Multi-station moisture tester
By designing a multi-station moisture tester, using multiple drying chambers and weighing mechanisms to test multiple sets of samples simultaneously, the problem of low testing efficiency in the prior art is solved and efficient coal moisture content testing is achieved.
Patent Information
- Application Number
- CN202420624993.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-28
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-03-28
AI Technical Summary
The existing moisture tester can only dry one sample in a single time, and the test efficiency is low.
A multi-station moisture tester is designed, including multiple drying chambers and corresponding weighing mechanisms, allowing multiple sets of samples to be tested at the same time, and the drying process is accelerated by the drying mechanism and the negative pressure fan.
It realizes moisture testing of multiple groups of samples at the same time, improves the working efficiency of testing coal moisture content, and accelerates drying speed through negative pressure fans to save energy.
Smart Images
Figure CN222579886U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of moisture testers, in particular to a multi-station moisture tester. Background Art
[0002] The moisture content of coal is the most basic indicator for evaluating the economic value of coal. The more moisture there is in coal, the more useless components there are in it. When there is a lot of moisture in coal, not only does the useful components of coal decrease, but also during the combustion process of coal, a lot of heat energy needs to be absorbed to make the moisture in the coal evaporate into water vapor.
[0003] In the process of coal moisture testing, the coal is first sampled and the mass before drying is recorded, and then the coal sample is placed in a drying device for drying to evaporate the moisture in the coal, and then the dried coal is taken out and weighed to calculate the moisture content in the coal. However, the moisture tester in the prior art can only dry one sample at a time, and the test efficiency is low. Utility Model Content
[0004] In order to improve the work efficiency of testing the moisture content of coal, the present application provides a multi-station moisture tester.
[0005] The present application provides a multi-station moisture tester, which adopts the following technical solution:
[0006] A multi-station moisture tester is used to test the moisture content in a sample, comprising a cabinet, the cabinet being provided with a plurality of drying cavities, the plurality of drying cavities being arranged in sequence along the height direction of the cabinet, a cabinet door being rotatably connected to the cabinet for controlling the opening and closing of the drying cavities, a drying mechanism being provided on a side wall of the drying cavity away from the cabinet door, the drying mechanism being used to dry the sample in the drying cavity, the cabinet being further provided with a weighing mechanism corresponding to the drying cavity, the weighing mechanism being used to reflect the mass of the sample in the drying cavity.
[0007] By adopting the above technical solution, in the actual test process, the sample can be placed in the drying chamber, the weighing mechanism weighs the sample for the first time, and then the cabinet door is closed. After the sample is dried by the drying mechanism, the weighing mechanism further weighs the dried sample, so as to obtain the moisture content in the sample. By setting up three drying chambers, the moisture content of three groups of samples can be tested at the same time, and the drying of the three groups of samples does not need to be carried out synchronously, which improves the work efficiency of testing the moisture content of coal.
[0008] Preferably, the drying mechanism includes a heating tube and a negative pressure fan, the heating tube is arranged in a spiral shape, a gasket connected to the inner wall of the drying chamber is provided on the heating tube, the negative pressure fan is located in the middle of the heating tube, the negative pressure fan is connected to the inner wall of the drying chamber, an air inlet hole corresponding to the negative pressure fan is opened on the cabinet, the air inlet hole is connected to the drying chamber, and an insulating pad is provided between the heating tube and the inner wall of the drying chamber.
[0009] By adopting the above technical solution, after the heating tube is heated, the heated air is blown toward the sample through the negative pressure fan, thereby accelerating the efficiency of sample drying. By setting the thermal insulation pad, the heating tube is not easy to cause damage to the inner wall of the drying chamber, thereby extending the service life of the moisture tester.
