Smoke dust and flue gas sampling gun protection device

By designing the bottom and top protective shells and fixing mechanisms of the protective device, the damage problem of smoke and smoke sampling gun components during transportation and storage is solved, and the stability and cost-effectiveness of the sampling gun are achieved.

CN223192638UActive Publication Date: 2025-08-05SHANGHAI LIYUAN ENVIRONMENTAL TESTING TECH CO LTD
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Patent Information

Application Number
CN202422353458.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-26
Publication Date
2025-08-05
Estimated Expiration
2034-09-26

AI Technical Summary

Technical Problem

The existing smoke and smoke sampling guns lack special protection devices, which leads to easy damage to the pitot tubes, sampling tubes and thermocouple thermometers during transportation or storage, affecting sampling accuracy and increasing maintenance costs.

Method used

A protective device including a bottom protective case and a top protective case is designed, and the components of the sampling gun are suspended through a fixing mechanism and a gear meshing mechanism, and combined with an adjustable length protective case structure to protect the components of the sampling gun.

Benefits of technology

Effectively prevent damage to the sampling gun components, improve sampling stability, reduce maintenance frequency, and reduce equipment maintenance costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The embodiment of the utility model provides a protection device for a smoke dust and flue gas sampling gun, and relates to the technical field of smoke dust and flue gas sampling guns. The smoke dust and smoke sampling gun protection device comprises a bottom protection shell and a top protection shell, the bottom protection shell slides in an empty groove formed in the lower end of the top protection shell, three inlets are formed in the upper end of the top protection shell, and after the end of a sampling gun enters from the inlets, the sampling gun is fixed through a fixing mechanism installed on the upper sides of the sampling pipe inlets. According to the utility model, a pitot tube, a sampling tube and a thermocouple thermometer of the sampling gun are respectively inserted into the three different inlets, so that the pitot tube, the sampling tube and the thermocouple thermometer are in contact with the limiting plate in the bottom protection shell, and after the bidirectional screw rod is rotated, the sampling tube is fixed by the two fixing sleeves, so that the whole sampling gun is stably placed in the protection device; a hollow rod drives an adjusting screw rod to rotate by combining meshing of a gear I and a gear II, and at the moment, a limiting plate moves downwards to be away from a sampling gun, so that a pitot tube, a sampling tube and a thermocouple thermometer are suspended.
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Description

Technical Field

[0001] The utility model relates to the technical field of smoke and flue gas sampling guns, in particular to a protection device for smoke and flue gas sampling guns. Background Art

[0002] Smoke and flue gas detection is one of the detection items of environmental monitoring and is of great significance to environmental protection. Smoke and flue gas samples in emissions from fixed pollution sources are generally collected with a sampling gun. Depending on the sampling working environment, the sampling gun needs to be designed with different lengths. For example, to collect smoke and flue gas samples from the chimney of an environmental monitoring project, a longer sampling gun is required.

[0003] However, in actual application, it is found that the existing smoke and flue gas sampling guns have some obvious shortcomings, especially during transportation and storage:

[0004] The precision components of existing smoke and flue gas sampling guns, such as the Pitot tube, sampling tube, and thermocouple thermometer, are not equipped with special protective devices. Due to the lack of effective protection measures, these components are easily hit during transportation or storage, resulting in varying degrees of damage. Once these key components are damaged, it will not only affect the accuracy and reliability of sampling, but also increase the maintenance cost and replacement frequency of the equipment. In addition, damage to the sampling gun may also cause work delays, affecting the progress of environmental monitoring and pollution control projects. Utility Model Content

[0005] The purpose of the utility model is to provide a protective device for a smoke and flue gas sampling gun, which can avoid the situation where precision components such as the pitot tube, sampling tube and thermocouple thermometer in the existing smoke and flue gas sampling gun are not equipped with special protective devices. Due to the lack of effective protection measures, these components are easily hit during transportation or storage, resulting in varying degrees of damage.

[0006] The utility model provides a protective device for a smoke and flue gas sampling gun, comprising a bottom protective shell and a top protective shell. The bottom protective shell slides in an empty slot opened at the lower end of the top protective shell, and three inlets are opened at the upper end of the top protective shell. After the end of the sampling gun enters through the inlet, it is fixed by a fixing mechanism installed on the upper side of the sampling tube inlet, so that the pitot tube, the sampling tube and the thermocouple thermometer are in a suspended state after being located in the top protective shell.

[0007] Preferably, the interiors of the entrances opened in the top protective shell are all connected to inner sleeves, and the lower ends of the three inner sleeves are all provided with telescopic sleeves.

