Toxic and harmful gas on-line monitoring instrument

Abstract

The utility model relates to a poisonous and harmful gas on-line monitoring instrument which comprises a bearing block and a monitoring instrument body, the monitoring instrument body is inserted into the bearing block and fixedly connected with the bearing block, two adsorption grooves are formed in the side, away from the monitoring instrument body, of the bearing block, piston pieces are connected in the adsorption grooves in a sliding mode, and the piston pieces are connected with the bearing block in a sliding mode. The piston piece and the adsorption groove are arranged in a dynamic sealing mode. The utility model relates to the technical field of harmful gas monitors. When the toxic and harmful gas on-line monitoring instrument is used, the piston rod can be driven by the adsorption piece to do piston motion in the glue injection pipe, so that filling glue is extruded out of the sealing gasket, a gap between the sealing gasket and the monitoring instrument body mounting position is filled with the filling glue, the sealing performance of the inner side of the sealing gasket is guaranteed, and the service life of the monitoring instrument is prolonged. And the phenomenon of air leakage at the mounting position of the monitoring instrument body, which affects the mounting of the bearing block and the monitoring instrument body, is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of harmful gas monitors, and in particular to an on-line monitor for toxic and harmful gases. Background Art

[0002] Toxic and harmful gas monitors are mainly based on sensor technology. By monitoring the concentration of specific gases in the air and converting it into a measurable and displayable signal. Common sensor types include electrochemical sensors, catalytic combustion sensors, infrared sensors, PID (photoionization monitors), etc. Each sensor has unique monitoring advantages and sensitivities for different types of gases. When the monitored gas concentration exceeds the preset safety threshold, the monitor will immediately give an audible and visual alarm to remind the on-site personnel to take emergency measures to avoid accidents.

[0003] In the prior art, the one disclosed in CN211344581 U includes a gas monitor, which is connected with a fixing mechanism. The fixing mechanism includes a fixing plate, two adsorption grooves, two threaded sleeves, two threaded rods and two pistons. The fixing plate is fixedly connected to one side of the gas monitor. Two adsorption grooves with a rounded rectangular cross-section are symmetrically opened on the side wall of the fixing plate away from the gas monitor. Two threaded sleeves with one end open are respectively rotatably connected to the bottom of the corresponding adsorption groove through bearings. The bearings are fixedly arranged at the bottom of the adsorption groove. The threaded sleeve passes through the inner ring of the bearing and extends outwards, and the end of the threaded sleeve close to the adsorption groove is an open end. The utility model can adsorb the gas monitor on a plane, which is convenient for the gas monitor to monitor the change of gas content for a long time. The operation is simple, the carrying bracket is omitted, and it is more convenient.

[0004] This application mainly uses the negative pressure adsorption method to replace the carrying bracket, improving the convenience. However, in some cases, the position to be monitored will have small depressions, so it is easy to cause air leakage when the adsorption groove adsorbs, thus affecting the progress of gas monitoring work. Summary of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide an on-line monitor for toxic and harmful gases, so as to solve the technical problems mentioned in the above background art.

[0006] The above technical purpose of the utility model is achieved through the following technical solutions:

[0007] An on-line monitoring instrument for toxic and harmful gases, comprising a bearing block and a monitor body. The monitor body is inserted into the bearing block and fixedly connected to the bearing block. On one side of the bearing block away from the monitor body, two adsorption grooves are provided. A piston sheet is slidably connected in the adsorption groove, and the piston sheet is in dynamic sealing with the adsorption groove. A sealing gasket is fixedly connected to the side of the opening of the adsorption groove. A filling member is arranged in the bearing block at the position of the sealing gasket. An adsorbent is arranged on the end side wall of the adsorption groove;

