Acetone sample adding and spraying device

Abstract

The utility model discloses an acetone sample adding and spraying device which comprises a nozzle, a sample groove device and an acetone sample adding device, the sample groove device comprises a sample groove body, a sample cup, a slide groove and a slide sensor; the acetone sample adding device comprises an acetone sample storage bottle, a sample adding device, a heating device, a feeding pipe and a conveying pipe; the input end of the sample adding device is communicated with the acetone sample storage bottle through a feeding pipe, and the output end of the sample adding device is communicated with the heating device through a conveying pipe; a nozzle is arranged at the tail end of the heating device; the acetone sample adding and spraying device provided by the utility model has high efficiency and stability of acetone evaporation and spraying treatment, and ensures the operation safety of laboratories and personnel.

Description

Technical Field

[0001] The utility model relates to the field of acetone vapor generation, in particular to an acetone sample adding and spraying device. Background Art

[0002] In the process of determining the concentration of asbestos fiber dust in the workplace air, it is required to use acetone vapor fumigation to make the filter membrane that collects asbestos or other inorganic fiber dust transparent. This is a key step in the determination of fiber dust.

[0003] Acetone vapor generating devices in existing standards, such as Figure 1 As shown, it consists of a constant temperature electric heating jacket, a three-necked flask, a straight condenser, and a piston elbow pipe, which are assembled and fixed on an iron frame. Set the temperature of the electric heating jacket to 70°C and keep it at a constant temperature. Open the steam nozzle piston and use tweezers to place the glass slide carrying the filter membrane sample directly under the acetone vapor, 15mm to 25mm away from the outlet for 3s to 5s. Slowly move the filter membrane to the outlet so that the filter membrane is evenly covered by the vapor until it becomes transparent. Avoid excessive vapor to cause acetone droplets to drip onto the filter membrane.

[0004] Research has found that the problems that still exist in the acetone vapor generator in the prior art are: 1. The structural design of the acetone vapor generator in the prior art is relatively simple, and it cannot guarantee efficient acetone vapor generation and spraying, which results in a large amount of acetone consumption and waste; 2. When heating the acetone solution, the heating temperature cannot guarantee that the acetone solution is heated evenly after implementation, and thus cannot achieve efficient evaporation, thereby affecting the operating efficiency. 3. Most of the existing acetone vapor generators are composed of glass structure products such as flasks and straight condensers, so they have poor safety and are inconvenient to use. Utility Model Content

[0005] The utility model provides an acetone sample adding and spraying device, which has a simple structure, reasonable functional design, and convenient operation, and improves the reliability and safety of acetone vapor generation. At the same time, the acetone consumption is small, and the device abandons the extensive evaporation and condensation structure, avoiding the problems of high energy consumption and environmental pollution.

[0006] The utility model provides an acetone sample adding and spraying device, comprising a nozzle 10, a sample slot device 20, and an acetone sample adding device 30;

[0007] The sample tank device 20 includes a sample tank body 21, a sample cup 22, a glass slide tank, and a glass slide sensor 24; the bottom of the inner wall of the sample tank body 21 is a waste liquid collection chamber, and a slideway 23 is provided from one end to the other end of the inner wall of the sample tank body 21; a glass slide sensor 24 is provided in the middle of the slideway; a glass slide tank is provided inside the sample cup 22; the glass slide tank is used to install a glass slide; the middle position of the slideway where the glass slide sensor 24 is located corresponds to the position of the nozzle 10;

[0008] The acetone adding device 30 comprises an acetone storage bottle 31, an adding device 32, a heating device 33, a feeding pipe 34 and a delivery pipe 35; the input end of the adding device 32 is connected to the acetone storage bottle 31 through the feeding pipe 34 (for absorbing the acetone in the acetone storage bottle 31), and the output end of the adding device 32 is connected to the heating device 33 through the delivery pipe 35; and a nozzle 10 is provided at the end of the heating device 33 (for spraying acetone vapor); the liquid volume meter 40 is arranged at the adding device 32, and the liquid volume meter 40 is used to measure the liquid volume of the acetone solution sucked by the adding.

