Coal powder sampling device in the cone of coal powder collector

Abstract

The utility model relates to a coal powder sampling device in a coal powder collector cone, and its structure includes a shell, a coal powder box and a pulling mechanism, the inner end of the shell is used to be fixed on the coal powder collector cone and communicated with the inner cavity of the coal powder collector cone, the outer end of the shell is provided with a fixed frame, a coal powder box is provided in the shell, and the pulling device extends into the shell through the fixed frame and is connected to the coal powder box; the side walls of the coal powder box are in close contact with the inner wall of the shell, and the end of the coal powder box away from the fixed frame is open, a coal powder pipeline is provided on the shell, and a coal powder outlet is provided on the corresponding side of the coal powder box. The utility model can quickly switch between the sampling state and the non-sampling state, and can prevent the spilling of coal powder, and is convenient for large-scale sampling from the coal powder collector to observe the coal powder quality and detect the coal powder parameters later, so as to solve the problems of complicated coal powder sampling process, long sampling time and coal powder spilling during sampling.

Description

Technical Field

[0001] The utility model relates to a coal powder collecting device, in particular to a coal powder sampling device in a coal powder collector cone. Background Art

[0002] The pulverized coal collector filters and collects the pulverized coal ground by the mill, and stores the collected pulverized coal in the pulverized coal bin, waiting for the injection tank to inject the pulverized coal into the blast furnace. However, if the particle size of the pulverized coal is too large, it will clog the sieve plate of the pulverized coal screen and affect the screening and filtering speed of the pulverized coal screen. Workers are required to clean the sieve plate of the pulverized coal screen, which increases a lot of manpower costs. At the same time, if the particle size of the pulverized coal is too large, it will affect the combustion effect of the pulverized coal in the blast furnace, clog the blast furnace spray gun, and cause interruption of the pulverized coal injection. In order to ensure sufficient combustion heat in the blast furnace, the use of coke needs to be increased, which increases the production cost of the blast furnace.

[0003] Therefore, it is necessary to take samples of the coal powder ground by the mill for inspection. The current method for sampling coal powder is to drill a hole in the cone of the coal powder collector equipment to connect a pipe. The pipe is equipped with a valve for control. When sampling, the valve at the outlet of the cone of the coal powder collector must be closed first. After a certain amount of coal powder has accumulated, the coal powder will be discharged through the pipe. However, due to the backlog of coal powder, it may sometimes cause blockage of the coal powder in the pipe, which needs to be solved by vibration or direct dredging. The sampling of coal powder is intermittent and fluctuates. Some of the coal powder falls to the ground. Not only is the operation process cumbersome and the sampling time long, but a large amount of coal powder is wasted, resulting in a great increase in human resource costs and material resource costs. At the same time, the coal powder particles are too small, and spilling on the ground also creates difficulties for subsequent cleaning.

[0004] At present, coal powder is sampled by using circular pipe shovels and spiral feeders. Although the problem of coal powder blockage in the sampling pipe is solved, the use of sampling tools will also cause the problem of adding a worker to cooperate in sampling, which further increases the human resource cost; in order to ensure the accuracy of sampling detection and observation, a large amount of coal powder needs to be taken. Although the use of sampling tools can reduce some sampling time, the sampling time is still relatively long; in the process of using sampling tools to take coal powder, a large amount of coal powder will also be spilled, resulting in the problem of coal powder waste and difficulty in coal powder cleaning.

[0005] The above methods have not fundamentally solved the problems existing in the coal powder sampling process, but have only reduced or mitigated some of the problems, and further improvements are still needed. Utility Model Content

[0006] The utility model aims to provide a coal powder sampling device in a coal powder collector cone to solve the problems of long sampling time and coal powder spilling during sampling in the existing coal powder sampling.

