A coal blending monitoring device

Abstract

The present invention relates to the field of raw coal bunker monitoring technology, and in particular to a coal blending monitoring device, which includes a bracket and a monitoring component. The bracket includes a box body, and the monitoring component includes a laser scanner and an infrared thermal imager. By combining the laser scanner and the infrared thermal imager, accurate monitoring of the coal quality and storage amount in the raw coal bunker is achieved. The liftable design of the infrared thermal imager effectively avoids damage to the equipment by coal ash, extends the service life of the equipment, and can be quickly deployed for detection when needed, thereby improving the work efficiency of the system. In addition, the laser scanner can perform real-time three-dimensional scanning of the volume of the coal pile, and combined with software analysis, it provides more accurate coal quantity data, which helps to improve the accuracy and safety of coal management, and avoid potential safety hazards such as spontaneous combustion and blockage of the coal bunker.

Description

Technical Field

[0001] The invention relates to the technical field of raw coal bunker monitoring, in particular to a coal blending monitoring device. Background Art

[0002] In recent years, with the rapid growth of installed capacity of new energy, the peak load demand of power system has been increasing. As an important and economical regulating power source in my country's power system, coal-fired power has played a key role in balancing the volatility of new energy power generation and providing stable power support. Traditional raw coal bunker designs are mostly hyperbolic shells or shrimp-curved coal hoppers. Although they perform well under certain types of coal, it is difficult to accurately monitor changes in coal quality and quantity when faced with complex and changeable coal characteristics, which can easily lead to safety hazards such as coal bunker blockage and spontaneous combustion during operation. Improvements are urgently needed to meet the efficient management needs of modern power plants. Summary of the invention

[0003] In view of the above problems existing in the prior art, the present invention is proposed.

[0004] Therefore, the problem to be solved by the present invention is to improve the accurate detection of the coal quality change dynamics and the coal storage amount in the coal bunker, so as to prevent safety hazards and optimize coal management.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions: a coal blending monitoring device, which includes a bracket, which is arranged above the raw coal bin, and a box body, which is arranged below the bracket; a monitoring component, including a laser scanner and an infrared thermal imager, the laser scanner is arranged on the bracket, and the infrared thermal imager is arranged in the box body.

[0006] As a preferred solution of the coal blending monitoring device described in the present invention, wherein: the box body is provided with a baffle, a moving block, a first column slot, a second column slot, a third column slot, a first side slot, a second side slot, a third side slot, a guide rod, and an unlocking rod; the first column slot, the second column slot, and the third column slot are coaxially arranged in the middle of the box body from top to bottom; the third column slot runs through the bottom of the box body; the first side slot is arranged on the side wall of the first column slot, the second side slot is arranged on the side wall of the second column slot, and the third side slot is arranged on the side wall of the third column slot; the guide rod and the unlocking rod are arranged on the end face of the first column slot; the baffle is slidably matched with the third side slot; and the moving block is slidably matched with the second side slot;

[0007] The moving block is provided with a first spring, and the first spring is arranged on the moving block and slidingly cooperates with the second side groove.

[0008] As a preferred solution of the coal blending monitoring device described in the present invention, the box body is also provided with a lifting part, including a buffer block, a first movable cylinder, a second movable cylinder, the buffer block slidingly cooperates with the first side groove, the first movable cylinder slidingly cooperates with the first column groove, the outer wall of the second movable cylinder slidingly cooperates with the first movable cylinder, and the inner wall of the second movable cylinder slidingly cooperates with the guide rod.

[0009] As a preferred solution of the coal blending monitoring device described in the present invention, the infrared thermal imager is provided with a cylinder, a block, and a limit ring, the block is slidably matched with the side wall of the cylinder, the limit ring is arranged on the side wall of the cylinder, the cylinder is slidably matched with the second column groove, and the limit ring is slidably matched with the third column groove.

[0010] As a preferred solution of the coal blending monitoring device described in the present invention, the baffle includes a baffle sleeve, a second spring, and a telescopic block, the second spring is arranged between the baffle sleeve and the end face of the third side groove, and the telescopic block is slidably matched with the baffle sleeve.

