阅读说明：本技术 一种用于烟草水分吸附脱附性能检测的自动称重装置 (Automatic weighing device for detecting tobacco moisture adsorption and desorption performance ) 是由 孙淼 李斌 李志刚 黄锋 张龙 张明建 吴浩 张柯 计敏 刘勇 于 2019-12-13 设计创作，主要内容包括：一种用于烟草水分吸附脱附性能检测的自动称重装置,包括设置在吸附脱附室中的样品放置单元以及用于检测样品重量的称重单元,其特征在于：样品放置单元包括设有多个样品槽的旋转盘及旋转盘驱动机构,驱动机构包括旋转电机和升降气缸,旋转电机固定于升降气缸的滑块上,且可在升降气缸作用下做上下往复运动,旋转电机的旋转轴与旋转盘固定连接,旋转电机上设有编码盘,称重单元包括设置在质量检测模块保护室中的质量检测模块及设置在吸附脱附室内的位于样品盘正下方的称重托盘。本发明的优点在于：自动化程度高,减少人为干涉,提高实验准确性；可实现多样品、自定义采集频率下(6～30秒/样品)的实时数据检测和自动记录,提高了检测效率。(The utility model provides an automatic weighing device for tobacco moisture adsorbs desorption performance detects, places the unit and is used for detecting the weighing unit of sample weight including setting up the sample in adsorbing desorption room, its characterized in that: the sample placing unit comprises a rotating disk and a rotating disk driving mechanism, wherein the rotating disk and the rotating disk driving mechanism are provided with a plurality of sample grooves, the driving mechanism comprises a rotating motor and a lifting cylinder, the rotating motor is fixed on a sliding block of the lifting cylinder and can do up-and-down reciprocating motion under the action of the lifting cylinder, a rotating shaft of the rotating motor is fixedly connected with the rotating disk, a coding disk is arranged on the rotating motor, and the weighing unit comprises a quality detection module arranged in a quality detection module protection chamber and a weighing tray arranged in an adsorption and desorption chamber and positioned under the sample disk. The invention has the advantages that: the automation degree is high, the human interference is reduced, and the experimental accuracy is improved; the real-time data detection and automatic recording under the multi-sample and custom collection frequency (6-30 seconds per sample) can be realized, and the detection efficiency is improved.)

1. The utility model provides an automatic weighing device for tobacco moisture adsorbs desorption performance detects, places the unit and is used for detecting the weighing unit of sample weight including setting up the sample in adsorbing desorption room, its characterized in that: the sample placing unit comprises a rotating disk and a rotating disk driving mechanism, wherein the rotating disk is provided with a plurality of sample slots for placing a sample disk, the rotating disk driving mechanism is arranged outside the adsorption and desorption chamber, the sample slots are arranged along the circumference of the rotating disk, the driving mechanism comprises a rotating motor and a lifting cylinder arranged below the rotating motor, and the rotating motor is fixed on the lifting cylinderSliding blockAnd the upper and lower positions of the rotary motor are controlled by a limit baffle fixed on the slide block and an upper and lower limit switch, and a rotary shaft of the rotary motorIs fixedly connected with the rotating disk and is provided with a rotating motorCoding disc(ii) a The weighing unit comprises a quality detection module arranged in a quality detection module protection chamber and a weighing tray arranged in an adsorption and desorption chamber and located under a sample tray, the quality detection module protection chamber is located below the adsorption and desorption chamber, the weighing tray is connected with the quality detection module through a tray supporting rod to realize detection of the quality of the sample, a protection air pipe is sleeved on the tray supporting rod, the upper end and the lower end of the protection air pipe are respectively communicated with the adsorption and desorption chamber and the quality detection module protection chamber and are sealed with the outside, and the adsorption and desorption chamber and the quality detection module protection chamber are protected from being isolated from the outside air.

2. The automatic weighing device for detecting the tobacco moisture adsorption and desorption performance according to claim 1, characterized in that: the protective gas pipe is provided with a gas outlet for discharging the treatment gas leaked from the adsorption and desorption chamber and the protective gas leaked from the protective chamber of the quality detection module.

3. The automatic weighing device for detecting the tobacco moisture adsorption and desorption performance according to claim 1, characterized in that: the motor rotating shaft is positioned outside the adsorption and desorption chamber and is sleeved with a rotating shaft outer pipe, so that the adsorption and desorption chamber is not influenced by the external environment.

4. The automatic weighing device for detecting the tobacco moisture adsorption and desorption performance according to claim 1, characterized in that: the quality detection module is a high-precision weighing sensor.

