A laboratory solid particle drying and weighing device

Abstract

The utility model provides a kind of solid particle drying and weighing device for laboratory, comprising: drying chamber (1) for drying particulate matter, the drying chamber (1) bottom and cooling chamber (2) for cooling particulate matter are communicated, the drying chamber (1) top is equipped with feeding hopper (3) for feeding;The cooling chamber (2) bottom is equipped with material receiver (5) for receiving particulate matter, and the material receiver (5) bottom is equipped with weighing device (6);Between the feeding hopper (3) and the drying chamber (1), still be equipped with water filter device (4) for filtering water.

Description

Technical Field

[0001] This utility model relates to a drying and weighing device, and more particularly to a laboratory-use drying and weighing device for solid particles. Background Technology

[0002] This section provides only background information relevant to this disclosure and is not necessarily prior art.

[0003] In the process of drying solid particulate matter (such as particulate silicon samples after turbidity measurement experiments), the laboratory uses the traditional electric heating plate drying method. The material to be dried is spread flat on the container and exposed to the environment. The heating process usually lasts for 2 to 3 hours and requires a dedicated person to be on duty. After the material is dried and cooled naturally, it is weighed and packaged manually. The whole process requires a lot of manpower and time, has high power consumption, and low efficiency.

[0004] Because the method of drying by heating with electric heating plates has shortcomings such as high power consumption, long time, low effective utilization rate of electric heating plates and low operation safety factor, and for materials with cleanliness requirements, it is not easy to maintain a clean environment for a long time.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0006] Purpose of the invention: The technical problem to be solved by this utility model is to provide a laboratory solid particulate drying and weighing device to address the shortcomings of the existing technology.

[0007] To solve the above-mentioned technical problems, this utility model discloses a laboratory solid particulate drying and weighing device, comprising:

[0008] A drying chamber for drying particulate matter, the bottom of which is connected to a cooling chamber for cooling particulate matter, and a feed hopper for feeding material is provided at the top of the drying chamber;

[0009] The bottom of the cooling chamber is equipped with a material receiver for receiving particulate matter, and the bottom of the material receiver is equipped with a weighing device.

[0010] A water filtration device is also provided between the feed hopper and the drying chamber for filtering water.

[0011] Furthermore, the drying chamber includes:

[0012] The drying chamber shell is hollow and cylindrical. Inside the drying chamber shell, there are alternately downward inclined drying chamber material guide plates. The upper part is provided with a drying chamber nitrogen outlet for discharging nitrogen gas, and the lower part is provided with a drying chamber nitrogen inlet for inputting hot nitrogen gas. The bottom is connected to the top of the cooling chamber.

[0013] Furthermore, the cooling chamber includes:

[0014] A hollow cylindrical cooling chamber shell has a nitrogen inlet at the bottom for inputting nitrogen and a nitrogen outlet at the top for discharging nitrogen. Inside the cooling chamber shell, downward-sloping material guide plates are alternately arranged.

[0015] Furthermore, a color-changing silicone indicator tube is provided on the nitrogen outlet of the cooling chamber for measuring gas humidity.

[0016] Furthermore, the nitrogen outlet of the drying chamber is also equipped with a pressure gauge and an outlet thermometer, which are used to detect the pressure and temperature of the nitrogen gas, respectively.

[0017] Furthermore, the nitrogen inlet of the drying chamber is also equipped with a heater and an inlet thermometer for heating the input nitrogen and measuring the temperature of the heated nitrogen.

[0018] Furthermore, the water filtration device includes:

[0019] A water filter tray is installed at the bottom of the feed hopper. A liquid collection guide pipe is provided at the bottom of the water filter tray. The liquid collection guide pipe is made of soft material and extends out of the drying chamber to communicate with the liquid storage tank. A liquid level gauge for monitoring the water level is provided in the liquid storage tank.

[0020] Furthermore, the water filtration device also includes:

[0021] The feed hopper is horizontally arranged inside the drying chamber. Two parallel tracks are located below the feed hopper. A sliding plate is slidably arranged between the two tracks. The sliding plate can slide along the tracks to directly below the water filter tray. The liquid collection guide pipe passes through the sliding plate. One side of the sliding plate is connected to one end of a horizontally arranged threaded telescopic rod. The other end of the threaded telescopic rod is connected to a handwheel extending out of the drying chamber.

