A test device for testing moisture in coal

Abstract

A test device for testing the moisture content in coal, comprising a box, an air intake system, an air outlet system, a heating device, a swinging and rotating system and a weighing device; an air intake system is arranged at one end of the box, and an air outlet system is arranged at the upper end; a heating device is arranged in the box, and the heating device is connected with the air intake system; a weighing device is arranged in the box, and the weighing device comprises a weighing bottle support platform and a weighing bottle body; the weighing bottle body is arranged on the weighing bottle support platform, a weighing bottle main cover is arranged on the top of the weighing bottle body, a weighing bottle cover upper cover is arranged on the weighing bottle main cover, a gear is arranged on the weighing bottle cover upper cover, and the gear is meshed with the gear bar of the weighing bottle cover upper cover; the weighing bottle support platform is arranged on the swinging and rotating system. The present invention can automatically seal the weighing bottle after the test is completed, avoid human factors in the test error, and improve the accuracy of the test result; the present invention has a reasonable scheme, a simple structure, and is easy to implement, and can conveniently and accurately meet the detection needs of moisture content in coal.

Description

Technical Field

[0001] The invention belongs to the technical field of coal quality testing, and in particular relates to a testing device for testing the moisture in coal. Background Art

[0002] In the quality test of coal, the moisture content of coal refers to the moisture content of coal in the state when it is received. On the one hand, the moisture content of coal affects the weight calculation and calorific value when the power plant settles the coal purchase costs. On the other hand, the moisture content can also be used as an important indicator to evaluate abnormalities during coal loading, unloading and transportation. Furthermore, the moisture content of coal is also an important indicator for evaluating the fluidity of coal. The fluidity of coal is an important parameter for pre-judging the adhesion and blockage in coal bunkers, coal pipes and coal feeders. At present, the laboratory determination of the moisture content of coal generally requires that the quantitative sample be placed in a glass weighing bottle with a ground cover, placed in a blast (nitrogen) drying oven, and kept at 105-110°C until the mass is constant. The weight of the moisture content is calculated based on the mass loss.

[0003] According to existing detection devices and test methods, coal quality analysis experiments generally need to be equipped with two types of drying ovens, air blast ovens and nitrogen blast ovens, to meet the testing of conventional coal and easily oxidized lignite, which invisibly increases the cost of equipment procurement, maintenance and site use, and also reduces the utilization rate of equipment. At the same time, for lignite with high moisture content and easy film formation on the surface, the actual test process requires manual swinging of the weighing bottle to prevent the formation of water film. The entire detection process is mainly completed manually, the process is cumbersome, the test time is long, the results are easily affected by non-technical factors, and high-temperature operation is easy to burn hands. Therefore, if a special test device that can be both nitrogen-filled and air-blasted can be invented, and is equipped with a special rotating stirring weighing bottle, it will inevitably reduce the investment cost of the coal quality testing laboratory, while improving the detection efficiency and reducing the risk of burns for testers. Summary of the invention

[0004] The invention aims to provide a special test device which can be used for nitrogen blowing and air blowing, and is equipped with a special weighing bottle.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A test device for testing moisture in coal, comprising a box, an air intake system, an air outlet system, a heating device, a swinging and rotating system and a weighing device;

[0007] An air intake system is provided at one end of the box, and an air outlet system is provided at the upper end;

[0008] The air intake system includes a nitrogen supply device, an air blower and a ventilation pipeline; wherein the nitrogen supply device and the air blower are both connected to the ventilation pipeline;

[0009] A heating device is provided in the box, and a heat dissipation hole is provided on the top of the heating device; the heating device is connected to the air intake system;

[0010] A weighing device is arranged in the box, and the weighing device comprises a weighing bottle supporting platform, a weighing bottle body, a weighing bottle main cover, a weighing bottle cover upper cover, a weighing bottle cover upper cover gear bar, an upper cover gear bar push rod positioning device, a positioning groove, a connecting rod and a gear positioning rod; wherein a connecting rod is arranged at the bottom of the weighing bottle supporting platform, the weighing bottle body is arranged on the weighing bottle supporting platform, a weighing bottle main cover is arranged on the top of the weighing bottle body, a weighing bottle cover upper cover is arranged on the weighing bottle main cover, a gear is arranged on the weighing bottle cover upper cover, and the gear is meshed with the weighing bottle cover upper cover gear bar;

[0011] A swinging and rotating system located above the heating device is arranged in the box body, and a weighing bottle supporting platform is arranged on the swinging and rotating system.

