Portable seawater desalination device

Abstract

The invention relates to the technical field of seawater desalination treatment, in particular to a portable seawater desalination device. The device comprises a connector, a filter and a pressure regulating component, a compression chamber is arranged in the connector, an air storage cavity in one-way communication with the compression chamber is formed in one side of the connector, and a water inlet pipe in one-way communication with the compression chamber is arranged on the other side of the connector; the pressure regulating part is used for changing the pressure intensity in the compression chamber, and the filter is arranged on one side of the connector and communicates with the compression chamber; according to the portable seawater desalination device, air and seawater in the water inlet pipe are guided through the arranged blocking mechanism, so that the air in the water inlet pipe can be stored in the air storage cavity in advance, and the air in the water inlet pipe is utilized, so that when the RO membrane is cleaned, the pressing frequency of a user on the seawater desalination device is reduced, and the practicability of the seawater desalination device is improved. And the physical consumption of the user is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of seawater desalination treatment, in particular to a portable seawater desalination device. Background Art

[0002] With the continuous development of seawater desalination technology, it has gradually become an important means to solve the problem of insufficient water resources in coastal areas. However, most seawater desalination devices usually rely on conventional energy and require a stable energy supply and long-term sites. For islands far away from land and lacking energy, ships with limited power supply, offshore platforms, maritime emergency rescue, wilderness survival, scientific investigation and other special occasions with short-term and small-scale seawater desalination needs, human-powered portable seawater desalination devices have become increasingly valued for their compact structure, small size, risk resistance, and diversified use conditions. Therefore, there is an urgent market demand for human-powered portable seawater desalination devices.

[0003] Portable seawater desalination devices usually use RO (reverse osmosis) membranes to desalinate seawater. The working principle of RO (reverse osmosis) membranes is to overcome the osmotic pressure of water by applying pressure, so that water molecules pass through the membrane pores, while solutes are retained, thereby achieving the purpose of purifying water.

[0004] Since RO (reverse osmosis) membranes require pressure to purify water, after using a portable seawater desalination device, due to the disappearance of pressure, part of the seawater will remain at the RO (reverse osmosis) membrane, causing bacteria and salt in the seawater to adhere to the surface of the RO (reverse osmosis) membrane, affecting the water quality when it is used next time.

[0005] Although the current desalination devices can avoid the above problems, the method to deal with them is basically to remove the water inlet pipe from the seawater after use, and then continue to press the portable desalination device to make it absorb external gas and use the gas to blow out the seawater in the RO (reverse osmosis) membrane, thereby reducing the residual seawater. However, this requires people to press the desalination device for a long time, which will consume more physical energy. Summary of the invention

[0006] The purpose of the present invention is to provide a portable seawater desalination device to solve the problems raised in the above background technology.

[0007] To achieve the above object, a portable seawater desalination device is provided, comprising a connector, a filter and a pressure regulating component, wherein a compression chamber is arranged inside the connector, an air storage cavity which is in one-way communication with the compression chamber is arranged on one side, and a water inlet pipe which is in one-way communication with the compression chamber is arranged on the other side; the pressure regulating component is used to change the pressure inside the compression chamber, and the filter is arranged on one side of the connector and is in communication with the compression chamber; A blocking mechanism connected to the air storage chamber is provided at the connection between the compression chamber and the filter, and the blocking mechanism is used to adjust the connection state between the compression chamber and the filter, so that before the seawater enters the compression chamber, the air in the water inlet pipe is compressed into the air storage chamber through the pressure regulating component; after the seawater enters the compression chamber through the water inlet pipe, the seawater is transported to the filter; A release mechanism is provided between the air storage chamber and the filter. After the filtering is stopped, the compressed gas stored in the air storage chamber is allowed to enter the filter by opening the release mechanism, and the seawater in the filter is blown out.

