A molten salt pipette gun with heating and insulation functions

Abstract

The utility model discloses a molten salt pipette with heating and heat preservation function relates to the biological experiment equipment field. The molten salt pipette, through the air heat shield barrier formed in the heating cavity and the temperature control mechanism of setting on the surface of the gun pipe, first, the operator presets target temperature through the temperature controller, and the temperature controller starts the heating wire that winds on the outer wall of the gun pipe immediately, and the heat generated by the heating wire is conducted to the internal molten salt liquid through the metal gun pipe, secondly, the temperature sensor of setting on the inside wall of the gun pipe monitors the molten salt liquid temperature in real time, and the data is fed back to the temperature controller and is adjusted, and simultaneously, the air heat shield barrier formed in the heating cavity, the outer covering heat preservation layer make the molten salt liquid in the gun pipe keep the set temperature in the whole process in the process of pipetting, reduce the heat loss rate, thereby effectively reduce the heat loss rate, significantly improve the pipetting efficiency of molten salt, avoid the problem caused by temperature out of control.

Description

Technical Field

[0001] This utility model relates to the field of biological experimental equipment, specifically a molten salt pipette with heating and heat preservation functions. Background Technology

[0002] A pipette is a type of liquid pipette commonly used in laboratories for transferring small or minute amounts of liquids. Compared to simpler pipettes, it offers higher accuracy and significantly reduces experimental errors. Especially for experiments with high precision requirements, pipettes are indispensable, and some analytical equipment requires their use. Currently available pipettes are only suitable for pipetting liquids at room temperature. However, temperature has a significant impact on the state of liquids, especially high-temperature liquids, thus affecting experimental errors.

[0003] Utility model patent CN209237985U discloses a pipette with a heat-insulating function, including a pipette body and a pipette head detachably connected to the pipette body. The pipette body contains a barrel, with both ends of the barrel extending out of a cavity. A push handle is provided at one end of the barrel. A heat-insulating sleeve is wrapped around the pipette body, and heat-insulating cotton is placed inside the heat-insulating sleeve. This utility model maintains a constant internal temperature by using a heat-insulating sleeve to prevent temperature changes and isolate the pipette from the outside air.

[0004] However, this pipetting gun only achieves basic heat preservation and cannot actively control the temperature. It cannot accurately heat and maintain the preset temperature of the liquid in the barrel. At the same time, the barrel outlet does not have an integrated one-way valve structure, which may cause the liquid to leak due to gravity or pressure difference when not in pipetting operations. Utility Model Content

[0005] This invention provides a molten salt pipette with heating and heat preservation functions to solve the problem that the existing pipettes only achieve basic heat preservation and cannot actively control the temperature. They cannot accurately heat and maintain the preset temperature of the liquid in the pipette tube. At the same time, the pipette tube outlet does not integrate a one-way valve structure, which may cause the liquid to leak due to gravity or pressure difference when not in pipetting operations.

[0006] This utility model provides the following technical solution:

[0007] A molten salt pipette with heating and heat preservation function includes:

[0008] A gun barrel, wherein a liquid chamber is provided inside the gun barrel, and a liquid extraction port communicating with the liquid chamber is provided on one side of the gun barrel;

[0009] A connecting tube is provided, wherein the gun barrel is detachably connected to the connecting tube via a liquid extraction port;

[0010] An outer casing disposed on the outside of the barrel, wherein a heating chamber is formed between the inner wall of the outer casing and the outer wall of the barrel;

[0011] A temperature control mechanism disposed on the surface of the gun barrel, the temperature control mechanism including a heating wire, a temperature controller and a temperature sensor;

[0012] An outlet is provided on one side of the connecting pipe, and a protective mechanism is provided on one side of the outlet. The protective mechanism includes a baffle, a connecting rod, a spring, a limiting tube, and a bracket.

[0013] Optionally, the interior of the heating chamber is filled with thermally conductive silicone oil.

[0014] Optionally, the heating wire is disposed on the surface of the gun barrel, and a temperature controller is electrically connected to one side of the heating wire via a power line, and a temperature sensor is electrically connected to one side of the temperature controller via a power line.

[0015] Optionally, the baffle is disposed on one side of the liquid outlet, a connecting rod is fixedly connected to one side of the baffle, a spring is sleeved on the surface of the connecting rod, a limit tube is connected through one end of the connecting rod, and three sets of supports are evenly distributed on the surface of the limit tube.