[0007] The utility model is implemented as follows: a coal powder sampling device in a coal powder collector cone, comprising an outer shell, a coal powder box and a pulling mechanism, the inner end of the outer shell is used to be fixed on the coal powder collector cone and communicated with the inner cavity of the coal powder collector cone, the outer end of the outer shell is provided with a fixed frame, a coal powder box is provided in the outer shell, the pulling mechanism passes through the fixed frame and extends into the outer shell and is connected with the coal powder box; the side walls of the coal powder box are in close contact with the inner wall of the outer shell, and the end of the coal powder box away from the fixed frame is open, a coal powder channel is provided on the outer shell, and a coal powder outlet is provided on the corresponding side of the coal powder box.

[0008] Furthermore, the pulling mechanism includes a connecting rod, a first connecting hole and a second connecting hole are provided on the connecting rod, a pin is connected to the fixed frame, when the connecting rod is pulled to make the first connecting hole correspond to the pin, the coal powder box is located at the outer end port of the outer shell, when the connecting rod is pulled to make the second connecting hole correspond to the pin, the coal powder outlet of the coal powder box corresponds to the coal powder channel.

[0009] Furthermore, a latch is inserted at one end or both ends of the pin shaft.

[0010] Furthermore, a stop pin is provided on the linkage rod, and the stop pin is located in front of the second penetration hole. When the stop pin contacts the fixed frame, the coal powder outlet of the coal powder box corresponds to the coal powder channel.

[0011] Furthermore, a handle is provided at the end of the connecting rod.

[0012] Furthermore, it also includes a reset mechanism, which is located between the coal powder box and the fixed frame.

[0013] Furthermore, a sealing baffle is provided at the outer end port of the shell, and the sealing baffle is used for sealing contact with the end face of the coal powder box.

[0014] Furthermore, the pulverized coal channel is connected with a pulverized coal fluidization pipeline, and a pulverized coal fluidization valve is arranged on the pulverized coal fluidization pipeline.

[0015] Furthermore, a purge pipeline is provided on the shell, and a purge valve is provided on the purge pipeline.

[0016] Furthermore, the shell is arranged obliquely on the powder collector cone.

[0017] The utility model is arranged on the cone of the coal powder collector, and the coal powder box is moved by pulling the pulling mechanism, so as to quickly switch between the sampling state and the non-sampling state, and can prevent the coal powder from spilling, so as to facilitate large-scale sampling from the coal powder collector for subsequent observation of the coal powder quality and detection of the coal powder parameters, and solve the problems of complicated coal powder sampling process, long sampling time and coal powder spilling during the sampling process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model.

[0019] Figure 2 It is a structural diagram of the pull-out mechanism and the coal powder box of the utility model.

[0020] Figure 3 It is a structural diagram of the utility model when coal powder sampling is performed.

[0021] Figure 4 It is an installation schematic diagram of the utility model.

[0022] In the figure: 1. outer shell; 2. coal powder box; 3. connecting rod; 4. fixed frame; 5. coal powder channel; 6. purge pipe; 7. pin shaft; 8. latch; 9. coal powder fluidization pipe; 10. coal powder fluidization valve; 11. purge valve; 12. handle; 13. spring; 14. sealing baffle; 15. coal powder outlet; 16. first connecting hole; 17. second connecting hole; 18. stop pin; 20. coal powder collector. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings.

[0024] like Figure 4 As shown, the utility model is used for sampling coal powder in the cone of the coal powder collector 20, and is generally installed on the outer shell 1 at the lower part of the cone of the coal powder collector 20.