[0008] As a further improvement of the technical solution, a first one-way valve is provided at the connection point between the water inlet pipe and the compression chamber, the air storage chamber is connected to the compression chamber through an exhaust pipe, and a second one-way valve is provided inside the exhaust pipe; When negative pressure is generated in the compression chamber, the compression chamber sucks the air and seawater in the water inlet pipe into the compression chamber through the first one-way valve; when positive pressure is generated in the compression chamber, the air and seawater in the compression chamber can enter the air storage cavity through the second one-way valve.

[0009] As a further improvement of the technical solution, the pressure regulating component includes a piston block slidably arranged inside the compression chamber, and a driving member for driving the piston block to reciprocate in the compression chamber; wherein: The inner circle of the compression chamber is in a circular structure to correspond to the shape of the piston block; one end of the compression chamber close to the piston block passes through one side of the connector.

[0010] As a further improvement of the present technical solution, the driving member includes a pressure rod with one end rotatably connected to the end of the connecting head, and a transmission rod rotatably connected between the pressure rod and the piston block. By applying pressing force or pulling force to the pressure rod, the distance between the pressure rod and the piston block is changed, thereby driving the piston block to make corresponding movement through the transmission rod.

[0011] As a further improvement of the technical solution, the filter includes a cylindrical shell with a hollow interior and an RO membrane installed inside the shell; one end of the shell is connected to the compression chamber, the other end is connected to the clean water pipe, and the end of the bottom close to the clean water pipe is connected to the return water pipe; wherein: A third one-way valve is provided at the connection point between the shell and the compression chamber, for allowing the seawater in the compression chamber to enter the shell; The clean water pipe is communicated with one end of the central tube of the RO membrane.

[0012] As a further improvement of the technical solution, the blocking mechanism includes a slideway having one end connected to the air storage cavity, the other end of which passes through the compression chamber and then passes through the side wall of the connector, and a blocking plate elastically arranged in the slideway, one side of the blocking plate is provided with a through hole, and under normal conditions, the through hole is misaligned with the compression chamber; A water volume sensing mechanism is provided at the connection point between the slideway and the air storage chamber. After the seawater enters the air storage chamber, the compressed gas in the air storage chamber drives the baffle plate to move so that the through hole is connected with the compression chamber. The blocking plate is slidably connected to the slideway, and a return spring is provided between one end of the blocking plate and one side of the slideway to elastically connect the two; The baffle plate is located between the exhaust pipe and the release mechanism.

[0013] As a further improvement of the technical solution, the water volume sensing mechanism includes a baffle elastically arranged in a longitudinal manner at the connection between the air storage chamber and the slideway, and a water box for collecting seawater flowing out of the exhaust pipe; an opening is arranged at the top of the water box, and the bottom end of the baffle is bent to one side to form a connection end for supporting the water box; wherein: The volume of the baffle is larger than the connection between the slideway and the air storage cavity, and the side wall of the baffle fits the side wall of the air storage cavity to seal the connection between the slideway and the air storage cavity; A connecting spring is provided between the bottom of the baffle connecting end and the bottom of the air storage chamber to elastically connect the two; When the weight of the seawater in the water box overcomes the elasticity of the connecting spring, the water box drives the baffle plate to slide down, so that the connection between the slideway and the air storage chamber is opened.

[0014] As a further improvement of the technical solution, a guide pipe with one end facing the water storage box is provided at the end of the exhaust pipe.

[0015] As a further improvement of the technical solution, the release mechanism includes an air delivery channel connected to the air storage chamber at one end and to the compression chamber at the other end, and a slide groove arranged at the bottom end longitudinally penetrating the air delivery channel, wherein: The air delivery channel is located between the blocking mechanism and the filter; A valve stem with a diameter greater than the diameter of the air delivery channel is slidably arranged in the slide groove, a mounting spring is arranged at the bottom of the valve stem, and the top extends upward to form a force-bearing rod with a height higher than the top of the connector, and an inward recessed portion is arranged in the middle of the valve stem. By applying pressing force to the force-bearing rod, the recessed portion of the valve stem is moved to the air delivery channel, so that the slide groove and the filter are connected.

