Drying device for sodium dihydrogen phosphate production and using method thereof

Abstract

The invention provides a drying device for sodium dihydrogen phosphate production and a using method thereof.The drying device comprises a rack, a drying box is arranged on the rack, a flow guide plate is arranged in the drying box and extends in the direction of a material inlet towards the direction of a material outlet, and a flexible material blocking belt is arranged in the portion, located on the outer side of the flow guide plate, of the drying box; a flexible material blocking belt is arranged in the drying box, a filtering baffle is arranged below the flexible material blocking belt, the filtering baffle pulls the two sides of the flexible material blocking belt to be attached to the inner side wall of the drying box all the time, and the bottom of the filtering baffle is arranged on the inner side wall of the bottom of the drying box in a sliding mode. In addition, efficient filtering of the dried materials can be achieved through cooperation of a flexible material blocking belt and a filtering baffle, filtering and scattering of the to-be-dried materials in the drying box are achieved, the drying and flow dividing efficiency of the materials is greatly improved, and operation is more convenient and efficient.

Description

Technical Field

[0001] The invention relates to the technical field of drying equipment, and in particular to a drying device for producing sodium dihydrogen phosphate and a use method thereof. Background Art

[0002] Disodium hydrogen phosphate, also known as sodium monohydrogen phosphate, is one of the sodium hydrochloride salts generated by phosphoric acid. It is a white powder that is easily deliquescent and soluble in water. Its aqueous solution is weakly alkaline. Disodium hydrogen phosphate can be used to make citric acid, water softener, fabric weighting agent and fire retardant, and is also used in glaze, welding flux, medicine, pigment, food industry and to prepare other phosphates for use as industrial water treatment agent, printing and dyeing detergent, quality improver, neutralizer, antibiotic culture agent and biochemical treatment agent food quality improver.

[0003] In the process of producing and processing disodium hydrogen phosphate, a drying device is usually needed to dry the disodium hydrogen phosphate raw material to improve the quality of disodium hydrogen phosphate production. For example, a finished product drying device for calcium hydrogen phosphate production proposed in Chinese patent CN 217929447U has the advantages of using a pad, a limit block, a spring and a card plate. The card plate is rotated and pushed upward to squeeze the spring so that the pad plate moves upward. When the card plate is higher than the limit block, it is rotated counterclockwise so that the card plate is inserted into the limit block, thereby achieving the advantages of convenient installation of infrared lamps and reducing the workload of staff.

[0004] In the process of drying materials, traditional drying boxes lack blocking and separation operations for the dried materials. They only rely on the traditional method of extending the circulation path to dry the materials, resulting in poor drying effect and low drying efficiency. Summary of the invention

[0005] In view of this, the present invention provides a drying device for producing sodium dihydrogen phosphate and a method for using the same. The present invention can realize the diversion operation of the material to be dried by a guide plate arranged inside the drying box, and can realize efficient filtration of the dried material by a flexible material blocking belt in cooperation with a filter baffle, thereby solving the problem that the traditional drying box lacks the blocking and separation operation of the dried material during the material drying process, and only relies on the traditional method of extending the flow path to dry the material, resulting in poor drying effect and low drying efficiency.

[0006] In order to solve the above technical problems, the present invention provides a drying device for producing sodium dihydrogen phosphate and a method for using the drying device, comprising a frame, a drying box is arranged on the frame, a guide plate is arranged inside the drying box, the guide plate is extended along the direction of the material inlet and the direction of the material outlet, a flexible material blocking belt is arranged inside the drying box outside the guide plate, a filtering baffle is arranged below the flexible material blocking belt, the two sides of the filtering baffle pulling the flexible material blocking belt are always in contact with the inner side wall of the drying box, and the bottom of the filtering baffle is slidably arranged on the bottom inner side wall of the drying box. The present invention can realize the diversion operation of the material to be dried by the guide plate arranged inside the drying box, and can realize the efficient filtering of the dried material by the flexible material blocking belt and the filtering baffle, and realize the filtering and dispersing operation of the material to be dried for the material in the drying box, so as to solve the problem that the traditional drying box lacks the blocking and separation operation of the dried material in the process of drying the material, and only relies on the traditional way of extending the flow path to dry the material, resulting in poor drying effect and low drying efficiency, greatly improves the drying and diversion efficiency of the material, and is more convenient and efficient to operate.

