A nozzle assembly and spray drying apparatus for producing coupling agent powder.

Abstract

This invention discloses a nozzle assembly and spray drying device for producing coupling agent powder. The nozzle assembly includes an inlet pipe, a liquid distribution pipe, and an atomizing nozzle head. The inlet pipe is connected to the liquid distribution pipe, which has several nozzle seats. The atomizing nozzle head is detachably connected to the nozzle seats. A hot air drying nozzle is provided on the outlet end face of the atomizing nozzle head. The hot air drying nozzle has a ring structure and surrounds the spray port of the atomizing nozzle head. Hot air branch pipes are connected to the hot air drying nozzle head, and all hot air branch pipes are detachably connected to the hot air distribution pipe. This invention uses the ring structure of the hot air drying nozzle to surround the atomizing nozzle head, forming a unidirectional enveloping hot air flow. The hot air fully contacts the hollow cone droplet group, allowing the solvent on the droplet surface to evaporate and dry within 0.5-2 seconds. This prevents the undried coupling agent powder from sticking to the wall or clumping, improving the particle uniformity, product yield, and quality of the powder product.

Description

Technical Field

[0001] This utility model relates to the field of coupling agent production technology, specifically to a nozzle assembly and spray drying device for producing coupling agent powder. Background Technology

[0002] Coupling agents are organosilicon compounds with reactive groups that can bind to both inorganic and organic materials. They are widely used in the coatings, rubber, and pigment industries. Coupling agents are available in flake or powder form. When using spray drying to produce powdered coupling agents, poor drying can cause the sprayed, undried powder to stick to the walls or clump, resulting in poor particle uniformity and reduced product yield and quality. Utility Model Content

[0003] The main objective of this invention is to overcome the deficiencies of the prior art and provide a nozzle assembly for producing coupling agent powder and a spray drying device for producing coupling agent powder.

[0004] To achieve the above objectives, this utility model proposes a nozzle assembly for producing coupling agent powder, comprising a liquid inlet pipe, a liquid distribution pipe, and an atomizing nozzle head. The liquid inlet pipe is connected to the liquid distribution pipe, and a plurality of nozzle seats are arranged on the liquid distribution pipe. The atomizing nozzle head is detachably connected to the nozzle seats. A hot air drying nozzle is provided on the outlet end face of the atomizing nozzle head. The hot air drying nozzle has an annular structure and surrounds the spray port of the atomizing nozzle head. The direction of the hot air sprayed from the spray port of the hot air drying nozzle corresponds to the direction of the droplets sprayed from the spray port of the atomizing nozzle head. A hot air branch pipe is connected to the hot air drying nozzle head, and all hot air branch pipes are detachably connected to the hot air distribution pipe.

[0005] In a further optimized technical solution, the nozzle seat is provided with an internal thread section, the atomizing nozzle head is provided with an external thread section corresponding to the internal thread section, the internal thread section is provided with a stepped locking surface near the end of the liquid distribution pipe, and a flow limiting plate is provided at the stepped locking surface.

[0006] In a further optimized technical solution, the liquid inlet pipe is vertically connected to the middle of the liquid distribution pipe, and the liquid inlet pipe and the liquid distribution pipe are integrally formed.

[0007] In a further optimized technical solution, the inner diameter of the liquid distribution pipe gradually increases from the middle along the length of both ends.

[0008] In a further optimized technical solution, both the inlet pipe and the liquid distribution pipe are metal pipes, and an electromagnetic heating coil is wound around their outer surface.

[0009] In a further optimized technical solution, the electromagnetic heating coil is surrounded by a heat-insulating sleeve.

[0010] This utility model also proposes a spray drying device for producing coupling agent powder, including the above-mentioned nozzle assembly, drying chamber, booster pump and hot air blower for producing coupling agent powder. The nozzle assembly is disposed in the drying chamber. The discharge end of the booster pump is connected to the liquid inlet pipe of the nozzle assembly through a liquid inlet hose. The hot air blower is connected to the hot air distribution pipe through an air inlet hose.

[0011] In a further optimized technical solution, the feed end of the booster pump is connected to the outlet of the liquid storage tank, and the inlet end of the liquid storage tank is equipped with a filter screen.

[0012] In a further optimized technical solution, a support column is fixedly installed on the floor of the drying chamber, and an installation groove is opened on the support column, with the nozzle assembly mounted in the installation groove.