[0016] As a further improvement of the technical solution, a valve communicating with the air storage chamber is provided on the side wall of the connector.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. In the portable seawater desalination device, the air and seawater in the water inlet pipe are guided by a blocking mechanism, so that the air in the water inlet pipe can be pre-stored in the air storage chamber, thereby realizing the utilization of the air in the water inlet pipe, thereby reducing the number of times the user presses the seawater desalination device when cleaning the RO membrane, and reducing the user's physical energy consumption.

[0018] 2. In the portable seawater desalination device, the seawater is sensed by the water box, so that the water initially sucked into the water inlet pipe will be discharged into the water box. When the water inlet pipe touches the bottom, the impurities at the bottom of the water are brought up, which reduces the impurities entering the RO membrane and increases the service life of the RO membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the internal structure of the connector of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the filter element carrier of the present invention; Figure 4 The structure of the blocking mechanism of the present invention is shown in FIG. Figure 1 ; Figure 5 The structure of the blocking mechanism of the present invention is shown in FIG. Figure 2 ; Figure 6 It is a schematic structural diagram of the guide tube of the present invention; Figure 7 It is a structural schematic diagram of the release mechanism of the present invention; Figure 8 The working state of the baffle plate of the present invention is shown in FIG. Figure 1 ; Fig. 9 The working state of the baffle plate of the present invention is shown in FIG. Figure 2 .

[0020] The meaning of each number in the figure is: 100. Connector; 101. Compression chamber; 102. Air storage chamber; 103. Water inlet pipe; 104. Exhaust pipe; 105. First one-way valve; 106. Second one-way valve; 110. Filter; 111. RO membrane; 112. Clean water pipe; 113. Return water pipe; 114. Third one-way valve; 120. Blocking mechanism; 121. Slide; 122. Blocking plate; 123. Through hole; 124. Return spring; 125. Baffle; 126. Connecting spring; 127. Water box; 128. Guide pipe; 130. Release mechanism; 131. Air delivery channel; 132. Slide; 133. Valve stem; 134. Mounting spring; 135. Force rod; 140. Piston block; 141. Rotating shaft; 142. Pressure rod; 143. Transmission rod; 150. Valve. DETAILED DESCRIPTION

[0021] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] When a conventional portable desalination device is first used, the air in the water inlet pipe 103 is sucked in and then discharged, resulting in the air in the water inlet pipe 103 not being utilized. This also results in the need to remove the water inlet pipe 103 from the seawater after use, and then continue to press the portable desalination device multiple times, as mentioned in the above background technology.

[0025] To do this, see Figure 1 and Figure 2 As shown, a portable seawater desalination device is provided, including a connector 100 and a filter 110. Figure 2 The state of the connector 100 in the figure is taken as the standard, a compression chamber 101 is arranged inside the connector 100, an air storage chamber 102 connected to the compression chamber 101 is arranged on the left side, a water inlet pipe 103 connected to the compression chamber 101 is arranged on the right side, a pressure regulating component for changing the internal pressure of the compression chamber 101 is arranged on the top, and a filter 110 connected to the compression chamber 101 is arranged on the bottom; wherein, a first one-way valve 105 is arranged at the connection between the water inlet pipe 103 and the compression chamber 101, the air storage chamber 102 is connected to the compression chamber 101 through the exhaust pipe 104, and a second one-way valve 106 is arranged inside the exhaust pipe 104; in this way, by driving the pressure regulating component to work, the pressure regulating component switches the compression chamber 101 between positive pressure and negative pressure, and cooperates with the one-way delivery of the first one-way valve 105 and the second one-way valve 106. When negative pressure is generated in the compression chamber 101, the compression chamber 101 sucks the air and seawater in the water inlet pipe 103 into the compression chamber 101 through the first one-way valve 105; when positive pressure is generated in the compression chamber 101, the air in the compression chamber 101 enters the air storage chamber 102 through the second one-way valve 106 for storage, and the seawater enters the filter 110 for filtration.

