A device for detecting hydrogen sulfide content inside a biogas tank

Abstract

The present invention relates to a hydrogen sulfide content detection device, and in particular to a hydrogen sulfide content detection device inside a biogas tank. Provided is a hydrogen sulfide content detection device inside a biogas tank that can be easily moved and has accurate detection results. A hydrogen sulfide content detection device inside a biogas tank includes a mounting block, rollers, a bracket, a detector, a pipeline, etc.; rollers are rotatably provided on the front and rear sides of the left and right sides of the lower part of the mounting block, a bracket is provided on the top of the mounting block, a detector is provided on the upper part of the bracket, and pipelines are connected to the left and right sides of the upper part of the detector, and the upper part of the pipeline passes through the top of the bracket. After the straight pipe moves downward, it enters the biogas tank, thereby extracting the gas inside the biogas tank for the detector to detect the hydrogen sulfide content, so that the detection result is more accurate. At the same time, because the device is easy to move, it is convenient for the staff to detect other biogas tanks in turn.

Description

Technical Field

[0001] The invention relates to a hydrogen sulfide content detection device, in particular to a hydrogen sulfide content detection device inside a biogas tank. Background Art

[0002] The raw materials for making biogas are mainly animal manure, sewage, and rotten objects, which are used to form usable gas through special fermentation. During the biogas fermentation process, the hydrogen sulfide content inside the biogas pool needs to be tested to find out whether the hydrogen sulfide content exceeds the standard.

[0003] At present, when detecting the hydrogen sulfide content inside a biogas digester, if a large-scale detection instrument is used, there is a problem of inconvenience in movement and transportation. When detecting through a portable hydrogen sulfide gas detection tube, this detection device cannot be extended into the biogas digester, resulting in inaccurate detection results.

[0004] To this end, we propose a device for detecting the hydrogen sulfide content inside a biogas digester that can be easily moved and has accurate detection results. Summary of the invention

[0005] In order to overcome the disadvantages that large detection instruments are inconvenient to carry and move, and portable hydrogen sulfide gas detection tubes have inaccurate detection results, the technical problem to be solved is to provide a hydrogen sulfide content detection device inside a biogas digester that can be easily moved and has accurate detection results.

[0006] The present invention is implemented through the following technical approaches: a device for detecting the hydrogen sulfide content inside a biogas tank, comprising a mounting block, a roller, a bracket, a detector, a pipe, an insertion component and a pulling component, wherein rollers are rotatably provided on the front and rear sides of the left and right sides of the lower part of the mounting block, a bracket is provided on the top of the mounting block, a detector is provided on the upper part of the bracket, pipes are connected to the left and right sides of the upper part of the detector, the upper part of the pipes passes through the top of the bracket, the pipe on the left side is provided with a one-way valve, an insertion component for inserting into the biogas tank is provided on the bracket, a pulling component is provided between the insertion component and the bracket, and the pulling component is used to drive the insertion component to insert into the biogas tank.

[0007] Furthermore, the extension component includes a guide rod, a sliding sleeve, a horizontal plate, a straight pipe, a right-angle plate and a connecting pipe. Guide rods are provided on the left and right sides of the rear side of the bracket. A sliding sleeve is slidably provided between the left and right guide rods. A horizontal plate is provided on the rear side of the middle part of the sliding sleeve, a straight pipe is provided on the rear side of the horizontal plate, a right-angle plate is provided on the front side of the middle part of the sliding sleeve, and a connecting pipe is placed on the upper part of the right-angle plate. The rear end of the connecting pipe is connected to the straight pipe, and the front end of the connecting pipe is connected to the right end of the pipe on the right side.

[0008] Furthermore, the pulling assembly includes a first elastic member, a dual-axis motor, a rotating rod, a winding wheel, a pulley, a flat belt and a pull wire. The first elastic member is wound between the sliding sleeve and the guide rod, a dual-axis motor is provided at the lower part of the bracket, a rotating rod is rotatably provided between the bottoms of the left and right guide rods, a winding wheel is provided in the middle of the rotating rod, pulleys are provided on the left and right sides of the rotating rod, the same pulleys are provided on the output shafts on both sides of the dual-axis motor, a flat belt is wound between the front and rear pulleys on the same side, a pull wire is wound on the winding wheel, and the tail end of the pull wire is connected to the lower front part of the right angle plate.

