Gas sampling device for trace moisture meter

Abstract

The invention discloses a gas sample introduction device for a trace moisture meter, and relates to the technical field of gas sample introduction, the gas sample introduction device comprises a bottom shell, the top surface of the bottom shell is provided with a gas hole, the left and right sides of the outer wall of the bottom shell are fixedly provided with a U-shaped frame, the middle of the top surface of the U-shaped frame is fixedly embedded with a servo electric cylinder, and the bottom surface of the telescopic end of the servo electric cylinder is fixedly provided with a transverse plate; a round plate is fixed to the bottom face of the transverse plate, a valve pipe penetrates through and is fixedly installed on the top face of the round plate, the valve pipe is located in front of the servo electric cylinder, a telescopic bag is fixed to the bottom face of the round plate, a chassis is fixed to the bottom face of the telescopic bag, an air hole is formed in the middle of the bottom face of the chassis, and two sliding pipes penetrate through and are fixed to the two sides of the top face of the transverse plate. Inert gas can be slowly pressed into the moisture meter main body through the telescopic bag, so that the problem of inaccurate detection data caused by difficulty in conveying the inert gas into the moisture meter main body by the gas sampling device is solved.

Description

Technical Field

[0001] The invention relates to the technical field of gas sampling, and in particular to a gas sampling device for a trace moisture meter. Background Art

[0002] The trace moisture meter is used to detect the trace moisture content in the gas and is widely used in the power, petroleum, chemical, pharmaceutical, food and other industries. The main function of the gas sampling device is to efficiently and accurately transmit the gas sample to the trace moisture meter.

[0003] The patent with publication number CN212255267U discloses a gas sampling device for an intelligent trace moisture meter, comprising a moisture meter body, a card slot being fixedly connected to the rear surface of the moisture meter body, an air inlet pipe being fixedly connected to the upper surface of the moisture meter body, a cover being fixedly connected to the side surface of the air inlet pipe, an air outlet pipe being movably connected inside the cover body, a limiting ring being fixedly connected to the outer surface of the air outlet pipe, a rubber sealing pad being fixedly connected to the lower surface of the limiting ring, and a heating chamber being fixedly connected to one end of the air outlet pipe away from the cover body. The patent replaces the air inlet hose with a metal pipe, so that the air inlet device does not deform during the air inlet process, thereby stabilizing the gas flow rate, making the detection of gas moisture more accurate and improving the precision. By providing a heating chamber, when the external temperature is low, the air inlet device is heated by the heating pipe to prevent condensation inside the metal, thereby improving the accuracy of gas moisture determination.

[0004] However, the gas sampling device currently used in the intelligent trace moisture meter has the following problems: when the gas sampling device is conveying gas into the trace moisture meter for detection, it is difficult for inert gas to enter the trace moisture meter, which leads to inaccurate measurement data of the moisture meter body. Therefore, we propose a gas sampling device for the trace moisture meter. Summary of the invention

[0005] The present invention provides a gas sampling device for a trace moisture meter, which solves the problem in the related art that it is difficult for inert gas to enter the trace moisture meter, thereby causing inaccurate measurement data of the moisture meter body.

[0006] The technical scheme of the present invention is as follows: a gas sampling device for a trace moisture meter, comprising a bottom shell, the top surface of the bottom shell is provided with air holes, U-shaped frames are fixed on the left and right sides of the outer wall of the bottom shell, a servo electric cylinder is embedded in the middle of the top surface of the U-shaped frame, a horizontal plate is fixed on the bottom surface of the telescopic end of the servo electric cylinder, a circular plate is fixed on the bottom surface of the horizontal plate, a valve tube is penetrated and fixedly installed on the top surface of the circular plate, the valve tube is located in front of the servo electric cylinder, a telescopic bag is fixed on the bottom surface of the circular plate, a chassis is fixed on the bottom surface of the telescopic bag, an air hole is opened in the middle of the bottom surface of the chassis, and both sides of the top surface of the horizontal plate Two sliding tubes are passed through and fixed, two straight rods are fixed on the top of the U-shaped frame, the bottom surfaces of the two straight rods are fixedly connected to the top surface of the bottom shell, the inner walls of the two sliding tubes are slidably connected to the outer walls of the two straight rods, and two springs are fixed to the bottom surface of the cross plate, and one end of the two springs away from the cross plate is fixedly connected to the top surface of the bottom shell. Under the elastic force of the spring, the telescopic bag can slowly press the inert gas into the moisture meter body, so that the moisture meter body can accurately determine the water content of the sample gas, and the elastic force of the spring slows down the shaking of the cross plate when it is pressed down, so that the circular plate can stably press down the telescopic bag.

