Spray drying device for tungsten powder preparation

Abstract

The utility model belongs to the technical field of tungsten powder preparation, and relates to a spray drying device for tungsten powder preparation, which comprises a mounting frame, a reaction tank and a storage tank are fixedly mounted on the mounting frame, a gear ring is rotatably connected to the inner wall of the reaction tank, two scraping rods are symmetrically and fixedly connected to the bottom of the gear ring, and the scraping rods are slidably connected to the inner wall of the reaction tank. A material receiving assembly is arranged at the bottom of the reaction tank, a stirring assembly is rotationally arranged in the material storage tank, a driving assembly is arranged at the top of the material storage tank and drives the stirring assembly and the gear ring to rotate, material conveying assemblies are arranged on the material storage tank and the reaction tank, and an air injection assembly is arranged at the top in the reaction tank. The air injection end of the air injection assembly is located outside the discharging end of the conveying assembly. The material storage tank has the advantages that the motor is started to drive the rotating shaft and the stirring rod to rotate, so that the stirring rod stirs materials in the material storage tank, the materials in the material storage tank are uniformly mixed, and the condition of precipitation is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of tungsten powder preparation technology, and relates to a spray drying device for tungsten powder preparation. Background Technology

[0002] The preparation process of tungsten powder mainly includes raw material preparation, powder preparation, and powder treatment. In the preparation process of tungsten powder, it is generally necessary to spray the prepared tungsten powder. An important intermediate step is to dry the tungsten powder with high water content into dry tungsten powder. Therefore, a spray drying device for tungsten powder preparation is needed.

[0003] A spray drying apparatus for tungsten powder preparation disclosed in Chinese patent CN221706042U includes a drying cylinder, a discharge pipe at the lower end of the drying cylinder, a first side frame on the left side wall of the drying cylinder, a second side frame on the right side wall of the drying cylinder, a cylinder cover at the top of the drying cylinder, an atomizer body mounted on the first side frame, a main liquid delivery pipe on the atomizer body, a liquid distribution ring pipe connected to the main liquid delivery pipe, and a liquid distribution ring pipe connected to a liquid distribution nozzle.

[0004] The spray drying device delivers liquid tungsten material inside the atomizer body to each sub-atomizing nozzle through the main liquid delivery pipe and the sub-liquid ring pipe. Since the liquid tungsten material is located inside the atomizer body, the solid material in the liquid tungsten material is prone to precipitation during long-term spraying. When a large amount of solid material is extracted, it can easily cause blockage of the sub-atomizing nozzle.

[0005] To address the aforementioned problems, this invention proposes a spray drying device for tungsten powder preparation. Utility Model Content

[0006] To address the problems existing in the background technology, this utility model proposes a spray drying device for tungsten powder preparation.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: it includes a mounting frame, on which a reaction tank and a storage tank are fixedly mounted. A toothed ring is rotatably connected to the inner wall of the reaction tank. Two scrapers are symmetrically fixedly connected to the bottom of the toothed ring. The scrapers are slidably connected to the inner wall of the reaction tank. A material receiving assembly is provided at the bottom of the reaction tank.

[0008] The storage tank is equipped with a stirring assembly that rotates inside, and a drive assembly is provided on the top of the storage tank. The drive assembly drives the stirring assembly and the gear ring to rotate.

[0009] The storage tank and the reaction tank are equipped with material conveying components. The top of the reaction tank is equipped with a jetting component, and the jetting end of the jetting component is located outside the discharge end of the conveying component.

[0010] Furthermore, the bottom of the reaction vessel is funnel-shaped, the bottom of the scraper is inclined, the shape of the scraper is adapted to the shape of the bottom of the reaction vessel, and a discharge port is opened at the bottom of the reaction vessel, with the receiving component connected to the discharge port.

[0011] Furthermore, the receiving assembly includes a collection box, the top of which is fixedly connected to a discharge pipe, the top of which is fixedly connected to the bottom of the discharge port of the reaction vessel.