[0026] The control of the movement direction of air and seawater is achieved through the blocking mechanism 120. Therefore, the present invention is provided with a blocking mechanism 120 connected to the air storage chamber 102 at the connection between the compression chamber 101 and the filter 110. The blocking mechanism 120 is used to adjust the connection state between the compression chamber 101 and the filter 110, so that before the seawater enters the compression chamber 101, the air in the water inlet pipe 103 is compressed into the air storage chamber 102 through the pressure regulating component; after the seawater enters the compression chamber 101 through the water inlet pipe 103, the seawater is transported to the filter 110; In addition, a release mechanism 130 is provided between the air storage chamber 102 and the filter 110 . After filtering stops, the compressed gas stored in the air storage chamber 102 enters the filter 110 by opening the release mechanism 130 , and the seawater in the filter 110 is blown out.

[0027] That is to say, the blocking mechanism 120 is provided to guide the air and seawater in the water inlet pipe 103, so that the air in the water inlet pipe 103 can be pre-stored in the air storage chamber 102, thereby realizing the utilization of the air in the water inlet pipe 103, thereby reducing the number of times the user presses the seawater desalination device when cleaning the RO membrane 111, thereby reducing the user's physical energy consumption.

[0028] It is understandable that when the length of the water inlet pipe 103 is longer, the gas storage chamber 102 can store more compressed gas. That is to say, when the stored compressed gas is sufficient, there is no need to press the seawater desalination device, and the RO membrane 111 can be cleaned directly by using the compressed gas in the gas storage chamber 102.

[0029] Specifically, there are many types of pressure regulating components currently, such as the more common piston type, screw type, rotor type, etc. The present invention adopts a piston type pressure regulating component for implementation. Figure 2 and Figure 3 In the illustrated embodiment, the pressure regulating component includes a piston block 140 slidably disposed inside the compression chamber 101, and a driving member for driving the piston block 140 to reciprocate inside the compression chamber 101. The inner ring of the compression chamber 101 is a circular structure to correspond to the shape of the piston block 140. In addition, one end of the compression chamber 101 close to the piston block 140 passes through one side of the connector 100 to facilitate the connection between the piston block 140 and the driving member.

[0030] The drive member can be driven electrically or manually. However, considering that the electric drive mode has high limitations in outdoor places where energy is scarce, in order to improve the use scenarios of the present invention, the drive member of the present invention is preferably driven manually. Specifically, Figure 2 and Figure 3 As shown. The driving member includes a pressure rod 142 with one end rotatably connected to the end of the connector 100, and a transmission rod 143 is rotatably connected between the pressure rod 142 and the piston block 140. By applying a pressing force or a pulling force to the pressure rod 142, the distance between the pressure rod 142 and the piston block 140 is changed, so that the piston block 140 is driven to move accordingly through the transmission rod 143. Among them, the pressure rod 142 and the connector 100 are rotatably connected through a rotating shaft 141, and the rotating shaft 141 is fixedly set in a recess at one end of the connector 100.

[0031] Figure 3 The specific structure of the filter 110 is shown. As shown in the figure, the filter 110 includes a cylindrical shell with a hollow interior, and an RO membrane 111 installed inside the shell; one end of the shell is connected to the compression chamber 101, and the other end is connected to a clean water pipe 112, and the bottom end close to the clean water pipe 112 is connected to a return water pipe 113; wherein, a third one-way valve 114 is provided at the connection between the shell and the compression chamber 101, for allowing the seawater in the compression chamber 101 to enter the shell; the clean water pipe 112 is connected to one end of the central tube of the RO membrane 111.

