Portable small seawater desalination device

Abstract

The utility model relates to the technical field of seawater desalination, and discloses a portable small seawater desalination apparatus, which comprises a high-pressure pump assembly, a reverse osmosis membrane assembly, a pressing handle assembly and an accessory, the pressing handle and a membrane shell of the reverse osmosis membrane assembly are both provided with telescopic devices, the handle can be retracted in a non-use state to reduce the size of the device, and the handle can be lengthened in a use state to obtain larger pressing force and pressing space; the membrane shell handle is connected with the membrane shell through a clamping groove; the membrane shell handle and the round spring piece form a telescopic device which stretches out and draws back synchronously with the pressing handle assembly. A handle and a reverse osmosis membrane assembly membrane shell telescopic function are added in the design of the single-soldier seawater desalination device, the limitation of the pressing force requirement on the length size of the device is broken through, the length of the device is remarkably reduced, the size of the device can be reduced by 25% or above under the same treatment capacity condition, the water yield is guaranteed, meanwhile, the device is miniaturized, and one-hand operation can be achieved; the practicability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of seawater desalination, in particular to a portable small seawater desalination device. BACKGROUND

[0002] When living or performing tasks in the sea or land environment lacking fresh water, how to obtain sufficient fresh water resources is a key problem. It is not realistic to carry enough drinking water in advance, and the amount of fresh water obtained by the general method is small and unstable, while the seawater resources are abundant, but the excessive salt and elements in seawater make us unable to directly use seawater as a survival resource, so the desalination of seawater becomes the only way to stably obtain water resources. The amount and speed of obtaining fresh water are related to whether the relevant personnel can survive and whether the physical condition is good, so it is essential to carry a qualified seawater desalination device.

[0003] In today's rapid development of science and technology, various seawater desalination technologies are also changing rapidly, and some water-deficient areas have got rid of the plight of lacking fresh water resources through seawater desalination technology. However, many seawater desalination devices rely on traditional energy such as electricity, so the size cannot be excessively miniaturized, and too much energy cannot be carried in the wild for use of the desalination device, so it is a better choice to use a small press-type seawater desalination device. For example, a "single soldier type portable seawater desalination device" disclosed in Chinese patent document with publication number CN215886556U, comprising a piston assembly, a reverse osmosis membrane assembly, a water taking pipe, a fresh water production pipe and a concentrated water pipe; the piston assembly is fixedly connected with the reverse osmosis membrane assembly; a handle assembly for driving the piston to reciprocate is arranged on the piston assembly, and a water taking inlet and a concentrated water outlet are arranged on the side surface of the piston assembly; a cover is arranged outside the piston assembly; a fresh water outlet lower than the end surface of the assembly is arranged on the reverse osmosis membrane assembly; the cover is fixedly connected with the reverse osmosis membrane assembly; the water taking pipe and the concentrated water pipe are connected with the piston assembly respectively; a detachable water taking coarse filter head is arranged at the non-connected end of the water taking pipe; and the fresh water production pipe is connected with the reverse osmosis membrane assembly. However, the requirement of the required pressing force for the device limits the length of the handle, thereby limiting the overall length of the single soldier seawater desalination device, and the size of the device cannot be further reduced. CONTENT OF THE UTILITY MODEL

[0004] In the above-mentioned prior art, the length requirement of the handle controlled by the required pressing force greatly limits the miniaturization of the seawater desalination device, so the present utility model is improved in combination with the above-mentioned technology, and a portable small seawater desalination device is provided, which breaks through the limitation of the length of the handle on the overall size of the device, significantly improves the miniaturization of the device, and reduces the required pressing force.

[0005] In order to solve the above-mentioned problems, the utility model adopts the following technical solutions.

[0006] The application provides a portable small seawater desalination device, which comprises a high-pressure pump assembly, a membrane assembly, a pressing handle assembly and accessories; the pressing handle assembly is bolted with the high-pressure pump mechanism; the high-pressure pump assembly comprises a water inlet check valve assembly, a piston assembly, a seawater inlet, a concentrated water outlet, a reversing valve assembly, a sealing element and a check valve; the pressing handle assembly comprises an inner handle, an outer handle and a telescopic limiting mechanism, is designed with a telescopic device, and can be contracted in a non-use state to reduce the size of the device; when used, the handle is lengthened to ensure sufficient pressing space and pressing pressure; the membrane assembly comprises a reverse osmosis membrane, a membrane rear end cover, a membrane shell, a membrane shell handle, a fresh water outlet, a water outlet end cover and a circular spring sheet; the membrane shell handle is connected with the membrane shell by a clamping groove; the membrane shell handle and the circular spring sheet form a telescopic device and synchronously extend and contract with the pressing handle assembly; the holding surface of the pressing handle assembly is sandblasted to increase friction to prevent relative sliding during use, increase the adhesion of the metal surface and the coating, and improve the fatigue resistance of the metal.

