Potassium dihydrogen phosphate sieving device with flash drying function

Abstract

The utility model discloses a screening equipment of potassium dihydrogen phosphate with flash drying function belongs to chemical equipment art field, screening equipment of potassium dihydrogen phosphate with flash drying function, including flash tank, fixedly connected on the flash tank's flash gas interface, liquid outlet and liquid inlet and install on the liquid inlet's pressure reducing valve, the flash gas interface installs dry tank, the output of dry tank is connected with cyclone separator, the cyclone separator below is installed with screening box, the top of screening box is equipped with feed inlet, the feed inlet with cyclone separator's discharge port between conduction connection has bellows hose, the one side of feed inlet is provided with the vibration motor of fixed connection through the base with screening box, it can carry out flash evaporation, drying, separation and screening to saturated potassium dihydrogen phosphate, and effectively improved the production efficiency of high potassium dihydrogen phosphate.

Description

Technical Field

[0001] This utility model relates to the field of chemical equipment technology, and more specifically, to a sieving device for potassium dihydrogen phosphate with flash drying function. Background Technology

[0002] Potassium dihydrogen phosphate is an inorganic salt compound with the chemical formula KH₂PO₄ and a relative molecular weight of 136.09. It appears as colorless tetragonal crystals or white granular powder, with a density of 2.338 g / cm³, a melting point of 252.6℃, and is hygroscopic. It is soluble in water, and its aqueous solution is weakly acidic. It is insoluble in ethanol. Upon melting, it forms a transparent liquid, which solidifies upon cooling into an opaque, glassy substance.

[0003] Potassium dihydrogen phosphate (KH2PO4) requires a flash evaporation process for separation and purification during its production. The flash gas is then dried, and the separated material is collected. After collection, the material needs to be transferred and sieved, resulting in low processing efficiency. Therefore, equipment integration is necessary to improve KH2PO4 production efficiency. We propose a KH2PO4 sieve device with flash drying capabilities to address these issues. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a sieving device for potassium dihydrogen phosphate with flash drying function. It can flash evaporate, dry, separate and sieve saturated potassium dihydrogen phosphate, effectively improving the production efficiency of high potassium dihydrogen phosphate.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution.

[0008] A sieving device for potassium dihydrogen phosphate with flash drying function includes a flash tank, a flash gas port, a liquid outlet port and a liquid inlet port fixedly connected to the flash tank, and a pressure reducing valve installed on the liquid inlet port. A drying tank is installed at the flash gas port.

[0009] The output end of the drying tank is connected to a cyclone separator;

[0010] A screening box is installed below the cyclone separator. The top of the screening box has a feed inlet. A corrugated hose is connected between the feed inlet and the discharge port of the cyclone separator. A vibration motor is fixedly connected to the screening box via a base on one side of the feed inlet.

[0011] A screen is installed on the inner side of the sieving box. A guide protrusion is fixedly connected to the sieving box below the screen. Guide columns are symmetrically fixedly connected to the outer side wall of the sieving box. Guide frames are symmetrically fixedly connected to the bottom of the sieving box and are slidably connected to the guide columns. A spring is installed between the guide frame and the sieving box.

[0012] Furthermore, both the screen and the guide protrusion are angled, and the angles between the screen and the guide protrusion are opposite.

[0013] Furthermore, the sieving box has a first discharge port on the side wall corresponding to the end of the screen.

[0014] Furthermore, the sieve box has a second discharge port on the side wall corresponding to the end of the guide boss.

[0015] Furthermore, the end of the guide frame is provided with a guide hole, and the inner wall of the guide hole is in contact with the outer wall of the guide column head.

[0016] Furthermore, one end of the spring is connected to the sieve box, and the other end of the spring is connected to the guide frame.

[0017] Furthermore, the flash gas interface, the dryer and the cyclone separator are all connected by flanges, and sealing gaskets are installed between the flanges.

[0018] 3. Beneficial effects

[0019] Compared with existing technologies, the advantages of this utility model are:

[0020] (1) In this scheme, a saturated potassium dihydrogen phosphate solution under high pressure is transported to a flash tank through a liquid inlet. At the same time, a pressure reducing valve is used to reduce the pressure in the flash tank. When the saturated liquid under high pressure suddenly enters a low-pressure environment, the boiling point of the liquid decreases due to the pressure reduction. Some of the liquid absorbs latent heat and vaporizes instantaneously, forming a gas-liquid two-phase mixture. The gas is introduced into a drying tank through a flash gas inlet. After drying, it enters a cyclone separator to separate solid particles. Under the action of gravity, the solid particles enter the inner side of the sieve box through a corrugated hose and feed inlet. By turning on the vibration motor, the sieve box vibrates under the action of spring force and the guide column head slides with the guide frame. Under the action of vibration force, the potassium dihydrogen phosphate solid particles are screened through the screen. Particles with qualified size are screened out, while particles with unqualified size are retained by the screen, which effectively improves the production efficiency of high potassium dihydrogen phosphate.

