A phosphorus oxychloride filling device

Abstract

The utility model discloses a kind of phosphorus oxychloride filling devices, including body mechanism and filling mechanism, the body mechanism includes storage tank, liquid inlet assembly and gas protection assembly installed on the top wallboard of storage tank and liquid outlet assembly installed on the bottom wallboard of storage tank, the gas protection assembly is used to provide protective gas and the pressure required by liquid outlet assembly in storage tank;The filling mechanism includes infusion assembly installed in the lower end of liquid outlet assembly, filling sealing assembly and lifting assembly installed in the bottom of infusion assembly.The utility model is provided with sealing assembly, when filling container, lifting assembly drives infusion assembly to move, so as to fill gun is inserted into container, while sealing assembly will abut on the outside wall of container bottle mouth, under the action of sealing cover and sealing ring, so that filling port and container connection place is always in sealed state, ensure that air cannot contact with phosphorus oxychloride, avoid the invasion of moisture, to prevent phosphorus oxychloride deterioration failure.

Description

Technical Field

[0001] This utility model belongs to the field of phosphorus oxychloride dispensing technology, specifically relating to a phosphorus oxychloride dispensing device. Background Technology

[0002] Phosphorus oxychloride is an important phosphorus source and chlorinating agent commonly used in semiconductor doping, photovoltaic cell fabrication, and organic synthesis. It is a highly corrosive, extremely toxic, and easily hydrolyzed hazardous chemical. It reacts violently with water, producing large amounts of acid mist and heat, posing a serious threat to operator safety and the environment.

[0003] Traditional phosphorus oxychloride filling processes often involve simple plug-in connections between the filling port and the container, which makes it difficult to ensure complete isolation from air. Moisture in the air can easily penetrate, causing phosphorus oxychloride to deteriorate and become ineffective or produce byproducts, thus affecting process quality.

[0004] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a phosphorus oxychloride dispensing device that can solve the problem of phosphorus oxychloride deterioration and failure caused by air intrusion due to insufficient sealing at the connection between the dispensing port and the container during phosphorus oxychloride dispensing.

[0006] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0007] A phosphorus oxychloride dispensing device includes a main body and a dispensing mechanism. The main body includes a storage tank, an inlet assembly and a gas protection assembly mounted on the top wall of the storage tank, and an outlet assembly mounted on the bottom wall of the storage tank. The gas protection assembly provides protective gas to the storage tank and the pressure required for the outlet assembly. The dispensing mechanism includes a delivery assembly mounted at the lower end of the outlet assembly, a dispensing sealing assembly mounted at the bottom of the delivery assembly, and a lifting assembly. The dispensing sealing assembly includes a sealing cover mounted at the bottom of the delivery assembly, and a sealing ring is installed at the bottom of the sealing cover. The lifting assembly drives the delivery assembly to extend into the container while the sealing cover and sealing ring seal the outer wall of the container opening.

[0008] In one or more embodiments of the present invention, the liquid inlet assembly includes a liquid inlet pipe fixed to the liquid inlet of the top wall panel of the storage tank and a liquid inlet valve installed on the liquid inlet pipe.

[0009] In one or more embodiments of the present invention, the gas protection assembly includes a gas supply pipe fixed to the gas inlet of the top wall panel of the storage tank, an inlet valve and a pressure regulating valve installed sequentially on the gas supply pipe.

[0010] In one or more embodiments of this utility model, the liquid discharge assembly includes a liquid discharge pipe fixed to the liquid discharge port on the bottom wall panel of the storage tank, a liquid discharge valve and a flow regulating valve installed sequentially on the liquid discharge pipe.

[0011] In one or more embodiments of the present invention, the infusion assembly includes a reducing tube installed at the lower end of the outlet tube, a telescopic tube installed at the lower end of the reducing tube, and a dispensing gun installed at the lower end of the telescopic tube.

[0012] In one or more embodiments of this utility model, the sealing cover is installed on the side wall of the lower end of the telescopic tube, and the sealing cover is configured as a conical structure with a smaller top and a larger bottom.

[0013] In one or more embodiments of this utility model, an annular groove is provided on the lower side wall of the sealing cover, and the sealing ring is installed in the annular groove.

[0014] In one or more embodiments of this utility model, the sealing cover is made of transparent polycarbonate material, and the sealing ring is made of corrosion-resistant fluororubber material.

[0015] In one or more embodiments of the present invention, the lifting assembly includes a first mounting plate fixed to the side wall of the variable diameter pipe, a second mounting plate fixed to the lower end side wall of the telescopic pipe, a hydraulic cylinder and a guide rod mounted between the first mounting plate and the second mounting plate.