[0010] Preferably, the cabinet is further provided with an air outlet pipe corresponding to the drying chamber, the air outlet pipe is connected to the drying chamber, and one end of the air outlet pipe away from the drying chamber passes through the cabinet;
[0011] The cabinet body is provided with a cover shell, which protrudes in a direction away from the cabinet body to form an air storage cavity. The cover shell is provided with a plurality of ventilation holes connected with the air storage cavity. The cover shell is rotatably connected with a closing plate, the shape of which is adapted to the ventilation hole, and the overlapping area of the ventilation hole and the closing plate can be controlled by rotating the closing plate. The cover shell is coaxially provided with a rotating shaft, and the closing plate rotates with the rotating shaft as the rotating axis. The closing plate is provided with a control plate, the cover shell is provided with a control groove for the control plate to slide, and the rotating shaft is provided with an air outlet hole connected with the air storage cavity.
[0012] By adopting the above technical solution, in the initial stage of the test, the closing plate can be controlled by the control plate to rotate until it completely overlaps with the vent hole, and the gas in the drying chamber can only be discharged out of the drying chamber through the air outlet hole, which increases the temperature rise rate in the drying chamber, can shorten the experimental process and save energy to a certain extent; after the temperature in the drying chamber stabilizes, the closing plate is controlled to rotate until the vent hole is connected to the outside world, thereby expanding the exhaust flow rate and improving the safety during the test.
[0013] Preferably, the weighing mechanism includes a placing column, a pressure sensor, a weighing instrument, a tray and a supporting column. The pressure sensor is electrically connected to the weighing instrument. The placing column is arranged on the pressure sensor. A fitting groove for the supporting column to be fitted therein is formed through the placing column. A connecting tube that cooperates with the supporting column is connected to the bottom wall of the drying chamber. The supporting column is embedded in the fitting groove after passing through the connecting tube. The tray is used to place samples. One end of the supporting column away from the placing column is fitted with the tray.
[0014] By adopting the above technical solution, with the cooperation of the placement column, pressure sensor, weighing instrument, tray and supporting column, the weight of the sample in the drying chamber can be detected in real time during the test, and there is no need to take the dried sample out of the drying room and then measure the weight, thereby improving the accuracy of the test.
[0015] Preferably, a single drying chamber cooperates with a plurality of weighing mechanisms.
[0016] By adopting the above technical solution and setting up multiple weighing mechanisms, moisture tests can be performed on multiple samples of the same batch at the same time under the same drying environment, thereby improving the accuracy of the test.
[0017] Preferably, the cabinet is provided with an operation indicator light corresponding to the drying chamber, and the cabinet is also provided with a door switch cooperating with the cabinet door, and the door switch is electrically connected to the operation indicator light.
[0018] By adopting the above technical solution, with the cooperation of the door switch and the operation indicator light, if the corresponding cabinet door is opened during the operation of the drying mechanism, the operation indicator light flashes, thereby improving the safety of the test.
[0019] Preferably, a temperature sensor is provided on the inner wall of the drying chamber, and the temperature sensor is used to detect the temperature in the drying chamber.
[0020] By adopting the above technical solution and setting a temperature sensor, if the temperature in the drying chamber is too high or the temperature remains low within a certain period of time, an alarm can be issued through the detection of the temperature sensor, thereby improving the safety of the test.
[0021] Preferably, a sealing ring is connected to the inner wall of the opening of the drying chamber, and the cabinet door is tightly pressed against the sealing ring when the drying chamber is closed.
[0022] By adopting the above technical solution and setting the sealing ring, the sealing performance of the drying chamber can be improved, and the heat energy required during the heating process can be reduced.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] 1. In the actual test process, the sample can be placed in the drying chamber, the weighing mechanism weighs the sample for the first time, and then the cabinet door is closed. After the sample is dried by the drying mechanism, the weighing mechanism further weighs the dried sample, so as to obtain the moisture content in the sample. By setting up three drying chambers, the moisture content of three groups of samples can be tested at the same time, and the drying of the three groups of samples does not need to be carried out synchronously, which improves the work efficiency of testing the moisture content of coal;
[0025] 2. In the early stage of the test, the control plate can be used to control the closing plate to rotate until it completely overlaps with the vent hole. The gas in the drying chamber can only be discharged out of the drying chamber through the outlet hole, which increases the temperature rise rate in the drying chamber and can shorten the experimental process and save energy to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.