[0013] In a further optimized technical solution, mounting shafts are symmetrically arranged on both sides of the liquid inlet pipe, and mounting holes corresponding to the mounting shafts are opened on the side walls of the support column. Locking nuts are provided on both sides of the mounting shafts.

[0014] The beneficial effects of this invention include: the annular hot air drying nozzle surrounds the atomizing nozzle head to form a unidirectional enveloping hot air flow, and the hot air fully contacts the hollow cone droplet group, so that the solvent on the droplet surface can be evaporated and dried within 0.5-2 seconds, avoiding the undried coupling agent powder from sticking to the wall or clumping, and improving the uniformity of powder particles, product yield and quality; compared with the traditional tangential hot air drying after atomization, the hot air drying nozzle of this invention can isolate the cross interference of adjacent mist cones, prevent droplets from colliding and merging to form large particles, and reduce the sticking or clumping of undried powder from the source. Attached Figure Description

[0015] Figure 1 This is an overall schematic diagram of the nozzle assembly in an embodiment of this utility model.

[0016] Figure 2 This is an exploded view of the nozzle assembly installation in an embodiment of this utility model.

[0017] Figure 3 yes Figure 2 A magnified view of a portion of point A in the middle.

[0018] Figure 4 This is a schematic diagram of the spray drying device in an embodiment of this utility model.

[0019] Reference numerals: 1 Nozzle assembly; 101 Liquid inlet pipe; 102 Liquid distribution pipe; 103 Atomizing nozzle head; 1031 External thread section; 104 Nozzle seat; 1041 Internal thread section; 1042 Stepped locking surface; 105 Hot air drying nozzle; 106 Hot air branch pipe; 107 Hot air distribution pipe; 108 Flow limiting orifice plate; 109 Electromagnetic heating coil; 110 Thermal insulation sleeve; 111 Mounting shaft; 112 Locking nut; 2 Drying chamber; 3 Booster pump; 4 Hot air blower; 5 Liquid inlet hose; 6 Air inlet hose; 7 Liquid temporary storage tank; 8 Filter screen; 9 Support column; 901 Mounting groove; 902 Mounting hole. Detailed Implementation

[0020] To make the technical problems, technical solutions, and beneficial effects of the embodiments of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0021] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component. Furthermore, a connection can be for both fixing and circuit connection purposes.

[0022] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0024] Example 1

[0025] Please see Figures 1 to 3This utility model discloses a nozzle assembly 1 for producing coupling agent powder, including a liquid inlet pipe 101, a liquid distribution pipe 102, and an atomizing nozzle head 103. The liquid inlet pipe 101 is connected to the liquid distribution pipe 102. Several nozzle seats 104 are arranged in a straight line on the liquid distribution pipe 102. The atomizing nozzle head 103 is detachably connected to the nozzle seat 104. A hot air drying nozzle 105 is provided on the outlet end face of the atomizing nozzle head 103. The hot air drying nozzle 105 has a ring structure and surrounds the spray port of the atomizing nozzle head 103. The direction of the hot air sprayed from the spray port of the hot air drying nozzle 105 corresponds to the direction of the droplets sprayed from the spray port of the atomizing nozzle head 103. A hot air branch pipe 106 is connected to the hot air drying nozzle 105. The hot air branch pipe 106 can be detachably connected to the hot air distribution pipe 107. Specifically, the liquid inlet pipe 101 is vertically connected to the middle of the liquid distribution pipe 102. The liquid inlet pipe 101 and the liquid distribution pipe 102 are integrally formed, forming a T-shaped structure, which eliminates local turbulence caused by the weld and reduces the risk of particle deposition. The nozzle seats 104 (atomizing nozzle heads 103) on both sides are symmetrically arranged, so that the pipe length from the atomizing nozzle heads 103 on both sides to the liquid inlet pipe 101 is symmetrical, balancing the pressure and significantly reducing the flow resistance difference. The atomizing nozzle head 103 is a pressure nozzle, and the shape of the sprayed droplets is a hollow conical mist. Furthermore, the angle of the hot air sprayed from the nozzle of the hot air drying nozzle 105 is greater than 5° of the atomization angle. For example, if the atomization angle is 60°, then the hot air spray angle is 65°. In this embodiment, a ring-shaped hot air drying nozzle 105 surrounds the atomizing nozzle head 103 to form a unidirectional enveloping hot air flow. The hot air makes full contact with the hollow cone droplet group, avoiding mutual interference between adjacent hollow cone droplet groups. This allows the solvent on the droplet surface to evaporate and dry within 0.5-2 seconds, preventing the undried coupling agent powder from sticking to the wall or clumping, and improving the uniformity of powder product particles, product yield, and quality.

