Solid sublimation device capable of continuously feeding

Abstract

The utility model provides a solid sublimation device capable of continuously feeding. The solid sublimation device comprises a heating furnace, a solid sublimation unit and a feeding device, the heating furnace provides heat energy needed by sublimation, and a control panel is arranged to adjust the temperature. The solid sublimation unit is composed of a quartz tube, a quartz cylinder, a stirring motor, a stirring rod and a stirring head, the stirring motor drives the stirring rod to rotate, and uniform sublimation reaction is guaranteed. The gas inlet pipe is arranged at the bottom of the quartz tube, inert gas is input into the quartz cylinder, and the gas outlet pipe exhausts sublimation products. The feeding device comprises a charging barrel, a feeding motor, a material guide pipe and a feeding screw rod and is used for continuously conveying solid raw materials into the quartz barrel. Through stirring and inert gas flow channel design, solid raw materials are prevented from being stacked, and the sublimation efficiency is improved. The feeding amount and the stirring speed are accurately controlled, and high purity and stability of sublimation products are guaranteed. The reasonable design of the airflow channel and the protective cover avoids the blocking problem. The device is suitable for various industries and laboratories needing efficient sublimation.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of chemical equipment, concretely is a solid sublimation device of continuous feeding. BACKGROUND

[0002] Solid sublimation is a common phase transition process of matter, in which solid directly converts into gas without passing through liquid state. This process is widely applied in multiple fields such as chemistry, material science and industrial production. For example, substances such as hydrogen chloride, ammonia and iodine will undergo sublimation reaction under appropriate conditions. Therefore, the design of solid sublimation device is of great significance for improving sublimation efficiency, controlling sublimation conditions and ensuring product purity.

[0003] The existing solid sublimation device usually adopts multiple components such as heating system, sublimation reaction container and gas delivery system, but its structure is mostly single sublimation reaction container and simple heating device. The traditional sublimation device has some limitations, such as uneven heating, material accumulation, limited gas flow and low reaction efficiency. In addition, during the solid sublimation process, the purity of sublimation gas is often affected by unstable gas flow and solid raw materials, making it difficult to achieve efficient and continuous sublimation operation.

[0004] In the existing technology, although there are certain feeding devices and stirring systems, under complex sublimation environment, how to ensure continuous and stable supply of materials and how to optimize sublimation efficiency through effective stirring and gas flow control are still technical problems. Some sublimation equipment cannot effectively solve the accumulation and blockage of solid raw materials during the sublimation process, resulting in incomplete sublimation reaction or slow sublimation speed. UTILITY MODEL CONTENT

[0005] In view of the above technical deficiencies, the purpose of the utility model is to provide a solid sublimation device with continuous feeding, which improves the heating and gas delivery efficiency of raw materials during sublimation.

[0006] To achieve the above purpose, the utility model adopts the following technical scheme:

[0007] A solid sublimation device with continuous feeding, comprising a heating furnace and a solid sublimation unit, the solid sublimation unit is installed on the heating furnace, and the solid sublimation unit comprises:

[0008] Quartz tube, fixedly installed on the heating furnace, provided with an air inlet pipe at the bottom and an air outlet pipe at the top;

[0009] Quartz cylinder, fixedly installed inside the quartz tube, provided with an opening at the top;

[0010] Stirring motor, fixedly installed on the heating furnace;

[0011] A stirring rod is in transmission connection with the output shaft of the stirring motor at one end and extends into the interior of the quartz cylinder at the other end;

[0012] A stirring head is arranged in the quartz cylinder and connected with the stirring rod.

[0013] A feeder comprises a material cylinder, a feeding motor, a material guide pipe and a feeding screw rod, the material cylinder is fixed on the top of the quartz pipe, the material guide pipe is arranged in the quartz pipe and extends into the quartz cylinder at the lower end and communicates with the material cylinder at the upper end, the feeding motor is fixed on the material cylinder, and the lower end of the feeding screw rod is rotatably inserted into the feeding pipe and the upper end penetrates through the material cylinder and is in transmission connection with the output shaft of the feeding motor.

[0014] Preferably, the stirring rod is internally provided with an airflow channel, the top is provided with an air outlet, and the side is provided with an air inlet, and the air outlet and the air inlet are respectively in communication with the airflow channel.

