circular pipe 2 (635). The left circular pipe 2 (635) is fixedly connected to and communicates with the right end of the water tank 2 (636).

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