5. The automatic weighing device for detecting the tobacco moisture adsorption and desorption performance according to claim 1, characterized in that: the upper limit switch and the lower limit switch are arranged on the cylinder body of the cylinder.

6. The automatic weighing device for detecting the tobacco moisture adsorption and desorption performance according to claim 1, characterized in that: and a temperature sensor is arranged in the quality detection module protection chamber.

Technical Field

The invention relates to an automatic weighing device, in particular to an automatic weighing device for detecting the adsorption and desorption performance of tobacco moisture.

Background

The tobacco flakes or the tobacco shreds are porous media composed of complex organic substances, the pore structures of the tobacco flakes or the tobacco shreds are possibly changed in the heat and humidity treatment in the tobacco processing process, and the physical and chemical properties of the surfaces of the tobacco flakes or the tobacco shreds are changed by adding some external feed liquid in the processing process, so that the capacity of absorbing and removing moisture of the moisture in processed tobacco flakes or tobacco shreds under certain temperature and humidity conditions is changed to a certain extent. When the isothermal adsorption and desorption capacity and the change rule of the processed sheet tobacco or tobacco shred sample on the moisture are evaluated, a plurality of continuous heat and mass transfer processes are usually included, and the moisture adsorption and desorption capacity of the sample can be effectively detected and evaluated only by carrying out dynamic online detection on the processes. The evaluation shows that the sheet tobacco or the cut tobacco has the advantages of moisture adsorption and desorption performance, physical moisture retention effect of the added moisture retention agent, optimal storage condition, high-temperature baking and moisture regaining performance and the like.

The inventor of the present invention has applied for an invention patent with patent number 201510307227.5, which is named as a detection device for isothermal adsorption and desorption of moisture in sheet tobacco or cut tobacco biomass, and the principle is that the moisture content of the processing atmosphere is changed by adjusting the flow ratio of dry air and wet air; meanwhile, the temperatures of the gas mixing unit and the adsorption and desorption unit are respectively controlled by utilizing the independent heat sources, so that the treatment atmosphere reaches the preset temperature and humidity before entering the adsorption and desorption unit to act on the sample, the weight of the sample is collected in real time through a high-precision balance, and the adsorption and desorption test of the biomass material in a high-temperature environment is realized. However, the device has the defect that the detection efficiency is low due to the adoption of single sample detection in test application.

Disclosure of Invention

The invention aims to provide the automatic weighing device for detecting the tobacco moisture adsorption and desorption performance aiming at the prior art, the automatic weighing device can realize sequential cyclic weighing and data recording of multiple samples with custom frequency (6-30 seconds per sample), and the detection efficiency is improved.

The purpose of the invention is realized by the following technical scheme:

the utility model provides an automatic weighing device for tobacco moisture adsorbs desorption properties detects, places the unit and is used for detecting the weighing unit of sample weight including setting up the sample in adsorbing desorption room, wherein: the sample placing unit comprises a rotating disk provided with a plurality of sample grooves for placing a sample disk and a rotating disk driving mechanism arranged outside the adsorption and desorption chamber, the plurality of sample grooves are arranged along the circumference of the rotating disk, the driving mechanism comprises a rotating motor and a lifting cylinder arranged below the rotating motor, the rotating motor is fixed on a sliding block of the lifting cylinder and can reciprocate up and down under the action of the lifting cylinder, the up-down position of the lifting of the rotating motor is controlled by a limit baffle fixed on the sliding block and an up-down limit switch, a rotating shaft of the rotating motor is fixedly connected with the rotating disk, and the rotating motor is provided with an encoding disk; the weighing unit comprises a quality detection module arranged in a quality detection module protection chamber and a weighing tray arranged in an adsorption and desorption chamber and located under a sample tray, the quality detection module protection chamber is located below the adsorption and desorption chamber, the weighing tray is connected with the quality detection module through a tray supporting rod to realize detection of the quality of the sample, a protection air pipe is sleeved on the tray supporting rod, the upper end and the lower end of the protection air pipe are respectively communicated with the adsorption and desorption chamber and the quality detection module protection chamber and are sealed with the outside, and the adsorption and desorption chamber and the quality detection module protection chamber are protected from being isolated from the outside air.

The motor rotating shaft is positioned outside the adsorption and desorption chamber and is sleeved with a rotating shaft outer pipe, so that the adsorption and desorption chamber is not influenced by the external environment.

The quality detection module is a high-precision weighing sensor.

And a temperature sensor is arranged in the quality detection module protection chamber.

