Coal total moisture measuring device on weighing coal feeder

Abstract

The utility model relates to the technical field of coal total moisture measurement, in particular to a coal total moisture measuring device on a weighing coal feeder, which comprises a heating furnace and a sample bottle arranged in the heating furnace. A material opening is formed in the middle of the upper end of the heating furnace, a sealing cover covers the upper end of the material opening, a supporting plate is arranged below the sealing cover, two pull rods distributed left and right are fixed between the supporting plate and the sealing cover, and a positioning inserting opening is formed in the middle of the supporting plate. The sample bottle can be safely and conveniently moved out of the heating furnace to be cooled, the risk of scalding is avoided, the problem that the sample bottle cannot be covered in time is effectively solved, external air or impurities can be prevented from entering the sample bottle, and the sample bottle can be accurately weighed through a metering scale.

Description

TECHNICAL FIELD

[0001] The utility model relates to coal total moisture measurement technical field especially is related to a kind of total moisture measuring device on weighing coal feeder upper coal. BACKGROUND

[0002] Before using coal, the total moisture and other indexes of coal must be determined. The total moisture refers to the sum of external moisture and internal moisture. In order to avoid the loss of coal powder moisture during sample preparation and cause inaccurate measurement results, the total moisture determination process must be placed after the first sample preparation during the development of automatic coal testing equipment.

[0003] In the prior art, the coal in the sample bottle is heated, and the moisture in the coal is separated in the form of steam, and then the weight of the sample bottle is taken to judge the moisture content. However, during this process, when the sample bottle is taken out for weighing, the open sample bottle is exposed to the air. Not only other impurities can easily enter the sample bottle, but also moisture in the air can easily re-enter the sample bottle and come into contact with the coal, thereby affecting the measurement accuracy of the total moisture of coal. Even if some staff manually cover the bottle cap on the sample bottle, the sample bottle is still hot when it is taken out, and the staff cannot immediately cover the bottle cap on the sample bottle. Moreover, the staff manually covering the bottle cap on the sample bottle has the risk of scalding. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of total moisture measuring device on weighing coal feeder upper coal, it is beneficial to guarantee the measurement accuracy of the total moisture of coal, and it is beneficial to avoid scalding risk etc.

[0005] To solve the problems in the prior art, the utility model discloses a kind of total moisture measuring device on weighing coal feeder upper coal, including heating furnace and sample bottle, the sample bottle is located in heating furnace;

[0006] The left side of the heating furnace is provided with a nitrogen tank, a gas delivery valve is communicated between the nitrogen tank and the heating furnace, a charging port is opened in the middle of the upper end of the heating furnace, a sealing cover is covered on the upper end of the charging port, a support plate is provided below the sealing cover, two pull rods are fixed between the support plate and the sealing cover and distributed left and right, a positioning socket is opened in the middle of the support plate, the sample bottle is inserted into the positioning socket, and an annular support plate is fixedly sleeved around the sample bottle, the support plate is supported at the lower end of the annular support plate, a bottle cap is provided above the sample bottle, and a first lifting assembly is provided above the bottle cap.

[0007] The upper right end of the heating furnace is communicated with a moisture collection pipe, a mesh cylinder is provided in the moisture collection pipe, a water absorbing agent is contained in the mesh cylinder, a metering scale is installed at the upper left end of the heating furnace, and a second lifting assembly is provided above the heating furnace.

[0008] Further, the first lifting assembly comprises a cylinder, a lifting plate and a lifting rod, the cylinder is fixed to the upper end of the sealing cover, the lifting plate is connected to the power end of the cylinder, the lifting rod is fixed to the lower end of the lifting plate and slides through the lower surface of the sealing cover, and a sealing ring is arranged at the connection between the lifting rod and the sealing cover.

[0009] Further, a butt joint groove is formed in the middle of the upper end of the bottle cap, an electromagnet is fixed to the inner bottom of the butt joint groove, a magnetic attraction butt joint block is fixed to the lower end of the lifting plate, the magnetic attraction butt joint block is butted in the butt joint groove, and the electromagnet is attracted to the magnetic attraction butt joint block through magnetic force.