[0021] (2) In this scheme, potassium dihydrogen phosphate solid particles are screened by a screen under the action of vibration. Particles with qualified particle size are screened out, while those with unqualified particle size are retained by the screen. Potassium dihydrogen phosphate solid particles with qualified particle size are discharged from the second discharge port, while those with unqualified particle size are discharged from the first discharge port, which is beneficial to the sorting of potassium dihydrogen phosphate solid particles. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the external structure of the sieve box of this utility model;

[0024] Figure 3 This is a side view of the sieving box of this utility model;

[0025] Figure 4 This is a cross-sectional view of the AA section of the sieve box of this utility model.

[0026] Explanation of the labels in the diagram:

[0027] 1. Flash tank; 2. Flash gas inlet; 3. Liquid outlet inlet; 4. Liquid inlet inlet; 5. Pressure reducing valve; 6. Drying tank; 7. Cyclone separator; 8. Sieve box; 9. Feed inlet; 10. Corrugated hose; 11. Vibrating motor; 12. Screen; 13. Guide boss; 14. First discharge port; 15. Second discharge port; 16. Guide column head; 17. Guide frame; 18. Spring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0029] Example:

[0030] Please see Figure 1-4 A sieving device for potassium dihydrogen phosphate with flash drying function includes a flash tank 1, a flash gas interface 2, a liquid outlet interface 3 and a liquid inlet interface 4 fixedly connected to the flash tank 1, and a pressure reducing valve 5 installed on the liquid inlet interface 4. A drying tank 6 is installed at the flash gas interface 2.

[0031] The output end of the drying tank 6 is connected to a cyclone separator 7;

[0032] A screening box 8 is installed below the cyclone separator 7. A feed inlet 9 is opened on the top of the screening box 8. A corrugated hose 10 is connected between the feed inlet 9 and the discharge port of the cyclone separator 7. A vibration motor 11 is fixedly connected to the screening box 8 via a base on one side of the feed inlet 9.

[0033] A screen 12 is installed on the inner side of the sieve box 8. A guide protrusion 13 is fixedly connected to the sieve box 8 below the screen 12. Guide column heads 16 are symmetrically fixedly connected to the outer side wall of the sieve box 8. Guide frame 17 is symmetrically fixedly connected to the bottom of the sieve box 8 and is slidably connected to the guide column heads 16. A spring 18 is installed between the guide frame 17 and the sieve box 8.

[0034] It should be noted that, in operation, this potassium dihydrogen phosphate sieving equipment with flash drying function works by supplying a high-pressure saturated potassium dihydrogen phosphate solution to the flash tank 1 through the liquid inlet 4. Simultaneously, the pressure in the flash tank 1 is reduced using the pressure reducing valve 5. When the high-pressure saturated liquid suddenly enters the low-pressure environment, the boiling point of the liquid decreases due to the pressure reduction. Part of the liquid absorbs latent heat and vaporizes instantaneously, forming a gas-liquid two-phase mixture. The gas is then introduced into the drying tank 6 through the flash gas inlet 2. After drying, the gas enters the cyclone separator. In step 7, solid particles are separated. Under the action of gravity, the solid particles enter the inner side of the screening box 8 through the corrugated hose 10 and the feed port 9. By turning on the vibration motor 11, the screening box 8 vibrates under the action of the spring 18 and the guide column head 16 and the guide frame 17 slide. Under the action of vibration, the potassium dihydrogen phosphate solid particles are screened through the screen 12. Particles with qualified size are screened out, while particles with unqualified size are intercepted by the screen 12, which effectively improves the production efficiency of potassium dihydrogen phosphate.

[0035] like Figure 4 As shown, the screen 12 and the guide protrusion 13 are both set at an angle, and the angles between the screen 12 and the guide protrusion 13 are reversed. The sieve box 8 has a first discharge port 14 on the side wall corresponding to the end of the screen 12, and a second discharge port 15 on the side wall corresponding to the end of the guide protrusion 13.