[0008] The filling member includes a positioning ring, a glue injection tube, and a piston rod. The positioning ring is fixedly installed in the bearing block at the position of the sealing gasket. The positioning ring is attached to the sealing gasket. A groove is provided on the side of the positioning ring close to the sealing gasket. A number of filling holes are provided on the side of the sealing gasket close to the positioning ring. The number of glue injection tubes is two, and they are respectively arranged on the upper and lower sides of the adsorption groove. The glue injection tubes are U-shaped. One end of the glue injection tube is connected to the positioning ring and communicated with the groove. The other end of the glue injection tube is communicated with the adsorption groove through the end side wall of the adsorption groove. The number of piston rods corresponds to the number of glue injection tubes. The piston rods are fixedly installed on the side of the piston sheet away from the sealing gasket. The end of the piston rod is inserted into the corresponding glue injection tube, and the piston rod is in sliding connection with the glue injection tube and is in dynamic sealing;

[0009] In a preferred example of the present utility model, it can be further configured that: piston blocks are arranged in the glue injection tubes. The number of piston blocks is two, and the piston blocks are slidably installed at one end of the corresponding glue injection tubes close to the positioning ring. The piston blocks are in dynamic sealing with the glue injection tubes. A glue filling part is also arranged on the side of the glue injection tubes.

[0010] In a preferred example of the present utility model, it can be further configured that: the glue filling part includes two cavities. The two cavities are respectively opened on the bearing block at the side of the corresponding glue injection tube. Core rods are threadedly connected to the openings of the two cavities. The core rods are in dynamic sealing with the cavities. The cavities are communicated with the positions between the piston blocks and the positioning rings in the glue injection tubes.

[0011] In a preferred example of the present utility model, it can be further configured that: both the sealing gasket and the positioning ring are made of rubber or silica gel materials.

[0012] In a preferred example of the present utility model, it can be further configured that: the adsorbent includes a docking groove. A threaded cover is rotatably connected in the docking groove. A pull rod is threadedly connected in the threaded cover. The end of the pull rod is fixedly connected to the piston sheet.

[0013] In a preferred example, the present utility model can be further configured as follows: the pull rod is hollow, and air holes are provided on the outer peripheral side of one end of the pull rod close to the piston piece. The air holes communicate with the threaded cover, and discharge holes are provided at the end of the threaded cover.

[0014] In summary, the present utility model includes at least one of the following beneficial technical effects:

[0015] 1. When in use, the online monitoring instrument for toxic and harmful gases can drive the piston rod to perform a piston movement in the injection tube through the suction accessory, so as to extrude the filling glue from the sealing gasket, so that the gap at the installation position of the monitoring instrument body and the sealing gasket is filled with the filling glue, thereby ensuring the sealing performance inside the sealing gasket and avoiding air leakage at the installation position of the monitoring instrument body, which may affect the installation of the bearing block and the monitoring instrument body.

[0016] 2. When the piston rod performs a piston movement, the piston block provided in the online monitoring instrument for toxic and harmful gases will drive the piston block to perform a piston movement in the injection tube, and then drive the filling glue to be injected into the groove and the filling hole through the piston movement of the piston block. Subsequently, the gap at the installation position of the monitoring instrument body is filled, avoiding air bubbles in the filling glue caused by the push of the air flow, which may affect the output of the filling glue. The glue filling part provided is used to inject a fixed amount of filling glue into the injection tube.

[0017] 3. The glue filling part of the online monitoring instrument for toxic and harmful gases includes two cavities, and the two cavities are respectively opened on the side of the bearing block corresponding to the injection tube. Core rods are threadedly connected to the openings of the two cavities, and the core rods are in a dynamic sealing setting with the cavities. The cavities communicate with the position between the piston block and the positioning ring in the injection tube.

[0018] 4. The sealing gasket and the positioning ring provided in the online monitoring instrument for toxic and harmful gases are made of rubber or silica gel materials, which can squeeze the bearing block towards the installation position of the monitoring instrument body, so that the gap can be accurately filled when the filling glue is output, and the positioning ring can better fit with the sealing gasket to improve the sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 It is a schematic diagram of the overall structure of an online monitoring instrument for toxic and harmful gases of the present utility model.

[0021] Figure 2 This is a schematic cross-sectional view of an on-line monitoring instrument for toxic and harmful gases of the present utility model.

