Anhydrous magnesium sulfate fluidization drying device

Abstract

The utility model relates to the technical field of magnesium sulfate production equipment, in particular to an anhydrous magnesium sulfate fluidization drying device which not only can collect and recycle water vapor and hot air, preheat raw materials and improve the energy utilization rate, but also can accelerate discharge of anhydrous magnesium sulfate and avoid product waste. Comprising a heating mechanism; the device comprises a heating mechanism, and further comprises a conveying mechanism, a collecting mechanism, an air exhaust mechanism, a steam exhaust mechanism and a preheating mechanism, the conveying mechanism is installed on the heating mechanism and drives anhydrous magnesium sulfate to be conveyed upwards, and the collecting mechanism is installed on the heating mechanism and collects dried anhydrous magnesium sulfate. The air extracting mechanism is mounted on the collecting mechanism and accelerates the anhydrous magnesium sulfate to enter the collecting mechanism, the steam exhausting mechanism is mounted on the air extracting mechanism and extracts steam in time, and the preheating mechanism is mounted on the air extracting mechanism and preheats raw materials.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of magnesium sulfate production equipment, in particular to a kind of anhydrous magnesium sulfate fluidization drying device. BACKGROUND

[0002] Anhydrous magnesium sulfate is an important inorganic compound, and is widely used in fertilizer, feed, medicine, food and leather-making, papermaking and other fields. The existing process of drying / seven water magnesium sulfate calcination to prepare monohydrate magnesium sulfate and anhydrous magnesium sulfate mainly includes rotary drum drying method, single-stage rotary flash drying and fluidized bed drying method.

[0003] The existing anhydrous magnesium sulfate fluidization drying device, for example, the magnesium sulfate drying and calcining device disclosed in the utility model patent with application number 201820699733.2, mainly includes a feeder, a combustion chamber, a drying and calcining machine, a heat exchange cyclone separator, a bag-type dust collector, a conveying screw machine and a system induced draft fan, etc. In use, seven water magnesium sulfate is continuously fed into the first drying chamber by the feeder, while the heat source heats the air in the combustion chamber through the burner, producing hot air that enters the first drying chamber through the system induced draft fan. The seven water magnesium sulfate moves in a fluidized state in the drying chamber, and after first-stage drying, it enters the second drying chamber. The outlet temperature of the first drying chamber is controlled at 160±5℃, and the outlet temperature of the second drying chamber is controlled at 280±5℃. After drying, it enters the heat exchange cyclone separator and the bag-type dust collector, and the anhydrous magnesium sulfate product is obtained from the conveying screw machine.

[0004] However, the dried anhydrous magnesium sulfate is in the form of powder particles, which is not easy to discharge and is easily left in the device. Moreover, the existing anhydrous magnesium sulfate fluidization drying device requires a large amount of energy, and the energy utilization rate is low, resulting in resource waste. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides an anhydrous magnesium sulfate fluidization drying device that not only can collect and reuse water vapor and hot air, but also can preheat the raw materials, improve the energy utilization rate, and accelerate the discharge of anhydrous magnesium sulfate, avoiding product waste.

[0006] The utility model discloses a kind of anhydrous magnesium sulfate fluidization drying device, including heating mechanism;Still including conveying mechanism, collection mechanism, air extraction mechanism, exhaust mechanism and preheating mechanism, conveying mechanism is installed on heating mechanism and drives anhydrous magnesium sulfate to be sent upwards, collection mechanism is installed on heating mechanism and is collected to the anhydrous magnesium sulfate after drying, air extraction mechanism is installed on collection mechanism and accelerates anhydrous magnesium sulfate to enter into collection mechanism, exhaust mechanism is installed on air extraction mechanism and promptly extracts water vapor, preheating mechanism is installed on air extraction mechanism and preheats raw material;Staff sends raw material to heating mechanism, raw material is heated by heating mechanism, while conveying mechanism drives raw material to be sent upwards, anhydrous magnesium sulfate after drying is sent to collection mechanism, air extraction mechanism extracts air acceleration anhydrous magnesium sulfate powder to enter into collection mechanism, avoid powder to remain in heating mechanism, while promptly extract water vapor generated by drying by exhaust mechanism, extracted water vapor and hot air extracted by air extraction mechanism are sent to preheating mechanism and preheat raw material.

