CN214503062U - Boiler flying dust sampling device - Google Patents
Boiler flying dust sampling device Download PDFInfo
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- CN214503062U CN214503062U CN202120219942.4U CN202120219942U CN214503062U CN 214503062 U CN214503062 U CN 214503062U CN 202120219942 U CN202120219942 U CN 202120219942U CN 214503062 U CN214503062 U CN 214503062U
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Abstract
The utility model relates to a boiler flying dust sampling device, including sampling case, communicate in the intake pipe of sampling case, can dismantle the collection bottle of connecting in the sampling case below and carry out the mechanism of bleeding to the sampling case, fixedly connected with divide into the baffle in high-pressure chamber and low-pressure chamber with the inner chamber of intake pipe in the intake pipe, the baffle is opened there is the air inlet, the intake pipe is located the lateral wall fixedly connected with support in low-pressure chamber, be provided with the baffle in the low-pressure chamber, be provided with on the support and force the baffle butt in the baffle in order to get into air inlet confined first elastic component, the support is opened there is the through-hole that supplies the flue gas to get into the sampling case, be provided with in the sampling case and carry out filterable filter screen to the flying dust in the flue gas. The application has the potential advantage of reducing the occurrence of spray-back.
Description
Technical Field
The application relates to the technical field of fly ash sampling, in particular to a boiler fly ash sampling device.
Background
The fly ash sampler is also called as fly ash sampling device, the fly ash sampler can sample fly ash at constant speed during production, and the fly ash sampler is used for constant-speed continuous sampling of the fly ash of the flue gas at the tail of a boiler in a power plant (station), so that the carbon content of the fly ash can be accurately detected, and an effective and reliable basis is provided for scientific calculation of the thermal efficiency of the boiler.
With respect to the related art, the inventors consider that the following drawbacks exist: in the sampling process of the existing fly ash sampling device, fly ash is easy to back spray, so that the fly ash entering the sampling device is sprayed back to a flue, the sampling speed is low, and the working efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
In order to effectively reduce the possibility of back-spraying during flying back, the application provides a boiler fly ash sampling device.
The application provides a boiler flying dust sampling device adopts following technical scheme:
the utility model provides a boiler flying dust sampling device, includes the sampling case, communicates in the intake pipe of sampling case, can dismantle the collection bottle of connecting in the sampling case below and carry out the mechanism of bleeding to the sampling case, fixedly connected with divide into the baffle in high-pressure chamber and low-pressure chamber with the inner chamber of intake pipe in the intake pipe, the baffle is opened there is the air inlet, the intake pipe is located the lateral wall fixedly connected with support in low-pressure chamber, be provided with the baffle in the low-pressure chamber, be provided with on the support and force the baffle butt in order to get into the first elastic component of air inlet confined in the baffle, the support is opened there is the through-hole that supplies the flue gas to get into the sampling case, be provided with in the sampling case and carry out filterable filter screen to the flying dust in the flue gas.
Through adopting the above technical scheme, during initial state, first elastic component forces the baffle to plug up the air inlet of baffle, during the sample, insert the intake pipe in the flue gas passageway, bleed the sampling box through air exhaust mechanism, make its inside atmospheric pressure be less than the atmospheric pressure of flue gas passageway, thereby make the baffle slide towards keeping away from the baffle direction, realize opening of air inlet, first elastic component has elastic potential energy this moment, the flue gas passes through the air inlet, the through-hole gets into in the sampling box, the flying dust in the flue gas is blockked by filter screen and is dropped to the collection bottle in, after collection work is accomplished, close air exhaust mechanism, first elastic component forces the baffle to reset and realizes the closure of air inlet, the flying dust can't pass the baffle, can avoid appearing the phenomenon of flying dust back flush, accelerate sampling speed, and work efficiency is improved.
Preferably, the first elastic element is a first compression spring, one end of the first compression spring is fixedly connected to the support, and the other end of the first compression spring is fixedly connected to one side, far away from the partition plate, of the baffle plate.
Through adopting above-mentioned technical scheme, first elastic component is first compression spring setting, the installation of being convenient for and have good spring recovery ability.
Preferably, the air pumping mechanism comprises a support plate fixedly connected to the outer side wall of the sampling box, an air pumping pipe communicated with the sampling box and an air pumping pump communicated with the air pumping pipe, and the air pumping pump is fixedly connected to the support plate.
Through adopting above-mentioned technical scheme, the backup pad provides the installation carrier for the aspiration pump, realizes extracting the gas in the sampling box through aspiration pump, exhaust tube.
