Flue gas sampling gun

Abstract

The utility model discloses a smoke sampling gun which comprises a main machine, a rod is arranged on the main machine, the upper end portion of the rod is rotatably connected with an upper chain wheel, the lower end portion of the rod is rotatably connected with a lower chain wheel, the upper chain wheel and the lower chain wheel are connected through a chain, a conveying disc is arranged on the chain, and a magnet disc is arranged on the conveying disc. A sampling cup shell is further included, a tail magnet is arranged at the bottom of the sampling cup shell, and the tail magnet and the magnet disc are mutually attracted and connected; and the motor assembly is in driving connection with the lower chain wheel. The flue gas sampling gun disclosed by the utility model is favorable for improving the working efficiency and the sampling accuracy.

Description

Technical Field

[0001] The utility model relates to the field of smoke sampling devices, in particular to a smoke sampling gun. Background Art

[0002] At present, some enterprises will produce flue gas during the production process. Flue gas with excessive pollutants will have a great impact on the environment. Therefore, it is necessary to sample the discharged flue gas and then analyze the sampled material offline. At present, most of the sampling is done with a flue gas sampling gun. The sampling gun includes a main unit, one end of which is connected to a rod, and the end of the rod is provided with a sampling cup, a sensor and other sampling devices, and a sampling core is placed in the sampling cup. When in use, the end of the rod is extended upward to the exhaust pipe so that the mouth of the sampling cup faces the flue gas flow, so the sampling core is stained with smoke, organic emissions, etc. After collecting for a certain period of time, the rod is moved away from the exhaust pipe, and the sampling core in the sampling cup is taken out. After a new sampling core is placed in the sampling cup, the end of the rod is extended to the exhaust pipe. However, the above operation will cause the sensor at the end of the rod to leave the sampling position, resulting in recalibration every time the sampling core is changed, which affects the work efficiency and the accuracy of the sampling data. Therefore, it is necessary to improve the existing flue gas sampling gun. Summary of the invention

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a smoke sampling gun which is beneficial to improving work efficiency.

[0004] The purpose of the utility model is achieved through the following technical solutions.

[0005] The smoke sampling gun disclosed in the utility model comprises a main machine, wherein the main machine is provided with a rod, wherein the upper end of the rod is rotatably connected to an upper sprocket, and the lower end of the rod is rotatably connected to a lower sprocket, the upper sprocket and the lower sprocket are connected by a chain, a conveying disk is provided on the chain, and a magnet disk is provided on the conveying disk; it also comprises a sampling cup shell, a tail magnet is provided at the bottom of the sampling cup shell, and the tail magnet and the magnet disk are mutually attracted and connected; it also comprises a motor assembly, and the motor assembly is driven and connected to the lower sprocket.

[0006] Preferably, a positioning groove is formed on one side of the upper end of the rod, and the sampling cup shell can be adapted to be closely connected with the positioning groove.

[0007] Preferably, a travel switch is provided at the bottom of the positioning groove, and the travel switch is electrically connected to the motor assembly.

[0008] Preferably, the motor assembly is mounted on the pole.

[0009] Preferably, the chain is provided with a chain plate and a pin, one side of the conveying disc is pressed against the outer side of the corresponding chain plate, the pin passes through the conveying disc accordingly, and the magnet disc is embedded in the other side of the conveying disc correspondingly.

[0010] Compared with the prior art, the utility model has the following beneficial effects: the upper end of the rod is rotatably connected to the upper sprocket, the lower end of the rod is rotatably connected to the lower sprocket, the upper sprocket and the lower sprocket are connected by a chain, a conveying disk is provided on the chain, a magnet disk is provided on the conveying disk, a tail magnet is provided on the bottom of the sampling cup shell, the tail magnet and the magnet disk are mutually attracted and connected, and the motor assembly is driven to connect to the lower sprocket, which is beneficial to improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a front view structural schematic diagram of the smoke sampling gun of the utility model.

