Pressure spray drying equipment

Abstract

The utility model discloses pressure spray drying equipment which comprises a drying tower, a rotating joint is arranged at the center of the top of the drying tower in a penetrating mode, a rotating shaft is arranged at the top of the rotating joint, the rotating shaft and the rotating joint are coaxially arranged, the rotating shaft is driven by a rotating unit to rotate, a distributor is arranged at the bottom of the rotating joint, and the distributor is communicated with the drying tower. A plurality of air injection units are uniformly distributed on the periphery of the distributor in the circumferential direction, an atomizing nozzle is arranged below the distributor, the rotary joint is provided with a feeding hole and an air inlet, the air inlet is communicated with the air injection units, and the feeding hole is communicated with the atomizing nozzle; according to the pressure spray drying equipment disclosed by the utility model, the plurality of near-wall gas nozzles are arranged and are matched with the rotating joint and the rotating unit, so that the gas nozzles rotate slowly, a wall-attached gas layer flowing downwards is formed on the inner wall of the drying tower, powder is guided to move downwards, and the sprayed powder is prevented from directly impacting the tower wall.

Description

TECHNICAL FIELD

[0001] The utility model relates to spray drying technology, concretely is a kind of pressure spray drying equipment. BACKGROUND

[0002] Spray drying is a method of systematized technology application in material drying, in the drying chamber, dilute material is atomized, and water is rapidly vaporized in the contact with 150-200 DEG C hot air, and dry product is obtained.The method can directly dry solution, emulsion into powdery or granular product, and evaporation, crushing and other processes can be saved;Pressure spray drying method is to use high-pressure pump to spray material through atomizer (lance) at 70~200 atmospheric pressure, and the material is atomized into 10~200 mist particles, and hot air is directly contacted to exchange heat, and drying is completed in a short time.

[0003] The existing pressure spray drying equipment, semi-wet material can cause the tower wall of drying tower to produce wall sticking phenomenon, the reason is that the sprayed mist contacts tower wall before reaching surface drying, and thus sticks to tower wall, and the powder sticking to tower wall can cause cross contamination between different grades of powder in long-term use, which seriously affects product quality. CONTENT OF UTILITY MODEL

[0004] To solve the defects of the prior art, the utility model provides a kind of pressure spray drying equipment, is equipped with multiple near-wall gas spray head, and the wall-sticking gas layer that flows downward is formed in the inner wall of drying tower, to avoid that the powder sprayed directly hits on tower wall.

[0005] To realize the above technical purpose, the utility model adopts the following technical scheme: a kind of pressure spray drying equipment, including drying tower, the center of the top of the drying tower is penetrated with swivel joint, the top of the swivel joint is equipped with shaft, the shaft is coaxially arranged with swivel joint, the shaft is rotated by the driving of rotating unit, the bottom of the swivel joint is equipped with distributor, the distributor is uniformly distributed with several gas injection units in the outer periphery, the lower of the distributor is equipped with atomizing nozzle, the swivel joint is equipped with feed inlet and air inlet, the air inlet is communicated with gas injection unit, the feed inlet is communicated with atomizing nozzle.

[0006] Preferably, the rotating unit includes a rotating motor, a synchronous belt and two synchronous pulleys, the two synchronous pulleys are respectively sleeved on the shaft and the output shaft of the rotating motor, the rotating motor is fixed to one side of the top of the drying tower, and the synchronous belt is sequentially wound around the two synchronous pulleys and connected end to end.

[0007] Preferably, the gas injection unit includes a shunt pipe and a gas spray head, one end of the shunt pipe is communicated with the distributor, and the gas spray head is communicated with the other end of the shunt pipe, the gas spray head is close to the inner wall of the drying tower and sprays gas flow downward.

[0008] Preferably, the end of the distribution pipe is provided with a distribution plate, the middle of the distribution plate is fixedly connected with the distribution pipe, and the dry gas nozzles are uniformly distributed on one side of the distribution plate relative to the distributor.

[0009] Preferably, the rotary joint is a two-way rotary joint.

[0010] Preferably, the distributor is internally provided with a material flow channel and an air flow channel, the material flow channel is communicated with the feeding port and the atomizing nozzle, the air flow channel is arc-shaped and communicated with the air inlet, a plurality of distribution channels are uniformly arranged on the circumference of the distributor, and the distribution channels are communicated with the air flow channel and the distribution pipe.

[0011] In conclusion, the pressure spray drying equipment has the following technical effects:

[0012] The pressure spray drying equipment has the following technical effects: BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a structural schematic view of the pressure spray drying equipment of the utility model;

[0014] Figure 2 is a structural schematic view of a rotary unit, a rotary joint and a gas injection unit of the pressure spray drying equipment of the utility model;

[0015] Figure 3 is a structural schematic view of a gas injection unit of the pressure spray drying equipment of the utility model;

[0016] Figure 4 is a structural schematic view of a distributor of the pressure spray drying equipment of the utility model;

[0017] The accompanying drawings of the specification are explained as follows: 1, drying tower; 2, discharge port; 3, distributor; 4, atomizing nozzle; 5, distribution pipe; 6, gas nozzle; 7, rotary joint; 8, rotating shaft; 9, synchronous belt; 10, rotary motor; 11, synchronous wheel; 12, feeding port; 13, air inlet; 14, distribution plate; 15, material flow channel; 16, air flow channel; 17, distribution channel. DETAILED DESCRIPTION

[0018] The utility model is further explained in detail in combination with the drawings as follows.