[0009] Furthermore, it also includes an absorption component for absorbing gas inside the biogas tank, the absorption component includes a cylinder body, a piston rod, a guide ring and an exhaust pipe, a cylinder body is provided at the lower part of the right-angle plate, a piston rod is slidably provided inside the cylinder body, the upper part of the piston rod is located outside the cylinder body, a guide ring is provided on the rear side of the left pipe, an exhaust pipe is provided at the bottom of the cylinder body, and the tail end of the exhaust pipe passes through the bottom of the straight pipe and the guide ring and is connected to the pipe on the left.

[0010] Furthermore, it also includes a contact assembly for automatically sliding the piston rod up and down, the contact assembly includes a second elastic member, a contact rod, a fixed rod and a contact plate, the second elastic member is wound around the piston rod and the cylinder body, a contact rod is provided on the upper part of the piston rod, two fixed rods are provided on the rear side of the lower part of the bracket, a contact plate is provided between the upper parts of the two fixed rods, and the contact rod moves downward to contact the contact plate.

[0011] Furthermore, it also includes a cleaning component for cleaning residual gas in the pipeline, the cleaning component includes a knob, an air bag and an intake pipe, a detachable knob is provided at the tail end of the left pipeline, an air bag is provided on the knob, and an intake pipe with a one-way valve is provided at the lower front part of the air bag.

[0012] Furthermore, it also includes a pressing component for automatically squeezing the airbag, the pressing component includes a guide frame, a sliding plate, a third elastic member, a fixed plate, a right-angle rod and a pressure plate. A guide frame is provided in the middle position at the top of the bracket, and a sliding plate is slidably provided in the guide frame. The rear side of the sliding plate is in contact with the right-angle plate at this time. A third elastic member is connected between the sliding plate and the guide frame, and the third elastic member is in a compressed state. A fixed plate is provided on the left side of the upper front side of the bracket, and a right-angle rod is slidably provided on the upper part of the fixed plate. The lower part of the right-angle rod is in contact with the front side of the sliding plate at this time. A pressure plate is provided on the upper part of the right-angle rod, and the pressure plate is squeezing the airbag at this time.

[0013] Furthermore, the connecting pipe is a hose.

[0014] The present invention has the following advantages: 1. The straight pipe moves downward and enters the interior of the biogas tank, thereby extracting the gas inside the biogas tank for the detector to detect the hydrogen sulfide content, making the detection result more accurate. At the same time, since the device is easy to move, it is convenient for the staff to detect other biogas tanks in turn.

[0015] 2. The output shaft of the dual-axis motor rotates to rotate the winding wheel, and then the straight pipe moves downward into the biogas tank by pulling the wire.

[0016] 3. The up and down sliding of the piston rod can accelerate the speed at which the gas inside the biogas tank enters the straight pipe, thereby increasing the detection speed.

[0017] 4. After the airbag is squeezed and then expanded, it can introduce outside air into the pipe on the left, thereby expelling the residual gas inside the device, making it easier to carry out the next test and improving the accuracy of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention.

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the insertion component of the present invention.

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the pulling assembly of the present invention.

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of the suction component of the present invention.

[0023] Figure 6 It is a schematic diagram of the three-dimensional structure of the contact assembly of the present invention.

[0024] Figure 7 It is a three-dimensional structural schematic diagram of the cleaning component of the present invention.

[0025] Figure 8 It is a schematic diagram of the three-dimensional structure of the pressing component of the present invention.

[0026] Figure numbers: 1_mounting block, 2_roller, 3_bracket, 4_detector, 5_pipeline, 6_insertion assembly, 61_guide rod, 62_sliding sleeve, 63_cross plate, 64_straight pipe, 65_right angle plate, 66_connecting pipe, 7_pulling assembly, 71_first elastic member, 72_double-axis motor, 73_rotating rod, 74_winding wheel, 75_pulley, 76_flat belt, 77_pulling wire, 8_suction assembly, 81_cylinder Body, 82_piston rod, 83_guide ring, 84_exhaust pipe, 9_contact assembly, 91_second elastic member, 92_contact rod, 93_fixing rod, 94_contact plate, 10_clearing assembly, 101_knob, 102_air bag, 103_intake pipe, 11_pressing assembly, 111_guide frame, 112_sliding plate, 113_third elastic member, 114_fixing plate, 115_right-angle rod, 116_pressing plate. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] Example 1

