Raw material barrel closed material pumping device

Abstract

The utility model discloses a kind of raw material barrel closed material extraction devices, including bucket pump, the suction end of bucket pump is connected with the material extraction pipe for inserting into raw material barrel, the discharge end of bucket pump is connected with discharge pipe;It further includes the protective tube of material extraction pipe outside, the lower end of the protective tube can be sealed with the spigot of raw material barrel Connection and can be detached, when the material extraction pipe is inserted into raw material barrel by spigot, the protective tube can be compressed and placed outside raw material barrel, when the material extraction pipe is extracted from raw material barrel, the protective tube can be lengthened and lower end can be wrapped in the lower end of material extraction pipe, breathing pipe is equipped on the protective tube. Dynamic closed environment formed by protective tube fundamentally solves the security and environmental hazards of residual liquid dripping on the outer wall of material extraction pipe, and the scheme does not depend on raw material barrel preset pipeline, and has strong universality, realizes the safe, environmentally-friendly material transfer.

Description

Technical Field

[0001] This utility model relates to the field of barrel pump technology, and in particular to a sealed material extraction device for raw material barrels. Background Technology

[0002] A drum pump, also known as a hand pump or transfer pump, is a device specifically designed for the safe and efficient extraction and transfer of liquids from standard metal or plastic drums. It is widely used in industries requiring the handling of large volumes of liquids, such as chemical, pharmaceutical, food, electroplating, coating, and laboratory applications, for transferring various chemicals, oils, solvents, and food ingredients.

[0003] Existing tank pumps typically consist of a pump head, a suction tube, a discharge tube, and a hand crank / handle. The suction tube is a long metal or plastic pipe inserted into the tank. By manually operating the crank, a piston inside the pump head moves, creating a pressure difference (vacuum suction and pressure) within the pump chamber. When the piston moves backward, it generates suction, drawing liquid from the tank through the suction tube and discharging it through the discharge tube, guiding the liquid to the target container. However, when the suction tube is removed from a tank full of liquid, a certain amount of liquid inevitably adheres to its outer wall. If this residual liquid drips or splashes, it can cause a series of serious safety, environmental, and economic hazards.

[0004] Another approach is to use a drum pump, but this requires a pre-installed extraction pipe inside the drum. The drum pump's inlet pipe can be seamlessly connected to the drum interface and the connected extraction pipe. After extraction, simply disconnect the connection; there's no need to remove the extraction pipe, thus avoiding the risk of leakage due to residual liquid on the outer wall of the extraction pipe. However, this method requires a pre-installed extraction pipe inside the drum, which means the raw material supplier must install the extraction pipe before loading the material. Currently, very few raw material suppliers can meet this requirement.

[0005] To address the aforementioned issues, existing technologies urgently need improvement. Utility Model Content

[0006] The technical problem to be solved by this utility model is to provide a closed material extraction device for raw material barrels, which solves the environmental and safety problems caused by the possible leakage of liquid remaining on the outer wall when the extraction tube is pulled out during the extraction of barrel materials.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A closed material extraction device for a raw material barrel includes a barrel pump, wherein the suction end of the barrel pump is connected to an extraction pipe for inserting into the raw material barrel, and the discharge end of the barrel pump is connected to a discharge pipe. Also includes: A protective tube is fitted over the material extraction tube. The lower end of the protective tube can be sealed to the inlet of the raw material barrel and can be disassembled. When the material extraction tube is inserted into the raw material barrel through the inlet, the protective tube can be compressed and placed outside the raw material barrel. When the material extraction tube is pulled out of the raw material barrel, the protective tube can be stretched and its lower end can wrap around the lower end of the material extraction tube. The protective tube is equipped with a breather tube.

[0008] A further technical solution is that the upper end face of the protective tube is provided with a sealing plate, and the middle part of the sealing plate is provided with a first through hole for the insertion of the material extraction tube. The inner edge of the first through hole is sealed and fixed with the outer wall of the material extraction tube.

[0009] A further technical solution is that the sealing plate has a second perforation for inserting a breathing tube, and the inner edge of the second perforation is sealed and fixed to the outer wall of the breathing tube.

