Stationary liquid detecting and sampling device

Abstract

The invention belongs to the technical field of liquid detection devices, and provides a stationary liquid detection sampling device which comprises a sampling box and a controller arranged on the sampling box, and a stationary liquid bottle and a sampling bottle are arranged on the two sides of the sampling box respectively; the sampling cavity is formed in the sampling box and is used for storing stationary liquid; the weighing devices are respectively arranged on one side of the sampling box and are used for monitoring the weights of the stationary liquid bottle and the sampling bottle; the sealing covers are respectively mounted on the stationary liquid bottle and the sampling bottle in a threaded manner; liquid level monitoring modules for detecting the liquid level heights in the stationary liquid bottle and the sampling bottle are arranged on the sealing covers; and the gas purification mechanism is arranged on the sampling box and is used for adsorbing and purifying volatile gas discharged from the sampling bottle. According to the stationary liquid detecting and sampling device provided by the scheme, through weighing, liquid level monitoring and accurate quantity control, and efficient adsorption of volatile gas by the gas purification mechanism, accurate sampling and safe operation can be guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular relates to a fixed liquid detection sampling device. Background Art

[0002] Fixatives are typically mixed from multiple different stock solutions in specific proportions and process requirements. The stability of their quality and performance has a direct and significant impact on subsequent experimental results, product quality, or test accuracy. Currently, after the multiple stock solutions are mixed to form a fixative, the conventional operation is to pour the prepared fixative into a transparent container for storage.

[0003] However, this storage method has many drawbacks in practical applications. For one thing, it is difficult to accurately and in real time monitor the amount of liquid in the fixative and sampling bottles during the subsequent sampling process. Due to the lack of effective monitoring methods, it is difficult to accurately grasp the actual amount of liquid in the bottles. This can lead to excessive storage of liquid in the sampling bottles. If overflow occurs, it will not only waste the fixative and increase production costs, but also pollute the surrounding environment, and even affect the accuracy of subsequent sampling results, disrupting the normal progress of experiments or production processes. Summary of the Invention

[0004] The present invention provides a fixing liquid detection sampling device, which aims to solve the problem raised in the above background technology that when the fixing liquid is poured into a transparent container for storage, it is easy to spill and overflow due to the lack of accurate measurement means, causing resource waste, environmental pollution and safety hazards.

[0005] To solve the above problems, the present invention is implemented as follows: a fixative liquid detection sampling device, comprising: a sampling box and a controller arranged on the sampling box, a fixative liquid bottle and a sampling bottle are respectively provided on both sides of the sampling box; a sampling cavity is opened in the sampling box for storing the fixative liquid; weighing devices are respectively provided on one side of the sampling box for monitoring the weight of the fixative liquid bottle and the sampling bottle; sealing covers are respectively threadedly installed on the fixative liquid bottle and the sampling bottle, and a liquid level monitoring module is provided on the sealing cover for detecting the liquid level height in the fixative liquid bottle and the sampling bottle; a gas purification mechanism is provided on the sampling box for adsorbing and purifying volatile gases discharged from the sampling bottle.

[0006] Preferably, several fixed tubes are installed on the sampling box, and several of the fixed tubes extend into the sampling cavity. Three-way valves are installed on the other ends of the fixed tubes. The three-way valve is detachably provided with a connecting tube, and several of the connecting tubes are respectively connected to the pipe mounting parts on the sealing cover. A flow meter is installed on the fixed tube connected to the fixed liquid bottle, and several pump bodies are installed in the sampling cavity, and several of the pump bodies are respectively connected to the fixed tubes.

[0007] Preferably, the gas purification mechanism includes: a placement groove opened on one side of the sampling box; a serpentine tube arranged in the placement groove, in which activated carbon for adsorbing volatile gases is placed; tube covers respectively threadedly installed at both ends of the serpentine tube; and a gas diffusion tube installed on any one of the tube covers and connected to the sampling bottle.

[0008] Preferably, a bracket is fixedly installed in the serpentine tube, a connecting rod is slidably sleeved on the bracket, a connecting spring is sleeved on the connecting rod, and a sealing plate is provided on the other tube cover, the sealing plate is adapted to the exhaust port of the tube cover, and the sealing plate is fixedly connected to the top of the connecting rod and the connecting spring.

[0009] Preferably, a connecting seat is fixedly installed in the placement groove, a connecting block is fixedly installed on one side of the serpentine tube, the connecting block is placed in the connecting seat, a connecting spring is fixedly installed on the top of the inner wall of the connecting seat, and a pressure plate for limiting the connecting block is fixedly installed on the bottom end of the connecting spring, and the pressure plate is in close contact with the top of the connecting block.

[0010] Preferably, an annular baffle is fixedly installed in the serpentine tube, and a partition net is placed on the annular baffle. The partition net is located below the bracket and is used to separate the activated carbon.

[0011] Preferably, a storage slot for storing the weighing device is opened on one side of the sampling box, and metal clips are installed on one side of the storage slot and the weighing device, and multiple metal clips are connected to each other.

[0012] Preferably, the sampling box is provided with a feeding mechanism for adding raw liquid to the fixed liquid, and the feeding mechanism includes: a liquid storage chamber provided in the sampling box; a one-way screw rotatably installed in the liquid storage chamber; a push plate threadedly sleeved on the one-way screw for discharging the raw liquid in the liquid storage chamber into the sampling chamber; and a drainage channel opened at the bottom of the liquid storage chamber and connected to the sampling chamber.

[0013] Preferably, a plurality of silicone baffles are installed in the drainage channel, and the plurality of silicone baffles are used to seal the drainage channel. A liquid inlet hopper for adding raw liquid into the liquid storage cavity is installed on one side of the sampling box.