[0012] A ventilation hole is provided on one side of the collection box, and a filter screen is fixedly installed inside the ventilation hole. A ventilation pipe is fixedly connected to the ventilation hole on one side of the collection box.

[0013] Furthermore, the stirring assembly includes a rotating shaft, which is rotatably connected to the inside of the storage tank. The rotating shaft is vertically arranged, and several stirring rods are uniformly fixedly connected to the outer surface of the rotating shaft. The stirring rods are horizontally arranged.

[0014] Furthermore, the drive assembly includes a motor, a support rod is fixedly connected to the top of the storage tank, the motor is fixedly connected to the top of the support rod, and the top of the rotating shaft rotates through the top surface of the storage tank and is then fixedly connected to the output end of the motor.

[0015] The top of the storage tank is rotatably connected to a connecting shaft, and a gear is fixedly sleeved on the connecting shaft. The gear meshes with a gear ring, and a belt is driven on the connecting shaft and the rotating shaft.

[0016] Furthermore, the conveying assembly includes a pump body, which is fixedly connected to the outer surface of the top of the reaction vessel. An input pipe is fixedly connected to the input end of the pump body, and an inverted U-shaped second connecting pipe is fixedly connected to one end of the input pipe. Both ends of the second connecting pipe extend into the interior of the storage tank.

[0017] The pump body is fixedly connected to a third connecting pipe at its output end. The third connecting pipe passes through the side of the reaction vessel and is fixedly connected to a nozzle at its end.

[0018] Furthermore, the jet assembly includes a hot air blower, which is fixedly connected to the top of the reaction vessel. A first connecting pipe is fixedly connected to the air outlet of the hot air blower. The first connecting pipe is fixedly connected through the top surface of the reaction vessel. An annular air outlet pipe is fixedly connected to the end of the first connecting pipe, and the nozzle is located in the middle of the air outlet pipe.

[0019] Several nozzles are uniformly fixedly connected to the inner wall of the air outlet pipe, and the air outlets of the nozzles are all facing the nozzle head.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The spray drying device for tungsten powder preparation has a rotating shaft and a stirring rod inside the storage tank. When the material in the storage tank is extracted, the motor is started to drive the rotating shaft and stirring rod to rotate, so that the stirring rod agitates the material in the storage tank, making the material in the storage tank evenly mixed and reducing sedimentation.

[0022] 2. The spray drying device for tungsten powder preparation is equipped with a belt. When the motor drives the rotating shaft to rotate, the belt drives the gear to rotate, which in turn drives the toothed ring to rotate. This causes the scraper to move on the inner wall of the reaction vessel, allowing the scraper to remove the tungsten powder from the inner wall of the reaction vessel. This eliminates the need to drive the rotating shaft and the scraper separately, thus reducing production costs. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 This is a cross-sectional view of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the reaction vessel in this utility model;

[0026] Figure 4 This is a schematic diagram of the scraper rod in this utility model.

[0027] In the diagram: 1. Reaction vessel; 2. Mounting frame; 3. Storage tank; 4. Hot air blower; 5. First connecting pipe; 6. Air outlet pipe; 7. Spray pipe; 8. Fixing rod; 9. Pump body; 10. Second connecting pipe; 11. Third connecting pipe; 12. Nozzle; 13. Motor; 14. Rotating shaft; 15. Stirring rod; 16. Belt; 17. Gear; 18. Gear ring; 19. Scraper; 20. Feed pipe; 21. Collection box; 22. Filter screen; 23. Ventilation pipe. 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. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] like Figures 1-4 As shown, the technical solution adopted by this utility model is as follows: a spray drying device for tungsten powder preparation, including a mounting frame 2, on which a reaction vessel 1 and a storage tank 3 are fixedly mounted. The storage tank 3 contains liquid tungsten material, which is tungsten powder with a high water content as described in the prior art.