[0008] Preferably, the three telescopic sleeves are connected by a long rod, and the two ends of the long rod are respectively connected to the inner walls on both sides of the bottom protective shell.

[0009] Preferably, long grooves are provided on both inner walls of the top protective shell, and the long rods are slidably fitted in the long grooves.

[0010] Preferably, the fixing mechanism includes a pair of arc-shaped fixing sleeves, and the two fixing sleeves slide respectively in two movable grooves opened in the top protective shell.

[0011] Preferably, a through slot is provided on one side of the top protective shell, a bidirectional screw rod is rotatably connected in the through slot, both ends of the bidirectional screw rod are threadedly connected to moving rods, and the two moving rods are respectively connected to the two fixed sleeves.

[0012] Preferably, a hollow rod is rotatably provided inside one side of the top protective shell, and an adjusting screw is slidably connected inside the hollow rod. The lower end of the adjusting screw extends into the sliding groove opened in the bottom protective shell. At the same time, a side groove is opened on the outside of the hollow rod, and a slider set at the upper end of the adjusting screw is slidably connected to the side groove.

[0013] Preferably, the upper end of the hollow rod is connected to gear 2, the middle position of the bidirectional screw rod is connected to gear 1, and gear 1 is meshed with gear 2.

[0014] Preferably, a connecting rod is slidably connected in the sliding groove, three limit plates are provided on the connecting rod, and the connecting rod is threadedly connected to the adjusting screw rod.

[0015] Preferably, a limiting column is provided on one side of the bottom protective shell and the top protective shell, and the bottom protective shell and the top protective shell are fixed by the limiting rod. A limiting hole 2 is provided on the upper side of the limiting rod, and multiple groups of limiting holes 1 are provided on the lower side of the limiting rod. The limiting hole 1 and the limiting hole 2 are plugged into and matched with the limiting column.

[0016] The present invention provides a smoke and gas sampling gun protection device, which is different from the prior art in that:

[0017] 1. The utility model inserts the pitot tube, sampling tube and thermocouple thermometer of the sampling gun into three different entry ports respectively, so that they contact the limit plate in the bottom protective shell. At this time, it is prompted that there is no need to insert it further downward. After rotating the bidirectional screw rod, the two fixing sleeves fix the sampling tube, so that the entire sampling gun is stably placed in the protective device. At the same time, combined with the engagement of gear one and gear two, the hollow rod rotates with the adjusting screw rod. At this time, the limit plate moves downward away from the sampling gun, so that the pitot tube, sampling tube and thermocouple thermometer are suspended in the air, thereby protecting the sampling gun components and preventing them from damage.

[0018] 2. The utility model allows the bottom protective shell to slide upward, so that the adjusting screw rod slides in the hollow rod, and the telescopic sleeve slides on the inner sleeve, thereby adjusting the length of the entire protective device to make it suitable for sampling guns of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0021] Figure 2 This is a schematic diagram of the disassembled structure of the limit rod and the bottom protective shell of an embodiment of the utility model;

[0022] Figure 3 This is a schematic cross-sectional view of the overall structure of an embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the top protective shell structure of an embodiment of the utility model;

[0024] Figure 5 This is a schematic diagram of the inner sleeve structure of an embodiment of the utility model;

[0025] Figure 6 This is a schematic diagram of the fixing mechanism structure of an embodiment of the utility model;

[0026] Figure 7 For the embodiment of the utility model Figure 6 Schematic diagram of the structure at A;

[0027] Figure 8 For the embodiment of the utility model Figure 6 Schematic diagram of the structure at point B.

[0028] Reference numerals:

[0029] 1. Bottom protective shell; 2. Top protective shell; 3. Limiting column; 4. Limiting rod; 5. Limiting hole 1; 6. Limiting hole 2; 7. Slide groove; 8. Limiting plate; 9. Connecting rod; 10. Inner sleeve; 11. Long rod; 12. Empty slot; 13. Long slot; 14. Through slot; 15. Moving slot; 16. Telescopic sleeve; 17. Fixed sleeve; 18. Moving rod; 19. Bidirectional screw; 20. Hollow rod; 21. Adjusting screw; 22. Gear 1; 23. Gear 2; 24. Side slot; 25. Slider. DETAILED DESCRIPTION

[0030] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0031] Please refer to Figures 1-8An embodiment of the utility model provides a protective device for a smoke and flue gas sampling gun, comprising a bottom protective shell 1 and a top protective shell 2. The bottom protective shell 1 slides in a hollow groove 12 opened at the lower end of the top protective shell 2. Three entrances are opened at the upper end of the top protective shell 2. The pitot tube, sampling tube and thermocouple thermometer of the sampling gun can enter from the corresponding entrances respectively and be protected by the bottom protective shell 1 and the top protective shell 2.