[0010] Further, the second lifting assembly comprises an L-shaped guide rod, a reversible motor, a lead screw and a guide plate, two L-shaped guide rods are arranged on the upper end of the heating furnace, the reversible motor is fixed to the inner top end of one of the L-shaped guide rods, one end of the lead screw is connected to the power end of the reversible motor, and the other end of the lead screw is rotatably connected to the upper end of the heating furnace.

[0011] Further, the guide plate comprises two guide plates, the two guide plates are slidably connected to the periphery of the two L-shaped guide rods, one of the guide plates is threadedly connected to the periphery of the lead screw, and the upper end of the sealing cover is fixed to the lower end of the guide plate.

[0012] Further, a sealing plug is arranged on the pipe opening of the water collecting pipe, and a fixing rod is fixed between the sealing plug and the mesh cylinder.

[0013] Compared with the prior art, the present application has the following beneficial effects:

[0014] 1. The coal is placed in the sample bottle, the heating furnace is filled with nitrogen, and then the coal in the sample bottle is heated by the heating furnace, so that the water in the coal is quickly treated and cleaned.

[0015] 2. The first lifting assembly is used to safely and conveniently cover the sample bottle with the bottle cap, and the second lifting assembly is used to safely and conveniently remove the sample bottle from the heating furnace for cooling, so that the risk of scalding is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The present application is a whole structure schematic diagram.

[0017] Figure 2 The utility model discloses a sample bottle structure schematic view;

[0018] Figure 3 The utility model discloses a bottle cap structure schematic view;

[0019] Figure 4 The utility model discloses a sample bottle takes out work schematic view;

[0020] Figure 5 The utility model discloses a sample bottle weighing work schematic view;

[0021] Figure 6 The utility model discloses a whole external structure schematic view.

[0022] Figures 1-6 Middle: heating furnace 1, nitrogen tank 2, gas valve 3, support plate 4, sample bottle 5, material mouth 6, sealing cover 7, pull rod 8, metering scale 9, air cylinder 10, lifting plate 11, lifting rod 12, bottle cap 13, annular support plate 14, butt joint groove 15, electromagnet 16, magnetic suction butt joint block 17, moisture collection pipe 18, mesh cylinder 19, fixed rod 20, sealing plug 21, L type guide rod 22, positive and negative motor 23, screw rod 24, guide plate 25, positioning socket 26. Specific implementation

[0023] A kind of weighing coal feeder coal total moisture measuring device:

[0024] As Figure 1 , 2 As shown in the present embodiment, including heating furnace 1 and sample bottle 5, the sample bottle 5 is located in heating furnace 1, the left side of the heating furnace 1 is equipped with nitrogen tank 2, the nitrogen tank 2 is communicated with the heating furnace 1 between gas valve 3, the upper end of the heating furnace 1 is opened in the middle and is equipped with material mouth 6, the upper end of the material mouth 6 is covered with sealing cover 7, the sealing cover 7 below is equipped with support plate 4, the support plate 4 and sealing cover 7 between fixed two left and right distribution pull rod 8, the middle of the support plate 4 is opened and is equipped with positioning socket 26, the sample bottle 5 is inserted in positioning socket 26, and the sample bottle 5 periphery is fixedly sleeved with annular support plate 14, and the support plate 4 is supported in the lower end of annular support plate 14.

[0025] When measuring the moisture content in coal using this device, the coal is placed in sample bottle 5, and the sample bottle 5 containing coal is lifted and weighed by weighing scale 9. The sample bottle 5 containing coal is located in heating furnace 1, with sealing cap 7 covering the feed port 6. The coal in sample bottle 5 is heated by heating furnace 1, and the temperature in heating furnace 1 is controlled at 105-110℃. At the same time, nitrogen from nitrogen tank 2 is introduced into heating furnace 1 through the operation of gas supply valve 3. The nitrogen comes into contact with the coal in sample bottle 5, and the rapid flow of nitrogen can break the gas-liquid balance on the surface of the coal sample, accelerating the evaporation rate of the liquid, thereby achieving the purpose of coal sample concentration. Therefore, it is beneficial to accelerate the evaporation rate of moisture in coal. The moisture is absorbed by the water absorbent in mesh cylinder 19, thus facilitating the rapid removal of moisture from the coal.

