Drying device for disodium hydrogen phosphate production

Abstract

The utility model relates to a drying device for disodium hydrogen phosphate production. The drying device comprises a barrel body (21) and a spiral blade (22), an upper vibration hopper (25) and a lower vibration hopper (26); to-be-dried disodium hydrogen phosphate is conveyed into the upper vibration hopper (25) through the feeding pipe (13), under the action of the upper vibration hopper (25) and the lower vibration hopper (26), the disodium hydrogen phosphate is fully turned over and conveyed in a flowing mode along the upper vibration hopper (25) and the lower vibration hopper (26), so that the disodium hydrogen phosphate is fully in contact with hot air to be fully dried, and the drying efficiency is improved. Disodium hydrogen phosphate fed by the lower vibrating hopper (26) and the lower feeding hopper (24) is lifted upwards through the spiral blade (22), and is fed to the upper vibrating hopper (25) through the upper discharging hopper (23), so that repeated circulating drying is realized, and the drying effect and the drying efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of disodium hydrogen phosphate production, in particular to a drying device for disodium hydrogen phosphate production. Background Art

[0002] Disodium hydrogen phosphate, with the chemical formula Na2HPO4, is one of the sodium hydrochloride salts generated by phosphoric acid. It is a white granular or powdery solid, easily deliquescent and easily weathered in the air. Disodium hydrogen phosphate is widely used in many fields. In the industrial field, it is used as a water softener, fabric weighting agent, fire retardant, as well as glaze, welding agent, industrial water treatment agent, printing and dyeing detergent, etc.; in the medical field, it is used as an antibiotic culture agent, biochemical treatment agent, etc.; in the food industry, it is used as a food quality improver; it is also used for pigments and the preparation of other phosphates. In the production and processing of disodium hydrogen phosphate, a drying device is usually required to dry the disodium hydrogen phosphate raw material to improve the quality of disodium hydrogen phosphate production.

[0003] The Chinese utility model patent with the authorization announcement number CN220852926U discloses a drying device for disodium hydrogen phosphate production, which first crushes the disodium hydrogen phosphate with a blade, then introduces hot air into the drying box, and turns and stirs the disodium hydrogen phosphate with a screw rod and a propeller to improve the drying speed and effect. However, in the above scheme, during the drying process, the disodium hydrogen phosphate is easily accumulated on one side of the drying box and cannot be fully turned over, resulting in insufficient contact between the disodium hydrogen phosphate and the hot air, and poor drying effect. Utility Model Content

[0004] The technical problem to be solved by the utility model is that in the drying process of the existing drying device for disodium hydrogen phosphate production, the disodium hydrogen phosphate is easily accumulated on one side of the drying box and cannot be fully turned over, resulting in insufficient contact between the disodium hydrogen phosphate and the hot air and poor drying effect.

[0005] In order to solve the above problems, the utility model provides a drying device for the production of disodium hydrogen phosphate, wherein an air inlet pipe and an air outlet pipe are respectively arranged on both sides of a drying box, a feed pipe is arranged on the top of the drying box, a discharge pipe is arranged on the bottom, a cylinder corresponding to the discharge pipe is arranged in the drying box, a spiral blade is arranged in the cylinder, and an upper discharge hopper and a lower input hopper connected to the interior of the cylinder are arranged on one side of the cylinder; an upper vibrating hopper and a lower vibrating hopper are arranged in the drying box, the upper end of the upper vibrating hopper is movably connected to the upper discharge hopper, the lower end of the upper vibrating hopper is arranged above the lower vibrating hopper, and the lower end of the lower vibrating hopper is movably connected to the lower input hopper.

[0006] The drying device for disodium hydrogen phosphate production provided by the utility model also has the following technical features:

[0007] The upper vibrating bucket is inclined from top to bottom and from close to the cylinder to away from the cylinder, and the lower vibrating bucket is inclined from top to bottom and from away to close to the cylinder.

[0008] One side of the cylinder body is provided with an upper discharge port connected to the upper discharge hopper and a lower feed port connected to the lower feed hopper. The upper discharge hopper, the upper discharge port and the upper vibrating hopper have the same inclination direction, and the lower feed hopper and the lower feed port have the same inclination direction.

[0009] A first motor is provided on the drying oven. The output shaft of the first motor extends into the drying oven and is eccentrically provided with a cylinder body. The outer surface of the cylinder body contacts the lower side of the upper vibrating hopper or the lower vibrating hopper. The upper end of the upper vibrating hopper is rotatably connected to the upper discharge hopper. The lower feed hopper, the lower feed port and the lower vibrating hopper have the same inclination direction.