[0007] Preferably, the heating mechanism includes a support, a feed pipe, a feeding hopper and a heating cylinder, the bottom end of the support is connected with the ground, the bottom end of the feed pipe is connected with the top end of the support, the bottom end of the feeding hopper is connected with the top end of the feed pipe, and the heating cylinder is installed on the support, and the inside of the heating cylinder is provided with a cavity and communicates with the inside of the feed pipe.

[0008] Preferably, the conveying mechanism includes a motor, a double-output shaft speed reducer, a first transmission shaft and a spiral blade, the motor is installed on the heating cylinder, the double-output shaft speed reducer is installed on the heating cylinder, the first transmission shaft is rotatably installed in the cavity of the heating cylinder and is in transmission connection with the double-output shaft speed reducer, and the spiral blade is installed on the first transmission shaft.

[0009] Preferably, the collection mechanism includes a discharge pipe, a collection box, a check valve, a drawer, a first filter screen and a handle, the top end of the discharge pipe communicates with the inside of the bottom end of the heating cylinder, the top end of the collection box communicates with the inside of the bottom end of the discharge pipe, the check valve is installed on the discharge pipe, the drawer is slidably installed in the collection box, the first filter screen is installed on the drawer, and the handle is installed on the drawer.

[0010] Preferably, the air extraction mechanism comprises a second transmission shaft, an air pump, a first air extraction pipe and a second filter screen, the second transmission shaft is installed on the double-output shaft speed reducer, the air pump is installed on the heating cylinder and is in transmission connection with the second transmission shaft, the first air extraction pipe is installed on the air pump, and the second filter screen is installed on the collecting box and is in communication with the inside of the collecting box; the double-output shaft speed reducer drives the second transmission shaft to rotate, the second transmission shaft drives the air pump to extract air, the air pump extracts the air in the collecting box through the first air extraction pipe, the first filter screen and the second filter screen are arranged to avoid the anhydrous magnesium sulfate from entering the first air extraction pipe, and the air in the collecting box is extracted to make the collecting box in a negative pressure state, so that the sewage in the heating cylinder is accelerated to enter the drawer.

[0011] Preferably, the steam extraction mechanism comprises a filter and a second air extraction pipe, the filter is installed on the heating cylinder and is in communication with the inside of the cavity of the heating cylinder, and the second air extraction pipe is installed on the filter and is in communication with the inside of the first air extraction pipe; the air pump extracts the steam generated during drying in the cavity of the heating cylinder through the second air extraction pipe, and the filter is arranged to avoid the anhydrous magnesium sulfate powder from being extracted.

[0012] Preferably, the preheating mechanism comprises a gas conveying pipe, a heat exchange pipe and a drainage pipe, the gas conveying pipe is installed on the air pump, the heat exchange pipe is installed on the feeding pipe and is in communication with the inside of the gas conveying pipe, and the drainage pipe is installed on the heat exchange pipe and is in communication with the inside of the heat exchange pipe; the air pump conveys the extracted hot air and steam to the heat exchange pipe through the gas conveying pipe, so that the heat exchange pipe and the raw materials in the feeding pipe are conveniently subjected to heat exchange, the raw materials are preheated, and the steam is condensed into water after cooling and is discharged through the drainage pipe.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the staff sends the raw materials into the heating mechanism, the heating mechanism heats the raw materials, meanwhile, the conveying mechanism drives the raw materials to be conveyed upwards, the dried anhydrous magnesium sulfate is conveyed into the collecting mechanism, the air extraction mechanism extracts air to accelerate the anhydrous magnesium sulfate powder to enter the collecting mechanism, the powder is prevented from remaining in the heating mechanism, meanwhile, the steam generated during drying is extracted in time through the steam extraction mechanism, the extracted steam and the hot air extracted by the air extraction mechanism are conveyed into the preheating mechanism to preheat the raw materials. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the axonometric structural schematic view of the utility model;

[0015] Figure 2 is the axonometric structural schematic view of the heating mechanism of the utility model;

[0016] Figure 3 is the local enlarged sectional axonometric structural schematic view of the conveying mechanism of the utility model;

[0017] Figure 4 is the local enlarged sectional axonometric structural schematic view of the collecting mechanism of the utility model;

[0018] Figure 5 Figure 1 is a partial enlarged isometric structural schematic view of the collecting mechanism, the air extraction mechanism and the steam exhaust mechanism of the present application;

[0019] Figure 6 Figure 4 is an isometric structural schematic view of the preheating mechanism of the present application.