[0007] Optionally, a moisture meter body is fixedly installed on the top of the bottom shell, a data cable is fixedly installed on the front of the moisture meter body, a controller is fixed on the end of the data cable away from the moisture meter body, a touch screen is fixed on the front of the controller, and the touch screen passes through and is fixed on the back of the inner wall of the bottom shell.

[0008] Optionally, the two sliding tubes are located on the left and right sides of the servo electric cylinder, a connecting piece is provided at the right end of the valve tube, and the two springs are respectively sleeved on two straight rods.

[0009] Optionally, limiting devices are provided on the left and right sides of the horizontal plate, and the limiting devices are used to limit the position when the telescopic bag is pressurizing gas. The inner wall of the limiting device is provided with an anti-pinch device, and the anti-pinch device is used to prevent the spring from pinching the hand when the telescopic bag is pressurizing gas.

[0010] Optionally, U-shaped blocks are fixed on the left and right sides of the cross plate, two cross bars are respectively fixed on the sides of the two U-shaped blocks away from each other, two hole blocks are respectively fixed on the ends of the two cross bars away from each other, two triangular frames are fixed to the bottom of the inner wall of the U-shaped frame, two thin rods are respectively fixed to the top surfaces of the two triangular frames, one end of the two thin rods away from the two triangular frames is fixedly connected to the top of the inner wall of the U-shaped frame, the inner walls of the two hole blocks are slidably connected to the outer walls of the two thin rods, the top surfaces of the two triangular frames are on the movement trajectory of the bottom surfaces of the two hole blocks, the hole blocks contact with the triangular frames during the downward movement, the triangular frames limit the hole blocks, so that the cross plate does not continue to move downward.

[0011] Optionally, two straight ring blocks are fixed in the middle of the outer walls of the two cross bars, two square openings are respectively opened on the front sides of the two straight ring blocks, two short rods are respectively fixed on the top surfaces of the two straight ring blocks, four ring frames are respectively fixed on the left and right sides of the two short rods in groups of two, four sponge blocks are respectively fixed on the inner walls of the four ring frames, the inner walls of two sponge blocks are in sliding contact with the outer walls of the two straight rods, and the inner walls of the other two sponge blocks are in sliding contact with the outer walls of the two thin rods, the ring frames drive the sponge blocks to move downward, and the sponge blocks wipe the lubricating oil on the straight rods and the thin rods to prevent the straight rods and the thin rods from rusting and aging quickly.

[0012] Optionally, two square rods are fixed to the inner walls of the square openings of the two straight ring blocks, two rectangular plates are fixed to the front sides of the two square rods, two short columns are passed through and fixed to the front sides of the two rectangular plates, two arc-long plates are fixed to the back sides of the two short columns, the two arc-long plates are located directly in front of the two springs, the short columns drive the arc-long plates to move downward, and during the downward movement of the arc-long plates, the arc-long plates block the contracted springs.

[0013] Optionally, two connecting rods are respectively passed through and fixed on the bottom of the outer walls of the two arc-long plates, and two I-shaped blocks are respectively fixed on the sides of the two connecting rods away from each other, and two L-shaped groove plates are fixed on the top surface of the bottom shell, and the two L-shaped groove plates are located in front of the two triangular frames. The inner walls of the two I-shaped blocks are slidably connected to the inner walls of the two L-shaped groove plates, and the connecting rods drive the I-shaped blocks to move downward, and the I-shaped blocks slide downward in the L-shaped groove plates, so that the arc-long plates remain stable during the downward movement.