[0012] A further improvement of the present invention is that an upper cover gear bar push rod positioning device is provided at one end of the upper cover gear bar of the weighing bottle cap, and a gear positioning rod is provided on the upper cover of the weighing bottle cap; and a box door, a display control system, a door handle and an observation window are provided on the box body.

[0013] A further improvement of the present invention is that the box door is arranged on the box body through a hinge.

[0014] A further improvement of the present invention is that a detachable base is provided at the bottom of the box.

[0015] A further improvement of the present invention is that the nitrogen supply device comprises a nitrogen bottle, a pressure controller, a flow meter controller and a solenoid valve controller, and the outlet of the nitrogen bottle is connected to the ventilation pipeline via the pressure controller, the flow meter controller and the solenoid valve controller.

[0016] A further improvement of the present invention is that the blowing device includes a blower, a relay controller and a flow meter controller, and the blower, the relay controller and the flow meter controller are all connected to the ventilation duct.

[0017] A further improvement of the present invention is that a box partition placement hole is opened on the inner wall of the box, both ends of the box partition are arranged in the box partition placement hole, and the box partition is arranged horizontally; the weighing bottle support platform is arranged on the box partition.

[0018] A further improvement of the present invention is that a positioning groove is provided on the weighing bottle supporting platform, and the weighing bottle body is arranged in the positioning groove.

[0019] A further improvement of the present invention is that the swinging and rotating system includes a rotating screw base, a rotating connecting screw, a rotating screw support platform, a rotating gear, a rotating gear bar, a rotating gear pin and a positioning groove; wherein, a rotating gear is arranged on the rotating screw base, the rotating gear is meshed with a rotating gear bar located on one side of the rotating gear, a rotating connecting screw is arranged on the rotating gear, a rotating screw support platform is arranged on the rotating connecting screw, a weighing bottle support platform is arranged on the rotating screw support platform, the rotating screw support platform is connected to the weighing bottle support platform by a connecting rod, and a rotating gear pin is arranged on the rotating gear.

[0020] A further improvement of the present invention is that one end of the rotating gear bar is connected to a rotating gear push rod swing device; and a temperature and humidity probe is arranged in the box body.

[0021] Compared with the prior art, the present invention has the following technical effects:

[0022] In the present invention, a nitrogen passing device, an air blowing device and a ventilation pipeline are provided, and both the nitrogen passing device and the air blowing device are connected to the ventilation pipeline, so that the air blowing device and the nitrogen passing device can be freely switched, so that one box can be used for two purposes and the ventilation flow rate can be controlled; in the present invention, a swinging and rotating system is provided, so that the coal powder can be swung and stirred during the moisture test, so as to improve the accuracy of the detection result and the detection efficiency; the present invention can set a test flow, can alarm to prompt the program running status, and can realize automatic shutdown, so as to save manpower and reduce energy consumption; the present invention can automatically seal the measuring bottle after the test is completed, so as to avoid the human factor in the test error, improve the accuracy of the detection result, and avoid scalding of personnel; the present invention has a reasonable scheme, a simple structure, is easy to realize, and can conveniently and accurately realize the detection demand of moisture in coal.

[0023] Furthermore, the present invention is equipped with a temperature and humidity probe to achieve real-time monitoring of the status of the test device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the box assembly structure of the present invention.

[0025] Figure 2 It is a schematic diagram of the cabinet system structure viewed from above of the present invention.

[0026] Figure 3 It is a structural schematic diagram of the swing and rotation system of the present invention.

[0027] Figure 4 It is a schematic diagram of assembling a weighing bottle and a rotating gear push rod rocking device of the present invention.

