High-precision natural gas analysis instrument device

Abstract

The invention belongs to the technical field of natural gas analysis instruments, and particularly discloses a high-precision natural gas analysis instrument device which comprises an instrument main body and a display screen, the display screen is fixedly connected to the front end of a fixing frame, a cavity is formed in the instrument main body, and a fixing block is fixedly connected to the rear end of the fixing frame; the fixing block is fixedly connected with the first gear, rotating rods are fixedly connected to the left side and the right side of the fixing block, the sides, away from the fixing block, of the rotating rods are rotationally connected with the inner wall of the cavity, an adjusting mechanism is arranged at the rear end of the first gear, and moving mechanisms are arranged at the top end and the bottom end of the fixing frame. The adjusting mechanism comprises a third gear, the third gear is meshed with the first gear, the third gear is arranged on the sleeve rod in a sleeving mode, through the structural design of the adjusting mechanism, the cavity can be conveniently rotated, and therefore the pitching angle of the display screen can be adjusted.

Description

Technical Field

[0001] The invention belongs to the field of natural gas analysis instruments, and specifically discloses a high-precision natural gas analysis instrument device. Background Art

[0002] Natural gas is a common energy source with a wide range of applications. In order to use natural gas safely and efficiently, it is particularly important to accurately analyze its composition. As the core equipment in this field, natural gas analyzers play an indispensable role.

[0003] An existing high-precision natural gas analysis instrument device may refer to the application number: The Chinese patent of CN201780080452.7 provides a method, device and system for analyzing the moisture content in natural gas. In one embodiment, a portable moisture analyzer system is provided, and the system may include a moisture analyzer and a housing. The moisture analyzer may include a tunable diode laser absorption spectrometer (TDLAS) and a natural gas sample conditioning system. The TDLAS may be configured to detect the water vapor content in a natural gas sample. The sample conditioning system may be in fluid communication with the TDLAS and may be configured to adjust at least one of the temperature, flow rate and pressure of the natural gas sample. The housing may be configured to receive the moisture analyzer therein and protect the moisture analyzer from vibration and / or shock.

[0004] The high-precision natural gas analysis instrument devices in the prior art are generally placed directly on the work surface, and the overall height of the natural gas analysis instrument is limited and the angle of the display screen is fixed, and its pitch angle cannot be adjusted. Therefore, during the detection process, the staff may need to frequently bend or stand up to check the data on the display screen, which is quite inconvenient. Summary of the invention

[0005] In view of this, the technical problem to be solved by the present invention is to propose a high-precision natural gas analysis instrument device to solve the problem that the high-precision natural gas analysis instrument device in the prior art is generally placed directly on the workbench, and the overall height of the natural gas analysis instrument is limited and the angle of the display screen is fixed, and its pitch angle cannot be adjusted. Therefore, during the detection process, the staff may need to frequently bend over or stand up to check the data on the display screen, which is quite inconvenient.

[0006] To achieve the above objectives, the present invention provides a high-precision natural gas analysis instrument device, including an instrument body and a display screen, wherein the display screen is fixedly connected to the front end of a fixed frame, a chamber is opened inside the instrument body, a fixed block is fixedly connected to the rear end of the fixed frame, the fixed block is fixedly connected to a first gear, a rotating rod is fixedly connected to the left and right sides of the fixed block, the side of the rotating rod away from the fixed block is rotatably connected to the inner wall of the chamber, an adjustment mechanism is provided at the rear end of the first gear, and a moving mechanism is provided on the top and bottom ends of the fixed frame.