[0014] The working principle and beneficial effects of the present invention are: 1. In the present invention, through the bottom shell, U-shaped frame, servo electric cylinder, cross plate, circular plate, valve tube, telescopic bag, chassis, sliding tube and straight rod with spring, the cross plate drives the circular plate to move downward, the circular plate drives the telescopic bag to move downward, the telescopic bag is restricted by the chassis, the telescopic bag begins to shrink, the cross plate drives the sliding tube to move downward, the sliding tube slides downward on the straight rod, the spring on the cross plate begins to shrink, and under the elastic force of the spring, the telescopic bag slowly pushes the sample gas into the air inlet of the chassis, so that the telescopic bag can slowly press the inert gas into the moisture meter body, so that the moisture meter body can accurately obtain the water content of the sample gas, and prevent the gas sampling device from having difficulty in conveying the inert gas into the moisture meter body, resulting in inaccurate detection data, the elastic force of the spring slows down the shaking of the cross plate when it is pressed down, and allows the circular plate to stably press down the telescopic bag, and prevents the telescopic bag from shaking when it shrinks, which causes the telescopic bag to be easily broken and damaged.

[0015] 2. In the present invention, by setting the limiting device, the U-shaped block, the cross bar, the hole block and the triangular frame cooperate with the thin rod. The hole block contacts the triangular frame during the downward movement. The triangular frame limits the hole block so that the cross plate will not continue to move downward, thereby preventing the telescopic bag from being squeezed and causing the telescopic bag to be easily damaged.

[0016] 3. In the present invention, by setting the limiting device, the straight ring block, the short rod and the ring frame cooperate with the sponge block, the ring frame drives the sponge block to move downward, and the sponge block wipes the lubricating oil on the straight rod and the thin rod, so that the straight rod and the thin rod will not rust and age quickly, and prevent the straight rod and the thin rod from aging and rusting easily during the long-term use of the gas injection device, causing the equipment to push gas unsmoothly.

[0017] 4. In the present invention, by setting the anti-pinch device, the square rod, the rectangular plate and the short column cooperate with the arc-long plate, and the short column drives the arc-long plate to move downward. During the downward movement of the arc-long plate, the arc-long plate blocks the contracted spring to prevent the contracted spring from clamping the operator and causing injury.

[0018] 5. In the present invention, by setting the anti-pinch device, the connecting rod and the I-shaped block cooperate with the L-shaped groove plate, the connecting rod drives the I-shaped block to move downward, and the I-shaped block slides downward in the L-shaped groove plate, so that the arc plate remains stable during the downward movement, preventing the arc plate from shaking during the downward movement and causing the equipment to run unsmoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present invention.

[0020] Figure 1 A schematic diagram of the present invention as a whole; Figure 2 It is a schematic diagram of the internal structure of the bottom shell of the present invention; Figure 3 It is a cross-sectional schematic diagram of the telescopic bag of the present invention; Figure 4 For the present invention Figure 3 A local enlarged schematic diagram of the middle A; Figure 5 is a schematic diagram of a limiting device of the present invention; Figure 6 For the present invention Figure 5 A partial enlarged schematic diagram of point B in the middle; Figure 7 is a cross-sectional schematic diagram of the anti-pinch device of the present invention; Figure 8 For the present invention Figure 7 A partial enlarged schematic diagram of point C in the middle.