Preferably, the bottom wall of the sampling box is connected with a discharge pipe, and the collecting bottle is in threaded connection with the discharge pipe.
Through adopting above-mentioned technical scheme, collect the completion back when the receiving flask, unscrew the receiving flask and realize receiving flask and arrange dismantling being connected of expecting the pipe.
Preferably, the sampling box is rotationally connected with a driving roller and a driven roller which are distributed up and down, the filtering screen is a mesh belt which is wound between the driving roller and the driven roller, the outer wall of the sampling box is provided with a driving motor which drives the driving roller to rotate, and the sampling box is internally provided with a scraper which is abutted against the surface of the filtering screen.
Through adopting above-mentioned technical scheme, filter screen is in the rotation state all the time, and the scraper blade can effectively and smoothly scrape off the flying dust that adsorbs on filter screen and clear away, prevents effectively that the flying dust from causing the jam to filter screen's mesh to make gaseous pump drainage smooth and easy, guarantee the effect of bleeding.
Preferably, the scraper blade is connected in the sampling box in a sliding manner, and the sampling box is provided with a second elastic piece which forces the scraper blade to abut against the surface of the filter screen.
Through adopting above-mentioned technical scheme, the second elastic component realizes that the scraper blade keeps to support tightly in the surface of filter screen all the time to effectively scrape to the fly ash that adsorbs on filter screen and fall and clear away.
Preferably, the sampling box is internally provided with a sliding groove, the scraper blade is convexly provided with a sliding block connected to the sliding groove in a sliding manner, the second elastic part is a second compression spring, one end of the second compression spring is fixedly connected to the inner wall of the sliding groove, the other end of the second compression spring is fixedly connected to the sliding block, and the scraper blade is abutted to the surface of the filter screen, so that the second compression spring is in a compression state.
Through adopting above-mentioned technical scheme, be provided with spout and slider, realize the scraper blade in the slidingtype assembly of sampling case, second compression spring is in compression state for the scraper blade supports tightly in filter sieve net surface all the time.
Preferably, sealing belts are fixed on the inner walls of the periphery of the sampling box, the sealing belts are lapped between the filtering screen and the inner wall of the sampling box, and the pores between the filtering screen and the inner wall of the sampling box are sealed.
Through adopting above-mentioned technical scheme, be provided with the sealing strip, it is sealed with the hole between filter screen and the sampling case inner wall, improves the leakproofness between sampling case and the filter screen, prevents that the flying dust from getting into air exhaust mechanism from the hole between filter screen and the sampling case inner wall.
In summary, the present application includes at least one of the following beneficial technical effects:
during sampling, the air inlet pipe is inserted into the flue gas channel, the sampling box is pumped by the air pumping mechanism, so that the internal air pressure of the sampling box is smaller than that of the flue gas channel, the baffle slides towards the direction away from the partition plate, the opening of the air inlet is realized, at the moment, the first elastic part has elastic potential energy, the flue gas enters the sampling box through the air inlet and the through hole, fly ash in the flue gas is blocked by the filter screen and falls into the collecting bottle, after the collecting work is finished, the air pumping mechanism is closed, the first elastic part forces the baffle to reset, the air inlet is sealed, the fly ash cannot penetrate through the partition plate, the phenomenon of fly ash back spraying can be avoided, the sampling speed is increased, and the working efficiency is improved;
the filter screen is always in a rotating state, and the scraper can effectively and smoothly scrape and remove the fly ash adsorbed on the filter screen, so that the fly ash is effectively prevented from blocking meshes of the filter screen, the gas is pumped and discharged smoothly, and the air exhaust effect is ensured.
Drawings
Fig. 1 is a schematic view of the internal structure of an intake pipe and a sampling tank.
Fig. 2 is a schematic structural view of an intake pipe.
Fig. 3 is a schematic view of the installation structure of the scraper and the sampling box.