[0022] Figure 3 For the present utility model Figure 2 The front structure schematic diagram.

[0023] In the figure, 1 is a bearing block; 2 is a monitor body; 3 is an adsorption groove; 4 is a piston sheet; 5 is a sealing gasket; 6 is a filling member; 7 is an adsorbent; 8 is a positioning ring; 9 is a glue injection tube; 10 is a piston rod; 11 is a groove; 12 is a filling hole; 13 is a piston block; 14 is a glue filling part; 15 is a cavity; 16 is a core rod; 17 is a docking groove; 18 is a threaded cover; 19 is a pull rod; 20 is an air hole; 21 is a drain hole. Detailed implementation manners

[0024] The present utility model will be further described in detail below with reference to the accompanying drawings.

[0025] Embodiment:

[0026] Referring to Figures 1 - 3 , an on-line monitoring instrument for toxic and harmful gases disclosed by the present utility model includes a bearing block 1 and a monitor body 2. The monitor body 2 is inserted into the bearing block 1 and fixedly connected to the bearing block 1. Two adsorption grooves 3 are formed on one side of the bearing block 1 away from the monitor body 2. A piston sheet 4 is slidably connected in the adsorption groove 3, and the piston sheet 4 is in dynamic sealing with the adsorption groove 3. A sealing gasket 5 is fixedly connected to the side of the opening of the adsorption groove 3. A filling member 6 is arranged in the bearing block 1 at the position of the sealing gasket 5. An adsorbent 7 is arranged on the end side wall of the adsorption groove 3;

[0027] The filling member 6 includes a positioning ring 8, a glue injection tube 9, and a piston rod 10. The positioning ring 8 is fixedly installed in the bearing block 1 at the position of the sealing gasket 5. The positioning ring 8 is in contact with the sealing gasket 5. A groove 11 is formed on the side of the positioning ring 8 close to the sealing gasket 5. A number of filling holes 12 are formed on the side of the sealing gasket 5 close to the positioning ring 8. The number of the glue injection tubes 9 is two, and they are respectively arranged on the upper and lower sides of the adsorption groove 3. The glue injection tube 9 is U-shaped. One end of the glue injection tube 9 is connected to the positioning ring 8 and communicated with the groove 11. The other end of the glue injection tube 9 is communicated with the adsorption groove 3 through the end side wall of the adsorption groove 3. The number of the piston rods 10 corresponds to the number of the glue injection tubes 9. The piston rod 10 is fixedly installed on the side of the piston sheet 4 away from the sealing gasket 5. The end of the piston rod 10 is inserted into the corresponding glue injection tube 9, and the piston rod 10 is in sliding connection with the glue injection tube 9 and is in dynamic sealing.

[0028] In this embodiment, when in use, hold the bearing block 1 and press the sealing gasket 5 against the position where it needs to be installed. Then, drive the piston piece 4 to perform a piston motion in the adsorption groove 3 through the adsorbent 7. At the same time, the piston piece 4 will also drive the two piston rods 10 to perform a piston motion in the glue injection tube 9. The glue injection tube 9 needs to be filled with filling glue. When the piston rods 10 perform a piston motion, the glue will be injected into the groove 11 of the positioning ring 8. The glue injection tube 9 and the positioning ring 8 are connected through a one-way valve. Then, with the piston motion of the piston piece 4, the piston rods 10 will be continuously driven to perform a piston motion in the glue injection tube 9, and the filling glue will be continuously injected into the groove 11. Then, the filling glue will be injected from the groove 11 to several filling holes 12 and discharged from the filling holes 12 to fill the gap at the contact position of the sealing gasket 5, thereby avoiding air leakage from the gap during the installation of the monitor body 2 by the negative pressure adsorption method, affecting the installation of the monitor body 2, and ensuring the airtightness inside the sealing gasket 5 when installing at a position with a gap.

[0029] It should be noted that the filling glue used is a joint sealant, which can quickly fill the gap to ensure airtightness and can also cooperate with the negative pressure adsorption method to stick the sealing gasket 5 to the installation position of the monitor body 2, improving the stability after installation.