[0011] As a preferred solution of the coal blending monitoring device described in the present invention, wherein: the baffle sleeve is provided with a hole, the hole passes through the end of the baffle sleeve, and the length of the lower end plate of the baffle sleeve is shorter than the length of the upper end plate; the telescopic block is provided with a first inclined surface, a second inclined surface, and a third spring, the first inclined surface is arranged above the telescopic block, the second inclined surface is arranged below the telescopic block, and the third spring passes through the hole and is arranged between the telescopic block and the end surface of the third side groove.

[0012] As a preferred solution of the coal blending monitoring device described in the present invention, the buffer block is provided with a fourth spring, a third inclined plane, and a fourth inclined plane, the fourth spring is arranged between the buffer block and the end face of the first side groove, the third inclined plane is arranged above the buffer block, and the fourth inclined plane is arranged below the buffer block.

[0013] As a preferred solution of the coal blending monitoring device described in the present invention, the first movable cylinder is provided with an end plate, a rod groove, a straight groove, a guide groove, a first connecting rod, a top block, and a notch; the end plate is arranged at the upper end of the first movable cylinder; the rod groove is arranged at the end of the first movable cylinder and matches the unlocking rod; the straight groove is arranged on the side wall of the first movable cylinder; the guide groove is arranged on the inner wall of the first movable cylinder; one end of the first connecting rod is hinged to the upper end of the straight groove; the notch is arranged on the inner wall of the first movable cylinder and is communicated with the rod groove; the top block is slidably matched with the notch.

[0014] As a preferred solution of the coal blending monitoring device of the present invention, a fifth inclined surface is provided at one end of the top block.

[0015] As a preferred solution of the coal blending monitoring device described in the present invention, the second movable cylinder is provided with a fifth spring, a slider, a side hole, a locking block, and a second connecting rod. The fifth spring is provided between the second movable cylinder and the end face of the end plate. The slider is provided on the side wall of the second movable cylinder and slidingly cooperates with the guide groove. The side hole is provided on the side wall of the second movable cylinder. The locking block slidingly cooperates with the side hole. One end of the second connecting rod is hinged to the side wall of the second movable cylinder, and the other end is hinged to an end of the first connecting rod away from the straight groove.

[0016] The beneficial effects of the present invention are as follows: by combining the laser scanner and the infrared thermal imager, accurate monitoring of the coal quality and the amount of coal stored in the raw coal bunker is achieved. The liftable design of the infrared thermal imager effectively avoids damage to the equipment by coal ash, prolongs the service life of the equipment, and can be quickly deployed for detection when needed, thereby improving the working efficiency of the system. In addition, the laser scanner can perform real-time three-dimensional scanning of the volume of the coal pile, and combined with software analysis, it provides more accurate coal quantity data, which helps to improve the accuracy and safety of coal management and avoid potential safety hazards such as spontaneous combustion and blockage of the coal bunker. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0018] Figure 1 This is a scene diagram of the coal blending monitoring device.

[0019] Figure 2 This is a box diagram of the coal blending monitoring device.

[0020] Figure 3 This is a diagram of the internal structure of the box of the coal blending monitoring device.

[0021] Figure 4 This is a cross-sectional view of the box of the coal blending monitoring device.

[0022] Figure 5 This is a cross-sectional view from another angle of the box body of the coal blending monitoring device.

[0023] Figure 6 This is the structural diagram of the infrared thermal imager of the coal blending monitoring device.

[0024] Figure 7 This is a cross-sectional view of the infrared thermal imager of the coal blending monitoring device.

[0025] Figure 8 This is a structural diagram of the lifting parts of the coal blending monitoring device.

[0026] Fig. 9 This is a cross-sectional view of the lifting parts of the coal blending monitoring device.

[0027] Fig.10 This is the exploded view of the baffle of the coal-combustion monitoring device.

[0028] Fig.11 This is a cross-sectional view of the box and infrared thermal imager of the coal blending monitoring device.

[0029] Fig.12 This is a cross-sectional view from another perspective of the box body and infrared thermal imager of the coal blending monitoring device. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor is it an embodiment that is mutually exclusive with other embodiments, either individually or selectively.

[0033] Example 1, reference Figure 1 and Figure 2 , which is the first embodiment of the present invention, provides a coal blending combustion monitoring device, which includes a bracket 100 and a monitoring component 200.