[0020] Markings in the drawings: 01, heating mechanism; 11, support; 12, feeding pipe; 13, feeding hopper; 14, heating cylinder; 02, conveying mechanism; 21, motor; 22, double-output shaft speed reducer; 23, first transmission shaft; 24, helical blade; 03, collecting mechanism; 31, discharging pipe; 32, collecting box; 33, check valve; 34, drawer; 35, first filter screen; 36, handle; 04, air extraction mechanism; 41, second transmission shaft; 42, air pump; 43, first air extraction pipe; 44, second filter screen; 05, steam exhaust mechanism; 51, filter; 52, second air extraction pipe; 06, preheating mechanism; 61, gas conveying pipe; 62, heat exchange pipe; 63, drain pipe. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0022] Example 1

[0023] The utility model discloses a kind of anhydrous magnesium sulfate fluidization drying apparatus, including heating mechanism 01;Still including conveying mechanism 02, collection mechanism 03, air extraction mechanism 04, exhaust mechanism 05 and preheating mechanism 06, conveying mechanism 02 is installed on heating mechanism 01 and drives anhydrous magnesium sulfate to be sent upwards, collection mechanism 03 is installed on heating mechanism 01 and is collected after anhydrous magnesium sulfate is dried, air extraction mechanism 04 is installed on collection mechanism 03 and accelerates anhydrous magnesium sulfate to enter into collection mechanism 03, exhaust mechanism 05 is installed on air extraction mechanism 04 and water vapor is extracted in time, preheating mechanism 06 is installed on air extraction mechanism 04 and preheats raw material;Heating mechanism 01 includes support 11, feed pipe 12, feeding hopper 13 and heating cylinder 14, the bottom of support 11 is connected with ground, the bottom of feed pipe 12 is connected with the top of support 11, the bottom of feeding hopper 13 is connected with the top of feed pipe 12, heating cylinder 14 is installed on support 11, and the inside of heating cylinder 14 is provided with cavity and is communicated with the inside of feed pipe 12;Conveying mechanism 02 includes motor 21, double-output shaft speed reducer 22, first transmission shaft 23 and helical blade 24, motor 21 is installed on heating cylinder 14, double-output shaft speed reducer 22 is installed on heating cylinder 14, first transmission shaft 23 is rotatably installed in the cavity of heating cylinder 14 and is transmissionally connected with double-output shaft speed reducer 22, and helical blade 24 is installed on first transmission shaft 23;Collection mechanism 03 includes discharge pipe 31, collection box 32, check valve 33, drawer 34, first filter screen 35 and handle 36, the top of discharge pipe 31 is communicated with the bottom inside of heating cylinder 14, the top of collection box 32 is communicated with the bottom inside of discharge pipe 31, check valve 33 is installed on discharge pipe 31, drawer 34 is slidably installed in collection box 32, first filter screen 35 is installed on drawer 34, and handle 36 is installed on drawer 34;Air extraction mechanism 04 includes second transmission shaft 41, air pump 42, first air extraction pipe 43 and second filter screen 44, second transmission shaft 41 is installed on double-output shaft speed reducer 22, air pump 42 is installed on heating cylinder 14 and is transmissionally connected with second transmission shaft 41, first air extraction pipe 43 is installed on air pump 42, and second filter screen 44 is installed on collection box 32 and is communicated with the inside of collection box 32.In its work, first, the staff will raw materials through the hopper 13 into the feed pipe 12, feed pipe 12 with preheating mechanism 06 heat exchange raw materials preheating, and then the raw material into the cavity of the heating cylinder 14 heating drying, start the motor 21, the motor 21 through the double output shaft reducer 22 drive first transmission shaft 23 rotation, the first transmission shaft 23 drive spiral blade 24 rotation, spiral blade 24 drive raw materials in the cavity of the heating cylinder 14 conveying and stirring, accelerate the drying of raw materials at the same time accelerate the discharge of raw materials, after drying in the heating cylinder 14 of anhydrous magnesium sulfate through the discharge pipe 31 into the drawer 34 collection, through the setting of check valve 33 to avoid gas backflow, hot air through the first filter screen 35 is extracted mechanism 04, when the drawer 34 is full of collection after operating the drawer 34 pull handle 36 out of the drawer 34 clean, double output shaft reducer 22 drive second transmission shaft 41 rotation, the second transmission shaft 41 drive air pump 42 air, air pump 42 through the first air pipe 43 will collect the air in the tank 32, through the setting of the first filter screen 35 and second filter screen 44 to avoid anhydrous magnesium sulfate into the first air pipe 43, will collect the air in the tank 32, make the tank 32 in a state of negative pressure, accelerate the heating cylinder 14 in the sewage magnesium sulfate into the drawer 34.