[0009] Preferably, as an implementable embodiment, the heating device 33 comprises a rectangular parallelepiped heating body, a heating cavity located inside the heating body, and a gas transmission cavity connected to the heating cavity;

[0010] The heating cavity is vertically extended from one end of the heating body to the other end, the top of the heating cavity is connected to the material delivery pipe 35, and the bottom of the heating cavity is a solution buffer accommodating groove with a V-shaped cross-section; the gas delivery cavity is horizontally extended along the heating body, and the extension direction of the gas delivery cavity is perpendicular to the extension direction of the heating cavity;

[0011] The height of the connection between the gas delivery cavity and the heating cavity is higher than the solution buffer accommodating groove at the bottom of the heating cavity.

[0012] Preferably, as an implementable solution, the heating body is an aluminum alloy structure; the top upper edge located on the left side of the gas transmission cavity protrudes from the connection with the heating cavity, and is provided with a curved pipe edge portion extending downward.

[0013] Preferably, as an implementable embodiment, a gas delivery branch pipeline cavity extending vertically downward along the heating body is provided in the middle position of the gas delivery cavity; a nozzle 10 is connected to the end of the gas delivery branch pipeline cavity.

[0014] Preferably, as an implementable embodiment, the end of the gas transmission branch pipeline cavity is detachably connected to the nozzle 10.

[0015] Preferably, as an implementable solution, a glass slide preheating device is provided on the inner wall of the sample slot body 21 at both ends of the slide; the glass slide preheating device is used to preheat the sample cup 22 and the glass slide on the sample cup 22.

[0016] Preferably, as an implementable embodiment, the glass slide preheating heating device and the heating body are both electric heating devices; and the slide is a linear slide or an elliptical slide.

[0017] Preferably, as an implementable embodiment, the interior of the nozzle 10 is coated with an anti-corrosion coating.

[0018] Preferably, as an implementable solution, an acetone adsorption layer 25 is also provided at the bottom of the inner wall of the sample slot body 21; the acetone adsorption layer 25 is used to quickly adsorb the acetone vapor sprayed into the waste liquid collection chamber.

[0019] Preferably, as an implementable embodiment, the acetone adsorption layer 25 is an activated carbon layer or a porous zeolite layer.

[0020] Compared with the prior art, the embodiments of the present application have at least the following technical effects:

[0021] The utility model provides an acetone evaporation spray device, which includes a nozzle, a sample tank device and an acetone sample adding device. The sample tank device includes a sample tank body, a sample cup, a glass slide tank and a glass slide sensor. The acetone sample adding device includes an acetone sample storage bottle, a sample adding device, a heating device, a feeding pipe and a feeding pipe. The heating device includes a heating body, a heating cavity and a gas delivery cavity. The heating cavity extends inside the heating body, and the bottom is a solution buffer accommodating groove with a V-shaped cross-section. The gas delivery cavity is connected to the heating cavity, and the height of the connection is higher than the solution buffer accommodating groove. The heating body adopts an aluminum alloy structure. A gas delivery branch pipeline cavity is arranged in the middle position of the gas delivery cavity, and the end of the gas delivery cavity is connected to the nozzle. A waste liquid collection cavity and an acetone adsorption layer are arranged at the bottom of the inner wall of the sample tank body. Glass slide preheating heating devices are arranged at both ends of the slide. The inside of the nozzle is coated with an anti-corrosion coating.

[0022] Specifically, the following functions and effects are as follows: 1. High efficiency: The technical solution of the utility model adopts a highly efficient acetone solution heating structure to ensure the high efficiency of acetone generation; 2. Safety: The amount of acetone used is less, which avoids the waste of large amounts of acetone spraying during the traditional acetone vapor fumigation operation, and because acetone has been included in the "List of Precursor Chemicals", the vapor volatilized from it has a certain toxicity, so the amount of acetone sprayed out by the embodiment of the present application is also less; 3. Energy saving and sufficient heating: The technical solution of the utility model has a heating body composed of an internal heating cavity and a gas transmission cavity connected to the heating cavity; a solution buffer storage groove with a V-shaped cross section is located at the bottom of the heating cavity; the solution buffer storage groove with a V-shaped cross section is conducive to storing the solution and increasing the heating area. In addition, the gas transmission cavity has the function of realizing secondary heating of the acetone vapor, which ensures the full formation of the acetone vapor and reduces the heat energy consumption of the extensive acetone vapor generation in the prior art.