[0010] A further technical solution is that the upper end of the protective tube is detachably connected to the sealing plate.

[0011] A further technical solution is that the upper end of the protective tube is provided with an internal thread, the sealing plate is provided with an external thread, and the protective tube and the sealing plate are fixed by a threaded connection.

[0012] A further technical solution is that the protective tube is configured as a corrugated pipe.

[0013] A further technical solution is that the protective tube is provided with an inner liner tube that can deform with the protective tube. The two ends of the inner liner tube are fixed to the inner wall of the protective tube, and the inner liner tube has a smooth inner surface.

[0014] A further technical solution is that the material extraction tube has a polished outer surface.

[0015] A further technical solution is that the lower end of the protective tube is connected to the inlet of the raw material barrel via a quick-release connector; The quick-release connector includes a male plug located at the lower end of the protective tube and a female plug located at the socket of the raw material barrel. A first shut-off valve is provided between the lower end of the protective tube and the male plug; A second shut-off valve is provided between the inlet of the raw material barrel and the female plug; Both the first and second shut-off valves allow the material extraction pipe to pass through after they are opened.

[0016] A further technical solution is that the first shut-off valve and the second shut-off valve are ball valves or gate valves.

[0017] The beneficial effects of adopting the above technical solution are as follows: The protective tube, made of a stretchable flexible material, is fitted over the outside of the extraction tube. Its lower end is designed with a structure that allows for quick sealing and disassembly with the raw material tank inlet. The core function of this protective tube is that it has two working modes: during liquid extraction, it is compressed and placed outside the tank, preventing liquid from adhering and allowing the extraction tube to penetrate deep into the tank; when the extraction is completed and before the extraction tube is separated from the raw material tank inlet, it is simultaneously stretched when the extraction tube is pulled out, so that its lower end can cover the lower end of the extraction tube, ultimately forming a movable sealed shield.

[0018] The dynamic sealed environment formed by the protective pipe fundamentally solves the safety and environmental hazards of residual liquid dripping from the outer wall of the extraction pipe. Moreover, this solution does not rely on pre-installed pipelines in the raw material tank, has strong versatility, and achieves safe and environmentally friendly material transfer. Attached Figure Description

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0020] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the raw material barrel in this utility model; Figure 3 This is a structural diagram of the utility model in use. Figure 1 ; Figure 4 This is a structural diagram of the utility model in use. Figure 2 . Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0022] In the description of this utility model, unless otherwise stated, the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0023] like Figures 1-4As shown, a closed material extraction device for a raw material drum 201 includes a drum pump 101. The suction end of the drum pump 101 is connected to an extraction pipe 103 for insertion into the raw material drum 201, and the discharge end of the drum pump 101 is connected to a discharge pipe 102. In use, the drum pump 101 acts as a power source, drawing raw materials into the pump chamber through the extraction pipe 103. When the piston moves forward, pressure is generated, thereby discharging the raw materials in the pump chamber through the discharge pipe 102.

[0024] Example 1: The sealed material extraction device for the raw material barrel 201 includes a protective tube 104, which is sleeved outside the extraction tube 103. The lower end of the protective tube 104 can be sealed and connected to the inlet of the raw material barrel 201 and can be disassembled. When the extraction tube 103 is inserted into the raw material barrel 201 through the inlet, the protective tube 104 can be compressed and placed outside the raw material barrel 201. When the extraction tube 103 is pulled out of the raw material barrel 201, the protective tube 104 can be stretched and its lower end can wrap around the lower end of the extraction tube 103. A breathing tube 106 is provided on the protective tube 104.

[0025] The protective tube 104 is fitted over the outside of the extraction tube 103 and is made of a stretchable flexible material. Its lower end is designed with a structure, such as a clamp or flange, that allows for quick sealing and disassembly of the connection to the raw material tank 201. The core function of the protective tube 104 is that it has two working modes: during liquid extraction, it is compressed and placed outside the tank, without obstructing the extraction tube 103 from reaching the bottom of the tank; after liquid extraction is completed and before the extraction tube 103 is separated from the raw material tank 201, when the extraction tube 103 is pulled out, it is simultaneously stretched, so that its lower end always covers the lower end of the extraction tube 103, ultimately forming a movable, sealed shield.