[0014] Preferably, the sampling box is provided with two glass observation windows for observing the liquid levels in the sampling cavity and the liquid storage cavity.

[0015] Compared with related technologies, the stationary liquid detection sampling device provided by the present invention has the following beneficial effects: Compared with the existing technology, the fixed liquid detection sampling device provided by this solution monitors the weight of the fixed liquid bottle and the sampling bottle respectively through a weighing device arranged on one side of the sampling box, and uses a liquid level monitoring module threadedly installed on the sealing cover to detect the liquid level in the two bottles, thereby realizing dual real-time detection of the liquid in the fixed liquid bottle and the sampling bottle. This monitoring method can more accurately grasp the amount of liquid in the bottle, effectively prevent excessive storage of liquid in the sampling bottle, avoid waste, pollution or impact on sampling results caused by liquid overflow, and improve the accuracy and reliability of the sampling process. The volatile gas discharged from the sampling bottle can be adsorbed and purified through the gas purification mechanism, effectively reducing the emission of harmful gases, improving the operating environment, and ensuring the health and safety of the operator.

[0016] In summary, the fixed liquid detection sampling device of the present invention can ensure accurate sampling and safe operation through precise quantity control through weighing and liquid level monitoring, and the gas purification mechanism efficiently adsorbs volatile gases. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the main structure of a stationary liquid detection sampling device provided by the present invention; Figure 2 1 is a schematic diagram of the rear structure of the sampling box provided by the present invention; Figure 3 This is a schematic diagram of the main cross-sectional structure of part of the sampling box provided by the present invention; Figure 4 It is a side cross-sectional structural schematic diagram of the gas purification mechanism provided by the present invention; Figure 5 This is an assembly diagram of the connecting seat and the connecting block provided by the present invention; Figure 6 This is an assembly diagram of the ring gear and two connecting gears provided by the present invention; Figure 7 1 is a schematic top view and cross-sectional view of the first conical differential wheel and the displacement mechanism provided by the present invention; Figure 8 It is an assembly diagram of the overpressure alarm mechanism provided by the present invention; Figure 9 for Figure 3 Schematic diagram of the enlarged structure of part A shown in FIG; Figure 10 for Figure 3 Schematic diagram of the enlarged structure of part B shown in FIG; Figure 11 for Figure 3 Schematic diagram of the enlarged structure of part C shown in ; Figure 12 for Figure 7 Schematic diagram of the enlarged structure of part D shown in FIG.

[0018] Reference numerals: 1, sampling box; 2, controller; 3, sampling chamber; 4, weighing device; 5, fixing liquid bottle; 6, sampling bottle; 7, sealing cover; 8, liquid level monitoring module; 9, three-way valve; 10, flow meter; 11, connecting pipe; 12, pump body; 13, placement tank; 14, serpentine pipe; 15, pipe cover; 16, diffuser pipe; 17, bracket; 18, connecting rod; 19, connecting spring; 20, sealing plate; 21, connecting seat; 22, Connecting block; 23. Connecting spring; 24. Pressing plate; 25. Screen; 26. Storage tank; 27. Metal clip; 28. Liquid storage chamber; 29. One-way screw; 30. Push plate; 31. Liquid discharge channel; 32. Mounting box; 33. First switch device; 34. Contact rod; 35. Alarm; 36. Partition; 37. Circular plate; 38. Stirring rod; 39. Ring gear; 40. Connecting gear; 41. Motor; 42. Bevel gear; 43. Support plate; 44, telescopic rod; 45, first conical differential; 46, linkage rod; 47, second conical differential; 48, connecting gear; 49, rack; 50, rotating rod; 51, driving gear; 52, wire rope; 53, first electric push rod; 54, connecting tube; 55, torsion spring; 56, guide rod; 57, guide block; 58, liquid level sensor; 59, air pressure sensor; 60, inert gas storage tank; 61, pipeline connection Parts; 62. Exhaust pipe; 63. Pressure relief chamber; 64. Connecting pipe; 65. Annular plate; 66. Conical plate; 67. Sealing ring; 68. Limit rod; 69. Fixing cylinder; 70. Bent rod; 71. Second switch device; 72. Fixing frame; 73. Fixing spring; 74. Limiting clip; 75. Elastic steel plate; 76. Threaded rod; 77. Mounting block; 78. Insert rod; 79. Connecting rod; 80. Differential gear; 81. Second electric push rod. DETAILED DESCRIPTION

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein in the specification of the application are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the description of the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order; the terms "inside", "outside", "left", and "right" indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention.

[0020] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] The embodiment of the present invention provides a fixed liquid detection sampling device, such as Figure 1-12 As shown, the fixative liquid detection sampling device includes: a sampling box 1 and a controller 2 arranged on the sampling box 1, a fixative liquid bottle 5 and a sampling bottle 6 are respectively provided on both sides of the sampling box 1; a sampling cavity 3 is opened in the sampling box 1 for storing the fixative liquid; a weighing device 4 is respectively provided on one side of the sampling box 1 for monitoring the weight of the fixative liquid bottle 5 and the sampling bottle 6; a sealing cover 7 is respectively threadedly installed on the fixative liquid bottle 5 and the sampling bottle 6, and a liquid level monitoring module 8 is provided on the sealing cover 7 for detecting the liquid level height in the fixative liquid bottle 5 and the sampling bottle 6; a gas purification mechanism is provided on the sampling box 1 for adsorbing and purifying the volatile gas discharged from the sampling bottle 6.