[0010] A support plate is provided in the drying oven. Springs are provided on the support plate, and the upper ends of the springs are connected to the lower side of the upper vibrating hopper or the lower vibrating hopper.

[0011] The width of the upper vibrating hopper is smaller than that of the lower vibrating hopper, and the length of the upper vibrating hopper is smaller than that of the lower vibrating hopper.

[0012] A second motor is provided on the drying oven. The output shaft of the second motor extends into the drying oven and is connected to a spiral blade.

[0013] A temperature acquisition module is provided in the drying oven.

[0014] The utility model has the following beneficial effects: The disodium hydrogen phosphate to be dried is sent into the upper vibrating hopper through the feed pipe. Under the action of the upper vibrating hopper and the lower vibrating hopper, the disodium hydrogen phosphate is fully turned over and is conveyed in a flowing manner along the upper vibrating hopper and the lower vibrating hopper, so that the disodium hydrogen phosphate is fully dried by fully contacting with the hot air. The disodium hydrogen phosphate sent into from the lower vibrating hopper and the lower feed port is lifted upward by the spiral blade and is sent from the upper discharge hopper to the upper vibrating hopper, realizing multiple cycle drying, and improving the drying effect and drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a partial cross-sectional view of the utility model;

[0016] Figure 2 is Figure 1 an axonometric view of the internal structure of

[0017] Figure 3 a schematic connection structure diagram of the mounting ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The utility model will be described in detail below with reference to the drawings and in combination with embodiments. It should be noted that, without conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.

[0019] Such as Figures 1 to 3As shown, the utility model of the drying device for producing disodium hydrogen phosphate has an air inlet pipe 11 and an air outlet pipe 12 on both sides of a drying box 10, a feed pipe 13 on the top of the drying box 10, and a discharge pipe 14 on the bottom. A cylinder 21 corresponding to the discharge pipe 14 is provided in the drying box 10, and a spiral blade 22 is provided in the cylinder 21. An upper discharge hopper 23 and a lower feed hopper 24 connected to the interior of the cylinder 21 are provided on one side of the cylinder 21; an upper vibrating hopper 25 and a lower vibrating hopper 26 are provided in the drying box 10, the upper end of the upper vibrating hopper 25 is movably connected to the upper discharge hopper 23, the lower end of the upper vibrating hopper 25 is arranged above the lower vibrating hopper 26, and the lower end of the lower vibrating hopper 26 is movably connected to the lower feed hopper 24.

[0020] The disodium hydrogen phosphate to be dried is sent to the upper vibrating bucket 25 through the feed pipe 13. Under the action of the upper vibrating bucket 25 and the lower vibrating bucket 26, the disodium hydrogen phosphate is fully turned over and transported along the upper vibrating bucket 25 and the lower vibrating bucket 26 in a flowing manner, so that the disodium hydrogen phosphate is fully in contact with the hot air and is fully dried. The disodium hydrogen phosphate sent in from the lower vibrating bucket 26 and the lower feeding hopper 24 is lifted upward by the spiral blade 22 and sent to the upper vibrating bucket 25 through the upper discharging hopper 23, thereby realizing multiple cycles of drying and improving the drying effect and drying efficiency.

[0021] One end of the air inlet pipe 11 is connected to the drying box 10, and the other end is provided with an electric heating plate and a fan. The wind blown by the fan is converted into hot air after passing through the electric heating plate and is passed into the drying box 10 through the air inlet pipe 11. Valves are provided on the air inlet pipe 11 and the air outlet pipe 12.

[0022] The feed pipe 13 is arranged directly above the upper vibrating bucket 25 , so that disodium hydrogen phosphate can fall into the upper vibrating bucket 25 from the feed pipe 13 .

[0023] Preferably, the upper vibration bucket 25 is inclined from top to bottom and from close to far away from the cylinder 21, and the lower vibration bucket 26 is inclined from top to bottom and from far away to close to the cylinder 21, so that the disodium hydrogen phosphate on the upper vibration bucket 25 can fall into the lower vibration bucket 26 to achieve cyclic drying.

[0024] Preferably, an upper discharge port 27 connected to the upper discharge hopper 23 and a lower feed port 28 connected to the lower feed hopper 24 are provided on one side of the cylinder 21; the upper discharge hopper 23, the upper discharge port 27 and the upper vibrating hopper 25 have the same inclination direction; the lower feed hopper 24, the lower feed port 28 and the lower vibrating hopper 26 have the same inclination direction.

