Integrated smoke dust and flue gas sampling pipe

Abstract

The utility model relates to the technical field of smoke dust sampling, in particular to an integrated smoke dust and flue gas sampling pipe which comprises a sampling pipe, the end part of the sampling pipe is arc-shaped, a plurality of sampling holes are formed in the sampling pipe, a first open slot communicated with each sampling hole is formed in the sampling pipe, a sliding plate is slidably connected in the first open slot, and the sliding plate is arranged in the sampling pipe. A sealing mechanism is arranged on the sliding plate and the sampling pipe and is used for locking the sliding plate so as to seal the sampling hole; the sampling pipe is internally provided with an anti-suck-back mechanism, the anti-suck-back mechanism comprises a supporting table and a closing plate which are fixedly arranged in the sampling pipe, a first spring is fixedly arranged in the supporting table, the end part of the first spring is fixedly connected with a locking ball, and the locking ball completely abuts against the closing opening in the sealing plate under the action of the first spring. By arranging the suck-back prevention mechanism, the exhaust pipe is prevented from sucking back smoke dust and smoke in the sampling pipe, and the measurement accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of smoke sampling, in particular to an integrated smoke and flue gas sampling tube. Background Art

[0002] Flue gas emitted from fixed pollution sources such as thermal power plants, chemical plants and cement plants is one of the important sources of atmospheric pollutants. Its emission volume and emission gas composition need to be strictly monitored by the environmental protection department. At present, smoke sampling guns are generally used to sample smoke or toxic substances in pollution sources, and then the smoke or harmful substances collected by the smoke sampling gun are transmitted to the flue gas analyzer for analysis.

[0003] The horizontal section of the exhaust pipe is usually selected as the smoke and flue gas sampling point. Since the gas in the exhaust pipe is in a discharge state, that is, the exhaust pipe is under negative pressure, the smoke and flue gas in the sampling gun will flow back into the exhaust pipe after the vacuum pump is turned off. In addition, the concentration of the horizontal section of the exhaust pipe is inconsistent at different heights. For accurate measurement, multiple sampling holes are usually provided. As a result, when the sampling gun is inserted into the exhaust pipe, smoke and flue gas enter the upper sampling hole, causing the overall smoke and flue gas content to be higher, thereby affecting the accuracy of the measurement data. Utility Model Content

[0004] The purpose of the utility model is to provide an integrated smoke and flue gas sampling tube to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An integrated smoke and flue gas sampling tube comprises a sampling tube, the end of the sampling tube is arranged in an arc shape, and a plurality of sampling holes are provided on the sampling tube, a first slot connected to each sampling hole is provided in the sampling tube, a sliding plate is slidably connected in the first slot, a sealing mechanism is provided on the sliding plate and the sampling tube, and the sealing mechanism is used to lock the sliding plate to close the sampling holes; an anti-back-inhalation mechanism is also provided in the sampling tube, and the anti-back-inhalation mechanism comprises a support platform and a closing plate fixed in the sampling tube, a first spring is fixed in the support platform, a locking ball is fixedly connected to the end of the first spring, and the locking ball is completely abutted against the closing opening on the sealing plate under the action of the first spring.

[0007] Furthermore, the sealing mechanism includes a fixing rod fixedly connected to the sealing plate, a protrusion is fixedly provided on the inner wall of the sampling tube, a first sliding groove corresponding to the fixing rod is opened on the protrusion, and a second sliding groove connected to the first sliding groove is also opened on the sampling tube and the protrusion, a locking rod is slidably connected in the second sliding groove, one end of the locking rod extends into the locking groove on the fixing rod to lock the sealing plate, and the other end of the locking rod is fixedly connected to an unlocking rod, and the end of the unlocking rod extends out of the sampling rod, a second spring is fixedly provided between the locking rod and the side wall of the second sliding groove, and a plurality of third springs are fixedly connected between the sliding plate and the side wall of the first slot.

[0008] Furthermore, the sealing mechanism also includes a rotating shaft rotatably arranged on the sampling tube, one end of the rotating shaft located inside the sampling tube is fixedly connected to a transmission rod, a transmission plate corresponding to the rotating rod is fixedly provided on the sealing plate, and one end of the rotating shaft located outside the sampling tube is fixedly connected to a handle.

[0009] Furthermore, a cushion is provided at the closed opening.

[0010] Furthermore, the plurality of sampling holes are arranged vertically at equal intervals.

[0011] In the above technical solution, the utility model provides an integrated smoke and flue gas sampling tube with the following beneficial effects:

[0012] 1. Through the anti-back-suction mechanism, when the vacuum pump is turned off, the negative pressure of the exhaust pipe causes a pressure difference on both sides of the closing plate, and the pressure difference causes the locking ball to tightly abut against the closing port, thereby preventing the exhaust pipe from back-sucking the smoke and flue gas in the sampling tube and affecting the measured data; and the anti-back-suction mechanism does not affect the vacuum pump from sucking the smoke and flue gas in the exhaust pipe into the sampling tube, that is, the anti-back-suction mechanism plays a role similar to a one-way valve.

