CN211323028U - Heat pump type test curing barn - Google Patents

Abstract

The utility model discloses a heat pump type test curing barn, which comprises a tobacco loading chamber, wherein the tobacco loading chamber is of a box body structure formed by plates, a supporting beam is arranged in the tobacco loading chamber and is suitable for hanging tobacco leaves, a tobacco loading door which can be opened movably is arranged on the side surface of the tobacco loading chamber, and a heat preservation layer is arranged on the inner wall surface of the tobacco loading chamber; a vertical air duct with two open ends is arranged in the cigarette loading chamber, a heat exchanger of a heat pump unit is arranged in the vertical air duct, a compressor of the heat pump unit is arranged outside the cigarette loading chamber, and the compressor is connected with the heat exchanger through a refrigerant pipe; a circulating fan is arranged in the vertical air duct; and an image acquisition system, a tobacco leaf baking weighing device, a temperature and humidity detection device, a moisture exhaust window and a cold air door are further arranged in the tobacco containing chamber. The utility model discloses the simulation reality that exists can be solved and the environment and resources are saved can not be compromise when present tobacco flue-curing is experimental to and the problem that wastes time and energy.

Description

Heat pump type test curing barn

Technical Field

The utility model relates to a heat pump type test curing barn belongs to the experimental curing barn technical field of tobacco leaf curing.

Background

The quality and style characteristics of the tobacco leaves are gradually formed in the growing and developing process of the tobacco leaves, and the curing technology is embodied, so that the primary purpose of the tobacco leaf curing is to expose and exert the quality advantages of the tobacco leaves formed and accumulated in the agricultural process to the maximum extent. In the tobacco baking process, the real-time tracking and monitoring of the tobacco baking state in the baking chamber have important influence on the baking effect of tobacco leaves, and timely adjustment can be made on the environment in the baking chamber through monitoring so as to improve the quality of flue-cured tobacco.

Currently, a tobacco leaf baking test is mainly completed in the existing baking room, after the tobacco leaves are harvested, testers need to weave tobacco leaves into rods, then hang the tobacco hanging rods in a tobacco loading room, finally fire and bake the tobacco leaves, collect appearance images, weight and other parameters of the tobacco leaves in the baking process, and finally realize the regulation and control of the tobacco baking process according to the parameters. However, because the tobacco loading chamber of the curing barn is large, the following problems can exist when the existing curing barn is adopted for testing, firstly, the tobacco loading chamber has large space, if the tobacco loading is less, the curing environment cannot be truly simulated, and if the tobacco loading is more, the tobacco leaf waste can exist; secondly, each time the tester needs to go to the fixed curing barn for test operation, the problem of time and labor waste exists.

In addition, at present, for the acquisition of the baking image of the tobacco leaves, a camera is usually installed in a tobacco loading chamber of a baking room, and the appearance image of the baked tobacco leaves is acquired through the camera. Through the mass production practice of the applicant, the fact that the camera installed in the tobacco containing chamber can not clearly acquire the pictures of the baked tobacco leaves is found, the main reason is that in the tobacco leaf baking process, the temperature in the tobacco containing chamber changes in real time along with the baking process, and the humidity in the tobacco containing chamber is high, so that the camera can not clearly shoot due to the fact that atomized moisture adheres to the camera, and no effective means is provided for solving the problems at present.

For measurement of the flue-cured tobacco leaves, two hanging rings and a tension sensor are combined to form a hanging ring type weighing electronic scale, the hanging ring above the weighing electronic scale is hung on a tobacco hanging rod during weighing, the hanging ring below the weighing electronic scale is used for hanging the tobacco leaves, and the weight of the flue-cured tobacco leaves is read through the tension sensor. The disadvantage of this method is that the weighed tobacco leaves are often scraped with other tobacco leaves during the baking weighing, thereby affecting the weighing accuracy.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the heat pump type test curing barn is provided to solve the problems that the simulation of a real curing environment and the resource saving cannot be considered in the existing tobacco curing test, and the time and the labor are wasted.