[0022] In this embodiment, during the sampling process, the weighing device 4 provided on one side of the sampling box 1 is used to monitor the weights of the fixing liquid bottle 5 and the sampling bottle 6 respectively. At the same time, the liquid level monitoring module 8 threadedly installed on the sealing cover 7 on the fixing liquid bottle 5 and the sampling bottle 6 detects the liquid level heights in the two bottles, thereby realizing real-time detection of the liquid in the fixing liquid bottle 5 and the sampling bottle 6, and preventing excessive storage of liquid in the sampling bottle 6. Since the sampling bottle 6 is sealed to store samples, when the fixing liquid is discharged into the sampling bottle 6, the gas in the bottle is discharged through the exhaust end on the sealing cover 7. The volatile gases such as methanol and ethanol in the fixing liquid are relatively pungent. At this time, the gas purification mechanism provided on the sampling box 1 will adsorb and purify the volatile gases discharged from the sampling bottle 6. By respectively monitoring the weight of the fixing liquid bottle 5 and the sampling bottle 6 through the weighing device 4 arranged on one side of the sampling box 1, and detecting the liquid level height in the two bottles by using the liquid level monitoring module 8 threadedly mounted on the sealing cover 7, dual real-time detection of the liquid in the fixing liquid bottle 5 and the sampling bottle 6 is achieved. This monitoring method can more accurately grasp the amount of liquid in the bottle, effectively prevent excessive storage of liquid in the sampling bottle 6, avoid waste, pollution or influence on sampling results caused by liquid overflow, and improve the accuracy and reliability of the sampling process.

[0023] In a further preferred embodiment of the present invention, a plurality of fixed tubes are installed on the sampling box 1, and the plurality of fixed tubes extend into the sampling cavity 3. A three-way valve 9 is installed at the other end of the plurality of fixed tubes. The three-way valve 9 is detachably provided with a connecting tube 11, and the plurality of connecting tubes 11 are respectively connected to the pipe mounting parts on the sealing cover 7. A flow meter 10 is installed on the fixed tube connected to the fixed liquid bottle 5, and a plurality of pump bodies 12 are installed in the sampling cavity 3, and the plurality of pump bodies 12 are respectively connected to the plurality of fixed tubes.

[0024] In this embodiment, when sampling is performed, the pump body 12 is started. Since it is a quantitative pump, it can quantitatively extract the liquid in the fixative bottle 5. The liquid enters the sampling chamber 3 through the fixed tube connected to the fixative bottle 5. At the same time, the flow meter 10 monitors the flow of the extracted liquid. After that, the liquid enters the sampling bottle 6 through other fixed tubes, the three-way valve 9 and the connecting tube 11. The setting of the three-way valve 9 facilitates the connection of multiple fixative bottles 5. During the sampling process, after sampling of one fixative bottle 5 is completed, the three-way valve 9 can be operated to switch to other fixative bottles 5 for connection, thereby achieving non-stop sampling. The use of a quantitative pump by the pump body 12 can quantitatively extract or discharge a certain amount of liquid. In conjunction with the flow meter 10 to monitor the flow of the extracted liquid, the sampling volume can be accurately controlled, the accuracy and reliability of sampling can be improved, and the requirements for the amount of fixative used in different experiments or tests can be met.

[0025] In a further preferred embodiment of the present invention, the gas purification mechanism includes: a placement groove 13 opened on one side of the sampling box 1; a serpentine tube 14 arranged in the placement groove 13, and activated carbon for adsorbing volatile gases is placed in the serpentine tube 14; tube covers 15 respectively threadedly installed at both ends of the serpentine tube 14; and a gas diffusion tube 16 installed on any one of the tube covers 15 and connected to the sampling bottle 6.

[0026] In this embodiment, when the stationary liquid is discharged into the sampling bottle 6, the volatile gases volatilized from the sampling bottle 6 are discharged into the serpentine tube 14 through the gas diffusion tube 16. Because the serpentine tube 14 contains activated carbon, the volatile gases are adsorbed by the activated carbon during their flow within the serpentine tube 14, thereby reducing the emission of pungent odors. By providing the serpentine tube 14 and placing the activated carbon therein, the adsorption properties of the activated carbon can be utilized to effectively purify the volatile gases discharged from the sampling bottle 6, greatly reducing the emission of pungent odors, improving the working environment, and reducing hazards to the health of operators. When the activated carbon is saturated with adsorption, the operator can easily remove the old activated carbon and replace it with a new one, ensuring the continued effective operation of the gas purification mechanism.

[0027] In a further preferred embodiment of the present invention, a bracket 17 is fixedly installed in the serpentine tube 14, a connecting rod 18 is slidably sleeved on the bracket 17, a connecting spring 19 is sleeved on the connecting rod 18, and a sealing plate 20 is provided on the other pipe cover 15, the sealing plate 20 is adapted to the exhaust port of the pipe cover 15, and the sealing plate 20 is fixedly connected to the top of the connecting rod 18 and the connecting spring 19.

[0028] In this embodiment, when the gas is discharged into the serpentine tube 14, the air pressure inside the serpentine tube 14 changes. During the gas discharge stage, the air pressure will push the sealing plate 20 upward. At this time, the connecting spring 19 is stretched, and the gas is discharged through the exhaust port of the tube cover 15. When the serpentine tube 14 is not exhausted, the sealing plate 20 will move downward under the elastic restoring force of the connecting spring 19 to seal the exhaust port of the tube cover 15, which is beneficial to extend the service life of the activated carbon, reduce the frequency of replacing the activated carbon, and save costs.