[0026] To prevent negative pressure from forming inside the raw material tank 201 during the suction process, a breathing tube 106 is provided on the protective tube 104. Since there is a gap between the suction tube 103 and the insertion port of the raw material tank 201 after the suction tube 103 is inserted into the raw material tank 201, the breathing tube 106 is connected to the inside of the raw material tank 201. The breathing tube 106 can be connected to the outside or a dedicated breathing tank through a pipeline to ensure smooth operation.

[0027] When using the sealed material extraction device of raw material tank 201 for material extraction: First, seal the lower end of the extended protective tube 104 to the inlet of raw material tank 201. Then, insert the extraction tube 103 into the bottom of the tank. As the extraction tube 103 is inserted, the protective tube 104 is compressed. Then, the extraction begins. After the extraction ends, while slowly lifting the extraction tube 103, the protective tube 104 is stretched and completely wraps around the extraction tube 103. All residual liquid dripping from the tube wall is sealed and collected inside the protective tube 104. Finally, disconnect the protective tube 104 from the tank opening and safely remove the entire device.

[0028] The dynamic sealed environment formed by the protective pipe 104 fundamentally solves the safety and environmental hazards of residual liquid dripping from the outer wall of the extraction pipe 103. Moreover, this solution does not rely on the pre-installed pipeline in the raw material tank 201, has strong versatility, and achieves safe and environmentally friendly material transfer.

[0029] Example 2: This embodiment is an optimization based on Embodiment 1, aiming to improve the sealing performance and structural integrity of the upper end of the protective tube 104. A sealing plate is provided on the upper end face of the protective tube 104. A first through hole for the insertion of the extraction tube 103 is opened in the middle of the sealing plate. The inner edge of the first through hole is sealed and fixed to the outer wall of the extraction tube 103. Specifically, the extraction tube 103 can be welded to the sealing plate in a ring to achieve sealing and fixation; alternatively, an O-ring can be used to seal between the inner edge of the first through hole and the outer wall of the extraction tube 103, and then fixed by mechanical compression or other methods.

[0030] The sealing plate and the protective tube 104 together form a cavity that is completely sealed at both the upper and lower ends, which greatly improves the reliability of collecting residual liquid and isolating gas. At the same time, the rigid sealing plate provides stable upper support for the protective tube 104, making the installation of the protective tube 104 more stable, especially maintaining the stability of the shape of the protective tube 104 during material suction.

[0031] Example 3: This embodiment is a further optimization of Embodiment 2, focusing on optimizing the installation method of the breathing tube 106. A second through hole for inserting the breathing tube 106 is provided on the sealing plate, and the inner edge of the second through hole is sealed and fixed to the outer wall of the breathing tube 106. Specifically, the breathing tube 106 can be welded to the sealing plate to achieve sealing and fixation; alternatively, an O-ring can be used to seal the inner edge of the second through hole to the outer wall of the breathing tube 106, and then fixed by mechanical compression or other methods.

[0032] By integrating and fixing the breathing tube 106 onto the sealing plate, the overall structure becomes more compact and regular, avoiding the shaking, entanglement or damage that may occur when the breathing tube 106 is directly installed on the flexible protective tube 104, thus ensuring the long-term stability and reliability of the air pressure balance channel.

[0033] Example 4: The upper end of the protective tube 104 is detachably connected to the sealing plate. Specifically, the upper end of the protective tube 104 is provided with an internal thread, and the corresponding edge of the sealing plate is provided with an external thread. The protective tube 104 and the sealing plate are fixed by a threaded connection.

[0034] When the protective tube 104 needs to be cleaned or replaced, it can be easily removed from the sealing plate, realizing the modularization of this vulnerable part, making daily maintenance, cleaning and component replacement very convenient and significantly reducing the long-term use and maintenance costs of the equipment.

