A negative pressure type water filtering structure applied to a portable assembled outdoor emergency tool

Abstract

The utility model discloses a kind of negative pressure type water filtering structures applied to portable assembled outdoor emergency tool, including detachable mutual sleeve joint of water filtering joint and end joint, water filter is arranged between water filtering joint and end joint, the middle portion inner wall of end joint is provided with hand pump, the hand pump is communicated with water filter by the inner cavity air path of end joint, the hand pump is formed negative pressure between water filter and hand pump when lifting, so that water from bottom into water filtering joint is filtered by water filter, the hand pump is communicated with external air pressure when pressing down.This utility model's negative pressure type water filtering structure applied to portable assembled outdoor emergency tool has the characteristics of high filtering efficiency, strong structure applicability and good portability.

Description

Technical Field

[0001] This utility model relates to the field of emergency tool technology, specifically to a negative pressure water filtration structure applied to portable, assembled outdoor emergency tools. Background Technology

[0002] To effectively improve the shortcomings of portable outdoor emergency tools, such as limited functionality, complex structure, and inability to filter water, Chinese utility model patent CN218869666U discloses a portable, modular outdoor emergency tool with water filtration function. It includes, from top to bottom, a threaded end joint, a water filter joint, a utility knife joint, and a flashlight joint, forming a straight rod-shaped structure. A compass is connected to the top surface of the end joint, and a columnar water filter is threaded to the inner side of the top of the water filter joint. A water outlet is movably fitted to the inner side of the top of the water filter. The structure is simple, easy to assemble and disassemble, and the assembled straight rod shape makes it easy to carry. It includes a compass, a whistle for distress, a flashlight, and a multi-functional utility knife. This utility model has a water filtration function, capable of filtering and purifying outdoor water sources to achieve a safe drinking water effect. It can be easily connected to the mouth of ordinary mineral water bottles or water bag openings, making it highly practical.

[0003] However, in actual use, its water filter 21 has at least three stages of micro-filters, using materials such as PP cotton, activated carbon, and ultrafiltration membranes. This results in drawbacks such as low flow rate, slow speed, and low efficiency. A detailed analysis based on the filter material types is shown in the table below.

[0004] Therefore, this emergency tool still has obvious shortcomings in actual use and cannot meet normal use requirements. Utility Model Content

[0005] The purpose of this invention is to provide a negative pressure water filtration structure for portable, modular outdoor emergency tools, which features high filtration efficiency, strong structural applicability, and good portability.

[0006] This utility model can be achieved through the following technical solutions: This utility model applies to a negative pressure water filtration structure for portable, assembled outdoor emergency tools. It includes a detachable, interlocking water filter joint and an end joint. A water filter is provided between the water filter joint and the end joint. A hand pump is provided on the inner wall of the middle part of the end joint. The hand pump is connected to the water filter through the air passage in the inner cavity of the end joint. When the hand pump is lifted, a negative pressure is formed between the water filter and the hand pump, so that the water entering the water filter joint from the bottom is filtered by the water filter. When the hand pump is pressed down, it is connected to the external air pressure.

[0007] Furthermore, the hand-cranked pump includes a piston that is movably disposed on the inner wall of the end joint cylinder and a hand crank that drives the piston to move up and down. The hand crank forms a movable crank transmission fulcrum through a fixed seat on the outer wall of the end joint cylinder.

[0008] Furthermore, this water filter features a composite layered filtration structure, comprising a PP cotton filter screen and a ceramic filter element along the water filtration direction, with an activated carbon filter layer filling the space between the PP cotton filter screen and the ceramic filter element. Using a ceramic filter element instead of an ultrafiltration membrane avoids the impact of excessive ultrafiltration membrane filtration pressure on filtration efficiency. Simultaneously, the composite multi-layered structure, with the PP cotton filter screen providing coarse filtration, the activated carbon filter layer adsorbing and removing odors, and the ceramic filter element performing final fine filtration, ensures optimal filtration results. In addition, the ceramic filter element possesses good mechanical strength, providing structural support for the entire composite layered structure and facilitating replacement and maintenance.