[0023] In summary, the technical solution of the utility model has high efficiency and stability of acetone evaporation spray treatment, can improve the repeatability of experimental operation, and has good safety and environmental friendliness. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a schematic diagram of an acetone vapor generating device in the prior art;

[0026] Figure 2 A schematic diagram of an acetone sample adding and spraying device provided in Embodiment 1 of the utility model;

[0027] Figure 3 A schematic diagram of a heating device in an acetone sample adding and spraying device provided in the second embodiment of the utility model;

[0028] Reference numerals: nozzle 10, sample slot device 20; sample slot body 21; sample cup 22; slide 23; glass slide sensor 24; acetone adsorption layer 25; acetone sample adding device 30; acetone sample storage bottle 31; sample adding device 32; heating device 33; heating cavity 331; gas delivery cavity 332; curved pipe edge 3321; solution buffer accommodating groove 333; gas delivery branch pipeline cavity 334; feeding pipe 34; delivery pipe 35; liquid volume meter 40. DETAILED DESCRIPTION

[0029] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0031] like Figure 2 As shown, the embodiment of the utility model provides an acetone sample adding spray device, including a nozzle 10, a sample slot device 20 (including a sample slot body 21, a sample cup 22, a glass slide slot, a glass slide sensor 24), and an acetone sample adding device 30;

[0032] The bottom of the inner wall of the sample tank body 21 is a waste liquid collection chamber, and a slide 23 is provided from one end to the other end of the inner wall of the sample tank body 21; a glass slide sensor 24 is provided in the middle of the slide; a glass slide groove is provided inside the sample cup 22; the glass slide groove is used to install a glass slide; the middle position of the slide where the glass slide sensor 24 is located corresponds to the position of the nozzle 10;

[0033] The acetone adding device 30 includes an acetone storage bottle 31, an adding device 32, a heating device 33, a feeding pipe 34 and a delivery pipe 35; the input end of the adding device 32 is connected to the acetone storage bottle 31 through the feeding pipe 34 (for absorbing the acetone in the acetone storage bottle 31), and the output end of the adding device 32 is connected to the heating device 33 through the delivery pipe 35; and the end of the heating device 33 is provided with a nozzle 10 (for spraying acetone vapor); the liquid volume meter 40 (i.e., a volume measuring device) is provided at the adding device 32, and the liquid volume meter 40 is used to measure the liquid volume of the acetone solution sucked by the adding. The surface of the above-mentioned liquid volume meter is provided with scale lines, and the liquid volume of the acetone solution temporarily added by the adding device 32 can be intuitively read through the scale lines.

[0034] See also Figure 3 The heating device 33 includes a rectangular parallelepiped heating body, a heating cavity 331 located inside the heating body, and a gas delivery cavity 332 connected to the heating cavity;

[0035] The heating cavity 331 is vertically extended from one end of the heating body to the other end, the top of the heating cavity is connected to the material delivery pipe 35, and the bottom of the heating cavity is a solution buffer accommodating groove 333 with a V-shaped cross-section; the gas delivery cavity is horizontally extended along the heating body, and the extension direction of the gas delivery cavity is perpendicular to the extension direction of the heating cavity;

[0036] The height of the connection between the gas delivery cavity and the heating cavity is higher than the solution buffer accommodating groove 333 at the bottom of the heating cavity.

[0037] The solution buffering and accommodating groove is used to achieve the cache heat treatment of the acetone solution, thereby avoiding uneven heating of the solution. The solution buffering and accommodating groove with a V-shaped cross section is conducive to storing the solution and increasing the heating area. The gas delivery cavity has the function of providing secondary heating to the acetone vapor or subjecting the solution buffering and accommodating groove to heat.

[0038] Preferably, as an implementable embodiment, the heating body is an aluminum alloy structure. The top upper edge on the left side of the gas delivery cavity 332 protrudes from the connection with the heating cavity 331, and is provided with a curved pipe edge portion 3321 extending downward;

[0039] It should be noted that in the above technical solution, the heating body preferably uses an aluminum alloy structure, which is easy to heat and has high heating efficiency, and can quickly heat the acetone solution. At the same time, the top upper edge located on the left side of the gas delivery cavity 332 protrudes from the connection and forms a curved tube edge portion extending downward; the curved tube edge portion 3321 extending downward can block the acetone liquid flowing down from above, and at the same time prevent the acetone vapor rising due to heat at the V-shaped cross section from contacting the acetone liquid flowing down, so as to avoid affecting the output acetone vapor flow rate.

[0040] See also Figure 3 A gas delivery branch pipeline cavity 334 extending vertically downward along the heating body is provided in the middle position of the gas delivery cavity; a nozzle 10 is connected to the end of the gas delivery branch pipeline cavity.