[0012] Figure 2 It is a right side structural schematic diagram of the smoke sampling gun of the utility model in working state.

[0013] Figure 3 It is a right view structural schematic diagram of the smoke sampling gun of the present invention when the sampling cup shell leaves the working position.

[0014] Figure 4 It is a structural schematic diagram of the sampling cup shell, conveying plate and chain combination of the utility model.

[0015] Figure 5 It is a structural schematic diagram of the combination of the conveying plate, chain plate and pin shaft of the utility model.

[0016] Figure 6 It is a cross-sectional structural schematic diagram of the rod and travel switch combination of the utility model.

[0017] Explanation of reference numerals: main unit 1; handle 11; rod 2; positioning groove 201; travel switch 21; sampling cup shell 3; sampling core 30; cup cover with holes 31; tail magnet 32; upper sprocket 4; lower sprocket 5; motor assembly 6; chain 7; chain plate 71; pin shaft 72; conveying disc 8; magnet disc 81; wind pressure measurement sampling tube 91; humidity sensor 92. DETAILED DESCRIPTION

[0018] The utility model is further described below in conjunction with the accompanying drawings.

[0019] The smoke sampling gun of the utility model is as follows Figures 1 to 4As shown, the main unit 1 includes a circuit board and a battery, a data line interface is also provided at the lower end of the main unit 1, a rod 2 is provided on the main unit 1, the lower end of the rod 2 is fixedly connected to the upper end of the housing of the main unit 1, and the housing of the main unit 1 is also fixedly connected to a handle 11, the upper end of the rod 2 is rotatably connected to an upper sprocket 4, the lower end of the rod 2 is rotatably connected to a lower sprocket 5, the upper sprocket 4 and the lower sprocket 5 are connected by a chain 7, that is, a chain 7 is sleeved on the upper sprocket 4 and the lower sprocket 5, specifically, as shown in FIG. Figure 1 As shown, a support shaft is welded on the right side of the rod 2, and the upper sprocket 4 is sleeved on the above-mentioned support shaft, and a bearing is provided between the upper sprocket 4 and the above-mentioned support shaft. Figure 1 and Figure 2 As shown, a conveying plate 8 is provided on the chain 7. In other words, the chain 7 can drive the conveying plate 8 to move when it is running. Figure 4 As shown, a magnet disk 81 is provided on the conveying disk 8; Figures 1 to 3 As shown, the smoke sampling gun of the utility model further includes a sampling cup shell 3, that is, the sampling cup shell 3 is used to accommodate the sampling core 30, such as Figure 4 As shown, a tail magnet 32 ​​is provided at the bottom of the sampling cup shell 3, and the tail magnet 32 ​​is mutually attracted and connected with the magnet disk 81. The sampling cup shell 3 can be made of stainless steel, and the tail magnet 32 ​​can be embedded in the outer bottom of the sampling cup shell 3; Figure 1 As shown, the smoke sampling gun of the utility model also includes a motor assembly 6 (it should be noted that Figure 2 The motor assembly 6 is not shown), the motor assembly 6 drives the lower sprocket 5. Specifically, the lower sprocket 5 can be coaxially installed on the output shaft of the motor assembly 6, so that when the motor assembly 6 is running, the lower sprocket 5 is driven to rotate, and the lower sprocket 5 drives the upper sprocket 4 to rotate synchronously through the chain 7. Figure 1 As shown, the upper end of the rod 2 is also provided with a wind pressure measurement sampling tube 91, for example, refer to the Chinese utility model patent publication number CN207197853U "a high dust, high humidity flue gas sampling gun", the upper end of the rod 2 is also provided with a humidity sensor 92, for example, refer to the Chinese utility model patent publication number CN212586066U "overpressure protection smoke and flue gas sampling detection equipment". Figure 4 As shown, the sampling cup shell 3 includes a cup cover 31 with a hole, and the cup cover 31 with a hole is screwed to the edge of the opening of the sampling cup shell 3 . The sampling core 30 can be placed in the sampling cup shell 3 .