[0009] Furthermore, the interior of the end joint is a cylindrical wall, and a water outlet is provided on the side wall of the end joint. The water outlet is located above the highest position of the piston, and its water discharge process is the same as that of an existing hand-cranked pump, which facilitates collection.

[0010] Furthermore, the water outlet head is threaded and connected to the side wall of the end joint, enabling a detachable connection and improving assembly convenience and portability.

[0011] Furthermore, the threaded connections of the water filter joint and the end joint are fitted with sealing rings to ensure a tight seal.

[0012] Furthermore, the hand crank includes an arc-shaped connecting part and a connecting rod part. The connection point between the arc-shaped connecting part and the connecting rod part is movably supported by a fixed base. The other end of the arc-shaped connecting part passes through the top of the end joint and connects with the piston, which facilitates disassembly and portable storage.

[0013] This utility model discloses a negative pressure water filtration structure for portable, modular outdoor emergency tools, which has the following beneficial effects: First, it has high filtration efficiency. By using a hand-cranked pump to create negative pressure, it accelerates the flow rate of the water filter, increases the filtration volume, and effectively improves the filtration efficiency. Secondly, it has strong structural applicability. Based on existing emergency tools, this utility model improves the filtration structure by using a hand-cranked pump. Other structures are the same as existing emergency tools, which has good structural applicability. Third, it is highly portable. Even after the improvement, the emergency tool of this utility model still adopts a detachable assembly structure, which effectively ensures its portability. Attached Figure Description

[0014] Appendix Figure 1 This is a cross-sectional schematic diagram of a negative pressure water filtration structure for a portable, assembled outdoor emergency tool according to the present invention. The markings in the attached diagram include: 1. End joint; 11. Fixing seat; 12. Water outlet; 2. Water filter joint; 21. Water filter; 211. PP cotton filter screen; 212. Activated carbon filling layer; 213. Ceramic filter element; 6. Hand pump; 61. Piston; 62. Arc-shaped connection part; 63. Connecting rod part. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solution of this utility model, the product of this utility model will be further described in detail below with reference to embodiments.

[0016] like Figure 1 As shown, this utility model applies to a negative pressure water filtration structure for portable, assembled outdoor emergency tools. It includes a detachable, interlocking water filtration joint 2 and an end joint 1. A water filter 21 is provided between the water filtration joint 2 and the end joint 1. A hand pump 6 is provided on the inner wall of the middle part of the end joint 1. The hand pump 6 is connected to the water filter 21 through the air passage in the inner cavity of the end joint 1. When the hand pump 6 is lifted, a negative pressure is formed between the water filter 21 and the hand pump 6, so that the water entering the water filtration joint 2 from the bottom is filtered by the water filter 21. When the hand pump 6 is pressed down, it is connected to the external air pressure.

[0017] like Figure 1 As shown, the hand-cranked pump 6 includes a piston 61 that is movably disposed on the inner wall of the end joint 1 cylinder and a hand crank that drives the piston to move up and down. The hand crank forms a movable crank transmission fulcrum through the fixed seat 11 on the outer wall of the end joint 1 cylinder.

[0018] As shown in the figure, the water filter 21 has a composite layered filtration structure, including a PP cotton filter screen 211 and a ceramic filter element 213 along the water filtration direction, with an activated carbon filter layer 212 filled between the PP cotton filter screen 211 and the ceramic filter element 213.

[0019] In this invention, to ensure effective water output, the end joint 1 has a cylindrical inner wall, and a water outlet 12 is provided on the side wall of the end joint, located above the highest position of the piston 61. For ease of disassembly and portability, the water outlet 12 is threadedly connected to the side wall of the end joint 1. In this invention, to ensure sealing, the threaded connection of the water filter joint and the end joint is fitted with a sealing ring.