[0007] As preferred, the inner handle is divided into two symmetrical parts and connected by three pairs of bolts and nuts; the outer handle is connected with the inner handle by a circular groove and a telescopic limiting mechanism.

[0008] As preferred, the piston rod of the piston assembly adopts a sealing element to maintain the sealing performance of the high-pressure pump assembly.

[0009] As preferred, the check valve core adopts a ceramic ball with high strength and corrosion resistance.

[0010] As preferred, the inner handle and the outer handle are connected in a sleeved manner to realize the relative sliding of the inner handle and the outer handle; the telescopic function of the pressing handle assembly is realized by the relative movement of the inner handle and the outer handle, so that the pressing force assistance of 36% and the reduction of the device size of 25% can be achieved; the handle can be opened and closed at an angle of 0-60° around the shaft to ensure sufficient force application space; and the edges and corners are chamfered to ensure the use experience.

[0011] As preferred, the reverse osmosis membrane is fixedly connected with the membrane rear end cover and the water outlet end cover respectively; the membrane rear end cover is fixed by a snap ring and a snap ring positioning hoop; the telescopic function of the membrane shell handle is realized by the relative movement of the membrane shell handle and the membrane shell, and is limited by the circular spring sheet; the membrane shell handle is connected with the membrane shell by a clamping groove, which effectively avoids the damage of external factors to the membrane shell and improves the practicality in combat; the membrane shell handle and the circular spring sheet form a telescopic device and synchronously extend and contract with the pressing handle assembly to ensure the convenience of use of the device.

[0012] As preferred, a plurality of fixing clamps are arranged at the connection between the membrane assembly and the high-pressure pump assembly, and corresponding fixing clamping grooves are arranged on the high-pressure pump assembly; the membrane assembly and the high-pressure pump assembly are fixedly connected by a plurality of screws.

[0013] As preferred, the distance K between the piston rod and the fulcrum, the length L of the handle before stretching 缩 And L 伸 The distance L between the midpoint of the handle force and the fulcrum is comprehensively considered according to the actual use scene and ergonomics, if L 缩 = 0.115 mm, L 伸 = 0.155 mm, the theoretical pressing force is, the pressing force can be transmitted on the piston T, the water pressure can be increased by about 36% after stretching.

[0014] As preferred, the telescopic limiting mechanism provides the telescopic device with the limiting position of the contraction state and the elongation state by the connection of the two side beads and the inner and outer handles.

[0015] As preferred, the inner and outer handle structure is simple, the probability of problems is low, the use experience is optimized, and the difficulty of handle assembly processing is reduced.

[0016] As preferred, the accessories include silica gel hose, filter head and bandage, the filter head uses nylon as the main material, the filter screen uses 200 mesh nylon filter screen, has good corrosion resistance, and is additionally provided with an outer cover, which can be used as a counterweight and can block impurities from damaging the filter screen; the bandage is connected with the clamping groove on the membrane shell by a buckle, and can be tied to the thigh and other parts to realize one-handed operation.

[0017] Therefore, the utility model has the following beneficial effects:

[0018] (1) The design increases the telescopic function of the pressing handle and the membrane shell handle, breaks through the limitation of the handle length on the overall size of the device, thereby reducing the required pressing force. Under the same pressing force, the overall volume of the device can be reduced by more than 25%; and under the same volume of the device, the water inlet pressure can be increased by about 36% after stretching. The device is miniaturized while ensuring water production, realizes one-handed operation, and improves combat practicality;

[0019] (2) The setting of the outer handle and the membrane shell handle realizes the telescopic function, protects the handle body and the membrane shell, increases the stability and compactness of the device, has a long service life, and has an elegant and delicate appearance;

[0020] (3) The ceramic ball is used as the valve core of the one-way valve, which is better than metal and rubber materials in corrosion resistance, and improves the durability of the device;

[0021] (4) The outer handle adopts the telescopic limiting mechanism, the membrane shell handle adopts the circular spring sheet, and the membrane rear end cover adopts the snap ring fixing, and the innovative structure design realizes further reduction of the volume of the device. BRIEF DESCRIPTION OF DRAWINGS