[0007] In the above technical solution, preferably, the adjusting mechanism includes a third gear, the third gear is meshed with the first gear, the third gear is sleeved on the sleeve rod, the front and rear sides of the sleeve rod are fixedly connected with sliders, the slider is slidably connected to the slide groove, the slide groove is arranged on the inner wall of the support ring, the support ring is sleeved on the sleeve rod, the rear end of the support ring is fixedly connected to the inner wall of the chamber, a moving rod is sleeved inside the sleeve rod, the left and right sides of the moving rod are respectively fixedly connected to the second gear and the rotating block, the right side of the sleeve rod passes through the connecting groove, the connecting groove is arranged on the instrument body, the middle part of the sleeve rod is fixedly connected with a fixing ring, the right side of the fixing ring is fixedly connected with a first spring, and the right side of the first spring is fixedly connected to the inner wall of the chamber; In the above technical solution, preferably, a through groove and a clamping groove are respectively provided on the right side of the sleeve rod and the moving rod, and a plurality of groups of clamping blocks are slidably connected inside the clamping groove and the through groove, and the clamping blocks are fixedly connected to the inner wall of the connecting groove, and the clamping blocks are distributed in a circumference in the connecting groove, and the number of the clamping blocks corresponds to the number of teeth of the third gear, and a groove is provided on the moving rod; In the above technical solution, preferably, the moving mechanism includes two groups of fourth gear and fifth gear, the fourth gear and the fifth gear are both fixedly connected with pulleys, the pulleys are sleeved with belts, the pulleys are rotatably connected with the retaining frame, the fifth gear is meshed with the rack, the rack is fixedly connected in the placement groove, the placement groove is opened on the moving plate, the moving plate is provided with two groups, the two groups of the moving plates are respectively located at the top and bottom of the chamber, the fourth gear is meshed with the driving gear, the rear end of the retaining frame is fixedly connected with a mounting block, and the mounting block is fixedly connected to the inner wall of the chamber; In the above technical solution, preferably, the driving gear is sleeved on the fixed shaft, the interior of the fixed shaft is penetrated by a connecting rod, a convex block is fixedly connected to the left side of the connecting rod, a rectangular groove is provided on the fixed shaft, the right side of the connecting rod is fixedly connected to the connecting block, the connecting block is fixedly connected to the second gear, and a connecting assembly is provided on the fixed shaft; In the above technical solution, preferably, the connecting assembly includes a snap ring, the snap ring is rotatably connected inside the rotating groove, and the rotating groove is opened inside the retaining frame; In the above technical solution, preferably, a long groove is opened at the front end of the movable plate at the bottom, four groups of second springs are fixedly connected to the inner wall of the long groove, and a lifting plate is fixedly connected to the top end of the second spring; In the above technical solution, preferably, the rear end of the movable plate is fixedly connected with two groups of third springs, the rear end of the third spring is fixedly connected with the inner wall of the movable groove, the movable groove is opened inside the chamber, and the movable plate is fixedly connected with two groups of trapezoidal blocks, the trapezoidal blocks are slidably connected in the trapezoidal groove, and the trapezoidal groove is opened on the inner wall of the chamber; In the above technical solution, preferably, the top and bottom ends of the rotating rod are both fixedly connected with second limit blocks, the second limit blocks are in contact with the inner wall of the chamber, and a first limit block is arranged between the two groups of the second limit blocks, and the first limit block is fixedly connected with the inner wall of the chamber; In the above technical solution, preferably, a positioning plate is fixedly connected to the right side of the instrument body, the positioning plate does not contact the rotating block, and positioning grooves are provided on both the rotating block and the positioning plate.

[0008] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the structural design of the adjustment mechanism, it is easy to rotate the chamber, so as to adjust the pitch angle of the display screen, which solves the problem that the high-precision natural gas analysis instrument device in the prior art is generally placed directly on the workbench, and the overall height of the natural gas analysis instrument is limited and the angle of the display screen is fixed, and its pitch angle cannot be adjusted. Therefore, during the detection process, the staff may need to frequently bend or stand up to check the data on the display screen, which is quite inconvenient.

[0009] 2. Through the structural design of the moving mechanism, when the pitch angle of the display screen changes, the moving plate will also move inside the chamber to prevent the moving plate from blocking part of the screen at the top or bottom of the display screen.

[0010] 3. Through the structural design of the card slot, the card block and the through slot, the card block will be stuck in the card slot, so that when the moving rod is not completely pulled out, the moving rod cannot be driven to rotate by rotating the rotating block, thereby avoiding the rotation of the rotating block due to accidental contact.