[0007] The drying box is a box-type structure. A feed hopper connected to the discharge port of the conveyor is arranged on the outer wall on the upper side of the drying box. The feed end of the guide plate is connected to the discharge end of the feed hopper. The guide plate is a spiral structure and is spirally extended along the feeding direction of the material and arranged inside the feed box.

[0008] A discharge port is arranged at the upper part of the other side of the drying box, and a suction machine is arranged between the discharge port and the silo, and the suction machine is an impeller type suction fan.

[0009] The feeding port and the discharging port of the suction machine are connected through a collecting hopper, and the discharging port of the suction machine is connected with the feeding port of the silo.

[0010] A plurality of moisture drain ports are arranged on the top of the drying box.

[0011] A hot air inlet box connected to the heater is arranged at the lower part of one side of the drying box, and an outlet of the hot air inlet box is connected to the lower part of the drying box.

[0012] A shunt pipe is arranged at the lower part of the other side of the drying box, a filter plate is arranged at the upper part of the side where the shunt pipe is connected to the drying box, and the other end of the shunt pipe is connected to the side wall of the bottom of the feed hopper.

[0013] A limiting plate is arranged on the upper part of the flexible material blocking belt, and the other end of the limiting plate is arranged inside the drying box and between the collecting hopper and the moisture discharge port.

[0014] An induced draft fan is arranged at the outlet of the heater, and the air outlet of the induced draft fan is connected with the inlet of the hot air box.

[0015] A method for using a drying device for producing sodium dihydrogen hydride comprises the following steps:

[0016] S1, start the heater until the temperature of the heater rises to a suitable drying temperature;

[0017] S2. Start the induced draft fan, which can smoothly absorb the heat generated by the heater into the hot air box, and then enter the drying box through the hot air box, so that the temperature in the drying box is raised to a suitable temperature and a certain vortex is formed;

[0018] S3, start the conveyor to introduce the material to be dried. The conveyor can introduce the material to be dried into the drying box through the feed port, and smoothly guide it into the drying box through the guide plate;

[0019] S4. Start the suction machine, which can smoothly suck out the dried materials.

[0020] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0021] 1. The present invention can realize the diversion operation of the material to be dried by the guide plate arranged inside the drying box, and can realize the efficient filtration of the dried material by the flexible material blocking belt and the filter baffle, as well as the filtering and breaking up of the material to be dried in the drying box, which solves the problem that the traditional drying box lacks the blocking and separation operation of the dried material during the material drying process, and only relies on the traditional way of extending the flow path to dry the material, resulting in poor drying effect and low drying efficiency, greatly improves the drying and diversion efficiency of the material, and makes the operation more convenient and efficient.

[0022] 2. The present invention can realize automatic transportation and feeding of materials through a conveyor, and can realize guiding operations of materials through a guide plate, and can realize guiding operations of materials through a spirally arranged guide plate, thereby greatly increasing its movement path, thereby improving its drying effect and drying efficiency.

[0023] 3. The present invention can realize the guiding and discharging operation of the dried material through the suction effect of the impeller-type suction fan in cooperation with the rotating impeller, and can also smoothly discharge the dried material while discharging excess heat.

[0024] 4. The present invention can support the flexible material-blocking belt through the limit plate, and realize the material-moving operation under the impact when the material enters, the blowing action of the hot air during the drying operation, and the flexible deformation of the flexible material-blocking belt itself. At the same time, the filtering and blocking operation of the material is realized through the filtering baffle at the bottom of the air, and the operation is more convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a drying device for producing sodium dihydrogen phosphate according to the present invention;

[0026] Figure 2 This is a schematic structural diagram of a drying device for producing sodium dihydrogen phosphate without a front baffle shell of the present invention;

[0027] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 It is a structural schematic diagram of the drying device for sodium dihydrogen phosphate production of the present invention from another perspective without the front baffle;

[0029] Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle.