[0020] like Figure 1 As shown, the hand crank includes an arc-shaped connecting part 62 and a connecting rod part 63. The connection point between the arc-shaped connecting part 62 and the connecting rod part 63 is movably supported by the fixed seat 11. The other end of the arc-shaped connecting part 62 passes through the top of the end joint 1 and connects with the piston 62.

[0021] It should be noted that this utility model is an improvement based on the existing technology CN218869666U. The structure and connection method of the other unchanged parts are the same as those of CN218869666U, and will not be described again here.

[0022] Meanwhile, the principle of the hand pump is based on the commonly used hand pump water pressure method, and its principle is also existing technology, so it will not be elaborated further.

[0023] Furthermore, the dimensions shown are not absolute and can be adjusted according to actual needs. For example, if water enters from the bottom, the bottom of the water filter joint can be made to correspond to the size of the water bottle or water bag opening for easy docking; alternatively, a closed cap can be used to form the water storage section, where the lower end of the water filter joint corresponds to the size of the closed cap. If an inverted filtration method is considered, the upper part can be an open water inlet.

[0024] For the filtration process, when filtering water, there is no need to use the existing connecting sleeve between the water filter joint and the end joint. The connecting sleeve is removed and ready for use; the end joint is directly and sealed onto the end of the water filter joint. When drinking water from a wild source is needed, fill the existing water filter joint with a portable water bottle (or the opening of a regular mineral water bottle or water bag) containing wild water (river water, stream water, lake water, etc.). Under the negative pressure of the hand-cranked pump, the water passes through the water filter joint and enters the water filter for rapid filtration and purification, then flows out from the outlet of the end joint. Of course, to fully utilize the gravity of the water to accelerate filtration, it can also be used upside down.

[0025] In the description of this utility model, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The above embodiments are merely specific examples of this utility model, and their descriptions are quite specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these obvious substitutions all fall within the protection scope of this utility model.

Claims

1. A negative pressure water filtration structure for portable, modular outdoor emergency tools, comprising a detachable, interlocking water filtration joint and an end joint, wherein a water filter is disposed between the water filtration joint and the end joint, characterized in that: A hand-cranked pump is provided on the inner wall of the middle part of the end joint. The hand-cranked pump is connected to the water filter through the air passage in the inner cavity of the end joint. When the hand-cranked pump is lifted, a negative pressure is formed between the water filter and the hand-cranked pump, so that the water entering the water filter joint from the bottom is filtered by the water filter. When the hand-cranked pump is pressed down, it is connected to the external air pressure.

2. The negative pressure water filtration structure for portable, modular outdoor emergency tools according to claim 1, characterized in that: The hand-cranked pump includes a piston that is movably mounted on the inner wall of the end joint cylinder and a hand crank that drives the piston to move up and down. The hand crank forms a fulcrum for the movable crank through a fixed seat on the outer wall of the end joint cylinder.

3. The negative pressure water filtration structure for portable, modular outdoor emergency tools according to claim 2, characterized in that: This water filter has a composite layered filtration structure, including a PP cotton filter screen and a ceramic filter element along the water filtration direction, with an activated carbon filter layer filling the space between the PP cotton filter screen and the ceramic filter element.

4. The negative pressure water filtration structure for portable, modular outdoor emergency tools according to claim 3, characterized in that: The end joint has a cylindrical wall inside, and a water outlet is provided on the side wall of the end joint, which is located above the highest position of the piston.

5. The negative pressure water filtration structure for portable, modular outdoor emergency tools according to claim 4, characterized in that: The water outlet head is connected to the side wall of the end joint using a threaded movable connection.

6. The negative pressure water filtration structure for portable, modular outdoor emergency tools according to claim 5, characterized in that: The water filter joint and end joint have sealing rings fitted at their threaded connections.

7. The negative pressure water filtration structure for portable, modular outdoor emergency tools according to claim 6, characterized in that: The hand crank includes an arc-shaped connecting part and a connecting rod part. The connection point between the arc-shaped connecting part and the connecting rod part is movably supported by a fixed seat. The other end of the arc-shaped connecting part passes through the top of the end joint and connects with the piston.

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