[0011] 4. Through the structural design of the connecting rod, the protrusion, the rectangular groove and the fixed shaft, the movement of the movable rod drives the connecting rod to move, so that the protrusion is inserted into the rectangular groove. At this time, the rotation of the movable rod will drive the fixed shaft to rotate, so that the driving gear and the movable rod rotate synchronously, and the driving gear can drive the fourth gear to rotate, thereby driving the moving mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention; Figure 3 It is a structural schematic diagram of the connection groove of the present invention; Figure 4 It is a structural schematic diagram of the rear end of the fixing frame of the present invention; Figure 5 It is a structural schematic diagram of the regulating mechanism of the present invention; Figure 6 It is a structural schematic diagram of the mobile mechanism of the present invention; Figure 7 It is a structural schematic diagram of the connection assembly of the present invention; Figure 8 It is a structural schematic diagram of the movable plate of the present invention.

[0013] In the figure: 1, instrument body; 20, display screen; 21, chamber; 22, fixed frame; 23, rotating rod; 24, first gear; 25, fixed block; 26, second gear; 27, third gear; 28, sleeve rod; 29, support ring; 30, slide groove; 31, slider; 32, fixed ring; 33, first spring; 35, rotating block; 36, moving rod; 37, groove; 38, card slot; 39, card block; 40, through groove; 41, connecting block; 42, connecting rod; 43, convex block; 44, rectangular groove; 45, Snap ring; 46, fixed shaft; 47, driving gear; 48, rotating groove; 49, retaining frame; 50, mounting block; 51, fourth gear; 52, belt; 53, fifth gear; 54, rack; 55, pulley; 56, placement groove; 57, movable plate; 58, long groove; 59, second spring; 60, lifting plate; 61, third spring; 62, trapezoidal block; 63, positioning groove; 64, first limit block; 65, second limit block; 66, connecting groove; 67, trapezoidal groove; 68, movable groove; 69, positioning plate. DETAILED DESCRIPTION

[0014] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0015] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0016] like Figure 1 - Figure 8A high-precision natural gas analysis instrument device is shown, comprising an instrument body 1 and a display screen 20, wherein the display screen 20 is fixedly connected to the front end of a fixed frame 22, a chamber 21 is provided inside the instrument body 1, a fixed block 25 is welded and fixed to the rear end of the fixed frame 22, the fixed block 25 is fixed to a first gear 24 by welding, a rotating rod 23 is welded and fixed to both the left and right sides of the fixed block 25, a side of the rotating rod 23 away from the fixed block 25 is rotatably connected to the inner wall of the chamber 21, an adjusting mechanism is provided at the rear end of the first gear 24, and a moving mechanism is provided at the top and bottom ends of the fixed frame 22.

[0017] During operation, a chamber 21 is provided inside the instrument body 1 to provide space for the rotation of the display screen 20 and the fixed frame 22. The display screen 20 is embedded in the fixed frame 22. A fixed block 25 is fixed at the rear end of the fixed frame 22. A first gear 24 is fixed on the fixed block 25. By driving the first gear 24 to rotate, the fixed block 25 can be driven to rotate, thereby adjusting the angle of the fixed frame 22. Rotating rods 23 are fixed on both sides of the fixed block 25 to support the fixed block 25 and ensure that the fixed block 25 can rotate normally. An adjusting mechanism is provided at the rear end of the first gear 24, and the angle of the chamber 21 can be adjusted by the adjusting mechanism. Furthermore, the adjustment mechanism includes a third gear 27, which is meshed with the first gear 24. The third gear 27 is sleeved on the sleeve rod 28. Slide blocks 31 are welded and fixed on both the front and rear sides of the sleeve rod 28. The slide block 31 is slidably connected to the slide groove 30. The slide groove 30 is arranged on the inner wall of the support ring 29. The support ring 29 is sleeved on the sleeve rod 28. The rear end of the support ring 29 is fixed to the inner wall of the chamber 21 by welding. A moving rod 36 is sleeved inside the sleeve rod 28. The left and right sides of the moving rod 36 are respectively welded and fixed to the second gear 26 and the rotating block 35. The right side of the sleeve rod 28 passes through a connecting groove 66, which is arranged on the instrument body 1. A fixing ring 32 is welded and fixed to the middle part of the sleeve rod 28. A first spring 33 is welded and fixed to the right side of the fixing ring 32. The right side of the first spring 33 is fixedly connected to the inner wall of the chamber 21 by welding.

