Simple fluidized bed dryer for laboratory

Abstract

The utility model discloses a simple fluidized bed dryer for a laboratory. The simple fluidized bed dryer comprises a fluidized bed main body, a heat exchange coil and a gas flow meter, and the upper end and the lower end of the fluidized bed main body are provided with connecting ports, the connecting port at the upper end is a pipeline clamping sleeve and can be emptied or connected with a vacuum system as required during use, and the lower end of the fluidized bed main body is connected with the outlet end at the upper part of the heat exchange coil. And the inlet end of the lower part of the heat exchange coil pipe is connected with the gas flow meter and is used for controlling the gas flow in the fluidized bed main body. When the device is used, extra power supply and gas supply are not needed, existing equipment in a laboratory can be used for operation, complex design is avoided, and the equipment machining cost is reduced.

Description

Technical Field

[0001] The utility model belongs to a rapid drying device for laboratory use, and particularly relates to a fluidized bed dryer. Background Art

[0002] With the development of the times, great progress has been made in drying technologies and drying devices. In the drying of bulk materials, fluidized bed drying technology has been more widely applied. Fluidized bed drying can achieve large capacity with small equipment and is suitable for the drying of heat-sensitive bulk materials. It has also been developed in the drying of solutions and suspended materials. Considerable progress has been made in the research of industrial fluidized bed dryers, such as pulsed fluidized beds, etc., which have solved many deficiencies of existing fluidized bed technologies. However, there is still a blank in the fluidized beds for laboratory small-scale tests. Existing industrial equipment is either huge in size or complex in structure, consuming a great deal during material testing, especially for high-value materials, which is very inappropriate. Summary of the Utility Model

[0003] In view of the above problems of the prior art, we have designed a simple fluidized bed dryer for laboratory use. By reasonably configuring the fluidized bed main body, heat exchange coil and flowmeter, the above-mentioned problems are solved. Thus, a device is provided that can solve the fluidized bed drying problem of a small amount of materials in the laboratory, and the device can perform heating drying, cooling drying, vacuum drying of materials and any combination of the foregoing drying methods. Specifically, the utility model includes the following technical solutions.

[0004] A simple fluidized bed dryer for laboratory use, comprising a fluidized bed main body, a heat exchange coil and a gas flowmeter. Both the upper end and the lower end of the fluidized bed main body are provided with connection ports. One end of the heat exchange pipeline is connected to the lower port of the fluidized bed main body, and a pipeline ferrule is arranged at the upper port of the fluidized bed main body, which can be connected to a vacuum system or emptied to an exhaust gas system when needed. The other end of the heat exchange coil is connected to the flowmeter, and the other end of the flowmeter is configured with a pipeline ferrule, which can be connected to a nitrogen source or an air source.

[0005] Inside the fluidized bed main body, there is a filter plate for gas distribution and preventing materials from being blown out.

[0006] One side of the fluidized bed main body is provided with a support assembly for supporting the reactor shell;

[0007] Preferably, the fluidized bed main body is made of polytetrafluoroethylene transparent material.

[0008] In one embodiment, two filter plates are arranged inside the fluidized bed main body, and the filter plates are fixed inside the fluidized bed main body by the head. An air inlet pipe is connected to the lower head, and an outlet pipeline is connected to the upper head. A pipeline ferrule is arranged at the outlet, which can be connected to an emptying or vacuum system.

[0009] It should be understood that the term "connection" as used herein includes detachable fixed connection or movable connection.

[0010] Further, the support assembly includes a bottom plate, a support vertical rod is fixedly connected to the bottom plate, a sliding clamp block is slidably connected to the support vertical rod, an internal hexagonal bolt for fixing the position of the sliding clamp block is provided on the sliding clamp block, an insertion interface is formed at one end of the sliding clamp block away from the support vertical rod, a cross bar is slidably connected in the insertion interface, an internal hexagonal bolt for locking the insertion interface is provided at the end of the sliding clamp block, a clamping head is fixedly connected to one end of the cross bar, and the fluidized bed main body is installed in the clamping head.

[0011] Preferably, the heat exchange pipe is a copper pipe with a pipe diameter of 1 / 8 inch and is processed into a spiral structure with an outer diameter of about 100 mm. The two ends of the heat exchange coil are provided with ferrule joints.

[0012] In one embodiment, the gas flowmeter is a rotameter. One end of the flowmeter is connected to the heat exchange coil through a ferrule, and the other end is provided with a ferrule joint and can be connected to a nitrogen source or an air source.

[0013] It is easy for those skilled in the art to understand that the laboratory simple fluidized bed dryer of the present invention can be used for normal temperature fluidized drying, heating fluidized drying, cooling fluidized drying and vacuum fluidized drying of common materials, and can be a combination of the above drying methods.