[0021] In the figure: 1, bottom shell; 2, U-shaped frame; 3, servo electric cylinder; 4, horizontal plate; 5, round plate; 6, valve tube; 7, telescopic bag; 8, chassis; 9, sliding tube; 10, straight rod; 11, spring; 12, limit device; 121, U-shaped block; 122, horizontal rod; 123, hole block; 124, triangle frame; 125, thin rod; 126, straight ring block; 127, short rod; 128, ring frame; 129, sponge block; 13, anti-pinch device; 131, square rod; 132, rectangular plate; 133, short column; 134, arc long plate; 135, connecting rod; 136, I-shaped block; 137, L-shaped groove plate; 14, moisture meter body; 15, data line; 16, controller; 17, touch screen. DETAILED DESCRIPTION In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0022] In order to simplify the drawings, only the parts related to the invention are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0023] In this document, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0025] Example 1 Reference Figure 1 to Figure 8, which is the first embodiment of the present invention, proposes a gas sampling device for a trace moisture meter, including a bottom shell 1, the top surface of the bottom shell 1 is provided with an air hole, U-shaped frames 2 are fixed on the left and right sides of the outer wall of the bottom shell 1, a servo electric cylinder 3 is embedded in the middle of the top surface of the U-shaped frame 2, a horizontal plate 4 is fixed to the bottom surface of the telescopic end of the servo electric cylinder 3, a circular plate 5 is fixed to the bottom surface of the horizontal plate 4, a valve tube 6 is penetrated and fixedly installed on the top surface of the circular plate 5, and the valve tube 6 is located in front of the servo electric cylinder 3, a telescopic bag 7 is fixed to the bottom surface of the circular plate 5, a chassis 8 is fixed to the bottom surface of the telescopic bag 7, an air hole is opened in the middle of the bottom surface of the chassis 8, two sliding pipes 9 are penetrated and fixed on both sides of the top surface of the horizontal plate 4, and the top of the U-shaped frame 2 is fixed There are two straight rods 10, the bottom surfaces of the two straight rods 10 are fixedly connected to the top surface of the bottom shell 1, the inner walls of the two sliding tubes 9 are slidably connected to the outer walls of the two straight rods 10, two springs 11 are fixed to the bottom surface of the cross plate 4, and the ends of the two springs 11 away from the cross plate 4 are fixedly connected to the top surface of the bottom shell 1, the two sliding tubes 9 are located on the left and right sides of the servo electric cylinder 3, and a connecting piece is provided at the right end of the valve tube 6. The two springs 11 are respectively sleeved on the two straight rods 10, and a moisture meter body 14 is fixedly installed at the top of the bottom shell 1, and a data line 15 is fixedly installed on the front of the moisture meter body 14, and a controller 16 is fixed on the end of the data line 15 away from the moisture meter body 14, and the front of the controller 16 is fixed. There is a touch screen 17, which penetrates and is fixed on the back of the inner wall of the bottom shell 1. Limiting devices 12 are arranged on the left and right sides of the horizontal plate 4. The limiting devices 12 are used to limit the position of the telescopic bag 7 when it presses and delivers gas. The inner wall of the limiting device 12 is provided with an anti-pinching device 13. The anti-pinching device 13 is used to prevent the spring 11 from pinching the hand when the telescopic bag 7 presses and delivers gas. The horizontal plate 4 drives the circular plate 5 to move downward, and the circular plate 5 drives the telescopic bag 7 to move downward. The telescopic bag 7 is restricted by the chassis 8, and the telescopic bag 7 begins to shrink. At the same time, the horizontal plate 4 drives the sliding tube 9 to move downward, and the sliding tube 9 slides downward on the straight rod 10. The spring 11 on the horizontal plate 4 begins to shrink. Under the elastic force of the spring 11, The bellows 7 slowly pushes the sample gas into the air inlet of the chassis 8, and the sample gas enters the moisture meter body 14 through the air inlet of the chassis 8, so that the bellows 7 can slowly press the inert gas into the moisture meter body 14, so that the moisture meter body 14 can accurately obtain the water content of the sample gas, thereby preventing the gas sampling device from having difficulty in delivering the inert gas into the moisture meter body 14, resulting in inaccurate detection data. Under the elastic force of the spring 11, the elastic force of the spring 11 slows down the shaking of the horizontal plate 4 when it is pressed down, allowing the circular plate 5 to stably press down the bellows 7, thereby preventing the gas sampling device from shaking when the bellows 7 contracts during gas delivery, resulting in easy breakage and damage of the bellows 7.

[0026] In this embodiment, since it is difficult for inert gas to enter the trace moisture meter when the gas sampling device conveys gas into the trace moisture meter for detection, when in use, the operator connects the gas storage bottle containing the sample gas with the connecting piece of the valve tube 6, opens the valve tube 6, and the valve tube 6 conveys the sample gas into the telescopic bag 7, closes the valve tube 6, and removes the gas storage bottle. At the same time, the bottom shell 1 supports the U-shaped frame 2, and the U-shaped frame 2 supports the servo electric cylinder 3. The operator uses the touch screen 17 to start the servo electric cylinder 3. The telescopic end of the servo electric cylinder 3 drives the cross plate 4 to move downward, the cross plate 4 drives the circular plate 5 to move downward, and the circular plate 5 drives the telescopic bag 7 to move downward. The telescopic bag 7 is restricted by the chassis 8, and the telescopic bag 7 begins to shrink. At the same time, the cross plate 4 drives the sliding tube 9 to move downward, and the sliding tube 9 slides downward on the straight rod 10. The spring 11 on the cross plate 4 begins to shrink. Under the elastic force of the spring 11, the telescopic bag 7 slowly pushes the sample gas into the air inlet of the chassis 8. The sample gas enters the moisture meter body 14 through the air inlet of the chassis 8, and the moisture meter body 14 transmits the obtained data to the data line 15, and the data line 15 transmits the data to the controller 16. The touch screen 17 displays the water content data of the sample gas, so that the bellows 7 can slowly press the inert gas into the moisture meter body 14, so that the moisture meter body 14 can accurately obtain the water content of the sample gas, and prevent the inert gas from entering the moisture meter body 14 for detection when the equipment is in use, thereby avoiding the problem that the gas sampling device is difficult to transport the inert gas into the moisture meter body 14, causing inaccurate detection data. At the same time, under the elastic force of the spring 11, the elastic force of the spring 11 slows down the shaking of the horizontal plate 4 when it is pressed down, allowing the circular plate 5 to stably press down the bellows 7, and preventing the bellows 7 from contracting and shaking when the equipment is in use, thereby avoiding the problem that the bellows 7 is easily broken and damaged when the gas sampling device contracts when delivering gas.