[0015] Preferably, the stirring head comprises a sleeve ring, a protective cover, a support rod, an extension rod and a plurality of spiral blades, the lower end of the protective cover is provided with an opening, the sleeve ring is arranged in the protective cover, the axis of the sleeve ring and the axis of the protective cover coincide, the support rod is arranged between the sleeve ring and the protective cover, one end of the support rod is fixedly connected with the outer side of the sleeve ring, and the other end of the support rod is fixedly connected with the inner side of the protective cover, the sleeve ring is fixed on the top of the stirring rod, the air outlet is located in the interior of the protective cover, the extension rod is fixed on the top of the protective cover, the spiral blades are fixed on the exterior of the extension rod, and the plurality of spiral blades are distributed in a circumferential array with the axis of the extension rod as the center.

[0016] Preferably, the bottom of the protective cover is provided with a plurality of air holes, and the plurality of air holes are distributed in a circumferential array with the axis of the extension rod as the center.

[0017] Preferably, a pressure gauge is mounted on each of the air inlet pipe and the air outlet pipe.

[0018] Preferably, a feeding pipe is arranged on the material cylinder.

[0019] Compared with the prior art, the device has the following beneficial effects:

[0020] By arranging the stirring system and the inert gas flow channel, the device can realize uniform heating of the solid raw material and ensure uniform distribution of the sublimation gas in the quartz cylinder, so as to accelerate the sublimation process, improve the material conversion rate and save energy.

[0021] The rotation of the stirring head in the quartz cylinder driven by the stirring motor avoids the accumulation of the solid raw material due to temperature difference or static state in the sublimation process, and ensures the continuity and stability of the sublimation process.

[0022] The design of the gas flow channel ensures continuous and uniform delivery of inert gas. The gas flow is not affected by the rotation of the stirring rod, thereby avoiding the reduction of sublimation efficiency caused by poor gas flow and effectively ensuring the stability of the sublimation process.

[0023] The feeding screw driven by the feeding motor controls the feeding rate of the solid raw material, can realize continuous feeding, and can adjust the input according to needs, so as to ensure the uniformity and stability of the sublimation reaction and avoid incomplete sublimation reaction or excessive reaction caused by uneven feeding.

[0024] The device avoids system failure caused by material accumulation or blockage of the gas flow channel by reasonably designing the protective cover and air holes. Through the precise design and monitoring of the feeding pipe, gas outlet pipe and other components, the high reliability and low failure rate of the equipment in long-term use are ensured, and the frequency and cost of equipment maintenance are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a structural schematic view of the utility model;

[0026] Figure 2 It is a structural schematic view of the solid sublimation unit in the utility model;

[0027] Figure 3 It is a structural schematic view of the internal structure of the solid sublimation unit in the utility model;

[0028] Figure 4 It is Figure 3 It is a local enlarged view of A in the utility model;

[0029] Figure 5 It is Figure 3 It is a local enlarged view of B in the utility model;

[0030] Figure 6 It is a structural schematic view of the internal structure of the stirring head in the utility model.

[0031] Among them:

[0032] 1, heating furnace; 2, solid sublimation unit; 21, feeding motor; 22, gas outlet pipe; 23, quartz tube; 24, gas inlet pipe; 25, stirring rod; 26, stirring motor; 27, barrel; 28, feeding pipe; 29, quartz barrel; 210, stirring head; 2101, spiral blade; 2102, extension rod; 2103, support rod; 2104, collar; 2105, air hole; 2106, protective cover; 211, material guide pipe; 212, feeding screw; 213, gas flow channel; 214, gas inlet. DETAILED DESCRIPTION

[0033] The utility model will be further described below in combination with the drawings.

[0034] AsFigures 1 to 6 As shown in the figure, a continuous feeding solid sublimation device includes a heating furnace 1 and a solid sublimation unit 2. The heating furnace 1 is an existing device, and the heating furnace 1 is provided with a control panel for operating the entire device. The solid sublimation unit 2 is installed on the heating furnace 1, and the solid sublimation unit 2 includes:

[0035] A quartz tube 23 is fixedly installed on the heating furnace 1, and a gas inlet pipe 24 is arranged at the bottom and a gas outlet pipe 22 is arranged at the top. The gas inlet pipe 24 is used for inputting inert gas into the quartz tube 23, and the gas outlet pipe 22 is used for discharging sublimation products. The quartz tube 23 is designed to have good sealing performance, which can ensure the stability of the sublimation reaction environment, prevent the entry of external air, and ensure the purity of the sublimation gas.

[0036] A quartz cylinder 29 is fixedly installed inside the quartz tube 23, and an opening is arranged at the top. The inside of the quartz cylinder 29 is the main position where the sublimation reaction occurs. The use of the quartz cylinder 29 can ensure the stability of the device under high temperature conditions. Because quartz has extremely high heat resistance, corrosion resistance and low thermal expansion coefficient, it can effectively avoid structural damage caused by temperature changes during sublimation.