[0022] Various other advantages and benefits will become apparent to those of ordinary skill in the art, upon reading the following detailed description of the preferred embodiment. The accompanying drawings are included to provide a better understanding of the preferred embodiment, and are not intended to constrain the application. Moreover, like reference numerals denote similar parts throughout the present drawings. In the drawings:

[0023] Figure 1 Figure 1 is an overall structure of a portable small seawater desalination device according to an embodiment of the present application;

[0024] Figure 2 Figure 2 is a front and back view of a pressing handle assembly and a membrane shell handle of a portable small seawater desalination device according to an embodiment of the present application;

[0025] Figure 3 Figure 3 is a cross-sectional view of a portable small seawater desalination device according to an embodiment of the present application;

[0026] Figure 4 Figure 4 is a cross-sectional view of a telescopic limiting device according to an embodiment of the present application;

[0027] Figure 5 Figure 5 is a cross-sectional view of a filter head according to an embodiment of the present application;

[0028] Figure 6 Figure 6 is a structure view of a membrane rear end cover according to an embodiment of the present application.

[0029] In the figure: 1. High-pressure pump assembly, 1-1. Water inlet check valve assembly, 1-2. Piston assembly, 1-3. Seawater inlet, 1-4. Concentrated water outlet, 1-5. Changeover valve assembly, 1-6. Sealing element, 1-7 Check valve, 2. Membrane assembly, 2-1. Reverse osmosis membrane, 2-2. Membrane rear end cover, 2-21. Clasping ring, 2-22. Clasping ring positioning hoop, 2-3. Membrane shell, 2-4. Membrane shell handle, 2-5. Fresh water outlet, 2-6. Outlet end cover, 2-7. Circular spring sheet, 3. Pressing handle assembly, 3-1. Inner handle, 3-2. Outer handle, 3-3. Telescopic limiting mechanism, 3-31. Bead head, 3-32. Spring, 4-1. Silicone hose, 4-2. Filter head, 4-21. Pagoda joint, 4-22. Filter core, 4-23. Outer cover, 4-3. Bandage. DETAILED DESCRIPTION

[0030] The embodiments of the present application will be further described below with specific examples.

[0031] In this embodiment, for example, Figure 1 and Figure 3The portable small seawater desalination device includes a high-pressure pump assembly 1, a membrane assembly 2, a pressing handle assembly 3 and accessories; the high-pressure pump assembly 1 includes a water inlet check valve assembly 1-1, a piston assembly 1-2, a seawater inlet 1-3, a concentrated water outlet 1-4, a reversing valve assembly 1-5, a sealing element 1-6 and a check valve 1-7; the pressing handle assembly 3 is bolted with the high-pressure pump mechanism 1; the pressing handle assembly 3 includes an inner handle 3-1, an outer handle 3-2 and a telescopic limiting mechanism 3-3, the pressing handle assembly 3 is designed with a telescopic device, the handle can be retracted in a non-use state, the size of the device is reduced, the handle is lengthened in a use state, and enough pressing space and pressing pressure are ensured; the membrane assembly 2 includes a reverse osmosis membrane 2-1, a membrane rear end cover 2-2, a membrane shell 2-3, a membrane shell handle 2-4, a fresh water outlet 2-5, a water outlet end cover 2-6 and a circular spring sheet 2-7, the membrane shell handle 2-4 is connected with the membrane shell 2-3 by a clamping groove, and the membrane shell handle 2-4 and the circular spring sheet 2-7 constitute a telescopic device and synchronously telescope with the pressing handle assembly.

[0032] Further, the pressing handle assembly 3 is designed with a telescopic device, the handle can be retracted in a non-use state, the volume of the device is reduced, the device is convenient to carry, the handle is lengthened in a use state, and enough pressing space and pressing pressure are ensured; the membrane shell handle 2-4 is connected with the membrane shell 2-3 through a clamping groove, external factors that may cause damage to the membrane shell are effectively avoided, and the practicality in combat is improved.

[0033] Specifically, the pressing handle assembly 3 and the membrane shell handle 2-4 are telescoped through the telescopic device.

[0034] Specifically, the inner handle is divided into two symmetrical parts and connected through three pairs of bolts and nuts; the outer handle 3-2 is connected with the inner handle 3-1 through a circular groove and a telescopic limiting mechanism 3-3.

[0035] Specifically, the inner handle 3-1 and the outer handle 3-2 are connected in a sleeved manner to realize the relative sliding of the inner handle and the outer handle.

[0036] Specifically, the telescopic limiting mechanism 3-3 provides limiting for the telescopic device in the retracted state and the lengthened state through the connection of the two side beads with the inner handle and the outer handle.