[0018] During operation, when the pitch angle of the display screen 20 is to be adjusted, the rotating block 35 is first pulled to the right, and the rotating block 35 will drive the sleeve rod 28 to move to the right, and the third gear 27 originally meshed with the first gear 24 will be separated from the first gear 24, and when the rotating block 35 is pulled to the maximum moving distance, the second gear 26 fixed on the moving rod 36 will mesh with the first gear 24, and then the moving rod 36 inside the sleeve rod 28 can be driven to rotate by rotating the rotating block 35, and the moving rod 36 can drive the first gear 24 to rotate during the rotation process, thereby adjusting the pitch angle of the display screen 20, wherein in the process of pulling the rotating block 35 to drive the sleeve rod 28 to move, since the sleeve rod 28 is sleeved with the first spring 33, the first spring 33 will be The sleeve rod 28 is deformed to be in an extruded state to ensure that the sleeve rod 28 will not move due to a small vibration. When the rotating block 35 is not pulled, the sleeve rod 28 can move to its original position under the action of the first spring 33, and the third gear 27 fixed on the sleeve rod 28 will re-engage with the first gear 24. In order to ensure that the sleeve rod 28 can only move in the horizontal direction, a slider 31 is fixed on the sleeve rod 28, and the slider 31 slides in the slide groove 30 to prevent the sleeve rod 28 from rotating. Since the sleeve rod 28 cannot rotate, the first gear 24 can be fixed when the first gear 24 is engaged with the third gear 27. At this time, the display screen 20 cannot rotate to avoid external force pushing the display screen 20 and changing its angle. The sleeve rod 28 is supported by the support ring 29; Furthermore, a through groove 40 and a clamping groove 38 are respectively provided on the right side of the sleeve rod 28 and the movable rod 36. The length of the through groove 40 is twice that of the clamping groove 38. The internal sliding connection of the clamping groove 38 and the through groove 40 is provided with a plurality of groups of clamping blocks 39. The clamping blocks 39 are welded and fixed on the inner wall of the connecting groove 66. The clamping blocks 39 are distributed in a circle in the connecting groove 66. The number of the clamping blocks 39 corresponds to the number of teeth of the third gear 27. The angle of the clamping blocks 39 also corresponds to the third gear 27. A groove 37 is provided on the movable rod 36.

[0019] During operation, through the structural design of the slot 38, the block 39 and the through slot 40, the block 39 will be stuck in the slot 38, so that when the moving rod 36 is not fully pulled out, the moving rod 36 cannot be driven to rotate by rotating the rotating block 35, so as to avoid the rotating block 35 from rotating due to accidental contact. When the third gear 27 is engaged with the first gear 24, the block 39 will be stuck in the through slot 40 of the slot 38. At this time, the rotating block 35 cannot rotate due to the abutment between the slot 38 and the block 39, so as to avoid the rotating block 35 from rotating due to accidental contact. In the process of pulling the rotating block 35 to the right to the maximum distance , the block 39 will gradually slide out of the slot 38 until it does not abut against the inner wall of the slot 38, and a groove 37 is provided on the moving rod 36 to ensure that the moving rod 36 does not abut against the block 39 during the rotation process, wherein multiple groups of blocks 39 are distributed circumferentially, and the number of blocks 39 provided is the same as the number of teeth of the third gear 27 and is aligned with the third gear 27, so as to ensure that the block 39 can be reinserted into the slot 38 only when the rotating block 35 is rotated at a fixed angle, thereby ensuring that the third gear 27 can correctly mesh with the first gear 24 when the rotating block 35 is not pulled, and avoid abutment; Furthermore, the moving mechanism includes two groups of fourth gears 51 and fifth gears 53, and pulleys 55 are welded and fixed on the fourth gears 51 and the fifth gears 53, and belts 52 are sleeved on the pulleys 55. The pulleys 55 are rotatably connected to the retaining frame 49, and the fifth gear 53 is meshed with the rack 54. The rack 54 is welded and fixed in the placement groove 56. The placement groove 56 is opened on the moving plate 57. The moving plate 57 is provided with two groups, and the two groups of moving plates 57 are respectively located at the top and bottom ends of the chamber 21. The fourth gear 51 is meshed with the driving gear 47, and a mounting block 50 is welded and fixed to the rear end of the retaining frame 49, and the mounting block 50 is fixed to the inner wall of the chamber 21 by welding.