[0029] In a further preferred embodiment of the present invention, a connecting seat 21 is fixedly installed in the placement groove 13, a connecting block 22 is fixedly installed on one side of the serpentine tube 14, the connecting block 22 is placed in the connecting seat 21, and a connecting spring 23 is fixedly installed on the top of the inner wall of the connecting seat 21, and a pressure plate 24 for limiting the connecting block 22 is fixedly installed on the bottom end of the connecting spring 23, and the pressure plate 24 is in close contact with the top of the connecting block 22.

[0030] In this embodiment, when the serpentine tube 14 is installed in the placement groove 13, the connecting block 22 is inserted from the side opening of the connecting seat 21. Since the bottom of the opening is provided with a slope, the connecting block 22 will not move out smoothly after being inserted, and it plays a certain limiting role. Afterwards, under the elastic action of the connecting spring 23, the pressure plate 24 will press the connecting block 22 downward, further fixing the position of the connecting block 22, thereby improving the stability of the serpentine tube 14. Through the inclined design of the bottom of the opening of the connecting seat 21 and the pressing of the connecting block 22 by the pressure plate 24, the serpentine tube 14 is fixed from multiple aspects, which greatly improves the stability of the serpentine tube 14 in the placement groove 13.

[0031] In a further preferred embodiment of the present invention, an annular baffle is fixedly installed in the serpentine tube 14, and a partition 25 is placed on the annular baffle. The partition 25 is located below the bracket 17 and is used to separate the activated carbon.

[0032] In this embodiment, when the gas is discharged into the serpentine tube 14, the volatile gas passes through the partition 25 and contacts the activated carbon therein. The activated carbon adsorbs and purifies the volatile gas. The partition 25 separates the activated carbon, allowing the gas to pass through the activated carbon layer evenly, ensuring that the activated carbon fully adsorbs the volatile gas.

[0033] In a further preferred embodiment of the present invention, a storage slot 26 for storing the weighing device 4 is provided on one side of the sampling box 1, and metal clips 27 are installed on one side of the storage slot 26 and the weighing device 4, and multiple metal clips 27 are connected to each other.

[0034] In this embodiment, after the sampling box 1 is used up, the weighing device 4 is placed in the storage slot 26, and the metal clip 27 on the storage slot 26 is engaged with the metal clip 27 on the weighing device 4, so as to fix the weighing device 4. By setting the storage slot 26, the weighing device 4 can be placed in the storage slot 26 after the sampling box 1 is used up, realizing the centralized storage of the weighing device 4, avoiding the weighing device 4 from being lost or damaged due to being placed randomly, and also making the sampling box 1 as a whole more neat and orderly. In a further preferred embodiment of the present invention, a feeding mechanism for adding raw liquid to the fixed liquid is provided in the sampling box 1, and the feeding mechanism includes: a liquid storage chamber 28 provided in the sampling box 1; a one-way screw 29 rotatably installed in the liquid storage chamber 28; a push plate 30 threadedly sleeved on the one-way screw 29 for discharging the raw liquid in the liquid storage chamber 28 into the sampling chamber 3; and a drainage channel 31 opened at the bottom of the liquid storage chamber 28 and connected to the sampling chamber 3.

[0035] In this embodiment, since the stationary liquid is a mixture of a specific ratio, when some solution evaporates from the stationary liquid, only a certain volatile component (such as an organic solvent) is lost. In this case, the original liquid must be replenished to maintain the ratio. In actual operation, the specific component that evaporates is first determined by weight loss or gas chromatography (GC) analysis, and then the corresponding original liquid is poured into the liquid storage chamber 28. When it is necessary to extract the fixative into the sampling chamber 3, the one-way screw 29 rotates. Since the push plate 30 is threadedly connected to the one-way screw 29, the push plate 30 will move along the one-way screw 29 to squeeze the original liquid in the liquid storage chamber 28, so that the original liquid is discharged into the sampling chamber 3 through the discharge channel 31 and mixed with the fixative to achieve the replenishment of the original liquid of the fixative. The replenished fixative is then discharged into the sampling bottle 6. By setting a feeding mechanism, when a volatile component in the fixative evaporates, the original liquid can be replenished separately according to actual needs, and the ratio of the fixative is accurately maintained to ensure the stability of the performance of the fixative, thereby improving the accuracy of subsequent sampling and detection. While extracting the fixative into the sampling chamber 3, the original liquid in the liquid storage chamber 28 can be automatically discharged by squeezing the push plate 30 and mixed with the fixative for replenishment. No additional complicated operation is required, which improves the efficiency of replenishing the original liquid and makes the entire sampling and replenishment process more convenient and efficient.

[0036] In a further preferred embodiment of the present invention, a plurality of silicone baffles are installed in the drainage channel 31, and the plurality of silicone baffles are used to seal the drainage channel 31. A liquid inlet hopper for adding raw liquid into the liquid storage chamber 28 is installed on one side of the sampling box 1.

[0037] In this embodiment, when the original liquid in the liquid storage chamber 28 needs to be discharged into the sampling chamber 3, the one-way screw 29 rotates to drive the push plate 30 to slide down. During the sliding process of the push plate 30, pressure is applied to the silicone baffle, and the silicone baffle is pressed and opened, so that the drainage channel 31 is unobstructed, and the original liquid can be discharged into the sampling chamber 3 through the drainage channel 31. In addition, the silicone baffle here is made of fluorosilicone, which can prevent it from being corroded by the fixed liquid. In the initial state, the silicone baffle seals the drainage channel 31, effectively preventing the original liquid in the liquid storage chamber 28 from leaking when it does not need to be replenished, thereby avoiding contamination of the interior of the sampling box 1 due to leakage of the original liquid.