The technical scheme of the utility model is that: a heat pump type test curing barn comprises a tobacco containing chamber, wherein the tobacco containing chamber is of a box body structure formed by plates, a supporting beam is arranged in the tobacco containing chamber and is suitable for hanging tobacco leaves, a tobacco containing door capable of being opened movably is arranged on the side face of the tobacco containing chamber, and a heat insulation layer is arranged on the inner wall face of the tobacco containing chamber;

a vertical air duct with two open ends is arranged in the cigarette loading chamber, a heat exchanger of a heat pump unit is arranged in the vertical air duct, a compressor of the heat pump unit is arranged outside the cigarette loading chamber, and the compressor is connected with the heat exchanger through a refrigerant pipe;

a circulating fan is arranged in the vertical air duct and is suitable for guiding the air heated by the heat exchanger into the tobacco containing chamber from the first end of the vertical air duct, and the air enters the vertical air duct again from the second end of the vertical air duct for circulation after the tobacco leaves are heated in the tobacco containing chamber;

and an image acquisition system, a tobacco leaf baking weighing device, a temperature and humidity detection device, a moisture exhaust window and a cold air door are further arranged in the tobacco containing chamber.

Preferably, an electric heating auxiliary mechanism is arranged in the vertical air duct and is suitable for heating the air in the vertical air duct when the heat supply of the heat pump is insufficient.

Preferably, the image acquisition system includes:

the shooting box body comprises an installation cavity body, a shooting opening, an air inlet and an air outlet are arranged on the shooting box body, the shooting opening faces to the flue-cured tobacco leaves in the tobacco loading chamber of the curing barn, and the air inlet and the air outlet are communicated with the environment outside the tobacco loading chamber of the curing barn;

the fan is arranged at the air inlet and is suitable for extracting air from the outside of the air inlet and conveying the air into the mounting cavity;

the camera device comprises a camera, the camera corresponds to the shooting port and is arranged in the installation cavity, and the camera can acquire images of the tobacco leaves baked in the curing barn from the shooting port;

the shielding door is movably arranged on the shooting box body;

the driving source is arranged on the shooting box body and can drive the shielding door to act between the closing and the opening of the shooting opening.

Preferably, a first air filter is installed at the air inlet, a second air filter is installed at the air outlet, the fan is a high-pressure axial flow fan, and the high-pressure axial flow fan is installed at the inner side end of the first air filter.

Preferably, a pair of slide rails is arranged in the installation cavity, and two ends of the shielding door are installed on the slide rails in a matched manner.

Preferably, the driving device is an air cylinder, a base of the air cylinder is fixed in the installation cavity, a free end of a telescopic rod of the air cylinder is connected with the shielding door, and the air cylinder drives the shielding door to move on the sliding rail.

Preferably, the image acquisition system is embedded in the wall of the smoking room, and the air inlet and the air outlet are located outside the wall of the smoking room.

Preferably, the flue-cured tobacco leaf weighing device comprises:

the two weighing sensors are respectively arranged on the two adjacent supporting beams;

the two ends of the supporting bracket are respectively arranged on the two weighing sensors, and the supporting bracket is suitable for hanging the baked tobacco leaves to be weighed;

the first isolation net is movably hung on the two support beams so as to isolate the flue-cured tobacco leaves hung on the support bracket from the flue-cured tobacco leaves hung on the two support beams.

Preferably, the number of the first isolation nets is two, and the first isolation nets are respectively arranged on two sides of the support bracket; and mounting seats are arranged at the upper ends of two sides of the first isolation net, screw holes are formed in the mounting seats, screw holes are correspondingly formed in the upper end face of the supporting beam, and the mounting seats are fixed on the supporting beam by screwing fixing bolts into the two screw holes.

Preferably, the bottom surfaces of the two ends of the supporting bracket are respectively provided with a second isolation net so as to limit the baked tobacco leaves to be weighed between the two second isolation nets, a third isolation net which is horizontally placed is arranged between the two second isolation nets, and the third isolation net is suitable for stacking the baked scattered tobacco leaves.