[0028] Figure 5 It is a schematic diagram of the structure of the air intake system of the present invention.

[0029] Among them: 1-air intake system, 2-heating device, 3-heat dissipation hole, 4-rotating screw base, 5-rotating connecting screw, 6-rotating screw support platform, 7-rotating gear, 8-box partition, 9-weighing bottle support platform placement hole, 10-weighing bottle support platform, 11-weighing bottle body, 12-weighing bottle main cover, 13-weighing bottle cover upper cover, 14-weighing bottle cover upper cover gear bar, 15-air outlet system, 16-upper cover gear bar push rod positioning device, 17-rotating gear push rod swing device, 18-detachable base , 19-hinge, 20-box door, 21-display control system, 22-observation window, 23-door handle, 24-rotating gear bar, 25-rotating gear latch, 26-positioning groove, 27-connecting rod, 28-gear positioning rod, 29-box partition placement hole, 30-check valve outlet hole, 31-nitrogen bottle, 32-pressure controller, 33-flow meter controller, 34-solenoid valve controller, 35-blowing device consists of a blower, 36-relay controller, 37-flow meter controller, 38-ventilation duct. DETAILED DESCRIPTION

[0030] Specific embodiments of the present invention are given below. It should be noted that the present invention is not limited to the following specific embodiments, and all equivalent changes made on the basis of the technical solution of this application fall within the protection scope of the present invention.

[0031] Following the above technical solution, Figures 1 to 5 As shown, this embodiment provides a test device for testing the moisture content in coal. The control system of the device can realize the switching between nitrogen and air, temperature setting and monitoring, the swinging of the weighing bottle during the test, and the opening and closing of the test device.

[0032] The test device for testing the moisture content in coal of the present invention comprises a box, an air intake system 1, a heating device 2, a box door 20, a display control system 21, a swing rotation system and a weighing device; a detachable base 18 is arranged at the bottom of the box.

[0033] The box door 20 is provided with a display control system 21, a door handle 23, an observation window 22 and a hinge 19; the display control system 21 is used to monitor the state of the test device and can input instructions to operate and set each control unit, such as controlling the temperature, the type of air intake and the ventilation frequency, etc.;

[0034] The box body is provided with a box door 20, and the box door 20 is assembled by a hinge 19; the rear end of the box body is provided with an air intake system 1, and the upper end is provided with an air outlet system 15;

[0035] The air intake system 1 is composed of a nitrogen supply device, a blower device and a ventilation pipeline 38; wherein the nitrogen supply device and the blower device are both connected to the ventilation pipeline 38. The nitrogen supply device includes a nitrogen bottle 31, a pressure controller 32, a flow meter controller 33 and a solenoid valve controller 34, and the outlet of the nitrogen bottle 31 is connected to the ventilation pipeline 38 via the pressure controller 32, the flow meter controller 33 and the solenoid valve controller 34.

[0036] The blowing device includes a blower 35 , a relay controller 36 and a flow meter controller 37 , and the blower 35 , the relay controller 36 and the flow meter controller 37 are all connected to the ventilation duct 38 .

[0037] When nitrogen is needed, the nitrogen bottle 31, the pressure controller 32, the flow meter controller 33 and the solenoid valve controller 34 are turned on, the nitrogen bottle 31 enters the air intake system 1 at a set flow rate, and the blower is in a closed state;

[0038] When air needs to be introduced, the air blowing device is turned on by the blower 35, the relay controller 36 and the flow meter controller 37, and the nitrogen supply device is in the closed state;

[0039] A heating device 2 is provided in the box, and a heat dissipation hole 3 is provided on the top of the heating device 2. The heating device 2 is connected to the air intake system 1, and the heating device 2 and the air intake system 1 are used in conjunction with each other. After the gas enters the heating device 2 from the air intake system 1 and is heated, the gas is dissipated from the heating cavity of the heating device 2 through the heat dissipation hole 3 on the top thereof, and the gas is finally discharged from the air outlet system 15;

[0040] The inner wall of the box body is provided with a box body partition placement hole 29, and both ends of the box body partition 8 are arranged in the box body partition placement hole 29, and the box body partition 8 is arranged horizontally. A temperature and humidity probe is arranged in the box body.