[0029] A device for detecting the hydrogen sulfide content inside a biogas tank, such as Figure 1-4 As shown, it includes a mounting block 1, a roller 2, a bracket 3, a detector 4, a pipe 5, an insertion component 6 and a pulling component 7. The rollers 2 are rotatably provided on the front and rear sides of the left and right sides of the lower part of the mounting block 1. The top of the mounting block 1 is fixedly connected with the bracket 3 by bolts. The upper part of the bracket 3 is fixedly connected with the detector 4 by bolts. The upper left and right sides of the detector 4 are connected with pipes 5. The upper part of the pipes 5 passes through the top of the bracket 3. The pipe 5 on the left side is provided with a one-way valve. The bracket 3 is provided with an insertion component 6, which can be inserted into the biogas tank. A pulling component 7 is provided between the insertion component 6 and the bracket 3, and the pulling component 7 can drive the insertion component 6 to be inserted into the biogas tank.

[0030] When using the device, the staff moves the device to a suitable position. The roller 2 can facilitate the staff to move the device. After the device is moved to a suitable position, the staff drives the insertion component 6 into the biogas tank by pulling the component 7, so that the gas inside the biogas tank enters the right pipe 5 through the insertion component 6, and then the hydrogen sulfide content is detected by the detector 4, so that the detection result is more accurate. The detection result is displayed on the screen of the detector 4. After the detection is completed, the staff drives the insertion component 6 to move upward and reset by pulling the component 7, and then the staff pushes the device to the next biogas tank for detection.

[0031] like Figure 1 and Figure 3 As shown, the extension component 6 includes a guide rod 61, a sliding sleeve 62, a transverse plate 63, a straight pipe 64, a right-angle plate 65 and a connecting pipe 66. The guide rods 61 are welded to the left and right sides of the rear side of the bracket 3. A sliding sleeve 62 is slidably arranged between the left and right guide rods 61. A transverse plate 63 is welded to the rear side of the middle part of the sliding sleeve 62. A straight pipe 64 is arranged on the rear side of the transverse plate 63. A right-angle plate 65 is welded to the front side of the middle part of the sliding sleeve 62. A connecting pipe 66 is placed on the upper part of the right-angle plate 65. The rear end of the connecting pipe 66 is connected to the straight pipe 64, and the front end of the connecting pipe 66 is connected to the right end of the pipeline 5 on the right side. The connecting pipe 66 is a hose.

[0032] like Figure 1 and Figure 4As shown, the pulling assembly 7 includes a first elastic member 71, a dual-axis motor 72, a rotating rod 73, a winding wheel 74, a pulley 75, a flat belt 76 and a pull wire 77. The first elastic member 71 is wound between the sliding sleeve 62 and the guide rod 61. The first elastic member 71 is a compression spring. The dual-axis motor 72 is fixed to the lower part of the bracket 3 by bolts. A rotating rod 73 is rotatably provided between the bottoms of the left and right guide rods 61. The middle part of the rotating rod 73 is keyed with a winding wheel 74. The left and right sides of the rotating rod 73 are keyed with pulleys 75. The output shafts on both sides of the dual-axis motor 72 are keyed with the same pulleys 75. A flat belt 76 is wound between the front and rear pulleys 75 on the same side. A pull wire 77 is wound on the winding wheel 74. The tail end of the pull wire 77 is connected to the lower front side of the right-angle plate 65.

