Pulverized coal bunker sampling device

Abstract

The utility model relates to the technical field of pulverized coal sampling, and discloses a pulverized coal bunker sampling device which comprises a pulverized coal bunker, the bottom of the pulverized coal bunker is fixedly connected with a sampling valve, the sampling valve is an electromagnetic valve, can be operated on site and is arranged in an interlocking relation with a level gage, and when pulverized coal in a sample collector reaches a set level, the sampling valve is automatically closed, and the sampling valve is opened. A sample collector is fixedly mounted below the sampling valve, a ventilation valve and a level gage are mounted on the sample collector, one end of the sampling valve is electrically connected with a local switch button, one end, far away from the sampling valve, of the sample collector is fixedly connected with a conveying pipe, and a sample collecting valve is fixedly mounted at the input end of the conveying pipe. According to the pulverized coal sampling device, the pulverized coal discharging speed is controlled by adjusting the opening degree of the sample collecting valve, pulverized coal is conveyed into the sample containing device through the conveying pipe by means of the gravity and friction force of the pulverized coal, pulverized coal sampling can be conducted at any time, and meanwhile field work is convenient and simple. The device is simple in structure, can be manufactured by self, reduces the cost, is integrally sealed, is good in safety, and avoids environmental pollution.

Description

Technical Field

[0001] The utility model relates to the technical field of coal powder sampling, in particular to a coal powder bin sampling device. Background Art

[0002] The quality of coal powder processing is an important technical indicator of blast furnace pulverizing. Its stability is related to the stability of blast furnace production. It is necessary to sample and analyze coal powder particle size, moisture, density and other indicators three times a day for 24 hours. The fineness of coal powder directly affects the ignition and combustion performance of fuel in the boiler, and also affects the boiler efficiency and the economy of the pulverizing system. The measurement of coal powder fineness depends on coal powder sampling. The existing coal powder sampling device has problems such as poor sampling effect and waste of sampling working time.

[0003] To this end, we propose a coal powder bunker sampling device. Utility Model Content

[0004] The utility model mainly solves the technical problems existing in the above-mentioned prior art and provides a coal powder bin sampling device.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a coal powder bin sampling device, including a coal powder bin, a sampling valve fixedly connected to the bottom of the coal powder bin, a sample collector fixedly installed below the sampling valve, a breathable valve and a level meter installed on the sample collector, one end of the sampling valve is electrically connected to an on-site switch button, one end of the sample collector away from the sampling valve is fixedly connected to a delivery pipe, and the sample collecting valve is fixedly installed at the input end of the delivery pipe.

[0006] Preferably, the sampling valve is a solenoid valve, which can be operated locally and is arranged in a chain relationship with the level meter. When the coal powder in the sample collector reaches the set level, the sampling valve is automatically closed.

[0007] Preferably, the sample collecting valve is a galvanized manual ball valve with a diameter of 50 mm and an angle of 30 degrees with the vertical direction.

[0008] Preferably, the sample collector is a cylindrical galvanized iron box, 500 mm long, 200 mm in diameter, and at an angle of 30 degrees to the vertical.

[0009] Preferably, the delivery pipe is a galvanized steel pipe, 80 mm long, 50 mm in diameter, and angled at 30 degrees from the vertical.

[0010] Beneficial Effects

[0011] The utility model provides a coal powder bin sampling device, which has the following beneficial effects:

[0012] The coal powder bin sampling device controls the powder discharge speed by adjusting the opening of the sample collecting valve. The coal powder is transported to the sample receiving device through the conveying pipe by its own gravity and friction. The coal powder sampling can be carried out at any time, and the on-site work is convenient and simple. The device has a simple structure and can be made by oneself, which reduces the cost. At the same time, the whole device is sealed as a whole, has good safety, and avoids environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings described below are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0014] The structures, proportions, sizes, etc. illustrated in this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with the technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantial technical significance. Any structural modification, change in proportion or adjustment of size shall still fall within the scope of the technical contents disclosed in the present invention without affecting the effects and purposes that can be achieved by the present invention.

[0015] Figure 1 It is the front view of the structure of the utility model.

[0016] Legend:

[0017] 1. Sampling valve; 2. Sample collector; 3. Breathing valve; 4. Flow-aiding spray device; 5. Material level meter; 6. Sample collecting valve; 7. Delivery pipe; 8. Local switch button. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Embodiment: A coal powder bunker sampling device, such as Figure 1, including a pulverized coal bin, a sampling valve 1 is fixedly connected to the bottom of the pulverized coal bin, a sample collector 2 is fixedly installed below the sampling valve 1, a breathable valve 3 and a level meter 5 are installed on the sample collector 2, a flow-assisting blowing device 4 is fixedly connected to the inner cavity of the pulverized coal bin, one end of the sampling valve 1 is electrically connected to an on-site switch button 8, an end of the sample collector 2 away from the sampling valve 1 is fixedly connected to a delivery pipe 7, the delivery pipe 7 is communicated with the sample collector 2, and a sample collecting valve 6 is fixedly installed at the input end of 7.

[0020] The working principle of the utility model is as follows: when in use, open the on-site switch button 8 on the sampling valve 1 to open the sampling valve 1. The coal powder is transported to the sample collector 2 through the sampling valve 1 by its own gravity and friction. The sample collector 2 is equipped with a breathable valve 3 to prevent excessive gas in the sample collector 2 and slow down the powder feeding speed. When the powder is not discharged smoothly, the flow-aiding blowing device 4 can be turned on to quickly discharge the powder. A level meter 5 is also installed on the sample collector 2. When the level meter 5 reaches the set material level, the sampling valve 1 is automatically closed. Then manually open the sample collecting valve 6, and control the powder feeding speed by adjusting the opening of the sample collecting valve 6. The coal powder is transported to the sample receiving device through the conveying pipe 7 by its own gravity and friction, thereby realizing convenient and fast sampling.

[0021] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A coal powder bunker sampling device, comprising a coal powder bunker, Features: A sampling valve (1) is fixedly connected to the bottom of the coal powder bin, a sample collector (2) is fixedly installed below the sampling valve (1), a vent valve (3) and a material level meter (5) are installed on the sample collector (2), one end of the sampling valve (1) is electrically connected to an on-site switch button (8), one end of the sample collector (2) away from the sampling valve (1) is fixedly connected to a delivery pipe (7), and the input end of the delivery pipe (7) is fixedly installed with a sample collector valve (6).

2. A pulverized coal bunker sampling device according to claim 1, Features: The sampling valve (1) is an electromagnetic valve that can be operated locally and is arranged in a chain relationship with the material level meter (5). When the coal powder in the sample collector (2) reaches a set material level, the sampling valve (1) is automatically closed.

3. A pulverized coal bunker sampling device according to claim 1, Features: The sample collecting valve (6) is a galvanized manual ball valve with a diameter of 50 mm and an angle of 30 degrees with the vertical direction.

4. A pulverized coal bunker sampling device according to claim 1, Features: The sample collector (2) is a cylindrical galvanized iron box, 500 mm long, 200 mm in diameter, and at an angle of 30 degrees to the vertical direction.

5. A pulverized coal bunker sampling device according to claim 1, Features: The delivery pipe (7) is a galvanized steel pipe, 80 mm long, 50 mm in diameter, and has an angle of 30 degrees with the vertical direction.

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