Low-concentration automatic smoke dust and flue gas comprehensive tester

Abstract

The utility model relates to the technical field of flue gas detection, and provides a low-concentration automatic smoke dust and flue gas comprehensive tester which comprises a flue gas comprehensive tester body, the inlet end of the flue gas comprehensive tester body is fixedly connected with a gas guide pipe, the inlet end of the gas guide pipe is provided with a cooling mechanism, the inlet end of the cooling mechanism is provided with a smoke inlet mechanism, and the inlet end of the smoke inlet mechanism is provided with a smoke outlet mechanism. The smoke inlet mechanism comprises a mounting box, a smoke inlet assembly is arranged at the inlet end of the mounting box, a smoke exhaust pipe is fixedly connected to the outlet end of the mounting box, a filter screen is fixedly connected to the interior of the mounting box, a reciprocating lead screw is rotationally connected to one end of the inner side of the mounting box, a motor is fixedly mounted on the outer side of the mounting box, and an output shaft of the motor is fixedly connected with the reciprocating lead screw. The reciprocating lead screw is in threaded connection with a movable block, and a cleaning assembly is arranged at one end of the movable block. According to the flue gas comprehensive tester, dust in flue gas is filtered through the filter screen, so that the dust can be prevented from entering the flue gas comprehensive tester body to pollute the flue gas comprehensive tester body, and the problem of difficulty in subsequent cleaning is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke detection, and in particular to a low-concentration automatic smoke and flue comprehensive tester. Background Art

[0002] The automatic smoke and flue gas comprehensive tester uses the Pitot tube isokinetic sampling weight method to capture and the constant potential electrolysis method to quantitatively measure harmful gases. It can be used for environmental protection, health, labor, safety supervision, military, scientific research, education, etc.

[0003] After searching, the Chinese patent publication number CN213842771U discloses "an automatic smoke and flue gas comprehensive tester, including a smoke tester body, a dry separator is arranged on one side of the smoke tester body, a sampling gun is arranged on one side of the dry separator, a sampling tube is arranged at one end of the sampling gun, a flue is arranged on one side of the dry separator, a plastic tube is arranged on the outer surface of one end of the sampling tube, a straight tube is arranged on the outer surface of the plastic tube, a nut is arranged at one end of the straight tube, an air intake pipe is arranged at one end of the nut, a No. 1 fixing cover is arranged on the outer surface of the air intake pipe, a bolt is arranged on the upper end of the No. 1 fixing cover, an embedded ring is arranged at one end of the No. 1 fixing cover, a sealing ring is arranged at one end of the embedded ring, an embedded groove is arranged at one end of the sealing ring, a connecting pipe is arranged on the outer surface of the sealing ring, a No. 2 fixing cover is arranged at one end of the connecting pipe, a through hole is arranged on the upper outer surface of the No. 2 fixing cover, and a No. 3 fixing cover is arranged at one end of the connecting pipe".

[0004] When collecting gas, the above patent inserts the air intake pipe from the No. 1 fixed cover until it enters the flue, and the sealing ring can completely wrap the air intake pipe to ensure good sealing; however, during smoke detection, a large amount of heat usually remains in the smoke, and long-term detection of hot smoke will cause damage to the detection instrument, resulting in a reduction in the service life of the detection instrument, and dust residue will be sticky after smoke passes through the detection pipeline, making cleaning inconvenient. In view of this, the utility model proposes a low-concentration automatic smoke and flue gas comprehensive tester. Utility Model Content

[0005] The utility model provides a low-concentration automatic smoke and flue gas comprehensive tester, which solves the problem in the prior art that smoke and dust enter the instrument and is inconvenient to clean.