[0038] In a further preferred embodiment of the present invention, the sampling box 1 is equipped with two glass observation windows for observing the liquid levels in the sampling chamber 3 and the liquid storage chamber 28.

[0039] In this embodiment, through the glass observation window, the operator can know the liquid level in the sampling chamber 3 and the liquid storage chamber 28 in real time, so as to timely grasp the remaining amount of the fixing solution and the raw solution.

[0040] In order to further improve the use effect of this device, in addition to the above scheme, this scheme also has the following embodiments: In another embodiment of the present invention, mounting boxes 32 are installed on the top and bottom of the liquid storage chamber 28, a first switch device 33 is installed in the mounting box 32, touch rods 34 are fixedly installed on the upper and lower sides of the push plate 30, the two touch rods 34 are respectively adapted to the two first switch devices 33, a protective film is provided on the mounting box 32, the protective film cover is provided on the first switch device 33, and an alarm 35 for sound and light warning is installed on the sampling box 1.

[0041] In this embodiment, when the push plate 30 moves to a specific position, the upper and lower contact rods 34 contact the corresponding first switch devices 33. For example, when the amount of raw liquid in the liquid storage chamber 28 decreases to a certain level, the push plate 30 moves to the bottom, and the bottom contact rods 34 contact the first switch device 33 installed in the bottom mounting box 32 of the liquid storage chamber 28. Alternatively, when the push plate 30 moves to the top of the liquid storage chamber 28, the top contact rods 34 contact the first switch device 33 installed in the top mounting box 32 of the liquid storage chamber 28. Once the contact rods 34 contact the first switch device 33, the alarm 35 automatically activates, emitting an audible and visual warning signal, and the motor 41 automatically shuts down. By providing a coordinated mechanism between the first switch device 33 and the contact rods 34, the alarm 35 can promptly issue an audible and visual warning when the raw liquid level in the liquid storage chamber 28 is abnormal (e.g., too little raw liquid or when the push plate 30 has moved to its limit position), prompting the operator to add raw liquid or check the equipment immediately, thereby preventing subsequent sampling and refilling operations from being affected by insufficient raw liquid or equipment failure.

[0042] In another embodiment of the present invention, a mixing mechanism for homogenizing the fixed liquid is provided in the sampling chamber 3, and the mixing mechanism includes: an installation chamber opened in the sampling box 1; a partition 36 fixedly installed in the sampling chamber 3; a circular plate 37 rotatably installed on the partition 36, and the rotating shaft of the circular plate 37 extends into the installation chamber; a stirring rod 38 rotatably installed on the circular plate 37 for mixing the fixed liquid and the added original liquid; a ring gear 39 fixedly installed in the sampling chamber, and the ring gear 39 is located at the top of the partition 36; connecting gears 40 respectively provided on the circular plate 37 and the stirring rod 38, the two connecting gears 40 are meshed with each other, and the connecting gear 40 located on the circular plate 37 is meshed with the ring gear 39; a motor 41 fixedly installed in the installation chamber; bevel gears 42 respectively fixedly sleeved on the coupling of the motor 41 and the rotating shaft of the circular plate 37, and the two bevel gears 42 are meshed with each other.

[0043] In this embodiment, after the stock solution is added, the fixing solution and the stock solution need to be mixed to homogenize the fixing solution. At this time, motor 41 is started. The bevel gear 42 on the coupling of motor 41 drives the bevel gear 42 on the rotating shaft of circular plate 37 to rotate, thereby driving circular plate 37 to rotate. As circular plate 37 rotates, stirring rod 38 orbits along with circular plate 37. Simultaneously, because connecting gear 40 on circular plate 37 meshes with ring gear 39, connecting gear 40 on circular plate 37 rolls along ring gear 39 during the rotation of circular plate 37, thereby driving connecting gear 40 on stirring rod 38 to rotate, causing stirring rod 38 to simultaneously rotate while orbiting. This combined motion of stirring rod 38 while simultaneously rotating produces a more intense stirring effect, ensuring thorough contact and mixing of the fixing solution and the added stock solution. This significantly accelerates the mixing efficiency of the stock solution and fixing solution, and shortens the time required to homogenize the fixing solution.

[0044] In another embodiment of the present invention, a linkage chamber is further provided in the sampling box 1, and a linkage mechanism for synchronously driving the one-way screw 29 and the circular plate 37 to rotate is provided in the linkage chamber, and the linkage mechanism includes: a support plate 43 fixedly mounted in the linkage chamber; a telescopic rod 44 rotatably mounted on the support plate 43; two groups of first conical differential wheels 45 fixedly mounted on the two telescopic rods 44 and the rotating shafts of the one-way screw 29, respectively, the two groups of first conical differential wheels 45 are meshed with each other, and the two groups of first conical differential wheels 45 are stacked; a linkage rod 46 fixedly mounted on the rotating shaft of the circular plate 37, the linkage rod 46 extending into the linkage chamber; a connecting gear 48 provided on one side of the support plate 43 and on the rotating shafts of the two telescopic rods 44; a second conical differential wheel 47 fixedly mounted on the rotating shaft of any one of the telescopic rods 44 and the top of the linkage rod 46, the two second conical differential wheels 47 are meshed with each other; and a replacement mechanism provided in the linkage chamber for replacing the positions of the two telescopic rods 44.

