Polyurethane resin auxiliary temperature-controlled quantitative dilution device

Abstract

This utility model discloses a temperature-controlled quantitative dilution device for polyurethane resin additives, relating to the technical field of additive dilution equipment. It includes a housing and a mixing mechanism and a mixing aid assembly fixedly mounted thereon. The mixing aid assembly is located inside the housing, and the mixing mechanism does not contact the mixing aid assembly. The mixing aid assembly includes a gas collecting ring, multiple sets of gas distribution pipes, gas inlet pipes, a frame, a gas supply pipe, and a gas pump. The gas pump is fixedly mounted to the housing on its outer side. The gas inlet pipes connected to the multiple gas distribution pipes are arranged in a ring shape, with multiple sets of inlet pipes whose lengths gradually increase or decrease in a ring-like pattern. An annular cavity is provided within the gas collecting ring. The advantages of this utility model are: air is drawn into the gas collecting ring by the gas pump, distributed annularly to the multiple sets of gas distribution pipes, and then enters the gas inlet pipes from the gas distribution pipes to puff the premixed material, thereby increasing the mixing surface and mixing efficiency. Furthermore, the puffing height changes in a ring-like stepped manner, which uniformly increases the puffing area and further improves mixing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of additive dilution equipment technology, and more specifically to a temperature-controlled quantitative dilution device for polyurethane resin additives. Background Technology

[0002] In the production process of polyurethane materials, it is sometimes necessary to dilute the additives to achieve better performance or meet specific process requirements. At this time, a device is needed to mix the polyurethane resin additives and solvents in a certain proportion.

[0003] Existing dilution equipment, such as the one described in application number CN202320824010.1, "A rapid dilution device for concentrated polyacrylamide solution", uses a metering pump for precise feeding and a heating element to improve the efficiency of mixing.

[0004] However, when the above-mentioned dilution device only uses stirring and heating components to cooperate in the mixing operation, the mixing surface of the mixture is relatively limited, resulting in low efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a temperature-controlled quantitative dilution device for polyurethane resin additives in order to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] This utility model proposes a temperature-controlled quantitative dilution device for polyurethane resin additives, including a housing and a mixing mechanism and a mixing aid component fixed on it. The mixing aid component is located inside the housing, and the mixing mechanism does not contact the mixing aid component.

[0008] The mixing aid assembly includes an air collecting ring, multiple sets of air distribution pipes uniformly connected and fixed around the air collecting ring, an air inlet pipe fixed at the bottom end of the air distribution pipe, a frame fixed between the air distribution pipe and the housing, an air supply pipe connected and fixed outside the air collecting ring, and an air pump connected and fixed to the air supply pipe.

[0009] The air pump is fixed to the outer side of the housing; the air inlet pipes connected to the multi-component air pipes are distributed in a ring shape, and there are multiple sets of air inlet pipes with their lengths gradually increasing or decreasing in a ring shape. There is an annular cavity inside the air collecting ring.

[0010] As a preferred embodiment of this utility model, when the length of the multiple sets of air inlet pipes gradually increases in a ring shape, their pipe diameter gradually increases.

[0011] As a preferred technical solution of this utility model, the mixing mechanism includes a servo motor fixed to the top of the housing, a connecting shaft fixed to the output end of the servo motor, a rotating rod fixed to the connecting shaft, and a stirring blade fixed to the outside of the rotating rod. The connecting shaft passes through both the inner and outer sides of the housing and is rotatably connected to the housing through bearings.

[0012] As a preferred embodiment of this utility model, the gas collecting ring is spaced out and surrounds the connecting shaft.

[0013] As a preferred embodiment of this utility model, the multiple sets of air inlet pipes are arranged around the stirring blade.

[0014] As a preferred technical solution of this utility model, it also includes a dilute liquid inlet pipe fixed to the top of the shell, a discharge valve fixed to the bottom of the shell, a supply pipe fixedly inserted outside the shell, a heating plate fixed inside the shell, a temperature sensor fixed outside the shell, a bracket fixed outside the shell, and a controller fixed outside the bracket. The sensing end of the temperature sensor is fixedly inserted inside the shell, and the supply pipes are connected to a metering pump.

[0015] The beneficial effects of this utility model are as follows:

[0016] Air is drawn into the air collection ring by an air pump, and then distributed in a ring to multiple sets of air distribution pipes. From there, the air enters the air inlet pipe to agitate the premixed material, thereby increasing the mixing surface and improving mixing efficiency. The height of the agitation changes in a ring-shaped stepped manner, which can uniformly increase the agitation area and further improve mixing efficiency. In addition, the air pump draws air from inside the housing, which has a small impact on the variables during mixing and ensures stable quality. Attached Figure Description

[0017] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0018] Fig. 2 This is a schematic diagram of the structure of this utility model.