[0037] A stirring motor 26 is fixedly installed on the heating furnace 1. A stirring rod 25 is in transmission connection with the output shaft of the stirring motor 26 at one end and extends into the inside of the quartz cylinder 29 at the other end. A stirring head 210 is arranged in the quartz cylinder 29 and connected with the stirring rod 25. After the stirring motor 26 is started, the stirring head 210 is driven to rotate by the stirring rod 25. The stirring system not only can ensure uniform heating of the reaction materials, but also can improve the sublimation rate by enhancing the contact efficiency of the materials and the gas flow, and avoid local overheating or insufficient temperature of the raw materials during the reaction.

[0038] A feeder includes a material cylinder 27, a feeding motor 21, a material guide pipe 211 and a feeding screw 212. The material cylinder 27 is fixedly installed on the top of the quartz tube 23. The material guide pipe 211 is arranged in the quartz tube 23 and extends into the quartz cylinder 29 at the lower end and communicates with the material cylinder 27 at the upper end. The feeding motor 21 is fixedly installed on the material cylinder 27. The lower end of the feeding screw 212 is rotatably inserted into the feeding pipe, and the upper end penetrates through the material cylinder 27 and is in transmission connection with the output shaft of the feeding motor 21. Solid raw materials are placed in the material cylinder 27. When the feeding motor 21 is started, the feeding screw 212 is driven to rotate, so that the solid raw materials fall into the quartz cylinder 29 along the axis direction of the material guide pipe 211, realizing continuous feeding. This continuous feeding mode can effectively control the feeding rate of the solid raw materials, maintain the stability during the sublimation process, and avoid incomplete sublimation reaction caused by uneven feeding.

[0039] In the embodiment, the inner part of the stirring rod 25 is provided with an airflow channel 213, the top part is provided with an air outlet, and the side part is provided with an air inlet 214, and the air outlet and the air inlet 214 are communicated with the airflow channel 213 respectively; the inert gas enters into the quartz cylinder 29, enters into the airflow channel 213 through the air inlet 214, and enters into the quartz cylinder 29 through the air outlet, so that the continuous conveying of the inert gas is realized and is not affected by the rotation of the stirring rod 25. The design of the airflow channel 213 can effectively avoid the obstruction of the gas flow when the stirring rod 25 rotates, and at the same time, the uniform distribution of the gas in the sublimation process is ensured, and the uneven reaction caused by the poor local gas flow is prevented.

[0040] In the embodiment, the stirring head 210 includes a sleeve ring 2104, a protective cover 2106, a support rod 2103, an extension rod 2102 and a plurality of spiral blades 2101; the lower end of the protective cover 2106 is provided with an opening; the sleeve ring 2104 is arranged in the protective cover 2106, and the axis of the sleeve ring 2104 coincides with the axis of the protective cover 2106; the support rod 2103 is arranged between the sleeve ring 2104 and the protective cover 2106, and one end of the support rod 2103 is fixedly connected with the outer side of the sleeve ring 2104, and the other end of the support rod 2103 is fixedly connected with the inner side of the protective cover 2106; the sleeve ring 2104 is fixed on the top of the stirring rod 25, and the air outlet is located in the inner part of the protective cover 2106; the extension rod 2102 is fixed on the top of the protective cover 2106; the spiral blades 2101 are fixed on the outer part of the extension rod 2102; and the plurality of spiral blades 2101 are arranged in a circumferential array with the axis of the extension rod 2102 as the center. The design of the stirring head 210 helps to improve the distribution effect of the sublimation gas, ensures that the gas can be uniformly distributed on the solid raw material, and further improves the sublimation efficiency, and at the same time, the protective cover 2106 can effectively prevent the solid raw material from entering the air outlet, prevent the airflow channel 213 from being blocked, and ensure smooth airflow.

[0041] In the embodiment, the bottom part of the protective cover 2106 is provided with a plurality of air holes 2105; and the plurality of air holes 2105 are arranged in a circumferential array with the axis of the extension rod 2102 as the center. When the solid raw material accumulated in the quartz cylinder 29 is too much, the opening at the lower end of the protective cover 2106 is blocked, which affects the conveying of the inert gas. The air holes 2105 are arranged to prevent the flow channel of the inert gas from being blocked, to ensure that the gas can flow smoothly during the entire sublimation reaction process, and to avoid the decrease of the sublimation efficiency caused by the decrease of the gas flow.