[0006] The technical solution of the utility model is as follows: a low-concentration automatic smoke and dust comprehensive tester comprises a smoke comprehensive tester body, the inlet end of the smoke comprehensive tester body is fixedly connected with an air guide pipe, the inlet end of the air guide pipe is provided with a cooling mechanism for cooling the smoke, the inlet end of the cooling mechanism is provided with a smoke inlet mechanism, the smoke inlet mechanism comprises an installation box, the inlet end of the installation box is provided with a smoke inlet assembly inside the installation box for bringing smoke into the installation box, the outlet end of the installation box is fixedly connected with a smoke exhaust pipe, the outlet end of the smoke exhaust pipe is connected with the inlet end of the cooling mechanism, the interior of the installation box is fixedly connected with a filter, one end of the inner side of the installation box is rotatably connected with a reciprocating screw rod, a motor is fixedly installed on the outer side of the installation box, the output shaft of the motor is fixedly connected to the reciprocating screw rod, a movable block is threadedly connected to the reciprocating screw rod, and one end of the movable block is provided with a cleaning assembly for cleaning impurities on the outer wall of the filter screen by translation.

[0007] Preferably, the cleaning assembly includes a mounting plate, the middle portion of the mounting plate is fixedly connected to the movable block, both ends of the mounting plate are slidably connected to a sliding rod that passes through the mounting plate, one end of the two sliding rods is fixedly connected to the same brush plate, and the other ends of the two sliding rods are fixedly connected to a stop block.

[0008] Preferably, the brush assembly further comprises two springs, wherein the two springs are respectively sleeved on the two slide bars, one end of the two springs are in contact with the brush plate, and the other end of the two springs are in contact with the mounting plate.

[0009] Preferably, the smoke inlet assembly includes a smoke inlet pipe, which is fixedly connected to the inlet end of the installation box, and the inner side of the smoke inlet pipe is rotatably connected to a rotating shaft 1, one end of which is fixedly connected to an axial flow impeller, and the other end of the rotating shaft 1 is provided with a transmission member for driving the rotating shaft 1 to rotate by cooperating with the rotation of a reciprocating screw.

[0010] Preferably, the transmission member includes bevel gear 1, which is fixedly connected to the end of rotating shaft 1, and the inner side of the mounting box is rotatably connected to rotating shaft 2, one end of rotating shaft 2 is fixedly connected to bevel gear 2 meshing with bevel gear 1, the other end of rotating shaft 2 is fixedly connected to pulley 1, one end of the reciprocating screw is fixedly connected to pulley 2, and pulley 2 is connected to pulley 1 through a belt drive.

[0011] Preferably, the cooling mechanism includes a heat exchange tube, one end of the heat exchange tube is provided with a cavity one communicating with the smoke exhaust pipe, the other end of the heat exchange tube is provided with a cavity two communicating with the air duct, a heat exchange cavity is provided in the middle of the heat exchange tube, a plurality of heat exchange tubes are fixedly connected to the inner side of the heat exchange cavity, and both ends of the plurality of heat exchange tubes are respectively communicated with the interior of cavity one and cavity two.

[0012] Preferably, the top end of the heat exchange cavity is fixedly connected with a coolant inlet pipe, and the bottom end of the heat exchange cavity is fixedly connected with a coolant outlet pipe.

[0013] Preferably, a plurality of baffles are fixedly connected to the inner side of the heat exchange cavity, and the baffles are equidistantly and staggeredly distributed up and down along the length direction of the heat exchange tube to form an S-shaped channel.

[0014] The working principle and beneficial effects of the utility model are as follows: smoke is introduced into the interior of the installation box through the smoke inlet component, and then dust in the smoke is filtered out through the filter, so that dust can be prevented from entering the interior of the smoke comprehensive tester body to pollute it, and the problem of subsequent cleaning difficulties can be avoided; at the same time, the reciprocating screw rod is driven to rotate by the motor, which makes the movable block drive the cleaning component to move back and forth, so that the cleaning component cleans the impurities on the outer wall of the filter, avoiding the problem that the filter holes of the filter are blocked by impurities and affect the filtration. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0016] Figure 1 This is a structural schematic diagram of a low-concentration automatic smoke and flue gas comprehensive tester of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the smoke inlet mechanism of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the cleaning component of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the smoke inlet assembly of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the cooling mechanism of the utility model.