[0020] During operation, through the structural design of the moving mechanism, when the pitch angle of the display screen 20 changes, the moving plate 57 will also move inside the chamber 21 to prevent the moving plate 57 from blocking part of the screen at the top or bottom of the display screen 20, driving the driving gear 47 to rotate and ensuring that the rotation direction is the same as that of the rotating block 35. When the driving gear 47 rotates, it will drive the fifth gear 53 to rotate in the opposite direction through the fourth gear 51, so that the moving plate 57 is driven to move through the meshing of the fifth gear 53 and the rack 54. When the display screen 20 rotates clockwise, the rotating block 35 needs to be rotated counterclockwise. The counterclockwise rotation of the driving gear 47 will drive the fifth gear 53 to rotate clockwise, and the rack 54 at the top will drive the movable plate 57 on the top to move backward, and the rack 54 at the bottom will drive the movable plate 57 on the bottom to move forward. At this time, the movable plate 57 at the top will be retracted into the interior of the instrument body 1, and the movable plate 57 at the bottom will be extended to ensure that the movable plate 57 does not block the display screen 20. The display screen 20 rotates counterclockwise in the same way. At the same time, the movable plate 57 can also seal the chamber 21 when the display screen 20 rotates to reduce external dust or debris from entering the interior of the chamber 21. Furthermore, the driving gear 47 is sleeved on the fixed shaft 46, the interior of the fixed shaft 46 is penetrated by the connecting rod 42, a protrusion 43 is welded and fixed on the left side of the connecting rod 42, a rectangular groove 44 is opened on the fixed shaft 46, the right side of the connecting rod 42 is fixed to the connecting block 41 by welding, the connecting block 41 is fixed to the second gear 26 by welding, and a connecting component is provided on the fixed shaft 46.

[0021] During operation, through the structural design of the connecting rod 42, the protrusion 43, the rectangular groove 44 and the fixed shaft 46, the movement of the moving rod 36 drives the connecting rod 42 to move, so that the protrusion 43 is inserted into the rectangular groove 44. At this time, the rotation of the moving rod 36 will drive the fixed shaft 46 to rotate, so that the driving gear 47 and the moving rod 36 rotate synchronously, and the driving gear 47 can drive the fourth gear 51 to rotate, so as to drive the moving mechanism. When the rotating block 35 is pulled to make the second gear 26 mesh with the first gear 24, the second gear 26 will also drive the connecting rod 42 to move, and the protrusion 43 fixed on the connecting rod 42 will be inserted into the rectangular groove 44. Through the contact between the protrusion 43 and the inner wall of the rectangular groove 44, the connecting rod 42 can drive the fixed shaft 46 to rotate when it rotates, so that the driving gear 47 can rotate synchronously with the second gear 26. Furthermore, the connection assembly includes a snap ring 45 , which is rotatably connected inside a rotation groove 48 , and the rotation groove 48 is provided inside a retaining frame 49 .

[0022] During operation, the driving gear 47 is rotatably connected to the retaining frame 49 through the connecting assembly. The size of the snap ring 45 is larger than the fixed shaft 46. A rotation groove 48 corresponding to the snap ring 45 is provided inside the retaining frame 49. The fixed shaft 46 penetrates the retaining frame 49 and rotates inside the rotation groove 48 through the snap ring 45. First, the fixed shaft 46 is connected to the rotation of the retaining frame 49 to avoid separation. Furthermore, a long slot 58 is formed at the front end of the bottom movable plate 57 , and four groups of second springs 59 are welded and fixed on the inner wall of the long slot 58 , and a lifting plate 60 is welded and fixed on the top end of the second spring 59 .