The utility model has the advantages that: the utility model discloses a set up dress smoke-box structure with panel, be equipped with vertical wind channel between dress smoke-box, install heat pump set's heat exchanger and circulating fan in vertical wind channel, heat pump set's compressor is installed outside dress smoke-box, and the compressor passes through the refrigerant pipe with the heat exchanger and links to each other, through heat pump set to the indoor supply of dress smoke-box toasting the required heat of tobacco leaf. The device can truly simulate the baking environment of the baking room, is convenient to move and use, and can effectively solve the problems that the simulated real baking environment and the resource saving can not be considered and the time and the labor are wasted when the existing tobacco leaf baking test is carried out.

Additionally, the utility model discloses an install the camera in shooting the box to set up shooting mouth, air intake and air outlet on shooting the box, the camera correspondence sets up in shooting mouth department, installs the fan in air intake department, and the installation can be with the shielding door that the shooting mouth seals and open on shooting the box. Before shooting, start the fan earlier and make during the outside air enters into the installation cavity to discharge from air outlet department, in order to detach fog, the moisture on the camera, guarantee the definition of making a video recording. When shooting, keep fan operating condition, and make through the activity of driving source drive shield door and shoot the mouth and open, steerable camera shoots the collection fast this moment and toasts the tobacco leaf image, the air that gets into from the air intake at this in-process is discharged through air outlet and shield door respectively, and prevent the air in the baking house dress cigarette room from shielding door entering into the installation cavity, so can solve the high temperature in the baking house dress cigarette room, during highly humid air enters into the installation cavity, meet the camera cooling atomization, and then influence the problem of the definition that the camera was shot. After shooting, the driving source drives the shield door to move so as to close the shooting opening, and meanwhile, the working state of the fan is delayed, so that the air in the installation cavity is continuously subjected to flowing treatment, the air environment in the installation cavity can be kept consistent, the phenomenon of atomization of the surface of the camera due to air problems is avoided as much as possible, and the pretreatment time before next collection is shortened. Compared with the prior art, the utility model discloses can effectively solve because of the temperature in the dress cigarette chamber changes along with the process real-time that toasts to humidity in the dress cigarette chamber is higher and lead to the camera to be stained with atomizing moisture, and then can not clearly gather the problem of toasting the tobacco leaf image.

During weighing, the utility model weaves the tobacco leaves on the tobacco hanging rod and the supporting bracket, then hangs the tobacco hanging rod on the supporting beam, hangs the supporting bracket on the supporting beam, and installs the weighing sensor on the contact surface of the supporting bracket and the supporting beam; then, mounting first isolation nets on two sides of the supporting bracket to avoid weighing errors caused by contact and scraping of other tobacco leaves and the tobacco leaves on the supporting bracket; and finally, baking according to a baking process, reading the total weight of the support bracket from the display, and removing the weight of the original support bracket to obtain the weight of the baked tobacco leaves. Compared with the prior art, the device can separate the tobacco leaves to be weighed and baked from other tobacco leaves to be baked in a real baking environment, and avoids the problem that other tobacco leaves are scraped with the weighed tobacco leaves, so that the weighing accuracy is influenced.

Drawings

FIG. 1 is a front view of a heat pump type test baking room according to an embodiment of the present invention;

FIG. 2 is a rear view of a heat pump type test baking room according to an embodiment of the present invention;

FIG. 3 is a left side view of a heat pump type test baking room according to an embodiment of the present invention;

FIG. 4 is a schematic diagram of the interior of a heat pump type test baking room according to an embodiment of the present invention;

FIG. 5 is a schematic view of the direction A in FIG. 4;

FIG. 6 is a front view of the photographing case;

FIG. 7 is a left side view of the photographing case;

FIG. 8 is a right side view of the photographing case;

FIG. 9 is a rear view of the camera housing;

FIG. 10 is an internal view of the photographing case;

FIG. 11 is a cross-sectional view of the intake opening of the photographing box;

FIG. 12 is a front view of a weighing device for flue-cured tobacco in a curing barn according to an embodiment of the present invention;

FIG. 13 is a side view of a weighing device for flue-cured tobacco in a curing barn according to an embodiment of the present invention;

FIG. 14 is a schematic view of a first spacer screen;

FIG. 15 is a front view of the support bracket;

FIG. 16 is a side view of the support bracket;

figure 17 is a schematic view of a support carrier with cut tobacco leaves.