[0045] In this embodiment, in the initial state, the telescopic rod 44 at the bottom is in an extended state, and the first conical differential gear 45 used in conjunction with it is in an engaged state, while the telescopic rod 44 at the top is in a retracted state, and the first conical differential gear 45 used in conjunction with it is in a disengaged state. When the motor is driven, the meshing transmission of the second conical differential gear 47 drives one of the telescopic rods 44 to rotate. Since the corresponding set of first conical differential gears 45 of the lower telescopic rod 44 is meshed at this time, the rotation of the telescopic rod 44 drives the one-way screw 29 to rotate. At the same time, the circular plate 37 also rotates synchronously under the drive of the motor 41, causing the stirring rod 38 to rotate synchronously with the one-way screw 29. The rotation of the one-way screw 29 causes the push plate 30 to move downward, squeezing the raw liquid in the liquid storage chamber 28, thereby replenishing the raw liquid.

[0046] When the push plate 30 needs to be moved upward and reset, the motor is turned off and the displacement mechanism is activated, causing the initial positions of the two telescopic rods 44 to be swapped. That is, the originally extended telescopic rod 44 is retracted, and the originally retracted telescopic rod 44 is extended. At this time, the previously separated first conical differential gears 45 are meshed, and under the action of the connecting gear 48, the one-way screw 29 is reversed, thereby moving the push plate 30 upward and reset.

[0047] When there is no need to add stock liquid, the state of the two telescopic rods 44 is changed through the replacement mechanism, so that the two sets of first conical differential wheels 45 are in a non-meshing state. The one-way screw 29 and the circular plate 37 are rotated synchronously by the linkage mechanism, so that while the stock liquid is added, the stirring rod 38 can mix the fixed liquid and the stock liquid, thereby improving the consistency and efficiency of the operation and reducing the number of equipment used and the number of operating steps. By using the replacement mechanism to replace the position of the two telescopic rods 44, the one-way screw 29 is reversed, so that the push plate 30 can move up and reset, which is convenient for the next stock liquid addition operation.

[0048] In another embodiment of the present invention, the replacement mechanism includes: a group of racks 49 fixedly mounted on the outer casings of the two telescopic rods 44; a rotating rod 50 rotatably mounted in the linkage cavity, and a driving gear 51 for driving a group of racks 49 to move is fixedly mounted on one end of the rotating rod 50; a steel wire rope 52 wound around the rotating rod 50; a first electric push rod 53 arranged in the linkage cavity and located on one side of the rotating rod 50, the first electric push rod 53 is fixedly connected to the steel wire rope 52; a cylinder fixedly mounted on the other end of the rotating rod 50; a second electric push rod 81 provided on one side of the first electric push rod 53, and the pressure block on the second electric push rod 81 is in close contact with the cylinder.

[0049] In this embodiment, when the states of the two telescopic rods 44 need to be swapped, the second electric push rod 81 is first activated, causing its pressure block to move away from the cylinder, releasing the brake on the rotating rod 50. The first electric push rod 53 is then activated, pulling the wire rope 52. The wire rope 52 rotates the rotating rod 50. The rotation of the rotating rod 50 drives the driving gear 51 to rotate, which then engages with the rack 49, thereby driving the rack 49 to move. Because the two racks 49 are arranged vertically, driven by the driving gear 51, the two racks 49 will move synchronously in opposite directions, thereby causing the two telescopic rods 44 to change position and achieve the swap operation of the two telescopic rods 44. Through the coordinated operation of the first electric push rod 53 and the second electric push rod 81, the rotation of the rotating rod 50 can be precisely controlled, thereby achieving the precise swap of the states of the two telescopic rods 44, ensuring the stability and reliability of the equipment operation.

[0050] In another embodiment of the present invention, a connecting cylinder 54 is fixedly installed in the linkage cavity. A torsion spring 55 for resetting the rotating rod 50 is provided in the connecting cylinder 54. One end of the torsion spring 55 is fixedly connected to the inner wall of the cylinder.

[0051] In this embodiment, when the states of the two telescopic rods 44 need to be replaced, the second electric push rod 81 is started to make its pressure block move away from the cylinder, releasing the brake on the rotating rod 50, and then the first electric push rod 53 is started to pull the wire rope 52, and the wire rope 52 pulls the rotating rod 50 to rotate. During the rotation of the rotating rod 50, the torsion spring 55 fixedly connected to the inner wall of the cylinder is compressed synchronously, thereby storing elastic force. At this time, the push plate 30 can be reset. After resetting, the replacement operation of the telescopic rod 44 is performed again. At this time, the first electric push rod 53 is stretched, and the elastic force stored in the torsion spring 55 is released, pushing the cylinder and the rotating rod 50 to rotate in the opposite direction, so that the rotating rod 50 is reset to the initial position. By utilizing the elastic characteristics of the torsion spring 55, after completing the two replacement operations of the telescopic rod 44, the rotating rod 50 can be automatically reset, and no additional driving device is required to return the rotating rod 50 to the initial state.

[0052] In another embodiment of the present invention, a guide groove is provided on one side of the linkage cavity, a guide rod 56 is fixedly installed in the guide groove, a guide block 57 is slidably sleeved on the guide rod 56, and the guide block 57 is fixedly connected to the mounting seat of the telescopic rod 44.

[0053] In this embodiment, the guide block 57 cooperates with the guide rod 56 to accurately guide the movement direction of the telescopic rod 44, thereby ensuring that during the movement of the telescopic rod 44, a set of first conical differential wheels 45 associated therewith can accurately achieve an engaged or disengaged state, ensuring that the one-way screw 29 can normally achieve forward or reverse rotation, thereby controlling the up and down movement of the push plate 30.