[0023] During operation, in order to prevent the movable plate 57 on the bottom from abutting against the bottom part of the display screen 20 during the rotation of the display screen 20, a long groove 58 is provided on the movable plate 57, a second spring 59 is fixed inside the long groove 58, and a lifting plate 60 connected to the top of the second spring 59 can move in the long groove 58, thereby ensuring that when the display screen 20 rotates, its bottom part can avoid abutting against the movable plate 57 through the lifting and lowering of the lifting plate 60; Furthermore, two groups of third springs 61 are welded and fixed to the rear end of the movable plate 57, and the rear end of the third spring 61 is fixed to the inner wall of the movable groove 68 by welding. The movable groove 68 is opened inside the chamber 21, and two groups of trapezoidal blocks 62 are welded and fixed on the movable plate 57. The trapezoidal blocks 62 are slidably connected in the trapezoidal groove 67. The size of the trapezoidal groove 67 is adapted to the trapezoidal blocks 62, and the trapezoidal groove 67 is opened on the inner wall of the chamber 21.

[0024] When working, the third spring 61 is used to provide support for the moving plate 57. A trapezoidal block 62 is fixed on the moving plate 57. The sliding of the trapezoidal block 62 in the trapezoidal groove 67 ensures that the moving plate 57 can move stably in the chamber 21, and at the same time limits the movement of the moving plate 57 in the left and right directions to reduce the shaking of the moving plate 57. Furthermore, second limit blocks 65 are welded and fixed on the top and bottom ends of the rotating rod 23, and the second limit blocks 65 are in contact with the inner wall of the chamber 21. A first limit block 64 is arranged between the two groups of second limit blocks 65, and the first limit block 64 is welded and fixed to the inner wall of the chamber 21.

[0025] During operation, when the rotating block 35 is rotated to adjust the angle of the display screen 20, in order to limit the maximum rotation angle of the display screen 20, a second limit block 65 is fixed on the rotating rod 23, and the first limit block 64 is located between the two groups of second limit blocks 65. When the rotating rod 23 rotates, when the second limit block 65 abuts against the first limit block 64, the rotating rod 23 rotates to the maximum angle and cannot rotate further; Furthermore, a positioning plate 69 is welded and fixed to the right side of the instrument body 1 , and the positioning plate 69 does not contact the rotating block 35 . Both the rotating block 35 and the positioning plate 69 are provided with positioning grooves 63 .

[0026] During operation, positioning grooves 63 are provided on both the rotating block 35 and the positioning plate 69. The number and angle of the positioning grooves 63 also correspond to those of the card block 39. When the positioning grooves 63 on the rotating block 35 and the positioning plate 69 are aligned, the rotating block 35 is no longer pulled. The card block 39 can slide smoothly into the card groove 38, and the third gear 27 can also mesh smoothly with the first gear 24.

[0027] Working principle: a chamber 21 is opened inside the instrument body 1 to provide space for the rotation of the display screen 20 and the fixed frame 22. The display screen 20 is embedded in the fixed frame 22. A fixed block 25 is fixed at the rear end of the fixed frame 22. A first gear 24 is fixed on the fixed block 25. By driving the first gear 24 to rotate, the fixed block 25 can be driven to rotate, thereby adjusting the angle of the fixed frame 22. Rotating rods 23 are fixed on both sides of the fixed block 25 for supporting the fixed block 25 and ensuring that the fixed block 25 can rotate normally. An adjusting mechanism is provided at the rear end of the first gear 24, and the angle of the chamber 21 can be adjusted through the adjusting mechanism.

