Mixing and dispersing device for producing fluorescent whitening agent

Abstract

The utility model discloses a mixing and dispersing device for producing a fluorescent whitening agent, which comprises a shell, a first motor is arranged at the top of the shell, the first motor is connected with a stirring rod, and the stirring rod penetrates through the shell and extends into the shell; the lower end of the stirring rod is connected with a stirring piece; a first air channel is formed in the stirring rod, a second air channel is formed in the stirring part, the first air channel is communicated with the second air channel, the first air channel is connected with a ventilation pipe, the stirring part is provided with a plurality of air holes, and air in the second air channel is exhausted from the air holes; a powder adding mechanism is arranged on one side of the first motor and connected with the top wall of the shell. The powder adding mechanism comprises a discharging pipe, the discharging pipe is connected with a conveying pipe, the conveying pipe is connected with a material guiding pipe, and the other end of the material guiding pipe is arranged in the shell; and water vapor is prevented from being condensed at the discharging opening and adhered to powder, and the mixing and dispersing effects are better.

Description

Technical Field

[0001] The utility model belongs to the field of mixing and dispersing equipment, in particular to a mixing and dispersing device for producing fluorescent whitening agents. Background Art

[0002] Fluorescent whitening agent is an optical brightener, and its diphenylethylene derivative fluorescent whitening agent is the most important type of fluorescent whitening agent. It occupies a pivotal position in the fluorescent whitening agent industry due to its wide variety and large output. More than 80% of the current fluorescent whitening agent production is diphenylethylene derivatives. These varieties are widely used in textiles, paper, detergents and plastics. The manufacturing process of whitening agents requires multiple processes such as mixing, dispersion, and extraction. In the mixing process, a mixing and dispersion tank is used. The current mixing and dispersion tank has the problem of uneven mixing.

[0003] In the prior art, Chinese patent application No. 202011236291.6 discloses a mixing device for a fluorescent whitening agent composition for papermaking, comprising a device housing, a stirring rod, a dispersion disk, a crushing mechanism and a stirring paddle, wherein a stirring rod is rotatably installed inside the device housing, and a first motor is installed at the bottom end of the device housing at the position of the stirring rod, and a first rotating shaft is installed at the output end of the first motor through a coupling, legs are fixed on both sides of the bottom end of the device housing, and a feed port is arranged at the center position of the top end of the device housing.

[0004] In the current prior art, water vapor will evaporate during the mixing and dispersing process. The evaporated water vapor will gather at the feeding port. During the continuous addition of powder, some powder will stick to the discharge port, which not only causes a waste of raw materials, but also forms lumps due to long-term adhesion, increasing the difficulty of subsequent cleaning and causing blockage of the discharge port. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a mixing and dispersing device for producing fluorescent whitening agents, which at least solves one of the problems of the background technology, preventing water vapor from condensing at the feed port and sticking to the powder, and achieving a better mixing and dispersing effect.

[0006] The utility model provides the following technical solutions:

[0007] A mixing and dispersing device for producing fluorescent whitening agents comprises a shell, a first motor is arranged on the top of the shell, a stirring rod is connected to the first motor, and the stirring rod penetrates the shell and extends to the inside of the shell;

[0008] The lower end of the stirring rod is connected to a stirring member;

[0009] The stirring rod is provided with an air channel 1 inside, the stirring element is provided with an air channel 2 inside, the air channel 1 is connected with the air channel 2, the air channel 1 is connected with a vent pipe, the stirring element is provided with a plurality of air holes, and the gas in the air channel 2 is discharged from the air holes;

[0010] A powder adding mechanism is provided on one side of the first motor, and the powder adding mechanism is connected to the top wall of the housing;

[0011] The powder adding mechanism comprises a feeding pipe, the feeding pipe is connected to a conveying pipe, the conveying pipe is connected to a material guiding pipe, and the other end of the material guiding pipe is arranged inside the shell;

[0012] A water supply pipe is provided on the top of the shell;

[0013] A discharge pipe is connected to the bottom of the shell.

[0014] Preferably, the first motor is provided with a fixed tube, which is connected to the housing via the fixed tube, and the stirring rod is arranged in the fixed tube, and the stirring rod is rotatably connected to the fixed tube.

[0015] Preferably, an annular box is provided on the outer wall of the stirring rod, the annular box is arranged in a fixed tube, the annular box is provided with a sealed bearing, the annular box is rotatably connected to the stirring rod via the sealed bearing, the annular box is connected to a ventilation pipe, and the ventilation pipe is connected to an external air pump.