Description of reference numerals: 100 cigarette chambers, 120 vertical air ducts, 130 temperature and humidity detection devices, 140 light supplement lamps, 150 first observation windows, 160 moisture discharge windows, 170 cigarette accommodating doors and 180 cold air doors;

200 frame openings;

300 heat pump units, 310 refrigerant pipes, 320 heat exchangers, 330 circulating fans and 340 electric heating auxiliary mechanisms;

400, an image acquisition system, a 410 shooting box body, a 411 shooting port, a 412 air inlet, an 413 air outlet, a 414 box door, 415 a second observation window, 420 cameras, 430 a shielding door, 440 a driving source, 450 supports, 460 sliding rails, 470 a first air filter and 480 a fan;

the device comprises a 500 flue-cured tobacco leaf weighing device, a 510 weighing sensor, a 520 supporting bracket, a 521 second isolation net, a 522 third isolation net, a 530 first isolation net, a 531 mounting seat and 532 fixing bolts.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many different forms other than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention, and it is therefore not to be limited to the specific embodiments disclosed below.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Please refer to fig. 1 to 17, the embodiment of the present invention provides a heat pump type test flue-curing barn, including the tobacco loading chamber 100, the tobacco loading chamber 100 is a box structure formed by plates, a plurality of supporting beams are arranged in the tobacco loading chamber 100, the supporting beam is horizontally arranged, two ends of the supporting beam are connected to the wall of the tobacco loading chamber 100, the supporting beam is used for hanging tobacco leaves, a mobile tobacco loading door 170 is arranged on the side of the tobacco loading chamber 100, so as to facilitate the operations of loading tobacco, unloading tobacco, maintenance and the like, the tobacco leaves can be hung on the supporting beam after the tobacco loading door 170 is opened, or the baked tobacco leaves can be taken out. The wall of the cigarette containing chamber 100 is provided with a transparent first observation window 150, and the inner wall is provided with a heat insulation layer.

In one example, the test barn has a length, width and height of 3m, 1.59m and 2.35m, respectively. The plate is a double-sided heat-insulation color steel plate with the thickness of 0.5mm, and the thickness of the heat-insulation plate is 100 mm. The heat-insulating layer is made of polyurethane foaming material with the density of more than or equal to 38kg/m³The heat conductivity coefficient of the material is less than or equal to 0.03w/m.k, the use temperature is-100 to +100 ℃, and the thickness is 100 mm.

The cigarette loading chamber 100 is internally provided with a vertical air duct 120 with two open ends, the vertical air duct 120 is internally provided with a heat exchanger 320 of the heat pump unit 300, the exterior of the cigarette loading chamber 100 is provided with a compressor of the heat pump unit 300, and the compressor is connected with the heat exchanger 320 through a refrigerant pipe 310. The heat pump unit 300 is a conventional technical means in the field, and the working principle thereof is as follows: the high-pressure working medium steam discharged by the compressor flows into the heat exchanger 320, and latent heat released when the working medium steam is condensed heats the air in the vertical air duct 120; the condensed liquid working medium flows back to the evaporator to absorb heat in the external environment for evaporation, and the evaporated working medium steam is sucked by the compressor to complete the heating cycle. Through the above working process, the heat pump unit 300 introduces the air heat in the external environment into the curing barn.

In one example, a frame port 200 is disposed next to the smoke containing chamber 100, a compressor of the heat pump unit 300 is installed in the frame port 200, the frame port 200 is opened at the front and the rear, and plates are disposed on the upper and the lower sides of the frame port 200, so that the heat pump unit 300 can rapidly absorb external heat, and can prevent rainwater and the like from affecting the normal operation of the heat pump unit 300.

A circulating fan 330 is installed in the vertical air duct 120 to guide the air heated by the heat exchanger 320 from the first end of the vertical air duct 120 into the tobacco loading chamber 100, and the air enters the vertical air duct 120 again from the second end of the vertical air duct 120 for circulation after the tobacco leaves are heated in the tobacco loading chamber 100. Preferably, the circulation fan 330 is an axial fan 480.