[0020] like Figure 1 As shown, the sampling cup shell 3 is in the working position, that is, the sampling cup shell 3 is located at the corresponding position of the upper end of the rod 2. The user holds the host 1 and extends the rod 2 upward into the exhaust pipe (the exhaust pipe can be provided with a detection door). When the sampling core 30 in the sampling cup shell 3 completes sampling, as shown in FIG. Figure 2 and Figure 3As shown, the motor assembly 6 is operated to drive the chain 7 to operate (making the upper sprocket 4 rotate counterclockwise), as shown in FIG. Figure 3 As shown, the chain 7 then transports the conveying plate 8 and the sampling cup shell 3 to the vicinity of the lower sprocket 5, while the upper end of the rod 2 remains in the smoke exhaust pipe to prevent the wind pressure measurement sampling tube 91 and the humidity sensor 92 from leaving the working position. Then the sampling cup shell 3 is taken off the conveying plate 8, that is, the tail magnet 32 ​​is separated from the magnet plate 81, and then the next sampling cup shell 3 (with a new sampling core 30) is magnetically adsorbed onto the magnet plate 81, and then the motor assembly 6 drives the chain 7 in the reverse direction (so that the upper sprocket 4 rotates clockwise), and the chain 7 drives the above-mentioned next sampling cup shell 3 to the working position. (That is, the sampling cup shell 3 stays at the position corresponding to the upper end of the rod 2). Since the sampling cup shell 3 is installed on the conveying disk 8 through a magnetic adsorption structure, the user only needs to use one hand to operate the removal and installation of the sampling cup shell 3, which is conducive to the convenient use of the smoke sampling gun; in the above-mentioned process of replacing the sampling core 30, the sampling cup shell 3 does not need to be removed from the conveying disk 8, but only the cup cover with holes 31 is removed, and only the next sampling core 30 is replaced into the sampling cup shell 3. If the required number of sampling times is large, the above operation can avoid the need to make multiple sampling cup shells 3. As can be seen from the above, the smoke sampling gun of the utility model can avoid the need to move the upper end of the rod 2, the wind pressure measurement sampling tube 91 and the humidity sensor 92 away from the working position when replacing the sampling core 30, thereby avoiding the need for extra time for recalibration, which is conducive to improving work efficiency and improving sampling accuracy.

[0021] Furthermore, if Figure 3 As shown, a positioning groove 201 is formed on one side of the upper end of the rod 2, and the sampling cup shell 3 can be fitted and connected with the positioning groove 201. The rod 2 can be made of a stainless steel square tube, and the positioning groove 201 is equivalent to the arc-shaped notch on one side of the rod 2. When the chain 7 drives the sampling cup shell 3 to move upward, the sampling cup shell 3 is on the outside of the rod 2. When the sampling cup shell 3 moves to the position of the upper sprocket wheel 4, the sampling cup shell 3 will be transformed into a circular movement along the upper sprocket wheel 4, so the sampling cup shell 3 swings toward the rod 2, so that the cylindrical sampling cup shell 3 enters the positioning groove 201. At this time, the motor assembly 6 stops working, so that the sampling cup shell 3 is fitted and connected with the positioning groove 201, so as to avoid the sampling cup shell 3 from shaking significantly during sampling.