[0016] Preferably, a feeding port is connected above one end of the feeding pipe, a second motor is provided at the end of the feeding pipe close to the feeding port, the second motor is connected to an auger conveyor, the auger conveyor is arranged in the feeding pipe, and the end of the feeding pipe away from the second motor is connected to the conveying pipe.

[0017] Preferably, the conveying pipe has a "7"-shaped structure, and the other end of the conveying pipe is connected to the material guiding pipe.

[0018] Preferably, the material guide pipe has a "7"-shaped structure, one end of the material guide pipe is connected to a high-pressure fan, and the conveying pipe is connected to the end of the material guide pipe close to the high-pressure fan; a mixing hopper is provided at one end of the material guide pipe located inside the shell, the material guide pipe is arranged directly above the mixing hopper, the outer wall of the mixing hopper is connected to a support rod, and the other end of the support rod is connected to the top wall of the shell.

[0019] Preferably, the interior of the mixing hopper is connected with an annular infusion tube, and the infusion tube is provided with a plurality of nozzles.

[0020] Preferably, a pressure relief valve is provided on the side wall of the shell near the top. When the pressure inside the shell reaches a set threshold, the pressure relief valve automatically opens to exhaust air to prevent excessive pressure inside the shell.

[0021] When the stirring rod drives the stirring piece to stir, the stirring piece is arranged in an "I" shape, and air holes are opened on the side walls of the stirring piece; the ventilation pipe is connected to the air pump to introduce positive pressure gas, and the gas enters the air channel two through the air channel one, and passes through the multiple air holes opened on the stirring piece. When stirring, the gas is ejected from the air holes, and the gas forms bubbles in the mixed liquid. The bubbles form a cutting force on the mixed liquid with the rotational force of the water flow, thereby further improving the uniformity of the mixed liquid, thereby improving the dispersion effect of the mixed liquid.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The utility model discloses a mixing and dispersing device for producing fluorescent whitening agent. A material guide pipe is provided with a high-pressure blower to blow gas into the inside thereof, so that the airflow velocity in the material guide pipe is accelerated and the pressure is reduced. The powder in the conveying pipe is adsorbed into the material guide pipe and follows the material guide pipe into a mixing hopper in a shell. When entering the mixing hopper, the powder is sprayed in the form of smoke due to the existence of the airflow, so that the powder is better dispersed and helps to be fully mixed with the liquid material.

[0024] The liquid guide tube is blown dry by a high-pressure fan to further prevent the powder from sticking together. The mixed liquid is then stirred and mixed. After the mixed liquid reaches a qualified dispersion effect, it is discharged through a discharge pipe. Finally, the liquid guide tube is cleaned through an infusion tube and a nozzle. At the same time, the inside of the shell is cleaned, and the liquid guide tube and the inside of the shell are blown dry by a high-pressure fan to prevent water vapor from condensing and gathering on the liquid guide tube, which would cause the powder to stick to the liquid guide tube when used next time.

[0025] The ventilation pipe is connected to the air pump to introduce positive pressure gas. The gas enters the air channel two through the air channel one, and is ejected from the air holes through the multiple air holes opened on the stirring element during stirring. The gas forms bubbles in the mixed liquid. The bubbles form a cutting force on the mixed liquid with the rotational force of the water flow, further improving the uniformity of the mixed liquid, thereby improving the dispersion effect of the mixed liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the following is a brief introduction to the drawings required for use in the implementation mode. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0028] Figure 2 It is a schematic diagram of the powder adding mechanism of the utility model.

[0029] Figure 3 It is a schematic diagram of the enlarged structure of the A part of the utility model.

[0030] Figure 4 It is a schematic diagram of the mixed material structure of the utility model.

[0031] Figure 5 It is a schematic diagram of the structure of the stirring element of the utility model. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the implementation mode of the utility model clearer, the technical solution in the implementation mode of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation mode of the utility model. Obviously, the described implementation mode is a part of the implementation mode of the utility model, not all the implementation modes. Based on the implementation mode in the utility model, all other implementation modes obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0034] Embodiment 1

[0035] refer to Figure 1-5 A mixing and dispersing device for producing fluorescent whitening agents comprises a shell 1, a first motor 2 is arranged on the top of the shell 1, the first motor 2 is connected to a stirring rod 3, the stirring rod 3 penetrates the shell 1 and extends to the inside of the shell 1; the lower end of the stirring rod 3 is connected to a stirring member 4; an air channel 1 11 is arranged inside the stirring rod 3, an air channel 2 41 is arranged inside the stirring member 4, the air channel 1 11 is communicated with the air channel 2 41, the air channel 1 11 is connected to a vent pipe 8, the stirring member 4 is provided with a plurality of air holes 42, and the gas in the air channel 2 41 is discharged from the air holes 42; a powder adding mechanism 6 is arranged on one side of the first motor 2, and the powder adding mechanism 6 is connected to the top wall of the shell 1; the powder adding mechanism 6 comprises a feeding pipe 61, the feeding pipe 61 is connected to a conveying pipe 65, the conveying pipe 65 is connected to a material guide pipe 66, and the other end of the material guide pipe 66 is arranged inside the shell 1; a water adding pipe 7 is arranged on the top of the shell 1; a discharge pipe 5 is connected to the bottom of the shell 1.