[0025] like Figure 1 , Figure 2As shown, the utility model includes a shell 1, a coal powder box 2, a fixed frame and a pull-out mechanism. The shell 1 is installed on the cone of the coal powder collector 20, the coal powder box 2 is located in the shell 1, the pull-out mechanism is fixed on the shell 1 and extends into the shell 1 to connect with the coal powder box 2, and the position of the coal powder box 2 can be adjusted by the pull-out mechanism to perform coal powder sampling operation. The inner end of the shell 1 is used to be fixed on the cone of the coal powder collector 20 and communicate with the inner cavity of the cone of the coal powder collector 20, the outer end of the shell 1 is provided with a fixed frame, the shell 1 is provided with a coal powder box 2, the pull-out mechanism passes through the fixed frame and extends into the shell 1 and connects with the coal powder box 2; the side walls of the coal powder box 2 are in close contact with the inner wall of the shell 1, and the end of the coal powder box 2 away from the fixed frame is open, a coal powder channel 5 is opened on the shell 1, and a coal powder outlet 15 is opened on the corresponding side of the coal powder box 2.

[0026] Among them, the shell 1 is a rectangular pipe structure with openings at both ends. One end of the shell 1 is fixedly connected to the shell 1 of the cone of the coal powder collector 20 and is connected to the inner cavity of the cone of the coal powder collector 20, and the other end is used for fixed installation of the pulling mechanism.

[0027] The coal powder box 2 is also a rectangular structure, so that the side walls of the coal powder box 2 can be in close contact with the inner wall of the shell 1, thereby improving the sealing between the coal powder box 2 and the shell 1. The coal powder box 2 is used for sampling coal powder buffering, and can also play a role in sealing coal powder when the coal powder sampling device is not used.

[0028] The coal powder in the coal powder collection pipe will gather at the lower part of the cone of the coal powder collector 20 and enter the coal powder box 2. Under normal circumstances, the coal powder box 2 is located at the end of the outer shell 1. Under the blocking effect of the coal powder box 2, the coal powder will not enter the coal powder channel. Only when the coal powder box 2 moves to the other end to the coal powder channel 5 or exceeds the position of the coal powder channel 5, the coal powder can pass through the outer shell 1 into the coal powder channel 5. After the coal powder is output from the coal powder channel 5, the sampling of the coal powder is completed.

[0029] The position of the coal powder box 2 is controlled by a pulling and pulling mechanism, wherein the pulling and pulling mechanism includes a connecting rod 3, on which a first through hole 16 and a second through hole 17 are provided, and a pin shaft 7 is penetrated on the fixed frame. When the connecting rod 3 is pulled and the first through hole 16 corresponds to the pin shaft 7, the coal powder box 2 is located at the outer end port of the outer shell 1. When the connecting rod 3 is pulled and the second through hole 17 corresponds to the pin shaft 7, the coal powder outlet 15 of the coal powder box 2 corresponds to the coal powder channel 5.

[0030] Pulling and pulling the connecting rod 3 can move the position of the coal powder box 2, and at the same time, the coal powder box 2 is positioned through the first through hole 16 and the second through hole 17. When the first through hole 16 on the connecting rod 3 corresponds to the pin 7, the coal powder box 2 is just located at the end of the shell 1, and the pin 7 is inserted into the first through hole 16 to fix the position of the connecting rod 3 and the coal powder box 2. At this time, the coal powder box 2 is covered at the opening of the cone shell 1 of the coal powder collector 20, and the coal powder can only enter the coal powder box 2, such as Figure 1 When the second through hole 17 on the linkage rod 3 corresponds to the pin 7, the coal powder outlet 15 of the coal powder box 2 just corresponds to the coal powder channel 5, the pin 7 is inserted into the second through hole 17, the position of the linkage rod 3 and the coal powder box 2 is fixed, and the coal powder enters the coal powder channel through the housing 1, the coal powder box 2 and the coal powder outlet 15, and then is discharged from the coal powder channel 5, as shown. Figure 3 shown.

[0031] In order to further facilitate the sampling of coal powder, two positions of the coal powder box 2 need to be limited.