[0042] In the embodiment, the pressure gauges are installed on the air inlet pipe 24 and the air outlet pipe 22. The installation of the pressure gauges can monitor the flow state of the gas in real time, ensure that the pressure of the air inlet pipe and the air outlet pipe 22 is within the normal range, and if the pressure is abnormal, the system operation state is adjusted in time to ensure the stability of the sublimation process.

[0043] In this embodiment, the feeding pipe 28 is arranged on the barrel 27, and an electromagnetic control gate is installed on the feeding pipe 28. The arrangement of the electromagnetic control gate can accurately control the feeding amount of the solid raw material, and realize precise feeding.

[0044] Working principle

[0045] The solid sublimation device heats the solid raw material through the heating furnace 1, sublimates the solid raw material into gas with the aid of inert gas, and then discharges the sublimation product through the gas conveying system. Its working principle can be divided into the following steps:

[0046] Heating stage:

[0047] The heating furnace 1 is the core part of the device, and the heating element (such as an electric heating tube or other heating methods) in the heating furnace 1 provides high temperature. The temperature is sufficient to heat the solid raw material to its sublimation point, so that it undergoes phase change. The heating furnace 1 is controlled by the control panel, and the heating temperature, time and other parameters can be adjusted to meet the needs of different solid raw materials.

[0048] Sublimation reaction:

[0049] The solid raw material is continuously fed into the quartz tube 23 through the feeder (feeding screw 212, material guide pipe 211, etc.). In the quartz tube 23, the solid raw material is in full contact with the heated gas flow, and after the temperature rises to the sublimation temperature of the solid raw material, the solid raw material begins to sublimate into gas.

[0050] Gas conveying:

[0051] The gas produced by sublimation enters the quartz cylinder 29 with the aid of inert gas in the gas inlet pipe 24, and the inert gas is taken out of the quartz cylinder 29 together with the sublimation product and discharged through the gas outlet pipe 22. In order to ensure the smooth flow of sublimation gas, the stirring system stirs the solid raw material uniformly in the quartz cylinder 29, prevents the accumulation and blockage of the raw material, and improves the sublimation efficiency.

[0052] Stirring and gas flow channel 213:

[0053] After the stirring motor 26 is started, the stirring rod 25 drives the stirring head 210 to rotate, ensuring that the solid raw material in the quartz cylinder 29 can be uniformly heated, and accelerating the sublimation process. The stirring rod 25 is provided with a gas flow channel 213, so that the inert gas is not affected by the stirring motion and can continuously and stably enter the quartz cylinder 29, ensuring the continuous progress of the sublimation reaction.

[0054] Gas flow and protection:

[0055] During sublimation, gas enters the quartz tube 29 through the protective cover 2106 with gas holes 2105. The protective cover 2106 prevents solid raw materials from entering the gas flow channel 213, blocking the flow of sublimation gas. The design of the gas holes 2105 ensures that even if there is a large amount of solid raw materials accumulated in the quartz tube 29, the gas flow channel 213 remains unobstructed.

[0056] Continuous feeding:

[0057] The feeding screw 212 in the feeder continuously feeds solid raw materials into the quartz tube 29, ensuring that the sublimation process can continue. The feeding screw 212 is driven by the feeding motor 21, and by adjusting the feeding rate, the input amount of solid raw materials can be controlled to ensure the stability of the sublimation reaction.

[0058] Gas and sublimation product discharge:

[0059] After the sublimation process is completed, the sublimation product is discharged through the gas outlet pipe 22. A pressure gauge is installed in the gas outlet pipe 22 to monitor the discharge pressure of the gas in real time, ensuring that the gas is discharged smoothly and there is no blockage or excessive pressure.

[0060] Method of use

[0061] Installation and preparation:

[0062] Ensure that the heating furnace 1 and the solid sublimation unit 2 are installed firmly, and all pipes, gas channels, feeding systems, etc. are connected correctly.

[0063] Check the gas inlet pipe 24 and the gas outlet pipe 22 to ensure that there is no blockage. Check whether the pressure gauge is within the normal working range.

[0064] Add the required solid raw materials to the feeder, ensuring that the raw materials in the barrel 27 are sufficient and meet the process requirements.

[0065] Start the device:

[0066] Turn on the heating furnace 1, adjust the temperature and time parameters, and set the appropriate sublimation temperature.

[0067] Start the feeding motor 21 and adjust the rotation rate of the feeding screw 212 to make the solid raw materials enter the quartz tube 29 through the guide pipe 211.

[0068] Start the stirring motor 26 to ensure that the stirring rod 25 and the stirring head 210 can uniformly stir the solid raw materials in the quartz tube 29, avoiding material accumulation.