[0030] Explanation of the reference numerals: 100, frame; 200, drying box; 201, discharge port; 202, dehumidification port; 203, diverter pipe; 300, guide plate; 400, flexible material blocking belt; 500, filter baffle; 600, feed hopper; 700, suction machine; 800, collection hopper; 900, hot air inlet box; 110, filter disc; 210, limit plate; 310, induced draft fan. DETAILED DESCRIPTION

[0031] To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the following will be combined with the appended drawings of the embodiments of the present invention. Figure 1-5 , the technical scheme of the embodiment of the present invention is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present invention, not all of the embodiments. Based on the described embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0032] like Figure 1-5As shown: the present embodiment provides a drying device for the production of sodium dihydrogen phosphate and a method for using the same, including a frame 100, a drying box 200 is arranged on the frame 100, a guide plate 300 is arranged inside the drying box 200, the guide plate 300 is made of nylon material with a certain toughness, the purpose of which is to be able to vibrate and discharge the material on its upper part under the action of the blowing vortex of the hot air in the drying box 200, play a certain effect of a vibrating screen, and greatly improve the drying efficiency of the material, the guide plate 300 is extended along the direction of the material inlet and the direction of the material outlet, and a flexible material blocking belt 400 is arranged inside the drying box 200 outside the guide plate 300, and a filtering baffle 500 is arranged under the flexible material blocking belt 400, and a plurality of filtering holes are opened on the filtering baffle 500, and the dried materials smaller than the diameter of the filtering holes can be collected through the filtering holes on the filtering baffle 500, and the operation is more convenient, and the filtering baffle 500 pulls the two sides of the flexible material blocking belt 400 to keep The bottom of the filter baffle 500 is fitted with the inner wall of the drying box 200 and is slidably arranged on the inner wall of the bottom of the drying box 200. This can prevent the material from being discharged and collected before it is completely dried due to the existence of a gap during the swinging of the flexible material blocking belt 400 with the filter baffle 500, thereby affecting the overall drying efficiency and drying quality of the material. The present invention can realize the diversion operation of the material to be dried by the guide plate 300 arranged inside the drying box 200, and can realize efficient filtering of the dried material by the flexible material blocking belt 400 and the filter baffle 500, as well as the filtering and dispersing operation of the material to be dried in the drying box 200, thereby solving the problem that the traditional drying box 200 lacks the blocking and separation operation of the dried material during the material drying process, and only relies on the traditional method of extending the circulation path to dry the material, resulting in poor drying effect and low drying efficiency, thereby greatly improving the drying and diversion efficiency of the material, and making the operation more convenient and efficient.

[0033] According to one embodiment of the present invention, Figure 1-4 As shown, the drying box 200 is a box-type structure, and a feed hopper 600 connected to the discharge port 201 of the feeder is arranged on the outer wall of the upper side of the drying box 200, and the feed end of the guide plate 300 is connected to the discharge end of the feed hopper 600. The guide plate 300 is a spiral structure and is spirally extended along the feeding direction of the material inside the feed box. The present invention can realize automatic transportation and feeding operations of materials through the conveyor, and can realize guiding operations of materials through the guide plate. The guiding operation of materials is realized by the spirally arranged guide plate 300, which greatly increases its movement path, thereby improving its drying effect and drying efficiency.

[0034] According to another embodiment of the present invention, Figure 1 and Figure 2As shown, a discharge port 201 is provided at the upper part of the other side of the drying box 200, and the height of the discharge port 201 is higher than the height of the feeding end of the feed hopper 600. The purpose of this is to facilitate the vortex effect after the hot air in the drying box 200 generates to repeatedly and efficiently dry the material inside. After completion, the suction machine 700 can suck out and collect the dried material that meets the drying requirements. The reason is that when the material is dried to reduce the moisture inside it, the mass of the material will be reduced accordingly. In addition, the agglomerated powdered material will re-form into powder due to the evaporation of moisture. After being efficiently dried, it will be sucked out and collected by the suction machine 700, which makes the operation more convenient and efficient. A suction machine 700 is provided between the discharge port 201 and the silo. The suction machine 700 is an impeller suction fan. The suction effect of the impeller suction fan cooperates with the rotating impeller to guide and discharge the dried material. While discharging excess heat, the dried material can also be smoothly discharged.