[0021] In the figure: 1. Flue gas comprehensive tester body; 2. Air guide tube; 3. Cooling mechanism; 31. Heat exchange tube; 32. Cavity 1; 33. Cavity 2; 34. Heat exchange tube; 35. Coolant inlet pipe; 36. Coolant outlet pipe; 37. Baffle; 38. Heat exchange chamber; 4. Smoke inlet mechanism; 41. Installation box; 42. Filter; 43. Motor; 44. Reciprocating screw; 45. Movable block; 46. Cleaning Component; 461, mounting plate; 462, slide bar; 463, brush plate; 464, spring; 465, stopper; 47, smoke inlet component; 471, smoke inlet tube; 472, rotating shaft one; 473, axial flow impeller; 474, transmission part; 4741, bevel gear one; 4742, rotating shaft two; 4743, bevel gear two; 4744, pulley one; 4745, pulley two; 48, smoke exhaust pipe. DETAILED DESCRIPTION

[0022] The following will be combined with 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 of 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.

[0023] like Figure 1~Figure 5 As shown, this embodiment proposes a low-concentration automatic smoke and smoke comprehensive tester, including a smoke comprehensive tester body 1, the inlet end of the smoke comprehensive tester body 1 is fixedly connected to an air guide pipe 2, the inlet end of the air guide pipe 2 is provided with a cooling mechanism 3 for cooling the smoke, the inlet end of the cooling mechanism 3 is provided with a smoke inlet mechanism 4, the smoke inlet mechanism 4 includes an installation box 41, the inlet end of the installation box 41 is provided with a smoke inlet component 47 for bringing smoke into the installation box 41, and the outlet end of the installation box 41 is provided with a smoke inlet component 47 for bringing smoke into the installation box 41. A smoke exhaust pipe 48 is fixedly connected, and the outlet end of the smoke exhaust pipe 48 is connected to the inlet end of the cooling mechanism 3. A filter screen 42 is fixedly connected to the inside of the installation box 41, and a reciprocating screw rod 44 is rotatably connected to one end of the inner side of the installation box 41. A motor 43 is fixedly installed on the outer side of the installation box 41, and the output shaft of the motor 43 is fixedly connected to the reciprocating screw rod 44. A movable block 45 is threadedly connected to the reciprocating screw rod 44, and one end of the movable block 45 is provided with a cleaning component 46 for cleaning impurities on the outer wall of the filter screen 42 by translation.

[0024] The smoke is introduced into the interior of the installation box 41 through the smoke inlet component 47, and then the dust in the smoke is filtered out through the filter 42, so as to prevent dust from entering the interior of the comprehensive smoke tester body 1 and polluting it, thereby avoiding the problem of subsequent cleaning difficulties; at the same time, the reciprocating screw rod 44 is driven to rotate by the motor 43, which makes the movable block 45 drive the cleaning component 46 to move back and forth, so that the cleaning component 46 cleans the impurities on the outer wall of the filter 42, thereby avoiding the problem that the filter holes of the filter 42 are blocked by impurities and affect the filtration.

[0025] Furthermore, the cleaning assembly 46 includes a mounting plate 461, the middle part of the mounting plate 461 is fixedly connected to the movable block 45, both ends of the mounting plate 461 are slidably connected to slide rods 462 that penetrate the mounting plate 461, one end of the two slide rods 462 is fixedly connected to the same brush plate 463, the other ends of the two slide rods 462 are fixedly connected to a stopper 465, the two slide rods 462 are both sleeved with springs 464, one end of the two springs 464 is in contact with the brush plate 463, and the other ends of the two springs 464 are in contact with the mounting plate 461. The reciprocating screw rod 44 is driven to rotate by the motor 43, which makes the movable block 45 drive the mounting plate 461 to move back and forth, and makes the brush plate 463 slide back and forth along the outer wall of the filter screen 42, so as to realize the cleaning of the outer wall of the filter screen 42; wherein, under the elastic force of the spring 464, the brush plate 463 is always in contact with the outer wall of the filter screen 42, so that when the brush plate 463 is worn, it can still contact with the filter screen 42 to realize the cleaning work.