[0026] In a preferred embodiment, an internal thread section 1041 is provided in the nozzle seat 104, and an external thread section 1031 corresponding to the internal thread section 1041 is provided on the atomizing nozzle head 103. A stepped locking surface 1042 is provided at the end of the internal thread section 1041 near the liquid distribution pipe 102, and a flow-limiting orifice plate 108 is provided at the stepped locking surface 1042. The atomizing nozzle head 103 and the nozzle seat 104 are connected by a threaded connection for easy disassembly and replacement. The flow-limiting orifice plate 108 is positioned by being tightened and locked onto the stepped locking surface 1042 by the atomizing nozzle head 103. By installing the flow-limiting orifice plate 108 in front of each atomizing nozzle head 103, the orifice diameter on the flow-limiting orifice plate 108 is adjusted according to the distance between the atomizing nozzle head 103 and the liquid inlet pipe 101, with a smaller orifice diameter at the near end and a larger orifice diameter at the far end, the inlet pressure of each atomizing nozzle head 103 is forced to be consistent, avoiding uneven atomization caused by sudden pressure changes.

[0027] In a preferred embodiment, the inner diameter of the liquid distribution pipe 102 gradually increases from the middle along the length of both ends. When the liquid enters the middle of the liquid distribution pipe 102 from the inlet pipe 101, if the liquid distribution pipe 102 is a straight pipe of equal diameter, the pressure will gradually decrease due to frictional resistance as the fluid flows towards the distal atomizing nozzle head 103, resulting in a lower flow rate at the distal atomizing nozzle head 103 than at the proximal end. The gradually increasing inner diameter design can compensate for the pressure loss and further improve the atomization uniformity.

[0028] In a preferred embodiment, both the inlet pipe 101 and the liquid distribution pipe 102 are metal pipes, with an electromagnetic heating coil 109 wound around their outer surface. When a high-frequency alternating current is applied to the electromagnetic heating coil 109, an alternating magnetic field is generated, inducing eddy currents inside the metal pipe. The pipe itself heats up and this heat is directly conducted to the liquid inside, heating the liquid inside the pipe (the heating temperature is lower than the decomposition temperature of the coupling agent) before stopping or starting the production process, thus preventing the liquid from cooling and solidifying in the pipe and causing blockage.

[0029] In a preferred embodiment, a heat insulation sleeve 110 is wrapped around the electromagnetic heating coil 109. The heat insulation sleeve 110 is made of high-temperature resistant fiber. The heat insulation sleeve 110 prevents heat from diffusing into the environment, allowing more heat energy to be concentrated in the liquid pipeline and reducing ineffective losses.

[0030] Example 2

[0031] Please see Figures 1 to 4 This utility model also discloses a spray drying device for producing coupling agent powder, including the above-mentioned nozzle assembly 1, drying chamber 2, booster pump 3 and hot air blower 4. The nozzle assembly 1 is installed in the drying chamber 2. The discharge end of the booster pump 3 is connected to the inlet pipe 101 of the nozzle assembly 1 through the inlet hose 5. The hot air blower 4 is connected to the hot air distribution pipe 107 through the air inlet hose 6. The booster pump 3 is a plunger pump. The feed end of the booster pump 3 is connected to the outlet of the liquid storage tank 7. The inlet end of the liquid storage tank 7 is provided with a filter screen 8. The coupling agent liquid produced by the reaction is filtered through the filter screen 8 and enters the liquid storage tank 7. The booster pump 3 draws liquid from the liquid storage tank 7 to pressurize it. The coupling agent liquid enters the drying chamber 2 through the liquid inlet hose 5 and is connected to the liquid inlet pipe 101 of the nozzle assembly 1. The high-pressure liquid enters the liquid distribution pipe 102 of the nozzle assembly 1 and is sprayed out from the atomizing nozzle head 103 to form a hollow cone droplet group. At the same time, the hot air generated by the hot air blower 4 enters the annular hot air drying nozzle 105 through the air inlet hose 6 and the hot air distribution pipe 107. The sprayed hot air surrounds the hollow cone droplet group for evaporation and drying, improving the drying efficiency and preventing the undried coupling agent powder from sticking to the wall or clumping, thereby improving the uniformity of powder product particles, product yield and quality.