[0026] like Figures 3-6 As shown, in this embodiment, a bottle cap 13 is provided above the sample bottle 5, and a first lifting assembly is provided above the bottle cap 13. The first lifting assembly includes a cylinder 10, a lifting plate 11, and a lifting rod 12. The cylinder 10 is fixed to the upper end of the sealing cap 7, the lifting plate 11 is connected to the power end of the cylinder 10, and the lifting rod 12 is fixed to the lower end of the lifting plate 11 and slides through the bottom of the sealing cap 7. A sealing ring is provided at the connection between the lifting rod 12 and the sealing cap 7. A docking groove 15 is opened in the middle of the upper end of the bottle cap 13, and an electromagnet 16 is fixed at the bottom end of the docking groove 15. A magnetic docking block 17 is fixed at the lower end of the lifting plate 11, and the magnetic docking block 17 docks in the docking groove 15. The electromagnet 16 is attracted to the magnetic docking block 17 by magnetic force. A moisture collection pipe 1 is connected to the upper right end of the heating furnace 1. 8. A mesh tube 19 is provided inside the moisture collection pipe 18. The mesh tube 19 is filled with a water absorbent. A weighing scale 9 is installed at the upper left end of the heating furnace 1. A second lifting assembly is provided above the heating furnace 1. The second lifting assembly includes an L-shaped guide rod 22, a forward and reverse motor 23, a lead screw 24, and a guide plate 25. There are two L-shaped guide rods 22, which are distributed on the left and right and fixed to the upper end of the heating furnace 1. The forward and reverse motor 23 is fixed to the top end of one of the L-shaped guide rods 22. One end of the lead screw 24 is connected to the power end of the forward and reverse motor 23, and the other end of the lead screw 24 is rotatably connected to the upper end of the heating furnace 1. There are two guide plates 25, and the two guide plates 25 are slidably sleeved around the two L-shaped guide rods 22. One of the guide plates 25 is threaded around the lead screw 24. The upper end of the sealing cover 7 is fixed to the lower end of the guide plate 25.

[0027] When the coal moisture in the sample bottle 5 is heated and volatilized, the contraction of the air cylinder 10 drives the lifting plate 11, the lifting rod 12, the magnetic suction butt joint block 17, the electromagnet 16 and the bottle cap 13 to move downward until the bottle cap 13 covers the sample bottle 5, then the positive and negative motor 23 drives the lead screw 24 to rotate, which drives the guide plate 25 to slide upward along the L-shaped guide rod 22, and the guide plate 25 drives the sealing cap 7, the pull rod 8, the support plate 4, the annular support plate 14, the sample bottle 5 and the first lifting assembly to move upward until the sample bottle 5 moves out of the heating furnace 1. Through the working of the first lifting assembly, the bottle cap 13 can safely and conveniently cover the sample bottle 5. Under the premise that the coal moisture in the sample bottle 5 is volatilized, the second lifting assembly can safely and conveniently move the sample bottle 5 out of the heating furnace 1 for cooling, avoiding the risk of scalding. Since the sample bottle 5 is covered by the bottle cap 13 before moving out of the heating furnace 1, the situation that the sample bottle 5 cannot be covered in time is effectively solved, so as to avoid the external air or impurities entering the sample bottle 5.

[0028] As shown in Figure 3 , 5 , in this embodiment, the lifting plate 11 is connected to the power end of the air cylinder 10, the lifting rod 12 is fixed to the lower end of the lifting plate 11 and slides through the lower surface of the sealing cap 7, a sealing ring is arranged at the connection between the lifting rod 12 and the sealing cap 7, a butt joint groove 15 is formed in the upper middle part of the bottle cap 13, an electromagnet 16 is fixed to the inner bottom end of the butt joint groove 15, a magnetic suction butt joint block 17 is fixed to the lower end of the lifting plate 11 and is connected to the butt joint groove 15, and the electromagnet 16 is attracted to the magnetic suction butt joint block 17 by magnetic force.

[0029] When the sample bottle 5 is moved out of the heating furnace 1 for cooling, the electromagnet 16 is powered off, the electromagnet 16 no longer attracts the magnetic suction butt joint block 17 by magnetic force, so the lifting plate 11, the lifting rod 12 and the magnetic suction butt joint block 17 are driven to move upward by the extension of the air cylinder 10, the magnetic suction butt joint block 17 moves out of the butt joint groove 15, and then the sample bottle 5 is pulled upward to move out of the positioning socket 26. At this time, the bottle cap 13 is placed on the metering scale 9 together with the sample bottle 5, so as to accurately weigh the sample bottle 5 by the metering scale 9. After deducting the weight of the bottle cap 13, the weight difference before and after heating of the sample bottle 5 is compared, so as to accurately measure the amount of moisture contained in the coal.