[0069] Operation adjustment:

[0070] During the operation of the device, monitor the temperature, pressure, etc. on the control panel to ensure the stability of the sublimation temperature and gas flow.

[0071] If necessary, adjust the flow of inert gas in the intake pipe 24 to ensure uniform distribution of sublimation gas in the quartz tube 29.

[0072] During sublimation, if there is a material blockage or air flow obstruction, it can be resolved by checking the air holes 2105 of the protective cover 2106 and the rotation of the stirring head 210.

[0073] Sublimation completion and discharge:

[0074] When the sublimation reaction is complete, stop the feeder and the stirring motor 26, and turn off the heating furnace 1.

[0075] The sublimation product in the discharge system is discharged through the gas outlet pipe 22, and the effect of sublimation and the purity of the product can be judged by analyzing the quality of the discharged gas.

[0076] Cleaning and maintenance:

[0077] After the equipment is used, it needs to be cleaned to ensure that there is no residual material in the quartz tube 23, the feeding system and other components.

[0078] Regularly check the normal operation of the air flow channel 213, the air holes 2105 and the pressure gauge and other components to ensure that the device is in the best working condition.

[0079] Through the above steps, it can be ensured that the device can safely and stably carry out the solid sublimation reaction during operation, and achieve the desired sublimation effect and product purity.

Claims

1. A solid sublimation device capable of continuous feeding, comprising a heating furnace (1) and a solid sublimation unit (2), wherein the solid sublimation unit (2) is mounted on the heating furnace (1), characterized in that: The solid sublimation unit (2) comprises: A quartz tube (23) is fixedly mounted on the heating furnace (1), with an air inlet pipe (24) provided at the bottom and an air outlet pipe (22) provided at the top; A quartz cylinder (29) is fixed inside the quartz tube (23) and has an opening at the top; A stirring motor (26) is fixed on the heating furnace (1); A stirring rod (25) having one end drivingly connected to the output shaft of the stirring motor (26) and the other end extending into the interior of the quartz cylinder (29); A stirring head (210) is placed in the quartz cylinder (29) and connected to the stirring rod (25); The feeder comprises a barrel (27), a feeding motor (21), a guide tube (211), and a feeding screw rod (212); the barrel (27) is fixed on the top of a quartz tube (23); the guide tube (211) is placed in the quartz tube (23), the lower end of the guide tube extends into the quartz tube (29), and the upper end is communicated with the barrel (27); the feeding motor (21) is fixed on the barrel (27); the lower end of the feeding screw rod (212) is rotatably inserted into the feeding tube, and the upper end passes through the barrel (27) and is transmission-connected to the output shaft of the feeding motor (21).

2. The solid sublimation device capable of continuous feeding according to claim 1, characterized in that: The stirring rod (25) is provided with an air flow channel (213) inside, an air outlet is provided on the top, and an air inlet (214) is provided on the side. The air outlet and the air inlet (214) are respectively communicated with the air flow channel (213).

3. The solid sublimation device capable of continuous feeding according to claim 2, characterized in that: The stirring head (210) comprises a collar (2104), a protective cover (2106), a support rod (2103), an extension rod (2102) and a plurality of spiral blades (2101); an opening is provided at the lower end of the protective cover (2106); the collar (2104) is placed in the protective cover (2106), and the axis of the collar (2104) coincides with the axis of the protective cover (2106); the support rod (2103) is placed between the collar (2104) and the protective cover (2106), and one end of the support rod is connected to the collar. The outer side surface of (2104) is fixedly connected, and the other end is fixedly connected to the inner side surface of the protective cover (2106); the ring (2104) is fixed on the top of the stirring rod (25), and the air outlet is located inside the protective cover (2106); the extension rod (2102) is fixed on the top of the protective cover (2106); the spiral blade (2101) is fixed on the outside of the extension rod (2102); and the multiple spiral blades (2101) are distributed in a circular array with the axis of the extension rod (2102) as the center.

4. The solid sublimation device capable of continuous feeding according to claim 3, characterized in that: The bottom of the protective cover (2106) is provided with a plurality of air holes (2105); the plurality of air holes (2105) are distributed in a circular array with the axis of the extension rod (2102) as the center.

5. The solid sublimation device capable of continuous feeding according to any one of claims 1 to 4, characterized in that: Pressure gauges are installed on the air inlet pipe (24) and the air outlet pipe (22).

6. The solid sublimation device capable of continuous feeding according to claim 1, characterized in that: The barrel (27) is provided with a feeding pipe (28).

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