[0019] The specific embodiment is only an explanation of the utility model, and is not a limitation of the utility model, and a person skilled in the art can make a modification without creative contribution according to the need after reading the specification, but as long as the modification is within the scope of the claims of the utility model, is protected by the patent law.

[0020] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model indicated or implied by the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0021] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0022] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and other terms should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0023] In the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be indirectly contacted through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0024] Embodiment one:

[0025] As Figure 1As shown in the figure, a pressure spray drying device comprises a drying tower 1, a rotating joint 7 is arranged at the center of the top of the drying tower 1, a rotating shaft 8 is arranged at the top of the rotating joint 7, the rotating shaft 8 is coaxially arranged with the rotating joint 7, the rotating shaft 8 is driven to rotate by a rotating unit, a distributor 3 is arranged at the bottom of the rotating joint 7, a plurality of air jet units are uniformly distributed on the outer periphery of the distributor 3, an atomizing nozzle 4 is arranged below the distributor 3, the rotating joint 7 is provided with a feeding port 12 and an air inlet 13, the air inlet 13 is communicated with the air jet unit, and the feeding port 12 is communicated with the atomizing nozzle 4.

[0026] The material enters the material flow channel 15 from the feeding port 12 and is sprayed out from the atomizing nozzle 4, the clean air enters from the air inlet 13, passes through the air flow channel 16 and the shunt channel 17, is shunted to the shunt pipe 5, and is sprayed out from the air jet nozzle 6, the air jet nozzle 6 slowly rotates to form a downward flowing wall-attached air layer on the inner wall of the drying tower 1.

[0027] The pressure spray drying device of the embodiment is provided with a plurality of wall-adjacent air jet nozzles 6, and is matched with the rotating joint 7 and the rotating unit, so that the air jet nozzle 6 slowly rotates to form a downward flowing wall-attached air layer on the inner wall of the drying tower 1, and the powder is guided to move downward, thereby avoiding that the sprayed powder directly impacts on the tower wall.

[0028] As shown in the figure, Figure 2 The rotating unit comprises a rotating motor 10, a synchronous belt 9 and two synchronous wheels 11, the two synchronous wheels 11 are respectively sleeved on the rotating shaft 8 and the output shaft of the rotating motor 10, the rotating motor 10 is fixed to one side of the top of the drying tower 1, and the synchronous belt 9 is sequentially wound around the two synchronous wheels 11 and connected at the head and tail.

[0029] As shown in the figure, Figure 3 The air jet unit comprises the shunt pipe 5 and the air jet nozzle 6, one end of the shunt pipe 5 is communicated with the distributor 3, the air jet nozzle 6 is communicated with the other end of the shunt pipe 5, and the air jet nozzle 6 is close to the inner wall of the drying tower 1 and sprays air flow downward.

[0030] The shunt pipe 5 is provided with a distribution plate, the middle part of the distribution plate 14 is fixedly connected with the shunt pipe 5, and the air jet nozzles 6 are uniformly distributed on one side of the distribution plate 14 relative to the distributor 3.

[0031] The rotating joint 7 is a two-way rotating joint 7.

[0032] As shown in the figure, Figure 4 The distributor 3 is internally provided with a material flow channel 15 and an air flow channel 16, the material flow channel 15 is communicated with the feeding port 12 and the atomizing nozzle 4, the air flow channel 16 is arc-shaped and communicated with the air inlet 13, a plurality of shunt channels 17 are uniformly arranged on the distributor 3 in the circumferential direction, and the shunt channels 17 are communicated with the air flow channel 16 and the shunt pipe 5.

[0033] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Any simple modification, equivalent change and modification made according to the technical essence of the present application to the above embodiments are within the scope of the technical scheme of the present application.

Claims

1. A pressure spray drying device, comprising a drying tower, characterized in that, A rotary joint is installed at the center of the top of the drying tower. A rotating shaft is provided at the top of the rotary joint and is coaxial with the rotary joint. The rotating shaft is driven to rotate by a rotating unit. A distributor is provided at the bottom of the rotary joint. Several jet units are evenly distributed around the outer periphery of the distributor. An atomizing nozzle is provided below the distributor. The rotary joint has a feed inlet and an air inlet. The air inlet is connected to the jet units, and the feed inlet is connected to the atomizing nozzle.

2. The pressure spray drying equipment according to claim 1, characterized in that, The rotating unit includes a rotary motor, a synchronous belt, and two synchronous pulleys. The two synchronous pulleys are respectively fitted onto the rotating shaft and the output shaft of the rotary motor. The rotary motor is fixed to one side of the top of the drying tower. The synchronous belt passes around the two synchronous pulleys in sequence and is connected end to end.

3. The pressure spray drying equipment according to claim 1, characterized in that, The jet unit includes a split pipe and an air nozzle. One end of the split pipe is connected to a distributor, and the air nozzle is connected to the other end of the split pipe. The air nozzle is close to the inner wall of the drying tower and sprays air downwards.

4. The pressure spray drying equipment according to claim 3, characterized in that, The end of the diversion pipe is provided with a distribution plate, the middle part of the distribution plate is fixedly connected to the diversion pipe, and the air nozzles are evenly distributed on the side of the distribution plate relative to the distributor.

5. The pressure spray drying equipment according to claim 1, characterized in that, The rotary joint is a two-way rotary joint.

6. The pressure spray drying equipment according to claim 3, characterized in that, The distributor is provided with a material flow channel and an air flow channel. The material flow channel is connected to the feed inlet and the atomizing nozzle. The air flow channel is arc-shaped and connected to the air inlet. The distributor is provided with several branch channels evenly distributed around its circumference. The branch channels are connected to the air flow channel and the branch pipe.

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