[0030] In a further preferred embodiment of the present utility model, as Figures 1 - 3 shown, a piston block 13 is provided in the glue injection tube 9. The number of the piston blocks 13 is two, and the piston blocks 13 are slidably installed at one end of the corresponding glue injection tube 9 close to the positioning ring 8. The piston blocks 13 and the glue injection tube 9 are provided with a dynamic seal. A glue filling part 14 is also provided on the side of the glue injection tube 9.

[0031] In this embodiment, when the piston rods 10 perform a piston motion, the provided piston blocks 13 will drive the piston blocks 13 to perform a piston motion in the glue injection tube 9, and then drive the filling glue to be injected into the groove 11 and the filling holes 12 through the piston motion of the piston blocks 13, and then fill the gap at the installation position of the monitor body 2, avoiding air bubbles in the filling glue caused by the push of air flow, affecting the output of the filling glue. The provided glue filling part 14 is used to inject a fixed amount of filling glue into the glue injection tube 9.

[0032] In a further preferred embodiment of the present utility model, as Figures 1 - 3 shown, the glue filling part 14 includes two cavities 15. The two cavities 15 are respectively opened on the bearing block 1 on the side of the corresponding glue injection tube 9. The openings of the two cavities 15 are threadedly connected with core rods 16. The core rods 16 and the cavities 15 are provided with a dynamic seal. The cavities 15 are communicated with the position between the piston block 13 and the positioning ring 8 in the glue injection tube 9.

[0033] In this embodiment, first, the core rod 16 is rotated and taken out, a certain amount of filling glue is injected into the cavity groove 15, and then the core rod 16 is installed into the cavity groove 15, so that the filling glue is completely pushed to the connection between the cavity groove 15 and the glue injection tube 9. The connection between the cavity groove 15 and the glue injection tube 9 is connected through a one-way valve. When the piston block 13 moves in the piston direction towards the piston rod 10, negative pressure is generated, and the filling glue in the cavity groove 15 is sucked into the glue injection tube 9, so as to conveniently and quickly inject the filling glue into the glue injection tube 9 to facilitate filling the gap at the installation position of the filling monitor body 2.

[0034] In a further preferred embodiment of the present utility model, as Figures 1 - 3 shown, both the sealing gasket 5 and the positioning ring 8 are made of rubber or silica gel.

[0035] In this embodiment, the provided sealing gasket and the positioning ring 8 are made of rubber or silica gel, and the bearing block 1 can be squeezed towards the installation position of the monitor body 2, so that the gap can be accurately filled when the filling glue is output, and the positioning ring 8 can better fit with the sealing gasket 5 to improve the sealing performance.

[0036] In a further preferred embodiment of the present utility model, as Figures 1 - 3 shown, the adsorbing member 7 includes a docking groove 17, a threaded cover 18 is rotatably connected in the docking groove 17, a pull rod 19 is threadedly connected in the threaded cover 18, and the end of the pull rod 19 is fixedly connected to the piston piece 4.

[0037] In this embodiment, when the threaded cover 18 is rotated, the threaded cover 18 drives the pull rod 19 to move, and then the movement of the pull rod 19 drives the piston piece 4 to perform a piston movement in the adsorption groove 3, so that the adsorption groove 3 can perform negative pressure adsorption at the installation position of the monitor body 2, achieving the effect of installing the monitor body 2.

[0038] In a further preferred embodiment of the present utility model, as Figures 1 - 3 shown, the pull rod 19 is hollow, air holes 20 are formed on the outer peripheral side of one end of the pull rod 19 close to the piston piece 4, the air holes 20 are communicated with the threaded cover 18, and discharge holes 21 are formed at the end of the threaded cover 18.

[0039] In this embodiment, when the pull rod 19 drives the piston piece 4 to move, the provided air holes 20 are used to discharge the redundant gas in the adsorption groove 3, so that the redundant gas is discharged from the discharge holes 21, avoiding the piston piece 4 being squeezed and deformed due to excessive air pressure in the adsorption groove 3, which affects the piston movement of the piston piece 4.