[0027] Example 2 Reference Figure 1 to Figure 8 , which is the second embodiment of the present invention, and this embodiment is different from the first embodiment in that: Compared with Example 1, further, U-shaped blocks 121 are fixed on the left and right sides of the cross plate 4, two cross bars 122 are respectively fixed on the sides of the two U-shaped blocks 121 away from each other, and two hole blocks 123 are respectively fixed on the ends of the two cross bars 122 away from each other, and two triangular frames 124 are fixed on the bottom of the inner wall of the U-shaped frame 2, and two thin rods 125 are respectively fixed on the top surfaces of the two triangular frames 124, and the ends of the two thin rods 125 away from the two triangular frames 124 are fixedly connected to the top of the inner wall of the U-shaped frame 2, and the inner walls of the two hole blocks 123 are slidably connected to the outer walls of the two thin rods 125, and the top surfaces of the two triangular frames 124 are on the movement trajectory of the bottom surfaces of the two hole blocks 123. The hole blocks 123 contact the triangular frames 124 during the downward movement, and the triangular frames 124 limit the hole blocks 123, so that the cross plate 4 will not continue to move downward, thereby avoiding excessive squeezing of the telescopic bag 7 by the gas sampling device during gas delivery, causing the telescopic bag 7 to be easily damaged.

[0028] Two straight ring blocks 126 are fixed in the middle of the outer walls of the two cross bars 122, and two square openings are respectively provided on the front sides of the two straight ring blocks 126. Two short rods 127 are respectively fixed on the top surfaces of the two straight ring blocks 126. Four ring frames 128 are fixed on the left and right sides of the two short rods 127 in groups of two, and four sponge blocks 129 are respectively fixed on the inner walls of the four ring frames 128. The inner walls of the two sponge blocks 129 are in sliding contact with the outer walls of the two straight rods 10, and the inner walls of the other two sponge blocks 129 are in sliding contact with the outer walls of the two thin rods 125. The ring frames 128 drive the sponge blocks 129 to move downward, and the sponge blocks 129 wipe the lubricating oil on the straight rod 10 and the thin rod 125 to prevent the straight rod 10 and the thin rod 125 from rusting and aging quickly, so as to avoid the straight rod 10 and the thin rod 125 from aging and rusting when the gas sampling device is used for a long time, resulting in the equipment pushing gas not being smooth.

[0029] Two square rods 131 are fixed to the inner walls of the square openings of the two straight ring blocks 126, two rectangular plates 132 are fixed to the front sides of the two square rods 131, two short columns 133 are passed through and fixed to the front sides of the two rectangular plates 132, two arc-long plates 134 are fixed to the back sides of the two short columns 133, the two arc-long plates 134 are respectively located in front of the two springs 11, the short columns 133 drive the arc-long plates 134 to move downward, and in the process of the arc-long plates 134 moving downward, the arc-long plates 134 block the contracted springs 11 to prevent the contracted springs 11 from clamping the operators when the gas sampling device is delivering gas, causing injuries to the operators.