[0034] Specifically, the support 100 is arranged above the raw coal bin, and includes a box body 101 arranged below the support 100;

[0035] The monitoring component 200 includes a laser scanner 201 and an infrared thermal imager 202. The laser scanner 201 is disposed on the bracket 100, and the infrared thermal imager 202 is disposed in the box body 101;

[0036] In the initial state, the infrared thermal imager is located in the box body 101 to prevent dust in the coal bunker from covering the mirror surface, causing the thermal imager to malfunction and inaccurate measurement.

[0037] When in use, the laser scanner 201 performs a three-dimensional dynamic laser scan of the volume of the coal pile, and calculates the actual amount of coal through software analysis; it is worth noting that the laser scanner 201 can move on the track of the bracket 100 to ensure the integrity of the scanning surface; when the coal bunker is in operation, a periodic scan is performed at a set time (30 minutes), and the results are transmitted to the data processing terminal for operation analysis; when the coal bunker is shut down, the infrared thermal imager extends out of the shell 101 and starts working for a set time (2 hours) to perform periodic scans, and the results are transmitted to the data processing terminal for operation analysis; the temperature changes and the position of the gaps in the coal pile are recorded and analyzed. This technology uses laser scanning equipment and infrared thermal imagers to monitor the coal quality changes, temperature changes, coal quantity, holes in the coal bunker, large coal blocks, ice blocks, etc. in real time, providing technical support for coal blending and combustion, and also has significant advantages in improving boiler efficiency and environmental protection performance, ensuring the safety and economy of the unit.

[0038] Example 2, reference Figures 2 to 12 , which is the second embodiment of the present invention, and this embodiment is based on the previous embodiment.

[0039] Specifically, the box body 101 is provided with a baffle 102, a moving block 103, a first column groove 101a, a second column groove 101b, a third column groove 101c, a first side groove 101d, a second side groove 101e, a third side groove 101f, a guide rod 101g, and an unlocking rod 101h. The first column groove 101a, the second column groove 101b, and the third column groove 101c are coaxially arranged in the middle of the box body 101 from top to bottom, the third column groove 101c runs through the bottom of the box body 101, and the first side groove 101d is arranged in the first column groove. The first side groove 101a is provided on the side wall of the second column groove 101b, the second side groove 101e is provided on the side wall of the third column groove 101c, the guide rod 101g and the unlocking rod 101h are provided on the end surface of the first column groove 101a, the baffle plate 102 is slidably matched with the third side groove 101f, and the moving block 103 is slidably matched with the second side groove 101e; the moving block 103 is provided with a first spring 103a, and the first spring 103a is provided on the moving block 103 and the second side groove 101e.

[0040] The baffle 102 is used to prevent dust from entering the housing, and to fix and support the infrared thermal imager 202 when the infrared thermal imager 202 is working.

[0041] Specifically, the box body 101 is further provided with a lifting member 300, including a buffer block 301, a first moving cylinder 302, a second moving cylinder 303, the buffer block 301 is slidably matched with the first side groove 101d, the first moving cylinder 302 is slidably matched with the first column groove 101a, the outer wall of the second moving cylinder 303 is slidably matched with the first moving cylinder 302, and the inner wall of the second moving cylinder 303 is slidably matched with the guide rod 101g;

[0042] The lifting member 300 can fix the infrared thermal imager 202 in the initial state, and can drive the infrared thermal imager 202 to rise and fall, ensuring that the infrared thermal imager 202 is outside the box body 101 when working;

[0043] Specifically, the infrared thermal imager 202 is provided with a barrel 202a, a block 202b, and a limit ring 202c, the block 202b is slidably matched with the side wall of the barrel 202a, the limit ring 202c is arranged on the side wall of the barrel 202a, the barrel 202a is slidably matched with the second column groove 101b, and the limit ring 202c is slidably matched with the third column groove 101c;

[0044] It is worth mentioning that a spring is arranged between the block 202b and the cylinder 202a. In the initial state, the block 202b does not extend to the outer wall of the cylinder 202a. When connected, the block 202b cooperates with the lifting member 300 and the moving block 103 to fix the infrared thermal imager 202. When working, the infrared thermal imager 202 extends out of the box body. At this time, the limit ring 202c and the baffle 102 complete the fixation of the infrared thermal imager 202.

[0045] Specifically, the baffle 102 includes a baffle sleeve 102a, a second spring 102b, and a telescopic block 102c. The second spring 102b is disposed between the baffle sleeve 102a and an end surface of the third side groove 101f. The telescopic block 102c is slidably matched with the baffle sleeve 102a.