[0041] It should be noted that the cache heat treatment of the acetone solution is achieved by setting the solution cache holding groove. At the same time, the solution cache holding groove with a V-shaped cross-section is conducive to storing the solution. At the same time, the two cavities adopt a T-shaped design to avoid direct output of the acetone solution, which causes uneven heating of the solution; and this is conducive to increasing the heating area. The gas transmission cavity is also a part of the heating body and also has the function of realizing secondary heating of the acetone vapor, or affecting the heat of the solution cache holding groove.

[0042] See also Figure 3 The end of the gas delivery branch pipeline cavity 334 is detachably connected to the nozzle 10. The end of the gas delivery branch pipeline cavity is detachably connected to the nozzle, which is convenient for cleaning and maintenance.

[0043] Preferably, as an implementable solution, a glass slide preheating device is provided on the inner wall of the sample slot body 21 at both ends of the slide; the glass slide preheating device is used to preheat the sample cup 22 and the glass slide on the sample cup 22.

[0044] The inner wall of the sample tank body is specifically installed with glass slide preheating devices at both ends of the inner wall. The main function of the glass slide preheating device is to preheat the sample cup and the glass slide. The above-mentioned preheating treatment of the glass slide can ensure that the acetone vapor fumigation fully reacts with the heated filter membrane and improves the efficiency of the filter membrane transparency during acetone vapor fumigation; the heating body and the glass slide preheating device are both electric heating devices.

[0045] Preferably, as an implementable embodiment, the glass slide preheating heating device and the heating body are both electric heating devices; and the slide is a linear slide or an elliptical slide.

[0046] Preferably, as an implementation scheme, the interior of the nozzle 10 is coated with an anti-corrosion coating (ie, a coating that prevents corrosion from acetone vapor).

[0047] It should be noted that acetone vapor is corrosive to a certain extent. Acetone (chemical formula: C3H6O) is an organic solvent with strong dissolving power and volatility. When acetone vapor comes into contact with certain materials, it may cause corrosion or damage. Acetone vapor can react with some metals, causing corrosion or oxidation of the metals. In particular, for metals that are easily oxidized, such as copper and aluminum, acetone vapor is highly corrosive. The above-mentioned nozzle is coated with an anti-corrosion coating to enhance the durability and stability of the device.

[0048] In addition, acetone vapor may also dissolve or damage certain plastic and rubber materials. Therefore, when using acetone, especially when the nozzle directly delivers acetone vapor for a long time, it is necessary to increase the design of anti-corrosion coating to prevent corrosion or damage.

[0049] Preferably, as an implementable solution, an acetone adsorption layer 25 is also provided at the bottom of the inner wall of the sample slot body 21; the acetone adsorption layer 25 is used to quickly adsorb the acetone vapor sprayed into the waste liquid collection chamber.

[0050] The acetone adsorption layer quickly adsorbs the acetone vapor sprayed into the waste liquid collection chamber, reducing the volatilization and leakage of acetone. The acetone adsorption layer can be an activated carbon layer or a porous zeolite layer, which has a high adsorption efficiency.

[0051] Preferably, as an implementable embodiment, the acetone adsorption layer 25 is an activated carbon layer or a porous zeolite layer.

[0052] It should be noted that appropriate safety measures should be taken when handling acetone vapor. In order to further ensure safety, an acetone adsorption layer is set in the waste liquid collection chamber to reduce potential harm to the human body and the environment.

[0053] It should be noted that the above-mentioned activated carbon layer is a commonly used adsorbent with a large specific surface area and pore structure, which can adsorb and fix acetone molecules. Activated carbon can be used as a filler or filter medium to adsorb acetone vapor on its surface.

[0054] Other adsorption layer materials can also be selected: In addition to activated carbon, there are other adsorbents or adsorption materials that can be used to adsorb acetone vapor. These materials can be porous solid materials with adsorption properties, such as silica gel, zeolite, etc.

[0055] The specific workflow of using the acetone sample spraying device is described below:

[0056] Step 100: First, perform sample preparation:

[0057] The initial position of the sample cup is at both ends of the slide, and glass slide preheating devices are provided at both ends; the glass slide is installed and placed in the glass slide slot where the sample cup is located, and then the glass slide preheating device is started, and the glass slide preheating device preheats the sample cup and the glass slide on the sample cup. The advance preheating has the advantage of energy saving, and also ensures that the acetone vapor sprayed on the glass slide reacts quickly;

[0058] Step 200: Start manually pushing the sample cup on the slide to the sensing area below the nozzle. At this time, the glass slide sensor located in the center of the slide realizes sensing processing. The glass slide sensor transmits the incoming sample signal to the controller, and the controller then controls the sample loading device to perform heating processing; finally, the heating device starts to implement heating processing and realizes output at the nozzle accompanied by acetone vapor.