[0030] As shown in Figure 5 , in this embodiment, a sealing plug 21 is arranged on the pipe opening of the moisture collection pipe 18, and a fixed rod 20 is fixed between the sealing plug 21 and the mesh cylinder 19.

[0031] By pulling the sealing plug 21 upwards, the fixed rod 20 and the mesh cylinder 19 are moved out of the moisture collecting pipe 18 by the sealing plug 21, so as to facilitate replacement of the water absorbing agent in the mesh cylinder 19.

Claims

1. A device for measuring the total moisture content of coal fed by a weighing coal feeder, comprising a heating furnace (1) and a sample bottle (5), wherein the sample bottle (5) is disposed inside the heating furnace (1), characterized in that: A nitrogen tank (2) is provided on the left side of the heating furnace (1). A gas supply valve (3) is connected between the nitrogen tank (2) and the heating furnace (1). A material port (6) is opened in the middle of the upper end of the heating furnace (1). A sealing cap (7) is covered on the upper end of the material port (6). A support plate (4) is provided below the sealing cap (7). Two pull rods (8) are fixed between the support plate (4) and the sealing cap (7) and are distributed on the left and right. A positioning socket (26) is opened in the middle of the support plate (4). The sample bottle (5) is inserted into the positioning socket (26). An annular support plate (14) is fixedly sleeved around the sample bottle (5). The support plate (4) is supported on the lower end of the annular support plate (14). A bottle cap (13) is provided above the sample bottle (5). A first lifting component is provided above the bottle cap (13). The upper right end of the heating furnace (1) is connected to a moisture collection pipe (18), and a mesh cylinder (19) is provided inside the moisture collection pipe (18). The mesh cylinder (19) is filled with a water absorbent. A weighing scale (9) is installed at the upper left end of the heating furnace (1), and a second lifting assembly is provided above the heating furnace (1).

2. The coal moisture measuring device for a weighing feeder according to claim 1, characterized in that: The first lifting assembly includes a cylinder (10), a lifting plate (11), and a lifting rod (12). The cylinder (10) is fixed to the upper end of the sealing cover (7). The lifting plate (11) is connected to the power end of the cylinder (10). The lifting rod (12) is fixed to the lower end of the lifting plate (11) and slides through the bottom of the sealing cover (7). A sealing ring is provided at the connection between the lifting rod (12) and the sealing cover (7).

3. The coal moisture measuring device for a weighing feeder according to claim 2, characterized in that: The bottle cap (13) has a docking groove (15) in the middle of its upper end. An electromagnet (16) is fixed at the bottom of the docking groove (15). A magnetic docking block (17) is fixed at the lower end of the lifting plate (11). The magnetic docking block (17) docks with the docking groove (15). The electromagnet (16) is attracted to the magnetic docking block (17) by magnetic force.

4. The coal moisture measuring device for a weighing feeder according to claim 1, characterized in that: The second lifting assembly includes an L-shaped guide rod (22), a forward and reverse motor (23), a lead screw (24), and a guide plate (25). There are two L-shaped guide rods (22) that are distributed on the left and right and fixed to the upper end of the heating furnace (1). The forward and reverse motor (23) is fixed to the top of one of the L-shaped guide rods (22). One end of the lead screw (24) is connected to the power end of the forward and reverse motor (23), and the other end of the lead screw (24) is rotatably connected to the upper end of the heating furnace (1).

5. The coal moisture measuring device for a weighing feeder according to claim 4, characterized in that: The guide plate (25) is provided in two pieces, and the two guide plates (25) are slidably sleeved around the two L-shaped guide rods (22). One of the guide plates (25) is threaded around the lead screw (24), and the upper end of the sealing cover (7) is fixed to the lower end of the guide plate (25).

6. The coal moisture measuring device for a weighing feeder according to claim 1, characterized in that: The opening of the water collection pipe (18) is covered with a sealing plug (21), and a fixing rod (20) is fixed between the sealing plug (21) and the mesh cylinder (19).

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