[0041] A weighing device is arranged in the box body, and the weighing device includes a weighing bottle supporting platform 10, a weighing bottle body 11, a weighing bottle main cover 12, a weighing bottle cover upper cover 13, a weighing bottle cover upper cover gear bar 14, an upper cover gear bar push rod positioning device 16, a positioning groove 26, a connecting rod 27 and a gear positioning rod 28; wherein, the weighing bottle supporting platform 10 is located on the box body partition 8, and a connecting rod 27 is arranged at the bottom of the weighing bottle supporting platform 10. A positioning groove 26 is provided on the weighing bottle support platform 10, and the weighing bottle body 11 is arranged in the positioning groove 26. A weighing bottle main cover 12 is provided on the top of the weighing bottle body 11, and a weighing bottle cover upper cover 13 is provided on the weighing bottle main cover 12, and a gear is provided on the weighing bottle cover upper cover 13, and the gear is meshed with the weighing bottle cover upper cover gear bar 14, and a gear positioning rod 28 is also provided on the weighing bottle cover upper cover 13; an upper cover gear bar push rod positioning device 16 is provided at one end of the weighing bottle cover upper cover gear bar 14; the upper cover gear bar push rod positioning device 16 pulls the weighing bottle cover upper cover gear bar 14 to rotate, and the weighing bottle cover upper cover gear bar 14 drives the weighing bottle cover upper cover 13 to rotate, thereby completing the sealing and opening of the weighing bottle.

[0042] See also Figure 3 A swinging and rotating system is arranged in the box body, and the swinging and rotating system is assembled by a rotating screw base 4, a rotating connecting screw 5, a rotating screw support platform 6, a rotating gear 7, a rotating gear bar 24, a rotating gear pin 25 and a positioning groove 26; wherein, a rotating gear 7 is arranged on the rotating screw base 4, and the rotating gear 7 is meshed with the rotating gear bar 24 located on one side of the rotating gear 7, a rotating connecting screw 5 is arranged on the rotating gear 7, a rotating screw support platform 6 is arranged on the rotating connecting screw 5, a weighing bottle support platform 10 is arranged on the rotating screw support platform 6, the rotating screw support platform 6 is connected to the weighing bottle support platform 10 through a connecting rod 27, and a rotating gear pin 25 is arranged on the rotating gear 7.

[0043] One end of the rotating gear bar 24 is connected to the rotating gear push rod swing device 17. The rotating gear push rod swing device 17 is extended and retracted to drive the rotating gear bar 24 to move, thereby driving the rotating gear 7 to rotate and swing at a certain angle, and then driving the rotating connecting screw 5 to rotate. The rotation of the rotating connecting screw 5 drives the rotating screw support platform 6 to rotate, and the rotation of the rotating screw support platform 6 drives the weighing bottle support platform 10 to rotate.

[0044] The working process of the present invention is as follows:

[0045] When the test device is tested, the required temperature and ventilation type for the test are set in the display control system 21. It is pointed out here that if the ventilation type is set to nitrogen, the program automatically introduces air for a certain period of time and then introduces nitrogen to reduce the waste of nitrogen during the heating process; the heating device 2 and the air intake system 1 are turned on according to the program instructions, and the gas enters the heating device and dissipates out of the heating cavity from the heat dissipation holes 3 above it, and the gas is finally discharged from the air outlet system 15 to heat and pre-ventilate the device; when the program is completed, the program completion alarm sounds; the inspector places a special weighing bottle; the sample test time and ventilation frequency are set in the display control system 21, and the swing rotation system starts to run. When the program is completed, the swing rotation system stops running, and the upper cover gear bar push rod positioning device 16 pulls the upper cover gear bar 14 of the weighing bottle cover to rotate, completing the sealing of the weighing bottle, and the program completion alarm sounds, and the device automatically cools down to the set temperature.