[0016] Optionally, the heating wire is located inside the heating chamber, the temperature controller is located on one side of the housing, and the temperature sensor is located on the inner wall of the barrel.

[0017] Optionally, the surface of the outer shell is provided with a heat insulation layer, the heat insulation layer being made of polyvinylidene fluoride.

[0018] Optionally, an observation window is provided on the surface of the barrel, the observation window is connected through the outer shell and the insulation layer, and the surface of the observation window is provided with scale lines.

[0019] Optionally, the three sets of brackets are fixedly connected to the inner wall of the connecting pipe, and the diameter of the baffle is larger than the diameter of the liquid outlet and smaller than the inner diameter of the connecting pipe.

[0020] Optionally, the connecting pipe is threaded to one side of the gun barrel, and a gun head is threaded to one side of the connecting pipe, with a filter element disposed inside the gun head.

[0021] Optionally, a piston is slidably connected inside the barrel, a push rod is fixedly connected to one side of the piston, and a handle is fixedly connected to one end of the push rod.

[0022] Compared with the prior art, the present invention has at least the following beneficial effects:

[0023] 1. This molten salt pipette with heating and heat preservation functions utilizes an air insulation barrier formed within the heating chamber and a temperature control mechanism located on the surface of the barrel. First, the operator presets the target temperature using the temperature controller, which then activates the heating wire wound around the outer wall of the barrel. The heat generated by the heating wire is conducted through the metal barrel to the molten salt inside. Second, a temperature sensor located on the inner wall of the barrel monitors the temperature of the molten salt in real time and feeds the data back to the temperature controller for adjustment. Simultaneously, the heating chamber is covered with an insulation layer, which, together with the air insulation barrier formed by the dual-chamber structure, ensures that the molten salt inside the barrel maintains the set temperature throughout the pipetting process, reducing the heat loss rate. This effectively reduces the heat loss rate, significantly improves the pipetting efficiency of molten salt, and avoids problems caused by temperature runaway.

[0024] 2. This molten salt pipette with heating and heat preservation function uses a protective mechanism on one side of the outlet. During operation, the connecting tube is first disconnected, and high-temperature molten salt is directly drawn through the push rod. After adding the liquid, the connecting tube and the nozzle are screwed tightly together. In the non-piping state, the spring tension drives the baffle to fit tightly against the outlet, forming a physical seal to prevent leakage. When the push rod is pushed, the pressure of the molten salt overcomes the spring resistance and pushes the baffle forward, forming a liquid channel with a certain gap to complete the discharge of the molten salt. Thus, the action of the baffle and the spring forms a one-way valve-like function, avoiding leakage problems that may occur due to gravity or pressure difference when the liquid is not being pipetted. At the same time, the baffle effectively isolates the external environment and reduces heat loss. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a cross-sectional view of the present invention and a structural schematic diagram of the dual-cavity structure;

[0027] Figure 3 This is a schematic diagram of the temperature control mechanism of this utility model;

[0028] Figure 4 This is a cross-sectional view of the connecting pipe and a schematic diagram of the protective mechanism of this utility model.

[0029] In the diagram: 1. Barrel; 2. Connecting tube; 3. Outer shell; 4. Dual-chamber structure; 401. Heating chamber; 402. Liquid chamber; 5. Temperature control mechanism; 501. Heating wire; 502. Temperature controller; 503. Temperature sensor; 6. Liquid outlet; 7. Protective mechanism; 701. Baffle; 702. Connecting rod; 703. Spring; 704. Limiting tube; 705. Bracket; 8. Insulation layer; 9. Observation window; 10. Gun head; 11. Filter element; 12. Piston; 13. Push rod; 14. Handle. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] like Figures 1 to 4 As shown, this utility model provides a molten salt pipette with heating and heat preservation functions, comprising: a barrel 1, the inside of which is provided with a liquid chamber 402, and a suction port communicating with the liquid chamber 402 on one side of the barrel 1; a connecting pipe 2, the barrel 1 being detachably connected to the connecting pipe 2 through the suction port; a housing 3 disposed on the outside of the barrel 1, the inner wall of the housing 3 and the outer wall of the barrel 1 forming a heating chamber 401; a temperature control mechanism 5 disposed on the surface of the barrel 1, the temperature control mechanism 5 including a heating wire 501, a temperature controller 502 and a temperature sensor 503; a liquid outlet 6 disposed on one side of the connecting pipe 2, and a protective mechanism 7 disposed on one side of the liquid outlet 6, the protective mechanism 7 including a baffle 701, a connecting rod 702, a spring 703, a limiting tube 704 and a bracket 705. Optionally, the heating chamber 401 is filled with thermally conductive silicone oil.