[0019] Reference numerals in the attached drawings: housing-1, mixing mechanism-2, mixing aid assembly-3, dilute liquid inlet pipe-4, discharge valve-5, supply pipe-6, heating plate-7, temperature sensor-8, bracket-9, controller-10, servo motor-21, coupling shaft-22, rotating rod-23, stirring blade-24, gas collecting ring-31, gas distribution pipe-32, air inlet pipe-33, fixed frame-34, air supply pipe-35, air pump-36. Detailed Implementation

[0020] like Figs. 1-2As shown, this utility model proposes: a temperature-controlled quantitative dilution device for polyurethane resin additives, including a housing 1 and a mixing mechanism 2 and a mixing aid 3 fixed on it, the mixing aid 3 being located inside the housing 1, and the mixing mechanism 2 not contacting the mixing aid 3.

[0021] It also includes a dilute liquid inlet pipe 4 fixed to the top of the housing 1, a discharge valve 5 fixed to the bottom of the housing 1, a supply pipe 6 fixedly inserted outside the housing 1, a heating plate 7 fixed inside the housing 1, a temperature sensor 8 fixed outside the housing 1, a bracket 9 fixed outside the housing 1, and a controller 10 fixed outside the bracket 9. The sensing end of the temperature sensor 8 is fixedly inserted inside the housing 1.

[0022] The controller 10 (a PLC controller) is connected to an external power source to power the electrical components for opening and closing. The dilute liquid inlet pipe 4 is fixedly inserted into the interior of the housing 1 at the top, and the dilute liquid inlet pipes 4 are connected to a switch valve for opening and closing the flow. The support 9 provides overall support and stability. The metering pump and the switch valve are connected to the supply pipes 6.

[0023] When in use, diluent (such as water) is introduced into housing 1 through diluent inlet pipe 4. The polyurethane resin additive is accurately drawn into housing 1 through metering pump, then placed into housing 1 through supply pipe 6. The mixing mechanism 2 is started by controller 10 to mix the material. Heating plate 7 is connected to electricity to generate heat and temperature sensor 8 monitors the temperature during mixing. Mixing aid component 3 is used to improve mixing efficiency. After mixing is completed, the mixed diluent is discharged through discharge valve 5.

[0024] The specific structure of the mixing aid component 3 is shown below:

[0025] The mixing aid assembly 3 includes an air collecting ring 31, multiple sets of air distribution pipes 32 uniformly connected and fixed around the air collecting ring 31, an air inlet pipe 33 fixed at the bottom end of the air distribution pipe 32, a frame 34 fixed between the air distribution pipe 32 and the housing 1, an air supply pipe 35 connected and fixed outside the air collecting ring 31, and an air pump 36 connected and fixed to the air supply pipe 35.

[0026] The air pump 36 is fixed to the outer side of the housing 1; the air inlet pipes 33 connected to the multi-component air pipes 32 are distributed in a ring shape, and the air inlet pipes 33 are provided in multiple sets with their length gradually increasing or decreasing in a ring shape. The air collecting ring 31 has an annular cavity; the air pump 36 is a vacuum pump (KNF-NMP850 series micro vacuum pump) or a diaphragm pump (such as Thomas 230 series micro diaphragm pump).

[0027] As shown in the figure, the length of the multiple sets of air inlet pipes 33 gradually increases when rotating clockwise (not shown in the figure; or the length of the multiple sets of air inlet pipes 33 gradually decreases when rotating counterclockwise). The air pump 36 is fixed inside the shell 1 on the upper side. When adding premixed material, the shell 1 is not completely filled. That is, there is a gap between the premixed material and the top of the shell 1 for the air pump 36 to draw air.

[0028] During use, the air pump 36 draws air into the air collection ring 31, which then distributes it in a ring to multiple sets of air distribution pipes 32. The air then enters the air inlet pipe 33 from the air distribution pipes 32 to blow air into the premixed material, thereby increasing the mixing surface and improving the mixing efficiency. The height of the blown air changes in a ring-shaped stepped manner, which can uniformly increase the blown air area and further improve the mixing efficiency. In addition, the air pump 36 draws air from inside the housing 1, which has a small impact on the variables during mixing and ensures stable quality.

