Novel dust concentration calibration device

Abstract

The utility model provides a novel dust concentration calibration device which comprises a compressor, a gas tank, a feeder, a calibration tank assembly and a bag-type dust collector, a gas outlet of the compressor is connected with a gas inlet pipeline of the gas tank, and the calibration tank assembly comprises a calibration tank. A standard dust sampler and a dust concentration detector are fixedly installed at openings in the two sides of the upper end of the calibration tank in a sealed mode respectively, gas uniformizing plates are fixedly installed on the upper middle side of the interior of the calibration tank in an up-down parallel mode, and through holes are formed in the two gas uniformizing plates in a dot matrix mode. Due to the arrangement of the annular mounting frame, the central mounting seat, the connecting rod, the rotating shaft and the fan blades, the dispersion uniformity of dust in a space for testing the dust concentration can be improved.

Description

Technical Field

[0001] This utility model belongs to the field of dust detection technology, and in particular relates to a novel dust concentration calibration device. Background Technology

[0002] A dust concentration calibration device is a tool used to calibrate dust detection equipment to ensure the accuracy of its measurement results. In some manufacturing fields, dust concentration has strict requirements for product quality, experimental results, and production safety. Therefore, it is necessary to use a dust concentration calibration device to ensure the accuracy of dust detection results. The existing dust concentration calibration system includes an air compressor storage tank, a quantitative dust feeder, a dust dilution chamber, a dust cloud testing chamber, a bag filter chamber, and a fan connected in sequence. The air outlet of the air compressor is connected to the air inlet at the bottom of the storage tank. The air outlet at the top of the storage tank is connected to the quantitative dust feeder through one branch pipe and to the dust dilution chamber through another branch pipe. Each pipe is equipped with a flow control valve.

[0003] In this existing dust concentration calibration device, the dust and the dilution air enter the dust cloud test chamber from the middle and the sides, respectively. Even after passing through the screen rectifier plate, the uniformity of dust dispersion inside the dust cloud test chamber is low. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a novel dust concentration calibration device, which improves the uniformity of dust dispersion in the space used for testing dust concentration.

[0005] This utility model is achieved through the following technical solution:

[0006] A novel dust concentration calibration device includes a compressor, a gas tank, a feeder, a calibration tank assembly, and a bag filter. The compressor's outlet is connected to the gas tank's inlet pipe. The calibration tank assembly includes a calibration tank. A standard dust sampler and a dust concentration detector are respectively sealed and fixedly installed at the openings on both sides of the upper end of the calibration tank. Air equalization plates are fixedly installed side-by-side on the upper and middle sides of the calibration tank's interior. Both air equalization plates have through holes arranged in a dot matrix pattern, and the through holes of the two air equalization plates are staggered. Side air inlets are opened on both sides of the lower end of the calibration tank, and a main air inlet is opened in the middle of the lower side of the calibration tank. A mixing frame assembly is installed on the lower side of the calibration tank's interior. The mixing frame assembly includes an annular mounting frame, with a central mounting seat at the lower part of the annular mounting frame. Connecting rods are integrally installed around the annular mounting frame and the central mounting seat. A rotating shaft is installed on a sealed bearing on the lower side of the central mounting seat, and a fan blade is fixedly installed at the lower end of the rotating shaft.

[0007] Preferably, the annular mounting bracket is fixedly installed inside the lower side of the calibration tank.

[0008] Preferably, two pipelines are provided between the gas outlet of the gas tank and the calibration tank, one of which is connected to the main air inlet, and the discharge port of the feeder is connected to the middle pipeline of the main air inlet.

[0009] Preferably, the other pipeline is configured with two branch pipelines at one end near the side air inlet, and the two branch pipelines are respectively connected to the two side air inlets.

[0010] Preferably, a hopper is installed at the upper feed inlet of the feeder.

[0011] Preferably, the outlet of the calibration tank is connected to the inlet pipe of the bag filter.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. In this utility model, the arrangement of the annular mounting frame, central mounting base, connecting rod, rotating shaft, and fan blades is beneficial to improving the uniformity of dust dispersion in the space used for testing dust concentration.

[0014] 2. In this utility model, the hopper and feeder are designed to facilitate the quantitative conveying of powder for testing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a structural schematic diagram of the calibration tank assembly of this utility model.

[0017] Figure 3 This is a structural schematic diagram of the gas mixing frame assembly of this utility model.

[0018] In the picture:

[0019] 1. Compressor; 2. Gas tank; 3. Hopper; 4. Feeder; 5. Calibration tank assembly; 6. Baghouse dust collector; 51. Calibration tank; 52. Standard dust sampler; 53. Dust concentration detector; 54. Gas distribution plate; 55. Gas mixing frame assembly; 56. Side air inlet; 57. Main air inlet; 551. Annular mounting bracket; 552. Central mounting base; 553. Connecting rod; 554. Rotating shaft; 555. Fan blade. Detailed Implementation

[0020] The present invention will now be described in detail with reference to the accompanying drawings, as shown below. Figure 1 and attached Figure 2 As shown, a novel dust concentration calibration device includes a compressor 1, a gas tank 2, a feeder 4, a calibration tank assembly 5, and a bag filter 6. A pressure gauge is installed on the gas tank 2, and the outlet of the compressor 1 is connected to the inlet pipe of the gas tank 2.