[0036] The first motor 2 is provided with a fixed tube 10, which is connected to the housing 1 through the fixed tube 10. The stirring rod 3 is arranged in the fixed tube 10, and the stirring rod 3 is rotatably connected to the fixed tube 10. The outer wall of the stirring rod 3 is provided with an annular box 9, which is arranged in the fixed tube 10. The annular box 9 is provided with a sealed bearing 12, and the annular box 9 is rotatably connected to the stirring rod 3 through the sealed bearing 12. The annular box 9 is connected to a vent pipe 8, and the vent pipe 8 is connected to an external air pump. A feeding port 64 is connected to the upper end of the feeding tube 61, and a second motor 62 is provided at the end of the feeding tube 61 close to the feeding port 64. The second motor 62 is connected to an auger conveyor 63, and the auger conveyor 63 is arranged in the feeding tube 61. The end of the feeding tube 61 away from the second motor 62 is connected to a conveying pipe 65. The conveying pipe 65 is a "7"-shaped structure, and the other end of the conveying pipe 65 is connected to a guide pipe 66.

[0037] The guide pipe 66 is a "7"-shaped structure, one end of the guide pipe 66 is connected to a high-pressure blower 67, and the delivery pipe 65 is connected to the end of the guide pipe 66 near the high-pressure blower 67; a mixing hopper 68 is provided at one end of the guide pipe 66 located inside the shell 1, and the guide pipe 66 is arranged just above the mixing hopper 68, and the outer wall of the mixing hopper 68 is connected to a support rod 611, and the other end of the support rod 611 is connected to the top wall of the shell 1. The interior of the mixing hopper 68 is connected to a ring-shaped infusion pipe 69, and a plurality of nozzles 610 are provided on the infusion pipe 69.

[0038] Embodiment 2:

[0039] On the basis of the first embodiment, a pressure relief valve 13 is provided near the top of the side wall of the shell 1. When the pressure inside the shell 1 reaches a set threshold, the pressure relief valve 13 automatically opens to exhaust air to prevent the internal pressure of the shell 1 from being too high.

[0040] In this scheme, when adding materials, the raw materials of the fluorescent whitening agent are added from the feeding port 64, and the second motor 62 is started to drive the auger conveyor 63 to convey the powder to the conveying pipe 65. The raw materials fall into the guide pipe 66 through the conveying pipe 65. The guide pipe 66 blows gas into the inside of the guide pipe 66 through the high-pressure fan 67. The air flow rate in the guide pipe 66 is accelerated and the pressure is reduced. The powder in the conveying pipe 65 is adsorbed into the guide pipe 66 and follows the guide pipe 66 into the mixing hopper 68 in the shell 1. When entering the mixing hopper 68, the powder is sprayed in the form of smoke due to the presence of airflow, and the dispersion degree of the powder is better, which is helpful to fully mix with the liquid material; when the powder falls into the mixing hopper 68, the water pump connected to the water adding pipe 7 supplies water to the water adding pipe 7, and the water is sprayed out through the nozzle 610 set on the liquid infusion pipe 69, and the sprayed liquid is fully mixed with the smoke-type powder, which improves the mixing efficiency of the powder and liquid and increases the uniformity of mixing; when adding materials, the air pressure in the guide pipe 66 is large, and the water mist sprayed from the nozzle 610 It will not enter the guide tube 66, and the sprayed liquid can clean the outer wall of the guide tube 66 to prevent the powder from sticking to the outer wall of the guide tube 66; after the powder is added, water is continuously supplied to the infusion tube 69 to clean the powder adhering to the inner and outer walls of the guide tube until it is clean; then the high-pressure fan 67 is used to blow air into the guide tube to dry it and further prevent the powder from sticking; then the mixed liquid is stirred and mixed, and the mixed liquid achieves a qualified dispersion effect Afterwards, it is discharged through the discharge pipe 5, and finally the liquid guide tube is cleaned through the infusion tube 69 and the nozzle 610, and the inside of the shell 1 is cleaned at the same time, and the liquid guide tube and the inside of the shell 1 are blown dry by the high-pressure fan 67 to prevent water vapor from condensing and gathering on the liquid guide tube, causing the powder to stick to the liquid guide tube when used next time; during the above-mentioned feeding process, due to the positive pressure in the liquid guide tube, water vapor will not enter the conveying pipe 65 through the liquid guide tube, and will not cause the powder in the auger conveyor 63 to become damp and compacted.

