Pulverized coal sampling device of coal-fired boiler

Abstract

The utility model discloses a coal-fired boiler pulverized coal sampling device which comprises a material conveying channel, a supporting plate and a material collecting barrel, the supporting plate is arranged outside the material conveying channel, a first motor is arranged at the left end of the supporting plate, a lead screw is arranged at the right end of the first motor, and a displacement rod is connected to the lead screw in a threaded fit mode. A second motor is arranged at the bottom of the displacement rod, a material collecting barrel is arranged at the right end of the second motor, the right end of the material collecting barrel extends into the material conveying channel, the right end of the material collecting barrel is sequentially sleeved with an inner sleeve and an outer sleeve, powder inlets are formed in the material collecting barrel, the inner sleeve and the outer sleeve respectively, and a stored sample is arranged on the outer wall of the left end of the material collecting barrel. The pulverized coal sampling device solves the problems that traditional pulverized coal sampling is difficult and poor in representativeness, under the action of the first motor, the collecting barrel can enter or move out of the conveying channel, under the action of the second motor, the three pulverized coal inlets can be overlapped, rapid pulverized coal sampling is achieved, pollution to the environment is avoided, the representativeness of samples is improved, and the pulverized coal sampling device is convenient to use and high in practicability. The operation is simple.

Description

TECHNICAL FIELD

[0001] The utility model relates to a sampling device, in particular to a coal powder sampling device of coal-fired boiler belongs to boiler detection technical field. BACKGROUND

[0002] The coal powder fineness of coal-fired boiler is an important index for supervising the operation of boiler and economy, and the accuracy and representativeness of sampling result directly affect the combustion efficiency of boiler, the control of pollutant emission and the safety of equipment operation, however, in actual operation, the coal powder sampling of coal-fired boiler faces many challenges, first, the sampling difficulty is great, because the coal powder has strong fluidity and easy dispersibility, the traditional sampling method often cannot effectively capture the coal powder sample, leading to complex sampling process and low efficiency, second, the sampling representativeness is poor, because the coal powder is unevenly distributed in the boiler, a single sampling point or traditional sampling method cannot fully reflect the real characteristics of coal powder, thereby affecting the accuracy of subsequent detection and analysis, in addition, the traditional sampling method is easy to cause the dispersibility of coal powder in the operation process, which not only leads to sample loss, but also may pollute the environment. SUMMARY

[0003] The utility model solves the technical problems that the prior art has the problems that the traditional coal powder sampling is difficult and the representativeness is poor, improves the representativeness of sample, realizes pollution-free operation, is convenient to use and easy to operate.

[0004] The utility model takes the technical scheme that solves technical problems:

[0005] A coal powder sampling device of coal-fired boiler, including conveying passage, support board and material collecting barrel, the outside of conveying passage is provided with support board, the left end of support board is provided with first motor, the right end of first motor is provided with lead screw, the displacement rod is connected on the lead screw through thread cooperation, the bottom of displacement rod is provided with second motor, the right end of second motor is provided with material collecting barrel, the right end of material collecting barrel extends into conveying passage, and the outside of the right end of material collecting barrel is sequentially sleeved with inner sleeve pipe and outer sleeve pipe, the material collecting barrel, inner sleeve pipe and outer sleeve pipe are respectively correspondingly excavated with the coal powder inlet, and the outer wall of the left end of material collecting barrel is provided with sample storage bottle.

[0006] The reinforcing rod is arranged between the support board and the conveying passage, the displacement groove is arranged at the bottom of the left end of the conveying passage, the upper end of the displacement rod extends into the displacement groove and is slidably connected with the displacement groove.

[0007] The left end of the lead screw is fixedly connected with the output end of the first motor, and the right end of the lead screw is rotatably connected with the outer wall of the conveying passage through the shaft sleeve.

[0008] The second motor is fixedly connected with the aggregate barrel, and drives the aggregate barrel to rotate.

[0009] The right end of the aggregate barrel extends into the material conveying channel, and a base is rotatably connected to the right end of the aggregate barrel.

[0010] An outlet is arranged on the outer wall of the left end of the aggregate barrel, and a sample storage bottle is threadedly connected to the outlet.

[0011] The outer diameter of the base is larger than the outer diameter of the outer sleeve.

[0012] The powder inlet on the outer sleeve is located at the bottom of the right end of the outer sleeve, and the powder inlet on the inner sleeve corresponds to the powder inlet on the aggregate barrel.

[0013] A sealing ring is arranged at the intersection between the outer sleeve and the base.

[0014] The positive and beneficial effects of the present application are as follows:

[0015] 1. The aggregate barrel can be moved into the material conveying channel along the positioning sleeve under the drive of the first motor and the lead screw until the powder inlets on the aggregate barrel, the inner sleeve and the outer sleeve enter the material conveying channel.

[0016] 2. The sample storage bottle is threadedly connected to the outlet, which facilitates the staff to take the powder, ensures the sealing and stability of the sampling process, and avoids pollution to the environment.