[0024] Example 2

[0025] As Figures 1 to 6As shown, the anhydrous magnesium sulfate fluidization drying device of the utility model, on the basis of embodiment 1;The exhaust mechanism 05 includes filter 51 and second air suction pipe 52, filter 51 is installed on heating cylinder 14 and with the cavity inside communication of heating cylinder 14, second air suction pipe 52 is installed on filter 51 and with first air suction pipe 43 inside communication;Preheating mechanism 06 includes gas pipe 61, heat exchange pipe 62 and drain pipe 63, gas pipe 61 is installed on gas pump 42, heat exchange pipe 62 is installed on feed pipe 12 and with gas pipe 61 inside communication, drain pipe 63 is installed on heat exchange pipe 62 and with heat exchange pipe 62 inside communication;When it works, first, the staff adds raw materials through feeding hopper 13 into feed pipe 12, feed pipe 12 and preheating mechanism 06 heat exchange and preheat raw materials, then raw materials enter the cavity of heating cylinder 14 and heat drying, start motor 21, motor 21 rotates first transmission shaft 23 through double-output shaft speed reducer 22, first transmission shaft 23 rotates helical blade 24, helical blade 24 conveys and stirs raw materials in the cavity of heating cylinder 14, accelerates raw materials drying and accelerates raw materials discharge, after drying, the anhydrous magnesium sulfate in heating cylinder 14 is collected into drawer 34 through discharge pipe 31, avoids gas backflow through the setting check valve 33, hot air is extracted by air suction mechanism 04 through first filter screen 35, when drawer 34 is full, the drawer 34 is extracted and cleaned by operating handle 36, double-output shaft speed reducer 22 rotates second transmission shaft 41, second transmission shaft 41 drives gas pump 42 to suck air, gas pump 42 extracts air in collection box 32 through first air suction pipe 43, avoids the anhydrous magnesium sulfate into first air suction pipe 43 through the setting first filter screen 35 and second filter screen 44, extracts air in collection box 32 to make collection box 32 be in negative pressure state, accelerates the sewage magnesium sulfate in heating cylinder 14 into drawer 34, and gas pump 42 extracts water vapor generated in the cavity of heating cylinder 14 through second air suction pipe 52, avoids anhydrous magnesium sulfate powder from being discharged through the setting filter 51, gas pump 42 transports the extracted hot air and water vapor to heat exchange pipe 62 through gas pipe 61, which facilitates heat exchange between heat exchange pipe 62 and raw materials in feed pipe 12, preheats raw materials, and water vapor is condensed into water and discharged through drain pipe 63 after cooling.

[0026] The motor 21, the double-output shaft speed reducer 22 and the gas pump 42 of the utility model are purchased on the market, and the technical personnel in the industry only need to install and operate according to the attached instruction manual, without the creative labor of the technical personnel in the field.

[0027] The above only is the preferred implementation manner of the utility model, and it should be pointed out that, for ordinary technical personnel in the technical field, on the premise of not departing from the technical principles of the utility model, a plurality of improvements and modifications can be made, and the improvements and modifications should be regarded as the protection range of the utility model.