[0033] When using the device, the staff moves the device to a suitable position so that the straight pipe 64 is located at the top entrance of the biogas tank. At this time, the staff starts the double-axis motor 72. The output shaft of the double-axis motor 72 rotates through the pulley 75 and the flat belt 76 to drive the rotating rod 73 to rotate. The rotating rod 73 rotates to drive the winding wheel 74 to rotate to reel in the line. The pull line 77 then pulls the right-angle plate 65 downward. The right-angle plate 65 moves downward and drives the sliding sleeve 62 to slide downward. The first elastic member 71 is deformed, and the sliding sleeve 62 slides downward to drive the horizontal plate 63 to move downward. The horizontal plate 63 moves downward and drives the straight pipe 64 to move downward and extend into the biogas tank. At the same time, since the connecting pipe 66 is a hose, It will not affect the movement of the straight pipe 64. After the straight pipe 64 enters the biogas tank, the gas inside the biogas tank naturally flows into the straight pipe 64, and then enters the right pipe 5 through the connecting pipe 66 for detection by the detector 4. After the detection is completed, the staff controls the output shaft of the dual-axis motor 72 to reverse, so that the rotating rod 73 drives the winding wheel 74 to reverse for line release. At this time, under the action of the first elastic member 71 being reset, the sliding sleeve 62 slides upward and resets, and the sliding sleeve 62 slides upward to drive the right-angle plate 65 to move upward and reset. While the sliding sleeve 62 slides upward, it drives the straight pipe 64 to move upward and reset through the cross plate 63. After the straight pipe 64 is reset, the staff turns off the dual-axis motor 72.

[0034] Example 2

[0035] On the basis of Example 1, Figure 1 and Figure 5 As shown, it also includes a suction component 8, which can absorb the internal gas of the biogas tank. The suction component 8 includes a cylinder body 81, a piston rod 82, a guide ring 83 and an exhaust pipe 84. The cylinder body 81 is welded to the lower part of the right-angle plate 65, and the piston rod 82 is slidably provided inside the cylinder body 81. The upper part of the piston rod 82 is located outside the cylinder body 81. A guide ring 83 is provided on the rear side of the left pipe 5, and an exhaust pipe 84 is provided at the bottom of the cylinder body 81. The tail end of the exhaust pipe 84 passes through the bottom of the straight pipe 64 and the guide ring 83 and is connected to the left pipe 5.

[0036] When using the device, after the insertion component 6 is inserted into the interior of the biogas tank, the staff uses a tool to block the tail end of the left pipe 5, and then pulls the piston rod 82 to slide upward. When the piston rod 82 slides upward, air is inhaled, and the gas in the pipe 5 enters the cylinder body 81 through the exhaust pipe 84, thereby accelerating the speed at which the gas inside the biogas tank enters the insertion component 6. When the inspection is completed, the staff pushes the piston rod 82 to slide downward, and the piston rod 82 slides downward to push the gas in the cylinder body 81 into the left pipe 5 through the exhaust pipe 84, and then the gas inside the device is discharged through the insertion component 6.

[0037] like Figure 1 and Figure 6 As shown, it also includes a contact component 9, which can automatically make the piston rod 82 slide up and down. The contact component 9 includes a second elastic member 91, a contact rod 92, a fixed rod 93 and a contact plate 94. The second elastic member 91 is wound around the piston rod 82 and the cylinder body 81. The second elastic member 91 is a tension spring. The contact rod 92 is provided on the upper part of the piston rod 82. Two fixed rods 93 are welded on the rear side of the lower part of the bracket 3. A contact plate 94 is welded between the upper parts of the two fixed rods 93. The contact rod 92 moves downward and contacts with the contact plate 94.

[0038] When the device is used, the right-angle plate 65 moves downward, driving the cylinder body 81 to move downward. The cylinder body 81 moves downward and drives the contact rod 92 to move downward through the piston rod 82. When the contact rod 92 moves downward until it contacts the contact plate 94, the piston rod 82 remains stationary, and the cylinder body 81 continues to move downward to pump air. The second elastic member 91 is deformed. When the right-angle plate 65 moves upward, the cylinder body 81 moves upward accordingly to reset the second elastic member 91. After the second elastic member 91 is reset, the cylinder body 81 continues to move upward and drives the contact rod 92 to move upward and reset through the piston rod 82. In this way, air can be automatically pumped out after the straight pipe 64 enters the interior of the biogas tank.

[0039] like Figure 1 and Figure 7 As shown, it also includes a cleaning component 10, which can clean the residual gas in the pipeline 5. The cleaning component 10 includes a knob 101, an air bag 102 and an intake pipe 103. The tail end of the left pipeline 5 is provided with a detachable knob 101, the air bag 102 is provided on the knob 101, and the intake pipe 103 with a one-way valve is provided on the lower front part of the air bag 102.