[0027] Figure 2 It is a schematic diagram of the structure inside the drying chamber in the embodiment of the present application.
[0028] Figure 3 It is a schematic diagram of the cabinet door-less structure in an embodiment of the present application.
[0029] Figure 4 It is a schematic diagram of the structure of the cover body facing away from the cabinet body in the embodiment of the present application.
[0030] Figure 5 It is a schematic diagram of the structure of the cover body facing the cabinet body in the embodiment of the present application.
[0031] Figure 6 It is a schematic diagram of the cabinet back structure in the embodiment of the present application.
[0032] Figure 7 It is a cross-sectional view of the cabinet in the embodiment of the present application.
[0033] Description of reference numerals: 1, cabinet; 11, drying chamber; 111, sealing ring; 112, connecting pipe; 12, cabinet door; 13, air inlet hole; 14, air outlet pipe; 15, accommodating chamber; 2, drying mechanism; 21, heating pipe; 211, gasket; 212, heat insulation pad; 22, negative pressure fan; 23, protective cover; 231, protective through hole; 3, weighing mechanism; 31, placement column; 311, fitting groove; 32, pressure Force sensor; 33. Weighing instrument; 34. Tray; 35. Support column; 351. First column; 352. Second column; 36. Heightening block; 4. Cover; 41. Control slot; 42. Air vent; 43. Closing plate; 431. Control plate; 44. Rotating shaft; 441. Air outlet hole; 5. Control button; 51. Run key; 52. Reset key; 6. Run indicator light; 7. Door switch; 8. Temperature sensor. DETAILED DESCRIPTION
[0034] The following is combined with Figure 1-7 The utility model is described in further detail.
[0035] The present application discloses a multi-station moisture tester for testing the moisture content in a sample. Figure 1 , Figure 2 and Figure 3, including a cabinet 1, on which three drying chambers 11 are arranged in sequence along the height direction of the cabinet 1, and a cabinet door 12 for controlling the opening and closing of the drying chamber 11 is rotatably connected to the cabinet 1, and a drying mechanism 2 is provided on the side wall of the drying chamber 11 away from the cabinet door 12, and the drying mechanism 2 is used to dry the sample in the drying chamber 11, and the cabinet 1 is also provided with a weighing mechanism 3 corresponding to the drying chamber 11, and the weighing mechanism 3 is used to reflect the mass of the sample in the drying chamber 11. In the actual test process, the sample can be placed in the drying chamber 11, and the weighing mechanism 3 weighs the sample for the first time, and then the cabinet door 12 is closed. After the sample is dried by the drying mechanism 2, the weighing mechanism 3 further weighs the dried sample, so that the moisture content in the sample can be obtained. Through the setting of the three drying chambers 11, the moisture content of the three groups of samples can be tested at the same time, and the drying of the three groups of samples does not need to be carried out synchronously, thereby improving the work efficiency of testing the moisture content of coal.
[0036] Reference Figure 2 and Figure 3 A sealing ring 111 is fixedly provided on the inner wall of the opening of the drying chamber 11, and the sealing ring 111 can be fixed to the cabinet body 1 by gluing. When the cabinet door 12 is rotated to close the drying chamber 11, the cabinet door 12 and the sealing ring 111 are tightly pressed against each other, thereby improving the sealing performance of the drying chamber 11 and reducing the heat energy required during the heating process.
[0037] Reference Figure 2 and Figure 3 The drying mechanism 2 includes a heating tube 21 and a negative pressure fan 22. The heating tube 21 is arranged in a spiral shape. A gasket 211 is welded and fixed on the heating tube 21. The gasket 211 can be fixed to the inner wall of the drying chamber 11 by bolts, so that the heating tube 21 is fixed to the inner wall of the drying chamber 11, which is convenient for fixing the heating tube 21. A heat insulation pad 212 is provided between the heating tube 21 and the inner wall of the drying chamber 11. In the embodiment of the present application, the heat insulation pad 212 is made of asbestos, which is widely believed to have excellent heat insulation effect, so that the heating tube 21 is not easy to cause damage to the inner wall of the drying chamber 11, thereby extending the service life of the moisture tester.