Claims

1. A fluidized drying device for anhydrous magnesium sulfate, comprising a heating mechanism (01); characterized in that, The device further comprises a conveying mechanism (02), a collecting mechanism (03), an air extraction mechanism (04), a steam exhaust mechanism (05) and a preheating mechanism (06), the conveying mechanism (02) is installed on the heating mechanism (01) and drives the anhydrous magnesium sulfate to be conveyed upwards, the collecting mechanism (03) is installed on the heating mechanism (01) and collects the dried anhydrous magnesium sulfate, the air extraction mechanism (04) is installed on the collecting mechanism (03) and accelerates the anhydrous magnesium sulfate to enter the collecting mechanism (03), the steam exhaust mechanism (05) is installed on the air extraction mechanism (04) and exhausts the water vapor in time, and the preheating mechanism (06) is installed on the air extraction mechanism (04) and preheats the raw material.

2. An anhydrous magnesium sulphate fluidisation drying apparatus as claimed in claim 1 wherein, The heating mechanism (01) comprises a support (11), a feeding pipe (12), a feeding hopper (13) and a heating cylinder (14), the bottom end of the support (11) is connected with the ground, the bottom end of the feeding pipe (12) is connected with the top end of the support (11), the bottom end of the feeding hopper (13) is connected with the top end of the feeding pipe (12), and the heating cylinder (14) is installed on the support (11) and is internally provided with a cavity and is in communication with the inside of the feeding pipe (12).

3. An anhydrous magnesium sulphate fluidisation drying apparatus as claimed in claim 2 wherein, The conveying mechanism (02) comprises a motor (21), a double-output shaft speed reducer (22), a first transmission shaft (23) and a spiral blade (24), the motor (21) is installed on the heating cylinder (14), the double-output shaft speed reducer (22) is installed on the heating cylinder (14), the first transmission shaft (23) is rotatably installed in the cavity of the heating cylinder (14) and is in transmission connection with the double-output shaft speed reducer (22), and the spiral blade (24) is installed on the first transmission shaft (23).

4. An anhydrous magnesium sulphate fluidisation drying apparatus as claimed in claim 2 wherein, The collecting mechanism (03) comprises a discharging pipe (31), a collecting box (32), a check valve (33), a drawer (34), a first filter screen (35) and a handle (36), the top end of the discharging pipe (31) is in communication with the bottom end inside of the heating cylinder (14), the top end of the collecting box (32) is in communication with the bottom end inside of the discharging pipe (31), the check valve (33) is installed on the discharging pipe (31), the drawer (34) is slidably installed in the collecting box (32), the first filter screen (35) is installed on the drawer (34), and the handle (36) is installed on the drawer (34).

5. An anhydrous magnesium sulphate fluidisation drying apparatus as claimed in claim 4 wherein, The air extraction mechanism (04) comprises a second transmission shaft (41), an air pump (42), a first air extraction pipe (43) and a second filter screen (44), the second transmission shaft (41) is installed on the double-output shaft speed reducer (22), the air pump (42) is installed on the heating cylinder (14) and is in transmission connection with the second transmission shaft (41), the first air extraction pipe (43) is installed on the air pump (42), and the second filter screen (44) is installed on the collecting box (32) and is in communication with the inside of the collecting box (32).

6. An anhydrous magnesium sulphate fluidisation drying apparatus as claimed in claim 5 wherein, The steam exhaust mechanism (05) comprises a filter (51) and a second air extraction pipe (52), the filter (51) is installed on the heating cylinder (14) and is in communication with the inside of the cavity of the heating cylinder (14), and the second air extraction pipe (52) is installed on the filter (51) and is in communication with the inside of the first air extraction pipe (43).

7. An anhydrous magnesium sulphate fluidisation drying apparatus as claimed in claim 5 wherein, The preheating mechanism (06) comprises a gas conveying pipe (61), a heat exchanging pipe (62) and a drainage pipe (63), the gas conveying pipe (61) is installed on the gas pump (42), the heat exchanging pipe (62) is installed on the feeding pipe (12) and communicates with the inside of the gas conveying pipe (61), and the drainage pipe (63) is installed on the heat exchanging pipe (62) and communicates with the inside of the heat exchanging pipe (62).

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