[0032] First, the operator presets the target temperature through the temperature controller 502. The temperature controller 502 then activates the heating wire 501 wrapped around the outer wall of the barrel 1. The heat generated by the heating wire 501 is conducted to the molten salt inside the metal barrel 1. Second, the temperature sensor 503 set on the inner wall of the barrel 1 monitors the temperature of the molten salt in real time and feeds the data back to the temperature controller 502 for adjustment.

[0033] In this implementation scheme, the connecting pipe 2 is first disconnected to expose the extraction port. High-temperature molten salt is then directly extracted through the extraction port. After the liquid is added, the connecting pipe 2 is screwed tightly shut. In the non-transferring state, the tension of the spring 703 drives the baffle 701 to tightly fit against the outlet 6, forming a physical seal to prevent leakage. When liquid is discharged, the pressure of the molten salt overcomes the resistance of the spring 703, pushing the baffle 701 forward to form a liquid channel with a certain gap, thus completing the discharge of the molten salt.

[0034] In summary, this molten salt pipetting gun with heating and heat preservation function, through the temperature control mechanism 5 set on the surface of the barrel 1 and the protective mechanism 7 set on one side of the outlet 6, combined with the air heat insulation barrier formed in the heating chamber 401 of the dual-chamber structure 4, ensures that the molten salt in the barrel 1 maintains the set temperature throughout the pipetting process, reducing the heat loss rate and significantly improving the pipetting efficiency of molten salt. It also avoids problems caused by temperature runaway. At the same time, the protective mechanism 7 at the outlet of the barrel 1 prevents leakage problems that may occur due to gravity or pressure difference when the liquid is not in the pipetting operation. In addition, the baffle 701 effectively isolates the external environment and reduces heat loss.

[0035] Through the air insulation barrier formed inside the heating chamber 401 and the temperature control mechanism 5 set on the surface of the barrel 1, the operator first presets the target temperature through the temperature controller 502. The temperature controller 502 then activates the heating wire 501 wrapped around the outer wall of the barrel 1. The heat generated by the heating wire 501 is conducted to the molten salt inside through the metal barrel 1. Secondly, the temperature sensor 503 set on the inner wall of the barrel 1 monitors the temperature of the molten salt in real time and feeds the data back to the temperature controller 502 for adjustment. At the same time, the heating chamber 401 is covered with an insulation layer 8, which, together with the air insulation barrier formed by the double-chamber structure 4, keeps the molten salt in the barrel 1 at the set temperature throughout the liquid transfer process, reducing the heat loss rate. This effectively reduces the heat loss rate, significantly improves the liquid transfer efficiency of the molten salt, and avoids problems caused by temperature runaway.

[0036] By using the protective mechanism 7 located on one side of the outlet 6, the connecting pipe 2 is first disconnected during operation, and the high-temperature molten salt is directly drawn. After the liquid is added, the connecting pipe 2 and the nozzle 10 are screwed together in sequence. In the non-transferring state, the tension of the spring 703 drives the baffle 701 to fit tightly against the outlet 6, forming a physical seal to prevent leakage. When the liquid is discharged, the pressure of the molten salt overcomes the resistance of the spring 703 and pushes the baffle 701 forward, forming a liquid channel with a certain gap to complete the discharge of the molten salt. Thus, the action of the baffle 701 and the spring 703 forms a function similar to a one-way valve, avoiding leakage problems that may occur due to gravity or pressure difference when the liquid is not being transferred. At the same time, the baffle 701 effectively isolates the outside world and reduces heat loss.