[0037] Specifically, the membrane shell handle 2-4 is connected with the membrane shell 2-3 through a clamping groove, and the circular spring sheet 2-7 provides limiting.

[0038] Specifically, the opening and closing angle of the pressing handle assembly 3 around the shaft can reach 60 degrees; when the angle is about to reach 60 degrees, the piston contacts the piston cylinder to generate gradually increasing resistance, so as to remind the user to unload.

[0039] Further, the distance K between the piston rod and the pressing fulcrum of the pressing handle assembly, and the distance L between the force receiving point of the handle and the fulcrum are designed according to the actual use scene and ergonomics, and L 缩 is 0.115 mm, and L 伸 is 0.155 mm, so that the theoretical pressing force is 0.155 mm, the pressing force can be transmitted on the piston as the pressure T, and the water inlet pressure of the device after stretching is increased by about 36%.

[0040] Specifically, the seawater inlet and the concentrated water outlet are on the same line and perpendicular to the outer side of the pump shell.

[0041] In some embodiments, as Figure 2 A front and back schematic view of the pressing handle assembly 3 and the membrane shell handle 2-4 of the portable small seawater desalination device is shown, and the device length is shortened to 115 mm, so that the small seawater desalination device is miniaturized.

[0042] In some embodiments, as Figure 4 A sectional view of the telescopic limiting device is shown, and the outer handle 3-2 and the inner handle 3-1 are connected through a circular groove and a telescopic limiting mechanism 3-3.

[0043] In some embodiments, as Figure 5 A sectional view of the filter head is shown, and the filter head 4-2 includes a tower joint 4-21, a filter core 4-22 and an outer cover 4-23; the filter screen of the filter core 4-22 adopts a 200-mesh nylon filter screen; the nylon outer cover 4-23 is additionally installed outside the filter core 4-22, which serves as a counterweight and can also prevent impurities from damaging the filter screen.

[0044] According to the above embodiments, the working process of the portable small seawater desalination device is as follows:

[0045] Before starting work, the limit is released by pressing the beads on both sides of the handle, and the handle is elongated to the maximum length; during work, both hands tightly hold the two handles or use the binding belt to fix the membrane shell handle to operate the pressing handle assembly 3 with one hand, when the pressing handle assembly 3 is lifted, the piston rod is pulled forward, a negative pressure is formed in the cavity, seawater is extracted through the water rough filter head 4-2, the silica gel hose 4-1, the water inlet one-way valve assembly 1-1, and the piston cavity. When the pressing handle assembly 3 is pressed down, the piston rod moves backward, the water inlet one-way valve assembly 1-1 is closed, and seawater is pushed into the membrane assembly 2.

[0046] When the seawater fills the reverse osmosis membrane assembly 2, the press handle assembly 3 is pressed again, the piston rod moves backward, a part of the treated concentrated water is returned to the piston cavity through the reversing valve assembly 1-5, the seawater utilization rate is improved, the piston rod is assisted to push, and the required operating pressure is reduced. The fresh water generated after the reverse osmosis treatment is directly discharged through the fresh water outlet and the fresh water pipe, and is used as qualified fresh water for drinking. Finally, the concentrated seawater after multiple reverse osmosis is collected and discharged through the concentrated water pipe beside the reversing valve, and the desalination process is completed.

[0047] The device design that the concentrated water can be recycled for multiple reverse osmosis can realize constant recovery rate. Regardless of the change of TDS and the like of the inlet water, the fixed recovery rate can be ensured, the water yield and water quality are ensured to be good, the pressure of the recycled concentrated water can be converted into the inlet water pressure, the operating pressure is reduced, the energy recycling is realized, the user is provided with convenience, the design requirements of the manually driven seawater desalination device are realized. Moreover, the filtering and purifying effect is good, the reverse osmosis membrane adopted is a dense organic membrane, only allows water molecules to pass through, and prevents salt ions in the water from passing through, and the desalination rate can reach more than 98%. Meanwhile, the reverse osmosis can effectively remove inorganic salts, suspended solids, organic matter, colloids, bacteria, viruses and other impurities, so that the water quality of the outlet water is greatly improved to reach the standard of drinking water.

[0048] If disassembly is needed, the press handle assembly of the valve device is switched, the handle is pulled out to the working state position, the press bead head is pressed to remove the telescopic limiting mechanism, the limiting screw is unscrewed to pull out the outer handle, and finally the three pairs of fixed bolts and nuts of the inner handle are removed. After the maintenance and update are completed, the parts can be installed in the reverse order of disassembly.