[0013] 2. The sampling hole is closed by the sliding plate so that when the sampling tube is inserted into the exhaust pipe, smoke and flue gas will not enter the sampling tube through the sampling hole, thereby improving the accuracy of the measurement.

[0014] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

[0015] This application document provides an overview of various implementations or examples of the technology described in the present disclosure, and is not a comprehensive disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 The overall structural diagram provided for the embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the internal structure provided for an embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the structure of a sliding plate provided in an embodiment of the utility model;

[0020] Figure 4 A schematic cross-sectional view of the anti-backflow mechanism provided in an embodiment of the utility model;

[0021] Figure 5 This is a schematic cross-sectional structural diagram of a sealing mechanism provided in an embodiment of the utility model.

[0022] Description of reference numerals:

[0023] 1. Sampling tube; 11. Sampling hole; 12. First slot; 2. Sliding plate; 3. Support platform; 31. Closing plate; 32. First spring; 33. Locking ball; 34. Closing mouth; 4. Fixing rod; 41. Bump; 42. First slide groove; 43. Second slide groove; 44. Locking rod; 45. Locking slot; 46. Unlocking rod; 47. Second spring; 48. Third spring; 5. Rotating shaft; 51. Transmission rod; 52. Handle; 53. Transmission plate. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0025] In one embodiment provided by the present utility model, please refer to Figure 1-5An integrated smoke and flue gas sampling tube 1 comprises a sampling tube 1, the end of the sampling tube 1 is arranged in an arc shape, and a plurality of sampling holes 11 are provided on the sampling tube 1, a first slot 12 connected to each sampling hole 11 is provided in the sampling tube 1, a sliding plate 2 is slidably connected in the first slot 12, a sealing mechanism is provided on the sliding plate 2 and the sampling tube 1, and the sealing mechanism is used to lock the sliding plate 2 to close the sampling holes 11; an anti-backflow mechanism is also provided in the sampling tube 1, and the anti-backflow mechanism comprises a support platform 3 and a closing plate 31 fixedly arranged in the sampling tube 1, a first spring 32 is fixedly arranged in the support platform 3, a locking ball 33 is fixedly connected at the end of the first spring 32, and the locking ball 33 is completely abutted with the closing opening 34 on the sealing plate under the action of the first spring 32. The sampling tube 1 is connected to a smoke and flue gas measuring instrument (not shown in the figure), and the smoke and flue gas in the exhaust pipe enters each measuring instrument through the sampling tube 1 to complete data measurement.

[0026] Through the anti-backflow mechanism, when the vacuum pump is turned off, the negative pressure of the exhaust pipe causes a pressure difference on both sides of the closing plate 31, and the pressure difference causes the locking ball 33 to tightly abut against the closing port 34, thereby preventing the exhaust pipe from backflowing the smoke and flue gas in the sampling tube 1 and affecting the measured data; and the anti-backflow mechanism does not affect the vacuum pump from sucking the smoke and flue gas in the exhaust pipe into the sampling tube 1, that is, the anti-backflow mechanism plays a role similar to a one-way valve. Through the sliding plate 2, the sampling hole 11 is closed, so that when the sampling tube 1 is extended into the exhaust pipe, the smoke and flue gas will not enter the sampling tube 1 through the sampling hole 11, thereby improving the accuracy of the measurement.

[0027] Further, the sealing mechanism includes a fixed rod 4 fixedly connected to the sealing plate, a protrusion 41 fixedly provided on the inner wall of the sampling tube 1, a first slide groove 42 corresponding to the fixed rod 4 is provided on the protrusion 41, a second slide groove 43 communicating with the first slide groove 42 is also provided on the sampling tube 1 and the protrusion 41, a locking rod 44 is slidably connected in the second slide groove 43, one end of the locking rod 44 extends into the locking groove 45 on the fixed rod 4 to lock the sealing plate, and the other end of the locking rod 44 is fixedly connected to an unlocking rod 46, the end of the unlocking rod 46 extends out of the sampling rod, a second spring 47 is fixedly provided between the locking rod 44 and the side wall of the second slide groove 43, and a plurality of third springs 48 are fixedly connected between the sliding plate 2 and the side wall of the first slot 12. The connection between the unlocking rod 46 and the sampling tube 1 is sealed.

[0028] When the sampling hole 11 needs to be opened, the unlocking rod 46 is pulled outward, so that the unlocking rod 46 drives the locking rod 44 to move out of the locking groove 45, and the second spring 47 is compressed at the same time. Under the rebound effect of the third spring 48, the sliding plate 2 slides quickly to open the sampling hole 11. When the sampling hole 11 is closed, the unlocking rod 46 is pulled, and the fixed rod 4 slides along the first sliding groove 42 until the locking rod 44 corresponds to the locking groove 45. The locking rod 44 extends into the locking groove 45 in the fixed rod 4 to lock the sliding plate 2. The second spring 47 is used to keep the locking rod 44 inserted in the locking groove 45.