[0054] In another embodiment of the present invention, a liquid level sensor 58 is installed on the sampling box 1, and the probe of the liquid level sensor 58 extends into the sampling chamber 3. An air pressure sensor 59 for detecting the air pressure in the advance chamber 3 is installed in the sampling chamber 3. The sampling box 1 is provided with an inert gas storage tank 60 for replacing the gas in the sampling chamber 3. The sampling box 1 is provided with an air intake pipe, and the air intake pipe is provided with a pipe connector 61, and the pipe connector 61 is connected to the exhaust end of the inert gas storage tank 60. The sampling box 1 is provided with an exhaust pipe 62 for discharging the gas in the sampling chamber 3, and valves are provided on the exhaust pipe 62 and the air intake pipe.

[0055] In this embodiment, when the air pressure in the sampling chamber 3 is too high, it will affect the efficiency of the liquid flowing into the sampling chamber 3. At this time, the air in the sampling chamber 3 can be replaced by inert gas. The specific operation is to open the valve on the air inlet pipe connected to the exhaust end of the inert gas storage tank 60. The inert gas enters the sampling chamber 3 from the inert gas storage tank 60 through the pipe connector 61 and the air inlet pipe, and squeezes out the air in the sampling chamber 3. The exhaust pipe 62 is used to discharge the original gas in the sampling chamber 3. A valve is also provided on the exhaust pipe 62. By controlling the valves on the air inlet pipe and the exhaust pipe 62, the air pressure in the sampling chamber 3 can be adjusted to an appropriate range. In addition, the exhaust pipe 62 can be connected to a hose, and the hose is connected to the pipe cover of the serpentine tube 14 to facilitate the purification of the discharged gas to avoid polluting the environment. Through the setting of the liquid level sensor 58 and the air pressure sensor 59, the liquid level and air pressure in the sampling chamber 3 can be monitored in real time and accurately, providing accurate data support for subsequent control operations, ensuring the stability and reliability of the extraction process.

[0056] In another embodiment of the present invention, the sampling box 1 is provided with an overpressure alarm mechanism for overpressure alarm of the sampling chamber 3, and the overpressure alarm mechanism includes: a pressure relief chamber 63 provided in the sampling box 1, two connecting tubes 64 are installed on the pressure relief chamber 63, the connecting tube 64 located on the left is connected to the sampling chamber 3, and the other connecting tube 64 extends out of the sampling box 1; an annular plate 65 fixedly installed in the pressure relief chamber 63; a conical plate 66 provided on the annular plate 65 for sealing the annular plate 65, and a sealing ring 67 is provided on the conical plate 66 for sealing the gap between the annular plate 65 and the conical plate 66; a limiting rod 68 fixedly installed on one side of the conical plate 66; a fixing cylinder 69 fixedly installed at one end of the limiting rod 68; a bent rod 70 installed on the fixing cylinder 69; a second switch device 71 fixedly installed in the pressure relief chamber 63, and the second switch device 71 is adapted to the bent rod 70.

[0057] In this embodiment, when the air pressure sensor 59 fails and cannot detect the air pressure in the sampling chamber 3, if the air pressure in the sampling chamber 3 exceeds a certain threshold, the high-pressure gas will enter the pressure relief chamber 63 through the left connecting tube 64 and press against the conical plate 66, causing the conical plate 66 to move to one side, thereby exposing the gap in the annular plate 65 and achieving pressure relief. At the same time, when the conical plate 66 moves, it will drive the fixed cylinder 69 and the bent rod 70 to move together. When the bent rod 70 moves to contact the second switch device 71, the second switch device 71 will transmit a signal to the controller 2 and the alarm. After the controller 2 receives the signal, the alarm 35 will sound an alarm to remind the operator that the air pressure in the sampling chamber 3 is too high. In the event that the air pressure sensor 59 may fail, the overpressure alarm mechanism provides a double guarantee for the air pressure safety of the sampling chamber 3. Even if the air pressure sensor 59 fails, when the air pressure in the sampling chamber 3 is too high, the overpressure alarm mechanism can still respond in time to avoid safety accidents caused by excessive air pressure.

[0058] In another embodiment of the present invention, a fixing frame 72 is fixedly installed in the pressure relief chamber 63, and the fixing frame 72 is slidably connected to the limiting rod 68. A fixing spring 73 is sleeved on the limiting rod 68, and the two ends of the fixing spring 73 are respectively fixedly connected to the fixing frame 72 and the conical plate 66. A limiting clip 74 is fixedly installed in the pressure relief chamber 63, and an elastic steel plate 75 is fixedly installed on the conical plate 66. The elastic steel plate 75 is clipped with the limiting clip 74.

[0059] In this embodiment, under normal working conditions, that is, when the air pressure sensor 59 is not faulty, the air pressure in the sampling chamber 3 is replaced and controlled by the inert gas in the inert gas storage tank 60, and the air pressure is adjusted by the valves on the air inlet pipe and the exhaust pipe 62, thereby realizing dual air pressure control. At this time, the air pressure in the sampling chamber 3 is within a normal range, the elastic steel plate 75 is engaged with the limit card strip 74, and the conical plate 66 is limited. The fixed spring 73 is also in a certain pre-tightened state, which together prevents the conical plate 66 from being pushed out by normal air pressure, thereby ensuring that the overpressure alarm mechanism does not malfunction.

[0060] In another embodiment of the present invention, a reset mechanism for resetting the conical plate 66 is provided in the pressure relief chamber 63, and the reset mechanism includes: a threaded rod 76 rotatably installed in the pressure relief chamber 63; a mounting block 77 threadedly sleeved on the threaded rod 76; an insertion rod 78 fixedly mounted on the mounting block 77, and the insertion rod 78 is slidingly connected to the fixed cylinder 69; a connecting rod 79 rotatably provided in the sampling box 1; and differential gears 80 fixedly sleeved on the connecting rod 79 and the threaded rod 76, respectively, and the two differential gears 80 are engaged with each other.