[0046] Specifically, the stopper sleeve 102a is provided with a hole 102d, and the hole 102d passes through the end of the stopper sleeve 102a, and the length of the lower end plate of the stopper sleeve 102a is shorter than the length of the upper end plate; the telescopic block 102c is provided with a first inclined surface 102e, a second inclined surface 102f, and a third spring 102g, the first inclined surface 102e is arranged above the telescopic block 102c, the second inclined surface 102f is arranged below the telescopic block 102c, and the third spring 102g passes through the hole 102d and is arranged between the telescopic block 102c and the end surface of the third side groove 101f;

[0047] It is worth noting that the length of the first inclined surface 102e is smaller than that of the second inclined surface 102f. In the initial state, the second spring 102b and the third spring 102g are at their original lengths. The first inclined surface 102e is located at the outlet of the upper end plate of the stop sleeve 102a, and its exposed portion is tangent to the cylinder 202a. The second inclined surface 102f is located at the outlet of the lower end plate of the stop sleeve 102a, and its exposed portion can be tangent to the limit ring 202c.

[0048] Specifically, the buffer block 301 is provided with a fourth spring 301a, a third inclined surface 301b, and a fourth inclined surface 301c. The fourth spring 301a is provided between the buffer block 301 and the end surface of the first side groove 101d, the third inclined surface 301b is provided above the buffer block 301, and the fourth inclined surface 301c is provided below the buffer block 301;

[0049] In the initial state, the fourth spring 301 a is at its original length, the third inclined surface 301 b and the fourth inclined surface 301 c extend out of the first side groove 101 d , and the buffer block 301 is used to limit the sequence of extension and retraction of the lifting member 300 .

[0050] Specifically, the first movable cylinder 302 is provided with an end plate 302a, a rod groove 302b, a straight groove 302c, a guide groove 302d, a first connecting rod 302e, a top block 302f, and a notch 302g. The end plate 302a is arranged at the upper end of the first movable cylinder 302, the rod groove 302b is arranged at the end of the first movable cylinder 302 and matches the unlocking rod 101h, the straight groove 302c is arranged on the side wall of the first movable cylinder 302, the guide groove 302d is arranged on the inner wall of the first movable cylinder 302, one end of the first connecting rod 302e is hinged to the upper end of the straight groove 302c, the notch 302g is arranged on the inner wall of the first movable cylinder 302 and is connected to the rod groove 302b, and the top block 302f is slidably matched with the notch 302g.

[0051] Specifically, a fifth inclined surface 302h is provided at one end of the top block 302f.

[0052] Specifically, the second movable cylinder 303 is provided with a fifth spring 303a, a slider 303b, a side hole 303c, a locking block 303d, and a second connecting rod 303e. The fifth spring 303a is provided between the second movable cylinder 303 and the end surface of the end plate 302a. The slider 303b is provided on the side wall of the second movable cylinder 303 and slidably cooperates with the guide groove 302d. The side hole 303c is provided on the side wall of the second movable cylinder 303. The locking block 303d slidably cooperates with the side hole 303c. One end of the second connecting rod 303e is hinged to the side wall of the second movable cylinder 303, and the other end is hinged to one end of the first connecting rod 302e away from the straight groove 302c.

[0053] It is worth noting that a spring is provided between the locking block 303d and the side hole 303c, and a driving device is provided on the second movable cylinder 303, which can enable the second movable cylinder 303 to climb on the guide rod 101g and can be fixed at any position. This is a prior art and will not be elaborated on here. In the initial state, the fifth spring 303a is in a compressed state, the end plate 302a of the first movable cylinder 302 is located at the end of the first column groove 101a, and its lower end is in contact with the third inclined surface 301b. The first connecting rod 302e and the second connecting rod 303e form two bevels, the bevel of the first connecting rod 302e is the upper bevel, and the bevel formed by the second connecting rod 303e is the lower bevel; in the initial state, the side hole 303c coincides with the slot 302g, and the unlocking rod 101h is located in the rod slot 302b, squeezing the fifth bevel 302h, so that the top block 302f squeezes the locking block 303d to prevent the locking block 303d from entering the slot 302g.