[0036] It should be noted that, under the action of vibration, potassium dihydrogen phosphate solid particles are screened through screen 12. Particles with qualified size are screened out, while those with unqualified size are retained by screen 12. Potassium dihydrogen phosphate solid particles with qualified size are discharged from the second discharge port 15, while those with unqualified size are discharged from the first discharge port 14, which is beneficial to the sorting of potassium dihydrogen phosphate solid particles.

[0037] like Figure 1As shown, the end of the guide frame 17 is provided with a guide hole, and the inner wall of the guide hole is in contact with the outer wall of the guide column head 16. One end of the spring 18 is connected to the sieve box 8, and the other end of the spring 18 is connected to the guide frame 17.

[0038] It should be noted that the stability of the guide column head 16 and the guide frame 17 during the movement is ensured, so that the sieve box 8 vibrates as it slides up and down.

[0039] like Figure 1 As shown, the flash gas interface 2, the dryer 6 and the cyclone separator 7 are all connected by flanges, and sealing gaskets are installed between the flanges.

[0040] It should be noted that the sealing effect of flash gas interface 2, dryer 6 and cyclone separator 7 is ensured to prevent leakage.

[0041] In use: A saturated potassium dihydrogen phosphate solution under high pressure is fed into the flash tank 1 through the inlet port 4. At the same time, the pressure in the flash tank 1 is reduced by the pressure reducing valve 5. When the saturated liquid under high pressure suddenly enters the low-pressure environment, the boiling point of the liquid decreases due to the pressure reduction. Some of the liquid absorbs latent heat and vaporizes instantly, forming a gas-liquid two-phase mixture. The gas is introduced into the drying tank 6 through the flash gas port 2. After drying, it enters the cyclone separator 7 to separate solid particles. Under the action of gravity, the solid particles enter the inner side of the sieve box 8 through the corrugated hose 10 and the feed port 9. By turning on the vibration motor 11, under the action of the spring 18, the guide column head 16 slides with the guide frame 17 to make the sieve box 8 vibrate. Under the action of vibration, the potassium dihydrogen phosphate solid particles are screened through the screen 12. Particles with qualified size are screened out, while particles with unqualified size are intercepted by the screen 12.

[0042] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A sieving device for potassium dihydrogen phosphate with flash drying function, comprising a flash tank (1), a flash gas port (2), a liquid outlet port (3), and a liquid inlet port (4) fixedly connected to the flash tank (1), and a pressure reducing valve (5) installed on the liquid inlet port (4), characterized in that: A drying tank (6) is installed at the flash port (2); The output end of the drying tank (6) is connected to a cyclone separator (7); A sieve box (8) is installed below the cyclone separator (7). A feed inlet (9) is provided on the top of the sieve box (8). A corrugated hose (10) is connected between the feed inlet (9) and the discharge port of the cyclone separator (7). A vibrating motor (11) is provided on one side of the feed inlet (9) and is fixedly connected to the sieve box (8) through a base. A screen (12) is installed on the inner side of the sieve box (8). A guide boss (13) is fixedly connected to the sieve box (8) below the screen (12). Guide columns (16) are symmetrically fixedly connected to the outer side wall of the sieve box (8). A guide frame (17) is symmetrically fixedly connected to the bottom of the sieve box (8) and is slidably connected to the guide column (16). A spring (18) is installed between the guide frame (17) and the sieve box (8).

2. The sieving equipment for potassium dihydrogen phosphate with flash drying function according to claim 1, characterized in that: The screen (12) and the guide protrusion (13) are both set at an angle, and the angles between the screen (12) and the guide protrusion (13) are reversed.

3. The sieving equipment for potassium dihydrogen phosphate with flash drying function according to claim 1, characterized in that: The sieve box (8) has a first discharge port (14) on the side wall corresponding to the end of the sieve (12).

4. The sieving equipment for potassium dihydrogen phosphate with flash drying function according to claim 1, characterized in that: The sieve box (8) has a second discharge port (15) on the side wall corresponding to the end of the guide boss (13).

5. The sieving equipment for potassium dihydrogen phosphate with flash drying function according to claim 1, characterized in that: The guide frame (17) has a guide hole at its end, and the inner wall of the guide hole is in contact with the outer wall of the guide column head (16).

6. The sieving equipment for potassium dihydrogen phosphate with flash drying function according to claim 1, characterized in that: One end of the spring (18) is connected to the sieve box (8), and the other end of the spring (18) is connected to the guide frame (17).

7. The sieving equipment for potassium dihydrogen phosphate with flash drying function according to claim 1, characterized in that: The flash gas inlet (2), the dryer (6) and the cyclone separator (7) are all connected by flanges, and sealing gaskets are installed between the flanges.

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