[0016] In one or more embodiments of this utility model, the lower end of the hydraulic cylinder piston rod is fixed to the second mounting plate, the lower end of the guide rod is fixed to the second mounting plate, and the upper end of the guide rod is slidably connected to the first mounting plate in a through manner.

[0017] Compared with the prior art, this utility model is equipped with a sealing component. When filling the container, the lifting component drives the infusion component to move so that the dispensing gun can be inserted into the container. At the same time, the sealing component will abut against the outer wall of the container mouth. Under the action of the sealing cover and sealing ring, the connection between the dispensing port and the container is always sealed, ensuring that air does not come into contact with phosphorus oxychloride and preventing moisture intrusion. This prevents phosphorus oxychloride from deteriorating and becoming ineffective during the filling process, thus improving the process quality. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a front view of a phosphorus oxychloride dispensing device according to an embodiment of the present invention;

[0020] Figure 2 This is a cross-sectional view of a phosphorus oxychloride dispensing device according to an embodiment of the present invention;

[0021] Figure 3 This is a cross-sectional view of a phosphorus oxychloride dispensing device according to an embodiment of the present invention;

[0022] Figure 4 This utility model Figure 3 A schematic diagram at point A in the middle;

[0023] Figure 5 This utility model Figure 3 A schematic diagram at point B in the middle;

[0024] Figure 6 This utility model Figure 5 A schematic diagram at point C.

[0025] Explanation of key figure labels:

[0026] 1-Main body, 11-Storage tank, 12-Inlet pipe, 13-Inlet valve, 14-Outlet pipe, 15-Outlet valve, 16-Flow regulating valve, 17-Air supply pipe, 18-Air inlet valve, 19-Pressure regulating valve, 110-Buffer box, 111-Outlet hole, 2-Filling mechanism, 21-Reducing pipe, 22-Telescopic pipe, 23-Filling gun, 24-Sealing cover, 25-Annular groove, 26-Sealing ring, 27-First mounting plate, 28-Second mounting plate, 29-Hydraulic cylinder, 210-Guide rod. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0028] like Figures 1-6 As shown, a phosphorus oxychloride dispensing device according to one embodiment of the present invention includes a main body mechanism 1 and a dispensing mechanism 2. The main body mechanism 1 includes a storage tank 11, a liquid inlet assembly and a gas protection assembly installed on the top wall of the storage tank 11, and a liquid outlet assembly installed on the bottom wall of the storage tank 11. The gas protection assembly is used to provide protective gas to the storage tank 11 and the pressure required by the liquid outlet assembly. The dispensing mechanism 2 includes a delivery assembly installed at the lower end of the liquid outlet assembly, a dispensing sealing assembly and a lifting assembly installed at the bottom of the delivery assembly. The dispensing sealing assembly includes a sealing cover 24 installed at the bottom of the delivery assembly, and a sealing ring 26 is installed at the bottom of the sealing cover 24. The lifting assembly is used to drive the delivery assembly to extend into the container while the sealing cover 24 and the sealing ring 26 seal the outer wall of the container mouth.

[0029] When using this phosphorus oxychloride filling device, the prepared phosphorus oxychloride is first transported to the storage tank 11 in a closed manner through the liquid inlet assembly. At the same time, the storage tank 11 is filled with inert gas under the action of the gas protection assembly, effectively preventing the entry of outside air. When it is necessary to fill the container with phosphorus oxychloride, the container is placed directly below the liquid inlet assembly. Then, the liquid inlet assembly is driven downward by the lifting assembly, so that the lower end of the liquid inlet assembly extends into the container mouth. The sealing cover 24 of the sealing assembly and the annular groove 25 at its bottom can then abut against the outer wall of the container mouth. Thus, under the sealing effect of the sealing cover 24 and the annular groove 25, the outside air is isolated from the inside of the container. At the same time, under the action of the lifting assembly, the sealing assembly and the container are in stable contact, so that the connection between the filling port and the container is always in a sealed state during the filling process. This ensures that air does not come into contact with phosphorus oxychloride and avoids the intrusion of moisture in the air, thereby preventing phosphorus oxychloride from deteriorating and becoming ineffective during the filling process and improving the process quality. Furthermore, during refueling, the refueling pressure can be adjusted by regulating the pressure of the nitrogen gas supplied to the storage tank 11.

[0030] like Figures 1-4 As shown, the liquid inlet assembly includes a liquid inlet pipe 12 fixed to the liquid inlet of the top wall panel of the storage tank 11 and a liquid inlet valve 13 installed on the liquid inlet pipe 12. The produced phosphorus oxychloride is transported to the storage tank 11 through the liquid inlet pipe 12, and the liquid inlet valve 13 is used to control the opening and closing of the liquid inlet pipe 12.