Be equipped with electric heat complementary unit 340 in vertical wind channel 120, when the air temperature unsatisfied requirement, through the gas in the vertical wind channel 120 of electric heat complementary unit 340 heating to when the heat supply of heat pump is sufficient, only rely on the heat pump can carry out the sufficient heat supply to smoke chamber 100, and utilize electric heat complementary unit 340 to carry out the auxiliary heat supply when the heat pump heat supply is not enough, with required heat supply in the homoenergetic satisfies smoke chamber 100 under any state. Specifically, there are two starting modes for the electric heating auxiliary mechanism 340, one is that when the actual baking temperature in the baking room does not meet the requirement within the set time after the heat pump unit 300 is started, the electric heating auxiliary mechanism 340 starts heating; the other is that when the actual baking temperature in the baking room suddenly drops to the set temperature, the electric heating auxiliary mechanism 340 is started to heat together with the heat pump.

The temperature and humidity detection device 130 is installed in the tobacco loading chamber 100, specifically, the temperature and humidity detection device 130 is a temperature and humidity sensor, and is used for sensing the temperature and humidity in the tobacco loading chamber 100, and the installation mode and the function of the temperature and humidity sensor are the same as those of the temperature and humidity sensor in the existing tobacco curing barn.

A moisture removal window 160 is installed in the smoking room 100 in the same manner as the moisture removal window 160 in the conventional tobacco flue-curing house.

Install cold wind door 180 on dress smoke-box 100, when needs carry out the hydrofuge to dress smoke-box 100, steerable cold wind door 180 and hydrofuge window 160 open, and the air outside dress smoke-box 100 this moment gets into from cold wind door 180, and the circulation back is followed the hydrofuge window 160 and is discharged. Preferably, the cool air door 180 is disposed on a sidewall surface above the vertical air duct 120.

The image acquisition system 400 is installed in the tobacco loading chamber 100 and used for acquiring images of the cured tobacco leaves in the tobacco loading chamber 100 of the curing barn, so that workers can observe the appearance quality of the tobacco leaves and further regulate and control the curing process of the tobacco leaves. The image capturing system 400 includes a photographing box 410, a fan 480, a camera, a shield door 430, and a driving source 440.

The shooting box 410 comprises an installation cavity, a shooting opening 411, an air inlet 412 and an air outlet 413, the shooting opening 411 faces the interior of the flue-curing barn tobacco loading chamber 100 when the shooting box 410 is installed so as to collect flue-cured tobacco leaves, and the air inlet 412 and the air outlet 413 are communicated with the environment outside the flue-curing barn tobacco loading chamber 100.

A transparent second observation window 415 and a door 414 are further installed on the shooting box 410, wherein the transparent observation window can facilitate the observation of the inside of the installation cavity from the outside, and the door 414 can facilitate the installation and maintenance of various parts inside the shooting box 410.

In one example, the shooting box 410 is embedded in the wall of the smoking room 100, the shooting opening 411 of the shooting box faces the smoking room 100, the air inlet 412 and the air outlet 413 are arranged on two sides of the shooting box 410, the positions of the air inlet 412 and the air outlet 413 are exposed out of the wall of the smoking room 100, the door 414 is arranged on the outer vertical surface of the shooting box 410, and the second observation window 415 is arranged on the door 414.

The fan 480 is mainly used to draw air outside the smoking room 100 into the mounting cavity. Specifically, the fan 480 is installed at the intake opening 412, and in operation, the fan 480 draws air from outside the intake opening 412 and delivers the air into the installation cavity. The fan 480 may be a high pressure axial flow fan.

And the camera device is mainly used for acquiring images of the cured tobacco leaves. The camera device comprises a camera 420, the camera 420 corresponds to the shooting opening 411 and is arranged in the installation cavity, and the camera 420 can collect images of flue-cured tobacco leaves in the curing barn from the shooting opening 411 outwards in work. Specifically, the camera 420 is mounted in the mounting cavity through the bracket 450, and a space for the movement of the shield door 430 is left between the front end surface of the camera 420 and the inner wall surface of the mounting cavity. In one example, bracket 450 is secured at one end to the side of the mounting cavity and extends laterally inward at the other end and is connected to camera head 420. The camera device can collect the following images of the tobacco leaves to be weighed and baked so as to facilitate comprehensive analysis.