[0035] According to another embodiment of the present invention, Figure 1 and Figure 2 As shown, the feed port and the discharge port 201 of the suction machine 700 are connected via the collecting hopper 800, and the discharge port 201 of the suction machine 700 is connected to the feed port of the silo. The present invention can realize the smooth suction of materials into the silo for collection through the suction machine 700, and the operation is more convenient.

[0036] According to another embodiment of the present invention, Figure 1 and Figure 4 As shown, a plurality of moisture removal ports 202 are provided on the top of the drying box 200. The present invention can realize efficient discharge of moisture generated during the drying process through the moisture removal ports 202, thereby greatly improving the drying effect and drying efficiency of the material.

[0037] According to another embodiment of the present invention, Figure 1 and Figure 3 As shown, a hot air inlet box 900 connected to a heater is provided at the lower portion of one side of the drying box 200, and an outlet of the hot air inlet box 900 is connected to the lower portion of the drying box 200. The present invention can generate heat required for drying through the action of the heater, and can guide the heat through the hot air inlet box 900, so that the heat can smoothly enter the drying box 200 and efficiently dry the materials therein.

[0038] According to another embodiment of the present invention, Figure 2 and Figure 5As shown, a shunt pipe 203 is provided at the lower part of the other side of the drying box 200, and a filter plate 110 is provided at the upper part of the side where the shunt pipe 203 is connected to the drying box 200, and the other end of the shunt pipe 203 is connected to the side wall of the bottom of the feed hopper 600, so that excess heat can be conducted to the feed hopper 600 for pre-drying the material to be dried, which greatly improves the subsequent drying effect and drying efficiency. The present invention can block the material in the drying box 200 through the filter plate 110, and can pour out excess heat, thereby avoiding the problem of safety hazards caused by excessive temperature in the drying box 200.

[0039] A limiting plate 210 is provided on the upper part of the flexible material blocking belt 400, and the other end of the limiting plate 210 is arranged inside the drying box 200 and between the collecting hopper 800 and the dehumidification port 202. The present invention can support the flexible material blocking belt 400 through the limiting plate 210, and realize the material moving operation under the impact when the material enters, the blowing action of the hot air during the drying operation, and the flexible deformation of the flexible material blocking belt 400 itself. At the same time, the filtering and blocking operation of the material is realized through the filtering baffle 500 at the lower part of the air, and the operation is more convenient and efficient.

[0040] An induced draft fan 310 is provided at the outlet of the heater, and the air outlet of the induced draft fan 310 is connected to the inlet of the hot air inlet box 900. The present invention can realize the smooth guidance of the heat generated by the heater to the hot air inlet box 900 through the action of the induced draft fan 310, and then smoothly enter the drying box 200 through the guiding action of the hot air inlet box 900, so that the operation is more convenient.

[0041] The method of using the present invention:

[0042] First of all, it should be clear that the drying device involved in the present invention is mainly used for efficient drying of various granular materials or powdered agglomerated materials. The present invention takes the drying of sodium dihydrogen phosphate granular or agglomerated powdered materials as an example to elaborate on its use method in detail. When the material needs to be dried, follow the following steps: S1, start the heater until the temperature of the heater is raised to a suitable drying temperature. For example, the drying temperature of sodium dihydrogen phosphate is usually around 150 degrees Celsius. The temperature of the heater can be controlled to increase it to between 160 and 180 degrees Celsius. Since there will be a certain loss of heat during the transfer process, it is necessary to control the temperature to be higher than the drying temperature;

[0043] S2, start the induced draft fan 310, the induced draft fan 310 can smoothly absorb the heat generated by the heater into the hot air box 900, and then enter the drying box 200 through the action of the hot air box 900, so that the temperature in the drying box 200 is increased to a suitable temperature, and a certain eddy current is formed. At this time, the dried material will roll in the drying box 200 under the action of the eddy current, thereby being dried efficiently;

[0044] S3, start the conveyor to introduce the material to be dried. The conveyor can introduce the material to be dried into the drying box 200 through the feed port, and smoothly guide it into the drying box 200 through the guide plate 300. In this process, the excess heat in the drying box 200 will enter the feed hopper 600 through the shunt pipe 203, and perform preliminary residual heat operation on the material entering, further improving the drying efficiency in the drying box 200, and making the operation more convenient and efficient;

[0045] S4. Start the suction machine 700. The suction machine 700 can smoothly suck out the dried materials. The suction machine 700 can also take out some excess heat in the drying box 200, thereby avoiding the problem of greater safety hazards caused by excessive temperature increase in the drying box 200, and the operation is more convenient.