[0032] For the state where the coal powder box 2 is located at the end of the housing 1, it is only necessary to ensure that the coal powder box 2 reaches the end position, and a reset mechanism can be provided, and the reset mechanism is located between the coal powder box 2 and the fixed frame. The reset mechanism can be an elastic element such as a spring 13, and the elastic force of the elastic element can be used to press the coal powder box 2 at the end position. Under the action of the spring 13, the coal powder box 2 has a tendency to approach the outer wall of the cone of the coal powder collector 20, thereby limiting the position of the coal powder box 2 and facilitating the reset of the coal powder box 2.

[0033] For the state in which the coal powder outlet 15 of the coal powder box 2 corresponds to the coal powder channel 5, a stop pin 18 is provided on the connecting rod 3. The stop pin 18 is located in front of the second through-hole 17. When the stop pin 18 contacts the fixed frame 4, the coal powder outlet 15 of the coal powder box 2 corresponds to the coal powder channel 5. Due to the existence of the stop pin 18, the extreme position of the movement of the coal powder box 2 is the position where the coal powder outlet 15 just corresponds to the coal powder channel 5, thereby realizing the rapid positioning of the coal powder box 2.

[0034] In order to ensure the stable and reliable positioning of the coal powder box 2, a pin 8 is inserted at one or both ends of the pin shaft 7. After the pin shaft 7 is inserted into the connecting rod 3, the pin 8 is inserted at the end of the pin shaft 7. The pin 8 can prevent the pin shaft 7 from falling out.

[0035] A handle 12 is provided at the end of the connecting rod 3 , and an operator can quickly move the connecting rod 3 through the handle 12 , which is convenient for operation and control.

[0036] A sealing baffle 14 is provided at the outer end port of the outer shell 1, and the sealing baffle 14 is used for sealing contact with the end face of the coal powder box 2. When the coal powder box 2 moves to the end of the outer shell 1 under the action of the reset mechanism, the end face of the side wall of the coal powder box 2 is pressed against the sealing baffle 14, thereby ensuring the sealing between the coal powder box 2 and the outer shell 1 and preventing coal powder from escaping from the gap between the coal powder box 2 and the outer shell 1.

[0037] The pulverized coal channel 5 is connected to a pulverized coal fluidization pipeline 9, on which a pulverized coal fluidization valve 10 is provided. Air or nitrogen is used to fluidize the pulverized coal in the pulverized coal channel 5 to prevent the pipeline from being blocked due to accumulation of pulverized coal.

[0038] A purge pipe 6 is provided on the outer shell 1, and a purge valve 11 is provided on the purge pipe 6. Air or nitrogen is used to purge the residual coal powder in the outer shell 1 of the coal powder sampling device to prevent the coal powder in the outer shell 1 from accumulating in dead corners and causing the risk of flammability and explosion.

[0039] like Figure 4 As shown, the utility model is generally arranged obliquely on the cone of the powder collector.

[0040] The method of using the utility model is as follows:

[0041] When using a coal powder sampling device to sample coal powder from the cone of the coal powder collector 20, first fix the sampling bag on the coal powder channel 5, pull out one of the pins 8 from the pin shaft 7, take the pin shaft 7 out of the first connecting hole 16 on the connecting rod 3, and quickly align the coal powder outlet 15 of the coal powder box 2 with the mouth of the coal powder channel 5 by pulling the handle 12, and insert the pin shaft 7 into the second connecting hole 17 on the connecting rod 3. At this time, the coal powder in the cone of the coal powder collector 20 enters the coal powder channel 5 through the coal powder outlet 15, and is then collected in the sampling bag.

[0042] If the pulverized coal in the pulverized coal channel 5 is blocked due to backlog, the pulverized coal fluidization valve 10 on the pulverized coal fluidization pipeline 9 is opened, and the fluidizing gas enters the pulverized coal channel 5, and the blocked pulverized coal is flushed out by the strong fluidization impact force, so as to ensure that the pulverized coal is taken out smoothly. After the sampling is completed, the pulverized coal fluidization valve 10 is closed.