The shield door 430 is mainly used to open and close the photographing opening 411. The shield door 430 is movably installed on the photographing box 410, and specifically, the shield door 430 is movably installed on an inner wall surface corresponding to the photographing opening 411 in the installation cavity. Preferably, a pair of slide rails 460 is arranged in the installation cavity, two ends of the shielding door 430 are installed on the slide rails 460 in a matching manner, for example, two ends of the inner wall surface of the installation cavity where the shooting opening 411 is located are respectively provided with one slide rail 460 with a long strip-shaped groove, two ends of the shielding door 430 are installed in the long strip-shaped grooves in a matching manner, so that the shielding door 430 can be limited from moving on the inner wall surface attached to the installation cavity, and the reliability of closing the shooting opening 411 is improved.

The driving source 440 is mainly used for driving the shield door 430 to move. A driving source 440 is mounted on the photographing box 410 to drive the shield door 430 between closing and opening the photographing opening 411. In one example, the driving device is an air cylinder, a base of the air cylinder is fixed in the installation cavity, a free end of a telescopic rod of the air cylinder is connected with the shielding door 430, and the air cylinder drives the shielding door 430 to move on the sliding rail 460. Of course, in other embodiments, the driving source 440 may also be an electric or various forms of cylinders or push-type power devices.

In order to prevent external dust from entering the installation cavity and affecting the shooting of the camera 420, a first air filter 470 is installed at the air inlet 412, and a second air filter is installed at the air outlet 413, so that the dust in the external air is filtered by the air filters. The first air filter 470 is installed at an outer end of the blower 480.

For the sake of clear shooting, a light supplement lamp 140 may be disposed on a partition board in the smoking room 100 at a position close to the camera 420. Preferably, two light supplement lamps 140 are respectively installed at upper and lower positions of the camera 420.

The method of operation of the image acquisition system 400 comprises the steps of:

and S1, before shooting, starting the fan 480 to make the outside air enter the installation cavity and be discharged from the air outlet 413. The step is mainly to preprocess the environment in the installation cavity and remove fog and moisture on the camera 420 so as to ensure the definition of camera shooting. The specific time may be determined according to the actual installation environment of the photographing case 410, and may be, for example, 2 minutes or 3 minutes.

S2, during shooting, the working state of the fan 480 is kept, the shooting opening 411 is opened by driving the shield door 430 to move through the air cylinder, the camera 420 can be controlled to shoot and collect images of the flue-cured tobacco rapidly at the moment, air entering from the air inlet 412 is discharged through the air outlet 413 and the shield door 430 respectively in the process, and air in the flue-curing barn tobacco chamber 100 is prevented from entering the installation cavity from the shield door 430, so that the problem that high-temperature and high-humidity air in the flue-curing barn tobacco chamber 100 enters the installation cavity and is cooled and atomized when encountering the camera 420, and the shooting definition of the camera 420 is further influenced is solved.

And S3, after shooting, driving the shielding door 430 to move through the air cylinder to close the shooting port 411, simultaneously delaying the working state of the fan 480, and closing the fan 480 after delaying the completion. The effect of the delay fan 480 is that after the shield door 430 is closed, the air in the installation cavity continues to be processed in a flowing manner, so that the air environment in the installation cavity can be kept consistent, the phenomenon of atomization of the surface of the camera 420 due to air problems is avoided as much as possible, and the preprocessing time before the next acquisition is shortened. The specific time in this step may be determined according to the actual installation environment of the photographing case 410, and may be, for example, 1 minute or 2 minutes.

A flue-cured tobacco weighing device 500 is installed in the tobacco housing 100 to measure the weight of a part of the test, so that a worker can observe and record the weight change of the tobacco during the curing process. The flue-cured tobacco weighing apparatus 500 includes a load cell 510, a support bracket 520, and a first spacer screen 530.