The rotary disc type gas-liquid separation device comprises a rotary disc, a sample disc, an adsorption desorption chamber, a rotary shaft outer tube, a cylinder bracket, an upper limit switch, a limit baffle, a lower limit switch, a rotary motor, a coding disc, a lifting cylinder, a weighing tray, a tray support rod, a gas outlet, a protective gas tube, a quality detection module protective chamber, a quality detection module, a temperature sensor and a protective gas inlet, wherein the rotary disc is provided with a plurality of sample grooves for placing the sample disc and is positioned in the adsorption desorption chamber, and the rotary disc is fixedly connected with the rotary shaft of the rotary motor; be equipped with the coding dish on the rotating electrical machines, be used for guaranteeing to rotate the motor and rotate the sample dish at every turn and all be located directly over the tray of weighing, the rotating electrical machines is fixed in on the slider of lift cylinder, can be up-and-down reciprocating motion under the effect of lift cylinder, drive rotary disk and sample dish simultaneously and make elevating movement, the upper and lower position that the rotating electrical machines goes up and down is detected by fixing the limit baffle on the slider and fixing the upper and lower limit switch on the cylinder body, the lift cylinder is fixed on the cylinder support, the cylinder support passes through the rotation axis outer tube and is connected fixedly with the absorption desorption room, and be equipped with the sealing washer at rotation axis and rotation axis outer tube. The weighing tray is positioned under the sample tray and acts on the quality detection module through the tray supporting rod to realize the detection of the sample quality; the quality detection module is arranged in the quality detection module protection chamber, the quality detection module is not influenced by the temperature and the humidity in the adsorption desorption chamber for protection, a shielding gas inlet and a temperature sensor are arranged on the quality detection module protection chamber, the shielding gas inlet is used for introducing shielding gas with a certain flow velocity, the temperature in the quality detection module protection chamber is enabled to be within the allowable use range of the quality detection module, the temperature sensor is used for detecting the temperature in the quality detection module protection chamber, the quality detection module protection chamber is communicated with the adsorption desorption chamber through a protection gas pipe, the protection gas pipe is arranged on the protection gas pipe, the lower end of the protection pipe is respectively communicated with the adsorption desorption chamber and the quality detection module protection chamber and sealed with the outside, and the adsorption desorption chamber and the quality detection module protection chamber. The protective gas pipe is provided with a gas outlet for discharging the treatment gas leaked from the adsorption and desorption chamber and the protective gas leaked from the protective chamber of the quality detection module.

The automatic weighing process can be described as: the starting device, the lifting cylinder drives the slide block and the rotating motor to push the rotating shaft, the rotating disk and the sample disk to move upwards, when the sample disk moves to the upper limit switch from the limit baffle, the upward movement stops, at the moment, the rotating motor drives the rotating disk and the sample disk to rotate through the rotating shaft, under the action of the encoding disc, when a certain sample disc is positioned right above the weighing tray, the rotation movement stops to realize accurate positioning, at the moment, the lifting cylinder drives the sliding block and the rotating motor to push the rotating shaft, the rotating disk and the sample disk to move downwards, the sample disk positioned right above the weighing tray can be gradually separated from the rotating disk until the sample disk is completely separated, the sample disk continuously moves to the limit baffle plate to the lower limit switch, the downward movement is stopped, at the moment, the weight of the sample disk completely acts on the weighing tray, and the sample is transmitted to the quality detection module through the tray supporting rod, and after the sample is completely stable, the detection of the quality of the sample in the sample tray and the data acquisition are completed. Then, the lifting cylinder drives the sliding block and the rotating motor to move upwards, meanwhile, the rotating shaft, the rotating disk and the other sample disks are driven to move upwards, the sample disks with finished quality detection are driven to move upwards in the moving process, and when the sample disks move to the upper limit switch through the limit baffle, the upward movement stops. At the moment, the sample disc is completely separated from the weighing tray, the rotating motor starts to rotate, the rotating disc and the sample disc are driven by the rotating shaft to rotate simultaneously, the rotating disc and the sample disc stop rotating when rotating to the position right above the weighing tray by the aid of the encoding disc, the air lifting cylinder drives the sliding block and the rotating motor to start to move downwards, and the process is repeated, so that sequential detection of the mass of multiple samples can be completed. And real-time data recording under multi-sample and self-defined acquisition frequency is realized.

The invention has the following advantages;

the quality detection module is separated from the weighing tray, the quality detection module is additionally provided with a gas protection circuit, the stability of the quality detection module is not influenced in a high-temperature and high-humidity (the temperature is 5-90 ℃ and the relative humidity is 5-95% RH) test environment, and the quality detection module is protected.