[0026] Furthermore, the smoke inlet assembly 47 includes a smoke inlet tube 471, which is fixedly connected to the inlet end of the installation box 41, and the inner side of the smoke inlet tube 471 is rotatably connected to a rotating shaft 472, one end of which is fixedly connected to an axial flow impeller 473, and the other end of the rotating shaft 472 is provided with a transmission member 474 that drives the rotating shaft 472 to rotate by cooperating with the rotation of the reciprocating screw rod 44, and the transmission member 474 includes a bevel gear 4741, and the bevel gear A 4741 is fixedly connected to the end of the rotating shaft 1 472, and the inner side of the installation box 41 is rotatably connected with the rotating shaft 2 4742, one end of the rotating shaft 2 4742 is fixedly connected with the bevel gear 2 4743 meshing with the bevel gear 1 4741, and the other end of the rotating shaft 2 4742 is fixedly connected with the pulley 1 4744, and one end of the reciprocating screw rod 44 is fixedly connected with the pulley 2 4745, and the pulley 2 4745 and the pulley 1 4744 are connected through a belt transmission. When the motor 43 drives the reciprocating screw rod 44 to rotate, the pulley 2 4745 will rotate synchronously, which makes the pulley 1 4744 drive the rotating shaft 2 4742 to rotate, and also makes the bevel gear 2 4743 drive the bevel gear 1 4741 to rotate synchronously, so that the axial flow impeller 473 rotates at a high speed, so that the internal pressure of the smoke inlet 471 can be reduced to inhale the external smoke, and the overall structure shares a driving source, which greatly saves the use cost.

[0027] Furthermore, the cooling mechanism 3 includes a heat exchange tube 31, one end of which is provided with a cavity 1 32 communicating with the smoke exhaust pipe 48, the other end of the heat exchange tube 31 is provided with a cavity 2 33 communicating with the air guide pipe 2, a heat exchange cavity 38 is provided in the middle of the heat exchange tube 31, a plurality of heat exchange tubes 34 are fixedly connected to the inner side of the heat exchange cavity 38, the two ends of the plurality of heat exchange tubes 34 are respectively connected to the interior of the cavity 1 32 and the cavity 2 33, a coolant inlet pipe 35 is fixedly connected to the top end of the heat exchange cavity 38, a coolant outlet pipe 36 is fixedly connected to the bottom end of the heat exchange cavity 38, a plurality of baffles 37 are fixedly connected to the inner side of the heat exchange cavity 38, and the plurality of baffles 37 are equidistantly staggered up and down along the length direction of the heat exchange tube 31 to form an S-shaped channel. The flue gas is introduced through the cavity 32, and the coolant inlet pipe 35 introduces the coolant to exchange heat with the flue gas inside the heat exchange tube 34, which can achieve the cooling of the flue gas. Several baffles 37 form an S-shaped channel, which can reduce the speed of the coolant, thereby extending the heat exchange time between the coolant and the flue gas, and further improving the cooling effect.

[0028] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A low-concentration automatic smoke and flue gas comprehensive tester, comprising a smoke and flue gas comprehensive tester body (1), an air guide tube (2) fixedly connected to the inlet end of the smoke and flue gas comprehensive tester body (1), a cooling mechanism (3) for cooling the flue gas being arranged at the inlet end of the air guide tube (2), characterized in that: The inlet end of the cooling mechanism (3) is provided with a smoke intake mechanism (4), the smoke intake mechanism (4) comprising an installation box (41), the inlet end of the installation box (41) is provided with a smoke intake assembly (47) for bringing smoke into the installation box (41), the outlet end of the installation box (41) is fixedly connected to a smoke exhaust pipe (48), the outlet end of the smoke exhaust pipe (48) is connected to the inlet end of the cooling mechanism (3), the interior of the installation box (41) is fixedly connected to a filter (42), one end of the inner side of the installation box (41) is rotatably connected to a reciprocating screw (44), a motor (43) is fixedly installed on the outer side of the installation box (41), the output shaft of the motor (43) is fixedly connected to the reciprocating screw (44), a movable block (45) is threadedly connected to the reciprocating screw (44), and one end of the movable block (45) is provided with a cleaning assembly (46) for cleaning impurities on the outer wall of the filter (42) by translation.