[0022] Furthermore, if Figure 6As shown, a travel switch 21 is provided at the bottom of the positioning groove 201. The travel switch 21 can be a micro-travel switch on the market. The travel switch 21 is electrically connected to the motor assembly 6. Specifically, the travel switch 21 can be connected to the motor assembly 6 through a circuit board. When the chain 7 drives the sampling cup shell 3 to enter the positioning groove 201, the outer wall of the sampling cup shell 3 abuts against the positioning groove 201 and triggers the travel switch 21 to stop the motor assembly 6, so that the motor assembly 6 can only drive the upper sprocket wheel 4 to rotate counterclockwise at this time, thereby avoiding misoperation and causing the sampling cup shell 3 to forcibly squeeze the positioning groove 201, avoiding accidental separation of the sampling cup shell 3 and the conveying plate 8, and making the sampling cup shell 3 more accurately parked at the working position. The button for controlling the forward and reverse rotation of the motor assembly 6 can be set on the host 1.

[0023] Furthermore, if Figure 1 As shown, the motor assembly 6 is installed on the rod 2. For example, the housing of the motor assembly 6 can be fixed to the rod 2 by screws, and the output shaft of the motor assembly 6 vertically passes through the rod 2, that is, the housing of the motor assembly 6 and the lower sprocket 5 are arranged on opposite sides. Installing the motor assembly 6 on the rod 2 is conducive to simplifying the structure of the smoke sampling gun.

[0024] Furthermore, if Figure 4 and Figure 5 As shown, the chain 7 is provided with a chain plate 71 and a pin 72, one side of the conveying disc 8 is abutted against the outer side of the corresponding chain plate 71, the conveying disc 8 can be in the shape of a round cake, and the pin 72 passes through the conveying disc 8 accordingly. Specifically, the two pins 72 passing through one chain plate 71 pass through the conveying disc 8 at the same time, and the end of the pin 72 can be riveted to the conveying disc 8, and the magnet disc 81 is embedded in the other side corresponding to the conveying disc 8. The magnet disc 81 can be fixed to the conveying disc 8 by using an interference fit structure, that is, a circular pit is formed on the other side corresponding to the conveying disc 8, and the pin 72 is riveted to the bottom of the circular pit, so as to prevent the conveying disc 8 from separating from the chain plate 71 along the axial direction of the pin 72. Through the above arrangement, when the chain 7 is running, the conveying disc 8 can follow the chain 7 to run synchronously, and the conveying disc 8 can drive the sampling cup shell 3 to and fro Figure 2 The working position shown is similar to Figure 3 Between the replacement stations shown; the installation structure of the conveyor plate 8 and the chain 7 is simple, reliable and low in cost.

Claims

1. A smoke sampling gun, comprising a main unit (1), wherein the main unit (1) is provided with a rod (2), characterized in that: The upper end of the rod (2) is rotatably connected to an upper sprocket (4), and the lower end of the rod (2) is rotatably connected to a lower sprocket (5); the upper sprocket (4) and the lower sprocket (5) are connected via a chain (7); a conveying disk (8) is provided on the chain (7), and a magnet disk (81) is provided on the conveying disk (8); the sampling cup shell (3) is further included, a tail magnet (32) is provided at the bottom of the sampling cup shell (3), and the tail magnet (32) and the magnet disk (81) are mutually attracted and connected; and a motor assembly (6) is further included, and the motor assembly (6) is driven and connected to the lower sprocket (5).

2. The smoke sampling gun according to claim 1, characterized in that: A positioning groove (201) is formed on one side of the upper end portion of the rod (2), and the sampling cup shell (3) can be adapted to be closely connected with the positioning groove (201).

3. The smoke sampling gun according to claim 2, characterized in that: A travel switch (21) is provided at the bottom of the positioning groove (201), and the travel switch (21) is electrically connected to the motor assembly (6).

4. The smoke sampling gun according to claim 1, characterized in that: The motor assembly (6) is mounted on the rod (2).

5. The smoke sampling gun according to claim 1, characterized in that: The chain (7) is provided with a chain plate (71) and a pin shaft (72); one side of the conveying disc (8) is in contact with the outer side of the corresponding chain plate (71); the pin shaft (72) passes through the conveying disc (8) correspondingly; and the magnet disc (81) is embedded in the other side of the conveying disc (8) correspondingly.

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