[0025] The spiral blades 22 lift the disodium hydrogen phosphate fed from the lower vibrating hopper 26, the lower feeding hopper 24 and the lower feeding port 28 upward, and feed it to the upper vibrating hopper 25 through the upper discharging port 27 and the upper discharging hopper 23, thereby achieving multiple cycles of drying.

[0026] Preferably, the drying box 10 is provided with a first motor 31, the output shaft of the first motor 31 extends into the drying box 10 and is eccentrically provided with a column 32, the outer surface of the column 32 contacts the lower side of the upper vibrating bucket 25 or the lower vibrating bucket 26; the upper end of the upper vibrating bucket 25 is rotatably connected to the upper discharge hopper 23, and the lower end of the lower vibrating bucket 26 is rotatably connected to the lower input hopper 24.

[0027] The output shaft of the first motor 31 drives the column 32 to rotate eccentrically, so that the upper vibrating bucket 25 swings back and forth around its upper end for vibration. Similarly, the lower vibrating bucket 26 swings back and forth around its lower end for vibration, thereby realizing the upper vibrating bucket 25 and the lower vibrating bucket 26 to flip and flow-transport disodium hydrogen phosphate by vibration.

[0028] The first motor 31 is disposed outside the drying box 10 , and an output shaft thereof is rotationally connected to the drying box 10 .

[0029] Preferably, a support plate 33 is provided in the drying box 10, and a spring 34 is provided on the support plate 33, and the upper end of the spring 34 is connected to the lower side of the upper vibrating bucket 25 or the lower vibrating bucket 26, so that the outer surface of the column 32 can always contact the lower side of the upper vibrating bucket 25 or the lower vibrating bucket 26.

[0030] Preferably, the width of the upper vibrating bucket 25 is smaller than the width of the lower vibrating bucket 26, and the length of the upper vibrating bucket 25 is smaller than the length of the lower vibrating bucket 26, so that the disodium hydrogen phosphate in the upper vibrating bucket 25 can fall smoothly into the lower vibrating bucket 26 to avoid spillage and waste.

[0031] Preferably, the drying box 10 is provided with a second motor 15 , and an output shaft of the second motor 15 extends into the drying box 10 and is connected to the spiral blade 22 .

[0032] The output shaft of the second motor 15 is controlled to drive the spiral blade 22 to rotate forward to lift the disodium hydrogen phosphate upward for multiple cycles of drying. When the disodium hydrogen phosphate is fully dried, the output shaft of the second motor 15 is controlled to drive the spiral blade 22 to rotate reversely, and the first motor 31 is controlled to operate at the same time. The disodium hydrogen phosphate in the upper vibrating bucket 25 and the lower vibrating bucket 26 finally falls into the cylinder 21 and is sent into the discharge pipe 14 by the spiral blade 22 for discharge.

[0033] Among them, see Figure 1 , Figure 3 The output shaft of the second motor 15 passes through the barrel 21 and extends into the discharge pipe 14. The output end of the second motor 15 is rotatably disposed in the discharge pipe 14 through a connecting rod 16 and a mounting ring 17 to better support the output shaft of the second motor 15 and the spiral blade 22.

[0034] Among them, see Figure 1, the diameter of the cylinder body 21 is larger than that of the discharge pipe 14. A tapered hole 18 is provided on the drying box 10. The lower end of the cylinder body 21 is arranged on the upper side of the tapered hole 18, and the discharge pipe 14 is arranged on the lower side of the tapered hole 18, so that the disodium hydrogen phosphate in the cylinder body 21 can smoothly fall into the discharge pipe 14 and be discharged.

[0035] Wherein, a cover plate 19 is rotatably arranged at the bottom of the discharge pipe 14. Of course, a valve can also be directly arranged on the discharge pipe 14.

[0036] Preferably, a temperature acquisition module 20 is arranged in the drying box 10.

[0037] Wherein, a temperature display and a control module are also arranged on the drying box 10. The control module can control the start and stop of the first motor 31 and the second motor 15 according to the current temperature in the drying box 10, that is, control the lifting, turning and conveying of the disodium hydrogen phosphate; at the same time, the control module can also control the start and stop and operating power of the electric heating plate and the fan corresponding to the air inlet pipe 11 to control the drying time and drying conditions. The above control principle is the prior art and will not be elaborated here.