[0043] After the sampling is completed, the pin shaft 7 is pulled out, and the connecting rod 3 can be quickly reset under the action of the spring 13, and the sampling of the coal powder is stopped in time to prevent excessive coal powder from being taken and spilled, causing waste of coal powder and difficulty in cleaning. Then the pin shaft 7 is fixed to the first connecting hole 16 on the connecting rod 3, and the pin 8 is inserted into the pin shaft 7. The purge valve 11 on the purge pipe 6 is opened to purge the dead corners in the outer shell 1 to prevent the accumulation of coal powder in the dead corners and ensure the safety and reliability of the sampling system. After the purge is completed, the purge valve 11 is closed, and the sampling bag is removed from the coal powder channel 5 to complete the coal powder sampling.

[0044] The utility model can fundamentally solve the problems of complicated operation procedures, long sampling time, waste of coal powder, and difficulty in cleaning coal powder in the process of coal powder sampling, and ensure fast and effective sampling and detection of coal powder, so as to ensure the smooth coal powder spraying in the subsequent coal powder screening and spraying tank, improve the safety and reliability of the coal spraying system, reduce the possibility of production accidents, reduce the waste of resources, and reduce the production cost of the enterprise. It also saves a lot of human resource costs and reduces the cost expenditure of the enterprise.

Claims

1. A coal powder sampling device in a coal powder collector cone, characterized in that: It includes an outer shell, a coal powder box and a pulling mechanism. The inner end of the outer shell is used to be fixed on the coal powder collector cone and is connected with the inner cavity of the coal powder collector cone. The outer end of the outer shell is provided with a fixed frame. A coal powder box is provided in the outer shell. The pulling mechanism passes through the fixed frame and extends into the outer shell and is connected with the coal powder box. The side walls of the coal powder box are in close contact with the inner wall of the outer shell, and the end of the coal powder box away from the fixed frame is open. A coal powder channel is provided on the outer shell, and a coal powder outlet is provided on the corresponding side of the coal powder box.

2. The coal powder sampling device in the coal powder collector cone according to claim 1, characterized in that: The pulling and pulling mechanism includes a connecting rod, which is provided with a first through hole and a second through hole, and a pin is passed through the fixed frame. When the connecting rod is pulled to make the first through hole correspond to the pin, the coal powder box is located at the outer end port of the shell. When the connecting rod is pulled to make the second through hole correspond to the pin, the coal powder outlet of the coal powder box corresponds to the coal powder channel.

3. The coal powder sampling device in the coal powder collector cone according to claim 2, characterized in that: A latch is plugged into one or both ends of the pin shaft.

4. The coal powder sampling device in the coal powder collector cone according to claim 2, characterized in that: A stop pin is provided on the linkage rod, and the stop pin is located at the front part of the second penetration hole. When the stop pin contacts the fixed frame, the coal powder outlet of the coal powder box corresponds to the coal powder channel.

5. The coal powder sampling device in the coal powder collector cone according to claim 2, characterized in that: A handle is arranged at the front end of the connecting rod.

6. The coal powder sampling device in the coal powder collector cone according to claim 1, characterized in that: It also includes a reset mechanism, which is located between the coal powder box and the fixed frame.

7. The coal powder sampling device in the coal powder collector cone according to claim 1, characterized in that: A sealing baffle is arranged at the outer end port of the shell, and the sealing baffle is used for sealing contact with the end face of the coal powder box.

8. The coal powder sampling device in the coal powder collector cone according to claim 1, characterized in that: The pulverized coal channel is connected with a pulverized coal fluidization pipeline, and a pulverized coal fluidization valve is arranged on the pulverized coal fluidization pipeline.

9. The coal powder sampling device in the coal powder collector cone according to claim 1, characterized in that: A purge pipeline is arranged on the shell, and a purge valve is arranged on the purge pipeline.

10. The coal powder sampling device in the coal powder collector cone according to claim 1, characterized in that: The shell is arranged obliquely on the powder collector cone.

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