[0035] Example 5: The protective tube 104 is corrugated, and this embodiment specifically defines a preferred form of the protective tube 104. The material of the protective tube 104 can generally be PTFE or PP, which have certain deformability and strength.

[0036] In this design, the inherent expansion and contraction characteristics of the corrugated pipe are utilized to achieve smooth compression and elongation during the lifting and lowering of the feed pipe 103. The corrugated pipe has excellent expansion and contraction fatigue life, can withstand frequent operation, and its unique pleated structure provides excellent guidance during expansion and contraction, effectively preventing jamming.

[0037] Example 6: The protective tube 104 is provided with an inner liner tube that can deform with the protective tube 104. The two ends of the inner liner tube are fixed to the inner wall of the protective tube 104, and the inner liner tube has a smooth inner surface.

[0038] In this embodiment, a thin-walled, smooth, flexible inner liner (e.g., made of polytetrafluoroethylene or polyethylene) is nested inside the corrugated pipe. This inner liner can expand and contract with the corrugated pipe, providing a smooth flow channel surface for the protective pipe 104, allowing residual liquid adhering to it to slide down and collect smoothly, preventing liquid from stagnating on the pipe wall, thereby facilitating cleaning and reducing the risk of cross-contamination.

[0039] Example 7: The extraction tube 103 has a polished outer surface. To reduce liquid residue on the outer wall of the extraction tube 103, the outer wall of the extraction tube 103 can be polished so that the roughness of the outer surface of the extraction tube 103 is not higher than 0.8 μm.

[0040] The smooth surface of the extraction pipe 103 allows more material to slide naturally into the raw material container 201 during extraction due to reduced adhesion. By improving the smoothness of the extraction pipe 103 surface, the amount of liquid adhering to the outer wall of the extraction pipe 103 is significantly reduced from the source, minimizing the risk of dripping and liquid loss.

[0041] Example 8: The lower end of the protective tube 104 is connected to the inlet of the raw material barrel 201 via a quick-release connector. The quick-release connector includes a male plug 105 located at the lower end of the protective tube 104 and a female plug 202 located at the inlet of the raw material barrel 201. The quick-release connector is existing technology and comes in various forms, which will not be described in detail here.

[0042] A first shut-off valve is provided between the lower end of the protective tube 104 and the male plug 105; a second shut-off valve is provided between the inlet of the raw material barrel 201 and the female plug 202; when the first and second shut-off valves are opened, the material extraction tube 103 can pass through. That is, when the two shut-off valves are opened, an axial through channel with an inner diameter not less than the outer diameter of the material extraction tube 103 can be formed inside, thereby ensuring that the material extraction tube 103 can pass through the entire quick-release joint area without obstruction and penetrate into the raw material barrel 201.

[0043] In use, first, with the male and female plugs 202 of the quick-release connector not connected and both shut-off valves closed, align and lock the connectors; then, manually open the first and second shut-off valves to the fully open position to establish a safe through channel; next, pass the extraction tube 103 through this channel for normal liquid extraction; after extraction is complete, first fully retract the extraction tube 103 into the protective tube 104, then manually close the first and second shut-off valves, and finally unlock and disconnect the quick-release connector to complete the entire operation.

[0044] The synergistic design of quick-release connectors and dual shut-off valves creates a double-sealed barrier, effectively isolating the device side from the raw material tank 201 side upon disconnection. Even if residual liquid remains inside the protective tube 104, it can be completely sealed off, fundamentally eliminating the risk of residual liquid leakage or hazardous gas escape, providing the highest level of safety assurance. This is particularly suitable for handling highly toxic, highly volatile, or air-sensitive chemicals.

[0045] Example 9: The first and second shut-off valves are ball valves or gate valves. Mature and reliable full-bore ball valves or full-bore gate valves commonly used in the industrial field are employed.