[0031] like Figure 3 and Figure 4As shown, in order to ensure that phosphorus oxychloride delivered to the storage tank 11 through the inlet pipe 12 does not splash inside, a buffer box 110 is fixedly connected to the inner side wall of the top wall panel of the storage tank 11 below the inlet. Multiple outlet holes 111 are provided on the bottom wall panel of the buffer box 110. Thus, the phosphorus oxychloride delivered to the storage tank 11 through the inlet pipe 12 is buffered by the buffer box 110 and discharged through the outlet holes 111, effectively avoiding splashing.

[0032] like Figures 1-3 As shown, the gas protection assembly includes a gas supply pipe 17 fixed to the gas inlet of the top wall panel of the storage tank 11, an inlet valve 18 and a pressure regulating valve 19 installed sequentially on the gas supply pipe 17. The gas supply pipe 17 is connected to a pipeline for conveying dry and clean inert gas so as to deliver nitrogen into the storage tank 11. The pressure regulating valve 19 enables precise control of the gas pressure delivered into the storage tank 11.

[0033] like Figures 1-3 as well as Figure 5 As shown, the liquid dispensing assembly includes a liquid dispensing pipe 14 fixed to the liquid dispensing port on the bottom wall of the storage tank 11, a liquid dispensing valve 15 and a flow regulating valve 16 sequentially installed on the liquid dispensing pipe 14. When the container is filled, phosphorus oxychloride in the storage tank 11 is output through the liquid dispensing pipe 14, and the flow regulating valve 16 is used to precisely control the flow rate of phosphorus oxychloride during filling.

[0034] like Figure 5 and Figure 6 As shown, the infusion assembly includes a reducing tube 21 installed at the lower end of the outlet tube 14, a telescopic tube 22 installed at the lower end of the reducing tube 21, and a dispensing gun 23 installed at the lower end of the telescopic tube 22. Phosphorus oxychloride delivered by the outlet tube 14 is delivered through the reducing tube 21 into the telescopic tube 22, and then dispensed into the container through the dispensing gun 23. The telescopic tube 22 allows the dispensing gun 23 to easily engage with and disengage from the container before and after dispensing.

[0035] like Figure 5 and Figure 6 As shown, the sealing cover 24 is installed on the side wall of the lower end of the telescopic tube 22. The sealing cover 24 is set as a conical structure with a smaller top and a larger bottom so that the sealing cover 24 can easily cover the outer side wall of the container mouth.

[0036] like Figure 5 and Figure 6 As shown, an annular groove 25 is provided on the lower side wall of the sealing cover 24, and the sealing ring 26 is installed in the annular groove 25. When the lower end of the sealing cover 24 abuts against the outer side wall of the container bottle mouth, the connection between the liquid injection port and the container is sealed under the action of the sealing ring 26.

[0037] Preferably, the sealing cover 24 is made of transparent polycarbonate material, and the sealing ring 26 is made of corrosion-resistant fluororubber material. This allows the filling process to be observed through the sealing cover 24 when it is placed over the container, and the corrosion resistance of the sealing ring 26 ensures that it will not be corroded by phosphorus oxychloride during use.

[0038] like Figure 3 and Figure 5 As shown, the lifting assembly includes a first mounting plate 27 fixed to the side wall of the reducing pipe 21, a second mounting plate 28 fixed to the lower side wall of the telescopic pipe 22, a hydraulic cylinder 29 and a guide rod 210 installed between the first mounting plate 27 and the second mounting plate 28.

[0039] like Figure 3 and Figure 5 As shown, the lower end of the piston rod of the hydraulic cylinder 29 is fixed to the second mounting plate 28, and the lower end of the guide rod 210 is fixed to the second mounting plate 28. The upper end of the guide rod 210 is slidably connected to the first mounting plate 27 through the guide rod. When the piston rod is driven to extend and retract by the hydraulic cylinder 29, the piston rod can drive the second mounting plate 28 to move up and down, so that the second mounting plate 28 can stretch the telescopic tube 22 to achieve extension and retraction. At the same time, the guide rod 210 guides the hydraulic cylinder 29 to drive the telescopic tube 22 to extend and retract linearly, so that the dispensing gun 23 can accurately dock with the bottle mouth of the container at its bottom.

[0040] It should be noted that, since the components provided by this device are used to transport highly corrosive phosphorus oxychloride, all components that come into contact with phosphorus oxychloride are made of materials resistant to phosphorus oxychloride corrosion.