[0061] In this embodiment, when the pressure in the sampling chamber 3 exceeds the pressure, the conical plate 66 is ejected, and its elastic steel plate 75 is located on the other side of the limit card strip 74 and cannot be reset automatically. After the overpressure alarm mechanism is activated, the staff needs to manually rotate the connecting rod 79; When connecting rod 79 rotates, it drives threaded rod 76 to rotate through the meshing transmission of two differential gears 80. Because mounting block 77 is threadedly connected to threaded rod 76, when threaded rod 76 rotates, mounting block 77 moves along threaded rod 76. When mounting block 77 moves, it drives insertion rod 78 along fixed cylinder 69. After insertion rod 78 contacts fixed cylinder 69, it pushes fixed cylinder 69 and limit rod 68 to move. When limit rod 68 moves, it drives conical plate 66 to move synchronously, allowing conical plate 66 to overcome the limit of elastic steel plate 75 and limit clip 74, thereby completing the reset operation of elastic steel plate 75 and conical plate 66.

[0062] In summary, compared with related technologies, this device can ensure accurate sampling and safe operation by accurately controlling the quantity through weighing and liquid level monitoring, and the gas purification mechanism can efficiently adsorb volatile gases.

[0063] In the several embodiments provided in this application, it should be understood that the disclosed device can be implemented in other ways.

[0064] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope of protection of the present invention.

Claims

1. A stationary liquid detection sampling device, characterized in that: include: A sampling box and a controller provided on the sampling box, wherein a fixing liquid bottle and a sampling bottle are provided on both sides of the sampling box respectively; A sampling cavity is provided in the sampling box for storing a fixative; A weighing device is provided on one side of the sampling box for monitoring the weight of the fixing liquid bottle and the sampling bottle; Sealing caps threadedly mounted on the fixing liquid bottle and the sampling bottle, respectively, wherein the sealing caps are provided with liquid level monitoring modules for detecting the liquid levels in the fixing liquid bottle and the sampling bottle; A gas purification mechanism is provided on the sampling box for adsorbing and purifying the volatile gas discharged from the sampling bottle.

2. The stationary liquid detection sampling device according to claim 1, characterized in that: Several fixed tubes are installed on the sampling box, and several of the fixed tubes extend into the sampling cavity. Three-way valves are installed on the other ends of the fixed tubes. The three-way valve is detachably provided with a connecting tube, and several of the connecting tubes are respectively connected to the pipe mounting parts on the sealing cover. A flow meter is installed on the fixed tube connected to the fixed liquid bottle. Several pump bodies are installed in the sampling cavity, and several of the pump bodies are respectively connected to the fixed tubes.

3. The stationary liquid detection sampling device according to claim 1, characterized in that: The gas purification mechanism comprises: A placement slot is provided on one side of the sampling box; a serpentine tube disposed in the placement tank, wherein activated carbon for adsorbing volatile gases is placed in the serpentine tube; Pipe covers respectively threadedly mounted on both ends of the serpentine pipe; A gas diffusion tube is installed on any of the tube covers and connected to the sampling bottle.

4. The stationary liquid detection sampling device according to claim 3, characterized in that: A bracket is fixedly installed in the serpentine tube, a connecting rod is slidably sleeved on the bracket, a connecting spring is sleeved on the connecting rod, and a sealing plate is provided on the other tube cover, the sealing plate is adapted to the exhaust port of the tube cover, and the sealing plate is fixedly connected to the connecting rod and the top of the connecting spring.

5. The stationary liquid detection sampling device according to claim 4, characterized in that: A connecting seat is fixedly installed in the placement groove, a connecting block is fixedly installed on one side of the serpentine tube, the connecting block is placed in the connecting seat, a connecting spring is fixedly installed on the top of the inner wall of the connecting seat, and a pressure plate for limiting the connecting block is fixedly installed on the bottom end of the connecting spring, and the pressure plate is in close contact with the top of the connecting block.

6. The stationary liquid detection sampling device according to claim 5, characterized in that: An annular baffle is fixedly installed in the serpentine tube, and a partition net is placed on the annular baffle. The partition net is located below the bracket and is used to separate the activated carbon.

7. The stationary liquid detection sampling device according to claim 1, characterized in that: A storage slot for storing the weighing device is provided on one side of the sampling box. Metal clips are installed on one side of the storage slot and the weighing device, and a plurality of the metal clips are connected to each other.

8. The stationary liquid detection sampling device according to claim 1, characterized in that: The sampling box is provided with a feeding mechanism for adding raw liquid to the fixed liquid, and the feeding mechanism includes: a liquid storage chamber provided in the sampling box; a one-way screw rotatably installed in the liquid storage chamber; a push plate threadedly sleeved on the one-way screw for discharging the raw liquid in the liquid storage chamber into the sampling chamber; and a drainage channel opened at the bottom of the liquid storage chamber and connected to the sampling chamber.

9. The stationary liquid detection sampling device according to claim 8, characterized in that: A plurality of silicone baffles are installed in the drainage channel, and the plurality of silicone baffles are used to seal the drainage channel. A liquid inlet hopper for adding raw liquid into the liquid storage cavity is installed on one side of the sampling box.

10. The stationary liquid detection sampling device according to claim 8, characterized in that: The sampling box is provided with two glass observation windows for observing the liquid levels in the sampling cavity and the liquid storage cavity.

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