[0059] The above-mentioned controller, slide sensor and other electronic devices and internal control programs are not the protection technology of the embodiment of the utility model, and will not be described in detail.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it; ordinary technicians in this field can modify the technical solutions recorded in the aforementioned embodiments, or replace part or all of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. An acetone sample spraying device, characterized in that: It comprises a nozzle (10), a sample slot device (20), an acetone sample adding device (30), and a liquid volume measuring meter (40); The sample slot device (20) comprises a sample slot body (21), a sample cup (22), a glass slide slot, and a glass slide sensor (24); the bottom of the inner wall of the sample slot body (21) is a waste liquid collection chamber, and a slideway (23) is provided from one end to the other end of the inner wall of the sample slot body (21); a glass slide sensor (24) is provided in the middle of the slideway (23); a glass slide slot is provided inside the sample cup (22); the glass slide slot is used to install a glass slide; the middle position of the slideway where the glass slide sensor (24) is located corresponds to the position of the nozzle (10); The acetone sample adding device (30) comprises an acetone sample storage bottle (31), a sample adding device (32), a heating device (33), a feeding pipe (34), and a feeding pipe (35); the input end of the sample adding device (32) is connected to the acetone sample storage bottle (31) through the feeding pipe (34), and the output end of the sample adding device (32) is connected to the heating device (33) through the feeding pipe (35); and a nozzle (10) is provided at the end of the heating device (33); The liquid volume meter (40) is arranged at the sample adding device (32), and the liquid volume meter (40) is used to measure the liquid volume of the acetone solution sucked in by the sample adding.

2. The acetone sample adding spraying device as claimed in claim 1, characterized in that, The heating device (33) comprises a rectangular parallelepiped heating body, a heating cavity (331) located inside the heating body, and a gas transmission cavity (332) connected to the heating cavity; The heating cavity (331) is vertically extended from one end of the heating body to the other end, the top of the heating cavity (331) is connected to the material delivery pipe (35), and the bottom of the heating cavity is a solution buffer accommodating groove (333) with a V-shaped cross-section; the gas delivery cavity (332) is horizontally extended along the heating body, and the extension direction of the gas delivery cavity (332) is perpendicular to the extension direction of the heating cavity; The height of the connection between the gas delivery cavity (332) and the heating cavity (331) is higher than the solution buffer accommodating groove (333) at the bottom of the heating cavity.

3. The acetone sample adding spraying device as claimed in claim 2, characterized in that, The heating body is an aluminum alloy structure; the top upper edge located on the left side of the gas transmission cavity (332) protrudes from the connection with the heating cavity (331), and is provided with a curved pipe edge portion extending downward.

4. The acetone sample adding spraying device as claimed in claim 3, characterized in that, A gas delivery branch pipeline cavity (334) extending vertically downward from the heating body is provided at the middle position of the gas delivery cavity; a nozzle (10) is connected to the end of the gas delivery branch pipeline cavity (334).

5. The acetone sample adding spraying device as claimed in claim 4, characterized in that, The end of the gas transmission branch pipeline cavity (334) is detachably connected to the nozzle (10).

6. The acetone sample adding spraying device as claimed in claim 5, characterized in that, Glass slide preheating and heating devices are arranged on the inner wall of the sample slot body (21) at both ends of the slide; the glass slide preheating and heating devices are used to preheat the sample cup (22) and the glass slide on the sample cup (22).

7. The acetone sample adding spraying device as claimed in claim 6, characterized in that: The slide preheating heating device and the heating body are both electric heating devices; the slide is a linear slide or an elliptical slide.

8. The acetone sample adding spraying device as claimed in claim 7, characterized in that, The interior of the nozzle (10) is coated with an anti-corrosion coating.

9. The acetone sample adding spraying device as claimed in claim 8, characterized in that, An acetone adsorption layer (25) is also provided at the bottom of the inner wall of the sample slot body (21); the acetone adsorption layer (25) is used to quickly adsorb acetone vapor sprayed into the waste liquid collection chamber.

10. The acetone sample adding spraying device according to claim 9, characterized in that: The acetone adsorption layer (25) is an activated carbon layer or a porous zeolite layer.

Images