[0040] The embodiments of this specific implementation manner are all preferred embodiments of the present utility model, and do not limit the protection scope of the present utility model accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present utility model shall be covered within the protection scope of the present utility model.

Claims

1. An on-line monitoring instrument for toxic and harmful gases, comprising a bearing block (1) and a monitor body (2), wherein the monitor body (2) is inserted into the bearing block (1) and fixedly connected to the bearing block (1), characterized in that, On one side of the bearing block (1) away from the monitor body (2), two adsorption grooves (3) are provided. A piston piece (4) is slidably connected in the adsorption groove (3), and the piston piece (4) is in dynamic sealing connection with the adsorption groove (3). A sealing gasket (5) is fixedly connected to the side of the opening of the adsorption groove (3). A filling piece (6) is arranged in the bearing block (1) at the position of the sealing gasket (5). An adsorbent (7) is arranged on the end side wall of the adsorption groove (3). The filling piece (6) includes a positioning ring (8), a glue injection tube (9), and a piston rod (10). The positioning ring (8) is fixedly installed in the bearing block (1) at the position of the sealing gasket (5). The positioning ring (8) is in contact with the sealing gasket (5). A groove (11) is opened on one side of the positioning ring (8) close to the sealing gasket (5). A number of filling holes (12) are opened on one side of the sealing gasket (5) close to the positioning ring (8). The number of glue injection tubes (9) is two, and they are respectively arranged on the upper and lower sides of the adsorption groove (3). The glue injection tube (9) is U-shaped. One end of the glue injection tube (9) is connected to the positioning ring (8) and communicated with the groove (11). The other end of the glue injection tube (9) is communicated with the adsorption groove (3) through the end side wall of the adsorption groove (3). The number of piston rods (10) corresponds to the number of glue injection tubes (9). The piston rod (10) is fixedly installed on the side of the piston piece (4) away from the sealing gasket (5). The end of the piston rod (10) is inserted into the corresponding glue injection tube (9), and the piston rod (10) is in sliding connection with the glue injection tube (9) and is in dynamic sealing connection.

2. The on-line monitoring instrument for toxic and harmful gases according to claim 1, characterized in that, A piston block (13) is arranged in the glue injection tube (9). The number of piston blocks (13) is two, and the piston blocks (13) are slidably installed at one end of the corresponding glue injection tube (9) close to the positioning ring (8). The piston block (13) is in dynamic sealing connection with the glue injection tube (9). A glue filling part (14) is also arranged on the side of the glue injection tube (9).

3. An on-line monitoring instrument for toxic and harmful gases according to claim 2, characterized in that, The glue filling part (14) includes two cavities (15). The two cavities (15) are respectively opened on the bearing block (1) on the side of the corresponding glue injection tube (9). Core rods (16) are threadedly connected to the openings of the two cavities (15). The core rods (16) are in dynamic sealing connection with the cavities (15). The cavities (15) are communicated with the position between the piston block (13) and the positioning ring (8) in the glue injection tube (9).

4. An on-line monitoring instrument for toxic and harmful gases according to claim 1, characterized in that, Both the sealing gasket (5) and the positioning ring (8) are made of rubber or silica gel.

5. An on-line monitoring instrument for toxic and harmful gases according to claim 1, characterized in that, The adsorbent (7) includes a docking groove (17). A threaded cover (18) is rotatably connected in the docking groove (17). A pull rod (19) is threadedly connected in the threaded cover (18). The end of the pull rod (19) is fixedly connected to the piston piece (4).

6. The on-line monitoring instrument for toxic and harmful gases according to claim 5, characterized in that, The pull rod (19) is hollow, and air holes (20) are formed on the outer peripheral side of one end of the pull rod (19) close to the piston piece (4). The air holes (20) are communicated with the threaded cover (18), and discharge holes (21) are formed at the end of the threaded cover (18).

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