[0017] 3. After the powder is taken, the aggregate barrel can be moved out of the material conveying channel under the action of the first motor, which does not affect the normal flow of the powder pipe and the operation of the boiler. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structure of the present application is shown in the attached drawings.

[0019] Figure 2 The powder taking state diagram of the utility model;

[0020] The arrow in the figure indicates the moving direction of the coal powder in the material conveying channel;

[0021] Wherein: 1-material conveying channel, 2-reinforcing rod, 3-support plate, 4-first motor, 5-screw rod, 6-displacement rod, 7-second motor, 8-material collecting barrel, 9-spiral sample feeding rod, 10-discharge port, 11-base, 12-inner sleeve, 13-outer sleeve, 14-positioning sleeve, 15-powder feeding port, 16-sample storage bottle, 17-sealing ring. DETAILED DESCRIPTION

[0022] The utility model will be explained and illustrated further in combination with the drawings:

[0023] Embodiment, see Figures 1-2 A coal-fired boiler coal powder sampling device, including material conveying channel 1, support plate 3 and material collecting barrel 8, be provided with support plate 3 at the outside of material conveying channel 1, be provided with first motor 4 at the left end of support plate 3, be provided with screw rod 5 at the right end of first motor 4, be provided with displacement rod 6 on screw rod 5 through thread cooperation and be connected, be provided with second motor 7 at the bottom of displacement rod 6, be provided with material collecting barrel 8 at the right end of second motor 7, the right end of material collecting barrel 8 is stretched into material conveying channel 1, and inner sleeve 12, outer sleeve 13 are successively set in the outside of the right end of material collecting barrel 8, be provided with powder inlet 15 on material collecting barrel 8, inner sleeve 12, outer sleeve 13 respectively, be provided with sample storage bottle 16 on the outer wall of the left end of material collecting barrel 8.

[0024] Reinforcing rod 2 is arranged between support plate 3 and material conveying channel 1, displacement recess 301 is arranged at the bottom of the left end of material conveying channel 1, the upper end of displacement rod 6 is stretched into displacement recess 301 and is slidably connected with displacement recess 301.

[0025] The left end of screw rod 5 is fixedly connected with the output end of first motor 4, and the right end of screw rod 5 is rotatably connected with the outer wall of material conveying channel 1 through a shaft sleeve.

[0026] Spiral sample feeding rod 9 is arranged in material collecting barrel 8, the output end of second motor 7 is fixedly connected with material collecting barrel 8, and drives material collecting barrel 8 to rotate.

[0027] The right end of material collecting barrel 8 is stretched into material conveying channel 1, and base 11 is rotatably connected with the right end of material collecting barrel 8, inner sleeve 12 is fixedly connected with material collecting barrel 8, outer sleeve 13 is arranged on the outside of inner sleeve 12 and is fixedly connected with base 11, inner sleeve 12 and outer sleeve 13 are rotatably connected, positioning sleeve 14 is arranged on the outside of outer sleeve 13, positioning sleeve 14 is fixedly connected with material conveying channel 1, and outer sleeve 13 and positioning sleeve 14 are slidably connected.

[0028] The outer wall of the left end of the aggregate bucket 8 is provided with a discharge port 10, and a sample storage bottle 16 is connected to the discharge port 10 through screw connection.

[0029] The outer diameter of the base 11 is greater than the outer diameter of the outer sleeve 13.

[0030] The powder inlet on the outer sleeve 13 is located at the bottom of the right end of the outer sleeve 13, and the powder inlet on the inner sleeve 12 corresponds to the powder inlet on the aggregate bucket 8. Under the action of the second motor 7, the aggregate bucket 8 on the inner sleeve 12 and the aggregate bucket 8 can coincide with the powder inlet on the outer sleeve 13.

[0031] A sealing ring is arranged at the intersection between the outer sleeve 13 and the base 11, which plays a sealing role when the aggregate bucket is pulled out of the material conveying channel.

[0032] In the above description, a threaded hole is dug on the displacement rod, which is connected together with the lead screw under the action of the first motor, so that the aggregate bucket can be pulled out of the material conveying channel, that is, the inner wall of the base and the material conveying channel are tightly attached together.

[0033] In the above description, a through hole is dug on the material conveying channel, and the positioning sleeve is fixedly connected with the through hole, and the positioning sleeve is located on the left side of the through hole.

[0034] In the above description, the first motor is located at the bottom position of the left end of the support plate, and the displacement groove is located on the support plate to the right of the first motor.

[0035] In the above description, Figure 1 In the non-powder taking state, Figure 2 In the powder taking state.

[0036] In the above description, under the action of the second motor, the rotation of the aggregate bucket can be driven.

[0037] In the above description, the inner sleeve and the outer sleeve are rotationally connected together, and the outer sleeve and the positioning sleeve are slidably connected together.