[0038] Reference Figure 2 and Figure 3, the negative pressure fan 22 is arranged in the middle of the heating tube 21, and the negative pressure fan 22 is fixed to the inner wall of the drying chamber 11, and an air inlet 13 corresponding to the negative pressure fan 22 is provided on the cabinet 1, and the air inlet 13 is connected to the drying chamber 11. In the actual drying process, the hot air is blown to the sample in the drying chamber by the negative pressure fan 22, thereby improving the drying efficiency. A protective cover 23 is also bolted to the inner wall of the drying chamber 11, and the drying mechanism 2 is located between the protective cover 23 and the inner wall of the drying chamber 11. The protective cover 23 is penetrated by a plurality of protective through holes 231 connected to the drying chamber 11. Through the setting of the protective cover 23, on the one hand, it is not easy for the sample to contact with the heating tube 21 or the negative pressure fan 22, thereby providing protection for the drying mechanism 2, and on the other hand, it can improve the uniformity of the air outlet, and it is not easy for the air outlet to be too large, thereby causing the sample to be separated from the weighing mechanism 3, thereby improving the accuracy of the test.
[0039] Reference Figure 3 , Figure 4 and Figure 5 The cabinet 1 is also provided with an air outlet duct 14 corresponding to the drying chamber 11, and the air outlet duct 14 is connected to the drying chamber 11. The end of the air outlet duct 14 away from the drying chamber 11 passes through the cabinet 1. Through the setting of the air outlet duct 14, air circulation in the drying chamber 11 is set to improve the safety during the drying process; the cabinet 1 is provided with a cover shell 4, and the cover shell 4 protrudes in the direction away from the cabinet 1 to form an air storage chamber. A plurality of air vents 42 connected to the air storage chamber are opened on the cover shell 4, and the plurality of air vents 42 are arranged in a circular array with the axis of the cover shell 4 as the center. A closing piece 43 is rotatably connected to the cover shell 4, and the shape of the closing piece 43 is adapted to the air vent 42. The overlapping area of the air vent 42 and the closing piece 43 can be controlled by rotating the closing piece 43, thereby controlling the flow rate of the outlet air. A rotating shaft 44 is coaxially provided on the cover shell 4, and the closing plate 43 rotates around the rotating shaft 44. A control plate 431 is provided on the closing plate 43. A control groove 41 for the control plate 431 to slide is penetrated on the side wall of the cover shell 4, and an air outlet hole 441 connected to the air storage chamber is penetrated on the rotating shaft 44.
[0040] In the initial stage of the test, the closing plate 43 can be controlled by the control plate 431 to rotate until it is completely overlapped with the vent hole 42, and the gas in the drying chamber 11 can only be discharged from the drying chamber 11 through the air outlet 441, thereby increasing the speed of heating in the drying chamber 11, shortening the experimental process and saving energy to a certain extent; after the temperature in the drying chamber 11 is stabilized, the closing plate 43 is controlled to rotate until the vent hole 42 is connected to the outside world, thereby expanding the exhaust flow rate and improving the safety during the test.
[0041] Reference Figure 2 and Figure 3A single drying chamber 11 is used in conjunction with a plurality of weighing mechanisms 3. In the embodiment of the present application, a single drying chamber 11 is provided with two weighing mechanisms 3. Then, moisture test can be performed on two samples of the same batch at the same time under the same drying environment, thereby improving the accuracy of the test.