[0054] In the initial installation stage, the infrared thermal imager 202 is inserted from the bottom of the box body 101, and the cylinder 202 and the limit ring 202c squeeze the second inclined surface 102f of the telescopic block 102c in turn, and the baffle 102 is pressed into the third side groove 101f, and then the cylinder 202 enters the second column groove 101b, and the lifting member 300 is also inserted into the cylinder 202. When the block 202b is squeezed by the second connecting rod 303e, the block 202b extends out of the side wall of the cylinder 202 and squeezes the moving block 202b. When the block 202b passes over the moving block 202b, the moving block 202b is reset and is located below the block 202b. At this time, the infrared thermal imager 202 is connected and is located in the box body 101; the whole process is easy to install and disassemble;

[0055] When the infrared thermal imager 202 needs to work, the second moving cylinder 303 is driven to move downward. During this process, the first moving cylinder 302 is blocked by the third inclined surface 301b and will not follow the first moving cylinder 303 to move. When the second moving cylinder 303 moves to the point where the slider 303b is located at the end of the guide groove 302d, the first connecting rod 302e and the second connecting rod 303e are in a vertical state, and the block 202b loses the support of the second connecting rod 303e and is recovered into the cylinder body 202a. Under the action of gravity, the lower end of the infrared thermal imager 202 squeezes the first inclined surface 102f and squeezes the telescopic block 102c into the stopper 102a. During this process, the stopper 102a does not move, and a part of its upper end plate is still located in the third column groove 101c, supporting the limit ring 202c. At this time, the lens of the infrared thermal imager 202 extends out of the box body 101 and can start working.

[0056] After the infrared thermal imager 202 has finished working, the driving cylinder and the second moving cylinder 303 continue to move downward. At this time, the second moving cylinder 303 will drive the first moving cylinder 302 to move and squeeze the third inclined surface 301b of the buffer block 301, and squeeze the buffer block 301a into the first side groove 101d. When the first moving cylinder 303 moves below the buffer block 301a, the buffer block 301 is reset (at this time, due to the effect of the fifth spring 303a, the first moving cylinder 302 will not be affected by gravity and move downward relative to the second moving block 303). At this time, the second moving block 303 is driven to rise. Since the first moving cylinder 303 is constrained by the fourth inclined surface 301c of the buffer block 301a, the first moving cylinder 303 does not move first, and the second moving cylinder 303 is recovered into the first moving cylinder 302. In this process, the first connecting rod 3 02e and the second connecting rod 303e re-form two beveled edges, the upper beveled edge can squeeze the block 202b to make it extend out of the cylinder 202a, squeeze the moving block 103, and can drive the block 202b to rise so that the infrared thermal imager 202 rises as a whole. When the second moving cylinder 303 moves up and the slider 303b moves to the upper end of the guide groove 302d, the locking block 303d enters the groove 302g, and the first moving cylinder 302 and the second moving cylinder 303 become a whole. Continue to move the second moving cylinder 303 upward, the first moving cylinder 302 will squeeze the fourth bevel 301c of the buffer block 301, and finally the first moving cylinder 302 and the second moving cylinder 303 complete the reset, and the block 202b is re-engaged with the second side groove 101e after skipping the moving block 103, and the infrared thermal imager 202 returns to the box body 101.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A coal blending monitoring device, characterized in that: include, A support (100) is arranged above the raw coal bin, and comprises a box body (101) arranged below the support (100); The monitoring component (200) comprises a laser scanner (201) and an infrared thermal imager (202); the laser scanner (201) is arranged on the bracket (100), and the infrared thermal imager (202) is arranged in the box body (101).

2. The coal blending monitoring device according to claim 1, characterized in that: The box body (101) is provided with a baffle (102), a moving block (103), a first column slot (101a), a second column slot (101b), a third column slot (101c), a first side slot (101d), a second side slot (101e), a third side slot (101f), a guide rod (101g), and an unlocking rod (101h); the first column slot (101a), the second column slot (101b), and the third column slot (101c) are coaxially arranged in the middle of the box body (101) from top to bottom; the third column slot (101c) runs through the box body (101). 01), the first side groove (101d) is arranged on the side wall of the first column groove (101a), the second side groove (101e) is arranged on the side wall of the second column groove (101b), the third side groove (101f) is arranged on the side wall of the third column groove (101c), the guide rod (101g) and the unlocking rod (101h) are arranged on the end surface of the first column groove (101a), the baffle plate (102) is slidably matched with the third side groove (101f), and the moving block (103) is slidably matched with the second side groove (101e); The moving block (103) is provided with a first spring (103a), and the first spring (103a) is arranged on the moving block (103) and is slidably matched with the second side groove (101e).