The load cell 510 is mainly used to sense the total weight of the support bracket 520. A load cell 510 is mounted on each of the upper end faces of the two support beams. In order to improve the stabilization effect, a groove may be formed in the upper end surfaces of the two support beams, and the bottom of the load cell 510 is mounted in the groove. Load cell 510 may be a pressure load cell 510.

The support bracket 520 is mainly used for weaving tobacco or stacking tobacco leaves. The two ends of the support bracket 520 respectively rest on the two weighing sensors 510, and the support bracket 520 is adapted to hang the flue-cured tobacco leaves to be weighed, i.e. the tobacco leaves can be woven on the support bracket 520 during the curing. Preferably, the bottom surfaces of the two ends of the supporting bracket 520 are provided with the second isolation nets 521, so that the flue-cured tobacco leaves to be weighed are limited between the two second isolation nets 521, and particularly, the tobacco leaves can be prevented from contacting the wall surfaces in the curing barn, and the weighing accuracy is further influenced.

Preferably, a third isolation net 522 which is horizontally placed is arranged between the two second isolation nets 521, and the third isolation net 522 can be used for stacking the bulk tobacco leaves which are weighed and baked.

Since the second isolation net 521 and the third isolation net 522 are both of a mesh structure, the tobacco leaf baking environment in the support bracket 520 is consistent with other tobacco leaf baking environments in the baking room, and thus weighing errors caused by inconsistent environments can be avoided.

The first separation net 530 is mainly used to separate the flue-cured tobacco leaves hung on the support brackets 520 from the flue-cured tobacco leaves hung on the two support beams. The first separation net 530 is movably hung on the two support beams. Preferably, the first separation net 530 is two pieces, which are respectively disposed at both sides of the support bracket 520 to separate the flue-cured tobacco leaves at both sides of the support bracket 520 from the tobacco leaves on the support bracket 520.

Preferably, the first separation net 530 is provided at both upper ends thereof with mounting seats 531, screw holes are provided in the mounting seats 531, and correspondingly, screw holes are provided at the upper end surface of the support beam, and the mounting seats 531 are fixed to the support beam by screwing fixing bolts 532 into the two screw holes.

The signal output ends of the two weighing sensors 510 are electrically connected with the signal input end of the baking room controller, the signal output end of the baking room controller is electrically connected with the display, the weighing sensors 510 transmit the detected total electric signals of the bearing bracket 520 to the baking room controller, and the display is used for displaying the total weight value of the bearing bracket 520 in real time.

During testing, the tobacco leaves are woven on the tobacco hanging rods and the supporting bracket 520, then the tobacco hanging rods are hung on the supporting beams, the supporting bracket 520 is also hung on the supporting beams, and the weighing sensors 510 are arranged on the contact surfaces of the supporting bracket 520 and the supporting beams; then, installing first separation nets 530 on two sides of the supporting bracket 520 to avoid weighing errors caused by contact and scraping of other tobacco leaves and the tobacco leaves on the supporting bracket 520; finally, baking according to the baking process, reading the total weight of the support bracket 520 from the display, and removing the weight of the original support bracket 520 is the weight of the baked tobacco leaves. Of course, the third screen 522 may be stacked with loose tobacco leaves for baking weighing test as required.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A heat pump type test curing barn comprises a tobacco containing chamber (100), and is characterized in that the tobacco containing chamber (100) is of a box body structure formed by plates, a supporting beam is arranged in the tobacco containing chamber (100), the supporting beam is suitable for hanging tobacco leaves, a tobacco containing door (170) which can be opened movably is arranged on the side surface of the tobacco containing chamber (100), and a heat insulation layer is arranged on the inner wall surface of the tobacco containing chamber (100);

a vertical air duct (120) with two open ends is arranged in the smoke containing chamber (100), a heat exchanger (320) of a heat pump unit (300) is arranged in the vertical air duct (120), a compressor of the heat pump unit (300) is arranged outside the smoke containing chamber (100), and the compressor is connected with the heat exchanger (320) through a refrigerant pipe (310);

a circulating fan (330) is arranged in the vertical air duct (120), the circulating fan (330) is suitable for guiding air heated by the heat exchanger (320) into the tobacco loading chamber (100) from a first end of the vertical air duct (120), and the air enters the vertical air duct (120) again from a second end of the vertical air duct (120) for circulation after tobacco leaves are heated in the tobacco loading chamber (100);

an image acquisition system (400), a baked tobacco leaf weighing device (500), a temperature and humidity detection device (130), a moisture exhaust window (160) and a cold air door (180) are further installed in the tobacco containing chamber (100).