[0042] Reference Figure 6 and Figure 7 The weighing mechanism 3 includes a placement column 31, a pressure sensor 32, a weighing instrument 33, a tray 34 and a supporting column 35. The cabinet 1 is provided with a receiving chamber 15 corresponding to the drying chamber 11. The opening of the receiving chamber 15 is opposite to the opening of the drying chamber 11. The placement column 31, the pressure sensor 32 and the weighing instrument 33 are located in the receiving chamber 15. The tray 34 and the supporting part are located in the drying chamber 11. The pressure sensor 32 is electrically connected to the weighing instrument 33. The placement column 31 is arranged on the pressure sensor 32. A heightening block 36 is arranged between the placement column 31 and the pressure sensor 32. In the embodiment of the present application, the heightening block 36 is made of bakelite so that the heightening block 36 is not easily damaged by heat. The placement column 31 and the pressure sensor 32 are fixed to the heightening block 36 by bolts. There is a gap between the end of the placement column 31 away from the pressure sensor 32 and the inner wall of the receiving chamber 15.
[0043] Reference Figure 7 The placement column 31 is provided with an embedding groove 311 for the supporting column 35 to be embedded. The supporting column 35 includes a first column 351 and a second column 352 which are coaxially arranged. The diameter of the second column 352 is larger than that of the first column 351. A connecting pipe 112 which cooperates with the supporting column 35 is fixedly provided on the bottom wall of the drying chamber 11. The outer diameter of the first column 351 is adapted to the inner diameter of the embedding groove 311 and the inner diameter of the connecting pipe 112. The first column 351 is embedded in the embedding groove 311 after passing through the connecting pipe 112. The tray 34 is used to place samples. The end face of the second column 352 away from the first column 351 is in contact with the tray 34, so that it can cooperate with the pressure sensor 32 and the weighing instrument 33 to weigh the samples placed on the tray 34.
[0044] Reference Figure 1 and Figure 2 A control button 5 corresponding to the drying chamber 11 is provided on the cabinet 1. The control button 5 includes an operation key 51 and two reset keys 52. The two reset keys 52 are electrically connected to the two weighing mechanisms 3 respectively and are used to clear the data of the weighing instrument 33. The operation key 51 is used to control the operation of the drying mechanism 2 for easy operation.
[0045] Reference Figure 2 and Figure 3The cabinet 1 is provided with an operation indicator light 6 corresponding to the drying chamber 11. The cabinet 1 is also provided with a door switch 7 that cooperates with the cabinet door 12. The door switch 7 is electrically connected to the operation indicator light 6. Under the cooperation of the door switch 7 and the operation indicator light 6, if the corresponding cabinet door 12 is opened during the operation of the drying mechanism 2, the operation indicator light 6 flashes, thereby improving the safety of the test. A temperature sensor 8 is fixedly provided on the inner wall of the drying chamber 11. The temperature sensor 8 is used to detect the temperature in the drying chamber 11. The temperature sensor 8 can also be electrically connected to the operation indicator light 6. If the temperature in the drying chamber 11 is too high or the temperature remains low within a certain time range, the flashing of the operation indicator light 6 can be used to remind the tester, thereby improving the safety of the test.
[0046] The implementation principle of a multi-station moisture tester in an embodiment of the present application is as follows: after placing the sample into the tray 34, the sample is placed into the drying chamber 11 with the cooperation of the supporting column 35, the connecting tube 112 and the placement column 31, and the sample is weighed with the cooperation of the placement column 31, the pressure sensor 32 and the weighing instrument 33. The cabinet door 12 is closed, and the dryer is started by the operation key 51. At the initial stage of the test, the closing plate 43 can be controlled by the control plate 431 to rotate to completely overlap with the vent 42. After the temperature in the drying chamber 11 stabilizes, the closing plate 43 is controlled to rotate to connect the vent 42 to the outside world. The value of the weighing instrument 33 after it tends to stabilize is the mass of the sample after drying.