[0021] In this implementation plan, in conjunction with the appendix Figure 2 As shown, the calibration tank assembly 5 includes a calibration tank 51. A standard dust sampler 52 and a dust concentration detector 53 are respectively sealed and fixedly installed at the openings on both sides of the upper end of the calibration tank 51. A gas equalization plate 54 is fixedly installed side by side on the upper side inside the calibration tank 51. The two gas equalization plates 54 are provided with through holes in a dot matrix pattern inside, and the through holes of the two gas equalization plates 54 are staggered. Side air inlets 56 are provided on both sides of the lower end of the calibration tank 51, and a main air inlet 57 is provided in the middle of the lower side of the calibration tank 51. A gas mixing frame assembly 55 is installed on the lower side inside the calibration tank 51.

[0022] In this implementation plan, in conjunction with the appendix Figure 3 As shown, the mixing frame assembly 55 includes an annular mounting frame 551, with a central mounting seat 552 at the lower part of the annular mounting frame 551. Connecting rods 553 are integrally provided around the annular mounting frame 551 and the central mounting seat 552. A rotating shaft 554 is installed on the lower sealed bearing of the central mounting seat 552, and a fan blade 555 is fixedly installed at the lower end of the rotating shaft 554. When dust and dilution gas enter the calibration tank 51, the gas flow drives the fan blade 555 to rotate, generating a vortex that mixes the dust and dilution air. The annular mounting frame 551, the central mounting seat 552, and the connecting rods 553 serve to fix the rotating shaft 554. After the mixed dust gas passes through the gas equalization plate 54, the dust and gas are mixed more evenly. Then, the dust concentration is detected and calibrated using a standard dust sampler 52 and a dust concentration detector 53, resulting in more accurate calibration.

[0023] In this embodiment, specifically, the annular mounting bracket 551 is fixedly installed inside the lower side of the calibration tank 51.

[0024] In this embodiment, specifically, two pipelines are provided between the air outlet of the gas tank 2 and the calibration tank 51, one of which is connected to the main air inlet 57, and the discharge port of the feeder 4 is connected to the middle pipeline of the main air inlet 57.

[0025] In this embodiment, specifically, one end of another pipeline near the side air inlet 56 is configured as two branch pipelines, and the two branch pipelines are respectively connected to the two side air inlets 56.

[0026] In this embodiment, specifically, a hopper 3 is installed at the upper feed inlet of the feeder 4.

[0027] In this embodiment, specifically, the air outlet of the calibration tank 51 is connected to the air inlet pipe of the bag filter 6.

[0028] In this embodiment, specifically, valves are installed in both pipelines between the gas outlet of gas tank 2 and calibration tank 51.

[0029] Working principle

[0030] In this invention, compressor 1 fills gas tank 2 with gas, gas tank 2 delivers gas into calibration tank 51, powder for testing is loaded into hopper 3, feeder 4 delivers powder in a quantitative manner, and when the gas in gas tank 2 passes through the lower part of feeder 4, it delivers dust into calibration tank 51.

[0031] Any technical solution that achieves the above-mentioned technical effects by utilizing the technical solution described in this utility model, or by designing a similar technical solution inspired by the technical solution of this utility model, falls within the protection scope of this utility model.

Claims

1. A novel dust concentration calibration device, characterized in that, The novel dust concentration calibration device includes a compressor (1), a gas tank (2), a feeder (4), a calibration tank assembly (5), and a bag filter (6). The outlet of the compressor (1) is connected to the inlet of the gas tank (2). The calibration tank assembly (5) includes a calibration tank (51). A standard dust sampler (52) and a dust concentration detector (53) are respectively sealed and fixedly installed at the openings on both sides of the upper end of the calibration tank (51). A gas equalization plate (54) is fixedly installed side by side on the upper side of the interior of the calibration tank (51). Both gas equalization plates (54) have through holes in a dot matrix pattern inside, and the through holes of the two gas equalization plates (54) are staggered. The calibration tank (51) has side air inlets (56) on both sides of its lower end, and a main air inlet (57) in the middle of its lower side. A mixing frame assembly (55) is installed inside the lower side of the calibration tank (51). The mixing frame assembly (55) includes an annular mounting frame (551). A central mounting seat (552) is provided at the lower part of the annular mounting frame (551). A connecting rod (553) is integrally provided around the annular mounting frame (551) and the central mounting seat (552). A rotating shaft (554) is installed on the sealed bearing at the lower side of the central mounting seat (552). A fan blade (555) is fixedly installed at the lower end of the rotating shaft (554).

2. The novel dust concentration calibration device as described in claim 1, characterized in that, The annular mounting bracket (551) is fixedly installed on the lower side of the inside of the calibration tank (51).

3. The novel dust concentration calibration device as described in claim 1, characterized in that, Two pipelines are provided between the outlet of the gas tank (2) and the calibration tank (51), one of which is connected to the main air inlet (57), and the outlet of the feeder (4) is connected to the middle pipeline of the pipeline.

4. The novel dust concentration calibration device as described in claim 1, characterized in that, The other pipeline is configured with two branch pipelines at one end near the side air inlet (56), and the two branch pipelines are respectively connected to the two side air inlets (56).

5. The novel dust concentration calibration device as described in claim 1, characterized in that, A hopper (3) is installed at the upper feed inlet of the feeder (4).

6. The novel dust concentration calibration device as described in claim 1, characterized in that, The outlet of the calibration tank (51) is connected to the inlet pipe of the bag filter (6).

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