[0014] When the laboratory simple fluidized bed dryer of the present invention is in use, a nitrogen source or an air source can be connected to the intake end of the gas flowmeter. The heat exchange coil is placed in a heating or cooling device as needed. The material to be dried is added into the main body through the upper opening of the fluidized bed main body. Set the knob of the gas flowmeter to pass the gas through the whole system at a certain flow rate, observe the material flow state through the fluidized bed main body, set a certain temperature through the heating or cooling device, and perform fluidized drying on the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a laboratory simple fluidized bed dryer of the present invention.

[0016] Figure 2 It is a schematic structural diagram of the fluidized bed main body of the present invention.

[0017] Figure 3 It is a schematic structural diagram of the gas flowmeter in the present invention.

[0018] Figure 4 It is a schematic structural diagram of the heat exchange coil of the present invention.

[0019] Figure 5This is a schematic structural diagram of the support assembly in the present utility model.

[0020] Figure 6 This is a schematic diagram of the present utility model in use state.

[0021] Wherein: 1. Fluidized bed main body; 101. Upper filter plate; 102. Lower filter plate; 103. Upper head; 104. Lower head; 105. Inlet pipeline; 106. Outlet pipeline; 2. Heat exchange coil; 201. Outlet ferrule; 202. Inlet ferrule; 3. Gas flowmeter; 301. Inlet ferrule; 302. Outlet ferrule rod; 303. Gas flow regulating valve; 401. Sliding clamp block; 402. Cross bar; 403. Bottom plate; 404. Clamping head; 405. Support vertical rod; 501. Water bath; 502. Temperature probe; 503. Voltage regulator; 504. Numerical control temperature controller. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the simple fluidized bed dryer for laboratory use of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0023] For the sake of simplicity in description, in this article, the "simple fluidized bed dryer for laboratory use" is sometimes referred to as the "fluidized bed dryer", simply called the "fluidized bed" or the "dryer (device)", and they represent the same meaning and can be used interchangeably.

[0024] Please refer to Figures 1 - 6 , in the embodiments of the present utility model, a simple fluidized bed dryer for laboratory use is provided, which is used for small-scale test materials that need to be quickly dried or to simulate the fluidized bed drying effect in a factory, and provides key data for industrialization. It includes a fluidized bed main body 1, a heat exchange coil 2, and a gas flowmeter 3. Connecting ports are provided at both the upper and lower ends of the fluidized bed main body 1. The upper end outlet 106 is a ferrule connection and can be connected to a vacuum system or an exhaust gas system; the lower end outlet 106 is connected to the outlet ferrule 201 of the heat exchange coil 2. The inlet ferrule 202 of the heat exchange pipeline 2 is connected to the outlet ferrule 302 of the gas flowmeter 3. The inlet ferrule 301 of the gas flowmeter 3 can be connected to a nitrogen or air source.

[0025] Please refer to Figure 2, the fluidized bed main body 2 is made of transparent polytetrafluoro material, which is corrosion-resistant and convenient for observing the vulcanization state of the internal materials. Two filter plates are arranged inside the fluidized bed main body 2: an upper filter plate 101 and a lower filter plate 102. The upper filter plate 101 and the lower filter plate 102 are porous materials, and the upper and lower filter plates 101, 102 are fixed to both ends of the fluidized bed main body 1 by the upper and lower end heads 103 and 104 through their internal threads.

[0026] Please refer to Figure 4 , the heat exchange coil 2 is made of 1 / 8 copper pipe coiled into a spiral structure with a certain outer diameter to increase the contact area with the heat exchange medium. In addition, the copper pipe has a higher thermal conductivity, and can quickly heat or cool the gas in the pipe to the required temperature during use. The inlet of the heat exchange coil 3 is connected to the inlet end of the gas flowmeter 3, and the outlet end is connected to the fluidized bed main body 1.

[0027] Please participate in Figure 3 , the gas flowmeter is a rotor flowmeter 3, and the rotor flowmeter has the advantages of low cost and convenient adjustment. The inlet end of the gas flowmeter 3 is a ferrule 301, which can be connected to a nitrogen source or an air source. The air can also be generated by the vacuum system connected to the outlet end 106 of the fluidized bed main body 1, avoiding expensive equipment investment.

[0028] Please refer to Figure 1 and Figure 5 , one side of the fluidized bed main body 1 is provided with a support assembly for supporting the fluidized bed main body 1; the support assembly includes a bottom plate 403, a support vertical rod 405 is fixedly connected to the bottom plate 403, a sliding clamp block 401 is slidably connected to the support vertical rod 405, and an internal bolt for fixing the position of the sliding clamp block 401, that is, an internal hexagonal bolt, is provided on the sliding clamp block 401. An insertion port is opened at one end of the sliding clamp block 401 away from the support vertical rod 405, and a cross bar 402 is slidably connected in the insertion port. A clamping head 404 is fixedly connected to one end of the cross bar 402. The fluidized bed main body 1 is clamped in the clamping head 404. The cross bar 402 and the clamping head 404 form a clamping device 4, and the clamping head 404 is made of a material with a certain elasticity; during use, the sliding clamp block 401 can slide up and down on the support vertical rod 405, and can be fixed to the support vertical rod 405 by the internal hexagonal bolt when adjusted to the appropriate position. The cross bar 402 clamped at one end of the sliding clamp block 401 away from the support vertical rod 405 can also be adjusted as needed and fixed by the internal hexagonal bolt when adjusted to the appropriate position.