[0047] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A multi-station moisture tester for testing the moisture content in a sample, characterized in that: The invention comprises a cabinet (1), wherein the cabinet (1) is provided with a plurality of drying chambers (11), wherein the plurality of drying chambers (11) are arranged in sequence along the height direction of the cabinet (1), wherein a cabinet door (12) for controlling the opening and closing of the drying chamber (11) is rotatably connected to the cabinet (1), wherein a drying mechanism (2) is provided on a side wall of the drying chamber (11) away from the cabinet door (12), wherein the drying mechanism (2) is used for drying a sample located in the drying chamber (11), and wherein the cabinet (1) is further provided with a weighing mechanism (3) corresponding to the drying chamber (11), wherein the weighing mechanism (3) is used for reflecting the mass of the sample located in the drying chamber (11).
2. The multi-station moisture tester according to claim 1, characterized in that: The drying mechanism (2) comprises a heating tube (21) and a negative pressure fan (22); the heating tube (21) is arranged in a spiral shape; a gasket (211) connected to the inner wall of a drying chamber (11) is provided on the heating tube (21); the negative pressure fan (22) is located in the middle of the heating tube (21); the negative pressure fan (22) is connected to the inner wall of the drying chamber (11); an air inlet (13) corresponding to the negative pressure fan (22) is provided on the cabinet (1); the air inlet (13) is communicated with the drying chamber (11); and a heat insulation pad (212) is provided between the heating tube (21) and the inner wall of the drying chamber (11).
3. The multi-station moisture tester according to claim 2, characterized in that: The cabinet (1) is also provided with an air outlet pipe (14) corresponding to the drying chamber (11), the air outlet pipe (14) is in communication with the drying chamber (11), and one end of the air outlet pipe (14) away from the drying chamber (11) passes through the cabinet (1); The cabinet (1) is provided with a cover shell (4), the cover shell (4) protrudes in a direction away from the cabinet (1) to form an air storage cavity, the cover shell (4) is provided with a plurality of ventilation holes (42) connected to the air storage cavity, the cover shell (4) is rotatably connected with a closing plate (43), the shape of the closing plate (43) is adapted to the ventilation hole (42), and the overlapping area of the ventilation hole (42) and the closing plate (43) can be controlled by rotating the closing plate (43), the cover shell (4) is coaxially provided with a rotating shaft (44), the closing plate (43) rotates with the rotating shaft (44) as the rotating shaft (44), the closing plate (43) is provided with a control plate (431), the cover shell (4) is provided with a control groove (41) for the control plate (431) to slide, and the rotating shaft (44) is provided with an air outlet hole (441) connected to the air storage cavity.
4. The multi-station moisture tester according to claim 1, characterized in that: The weighing mechanism (3) comprises a placement column (31), a pressure sensor (32), a weighing instrument (33), a tray (34) and a supporting column (35). The pressure sensor (32) is electrically connected to the weighing instrument (33). The placement column (31) is arranged on the pressure sensor (32). An engaging groove (311) for engaging the supporting column (35) is provided on the placement column (31). A connecting pipe (112) for engaging with the supporting column (35) is connected to the bottom wall of the drying chamber (11). The supporting column (35) passes through the connecting pipe (112) and is then embedded in the engaging groove (311). The tray (34) is used for placing samples. One end of the supporting column (35) away from the placement column (31) is in contact with the tray (34).
5. The multi-station moisture tester according to claim 2, characterized in that: A single drying chamber (11) cooperates with a plurality of weighing mechanisms (3).
6. The multi-station moisture tester according to claim 1, characterized in that: The cabinet (1) is provided with an operation indicator light (6) corresponding to the drying chamber (11), and the cabinet (1) is also provided with a door switch (7) matched with the cabinet door (12), and the door switch (7) is electrically connected to the operation indicator light (6).
7. The multi-station moisture tester according to claim 6, characterized in that: A temperature sensor (8) is provided on the inner wall of the drying chamber (11), and the temperature sensor (8) is used to detect the temperature inside the drying chamber (11).
8. The multi-station moisture tester according to claim 1, characterized in that: A sealing ring (111) is connected to the inner wall of the opening of the drying chamber (11), and when the drying chamber (11) is closed, the cabinet door (12) is tightly pressed against the sealing ring (111).