[0041] When the stirring rod 3 drives the stirring member 4 to stir, the stirring member 4 is arranged in an "I" shape, and the side walls of the stirring member 4 are provided with air holes 42; the ventilation pipe 8 is connected to the air pump to introduce positive pressure gas, and the gas enters the air channel 2 41 through the air channel 1 11, and passes through the multiple air holes 42 opened on the stirring member 4. When stirring, the gas is ejected from the air holes 42, and the gas forms bubbles in the mixed liquid. The bubbles form a cutting force on the mixed liquid with the rotational force of the water flow, further improving the uniformity of the mixed liquid, thereby improving the dispersion effect of the mixed liquid.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A mixing and dispersing device for producing fluorescent whitening agents, characterized in that: It comprises a shell (1), a first motor (2) is provided on the top of the shell (1), the first motor (2) is connected to a stirring rod (3), and the stirring rod (3) passes through the shell (1) and extends into the interior of the shell (1); The lower end of the stirring rod (3) is connected to the stirring member (4); The stirring rod (3) is provided with an air channel 1 (11) inside, the stirring member (4) is provided with an air channel 2 (41) inside, the air channel 1 (11) is communicated with the air channel 2 (41), the air channel 1 (11) is connected with a vent pipe (8), the stirring member (4) is provided with a plurality of air holes (42), and the gas in the air channel 2 (41) is discharged from the air holes (42); A powder adding mechanism (6) is provided on one side of the first motor (2), and the powder adding mechanism (6) is connected to the top wall of the housing (1); The powder adding mechanism (6) comprises a feed pipe (61), the feed pipe (61) is connected to a delivery pipe (65), the delivery pipe (65) is connected to a guide pipe (66), and the other end of the guide pipe (66) is arranged inside the housing (1); A water supply pipe (7) is provided on the top of the shell (1); A discharge pipe (5) is connected to the bottom of the shell (1).

2. A mixing and dispersing device for producing fluorescent whitening agents according to claim 1, characterized in that: The first motor (2) is provided with a fixed tube (10) and is connected to the housing (1) via the fixed tube (10); the stirring rod (3) is arranged in the fixed tube (10), and the stirring rod (3) is rotatably connected to the fixed tube (10).

3. A mixing and dispersing device for producing fluorescent whitening agents according to claim 2, characterized in that: The outer wall of the stirring rod (3) is provided with an annular box (9), the annular box (9) is arranged in a fixed tube (10), the annular box (9) is provided with a sealing bearing (12), the annular box (9) is rotatably connected to the stirring rod (3) via the sealing bearing (12), the annular box (9) is connected to a ventilation pipe (8), and the ventilation pipe (8) is connected to an external air pump.

4. A mixing and dispersing device for producing fluorescent whitening agents according to claim 1, characterized in that: A feeding port (64) is connected to the top of one end of the feeding pipe (61); a second motor (62) is provided at the end of the feeding pipe (61) close to the feeding port (64); the second motor (62) is connected to an auger conveyor (63); the auger conveyor (63) is arranged in the feeding pipe (61); and the end of the feeding pipe (61) away from the second motor (62) is connected to a conveying pipe (65).

5. A mixing and dispersing device for producing fluorescent whitening agents according to claim 1 or 4, characterized in that: The conveying pipe (65) has a "7"-shaped structure, and the other end of the conveying pipe (65) is connected to the material guide pipe (66).

6. A mixing and dispersing device for producing fluorescent whitening agents according to claim 1, characterized in that: The material guide pipe (66) has a "7"-shaped structure, one end of the material guide pipe (66) is connected to a high-pressure fan (67), and the conveying pipe (65) is connected to one end of the material guide pipe (66) close to the high-pressure fan (67); a mixing hopper (68) is provided at one end of the material guide pipe (66) located inside the shell (1), the material guide pipe (66) is arranged directly above the mixing hopper (68), the outer wall of the mixing hopper (68) is connected to a support rod (611), and the other end of the support rod (611) is connected to the top wall of the shell (1).

7. A mixing and dispersing device for producing fluorescent whitening agents according to claim 6, characterized in that: The interior of the mixing hopper (68) is connected to a ring-shaped liquid infusion pipe (69), and a plurality of nozzles (610) are provided on the liquid infusion pipe (69).

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