[0038] The working principle of the present utility model is as follows:

[0039] The disodium hydrogen phosphate to be dried is sent into the upper vibrating hopper 25 through the feed pipe 13. The first motor 31 and the second motor 15 are started, and hot air is introduced through the air inlet pipe 11. The output shaft of the first motor 31 drives the column body 32 to rotate eccentrically, so that the upper vibrating hopper 25 swings reciprocally around its upper end to vibrate, and the lower vibrating hopper 26 swings reciprocally around its lower end to vibrate, thereby realizing that the upper vibrating hopper 25 and the lower vibrating hopper 26 fully turn over and flow-convey the disodium hydrogen phosphate in a vibrating manner, so that the disodium hydrogen phosphate is fully dried by fully contacting with the hot air; control the output shaft of the second motor 15 to drive the spiral blade 22 to rotate forward, lift the disodium hydrogen phosphate sent from the lower vibrating hopper 26, the lower feeding hopper 24 and the lower feeding port 28 upward, and send it to the upper vibrating hopper 25 through the upper discharge port 27 and the upper discharge hopper 23, thereby realizing multiple-cycle drying and improving the drying effect and drying efficiency;

[0040] The temperature acquisition module 20 monitors the temperature in the drying box 10 in real time, and can control the drying time and drying conditions through the control module; when the disodium hydrogen phosphate is fully dried, control the output shaft of the second motor 15 to drive the spiral blade 22 to rotate reversely, and at the same time control the first motor 31 to operate. The disodium hydrogen phosphate in the upper vibrating hopper 25 and the lower vibrating hopper 26 finally falls into the cylinder body 21 and is sent into the discharge pipe 14 by the reversely rotating spiral blade 22 and discharged.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A drying device for the production of disodium hydrogen phosphate. Air inlet pipes (11) and air outlet pipes (12) are respectively arranged on both sides of a drying box (10). A feed pipe (13) is arranged at the top of the drying box (10), and a discharge pipe (14) is arranged at the bottom. It is characterized in that, Inside the drying oven (10), there is a cylinder body (21) corresponding to the discharge pipe (14). Inside the cylinder body (21), there is a spiral blade (22). On one side of the cylinder body (21), there are an upper discharge hopper (23) and a lower feed hopper (24) that are connected to its interior. Inside the drying oven (10), there are an upper vibrating hopper (25) and a lower vibrating hopper (26). The upper end of the upper vibrating hopper (25) is movably connected to the upper discharge hopper (23). The lower end of the upper vibrating hopper (25) is arranged above the lower vibrating hopper (26). The lower end of the lower vibrating hopper (26) is movably connected to the lower feed hopper (24).

2. The drying device for the production of disodium hydrogen phosphate according to claim 1, characterized in that, The upper vibrating hopper (25) is inclined from top to bottom and from near to far away from the cylinder body (21). The lower vibrating hopper (26) is inclined from top to bottom and from far away to near the cylinder body (21).

3. The drying device for the production of disodium hydrogen phosphate according to claim 2, characterized in that, On one side of the cylinder body (21), there are an upper discharge opening (27) connected to the upper discharge hopper (23) and a lower feed opening (28) connected to the lower feed hopper (24). The upper discharge hopper (23), the upper discharge opening (27) and the upper vibrating hopper (25) have the same inclination direction. The lower feed hopper (24), the lower feed opening (28) and the lower vibrating hopper (26) have the same inclination direction.

4. The drying device for the production of disodium hydrogen phosphate according to claim 1, characterized in that, On the drying oven (10), there is a first motor (31). The output shaft of the first motor (31) extends into the drying oven (10) and is eccentrically provided with a cylinder body (32). The outer surface of the cylinder body (32) contacts the lower side of the upper vibrating hopper (25) or the lower vibrating hopper (26). The upper end of the upper vibrating hopper (25) is rotatably connected to the upper discharge hopper (23). The lower end of the lower vibrating hopper (26) is rotatably connected to the lower feed hopper (24).

5. The drying device for the production of disodium hydrogen phosphate according to claim 4, characterized in that, Inside the drying oven (10), there is a support plate (33). On the support plate (33), there is a spring (34). The upper end of the spring (34) is connected to the lower side of the upper vibrating hopper (25) or the lower vibrating hopper (26).

6. The drying device for the production of disodium hydrogen phosphate according to claim 1, wherein, The width of the upper vibrating hopper (25) is smaller than the width of the lower vibrating hopper (26). The length of the upper vibrating hopper (25) is smaller than the length of the lower vibrating hopper (26).

7. The drying device for the production of disodium hydrogen phosphate according to claim 1, characterized in that, On the drying oven (10), there is a second motor (15). The output shaft of the second motor (15) extends into the drying oven (10) and is connected to the spiral blade (22).

8. The drying device for the production of disodium hydrogen phosphate according to claim 1, characterized in that, Inside the drying oven (10), there is a temperature acquisition module (20).

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