[0029] The working principle of the present utility model is as follows: during use, the fluidized bed main body 1 is fixed as required, and the heat exchange coil 2 is connected to the lower port of the fluidized bed main body 1. The inlet end of the heat exchange coil 2 is connected to a gas flow meter. After all the pipelines are connected. One working method is heating nitrogen gas fluidized drying. Connect the inlet end of the gas flow meter to a nitrogen gas source, please refer to Figure 6 , place the heat exchange coil 2 in a water bath 501. The temperature of the water or heat-conducting oil in the water bath 501 is read by a thermometer probe 502 and transmitted to a numerical control temperature controller 505 for control. After setting the temperature, add the material to be dried into the interior of the fluidized bed main body 1, and turn on the nitrogen gas. Adjust the nitrogen gas flow rate through the adjustment knob 303 on the gas flow meter 3 until it is observed that the material in the fluidized bed main body 1 reaches the fluidized state. Another working method is cooling nitrogen gas fluidized drying. The pipeline connection is the same as the above method. Place the heat exchange coil 2 in a coolant with controllable temperature. The coolant can be conveniently obtained through a commercially available low-temperature cooling circulating pump and its temperature is controlled. When the nitrogen gas cools down to the required temperature, the knob 303 on the gas flow meter 3 can be adjusted to control a certain gas flow rate for fluidized drying. There is also a working method that the outlet end of the fluidized bed main body 1 can be connected to a vacuum system to achieve reduced-pressure fluidized drying. Of course, the usage method of this fluidized bed dryer is not limited to the usage methods described above, and it can be one or several combinations of the above methods to achieve simulation verification of various fluidized dryings.

[0030] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Although this specification is described according to embodiments, not each embodiment only contains one technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A simple fluidized bed dryer for laboratory use, characterized in that, It includes a fluidized bed main body (1), a heat exchange coil (2), a gas flow meter (3) and a clamping device (4); connection ports are provided at both the upper and lower ends of the fluidized bed main body (1), one end of the heat exchange coil (2) is connected to the lower end of the fluidized bed main body (1), and the other end is connected to the gas flow meter (3); detachable end covers (103) and (104) are provided at both the upper and lower ends of the fluidized bed main body (1). Filter plates (101) and (102) are provided at both the upper and lower ends inside the fluidized bed main body (1). A support assembly for supporting the fluidized bed main body (1) is provided on one side of the fluidized bed main body (1). The heat exchange coil (2) is located below the fluidized bed main body (1), and the other end is connected to the gas flow meter (3). The outlet of the gas flow meter (3) is connected to the heat exchange coil, and the other end is a pipe ferrule (301).

2. The simple fluidized bed dryer for laboratory use according to claim 1, characterized in that, The fluidized bed main body includes end covers (103), (104) and filter plates (101), (102); the filter plates (101), (102) are made of porous materials and are fixed inside the fluidized bed main body by screwing the end covers (103), (104) through the threads at both ends of the fluidized bed main body (1).

3. The simple fluidized bed dryer for laboratory use according to claim 1, characterized in that, The heat exchange coil (2) is arranged in a spiral layout, and one of its two ends is connected to the lower part of the fluidized bed main body (1), and the other end is connected to the gas flow meter (3).

4. The simple fluidized bed dryer for laboratory use according to claim 1, characterized in that, The gas flow meter (3) is a rotameter, one end of which is provided as a pipe ferrule (301), and the other end is connected to the heat exchange coil (2).

5. The simple fluidized bed dryer for laboratory use according to claim 1, characterized in that, The support assembly includes a bottom plate (403), a support vertical rod (405) is fixedly connected to the bottom plate (403), a sliding clamp block (401) is connected to the support vertical rod (405), the sliding clamp block (401) can slide up and down on the support vertical rod (405) and can be fixed to the support vertical rod (405) by an internal bolt when sliding to the required position; the clamping device is composed of a cross bar (402) and a clamping head (404), the cross bar (402) can be fixed to the required position by the sliding clamp block (401); the clamping head (404) is made of a material with a certain elasticity; the fluidized bed main body (1) is clamped inside the clamping head (404).

6. The simple fluidized bed dryer for laboratory use according to claim 1, wherein The fluidized bed main body (1) is made of transparent corrosion-resistant material polytetrafluoroethylene, which is corrosion-resistant and convenient for observing the state of materials in the equipment at the same time.

7. The simple fluidized bed dryer for laboratory use according to claim 1, characterized in that, The heat exchange coil (2) is made of copper pipe.

8. The simple fluidized bed dryer for laboratory use according to claim 1, characterized in that, It is used for small-scale test materials that need to be quickly dried or to simulate the fluidized bed drying effect in a factory, providing key data for industrialization.

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