[0049] When the device needs to replace the reverse osmosis membrane, the snap ring 2-21 and the membrane rear end cover 2-2 are removed, the water outlet end cover 2-6 is knocked out, the reverse osmosis membrane, the water outlet end cover 2-6 and the fresh water outlet 2-5 are pushed out of the membrane shell 2-3, and finally the reverse osmosis membrane and the remaining parts are separated and replaced. After the replacement is completed, the parts can be installed in the original route.

[0050] The above embodiment is only used to further illustrate that the utility model is a portable small seawater desalination device, but the utility model is not limited to the embodiment, and any simple modification, equivalent change and modification made according to the technical essence of the utility model to the above embodiment all belong to the protection range of the technical scheme of the utility model.

Claims

1. A portable compact seawater desalinator characterized by, The composition comprises: a high-pressure pump assembly (1), a membrane assembly (2), a pressing handle assembly (3) and accessories; The high-pressure pump assembly (1) comprises a water inlet check valve assembly (1-1), a piston assembly (1-2), a seawater inlet (1-3), a concentrated water outlet (1-4), a reversing valve assembly (1-5), a sealing element (1-6) and a check valve (1-7); The pressing handle assembly (3) is bolted with the high-pressure pump assembly (1); The pressing handle assembly (3) comprises an inner handle (3-1), an outer handle (3-2) and a telescopic limiting mechanism (3-3), and the pressing handle assembly (3) is designed with a telescopic device, so that the handle can be retracted in a non-use state, the size of the device is reduced, the handle is lengthened in a use state, and enough pressing space and pressing pressure are ensured; The membrane assembly (2) comprises a reverse osmosis membrane (2-1), a membrane rear end cover (2-2), a membrane shell (2-3), a membrane shell handle (2-4), a fresh water outlet (2-5), a water outlet end cover (2-6) and a circular spring sheet (2-7), the membrane shell handle (2-4) is connected with the membrane shell (2-3) by a clamping groove, and the membrane shell handle (2-4) and the circular spring sheet (2-7) constitute a telescopic device and synchronously telescope with the pressing handle assembly; The accessories comprise a silica gel hose (4-1), a filter head (4-2) and a bandage (4-3).

2. A portable compact seawater desalinator according to claim 1, characterized in that, The inner handle (3-1) is composed of two symmetrical parts and is connected by a bolt and a nut; the outer handle (3-2) is connected with the inner handle (3-1) by a circular groove and the telescopic limiting mechanism (3-3).

3. A portable compact seawater desalinator according to claim 1, characterized in that, The piston rod of the piston assembly (1-2) adopts the sealing element (1-6) to maintain the sealing performance of the high-pressure pump assembly (1).

4. A portable compact seawater desalinator according to claim 1, characterized in that, The check valve (1-7) adopts a ceramic ball.

5. A portable compact seawater desalinator according to claim 2, wherein The inner handle (3-1) and the outer handle (3-2) are connected in a sleeved manner, and relative sliding of the inner handle and the outer handle is realized.

6. A portable compact seawater desalinator according to claim 1, characterized in that, The reverse osmosis membrane (2-1) is fixedly connected with the membrane rear end cover (2-2) and the water outlet end cover (2-6) respectively; the membrane rear end cover (2-2) is fixed by a clamping ring (2-21) and a clamping ring positioning hoop (2-22), the membrane shell handle (2-4) realizes the telescopic function by relative movement with the membrane shell (2-3), and is limited by the circular spring sheet (2-7).

7. A portable compact seawater desalinator according to claim 1, characterized in that, The connection between the membrane assembly (2) and the high-pressure pump assembly (1) is provided with a fixed clamping piece, and the high-pressure pump assembly (1) is provided with a corresponding fixed clamping groove; the membrane assembly (2) and the high-pressure pump assembly (1) are fixedly connected by screws.

8. A portable compact seawater desalinator according to claim 1, characterized in that, The filter head (4-2) comprises a tower joint (4-21), a filter core (4-22) and an outer cover (4-23); the filter screen of the filter core (4-22) adopts a 200-mesh nylon filter screen; the filter core (4-22) is additionally provided with a nylon outer cover (4-23) outside, which serves as a counterweight and can also prevent impurities from damaging the filter screen; the bandage (4-3) is connected with the clamping groove on the membrane shell by a buckle, and the seawater desalination device can be tied to the thigh, and the seawater desalination operation can be performed by one hand.

9. A portable compact seawater desalinator according to claim 1, characterized in that, The handle assembly (3) can be opened and closed at an angle of 0-60° around the shaft.

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