[0046] The present invention can realize the flow guiding operation of the material to be dried by the guide plate 300 arranged inside the drying box 200, and can realize the efficient filtration of the dried material by the flexible material blocking belt 400 and the filter baffle 500, thereby solving the problem that the traditional drying box 200 lacks the blocking and separation operation of the dried material during the material drying process, and only relies on the traditional method of extending the flow path to dry the material, resulting in poor drying effect and low drying efficiency.

[0047] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A drying device for producing sodium dihydrogen phosphate, comprising a frame (100), characterized in that: A drying box (200) is arranged on the frame (100), a guide plate (300) is arranged inside the drying box (200), the guide plate (300) is extended along the direction of the material inlet and the direction of the material outlet, a flexible material blocking belt (400) is arranged inside the drying box (200) outside the guide plate (300), a filter baffle (500) is arranged below the flexible material blocking belt (400), the filter baffle (500) pulls the two sides of the flexible material blocking belt (400) to always fit with the inner side wall of the drying box (200), and the bottom of the filter baffle (500) is slidably arranged on the bottom inner side wall of the drying box (200).

2. The drying device for producing sodium dihydrogen phosphate as claimed in claim 1, characterized in that: The drying box (200) is a box-type structure. A feed hopper (600) connected to a discharge port (201) of a feeder is arranged on an outer side wall of an upper side of the drying box (200). The feed end of the guide plate (300) is connected to the discharge end of the feed hopper (600). The guide plate (300) is a spiral structure and is arranged inside the feed box in a spiral extension along the feeding direction of the material.

3. The drying device for producing sodium dihydrogen phosphate as claimed in claim 2, characterized in that: A discharge port (201) is provided at the upper portion of the other side of the drying box (200), and a suction machine (700) is provided between the discharge port (201) and the silo.

4. The drying device for producing sodium dihydrogen phosphate as claimed in claim 3, characterized in that: The feed port and the discharge port (201) of the suction machine (700) are connected via a collecting hopper (800), and the discharge port (201) of the suction machine (700) is connected to the feed port of the silo.

5. The drying device for producing sodium dihydrogen phosphate as claimed in claim 4, characterized in that: The top of the drying box (200) is provided with a plurality of moisture discharge ports (202).

6. The drying device for producing sodium dihydrogen phosphate as claimed in claim 5, characterized in that: A hot air inlet box (900) connected to the heater is provided at the lower portion of one side of the drying box (200), and an outlet of the hot air inlet box (900) is connected to the lower portion of the drying box (200).

7. The drying device for producing sodium dihydrogen phosphate as claimed in claim 6, characterized in that: A shunt pipe (203) is provided at the lower part of the other side of the drying box (200), a filter plate (110) is provided at the upper part of the side of the shunt pipe (203) that is connected to the drying box (200), and the other end of the shunt pipe (203) is connected to the side wall of the bottom of the feed hopper (600).

8. The drying device for producing sodium dihydrogen phosphate as claimed in claim 7, characterized in that: A limiting plate (210) is arranged on the upper part of the flexible material blocking belt (400), and the other end of the limiting plate (210) is arranged inside the drying box (200) and between the collecting hopper (800) and the moisture discharge port (202).

9. The drying device for producing sodium dihydrogen phosphate as claimed in claim 8, characterized in that: An induced draft fan (310) is provided at the outlet of the heater, and the air outlet of the induced draft fan (310) is connected to the inlet of the hot air box (900).

10. A method for using a drying device for sodium dihydrogen production, characterized in that: The steps include: S1, start the heater; S2, starting the induced draft fan (310); S3, start the conveyor to import the materials to be dried; S4, start the suction machine (700).

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