[0037] In this embodiment, the heating chamber 401 and the liquid chamber 402 form a dual-chamber structure 4. An air layer is formed inside the heating chamber 401 in the dual-chamber structure 4. The air layer forms a physical heat insulation barrier. Combined with the multiple heat-insulating designs of the outer insulation material, the temperature fluctuation of the molten salt in the gun barrel 1 is controlled within a low range throughout the transportation process, which reduces heat loss compared to the traditional single-chamber structure.

[0038] Specifically, a heating wire 501 is disposed on the surface of the barrel 1, and a temperature controller 502 is electrically connected to one side of the heating wire 501 via a power line. A temperature sensor 503 is electrically connected to one side of the temperature controller 502 via a power line.

[0039] In this implementation scheme, firstly, the operator presets the target temperature through the temperature controller 502, and then the temperature controller 502 activates the heating wire 501 wrapped around the outer wall of the barrel 1. The heat generated by the heating wire 501 is conducted to the internal molten salt through the metal barrel 1. Secondly, the temperature sensor 503 set on the inner wall of the barrel 1 monitors the temperature of the molten salt in real time and feeds the data back to the temperature controller 502 for adjustment.

[0040] Specifically, a baffle 701 is disposed on one side of the liquid outlet 6, a connecting rod 702 is fixedly connected to one side of the baffle 701, a spring 703 is sleeved on the surface of the connecting rod 702, and a limit tube 704 is connected through one end of the connecting rod 702. Three sets of brackets 705 are evenly distributed on the surface of the limit tube 704.

[0041] Specifically, the heating wire 501 is located inside the heating chamber 401, the temperature controller 502 is located on one side of the housing 3, and the temperature sensor 503 is located on the inner wall of the barrel 1.

[0042] Specifically, the surface of the outer shell 3 is provided with a heat insulation layer 8, which is made of polyvinylidene fluoride. The surface of the gun barrel 1 is provided with an observation window 9, which is connected to the outer shell 3 and the heat insulation layer 8. The surface of the observation window 9 is provided with scale lines.

[0043] In this embodiment, the polyvinylidene fluoride insulation layer 8 wraps around the surface of the outer shell 3, effectively reducing heat loss. The observation window 9 penetrates the outer shell 3 and the insulation layer 8, and its surface scale lines can clearly display the liquid transfer volume, realizing visual monitoring of the operation process.

[0044] Specifically, three sets of brackets 705 are fixedly connected to the inner wall of the connecting pipe 2. The diameter of the baffle 701 is larger than the diameter of the outlet 6 and smaller than the inner diameter of the connecting pipe 2. The connecting pipe 2 is threaded to one side of the gun barrel 1. A gun head 10 is threaded to one side of the connecting pipe 2. A filter element 11 is installed inside the gun head 10. A piston 12 is slidably connected inside the gun barrel 1. A push rod 13 is fixedly connected to one side of the piston 12. A handle 14 is fixedly connected to one end of the push rod 13.

[0045] In this embodiment, the connecting pipe 2 forms a sealed interface with the gun barrel 1 and the gun head 10 through a threaded structure. The filter element 11 built into the connecting pipe 2 can trap impurities. Three sets of symmetrically distributed supports 705 ensure that the baffle 701 is centrally positioned inside the connecting pipe 2. The diameter of the baffle 701 is designed to be larger than the liquid outlet 6 but smaller than the inner diameter of the connecting pipe 2, which can prevent the molten salt liquid from flowing back and allow the fluid to form laminar flow through the gaps between the supports 705.

[0046] The model number of temperature sensor 503 is PT100; the above parameters and model can be selected according to the actual situation.

[0047] The workflow of this utility model's technical solution is as follows:

[0048] First, the operator presets the target temperature using the temperature controller 502. The temperature controller 502 then activates the heating wire 501 wrapped around the outer wall of the barrel 1. The heat generated by the heating wire 501 is conducted to the molten salt inside the metal barrel 1. Second, the temperature sensor 503, located on the inner wall of the barrel 1, monitors the temperature of the molten salt in real time and feeds the data back to the temperature controller 502 for adjustment. At the same time, the air insulation barrier formed in the heating chamber 401, covered with an insulation layer 8, ensures that the molten salt inside the barrel 1 maintains the set temperature throughout the liquid transfer process, reducing the heat loss rate.