[0032] like Figure 4As shown, the blocking mechanism 120 includes a slideway 121, one end of which is connected to the air storage chamber 102, and the other end of which passes through the compression chamber 101 and then passes through the side wall of the connector 100, and a blocking plate 122 elastically arranged in the slideway 121. A through hole 123 is arranged on one side of the blocking plate 122. Under normal conditions, the through hole 123 is misaligned with the compression chamber 101. In addition, a water volume sensing mechanism is arranged at the connection between the slideway 121 and the air storage chamber 102; after seawater enters the air storage chamber 102, the compressed gas in the air storage chamber 102 drives the blocking plate 122 to move, so that the through hole 123 is connected to the compression chamber 101. Among them, the blocking plate 122 is slidably connected to the slideway 121, and a return spring 124 is arranged between one end of the blocking plate 122 and one side of the slideway 121 to elastically connect the two.

[0033] The blocking plate 122 is located between the exhaust pipe 104 and the release mechanism 130 .

[0034] Figure 4 and Figure 5 The specific structure of the water volume sensing mechanism is shown. Figure 4 As shown, the water volume sensing mechanism includes a baffle 125 elastically arranged in a longitudinal manner at the connection between the air storage chamber 102 and the slideway 121, and a water box 127 for collecting seawater flowing out of the exhaust pipe 104, and an opening is arranged at the top of the water box 127. Figure 5 The state of the baffle 125 in the embodiment is taken as the standard, and the bottom end of the baffle 125 is bent to the left to form a connection end for supporting the water box 127. The volume of the baffle 125 is larger than the connection between the slideway 121 and the air storage chamber 102, and the side wall of the baffle 125 is in contact with the side wall of the air storage chamber 102 to seal the connection between the slideway 121 and the air storage chamber 102. At the same time, the side wall of the air storage chamber 102 is provided with a longitudinal slide rail, and the baffle 125 slides longitudinally on the side wall of the air storage chamber 102 through the slide rail; a connection spring 126 is provided between the bottom of the connection end of the baffle 125 and the bottom of the air storage chamber 102 to elastically connect the two. In this way, when the weight of the seawater in the water box 127 overcomes the elasticity of the connection spring 126, the water box 127 can drive the baffle 125 to slide down, so that the connection between the slideway 121 and the air storage chamber 102 is opened.

[0035] Moreover, Figure 6 As shown, in order to improve the efficiency of the seawater in the exhaust pipe 104 entering the water box 127, the present invention is provided with a guide pipe 128 at the end of the exhaust pipe 104, with one end facing the water box 127. In this way, the seawater in the exhaust pipe 104 can be guided by the guide pipe 128 during the discharge process and can all flow into the water box 127.

[0036] When the required clean water is obtained, the desalination device can be stopped. At this time, a large amount of compressed gas is stored in the gas storage chamber 102. By delivering the compressed gas to the filter 110, the seawater on the surface of the RO membrane 111 is blown, thereby reducing the residual seawater. Figure 7 The release mechanism 130 includes an air delivery channel 131 which is connected to the air storage chamber 102 at one end and to the compression chamber 101 at the other end, and a slide groove 132 which is arranged at the bottom and longitudinally penetrates the air delivery channel 131, wherein the air delivery channel 131 is located between the blocking mechanism 120 and the filter 110, and a valve stem 133 which has a diameter larger than that of the air delivery channel 131 is slidably arranged in the slide groove 132, and a mounting spring 134 is arranged at the bottom of the valve stem 133, and a force-bearing rod 135 which extends upward at the top and has a height higher than that of the top of the connector 100, and an inward recessed portion is arranged in the middle of the valve stem 133, and by applying a pressing force to the force-bearing rod 135, the recessed portion of the valve stem 133 is moved to the air delivery channel 131, so that the slide groove 132 is connected to the filter 110.