[0032] In a specific example, a support column 9 is fixedly installed on the floor of the drying chamber 2, and an installation groove 901 is provided on the support column 9. The nozzle assembly 1 is mounted in the installation groove 901. Installation shafts 111 are symmetrically provided on both sides of the liquid inlet pipe 101. The side wall of the support column 9 is provided with installation holes 902 corresponding to the installation shafts 111. The installation shafts 111 are inserted into the installation holes 902, so that the nozzle assembly 1 can be rotated to adjust the spray angle. Locking nuts 112 are provided on both sides of the installation shafts 111. After the angle is adjusted, the locking nuts 112 are used to lock and fix the nozzle assembly 1.

[0033] The above description, in conjunction with specific / preferred embodiments, provides a further detailed explanation of the present invention and should not be construed as limiting the specific implementation of the present invention to these descriptions. For those skilled in the art, various substitutions or modifications can be made to these described embodiments without departing from the concept of the present invention, and all such substitutions or modifications should be considered within the protection scope of the present invention. In the description of this specification, the reference to terms such as "an embodiment," "some embodiments," "preferred embodiment," "example," "specific example," or "some examples," etc., indicates that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the described specific features, structures, materials, or characteristics can be combined in a suitable manner in any one or more embodiments or examples. Without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification and the features of different embodiments or examples. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations may be made herein without departing from the scope of protection of the patent application.

Claims

1. A nozzle assembly for producing coupling agent powder, characterized in that: The device includes an inlet pipe, a liquid distribution pipe, and an atomizing nozzle head. The inlet pipe is connected to the liquid distribution pipe, and several nozzle seats are arranged on the liquid distribution pipe. The atomizing nozzle head is detachably connected to the nozzle seats. A hot air drying nozzle is provided on the outlet end face of the atomizing nozzle head. The hot air drying nozzle has a ring structure and surrounds the spray port of the atomizing nozzle head. The direction of the hot air sprayed from the spray port of the hot air drying nozzle corresponds to the direction of the droplets sprayed from the spray port of the atomizing nozzle head. Hot air branch pipes are connected to the hot air drying nozzle head, and all hot air branch pipes are detachably connected to the hot air distribution pipe.

2. The nozzle assembly for producing a coupling agent powder material according to claim 1, characterized by: The nozzle seat has an internal thread section, and the atomizing nozzle head has an external thread section corresponding to the internal thread section. The internal thread section has a stepped locking surface near the end of the liquid distribution pipe, and a flow limiting plate is provided at the stepped locking surface.

3. The nozzle assembly for producing a coupling agent powder material as claimed in claim 2, characterized in that: The inlet pipe is vertically connected to the middle of the liquid distribution pipe, and the inlet pipe and the liquid distribution pipe are integrally formed.

4. The nozzle assembly for producing a coupling agent powder material of claim 3, wherein: The inner diameter of the liquid distribution pipe gradually increases from the middle along the length of both ends.

5. The nozzle assembly for producing a coupling agent powder material as claimed in claim 4, wherein: Both the inlet pipe and the feed distribution pipe are metal pipes, and electromagnetic heating coils are wound around their outer surfaces.

6. The nozzle assembly for producing a coupling agent powder material as claimed in claim 5, characterized by: The electromagnetic heating coil is surrounded by a heat-insulating sleeve.

7. A spray drying apparatus for producing a coupling agent powder, characterized by: The device includes a nozzle assembly, a drying chamber, a booster pump, and a hot air blower as described in any one of claims 1 to 6 for producing coupling agent powder. The nozzle assembly is disposed in the drying chamber. The discharge end of the booster pump is connected to the liquid inlet pipe of the nozzle assembly via a liquid inlet hose. The hot air blower is connected to the hot air distribution pipe via an air inlet hose.

8. The spray drying apparatus for producing a coupling agent powder as claimed in claim 7, wherein: The feed end of the booster pump is connected to the outlet of the liquid storage tank, and the inlet end of the liquid storage tank is equipped with a filter screen.

9. The spray drying apparatus for producing coupling agent powder as described in claim 7, characterized in that: A support column is fixedly installed on the floor of the drying chamber, and an installation groove is opened on the support column, and the nozzle assembly is mounted in the installation groove.

10. The spray drying apparatus for producing a coupling agent powder as claimed in claim 9, wherein: The inlet pipe is symmetrically provided with mounting shafts on both sides, and the side wall of the support column is provided with mounting holes corresponding to the mounting shafts. Locking nuts are provided on both sides of the mounting shafts.

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