[0040] like Figure 1 and Figure 8As shown, it also includes a pressing assembly 11, which can automatically squeeze the airbag 102. The pressing assembly 11 includes a guide frame 111, a sliding plate 112, a third elastic member 113, a fixing plate 114, a right-angle rod 115 and a pressing plate 116. The guide frame 111 is welded to the middle position of the top of the bracket 3. The sliding plate 112 is slidably arranged in the guide frame 111. The lower parts of the front and rear sides of the sliding plate 112 are inclined. At this time, the rear side of the sliding plate 112 is aligned with the right-angle plate 65. A third elastic member 113 is connected between the sliding plate 112 and the guide frame 111, and the third elastic member 113 is a compression spring. The third elastic member 113 is in a compressed state. A fixing plate 114 is fixedly connected to the left side of the upper front side of the bracket 3 by bolts, and a right-angle rod 115 is slidably provided on the upper part of the fixing plate 114. The lower part of the right-angle rod 115 is in contact with the front side of the sliding plate 112 at this time, and a pressure plate 116 is welded on the upper part of the right-angle rod 115, and the pressure plate 116 is squeezing the airbag 102 at this time.

[0041] When using the device, after the right-angle plate 65 moves downward to be separated from the sliding plate 112, under the action of the third elastic member 113 being reset, the sliding plate 112 slides backward and no longer squeezes the right-angle rod 115. At this time, the airbag 102 expands and resets. The expansion of the airbag 102 drives the pressure plate 116 to move forward, and the pressure plate 116 moves upward to drive the right-angle rod 115 to move upward. While the airbag 102 expands, since the left side pipe 5 is provided with a one-way valve, the expansion of the airbag 102 inhales the outside air through the air intake pipe 103. When the right-angle plate 65 moves upward to contact the sliding plate 112, the right-angle plate 65 continues to move upward to squeeze the sliding plate 112 to slide forward, and the third The elastic part 113 is deformed, and the sliding plate 112 slides forward to squeeze the right-angle rod 115 to slide downward. The right-angle rod 115 slides downward to drive the pressure plate 116 to move downward to squeeze the airbag 102. Since the air inlet pipe 103 is provided with a one-way valve, the air in the airbag 102 passes through the guide frame 111 into the pipe 5 on the left, and then enters the pipe 5 on the right, and is finally discharged through the extension component 6. When the airbag 102 is damaged, the staff can remove the knob 101 and then replace the entire cleaning component 10. In this way, after the detection is completed, the residual gas inside the device can be automatically discharged, which is convenient for the next detection, thereby improving the detection accuracy.

[0042] The above embodiments are provided to persons familiar with the art to implement or use the present invention. Persons familiar with the art may make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention. Therefore, the protection scope of the present invention is not limited to the above embodiments, but should be the maximum scope of the innovative features mentioned in the claims.