Description of reference numerals: 1. a sampling box; 11. a drive roll; 12. a driven roller; 13. filtering the screen; 14. sealing tape; 15. a squeegee; 151. a slider; 16. a chute; 17. a second elastic member; 18. a discharge pipe; 2. an air inlet pipe; 21. a high pressure chamber; 22. a low pressure chamber; 23. a partition plate; 24. an air inlet; 25. a baffle plate; 26. a support; 27. a first elastic member; 28. a through hole; 3. a collection bottle; 4. an air extraction mechanism; 41. a support plate; 42. an air exhaust pipe; 43. an air pump.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses boiler flying dust sampling device, refer to FIG. 1, including sampling case 1, communicate in sampling case 1 intake pipe 2, can dismantle the collection bottle 3 of connecting in sampling case 1 below and the mechanism 4 of bleeding that bleeds to sampling case 1, intake pipe 2, the mechanism 4 of bleeding are located the relative both sides wall of sampling case 1 respectively. The air-extracting mechanism 4 comprises a supporting plate 41 fixedly connected to the outer side wall of the sampling box 1, an air-extracting tube 42 communicated with the sampling box 1, and an air-extracting pump 43 communicated with the air-extracting tube 42, wherein the air-extracting pump 43 is fixedly connected to the supporting plate 41.
Referring to fig. 1 and 2, a partition plate 23 for dividing an inner cavity of the air inlet pipe 2 into a high pressure cavity 21 and a low pressure cavity 22 is fixedly connected in the air inlet pipe 2, and an air inlet 24 is formed through the partition plate 23. The intake pipe 2 is located the inside wall fixedly connected with support 26 in low-pressure chamber 22, is provided with the baffle 25 that is located between support 26 and the baffle 23 in the low-pressure chamber 22, is provided with on the support 26 and forces baffle 25 to abut in baffle 23 in order to with the first elastic component 27 of air inlet 24 confined, and first elastic component 27 is the first compression spring of one end fixed connection in support 26, and the other end fixed connection of first compression spring is in the one side that baffle 25 kept away from baffle 23. The support 26 is provided with a through hole 28 for allowing flue gas to enter the sampling box 1, and the through hole 28 is provided with a plurality of through holes which are uniformly distributed around the axis of the support 26. In the initial state, the first elastic member 27 forces the blocking plate 25 to block the air inlet 24 of the partition 23.
Referring to fig. 1, a filter screen 13 for filtering fly ash in flue gas is arranged in a sampling box 1, a driving roller 11 and a driven roller 12 which are distributed up and down are rotationally connected in the sampling box 1, and two ends of the driving roller 11 and the driven roller 12 are hermetically and rotationally connected to the other two opposite inner side walls of the sampling box 1. The filtering screen 13 is a mesh belt wound between the driving roller 11 and the driven roller 12, the outer wall of the sampling box 1 is provided with a driving motor for driving the driving roller 11 to rotate, an output shaft of the driving motor is coaxially and fixedly connected to the driving roller 11, and the driving motor is fixedly connected to the outer side wall of the sampling box 1.
Referring to fig. 1 and 3, a scraper 15 abutting against the surface of the filter screen 13 is provided in the sampling box 1, the scraper 15 is slidably connected in the sampling box 1, and the longitudinal direction of the scraper 15 is parallel to the axial direction of the drive roll 11. The inner wall of the sampling box 1 is horizontally provided with a sliding groove 16, the scraper 15 is convexly provided with a sliding block 151 connected with the sliding groove 16 in a sliding manner, the sampling box 1 is provided with a second elastic part 17 forcing the scraper 15 to abut against the surface of the filter screen 13, the second elastic part 17 is a second compression spring with one end fixedly connected with the inner wall of the sliding groove 16, the other end of the second compression spring is fixedly connected with the sliding block 151, and when the scraper 15 abuts against the surface of the filter screen 13, the second compression spring is in a compression state.
Referring to fig. 1, a sealing tape 14 is fixed to the inner wall of the circumference of the sampling box 1, and the sealing tape 14 is lapped between the filter screen 13 and the inner wall of the sampling box 1 to seal the gap between the filter screen 13 and the inner wall of the sampling box 1. The diapire of sampling box 1 is connected with row material pipe 18, arranges that the connector of material pipe 18 and sampling box 1 is located filter screen 13 and is close to inlet pipe one side, and collecting bottle 3 thread seal connects in row material pipe 18.