[0029] Furthermore, the sealing mechanism further includes a rotating shaft 5 rotatably arranged on the sampling tube 1, a transmission rod 51 is fixedly connected to one end of the rotating shaft 5 located inside the sampling tube 1, a transmission plate 53 corresponding to the rotating rod is fixedly arranged on the sealing plate, and a handle 52 is fixedly connected to one end of the rotating shaft 5 located outside the sampling tube 1. The connection between the rotating shaft 5 and the sampling tube 1 is sealed.

[0030] The rotating handle 52 drives the transmission rod 51 to rotate through the rotating shaft 5, and the transmission rod 51 rotates and abuts against the transmission plate 53, so that the sliding plate 2 moves along the first slot 12 toward the protrusion 41 until the locking slot 45 on the fixing rod 4 is plugged into the locking rod 44.

[0031] Furthermore, a cushion is provided at the closed opening 34. The cushion further enhances the sealing performance of the closed opening 34 and the locking ball 33, and further reduces the back suction of smoke and dust.

[0032] Furthermore, the plurality of sampling holes 11 are arranged vertically and equidistantly, so as to collect smoke and dust at different heights in the exhaust pipe, thereby improving the sampling effect and enhancing the accuracy of the data.

[0033] Working principle:

[0034] Insert the sampling tube 1 into the exhaust pipe, pull the unlocking rod 46 outward, so that the unlocking rod 46 drives the locking rod 44 to move out of the locking groove 45, and compress the second spring 47 at the same time. Under the rebound effect of the third spring 48, the sliding plate 2 slides quickly to open the sampling hole 11 and start sampling. After the sampling is completed, the rotating handle 52 drives the transmission rod 51 to rotate through the rotating shaft 5, and the transmission rod 51 rotates and abuts against the transmission plate 53, so that the sliding plate 2 moves along the first slot 12 toward the direction of the protrusion 41, pull the unlocking rod 46, and slide the fixed rod 4 along the first sliding groove 42 until the locking rod 44 corresponds to the locking groove 45, and the locking rod 44 extends into the locking groove 45 in the fixed rod 4 to lock the sliding plate 2. The anti-back-inhalation mechanism can prevent the exhaust pipe from back-inhaling the smoke and flue gas in the sampling tube 1 after the sampling is completed.

[0035] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An integrated smoke and flue gas sampling tube, comprising a sampling tube (1), Features: The end of the sampling tube (1) is arranged in an arc shape, and a plurality of sampling holes (11) are provided on the sampling tube (1). A first slot (12) communicating with each sampling hole (11) is provided in the sampling tube (1), a sliding plate (2) is slidably connected in the first slot (12), and a sealing mechanism is provided on the sliding plate (2) and the sampling tube (1), and the sealing mechanism is used to lock the sliding plate (2) to close the sampling holes (11); The sampling tube (1) is also provided with an anti-backflow mechanism, the anti-backflow mechanism comprising a support platform (3) and a closing plate (31) fixedly arranged in the sampling tube (1), a first spring (32) being fixedly arranged in the support platform (3), a locking ball (33) being fixedly connected to the end of the first spring (32), and the locking ball (33) being completely in contact with the closing opening (34) on the sealing plate under the action of the first spring (32).

2. The integrated smoke and flue gas sampling tube according to claim 1, It is characterized in that The sealing mechanism comprises a fixing rod (4) fixedly connected to the sealing plate, a protrusion (41) is fixedly provided on the inner wall of the sampling tube (1), a first sliding groove (42) corresponding to the fixing rod (4) is provided on the protrusion (41), a second sliding groove (43) connected to the first sliding groove (42) is also provided on the sampling tube (1) and the protrusion (41), a locking rod (44) is slidably connected in the second sliding groove (43), one end of the locking rod (44) extends into the locking groove (45) on the fixing rod (4) to lock the sealing plate, and the other end of the locking rod (44) is fixedly connected to an unlocking rod (46), the end of the unlocking rod (46) extends out of the sampling rod, a second spring (47) is fixedly provided between the locking rod (44) and the side wall of the second sliding groove (43), and a plurality of third springs (48) are fixedly connected between the sliding plate (2) and the side wall of the first slot (12).

3. The integrated smoke and flue gas sampling tube according to claim 2, It is characterized in that The sealing mechanism further comprises a rotating shaft (5) rotatably arranged on the sampling tube (1); one end of the rotating shaft (5) located inside the sampling tube (1) is fixedly connected to a transmission rod (51); a transmission plate (53) corresponding to the rotating rod is fixedly arranged on the sealing plate; and one end of the rotating shaft (5) located outside the sampling tube (1) is fixedly connected to a handle (52).

4. The integrated smoke and flue gas sampling tube according to claim 1, It is characterized in that A soft cushion is provided at the closed opening (34).

5. The integrated smoke and flue gas sampling tube according to claim 1, It is characterized in that The plurality of sampling holes (11) are arranged vertically at equal intervals.

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