[0029] As the length of the multiple sets of air inlet pipes 33 gradually increases in a ring shape, their diameter also gradually increases. Since the longer the length, the greater the depth into the premix, the greater the pressure is required. To ensure the uniformity of air blowing in each set of air inlet pipes 33, the diameter of the air inlet pipes 33 with successively increasing lengths is set to gradually increase. This way, the pressure of the shorter ones will increase, and the pressure of the longer ones will decrease, thus compensating for each other and improving the uniformity of air blowing in each set of air inlet pipes 33.

[0030] The specific structure of the mixing aid component 3 is shown below:

[0031] The mixing mechanism 2 includes a servo motor 21 fixed to the top of the housing 1, a connecting shaft 22 fixed to the output end of the servo motor 21, a rotating rod 23 fixed to the connecting shaft 22, and a stirring blade 24 fixed to the outside of the rotating rod 23. The connecting shaft 22 passes through both the inner and outer sides of the housing 1 and is rotatably connected to the housing 1 through bearings. The servo motor 21 is fixed to the top of the housing 1, with the output end of the servo motor 21 facing downwards. The connecting shaft 22 passes through the top of the housing 1 to the inside of the housing 1, and the passage is connected by rotating parts such as bearings. The servo motor 21 is fixed to the top of the connecting shaft 22, and the rotating rod 23 is fixed to the bottom of the connecting shaft 22. When the servo motor 21 is running, it can drive the connecting shaft 22, the rotating rod 23 and the stirring blade 24 to rotate synchronously, thereby mixing the premixed materials.

[0032] The gas collecting ring 31 is spaced around the connecting shaft 22; that is, the connecting shaft 22 does not contact the gas collecting ring 31, which saves space.

[0033] Among them, multiple sets of air inlet pipes 33 are arranged around the stirring blade 24; they will not be contacted by the rotating stirring blade 24.

[0034] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power component and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A temperature-controlled quantitative dilution device for polyurethane resin additives, comprising a housing (1) and a mixing mechanism (2) and a mixing aid component (3) fixed thereon, wherein the mixing aid component (3) is located inside the housing (1) and the mixing mechanism (2) does not contact the mixing aid component (3). Its features are, The mixing aid assembly (3) includes an air collecting ring (31), multiple sets of air distribution pipes (32) uniformly connected and fixed around the air collecting ring (31), an air inlet pipe (33) fixed at the bottom end of the air distribution pipe (32), a frame (34) fixed between the air distribution pipe (32) and the housing (1), an air supply pipe (35) connected and fixed outside the air collecting ring (31), and an air pump (36) connected and fixed to the air supply pipe (35). The air pump (36) is fixed to the outer side of the housing (1); the air inlet pipes (33) connected to the multi-component air pipes (32) are distributed in a ring shape. The air inlet pipes (33) are provided in multiple groups and their length gradually increases or decreases in a ring shape. The air collecting ring (31) is provided with a ring cavity.

2. The polyurethane resin additive temperature-controlled quantitative dilution device according to claim 1, characterized in that, As the length of the multiple sets of air inlet pipes (33) gradually increases in a ring shape, their diameter gradually increases.

3. The polyurethane resin additive temperature-controlled quantitative dilution device according to claim 1, characterized in that, The mixing mechanism (2) includes a servo motor (21) fixed to the top of the housing (1), a connecting shaft (22) fixed to the output end of the servo motor (21), a rotating rod (23) fixed to the connecting shaft (22), and a stirring blade (24) fixed to the outside of the rotating rod (23). The connecting shaft (22) passes through the inner and outer sides of the housing (1) and the connecting shaft (22) is rotatably connected to the housing (1) through a bearing.

4. The polyurethane resin additive temperature-controlled quantitative dilution device according to claim 3, characterized in that, The gas collecting ring (31) is spaced around the connecting shaft (22).

5. The polyurethane resin additive temperature-controlled quantitative dilution device according to claim 3, characterized in that, Multiple sets of air inlet pipes (33) are arranged around the stirring blade (24).

6. The polyurethane resin additive temperature-controlled quantitative dilution device according to claim 1, characterized in that, It also includes a dilute inlet pipe (4) fixed to the top of the housing (1), a discharge valve (5) fixed to the bottom of the housing (1), a supply pipe (6) fixedly inserted outside the housing (1), a heating plate (7) fixed inside the housing (1), a temperature sensor (8) fixed outside the housing (1), a bracket (9) fixed outside the housing (1), and a controller (10) fixed outside the bracket (9). The sensing end of the temperature sensor (8) is fixedly inserted inside the housing (1), and the supply pipes (6) are connected to a metering pump.

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