Tray branch adopts the heat-insulating material to make, has completely cut off the heat transfer who adsorbs the desorption room and to the quality testing module, protects quality testing module, guarantees quality testing module stability. The device has high automation degree, reduces human interference and improves the accuracy of the experiment;

the device can realize real-time data detection and automatic recording under multi-sample and user-defined collection frequency (6-30 seconds per sample), and improves the detection efficiency.

Drawings

FIG. 1 is a block diagram of an automatic weighing apparatus of the present invention;

1. the device comprises a rotating disk, 2, a sample disk, 3, an adsorption and desorption chamber, 4, a rotating shaft, 5, a rotating shaft outer tube, 6, a cylinder support, 7, an upper limit switch, 8, a limit baffle, 9, a lower limit switch, 10, a rotating motor, 11, a coding disk, 12, a lifting cylinder, 13, a weighing tray, 14, a tray support rod, 15, an air outlet, 16, a protective air tube, 17, a quality detection module protective chamber, 18, a quality detection module, 19, a temperature sensor, 20, a protective air inlet, 21 and a sliding block.

Fig. 2 is a graph of experimental result data.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person skilled in the art based on the embodiments of the present invention belong to the protection scope of the present invention without creative efforts. Meanwhile, on the basis of the principle of the testing method, a plurality of identical testing units can be added, so that the testing efficiency of the method is further improved, a necessary automatic structure is added, and the automation degree of measurement is improved, and the method belongs to the protection scope of the invention.

As shown in figure 1, the automatic weighing device for detecting the tobacco moisture adsorption and desorption performance comprises a sample placing unit arranged in an adsorption and desorption chamber and a weighing unit for detecting the weight of a sample, wherein: the sample placing unit comprises a rotating disk 1 provided with a plurality of sample grooves for placing a sample disk 2 and a rotating disk driving mechanism arranged outside an adsorption and desorption chamber, the sample grooves are arranged along the circumference of the rotating disk, the driving mechanism comprises a rotating motor 10 and a lifting cylinder 12 arranged below the rotating motor, the rotating motor 12 is fixed on a slide block 21 of the lifting cylinder and can reciprocate up and down under the action of the lifting cylinder, the up-and-down position of the lifting of the rotating motor 10 is controlled by a limit baffle 8 fixed on the slide block and upper and lower limit switches (7 and 9) arranged on a cylinder body of the cylinder, a rotating shaft 5 of the rotating motor 10 is fixedly connected with the rotating disk 1, and an encoding disk 11 is arranged on the rotating motor; the weighing unit is including setting up the quality detection module in quality detection module protection room 17 and setting up the tray 13 of weighing under adsorbing the indoor sample dish that is located of desorption, quality detection module protection room 17 is located adsorbs desorption room 3 below, tray 13 of weighing is connected the detection that realizes the sample quality through tray branch 14 and quality detection module 18, and the cover is equipped with protection trachea 16 on tray branch 14, on the protection trachea, the lower extreme is linked together and is sealed with the external world with adsorbing desorption room 3 and quality detection module protection room 17 respectively, guarantee to adsorb desorption room 3 and quality detection module protection room 17 and outside air isolation.

The invention is more specifically composed of a rotary table 1, a sample disc 2, an adsorption and desorption chamber 3, a rotary shaft 4, a rotary shaft outer tube 5, a cylinder bracket 6, an upper limit switch 7, a limit baffle 8, a lower limit switch 9, a rotary motor 10, an encoding disc 11, a lifting cylinder 12, a weighing tray 13, a tray support rod 14, an air outlet 15, a protective air tube 16, a quality detection module protective chamber 17, a quality detection module 18, a temperature sensor 19, a protective air inlet 20, a slide block 21 and the like. The rotary disc 1 is provided with a plurality of sample slots for placing sample discs 2 and is positioned in the adsorption and desorption chamber 3, and the rotary disc 1 is fixedly connected with a rotating shaft 4 of a rotary motor 10; the rotary motor 10 is provided with an encoding disk 11 for ensuring that the sample disk 2 is positioned right above the weighing tray 13 when the rotary motor 10 rotates, the rotary motor 10 is fixed on a slide block 21 of a lifting cylinder 12 and can reciprocate up and down under the action of the lifting cylinder 12 and simultaneously drive the rotary disk 1 and the sample disk 2 to move up and down, the up and down positions of the lifting of the rotary motor 10 are detected by a limit baffle 8 fixed on the slide block 21 and upper and lower limit switches 7 and 9 fixed on a cylinder body, the lifting cylinder 12 is fixed on a cylinder support 6, the cylinder support 6 is fixedly connected with the adsorption desorption chamber 3 through a rotary shaft outer tube 5, a sealing ring is arranged between the rotary shaft 4 and the rotary shaft outer tube 5, and the adsorption desorption chamber 3 is protected from outside air. The weighing tray 13 is positioned under the sample tray 2 and acts on the quality detection module 18 through the tray supporting rod 14 to realize the detection of the sample quality; in quality detection module protection room 17 was arranged in to quality detection module 18, for protection quality detection module 18 does not receive the temperature and humidity influence in the adsorption desorption room 3, be equipped with protection gas air inlet 20 and temperature sensor 19 on the quality detection module protection room 17, protection gas air inlet 20 is used for letting in certain velocity of flow protection gas, makes the temperature in the quality detection module protection room 17 in the quality detection module 18 allows application range, and temperature sensor 19 is used for detecting the temperature in the quality detection module protection room 17, and quality detection module protection room 17 passes through protection trachea 16 and adsorbs desorption room 3 intercommunication, and protection trachea 16 upper and lower extreme is linked together and is kept apart with external seal with quality detection module protection room 17 and adsorption desorption room 3 respectively promptly, and protection adsorption desorption room 3 and quality detection module protection room 17 keep apart with the outside air. And the protective gas pipe 16 is provided with a gas outlet 15 for discharging the treatment atmosphere in the adsorption and desorption chamber 3 and the protective gas in the quality detection module protective chamber 17.