[0038] In the above description, the inner and outer sleeves are both made of stainless steel pipes.

[0039] In the above description, when taking powder, the inner wall of the base and the material conveying channel are tightly attached, which plays a limiting and sealing role.

[0040] Working principle:

[0041] Before taking powder, install the sample storage bottle at the powder outlet, start the first motor, make the inner and outer sleeves extend into the material conveying channel, start the second motor, and make the powder inlets on the inner and outer sleeves overlap. At this time, Figure 2 As shown, the sample storage bottle is located at the bottom position of the left end of the aggregate bucket, and the powder taking starts.

[0042] After taking powder, under the action of the first motor, the inner and outer sleeves and the collecting barrel are drawn out from the material conveying channel, the second motor is started, and the powder inlet on the inner sleeve is separated from the powder inlet on the outer sleeve.

[0043] The utility model solves the problem that the traditional coal powder sampling is difficult and poor in representativeness, under the action of the first motor, the collecting barrel can enter or move out of the material conveying channel, under the action of the second motor, the three powder inlets can be overlapped, the powder can be taken quickly, the environment is not polluted, the representativeness of the sample is improved, and the utility model is convenient and easy to operate.

Claims

1. A pulverized coal sampling device for a coal-fired boiler, comprising a material conveying channel (1), a supporting plate (3) and a material collecting bucket (8), characterized in that: The outer part of the material conveying channel (1) is provided with a supporting plate (3), the left end of the supporting plate (3) is provided with a first motor (4), the right end of the first motor (4) is provided with a lead screw (5), the lead screw (5) is threadedly connected with a displacement rod (6), the bottom of the displacement rod (6) is provided with a second motor (7), the right end of the second motor (7) is provided with a material collecting barrel (8), the right end of the material collecting barrel (8) extends into the material conveying channel (1), and an inner sleeve (12) and an outer sleeve (13) are sequentially sleeved outside the right end of the material collecting barrel (8), the material collecting barrel (8), the inner sleeve (12) and the outer sleeve (13) are respectively provided with a powder inlet (15), and the outer wall of the left end of the material collecting barrel (8) is provided with a sample storage bottle (16).

2. The coal pulverizing sampling device for coal-fired boilers according to claim 1, characterized in that: The supporting plate (3) and the material conveying channel (1) are provided with a reinforcing rod (2), the bottom of the left end of the material conveying channel (1) is provided with a displacement groove (301), and the upper end of the displacement rod (6) extends into the displacement groove (301) and is connected with the displacement groove (301) in a sliding mode.

3. The coal pulverizing sampling device for coal-fired boilers according to claim 1, characterized in that: The left end of the lead screw (5) is fixedly connected with the output end of the first motor (4), and the right end of the lead screw (5) is rotatably connected with the outer wall of the material conveying channel (1) through a shaft sleeve.

4. The coal pulverizing sampling device for coal-fired boilers according to claim 1, characterized in that: The material collecting barrel (8) is provided with a spiral sample conveying rod (9), the output end of the second motor (7) is fixedly connected with the material collecting barrel (8) to drive the material collecting barrel (8) to rotate.

5. The coal pulverizing sampling device for coal-fired boilers according to claim 1, characterized in that: The right end of the material collecting barrel (8) extends into the material conveying channel (1), and a base (11) is rotatably connected to the right end of the material collecting barrel (8), the inner sleeve (12) is fixedly connected with the material collecting barrel (8), the outer sleeve (13) is sleeved outside the inner sleeve (12) and is fixedly connected with the base (11), the inner sleeve (12) and the outer sleeve (13) are rotatably connected, the outer sleeve (13) is sleeved with a positioning sleeve (14) outside, the positioning sleeve (14) is fixedly connected with the material conveying channel (1), and the outer sleeve (13) and the positioning sleeve (14) are slidably connected.

6. The coal pulverizing sampling device for coal-fired boilers according to claim 1, characterized in that: The outer wall of the left end of the material collecting barrel (8) is provided with a discharge port (10), and the discharge port (10) is threadedly connected with the sample storage bottle (16).

7. The coal pulverizing sampling device for coal-fired boilers according to claim 5, characterized in that: The outer diameter of the base (11) is greater than the outer diameter of the outer sleeve (13).

8. The coal pulverizing sampling device for coal-fired boilers according to claim 1, characterized in that: The powder inlet on the outer sleeve (13) is located at the bottom of the right end of the outer sleeve (13), the powder inlets on the inner sleeve (12) and the material collecting barrel (8) correspond to the powder inlet on the material collecting barrel (8), and under the action of the second motor (7), the inner sleeve (12), the material collecting barrel (8) and the material collecting barrel (8) on the outer sleeve (13) can coincide with the powder inlet on the outer sleeve (13).

9. The coal pulverizing sampling device for coal-fired boilers according to claim 1, characterized in that: A sealing ring (17) is arranged at the intersection between the outer sleeve (13) and the base (11).

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