[0030] A toothed ring 18 is rotatably connected to the inner wall of reaction vessel 1, and the toothed ring 18 is in a sealing sliding fit with the inner wall of reaction vessel 1. Two scraper rods 19 are symmetrically fixedly connected to the bottom of the toothed ring 18, and the scraper rods 19 are slidably connected to the inner wall of reaction vessel 1.

[0031] The bottom of reaction vessel 1 is funnel-shaped. The bottom of scraper 19 is inclined, and the shape of scraper 19 is adapted to the shape of the bottom of reaction vessel 1. This is to facilitate the scraper 19 in scraping away tungsten powder on the inner wall of reaction vessel 1 and reduce tungsten powder residue.

[0032] The storage tank 3 is equipped with a rotating stirring component inside.

[0033] The stirring assembly includes a rotating shaft 14, which is rotatably connected to the inside of the storage tank 3. The top end of the rotating shaft 14 is rotatably connected to the top surface of the storage tank 3, and the rotating shaft 14 is vertically arranged. Several stirring rods 15 are uniformly fixedly connected to the outer surface of the rotating shaft 14, and the stirring rods 15 are horizontally arranged. Rotation of the rotating shaft 14 will drive the stirring rods 15 to rotate, causing the stirring rods 15 to agitate the liquid tungsten material in the storage tank 3.

[0034] A drive assembly is provided on the top of the storage tank 3, which drives the stirring assembly and the toothed ring 18 to rotate.

[0035] The drive assembly includes a motor 13. A support rod is fixedly connected to the top of the storage tank 3, and the motor 13 is fixedly connected to the top of the support rod. The top end of the rotating shaft 14 rotates through the top surface of the storage tank 3 and is then fixedly connected to the output end of the motor 13. The motor 13 drives the rotating shaft 14 to rotate.

[0036] A connecting shaft is rotatably connected to the top of the storage tank 3, and a gear 17 is fixedly sleeved on the connecting shaft. The gear 17 meshes with the gear ring 18. A relief groove is provided on the side of the storage tank 3, and the gear 17 is located in the relief groove. The rotation of the gear 17 drives the gear ring 18 to rotate.

[0037] A belt 16 is fitted onto the connecting shaft and the rotating shaft 14. Pulleys are fixedly fitted onto both the connecting shaft and the rotating shaft 14, and the belt 16 is tightly fitted onto the two pulleys. This is a commonly used belt drive assembly, and will not be described in detail here.

[0038] Material conveying assemblies are installed on storage tank 3 and reaction tank 1. An air jet assembly is installed at the top inside reaction tank 1, with the jet nozzle located outside the discharge end of the conveying assembly. This facilitates the drying of the material conveyed by the conveying assembly by the air jet assembly.

[0039] The conveying assembly includes a pump body 9, which is fixedly connected to the outer surface of the top of the reaction vessel 1. An input pipe is fixedly connected to the input end of the pump body 9, and an inverted U-shaped second connecting pipe 10 is fixedly connected to one end of the input pipe. Both ends of the second connecting pipe 10 extend into the interior of the storage tank 3. This allows the pump body 9 to extract material from the storage tank 3 through the second connecting pipe 10.

[0040] A third connecting pipe 11 is fixedly connected to the output end of the pump body 9. The third connecting pipe 11 is fixedly connected to the side of the reaction vessel 1, and a nozzle 12 is fixedly connected to the end of the third connecting pipe 11. Material in the second connecting pipe 10 enters the third connecting pipe 11 and is then sprayed out through the nozzle 12, which is a high-pressure nozzle. This is consistent with the case in patent CN221706042U mentioned in the background art, where liquid tungsten material is atomized into tiny droplets through a high-pressure nozzle, and is considered prior art.

[0041] A fixing rod 8 is fixedly connected to the top of the reaction vessel 1, and a third connecting pipe 11 is fixedly inserted through the fixing rod 8. The fixing rod 8 increases the stability of the third connecting pipe 11.