The tray support bars 14 are made of a thermally insulating material.

The lifting mechanism of the scheme is a lifting cylinder 12, and an electric cylinder, an electric sliding table and the like can also be adopted.

The working process of the invention patent is described in detail by combining the implementation case: starting the device, the lifting cylinder 12 drives the sliding block and the rotating motor 10 to push the rotating shaft 4, the rotating disk 1 and the sample disk 2 to move upwards, when the sample disk 2 moves to the upper limit switch 7 from the limit baffle 8, the upward movement stops, at the moment, the rotating motor 10 drives the rotating disk 1 and the sample disk 2 to rotate through the rotating shaft 4, under the action of the encoding disk 11, the rotating motion stops when a certain sample disk 2 is positioned right above the weighing tray 13, at the moment, the lifting cylinder 12 drives the sliding block and the rotating motor 10 to push the rotating shaft 4, the rotating disk 1 and the sample disk 2 to move downwards, the sample disk 2 positioned right above the weighing tray 13 can be gradually separated from the rotating disk 1 until the sample disk is completely separated, when the sample disk continues to move to the lower limit switch 9, the downward movement stops, at the moment, the weight of the sample disk 2 completely acts on the weighing tray 13 and is transmitted to the quality detection module 18, after the sample is completely stabilized, the detection of the quality of the sample in the sample disc 2 is completed, then the lifting cylinder 12 drives the sliding block and the rotating motor 10 to move upwards, and simultaneously drives the rotating shaft 4, the rotating disc 1 and the rest of the sample discs 2 to move upwards, and in the moving process, the sample discs 2 with the completed quality detection are driven to move upwards, and when the sample discs move to the upper limit switch 7 through the limit baffle 8, the upward movement is stopped. At this moment, the sample plate 2 and the weighing tray 13 are completely separated, the rotating motor 10 starts to rotate, the rotating disc 1 and the sample plate 2 are driven by the rotating shaft 4 to rotate simultaneously, the rotating disc stops rotating when the sample plate 2 rotates to a position right above the weighing tray 13 under the action of the encoding disc 11, the air lifting cylinder 12 drives the sliding block and the rotating motor to start to move downwards, and the process is repeated, so that the sequential detection of the mass of multiple samples can be completed.

No sample test experiment: as shown in table 1, experimental parameters such as temperature, humidity, stabilization time, shield gas flow rate, treatment atmosphere flow rate, and sampling period at each experimental stage were set. And (5) carrying out an experiment, and recording and storing each experiment parameter in real time in the experiment process. The results of the experiment are shown in fig. 2, the sample plate quality remained stable under the high temperature and high humidity test conditions of 90% RH at 70 c relative humidity with no change in the readings.

TABLE 1 Experimental parameters for each stage set for blank samples

Phases	Temperature/. degree.C	PID temperature/. degree.C	Humidity/% RH	Flow rate of mixed gas/ml/min	Steady value/min
						1	70	75	0	4800	30
2	70	75	20	4800	30
						3	70	75	40	4800	30
4	70	75	60	4800	30
						5	70	75	80	4800	30
6	70	75	90	4800	30
						7	70	75	80	4800	30
8	70	75	60	4800	30
						9	70	75	40	4800	30
10	70	75	20	4800	30
						11	70	75	0	4800	30