[0032] In order to enhance the stability of sampling, when the end of the sampling gun enters from the inlet, a fixing mechanism is installed on the upper side of the sampling tube inlet to fix it, so that the Pitot tube, sampling tube and thermocouple thermometer are in a suspended state after being located in the top protective shell 2.

[0033] Specifically, the fixing mechanism includes a pair of arc-shaped fixing sleeves 17. The two fixing sleeves 17 slide in the two movable grooves 15 opened in the top protective shell 2 respectively. When the two fixing sleeves 17 are close to each other, the sampling tube of the sampling gun can be fixed to ensure that the sampling gun is stably placed.

[0034] In order to improve the fixing effect, a through groove 14 is opened on one side of the top protective shell 2, and a bidirectional screw rod 19 is rotatably connected in the through groove 14. Both ends of the bidirectional screw rod 19 are threadedly connected with a moving rod 18. The two moving rods 18 are respectively connected to the two fixed sleeves 17. Through the rotation of the bidirectional screw rod 19, the two moving rods 18 move with the fixed sleeves 17, thereby improving the fixing effect of the sampling gun.

[0035] At the same time, in order to remind the inspector that the sampling gun enters the appropriate position of the bottom protective shell 1, a connecting rod 9 is slidably connected in the slide groove 7 opened in the bottom protective shell 1, and three limit plates 8 are provided on the connecting rod 9. The positions of the three limit plates 8 correspond to the positions of the three entrances respectively. Before the sampling gun enters, the limit plate 8 is located at the upper end of the bottom protective shell 1. When the sampling gun enters and contacts the limit plate 8, the inspector is reminded that the sampling gun has been placed. At this time, when the sampling gun is fixed, the limit plate 8 can move downward away from the sampling gun, so that the parts of the sampling gun are suspended in the air.

[0036] Furthermore, a hollow rod 20 is rotatably provided inside one side of the top protective shell 2, and an adjusting screw 21 is slidably connected inside the hollow rod 20. The adjusting screw 21 can be telescopically slid in the hollow rod 20. At the same time, the lower end of the adjusting screw 21 extends into the slide groove 7 opened in the bottom protective shell 1 and is rotatably connected to the bottom of the slide groove 7, and a side groove 24 is opened on the outside of the hollow rod 20. The slider 25 set at the upper end of the adjusting screw 21 is slidably connected to the side groove 24. Therefore, when the hollow rod 20 rotates, the adjusting screw 21 can be driven to rotate accordingly.

[0037] Since the upper end of the hollow rod 20 is connected to the gear 2 23, the middle position of the bidirectional screw rod 19 is connected to the gear 1 22. Through the engagement of the gear 1 22 and the gear 2 23, when the bidirectional screw rod 19 rotates to make the fixed sleeves 17 approach each other, the hollow rod 20 rotates with the adjusting screw rod 21, causing the connecting rod 9 threadedly connected to the adjusting screw rod 21 to slide downward with the limit plate 8.

[0038] Secondly, the inside of the entrance opening opened in the top protective shell 2 is connected to the inner sleeve 10, and the lower ends of the three inner sleeves 10 are respectively provided with a telescopic sleeve 16. The inner sleeve 10 and the telescopic sleeve 16 protect the components of the sampling gun separately.

[0039] Taking into account the different sizes of sampling guns, the bottom protective shell 1 can be slid into the top protective shell 2 to reduce the volume of the entire device, which is convenient for protecting sampling guns of different sizes. In order to achieve this purpose, the three telescopic sleeves 16 are connected by a long rod 11, and the two ends of the long rod 11 are respectively connected to the inner walls on both sides of the bottom protective shell 1. Therefore, when the bottom protective shell 1 is slid upward, the long rod 11 is prompted to slide upward with the telescopic sleeve 16, and at the same time, the screw rod 21 is adjusted to slide into the hollow rod 20 to complete the reduction of the entire device.

[0040] In addition, long grooves 13 are provided on the inner walls on both sides of the top protective shell 2, and the long rod 11 is slidably matched with the long grooves 13 to meet the step of the long rod 11 moving upward.

[0041] It is worth noting that a limiting column 3 is provided on one side of the bottom protective shell 1 and the top protective shell 2, and a limiting hole 2 6 is provided on the upper side of the limiting rod 4 for plugging into the limiting column 3, and a limiting hole 1 5 is provided on the lower side of the limiting rod 4 for plugging into the limiting column 3. After adjusting the length of the entire device, the limiting hole 2 6 can be plugged into the limiting column 3 on the upper side, and the limiting column 3 on the lower side can be plugged into the corresponding limiting hole 1 5, which can prevent the top protective shell 2 from sliding downward and ensure the stability of the device.