[0041] In use, the prepared phosphorus oxychloride is first transported to the storage tank 11 in a closed manner through the inlet pipe 12. Simultaneously, inert gas is introduced into the storage tank 11 through the gas supply pipe 17 to ensure the tank is filled with inert gas, effectively preventing the entry of outside air. When phosphorus oxychloride needs to be added to the container, the container is placed directly below the infusion assembly. Then, the piston rod of the hydraulic cylinder 29 moves downward, causing the telescopic tube 22 to extend downward, allowing the lower end of the dispensing gun 23 to enter the container mouth. The sealing cover 24 and the annular groove 25 at its bottom of the sealing assembly can abut against the outer wall of the container mouth, thus isolating the outside air from the container interior under the sealing effect of the sealing cover 24 and the annular groove 25. Simultaneously, the lifting assembly ensures stable contact between the sealing assembly and the container, keeping the connection between the filling port and the container sealed during filling. This prevents air from contacting phosphorus oxychloride, avoids the intrusion of moisture in the air, and prevents phosphorus oxychloride from deteriorating and becoming ineffective during filling, improving process quality. During filling, the outlet valve 15 and the flow regulating valve 16 are opened, allowing phosphorus oxychloride to enter the container through the filling gun 23. The filling pressure can be adjusted by regulating the pressure of the nitrogen gas supplied to the storage tank 11. After filling, the outlet valve 15 and the flow regulating valve 16 are closed, and then the piston rod is retracted by the hydraulic cylinder 29, allowing the filling gun 23 and the sealing cover 24 to detach from the container.

[0042] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0043] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A phosphorus oxychloride dispensing device, characterized in that, include: The main body includes a storage tank, a liquid inlet assembly and a gas protection assembly installed on the top wall panel of the storage tank, and a liquid outlet assembly installed on the bottom wall panel of the storage tank. The gas protection assembly is used to provide protective gas and the pressure required for the liquid outlet assembly to the storage tank. The dispensing mechanism includes an infusion assembly installed at the lower end of the dispensing assembly, a dispensing sealing assembly and a lifting assembly installed at the bottom of the infusion assembly. The dispensing sealing assembly includes a sealing cover installed at the bottom of the infusion assembly, and a sealing ring is installed at the bottom of the sealing cover. The lifting assembly is used to drive the infusion assembly to extend into the container while the sealing cover and the sealing ring are sealed on the outer wall of the container at the bottle opening.

2. The phosphorus oxychloride dosing device according to claim 1, characterized in that, The liquid inlet assembly includes a liquid inlet pipe fixed to the liquid inlet on the top wall panel of the storage tank and a liquid inlet valve installed on the liquid inlet pipe.

3. The phosphorus oxychloride dosing device according to claim 1, characterized in that, The gas protection assembly includes a gas supply pipe fixed to the gas inlet on the top wall panel of the storage tank, an inlet valve and a pressure regulating valve installed sequentially on the gas supply pipe.

4. The phosphorus oxychloride dosing device according to claim 1, characterized in that, The liquid discharge assembly includes a liquid discharge pipe fixed to the liquid discharge port on the bottom wall panel of the storage tank, a liquid discharge valve and a flow regulating valve installed sequentially on the liquid discharge pipe.

5. A phosphorus oxychloride dosing device according to claim 4, characterized in that, The infusion assembly includes a reducing tube installed at the lower end of the outlet tube, a telescopic tube installed at the lower end of the reducing tube, and a dispensing gun installed at the lower end of the telescopic tube.

6. The phosphorus oxychloride dosing device according to claim 5, characterized in that, The sealing cover is installed on the side wall at the lower end of the telescopic tube, and the sealing cover is configured as a conical structure with a smaller top and a larger bottom.

7. A phosphorus oxychloride dosing device according to claim 6, characterized in that, An annular groove is provided on the lower side wall of the sealing cover, and the sealing ring is installed in the annular groove.

8. A phosphorus oxychloride dosing device according to claim 7, characterized in that, The sealing cover is made of transparent polycarbonate material, and the sealing ring is made of corrosion-resistant fluororubber material.

9. A phosphorus oxychloride dosing device according to claim 8, characterized in that, The lifting assembly includes a first mounting plate fixed to the side wall of the reducing pipe, a second mounting plate fixed to the lower side wall of the telescopic pipe, a hydraulic cylinder and a guide rod installed between the first mounting plate and the second mounting plate.

10. A phosphorus oxychloride dosing device according to claim 9, characterized in that, The lower end of the hydraulic cylinder piston rod is fixed to the second mounting plate, the lower end of the guide rod is fixed to the second mounting plate, and the upper end of the guide rod is slidably connected to the first mounting plate through the cylinder.

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