[0022] A pair of connecting rods are rotatably arranged above the skateboard along the track direction. The top of the connecting rods is rotatably connected to the water filter plate, forming a movable parallelogram structure with the skateboard as the bottom, the water filter plate as the top, and the connecting rods as the waist.

[0023] A first limiter is fixedly installed directly below the side of the water filter disc away from the threaded telescopic rod.

[0024] Furthermore, the filter tray is configured as a Buchner funnel structure without a protruding outer edge.

[0025] Furthermore, a vibrator is provided on the side wall of the feed hopper for vibrating the feed hopper.

[0026] Beneficial effects:

[0027] 1. The solid particulate drying device proposed in this utility model dries the material by heat exchange with high-temperature, high-purity nitrogen gas, and then cools it with low-temperature, high-purity nitrogen gas. The drying speed is fast and the effect is good.

[0028] 2. In this utility model, the drying process is isolated from the environment, ensuring the cleanliness of the material.

[0029] 3. Compared with electric heating plate drying, this utility model can significantly reduce power consumption.

[0030] 4. This utility model can achieve real-time weighing after drying, which is convenient for measurement and packaging. Attached Figure Description

[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments, and the advantages of the present invention in the above and / or other aspects will become clearer.

[0032] Figure 1 This is a schematic diagram of the overall structure.

[0033] Figure 2 This is a magnified schematic diagram of a portion of the nitrogen outlet in the drying chamber.

[0034] Figure 3 This is a partially enlarged schematic diagram of the nitrogen inlet in the drying chamber.

[0035] Figure 4 This is a schematic diagram of the overall structure of the water filtration device.

[0036] Figure 5 This is a partial structural diagram of a water filtration device.

[0037] Figure 6 This is a schematic diagram showing the state of the connecting rod leaving the limit switch.

[0038] Figure 7 This is a schematic diagram showing the state of the connecting rod approaching the limit switch.

[0039] In the diagram, 1 is the drying chamber, 101 is the drying chamber shell, 102 is the drying chamber material guide plate, 103 is the drying chamber nitrogen outlet, 104 is the drying chamber nitrogen inlet, 1031 is the pressure gauge, 1032 is the outlet thermometer, 1041 is the heater, and 1042 is the inlet thermometer.

[0040] 2 is the cooling chamber, 201 is the cooling chamber shell, 202 is the nitrogen inlet of the cooling chamber, 203 is the nitrogen outlet of the cooling chamber, 204 is the material guide plate of the cooling chamber, and 205 is the color-changing silica gel indicator tube.

[0041] 3 is the feed hopper, and 301 is the vibrator;

[0042] 4 is the water filtration device, 401 is the water filtration disc, 402 is the liquid collection guide pipe, 403 is the liquid storage tank, 404 is the liquid level gauge, 405 is the track, 406 is the slide plate, 407 is the threaded telescopic rod, 408 is the handwheel, 409 is the connecting rod, 410 is the first limit switch, and 411 is the second limit switch.

[0043] 5 is the material receiver;

[0044] 6 is the weighing device. Detailed Implementation

[0045] The overall concept of this utility model is as follows: In order to minimize pollution, reduce energy consumption, shorten drying time, and improve operational safety during the drying process of laboratory solid particles, a laboratory solid particle drying device is proposed, as detailed below:

[0046] 1. High-temperature, high-purity nitrogen gas is used as a heat source to replace electric heating plates, resulting in low power consumption and high drying efficiency.

[0047] 2. The filter tray is designed as a movable structure. When pushed to face the outlet of the feed hopper, it serves to support and filter water. When pulled away, it allows solid particles to fall onto the guide plate and enter the drying process.

[0048] 3. The filter disc can be removed and sealed by manipulating the handwheel on the externally connected threaded telescopic rod. The track serves two purposes: fixing the direction of movement of the filter disc and providing support. The linkage structure design changes the displacement of the filter disc, enabling sealing and removal. The filter disc, inspired by a Buchner funnel structure with its outer edge removed, collects and guides the water to the collection pipe after filtering most of the moisture. The multi-layered, counter-installed, downward-sloping guide plate design guides the movement trajectory of solid particles, extending their travel distance and enhancing the drying effect.