[0042] The jet assembly includes a hot air blower 4, which is fixedly connected to the top of the reaction vessel 1. A first connecting pipe 5 is fixedly connected to the air outlet of the hot air blower 4, and the first connecting pipe 5 is fixedly connected through the top surface of the reaction vessel 1. An annular air outlet pipe 6 is fixedly connected to the end of the first connecting pipe 5, and a nozzle 12 is located in the middle of the air outlet pipe 6. This allows the hot air blower 4 to pass hot air into the interior of the air outlet pipe 6. The air outlet pipe 6 is fixedly connected to the bottom of the fixing rod 8.

[0043] Several nozzles 7 are evenly fixedly connected to the inner wall of the air outlet pipe 6, and the air outlets of the nozzles 7 all face the nozzle head 12. This allows the hot air in the air outlet pipe 6 to be sprayed through the nozzles 7 onto the material sprayed out of the nozzle head 12, thereby achieving the purpose of spray drying.

[0044] A material receiving assembly is installed at the bottom of reaction vessel 1.

[0045] A discharge port is provided at the bottom of the reaction vessel 1, and the receiving assembly is connected to the discharge port. This allows the dried tungsten powder inside the reaction vessel 1 to be discharged through the discharge port.

[0046] The receiving assembly includes a collection box 21. A discharge pipe 20 is fixedly connected to the top of the collection box 21, and the top of the discharge pipe 20 is fixedly connected to the bottom of the discharge port of the reaction vessel 1. This allows the tungsten powder in the discharge port to fall into the collection box 21 for collection.

[0047] A ventilation hole is provided on one side of the collection box 21, and a filter screen 22 is fixedly installed inside the ventilation hole. A ventilation pipe 23 is fixedly connected to the ventilation hole on one side of the collection box 21. The air in the reaction vessel 1 is discharged through the ventilation pipe 23, and the filter screen 22 filters the tungsten powder.

[0048] Working principle:

[0049] In use, the liquid tungsten material to be spray-dried is introduced into the storage tank 3. The liquid tungsten material is tungsten powder with a high water content as described in the background art. For ease of description, the liquid tungsten material in the storage tank 3 is referred to simply as the material.

[0050] Start the hot air blower 4, pump body 9, and motor 13.

[0051] The hot air blower 4 blows hot air into the first connecting pipe 5, the hot air in the first connecting pipe 5 enters the air outlet pipe 6, and then the hot air is sprayed out through the nozzle 7.

[0052] Pump body 9 draws material from storage tank 3 through second connecting pipe 10. Material in second connecting pipe 10 enters third connecting pipe 11 and is then sprayed out through nozzle 12. Since nozzle 12 is a high-pressure nozzle, the material is sprayed out in the form of tiny droplets.

[0053] The hot gas ejected from nozzle 7 blows towards the material ejected from nozzle 12. Utilizing the principles of convective and radiative heat transfer between droplets and hot gas, the liquid tungsten material is instantly evaporated and dried to obtain solid tungsten powder. This is specifically described in patent CN221706042U mentioned in the background art and is existing technology.

[0054] The dried tungsten powder falls into the interior of reaction vessel 1, and then enters the interior of collection box 21 through feed pipe 20. The gas inside reaction vessel 1 is discharged through ventilation pipe 23, and filter screen 22 filters the tungsten powder, leaving it in collection box 21.

[0055] Motor 13 drives shaft 14 to rotate, which in turn causes stirring rod 15 to rotate, thereby agitating the material in storage tank 3 and reducing material sedimentation.

[0056] When the rotating shaft 14 rotates, it drives the connecting shaft to rotate via the belt 16, causing the gear 17 to rotate. The gear 17 drives the gear ring 18 to rotate, causing the scraper 19 to slide on the inner wall of the reaction vessel 1, thereby scraping off the tungsten powder on the inner wall of the reaction vessel 1 and reducing tungsten powder residue.