[0037] In the above, the air delivery channel 131 is disposed near the top of the air storage chamber 102 to prevent the seawater in the air storage chamber 102 from being delivered to the filter 110 .

[0038] When the seawater desalination device of the present invention is used, the water inlet pipe 103 is first put into the seawater, and then the pressure rod 142 is pressed and pulled to make the pressure rod 142 perform corresponding reciprocating motion. Since the position between the pressure rod 142 and the piston block 140 changes during the movement, the piston block 140 is driven by the transmission rod 143 to make the piston block 140 perform reciprocating motion in the compression chamber 101. Next, in combination with Figure 8 As shown, the blocking plate 122 intercepts the compression chamber 101 under normal conditions, so that the compression chamber 101 cannot communicate with the filter 110. When the piston block 140 moves upward, the internal space of the compression chamber 101 becomes larger, and negative pressure is generated inside the compression chamber 101, so that the compression chamber 101 sucks the air in the water inlet pipe 103 through the first one-way valve 105; when the piston block 140 moves downward, the piston block 140 compresses the space in the compression chamber 101, so that the gas entering the compression chamber 101 enters the air storage chamber 102 through the exhaust pipe 104.

[0039] As the piston block 140 continues to move, when the gas in the water inlet pipe 103 is exhausted, the seawater will be sucked into the compression chamber 101, and then enter the air storage chamber 102 through the exhaust pipe 104, and flow into the water box 127. At this time, the weight of the seawater in the water box 127 compresses the connecting spring 126, so that the water box 127 drives the baffle 125 to move downward. After the baffle 125 moves downward, the connection between the slide 121 and the air storage chamber 102 is opened. At this time, since there is compressed gas in the air storage chamber 102, the pressure in the air storage chamber 102 is higher than the pressure in the slide 121, so that the baffle 122 is pushed, so that the baffle 122 drives the through hole 123 to move to the compression chamber 101. At this time, the compression chamber 101 is connected to the filter 110 through the through hole 123. So, refer to Fig. 9 When the piston block 140 moves down again, the seawater in the compression chamber 101 flows into the RO membrane 111 through the filter 110, the seawater filtered by the RO membrane 111 flows into the central tube, and then is discharged through the clean water pipe 112, the seawater intercepted by the RO membrane 111 is discharged through the end surface of the RO membrane 111, and then is discharged to the outside through the return pipe 113.

[0040] When the required clean water is obtained, the driving of the pressure rod 142 is stopped, and the force-bearing rod 135 is pressed downward, so that the baffle 125 drives the concave part of the valve stem 133 to move downward to the air delivery channel 131. At this time, the compressed gas in the air storage chamber 102 flows into the compression chamber 101 through the air delivery channel 131, and then flows into the filter 110 through the compression chamber 101. When the high-pressure gas passes through the RO membrane 111, the water remaining on the surface of the RO membrane 111 is blown out and finally discharged through the return pipe 113.

[0041] In addition, the present invention also provides a valve 150 connected to the air storage chamber 102 on the side wall of the connector 100. When the use is finished, the seawater desalination device of the present invention is turned over 180 degrees and then reset, so that the seawater in the water box 127 falls to the bottom of the air storage chamber 102, and then the valve 150 is opened to discharge the seawater in the air storage chamber 102.

[0042] It should be noted that the second one-way valve 106 is preferably a spring one-way valve, the elastic force of which is greater than the pressure of seawater entering the central tube, so as to prevent seawater from continuing to enter the exhaust pipe 104 through the second one-way valve 106 after the through hole 123 is connected to the compression chamber 101.

[0043] Moreover, when the user uses it in shallow water areas such as rivers and beaches, the water inlet pipe 103 is likely to bring up impurities on the bottom of the water when it touches the bottom, causing the impurities to float around the water inlet pipe 103, thereby causing the water inlet pipe 103 to suck in seawater with impurities. The present invention senses the seawater through the water holding box 127, so that the water initially sucked in by the water inlet pipe 103 will be discharged into the water holding box 127, thereby reducing the impurities entering the RO membrane 111 and increasing the service life of the RO membrane 111.