[0049] 4. This device integrates drying, cooling, and weighing, enabling materials to dry in a space isolated from the environment, maximizing cleanliness while measuring and sealing.

[0050] like Figure 1 As shown, a laboratory solid particulate drying and weighing device includes:

[0051] Drying chamber 1 for drying particulate matter includes:

[0052] The hollow cylindrical drying chamber shell 101 has downwardly inclined drying chamber material guide plates 102 alternately arranged inside the drying chamber shell 101, a drying chamber nitrogen outlet 103 at the top, and a drying chamber nitrogen inlet 104 at the bottom.

[0053] During use, nitrogen enters from the nitrogen inlet 104 of the drying chamber, passes upward through the material guide plate 102 of the drying chamber, comes into contact with the particles in the shell 101 of the drying chamber, carries away the moisture, and is discharged from the nitrogen outlet 103 of the drying chamber.

[0054] The top of the drying chamber shell 101 is provided with a feed hopper 3 for feeding materials, and the bottom narrows and connects to the top of the cooling chamber 2.

[0055] During use, the particles are dried inside the drying chamber shell 101 and then enter the cooling chamber 2 from the top for cooling.

[0056] The bottom of the cooling chamber 2 is connected to the material receiver 5, which is used to receive the particulate finished product.

[0057] The material receiver 5 is equipped with a weighing device 6 at the bottom for weighing finished products.

[0058] Cooling chamber 2 includes:

[0059] A hollow cylindrical cooling chamber shell 201 is provided with a cooling chamber nitrogen inlet 202 at the bottom and a cooling chamber nitrogen outlet 203 at the top. Inside the cooling chamber shell 201, downwardly inclined cooling chamber material guide plates 204 are alternately provided.

[0060] A color-changing silicone indicator tube 205 is also provided on the nitrogen outlet 203 of the cooling chamber for measuring gas humidity.

[0061] In use, nitrogen for cooling is introduced through the nitrogen inlet 202 of the cooling chamber. The nitrogen passes through the material guide plate 204 of the cooling chamber from bottom to top, comes into contact with the particulate matter, cools and dries it further. Then the nitrogen is discharged from the nitrogen outlet 203 of the cooling chamber, and the humidity of the discharged nitrogen is monitored by the color-changing silica gel indicator tube 205.

[0062] like Figure 2 As shown, a pressure gauge 1031 and an outlet thermometer 1032 are also provided on the nitrogen outlet 103 of the drying chamber, which are used to detect the pressure and temperature of the nitrogen, respectively.

[0063] like Figure 3 As shown, the nitrogen inlet 104 of the drying chamber is also equipped with a heater 1041 and an inlet thermometer 1042, which are used to heat the input nitrogen and measure the temperature of the heated nitrogen.

[0064] In use, the hot nitrogen gas used for drying in the drying chamber 1 can be controlled by pressure gauge 1031, outlet thermometer 1032, inlet thermometer 1042, heater 1041 and input nitrogen gas.

[0065] A water filtration device 4 is also provided between the feed hopper 3 and the drying chamber 1 for filtering water. For example... Figure 4 As shown, the water filtration device 4 includes:

[0066] A filter tray 401 is set at the bottom of the feed hopper 3. The filter tray 401 can be configured as a Buchner funnel structure without a protruding outer edge. A liquid collection guide pipe 402 is provided at its bottom. The liquid collection guide pipe 402 is made of soft material. After extending out of the drying chamber shell 101, it is connected to the liquid storage tank 403. A liquid level gauge 404 is provided in the liquid storage tank 403 to monitor the liquid level in the liquid storage tank 403.

[0067] When in use, after the dried particles enter the feed hopper 3, they first remain on the filter plate 401, and the excess water flows from the liquid collection guide pipe 402 below the filter plate 401 to the storage tank 403.

[0068] A vibrator 301 is also provided on the side wall of the feed hopper 3 to vibrate the feed hopper 3 so that the material falls from the feed hopper 3 into the drying chamber 1, reducing the residue.