[0028] When the pitch angle of the display screen 20 is to be adjusted, the rotating block 35 is first pulled to the right, and the rotating block 35 will drive the sleeve rod 28 to move to the right, and the third gear 27 originally meshed with the first gear 24 will be separated from the first gear 24, and when the rotating block 35 is pulled to the maximum moving distance, the second gear 26 fixed on the moving rod 36 will mesh with the first gear 24, and then the moving rod 36 inside the sleeve rod 28 can be driven to rotate by rotating the rotating block 35, and the moving rod 36 can drive the first gear 24 to rotate during the rotation process, thereby adjusting the pitch angle of the display screen 20. In the process of pulling the rotating block 35 to drive the sleeve rod 28 to move, since the first spring 33 is sleeved on the sleeve rod 28, the first spring 33 will be deformed. , so that it is in an extruded state to ensure that the sleeve rod 28 does not move due to minor vibrations. When the rotating block 35 is not pulled, the sleeve rod 28 can move to its original position under the action of the first spring 33, and the third gear 27 fixed on the sleeve rod 28 will re-engage with the first gear 24. In order to ensure that the sleeve rod 28 can only move in the horizontal direction, a slider 31 is fixed to the sleeve rod 28, and the slider 31 slides in the slide groove 30 to prevent the sleeve rod 28 from rotating. Since the sleeve rod 28 cannot rotate, when the first gear 24 is engaged with the third gear 27, the first gear 24 can be fixed. At this time, the display screen 20 cannot rotate to avoid external force pushing the display screen 20 and changing its angle. The sleeve rod 28 is supported by the support ring 29.

[0029] Through the structural design of the moving mechanism, when the pitch angle of the display screen 20 changes, the moving plate 57 will also move inside the chamber 21 to prevent the moving plate 57 from blocking part of the screen at the top or bottom of the display screen 20, driving the driving gear 47 to rotate and ensuring that the rotation direction is the same as that of the rotating block 35. When the driving gear 47 rotates, it will drive the fifth gear 53 to rotate in the opposite direction through the fourth gear 51, so that the moving plate 57 is driven to move through the meshing of the fifth gear 53 and the rack 54. When the display screen 20 rotates clockwise, the rotating block 35 needs to be rotated counterclockwise, and the driving gear 47 is driven to rotate counterclockwise. The counterclockwise rotation of the gear 47 will drive the fifth gear 53 to rotate clockwise, and the rack 54 at the top will drive the movable plate 57 on the top to move backward, and the rack 54 at the bottom will drive the movable plate 57 on the bottom to move forward. At this time, the movable plate 57 at the top will retract into the interior of the instrument body 1, and the movable plate 57 at the bottom will extend to ensure that the movable plate 57 does not block the display screen 20. The display screen 20 rotates counterclockwise in the same way. At the same time, the movable plate 57 can also close the chamber 21 when the display screen 20 rotates to reduce the entry of external dust or debris into the interior of the chamber 21.

[0030] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A high-precision natural gas analysis instrument device, comprising an instrument body (1) and a display screen (20), wherein the display screen (20) is fixedly connected to a front end of a fixed frame (22), characterized in that: A chamber (21) is provided inside the instrument body (1); a fixed block (25) is fixedly connected to the rear end of the fixed frame (22); the fixed block (25) is fixedly connected to a first gear (24); a rotating rod (23) is fixedly connected to both the left and right sides of the fixed block (25); a side of the rotating rod (23) away from the fixed block (25) is rotatably connected to the inner wall of the chamber (21); an adjusting mechanism is provided at the rear end of the first gear (24); and a moving mechanism is provided at the top and bottom ends of the fixed frame (22).

2. A high-precision natural gas analysis instrument according to claim 1, characterized in that: The adjusting mechanism comprises a third gear (27), the third gear (27) meshing with the first gear (24), the third gear (27) being sleeved on a sleeve rod (28), the front and rear sides of the sleeve rod (28) being fixedly connected with sliders (31), the sliders (31) being slidably connected to a slide groove (30), the slide groove (30) being formed on the inner wall of a support ring (29), the support ring (29) being sleeved on the sleeve rod (28), the rear end of the support ring (29) being fixedly connected to the inner wall of the chamber (21), A moving rod (36) is sleeved inside the sleeve rod (28), and the left and right sides of the moving rod (36) are fixedly connected to the second gear (26) and the rotating block (35) respectively. The right side of the sleeve rod (28) passes through a connecting groove (66), and the connecting groove (66) is opened on the instrument body (1). The middle part of the sleeve rod (28) is fixedly connected to a fixing ring (32), and the right side of the fixing ring (32) is fixedly connected to a first spring (33), and the right side of the first spring (33) is fixedly connected to the inner wall of the chamber (21).