Claims

1. A test device for testing the moisture content in coal, characterized in that: It comprises a box body, an air intake system (1), an air outlet system (15), a heating device (2), a swinging and rotating system, and a weighing device; An air intake system (1) is provided at one end of the box, and an air outlet system (15) is provided at the upper end; The air intake system (1) comprises a nitrogen supply device, an air blowing device and an air duct (38); wherein the nitrogen supply device and the air blowing device are both connected to the air duct (38); A heating device (2) is provided in the box body, and a heat dissipation hole (3) is provided on the top of the heating device (2); the heating device (2) is connected to the air intake system (1); A weighing device is arranged in the box body, and the weighing device comprises a weighing bottle supporting platform (10), a weighing bottle body (11), a weighing bottle main cover (12), a weighing bottle cover upper cover (13), a weighing bottle cover upper cover gear bar (14), an upper cover gear bar push rod positioning device (16) and a positioning groove (26); wherein the weighing bottle body (11) is arranged on the weighing bottle supporting platform (10), a weighing bottle main cover (12) is arranged on the top of the weighing bottle body (11), a weighing bottle cover upper cover (13) is arranged on the weighing bottle main cover (12), a gear is arranged on the weighing bottle cover upper cover (13), the gear is meshed with the weighing bottle cover upper cover gear bar (14), and an upper cover gear bar push rod positioning device (16) is arranged at one end of the weighing bottle cover upper cover gear bar (14); A rocking and rotating system is arranged in the box body and is located above the heating device (2); and the weighing bottle supporting platform (10) is arranged on the rocking and rotating system; A connecting rod (27) is provided at the bottom of the weighing bottle support platform (10), and a gear positioning rod (28) is provided on the weighing bottle cover upper cover (13); a box door (20), a display control system (21), a door handle (23) and an observation window (22) are provided on the box body; The swinging and rotating system comprises a rotating screw base (4), a rotating connecting screw (5), a rotating screw support platform (6), a rotating gear (7), a rotating gear bar (24), a rotating gear latch (25) and a positioning groove (26); wherein a rotating gear (7) is arranged on the rotating screw base (4), the rotating gear (7) is meshed with a rotating gear bar (24) located on one side of the rotating gear (7), a rotating connecting screw (5) is arranged on the rotating gear (7), a rotating screw support platform (6) is arranged on the rotating connecting screw (5), a weighing bottle support platform (10) is arranged on the rotating screw support platform (6), the rotating screw support platform (6) is connected to the weighing bottle support platform (10) via a connecting rod (27), and a rotating gear latch (25) is arranged on the rotating gear (7).

2. A test device for testing moisture in coal according to claim 1, characterized in that: The box door (20) is arranged on the box body via a hinge (19).

3. A test device for testing moisture in coal according to claim 1, characterized in that: A detachable base (18) is provided at the bottom of the box.

4. A test device for testing moisture in coal according to claim 1, characterized in that: The nitrogen supply device comprises a nitrogen bottle (31), a pressure controller (32), a flow meter controller (33) and a solenoid valve controller (34); the outlet of the nitrogen bottle (31) is connected to a ventilation pipeline (38) via the pressure controller (32), the flow meter controller (33) and the solenoid valve controller (34).

5. A test device for testing moisture in coal according to claim 1, characterized in that: The air blowing device comprises an air blower (35), a relay controller (36) and a flow meter controller (37), and the air blower (35), the relay controller (36) and the flow meter controller (37) are all connected to the ventilation pipe (38).

6. A test device for testing moisture in coal according to claim 1, characterized in that: A box partition placement hole (29) is provided on the inner wall of the box body, two ends of the box partition (8) are arranged in the box partition placement hole (29), and the box partition (8) is arranged horizontally; and the weighing bottle support platform (10) is arranged on the box partition (8).

7. A test device for testing moisture in coal according to claim 1, characterized in that: A positioning groove (26) is provided on the weighing bottle supporting platform (10), and the weighing bottle body (11) is arranged in the positioning groove (26).

8. A test device for testing moisture in coal according to claim 1, characterized in that: One end of the rotating gear bar (24) is connected to a rotating gear push rod swing device (17); a temperature and humidity probe is arranged in the box.

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