[0069] like Figure 5 As shown, the water filtration device 4 also includes:

[0070] Two parallel tracks 405 are horizontally arranged inside the drying chamber 1, below the feed hopper 3. A sliding plate 406 is slidably arranged between the two parallel tracks 405. The sliding plate 406 can slide along the tracks 405 to directly below the filter plate 401. The liquid collection guide pipe 402 is arranged through the sliding plate 406. One side of the sliding plate 406 is connected to one end of a horizontally arranged threaded telescopic rod 407. The other end of the threaded telescopic rod 407 is connected to a handwheel 408 that extends out of the drying chamber shell 101.

[0071] In use, crank the handwheel 408 to rotate one end of the threaded telescopic rod 407, thereby extending and retracting, allowing the slide plate 406 to slide along the track 405.

[0072] Above the slide plate 406, along the direction of the track 405, there is a pair of connecting rods 409 that are rotatably arranged. The top of the connecting rods 409 is rotatably connected to the water filter plate 401, thereby forming a movable parallelogram with the slide plate 406 as the bottom, the water filter plate 401 as the top, and the pair of connecting rods 409 as the waist.

[0073] A first limiter 410 is fixedly installed directly below one side of the water filter tray 401, and a second limiter 411 is installed on the other side away from the water filter tray 401.

[0074] In use, when the slide plate 406 approaches the first limiter 410, that is, when it approaches directly below the filter plate 401, it is controlled by... Figure 6 The state shown is transformed into Figure 7In this state, under the reaction force of the first limiter 410, the parallelogram with the slide plate 406 as the bottom, the filter plate 401 as the top, and a pair of connecting rods 409 as the waist deforms upward into a rectangle, thereby causing the filter plate 401 to abut against the bottom outlet of the feed hopper 3. At this time, material can be fed into the feed hopper 3 and filtered.

[0075] After filtration is complete, when the slide plate 406 moves away from the first limiter 410, i.e., away from directly below the filter plate 401, it is controlled by... Figure 7 The state shown is transformed into as follows Figure 6 As shown, the rectangle with the slide plate 406 as the bottom, the filter plate 401 as the top, and a pair of connecting rods 409 as the waist deforms downward into a parallelogram, causing the filter plate 401 to move downward away from the bottom outlet of the feed hopper 3, and the particles in the feed hopper 3 fall into the drying chamber 1.

[0076] Example:

[0077] In one embodiment, the particulate matter, after being filtered of most of its moisture by a water filter tray within a confined space, continues to move under gravity through multiple layers of alternating, counter-currently installed material guide plates. It exchanges heat with the counter-flowing high-temperature, high-purity nitrogen gas, carrying away the moisture from the particulate matter. The high-temperature solid particulate matter flows downwards in the cooling chamber, exchanging heat with the counter-flowing low-temperature, high-purity nitrogen gas to achieve cooling. The drying and cooling process is isolated from the environment, ensuring the cleanliness of the material. This device consists of three parts: a drying chamber, a cooling chamber, and a weighing system, and possesses multiple performance characteristics, as detailed below:

[0078] Drying Chamber: The main body of the drying chamber is divided into upper and lower sections. The upper section is a rectangular structure. At the center of the right 1 / 4 of the long side of the upper bottom, there is a conical feed hopper with an inlet cap and an open outlet. The conical design is integrally molded with a smooth inner wall to eliminate dead corners and reduce material movement resistance. The inlet faces upwards with a diameter of 60mm, and the outlet faces downwards with a diameter of 30mm. A sealing ring is installed at the outlet section. In the reset state, a movable filter tray serves as the bottom of the feed hopper. The filter tray can be removed and sealed as needed, serving both filtration and unloading functions. The filter tray is a Buchner funnel structure without a protruding outer edge. The top is a perforated plate with rectangular holes approximately 1mm wide and 5mm long, used to filter out most of the moisture in the material. The filter tray is mounted on two tracks parallel to the long side of the upper section of the drying chamber using sliding plates. The distance between the sliding plates and the tracks is the same width, and the length is 8mm. A rectangular hole approximately 30mm long and 12mm wide is opened in the middle to allow the liquid collection guide pipe to move within the movable area. The outlet pipe of the filter tray slopes downwards at 15° and is barbed, connecting to a liquid collection guide pipe. The liquid collection guide pipe is made of flexible latex or rubber tubing and leads to a storage tank outside the upper main body. The storage tank is connected to a level gauge. Four wheels are designed on the bottom of the slide plate, each nested in a track groove. A threaded telescopic rod parallel to the track is welded to one side of the slide plate, extending horizontally to the outside of the upper main body and connecting to a handwheel. Four regularly distributed outward-pointing terminals are designed around the sides of the filter tray. Terminals corresponding to these terminals are designed on the top of the slide plate. The corresponding terminals on the top and bottom are connected to the support arm using a linkage structure. Figure 5 , Figure 6 Limiters are installed on both the left and right sides of the track. By turning the handwheel, the telescopic rod pushes the slide plate forward along the track. When the slide plate touches the first limiter, continuing to turn the handwheel causes the two pairs of connecting rods to shift. The parallelogram formed by the four support arms shifts and becomes a rectangle. During the shift, the filter plate moves vertically upward, sealing it against the outlet of the feed hopper. When water-containing material is added, most of the water is filtered out through the filter plate and flows to the storage tank outside the main body through the liquid collection guide pipe. When the liquid level in the level gauge stops rising, turning the handwheel in the opposite direction causes the telescopic rod to rotate outward in the opposite direction. The connecting rod structure shifts in the opposite direction, causing the filter plate to drop vertically. The outlet of the feed hopper separates from the filter plate. Continuing to turn the handwheel in the opposite direction causes the telescopic rod to pull the slide plate away from the gap by about 1mm. At the same time, the particles on the filter plate are scraped off by the outlet of the feed hopper. When the slide plate touches the second limiter on the left, the filter plate is completely pulled away from the bottom surface of the feed hopper outlet, and the particles in the feed hopper fall freely due to gravity. The material is dispersed and falls on a material guide plate that is bolted to the inner wall of the upper main body and extends horizontally downwards at a 15° angle at its end (see top view of the guide plate). Figure 4On the feed hopper, regularly spaced ridges protruding approximately 2mm in height are distributed on the guide plate to guide and disperse the material. The guide plate is the same width as the upper main body, with a downward-sloping end leaving a gap of approximately 10mm between it and the main body sidewall, allowing material to flow to the next level of material guide plate installed in the opposite direction. The number of guide plates can be adjusted according to the amount of material being processed. A vibrator is installed on one side of the feed hopper, starting operation immediately upon power connection. The vibration interval is adjustable, and intermittent vibration prevents wet material from sticking to the hopper wall. Since the feed hopper and main body are integrated, the fixed end of the material guide plate is fixedly connected to the main body wall. Each vibration of the vibrator causes the main body to vibrate, helping to disperse and flow the material on the guide plate. Nitrogen gas, heated by a heater, enters the drying chamber from below. A thermometer is connected to the inlet pipe. Two vertically arranged gas distribution pipes at the bottom of the drying chamber are used to evenly distribute the airflow. After heat exchange with the wet material, the evenly distributed hot nitrogen gas exits from the hot nitrogen outlet installed in the upper half of the drying chamber, opposite to the inlet. A pressure gauge and thermometer are installed on the hot nitrogen outlet pipe to indicate pressure and temperature. The cooling chamber is located directly below the drying chamber and consists of three sections. The lower section is trapezoidal with a cold nitrogen inlet on the side. The middle section is cuboid, containing a baffle plate based on the same principle as the drying chamber, and the lower section is an inverted trapezoid. The upper section has a cold nitrogen outlet on the side opposite to the air inlet, connected to a built-in color-changing silica gel indicator tube. The drying effect can be judged by observing the color change of the silica gel.

[0079] The outlet of the drying chamber and the inlet of the cooling chamber have the same shape and diameter, are bolted together for easy cleaning and disassembly, and are fitted with a sealing ring in between. The weighing system uses mass measuring instruments selected according to the required range and accuracy. It features a manual switch and can also be sealed to isolate the material from the external environment as needed.