[0046] When a full-bore ball valve is selected, its valve core, after rotating 90° to open, forms an unobstructed straight circular hole that is essentially the same as the inner diameter of the pipe, providing an extremely smooth passage for the material extraction pipe 103 to pass through. Furthermore, its opening and closing operation is rapid and its sealing is reliable. When a gate valve is selected, its gate, after being fully raised, completely disengages from the flow channel, forming a straight, smooth, and unobstructed perfect passage, which is particularly beneficial for the passage of the material extraction pipe 103.

[0047] By employing standard industrial components such as full-bore ball valves or gate valves, the inherent advantages of their optimal flow characteristics are fully utilized, perfectly solving the core technical requirement of the feed pipe 103 passing through the valve body. This solution, based on widely available and proven mature products, makes the implementation of this invention cost-effective, convenient to procure, and easy to maintain. While ensuring the achievement of high-level safety goals, it also possesses excellent engineering practicality and promotional value.

[0048] Under normal circumstances, it is not necessary to drain the residual liquid accumulated between the protective tube 104 and the extraction tube 103 within a batch operation cycle. After each batch operation, if the tank pump 101 will be idle for a long time, it needs to be cleaned: move the entire device into a fume hood, then open the first shut-off valve at the lower end of the protective tube 104, or remove the protective tube 104 from the sealing plate as a whole, drain the internal residual liquid, and finally perform a thorough cleaning.

[0049] The above are merely preferred embodiments of this utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. A sealed material extraction device for a raw material barrel, comprising a barrel pump, wherein the suction end of the barrel pump is connected to an extraction pipe for insertion into the raw material barrel, and the discharge end of the barrel pump is connected to a discharge pipe. Its features are, Also includes: A protective tube is fitted over the material extraction tube. The lower end of the protective tube can be sealed to the inlet of the raw material barrel and can be disassembled. When the material extraction tube is inserted into the raw material barrel through the inlet, the protective tube can be compressed and placed outside the raw material barrel. When the material extraction tube is pulled out of the raw material barrel, the protective tube can be stretched and its lower end can wrap around the lower end of the material extraction tube. The protective tube is equipped with a breather tube.

2. The sealed material extraction device for the raw material barrel according to claim 1, characterized in that, The upper end face of the protective tube is provided with a sealing plate, and the middle part of the sealing plate is provided with a first through hole for the material extraction tube to be inserted. The inner edge of the first through hole is sealed and fixed with the outer wall of the material extraction tube.

3. The sealed material extraction device for the raw material barrel according to claim 2, characterized in that, The sealing plate has a second perforation for inserting a breathing tube, and the inner edge of the second perforation is sealed and fixed to the outer wall of the breathing tube.

4. The sealed material extraction device for the raw material barrel according to claim 2, characterized in that, The upper end of the protective tube is detachably connected to the sealing plate.

5. The sealed material extraction device for the raw material barrel according to claim 4, characterized in that, The upper end of the protective tube is provided with an internal thread, and the sealing plate is provided with an external thread. The protective tube and the sealing plate are fixed by a threaded connection.

6. The sealed material extraction device for raw material barrels according to claim 1, characterized in that, The protective pipe is constructed using a corrugated pipe configuration.

7. The sealed material extraction device for the raw material barrel according to claim 6, characterized in that, The protective tube is equipped with an inner liner tube that can deform with the protective tube. The two ends of the inner liner tube are fixed to the inner wall of the protective tube, and the inner liner tube has a smooth inner surface.

8. The sealed material extraction device for the raw material barrel according to claim 1, characterized in that, The extraction tube has a polished outer surface.

9. The sealed material extraction device for raw material barrels according to claim 1, characterized in that, The lower end of the protective tube is connected to the inlet of the raw material barrel via a quick-release connector; The quick-release connector includes a male plug located at the lower end of the protective tube and a female plug located at the socket of the raw material barrel. A first shut-off valve is provided between the lower end of the protective tube and the male plug; A second shut-off valve is provided between the inlet of the raw material barrel and the female plug; Both the first and second shut-off valves allow the material extraction pipe to pass through after they are opened.

10. The sealed material extraction device for the raw material barrel according to claim 9, characterized in that, The first shut-off valve and the second shut-off valve are ball valves or gate valves.

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