[0057] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A spray drying apparatus for tungsten powder preparation, characterized in that, The system includes a mounting frame (2), on which a reaction tank (1) and a storage tank (3) are fixedly mounted. A toothed ring (18) is rotatably connected to the inner wall of the reaction tank (1). Two scrapers (19) are symmetrically fixedly connected to the bottom of the toothed ring (18). The scrapers (19) are slidably connected to the inner wall of the reaction tank (1). A receiving assembly is provided at the bottom of the reaction tank (1). The storage tank (3) is equipped with a stirring assembly inside, and a driving assembly is provided on the top of the storage tank (3). The driving assembly drives the stirring assembly and the toothed ring (18) to rotate. Material conveying components are provided on the storage tank (3) and the reaction tank (1). A jet assembly is provided on the top of the reaction tank (1), and the jet end of the jet assembly is located outside the discharge end of the conveying component.

2. The spray drying apparatus for tungsten powder preparation according to claim 1, characterized in that: The bottom of the reaction vessel (1) is funnel-shaped, and the bottom of the scraper (19) is inclined. The shape of the scraper (19) is adapted to the shape of the bottom of the reaction vessel (1). The bottom of the reaction vessel (1) is provided with a discharge port, and the receiving component is connected to the discharge port.

3. The spray drying apparatus for tungsten powder preparation according to claim 2, characterized in that: The receiving assembly includes a collection box (21), the top of which is fixedly connected to a discharge pipe (20), and the top of the discharge pipe (20) is fixedly connected to the bottom of the discharge port of the reaction vessel (1). The material collection box (21) has a ventilation hole on one side, and a filter screen (22) is fixedly installed inside the ventilation hole. A ventilation pipe (23) is fixedly connected to the ventilation hole on one side of the material collection box (21).

4. The spray drying apparatus for tungsten powder preparation according to claim 1, characterized in that: The stirring assembly includes a rotating shaft (14), which is rotatably connected to the inside of the storage tank (3). The rotating shaft (14) is vertically arranged, and several stirring rods (15) are uniformly fixedly connected to the outer surface of the rotating shaft (14). The stirring rods (15) are horizontally arranged.

5. The spray drying apparatus for tungsten powder preparation according to claim 4, characterized in that: The drive assembly includes a motor (13), a support rod is fixedly connected to the top of the storage tank (3), the motor (13) is fixedly connected to the top of the support rod, and the top of the rotating shaft (14) rotates through the top surface of the storage tank (3) and is fixedly connected to the output end of the motor (13). The top of the storage tank (3) is rotatably connected to a connecting shaft, and a gear (17) is fixedly sleeved on the connecting shaft. The gear (17) meshes with a gear ring (18), and a belt (16) is driven on the connecting shaft and the rotating shaft (14).

6. The spray drying apparatus for tungsten powder preparation according to claim 1, characterized in that: The conveying assembly includes a pump body (9), which is fixedly connected to the outer surface of the top of the reaction vessel (1). The input end of the pump body (9) is fixedly connected to an input pipe, and one end of the input pipe is fixedly connected to an inverted U-shaped second connecting pipe (10). Both ends of the second connecting pipe (10) extend into the interior of the storage tank (3). The output end of the pump body (9) is fixedly connected to a third connecting pipe (11), which is fixedly connected through the side of the reaction vessel (1), and a nozzle (12) is fixedly connected to the end of the third connecting pipe (11).

7. The spray drying apparatus for tungsten powder preparation according to claim 6, characterized in that: The jet assembly includes a hot air blower (4), which is fixedly connected to the top of the reaction tank (1). A first connecting pipe (5) is fixedly connected to the air outlet of the hot air blower (4). The first connecting pipe (5) is fixedly connected through the top surface of the reaction tank (1). An annular air outlet pipe (6) is fixedly connected to the end of the first connecting pipe (5). The nozzle (12) is located in the middle of the air outlet pipe (6). Several nozzles (7) are uniformly fixedly connected to the inner wall of the air outlet pipe (6), and the air outlets of the nozzles (7) are all facing the nozzle (12).

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