[0080] This utility model provides a concept and method for a laboratory solid particulate drying and weighing device. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A laboratory solid particulate drying and weighing device, characterized in that, include: A drying chamber (1) for drying particulate matter, the bottom of which is connected to a cooling chamber (2) for cooling particulate matter, and a feeding hopper (3) for feeding material is provided at the top of the drying chamber (1); The cooling chamber (2) is provided with a material receiver (5) for receiving particulate matter at the bottom, and a weighing device (6) is provided at the bottom of the material receiver (5); A water filtration device (4) for filtering water is also provided between the feed hopper (3) and the drying chamber (1).

2. The laboratory solid particulate drying and weighing device according to claim 1, characterized in that, The drying chamber (1) includes: The drying chamber shell (101) is hollow and cylindrical. Inside the drying chamber shell (101) are alternately downward inclined drying chamber material guide plates (102). The upper part is provided with a drying chamber nitrogen outlet (103) for discharging nitrogen gas, and the lower part is provided with a drying chamber nitrogen inlet (104) for inputting hot nitrogen gas. The bottom is connected to the top of the cooling chamber (2).

3. The laboratory solid particulate drying and weighing device according to claim 1, characterized in that, The cooling chamber (2) includes: A hollow cylindrical cooling chamber shell (201) is provided with a cooling chamber nitrogen inlet (202) for inputting nitrogen gas at the lower part and a cooling chamber nitrogen outlet (203) for discharging nitrogen gas at the upper part. Inside the cooling chamber shell (201), there are alternately downward inclined cooling chamber material guide plates (204).

4. A laboratory solid particulate drying and weighing device according to claim 3, characterized in that, The nitrogen outlet (203) of the cooling chamber is also equipped with a color-changing silicone indicator tube (205) for measuring gas humidity.

5. A laboratory solid particulate drying and weighing device according to claim 2, characterized in that, The nitrogen outlet (103) of the drying chamber is also equipped with a pressure gauge (1031) and an outlet thermometer (1032), which are used to detect the pressure and temperature of the nitrogen gas, respectively.

6. A laboratory solid particulate drying and weighing device according to claim 2, characterized in that, The nitrogen inlet (104) of the drying chamber is also equipped with a heater (1041) and an inlet thermometer (1042) for heating the input nitrogen and measuring the temperature of the heated nitrogen.

7. A laboratory solid particulate drying and weighing device according to claim 1, characterized in that, The water filtration device (4) includes: A filter tray (401) is installed at the bottom of the feed hopper (3). A liquid collection guide pipe (402) is provided at the bottom of the filter tray (401). The liquid collection guide pipe (402) is made of soft material. After extending out of the drying chamber (1), it is connected to the liquid storage tank (403). A liquid level gauge for monitoring the water level is provided in the liquid storage tank (403).

8. A laboratory solid particulate drying and weighing device according to claim 7, characterized in that, The water filtration device (4) further includes: Two parallel tracks (405) are horizontally arranged inside the drying chamber (1). Between the two tracks (405), a sliding plate (406) is slidably arranged. The sliding plate (406) can slide along the tracks (405) to directly below the filter plate (401). The liquid collection guide pipe (402) passes through the sliding plate (406). One side of the sliding plate (406) is connected to one end of a horizontally arranged threaded telescopic rod (407). The other end of the threaded telescopic rod (407) is connected to a handwheel (408) extending out of the drying chamber (1). A pair of connecting rods (409) are rotatably arranged above the slide plate (406) along the direction of the track (405). The top of the connecting rods (409) is rotatably connected to the water filter plate (401), forming a movable parallelogram structure with the slide plate (406) as the bottom, the water filter plate (401) as the top, and the connecting rods (409) as the waist. A first limiter (410) is fixedly installed directly below the side of the filter disc (401) away from the threaded telescopic rod (407).

9. A laboratory solid particulate drying and weighing device according to claim 7, characterized in that, The filter tray (401) is configured as a Buchner funnel structure without a protruding outer edge.

10. A laboratory solid particulate drying and weighing device according to claim 1, characterized in that, The feed hopper (3) is also provided with a vibrator (301) on its side wall for vibrating the feed hopper (3).

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