[0049] During operation, first disconnect the connecting pipe 2, and directly draw the high-temperature molten salt liquid through the push rod 13. After the liquid is added, tighten the connecting pipe 2 and the nozzle 10 in sequence. In the non-fluid transfer state, the tension of the spring 703 drives the baffle 701 to fit tightly against the outlet 6, forming a physical seal to prevent leakage. When the push rod 13 is pushed, the pressure of the molten salt liquid overcomes the resistance of the spring 703 and pushes the baffle 701 forward, forming a liquid channel with a certain gap to complete the discharge of the molten salt liquid.

[0050] In summary, this molten salt pipetting gun with heating and heat preservation functions, through the temperature control mechanism 5 set on the surface of the barrel 1 and the protective mechanism 7 set on one side of the outlet 6, and through the air heat insulation barrier formed in the heating chamber 401 and the outer heat insulation layer 8, keeps the molten salt in the barrel 1 at the set temperature throughout the pipetting process, reducing the heat loss rate and significantly improving the pipetting efficiency of molten salt. It avoids problems caused by temperature runaway. At the same time, the protective mechanism 7 at the outlet of the barrel 1 prevents leakage problems that may occur due to gravity or pressure difference when the liquid is not in the pipetting operation. In addition, the baffle 701 effectively isolates the external environment and reduces heat loss.

[0051] It should be noted that, in this document, terms such as "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0052] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A molten salt pipette with a heating and temperature maintaining function, characterized in that, include: A gun barrel, wherein a liquid chamber is provided inside the gun barrel, and a liquid extraction port communicating with the liquid chamber is provided on one side of the gun barrel; A connecting tube is provided, wherein the gun barrel is detachably connected to the connecting tube via a liquid extraction port; An outer casing disposed on the outside of the barrel, wherein a heating chamber is formed between the inner wall of the outer casing and the outer wall of the barrel; A temperature control mechanism disposed on the surface of the gun barrel, the temperature control mechanism including a heating wire, a temperature controller and a temperature sensor; An outlet is provided on one side of the connecting pipe, and a protective mechanism is provided on one side of the outlet. The protective mechanism includes a baffle, a connecting rod, a spring, a limiting tube, and a bracket.

2. The molten salt pipette gun with heating and temperature maintaining function according to claim 1, characterized in that, The interior of the heating chamber is filled with thermally conductive silicone oil.

3. The molten salt pipette with heating and heat preservation function according to claim 1, characterized in that, The heating wire is disposed on the surface of the gun barrel. A temperature controller is electrically connected to one side of the heating wire via a power cord, and a temperature sensor is electrically connected to one side of the temperature controller via a power cord.

4. The molten salt pipette with heating and heat preservation function according to claim 1, characterized in that, The baffle is located on one side of the liquid outlet. A connecting rod is fixedly connected to one side of the baffle. A spring is sleeved on the surface of the connecting rod. One end of the connecting rod is connected through a limiting tube. Three sets of supports are evenly distributed on the surface of the limiting tube.

5. The molten salt pipette gun with heating and temperature maintaining function according to claim 1, characterized in that, The heating wire is located inside the heating chamber, the temperature controller is located on one side of the outer casing, and the temperature sensor is located on the inner wall of the barrel.

6. The molten salt pipette with heating and heat preservation function according to claim 1, characterized in that, The surface of the outer shell is provided with a heat insulation layer, and the heat insulation layer is made of polyvinylidene fluoride.

7. The molten salt pipette gun with heating and temperature maintaining function according to claim 1, characterized in that, An observation window is provided on the surface of the gun barrel. The observation window is connected through the outer shell and the insulation layer. The surface of the observation window is provided with scale lines.

8. The molten salt pipette gun with heating and temperature maintaining function according to claim 1, characterized in that, The three sets of brackets are fixedly connected to the inner wall of the connecting pipe. The diameter of the baffle is larger than the diameter of the liquid outlet, and the diameter of the baffle is smaller than the inner diameter of the connecting pipe.

9. The molten salt pipette with heating and heat preservation function according to claim 1, characterized in that, The connecting pipe is threaded to one side of the gun barrel, and the gun head is threaded to one side of the connecting pipe. A filter element is installed inside the gun head.

10. The molten salt pipette with heating and heat preservation function according to claim 1, characterized in that, A piston is slidably connected inside the barrel, a push rod is fixedly connected to one side of the piston, and a handle is fixedly connected to one end of the push rod.

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