[0030] Two connecting rods 135 are respectively passed through and fixed on the bottom of the outer walls of the two arc-length plates 134, and two I-shaped blocks 136 are respectively fixed on the sides of the two connecting rods 135 away from each other. Two L-shaped groove plates 137 are fixed on the top surface of the bottom shell 1, and the two L-shaped groove plates 137 are located in front of the two triangular frames 124. The inner walls of the two I-shaped blocks 136 are slidably connected with the inner walls of the two L-shaped groove plates 137. The connecting rods 135 drive the I-shaped blocks 136 to move downward, and the I-shaped blocks 136 slide downward in the L-shaped groove plates 137, so that the arc-length plates 134 remain stable during the downward movement, so as to avoid the arc-length plates 134 shaking during the downward movement when the gas sampling device is delivering gas, causing the equipment to run unsmoothly.

[0031] When the horizontal plate 4 moves downward, the horizontal plate 4 drives the U-shaped block 121 to move downward, the U-shaped block 121 drives the horizontal bar 122 to move downward, the horizontal bar 122 drives the hole block 123 to move downward, and at the same time, the U-shaped frame 2 supports the triangular frame 124, the triangular frame 124 supports the thin rod 125, and the hole block 123 moves downward on the thin rod 125. The hole block 123 contacts the triangular frame 124 during the downward movement, and the triangular frame 124 limits the hole block 123, so that the horizontal plate 4 will not continue to move downward, preventing the horizontal plate 4 from over-squeezing the telescopic bag 7 when the equipment is in use, thereby avoiding the problem that the gas sampling device over-squeezes the telescopic bag 7 when delivering gas, causing the telescopic bag 7 to be easily damaged.

[0032] While the U-shaped block 121 drives the cross bar 122 to move downward, the cross bar 122 drives the straight ring block 126 to move downward, the straight ring block 126 drives the short rod 127 to move downward, the short rod 127 drives the ring frame 128 to move downward, the ring frame 128 drives the sponge block 129 to move downward, and the sponge block 129 wipes the lubricating oil on the straight rod 10 and the thin rod 125 to prevent the straight rod 10 and the thin rod 125 from rusting and aging quickly, thereby preventing the straight rod 10 and the thin rod 125 from aging and rusting when the equipment is in use, thereby avoiding the problem of the straight rod 10 and the thin rod 125 aging and rusting when the gas injection device is used for a long time, causing the equipment to push gas unsmoothly.

[0033] While the cross bar 122 drives the straight ring block 126 to move downward, the straight ring block 126 drives the square rod 131 to move downward, the square rod 131 drives the rectangular plate 132 to move downward, the rectangular plate 132 drives the short column 133 to move downward, and the short column 133 drives the arc-long plate 134 to move downward. During the downward movement of the arc-long plate 134, the arc-long plate 134 blocks the contracted spring 11 to prevent the contracted spring 11 from clamping the operator when the equipment is in use, thereby avoiding the problem of the contracted spring 11 clamping the operator when the gas injection device is delivering gas, causing easy injury to the operator.

[0034] While the short column 133 drives the arc-length plate 134 to move downward, the arc-length plate 134 drives the connecting rod 135 to move downward, and the connecting rod 135 drives the I-shaped block 136 to move downward. The I-shaped block 136 slides downward in the L-shaped groove plate 137, so that the arc-length plate 134 remains stable during the downward movement, preventing the arc-length plate 134 from shaking during the downward movement when the equipment is in use, thereby avoiding the problem of the arc-length plate 134 shaking during the downward movement when the gas injection device is delivering gas, causing the equipment to run unsmoothly.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A gas sampling device for a trace moisture meter, comprising a bottom shell (1), the top surface of the bottom shell (1) is provided with air holes, and U-shaped frames (2) are fixed to the left and right sides of the outer wall of the bottom shell (1), characterized in that: A servo electric cylinder (3) is embedded in the middle of the top surface of the U-shaped frame (2); a horizontal plate (4) is fixed to the bottom surface of the telescopic end of the servo electric cylinder (3); a circular plate (5) is fixed to the bottom surface of the horizontal plate (4); a valve tube (6) is passed through and fixedly installed on the top surface of the circular plate (5); the valve tube (6) is located in front of the servo electric cylinder (3); a telescopic bag (7) is fixed to the bottom surface of the circular plate (5); a bottom surface of the telescopic bag (7) is fixed to a bottom plate (8); an air hole is opened in the middle of the bottom surface of the bottom plate (8); two sliding tubes ( 9), two straight rods (10) are fixed to the top of the interior of the U-shaped frame (2), the bottom surfaces of the two straight rods (10) are fixedly connected to the top surface of the bottom shell (1), the inner walls of the two sliding tubes (9) are slidably connected to the outer walls of the two straight rods (10), two springs (11) are fixed to the bottom surface of the cross plate (4), one end of the two springs (11) away from the cross plate (4) is fixedly connected to the top surface of the bottom shell (1), a moisture meter body (14) is fixedly installed at the top of the interior of the bottom shell (1), and a data cable (15) is fixedly installed on the front of the moisture meter body (14).