Claims

1. A device for detecting the content of hydrogen sulfide in a biogas tank, comprising a mounting block (1), a roller (2), a bracket (3), a detector (4) and a pipe (5), wherein the mounting block (1) is provided with rollers (2) on both the front and rear sides of the left and right sides of the lower part, the mounting block (1) is provided with a bracket (3) on the top, the detector (4) is provided on the upper part of the bracket (3), the upper part of the detector (4) is connected to the left and right sides of the upper part, the upper part of the pipe (5) passes through the top of the bracket (3), and the left pipe (5) is provided with a one-way valve, characterized in that: It also includes an insertion component (6) and a pulling component (7), wherein the bracket (3) is provided with an insertion component (6) for inserting into the biogas tank, and a pulling component (7) is provided between the insertion component (6) and the bracket (3), and the pulling component (7) is used to drive the insertion component (6) to insert into the biogas tank; The extension assembly (6) comprises a guide rod (61), a sliding sleeve (62), a transverse plate (63), a straight pipe (64), a right-angle plate (65) and a connecting pipe (66). The left and right sides of the rear side of the bracket (3) are provided with guide rods (61). A sliding sleeve (62) is slidably provided between the left and right guide rods (61). A transverse plate (63) is provided at the rear side of the middle of the sliding sleeve (62). A straight pipe (64) is provided at the rear side of the transverse plate (63). A right-angle plate (65) is provided at the front side of the middle of the sliding sleeve (62). A connecting pipe (66) is placed on the upper part of the right-angle plate (65). The rear end of the connecting pipe (66) is connected to the straight pipe (64). The front end of the connecting pipe (66) is connected to the right end of the pipeline (5) on the right side. The pulling assembly (7) comprises a first elastic member (71), a double-axis motor (72), a rotating rod (73), a winding wheel (74), a pulley (75), a flat belt (76) and a pulling wire (77); the first elastic member (71) is wound between the sliding sleeve (62) and the guide rod (61); the double-axis motor (72) is provided at the lower part of the bracket (3); a rotating rod (73) is rotatably provided between the bottoms of the left and right guide rods (61); a winding wheel (74) is provided at the middle part of the rotating rod (73); pulleys (75) are provided on the left and right sides of the rotating rod (73); the same pulleys (75) are provided on the output shafts on both sides of the double-axis motor (72); a flat belt (76) is wound between the front and rear pulleys (75) on the same side; a pulling wire (77) is wound on the winding wheel (74); the tail end of the pulling wire (77) is connected to the lower front part of the right angle plate (65); It also includes an absorption assembly (8) for absorbing gas inside the biogas tank, the absorption assembly (8) including a cylinder body (81), a piston rod (82), a guide ring (83) and an air extraction pipe (84), the cylinder body (81) is provided at the lower part of the right-angle plate (65), the piston rod (82) is slidably provided inside the cylinder body (81), the upper part of the piston rod (82) is located outside the cylinder body (81), the guide ring (83) is provided at the rear side of the left pipeline (5), the air extraction pipe (84) is provided at the bottom of the cylinder body (81), and the tail end of the air extraction pipe (84) passes through the bottom of the straight pipe (64) and the guide ring (83) to be connected to the left pipeline (5); It also includes a contact assembly (9) for automatically sliding the piston rod (82) up and down, the contact assembly (9) including a second elastic member (91), a contact rod (92), a fixing rod (93) and a contact plate (94), the second elastic member (91) being wound between the piston rod (82) and the cylinder body (81), the contact rod (92) being provided at the upper portion of the piston rod (82), two fixing rods (93) being provided at the rear side of the lower portion of the bracket (3), a contact plate (94) being provided between the upper portions of the two fixing rods (93), and the contact rod (92) being moved downward to contact the contact plate (94); Also included is a cleaning component (10) for cleaning residual gas in the pipeline (5), the cleaning component (10) comprising a knob (101), an air bag (102) and an air intake pipe (103), a detachable knob (101) being provided at the tail end of the left pipeline (5), an air bag (102) being provided on the knob (101), and an air intake pipe (103) having a one-way valve being provided at the lower front part of the air bag (102); The bracket (3) further comprises a pressing assembly (11) for automatically squeezing the airbag (102). The pressing assembly (11) comprises a guide frame (111), a sliding plate (112), a third elastic member (113), a fixing plate (114), a right-angle rod (115) and a pressing plate (116). The guide frame (111) is provided at the middle position of the top of the bracket (3). The sliding plate (112) is slidably provided inside the guide frame (111). The lower parts of the front and rear sides of the sliding plate (112) are both inclined. The rear side of the sliding plate (112) is in contact with the right-angle plate (65). The third elastic member (113) is connected between the sliding plate (112) and the guide frame (111). The third elastic member (113) is in a compressed state. The bracket (3) A fixed plate (114) is provided on the left side of the upper front side, and a right-angle rod (115) is slidably provided on the upper part of the fixed plate (114). The lower part of the right-angle rod (115) is in contact with the front side of the sliding plate (112) at this time, and a pressing plate (116) is provided on the upper part of the right-angle rod (115). The pressing plate (116) is currently squeezing the airbag (102); the right-angle plate (65) moves upward until it contacts the sliding plate (112), and the right-angle plate (65) continues to move upward to squeeze the sliding plate (112) to slide forward, the third elastic member (113) is deformed, the sliding plate (112) slides forward to squeeze the right-angle rod (115) to slide downward, and the right-angle rod (115) slides downward to drive the pressing plate (116) to move downward to squeeze the airbag (102).

2. The device for detecting the hydrogen sulfide content in a biogas tank according to claim 1, characterized in that: The connecting pipe (66) is a hose.

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