2. A low-concentration automatic smoke and flue gas comprehensive tester according to claim 1, characterized in that: The cleaning assembly (46) comprises a mounting plate (461), the middle portion of the mounting plate (461) being fixedly connected to the movable block (45), both ends of the mounting plate (461) being slidably connected to a slide bar (462) penetrating the mounting plate (461), one end of the two slide bars (462) being fixedly connected to the same brush plate (463), and the other ends of the two slide bars (462) being fixedly connected to a stopper (465).

3. A low-concentration automatic smoke and flue gas comprehensive tester according to claim 2, characterized in that: The brush assembly (46) further comprises two springs (464), the two springs (464) being respectively sleeved on the two slide bars (462), one end of the two springs (464) being in contact with the brush plate (463), and the other end of the two springs (464) being in contact with the mounting plate (461).

4. A low-concentration automatic smoke and flue gas comprehensive tester according to claim 1, characterized in that: The smoke inlet assembly (47) comprises a smoke inlet tube (471), the smoke inlet tube (471) being fixedly connected to the inlet end of the installation box (41), the inner side of the smoke inlet tube (471) being rotatably connected to a rotating shaft 1 (472), one end of the rotating shaft 1 (472) being fixedly connected to an axial flow impeller (473), and the other end of the rotating shaft 1 (472) being provided with a transmission member (474) for driving the rotating shaft 1 (472) to rotate by cooperating with the rotation of the reciprocating screw (44).

5. A low-concentration automatic smoke and flue gas comprehensive tester according to claim 4, characterized in that: The transmission member (474) comprises a bevel gear 1 (4741), wherein the bevel gear 1 (4741) is fixedly connected to the end of a rotating shaft 1 (472), a rotating shaft 2 (4742) is rotatably connected to the inner side of the installation box (41), one end of the rotating shaft 2 (4742) is fixedly connected to a bevel gear 2 (4743) meshing with the bevel gear 1 (4741), the other end of the rotating shaft 2 (4742) is fixedly connected to a pulley 1 (4744), one end of the reciprocating screw rod (44) is fixedly connected to a pulley 2 (4745), and the pulley 2 (4745) is connected to the pulley 1 (4744) via a belt transmission.

6. A low-concentration automatic smoke and flue gas comprehensive tester according to claim 1, characterized in that: The cooling mechanism (3) comprises a heat exchange tube (31), one end of the heat exchange tube (31) is provided with a cavity 1 (32) which is communicated with a smoke exhaust pipe (48), the other end of the heat exchange tube (31) is provided with a cavity 2 (33) which is communicated with an air guide pipe (2), a heat exchange cavity (38) is provided in the middle of the heat exchange tube (31), a plurality of heat exchange tubes (34) are fixedly connected to the inner side of the heat exchange cavity (38), and the two ends of the plurality of heat exchange tubes (34) are respectively communicated with the interior of the cavity 1 (32) and the interior of the cavity 2 (33).

7. A low-concentration automatic smoke and flue gas comprehensive tester according to claim 6, characterized in that: The top end of the heat exchange cavity (38) is fixedly connected to a coolant inlet pipe (35), and the bottom end of the heat exchange cavity (38) is fixedly connected to a coolant outlet pipe (36).

8. A low-concentration automatic smoke and flue gas comprehensive tester according to claim 7, characterized in that: A plurality of baffles (37) are fixedly connected to the inner side of the heat exchange cavity (38), and the baffles (37) are equidistantly distributed up and down in an alternating manner along the length direction of the heat exchange cylinder (31) to form an S-shaped channel.

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