2. A gas sampling device for a trace moisture meter according to claim 1, characterized in that: A controller (16) is fixed to one end of the data line (15) away from the moisture meter body (14), a touch screen (17) is fixed to the front of the controller (16), and the touch screen (17) passes through and is fixed to the back of the inner wall of the bottom shell (1).

3. A gas sampling device for a trace moisture meter according to claim 2, characterized in that: The two sliding tubes (9) are located on the left and right sides of the servo electric cylinder (3), a connecting piece is provided at the right end of the valve tube (6), and the two springs (11) are respectively sleeved on the two straight rods (10).

4. A gas sampling device for a trace moisture meter according to claim 3, characterized in that: Limiting devices (12) are provided on the left and right sides of the horizontal plate (4), and the limiting devices (12) are used to limit the position of the telescopic bag (7) when the telescopic bag (7) is pressurizing and delivering gas. The inner wall of the limiting device (12) is provided with an anti-pinching device (13), and the anti-pinching device (13) is used to prevent the spring (11) from pinching the hand when the telescopic bag (7) is pressurizing and delivering gas.

5. A gas sampling device for a trace moisture meter according to claim 4, characterized in that: A U-shaped block (121) is fixed to both left and right sides of the transverse plate (4); two cross bars (122) are fixed to the sides of the two U-shaped blocks (121) away from each other; two hole blocks (123) are fixed to the ends of the two cross bars (122) away from each other; two triangular frames (124) are fixed to the bottom of the inner wall of the U-shaped frame (2); two thin rods (125) are fixed to the top surfaces of the two triangular frames (124); the ends of the two thin rods (125) away from the two triangular frames (124) are fixedly connected to the top of the inner wall of the U-shaped frame (2); the inner walls of the two hole blocks (123) are slidably connected to the outer walls of the two thin rods (125); and the top surfaces of the two triangular frames (124) are located on the movement trajectory of the bottom surfaces of the two hole blocks (123).

6. A gas sampling device for a trace moisture meter according to claim 5, characterized in that: Two straight ring blocks (126) are fixed in the middle of the outer walls of the two cross bars (122), two square openings are respectively provided on the front faces of the two straight ring blocks (126), two short rods (127) are respectively fixed on the top faces of the two straight ring blocks (126), and four ring frames (128) are respectively fixed in pairs on the left and right sides of the two short rods (127).

7. A gas sampling device for a trace moisture meter according to claim 6, characterized in that: Four sponge blocks (129) are fixed to the inner walls of the four ring frames (128), respectively; the inner walls of two of the sponge blocks (129) are in sliding contact with the outer walls of the two straight rods (10), and the inner walls of the other two of the sponge blocks (129) are in sliding contact with the outer walls of the two thin rods (125).

8. A gas sampling device for a trace moisture meter according to claim 7, characterized in that: Two square rods (131) are respectively fixed to the inner walls of the square openings of the two straight ring blocks (126); two rectangular plates (132) are respectively fixed to the front faces of the two square rods (131); two short columns (133) are respectively passed through and fixed to the front faces of the two rectangular plates (132); two arc-shaped plates (134) are respectively fixed to the back faces of the two short columns (133); and the two arc-shaped plates (134) are respectively located directly in front of the two springs (11).

9. A gas sampling device for a trace moisture meter according to claim 8, characterized in that: Two connecting rods (135) are respectively passed through and fixed to the bottom of the outer walls of the two arc-shaped plates (134); and two I-shaped blocks (136) are respectively fixed to the sides of the two connecting rods (135) that are away from each other.

10. A gas sampling device for a trace moisture meter according to claim 9, characterized in that: Two L-shaped groove plates (137) are fixed to the top surface of the bottom shell (1), the two L-shaped groove plates (137) are located in front of the two triangular frames (124), and the inner walls of the two I-shaped blocks (136) are slidably connected to the inner walls of the two L-shaped groove plates (137).

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