The implementation principle of the boiler fly ash sampling device in the embodiment of the application is as follows: during sampling, insert intake pipe 2 in the flue gas passageway, start aspiration pump 43 and bleed to sampling box 1 through exhaust tube 42, make its inside atmospheric pressure be less than flue gas passageway's atmospheric pressure, thereby make baffle 25 slide towards keeping away from baffle 23 direction, realize opening of air inlet 24, first spring is in compression state and has elastic potential energy this moment, the flue gas passes through air inlet 24, through-hole 28 gets into in sampling box 1, the flying dust in the flue gas is blockked by filter screen 13 and is dropped to collecting bottle 3 in, after the collection completion, close aspiration pump 43, first compression spring forces baffle 25 to reset and realizes the closure of air inlet 24, the flying dust can't pass baffle 23, can avoid appearing the phenomenon of flying dust backspray, accelerate sampling speed, and the work efficiency is improved.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. A boiler flying dust sampling device which is characterized in that: comprises a sampling box (1), an air inlet pipe (2) communicated with the sampling box (1), a collecting bottle (3) detachably connected below the sampling box (1) and an air exhaust mechanism (4) for exhausting air from the sampling box (1), a clapboard (23) which divides the inner cavity of the air inlet pipe (2) into a high-pressure cavity (21) and a low-pressure cavity (22) is fixedly connected in the air inlet pipe (2), the clapboard (23) is provided with an air inlet (24), the side wall of the air inlet pipe (2) positioned in the low-pressure cavity (22) is fixedly connected with a bracket (26), a baffle plate (25) is arranged in the low-pressure cavity (22), a first elastic piece (27) which forces the baffle plate (25) to abut against the partition plate (23) to seal the air inlet (24) is arranged on the bracket (26), the bracket (26) is provided with a through hole (28) for the flue gas to enter the sampling box (1), and a filter screen (13) for filtering fly ash in the flue gas is arranged in the sampling box (1).
2. The boiler fly ash sampling device of claim 1, wherein: the first elastic piece (27) is a first compression spring with one end fixedly connected to the support (26), and the other end of the first compression spring is fixedly connected to one side, away from the partition plate (23), of the baffle plate (25).
3. The boiler fly ash sampling device of claim 1, wherein: the air extraction mechanism (4) comprises a support plate (41) fixedly connected to the outer side wall of the sampling box (1), an air extraction pipe (42) communicated with the sampling box (1) and an air extraction pump (43) communicated with the air extraction pipe (42), and the air extraction pump (43) is fixedly connected to the support plate (41).
4. The boiler fly ash sampling device of claim 1, wherein: the bottom wall of sampling case (1) is connected with row material pipe (18), receiving flask (3) threaded connection is in row material pipe (18).
5. The boiler fly ash sampling device of claim 1, wherein: the utility model discloses a sampling device, including sampling case (1), filter screen cloth (13), sampling case (1) internal rotation is connected with drive roll (11) and driven voller (12) that are distribution from top to bottom, filter screen cloth (13) are around locating the guipure between drive roll (11) and driven voller (12), sampling case (1) outer wall is provided with drive roll (11) pivoted driving motor, be provided with scraper blade (15) of butt in filter screen cloth (13) surface in sampling case (1).
6. The boiler fly ash sampling device of claim 5, wherein: the scraper blade (15) slides and connects in sampling case (1), sampling case (1) is provided with and forces scraper blade (15) to support in filtering screen (13) surperficial second elastic component (17).
7. The boiler fly ash sampling device of claim 6, wherein: sampling case (1) is seted up in spout (16), scraper blade (15) protrusion is provided with slide and connects slider (151) in spout (16), second elastic component (17) are the second compression spring of one end fixed connection in spout (16) inner wall, and second compression spring's other end fixed connection is in slider (151), and scraper blade (15) butt is in compression state when filtering screen (13) surface.
8. The boiler fly ash sampling device of claim 5, wherein: sealing strips (14) are fixed on the inner walls of the periphery of the sampling box (1), the sealing strips (14) are lapped between the filtering screen (13) and the inner wall of the sampling box (1), and pores between the filtering screen (13) and the inner wall of the sampling box (1) are sealed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120219942.4U CN214503062U (en) | 2021-01-26 | 2021-01-26 | Boiler flying dust sampling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120219942.4U CN214503062U (en) | 2021-01-26 | 2021-01-26 | Boiler flying dust sampling device |
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| Publication Number | Publication Date |
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| CN214503062U true CN214503062U (en) | 2021-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120219942.4U Active CN214503062U (en) | 2021-01-26 | 2021-01-26 | Boiler flying dust sampling device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114903135A (en) * | 2022-03-18 | 2022-08-16 | 山东天博食品配料有限公司 | Furnace is smoked to uninterrupted smoke |
-
2021
- 2021-01-26 CN CN202120219942.4U patent/CN214503062U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114903135A (en) * | 2022-03-18 | 2022-08-16 | 山东天博食品配料有限公司 | Furnace is smoked to uninterrupted smoke |
| CN114903135B (en) * | 2022-03-18 | 2023-09-15 | 山东天博食品配料有限公司 | Uninterrupted smoking oven |
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