3. A high-precision natural gas analysis instrument according to claim 2, characterized in that: The right sides of the sleeve rod (28) and the moving rod (36) are respectively provided with a through groove (40) and a clamping groove (38); the clamping groove (38) and the through groove (40) are slidably connected to the inside of the clamping groove (38) and a plurality of clamping blocks (39); the clamping blocks (39) are fixedly connected to the inner wall of the connecting groove (66); the clamping blocks (39) are distributed in a circular pattern in the connecting groove (66); the number of the clamping blocks (39) corresponds to the number of teeth of the third gear (27); and the moving rod (36) is provided with a groove (37).

4. A high-precision natural gas analysis instrument according to claim 3, characterized in that: The moving mechanism comprises two groups of fourth gears (51) and fifth gears (53). The fourth gears (51) and fifth gears (53) are both fixedly connected with pulleys (55). The pulleys (55) are sleeved with belts (52). The pulleys (55) are rotatably connected with a retaining frame (49). The fifth gear (53) meshes with a rack (54). The rack (54) is fixedly connected in a placement groove (56). The placement groove (56) is provided on a moving plate (57). Two groups of the moving plates (57) are provided. The two groups of the moving plates (57) are respectively located at the top and bottom of the chamber (21). The fourth gear (51) meshes with a driving gear (47). The rear end of the retaining frame (49) is fixedly connected with a mounting block (50). The mounting block (50) is fixedly connected to the inner wall of the chamber (21).

5. A high-precision natural gas analysis instrument according to claim 4, characterized in that: The driving gear (47) is sleeved on the fixed shaft (46); the interior of the fixed shaft (46) is penetrated by a connecting rod (42); a protrusion (43) is fixedly connected to the left side of the connecting rod (42); a rectangular groove (44) is provided on the fixed shaft (46); the right side of the connecting rod (42) is fixedly connected to a connecting block (41); the connecting block (41) is fixedly connected to the second gear (26); and a connecting assembly is provided on the fixed shaft (46).

6. A high-precision natural gas analysis instrument according to claim 5, characterized in that: The connection assembly comprises a snap ring (45), wherein the snap ring (45) is rotatably connected inside a rotation groove (48), and the rotation groove (48) is opened inside a retaining frame (49).

7. A high-precision natural gas analysis instrument according to claim 6, characterized in that: A long slot (58) is provided at the front end of the movable plate (57) at the bottom end, four groups of second springs (59) are fixedly connected to the inner wall of the long slot (58), and a lifting plate (60) is fixedly connected to the top end of the second spring (59).

8. A high-precision natural gas analysis instrument according to claim 7, characterized in that: The rear end of the movable plate (57) is fixedly connected to two groups of third springs (61), and the rear end of the third springs (61) is fixedly connected to the inner wall of a movable groove (68), and the movable groove (68) is opened inside the chamber (21). The movable plate (57) is fixedly connected to two groups of trapezoidal blocks (62), and the trapezoidal blocks (62) are slidably connected in the trapezoidal groove (67), and the trapezoidal groove (67) is opened on the inner wall of the chamber (21).

9. A high-precision natural gas analysis instrument according to claim 8, characterized in that: A second limit block (65) is fixedly connected to the top and bottom ends of the rotating rod (23), the second limit block (65) is in contact with the inner wall of the chamber (21), and a first limit block (64) is arranged between the two groups of the second limit blocks (65), the first limit block (64) is fixedly connected to the inner wall of the chamber (21).

10. A high-precision natural gas analysis instrument according to claim 9, characterized in that: A positioning plate (69) is fixedly connected to the right side of the instrument body (1); the positioning plate (69) does not contact the rotating block (35); and positioning grooves (63) are provided on both the rotating block (35) and the positioning plate (69).

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