[0042] In summary, the working principle of a smoke and flue gas sampling gun protection device of an embodiment of the present invention is: according to the length of the sampling gun, the volume of the entire device is adjusted, and the pitot tube, sampling tube, and thermocouple thermometer of the sampling gun are respectively inserted into three different entry ports so that they contact the limit plate 8 in the bottom protective shell 1. At this time, after rotating the bidirectional screw 19, the two fixing sleeves 17 fix the sampling tube, and at the same time, combined with the engagement of gear 1 22 and gear 2 23, the hollow rod 20 rotates with the adjusting screw 21. At this time, the limit plate 8 moves downward away from the sampling gun, so that the pitot tube, sampling tube, and thermocouple thermometer are suspended in the air, thereby protecting the sampling gun components and preventing them from being damaged.

[0043] The above is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A smoke and gas sampling gun protective device, comprising a bottom protective shell (1) and a top protective shell (2), characterized in that: The bottom protective shell (1) slides in a hollow groove (12) provided at the lower end of the top protective shell (2). Three entry ports are provided at the upper end of the top protective shell (2). After the end of the sampling gun enters through the entry port, it is fixed by a fixing mechanism installed on the upper side of the sampling tube entry port, so that the pitot tube, the sampling tube and the thermocouple thermometer are in a suspended state after being located in the top protective shell (2).

2. The smoke and flue gas sampling gun protection device according to claim 1, characterized in that: The interior of the entrance opening of the top protective shell (2) is connected to an inner sleeve (10), and the lower ends of the three inner sleeves (10) are each sleeved with a telescopic sleeve (16).

3. The smoke and flue gas sampling gun protection device according to claim 2, characterized in that: The three telescopic sleeves (16) are connected via a long rod (11), and both ends of the long rod (11) are respectively connected to the inner walls on both sides of the bottom protective shell (1).

4. The protective device for smoke and flue gas sampling gun according to claim 3, characterized in that: Long grooves (13) are provided on both inner walls of the top protective shell (2), and the long rods (11) are slidably fitted in the long grooves (13).

5. The protection device for smoke and flue gas sampling gun according to claim 4, characterized in that: The fixing mechanism comprises a pair of arc-shaped fixing sleeves (17), and the two fixing sleeves (17) slide respectively in two movable grooves (15) opened in the top protective shell (2).

6. The protection device for the smoke and flue gas sampling gun according to claim 5, characterized in that: A through slot (14) is provided on one side of the top protective shell (2), a bidirectional screw rod (19) is rotatably connected in the through slot (14), both ends of the bidirectional screw rod (19) are threadedly connected to moving rods (18), and the two moving rods (18) are respectively connected to the two fixed sleeves (17).

7. The smoke and flue gas sampling gun protection device according to claim 6, characterized in that: A hollow rod (20) is rotatably provided inside one side of the top protective shell (2), an adjusting screw rod (21) is slidably connected inside the hollow rod (20), the lower end of the adjusting screw rod (21) extends into a sliding groove (7) provided in the bottom protective shell (1), and a side groove (24) is provided on the outside of the hollow rod (20), and a slider (25) provided on the upper end of the adjusting screw rod (21) is slidably connected to the side groove (24).

8. The protection device for the smoke and flue gas sampling gun according to claim 7, characterized in that: The upper end of the hollow rod (20) is connected to a second gear (23), and the middle position of the bidirectional screw rod (19) is connected to a first gear (22), and the first gear (22) is meshed with the second gear (23).

9. The protection device for smoke and flue gas sampling gun according to claim 8, characterized in that: A connecting rod (9) is slidably connected in the sliding groove (7), three limiting plates (8) are provided on the connecting rod (9), and the connecting rod (9) is threadedly connected to the adjusting screw rod (21).

10. The smoke and flue gas sampling gun protection device according to claim 9, characterized in that: A limiting column (3) is provided on one side of the bottom protective shell (1) and the top protective shell (2), and the bottom protective shell (1) and the top protective shell (2) are fixed by a limiting rod (4). A limiting hole 2 (6) is provided on the upper side of the limiting rod (4), and a plurality of groups of limiting holes 1 (5) are provided on the lower side of the limiting rod (4). The limiting holes 1 (5) and the limiting holes 2 (6) are plugged into and matched with the limiting column (3).