3. The coal blending monitoring device according to claim 2, characterized in that: The box body (101) is also provided with a lifting member (300), including a buffer block (301), a first movable cylinder (302), a second movable cylinder (303), the buffer block (301) slidingly cooperates with the first side groove (101d), the first movable cylinder (302) slidingly cooperates with the first column groove (101a), the outer wall of the second movable cylinder (303) slidingly cooperates with the first movable cylinder (302), and the inner wall of the second movable cylinder (303) slidingly cooperates with the guide rod (101g).

4. The coal blending monitoring device according to claim 3, characterized in that: The infrared thermal imager (202) is provided with a cylinder (202a), a block (202b), and a limit ring (202c); the block (202b) is slidably matched with the side wall of the cylinder (202a); the limit ring (202c) is arranged on the side wall of the cylinder (202a); the cylinder (202a) is slidably matched with the second column groove (101b); and the limit ring (202c) is slidably matched with the third column groove (101c).

5. The coal blending monitoring device according to claim 4, characterized in that: The baffle (102) comprises a baffle sleeve (102a), a second spring (102b), and a telescopic block (102c); the second spring (102b) is arranged between the baffle sleeve (102a) and an end surface of the third side groove (101f); and the telescopic block (102c) is slidably matched with the baffle sleeve (102a).

6. The coal blending monitoring device according to claim 5, characterized in that: The blocking sleeve (102a) is provided with a hole (102d), the hole (102d) passes through the end of the blocking sleeve (102a), and the length of the lower end plate of the blocking sleeve (102a) is shorter than the length of the upper end plate; The telescopic block (102c) is provided with a first inclined surface (102e), a second inclined surface (102f), and a third spring (102g); the first inclined surface (102e) is provided above the telescopic block (102c); the second inclined surface (102f) is provided below the telescopic block (102c); and the third spring (102g) passes through the hole (102d) and is provided between the telescopic block (102c) and an end surface of the third side groove (101f).

7. The coal blending monitoring device according to claim 6, characterized in that: The buffer block (301) is provided with a fourth spring (301a), a third inclined surface (301b), and a fourth inclined surface (301c); the fourth spring (301a) is provided between the buffer block (301) and the end surface of the first side groove (101d); the third inclined surface (301b) is provided above the buffer block (301); and the fourth inclined surface (301c) is provided below the buffer block (301).

8. The coal blending monitoring device according to claim 7, characterized in that: The first movable cylinder (302) is provided with an end plate (302a), a rod groove (302b), a straight groove (302c), a guide groove (302d), a first connecting rod (302e), a top block (302f), and a notch (302g); the end plate (302a) is provided at the upper end of the first movable cylinder (302); the rod groove (302b) is provided at the end of the first movable cylinder (302) and matches the unlocking rod (101h); the straight The groove (302c) is arranged on the side wall of the first movable cylinder (302), the guide groove (302d) is arranged on the inner wall of the first movable cylinder (302), one end of the first connecting rod (302e) is hinged to the upper end of the straight groove (302c), the notch (302g) is arranged on the inner wall of the first movable cylinder (302) and is connected to the rod groove (302b), and the top block (302f) is slidably matched with the notch (302g).

9. The coal blending monitoring device according to claim 8, characterized in that: A fifth inclined surface (302h) is provided at one end of the top block (302f).

10. The coal blending monitoring device according to claim 9, characterized in that: The second movable cylinder (303) is provided with a fifth spring (303a), a slider (303b), a side hole (303c), a locking block (303d), and a second connecting rod (303e). The fifth spring (303a) is arranged between the second movable cylinder (303) and the end surface of the end plate (302a). The slider (303b) is arranged on the side wall of the second movable cylinder (303) and is slidably matched with the guide groove (302d). The side hole (303c) is arranged on the side wall of the second movable cylinder (303). The locking block (303d) is slidably matched with the side hole (303c). One end of the second connecting rod (303e) is hinged to the side wall of the second movable cylinder (303), and the other end is hinged to one end of the first connecting rod (302e) away from the straight groove (302c).

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