2. A heat pump test barn according to claim 1, wherein an electric heating assist mechanism (340) is provided in the vertical air duct (120), wherein the electric heating assist mechanism (340) is adapted to heat the air in the vertical air duct (120) when the heat pump is running low on heat.

3. A heat pump test barn according to claim 1, wherein the image acquisition system (400) comprises:

the shooting box body (410) comprises an installation cavity, a shooting opening (411), an air inlet (412) and an air outlet (413) are formed in the shooting box body (410), the shooting opening (411) faces to flue-cured tobacco leaves in the flue-curing barn tobacco loading chamber (100), and the air inlet (412) and the air outlet (413) are communicated with the environment outside the flue-curing barn tobacco loading chamber (100);

a fan (480) mounted at the intake vent (412), the fan (480) adapted to draw air from outside the intake vent (412) and deliver the air into the mounting cavity;

the camera device comprises a camera (420), the camera (420) corresponds to the shooting port (411) and is arranged in the installation cavity, and the camera (420) can acquire images of the flue-cured tobacco leaves in the curing barn from the shooting port (411);

the shielding door (430), the shielding door (430) can be movably installed on the shooting box body (410);

and the driving source (440) is arranged on the shooting box body (410), and the driving source (440) can drive the shielding door (430) to move between the closing and the opening of the shooting opening (411).

4. A heat pump test barn according to claim 3, wherein a first air filter (470) is mounted at the air inlet (412), a second air filter is mounted at the air outlet (413), and wherein the fan (480) is a high pressure axial fan mounted at an inner end of the first air filter (470).

5. A heat pump test barn according to claim 3, wherein a pair of rails (460) are provided within the mounting cavity, and wherein the ends of the screen door (430) are configured to fit over the rails (460).

6. A heat pump test barn according to claim 5, wherein the driving device is a cylinder, the base of the cylinder is fixed in the mounting cavity, the free end of the telescopic rod of the cylinder is connected to the screen door (430), and the cylinder drives the screen door (430) to move on the sliding rail (460).

7. A heat pump test barn according to claim 3, wherein the image acquisition system (400) is embedded in a wall of the smoking room (100) and wherein the air inlet opening (412) and the air outlet opening (413) are located outside the wall of the smoking room (100).

8. A heat pump test barn according to claim 1, wherein the flue-cured tobacco weighing device (500) comprises:

two weighing sensors (510) respectively mounted on two adjacent support beams;

the two ends of the supporting bracket (520) are respectively arranged on the two weighing sensors (510), and the supporting bracket (520) is suitable for hanging the baked tobacco leaves to be weighed;

the first isolation net (530), the first isolation net (530) is movably hung on the two support beams, so as to isolate the flue-cured tobacco leaves hung on the support bracket (520) from the flue-cured tobacco leaves hung on the two support beams.

9. A heat pump test barn according to claim 8, wherein the first separation net (530) is provided in two pieces, one on each side of the support bracket (520); the upper ends of two sides of the first isolation net (530) are provided with mounting seats (531), screw holes are formed in the mounting seats (531), screw holes are correspondingly formed in the upper end face of the supporting beam, and fixing bolts (532) are screwed into the two screw holes to fix the mounting seats (531) on the supporting beam.

10. A heat pump test barn according to claim 8, wherein second separation nets (521) are provided at the bottom of each end of the support bracket (520) to confine the flue-cured tobacco leaves to be weighed between the second separation nets (521), and wherein a third separation net (522) is provided between the second separation nets (521) to lie flat, the third separation net (522) being adapted to stack the flue-cured tobacco leaves.

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