[0044] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only preferred examples of the present invention, and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A portable seawater desalination device, characterized in that: The invention comprises a connector (100), a filter (110) and a pressure regulating component, wherein a compression chamber (101) is arranged inside the connector (100), an air storage chamber (102) which is in one-way communication with the compression chamber (101) is arranged on one side, and a water inlet pipe (103) which is in one-way communication with the compression chamber (101) is arranged on the other side; the pressure regulating component is used to change the internal pressure of the compression chamber (101), and the filter (110) is arranged on one side of the connector (100) and is in communication with the compression chamber (101); A blocking mechanism (120) connected to the air storage chamber (102) is provided at the connection point between the compression chamber (101) and the filter (110). The blocking mechanism (120) is used to adjust the connection state between the compression chamber (101) and the filter (110), so that before the seawater enters the compression chamber (101), the air in the water inlet pipe (103) is compressed into the air storage chamber (102) through the pressure regulating component; after the seawater enters the compression chamber (101) through the water inlet pipe (103), the seawater is transported to the filter (110); A release mechanism (130) is provided between the gas storage chamber (102) and the filter (110); after filtering stops, the release mechanism (130) is opened to allow the compressed gas stored in the gas storage chamber (102) to enter the filter (110), thereby blowing out the seawater in the filter (110).

2. The portable seawater desalination device according to claim 1, characterized in that: A first one-way valve (105) is provided at the connection point between the water inlet pipe (103) and the compression chamber (101); the air storage chamber (102) and the compression chamber (101) are connected via an exhaust pipe (104); a second one-way valve (106) is provided inside the exhaust pipe (104); When negative pressure is generated in the compression chamber (101), the compression chamber (101) draws air and seawater in the water inlet pipe (103) into the compression chamber (101) through the first one-way valve (105); when positive pressure is generated in the compression chamber (101), the air and seawater in the compression chamber (101) can enter the air storage chamber (102) through the second one-way valve (106).

3. The portable seawater desalination device according to claim 1, characterized in that: The pressure regulating component comprises a piston block (140) slidably arranged inside the compression chamber (101), and a driving member used for driving the piston block (140) to perform reciprocating motion inside the compression chamber (101); wherein: The inner circle of the compression chamber (101) is in a circular structure, corresponding to the shape of the piston block (140); one end of the compression chamber (101) close to the piston block (140) passes through one side of the connecting head (100).

4. The portable seawater desalination device according to claim 3, characterized in that: The driving member comprises a pressure rod (142) having one end rotatably connected to the end of the connector (100); a transmission rod (143) rotatably connected between the pressure rod (142) and the piston block (140); by applying a pressing force or a pulling force to the pressure rod (142), the distance between the pressure rod (142) and the piston block (140) is changed, thereby driving the piston block (140) to perform corresponding movement through the transmission rod (143).

5. The portable seawater desalination device according to claim 1, characterized in that: The filter (110) comprises a cylindrical shell with a hollow interior, and an RO membrane (111) installed inside the shell; one end of the shell is connected to the compression chamber (101), the other end is connected to a clean water pipe (112), and the bottom end close to the clean water pipe (112) is connected to a return water pipe (113); wherein: A third one-way valve (114) is provided at the connection point between the shell and the compression chamber (101), for allowing the seawater in the compression chamber (101) to enter the shell; The clean water pipe (112) is connected to one end of the central pipe of the RO membrane (111).

6. The portable seawater desalination device according to claim 2, characterized in that: The blocking mechanism (120) comprises a slideway (121) having one end in communication with the air storage chamber (102) and the other end passing through the compression chamber (101) and then penetrating the side wall of the connector (100), and a blocking plate (122) elastically arranged in the slideway (121); a through hole (123) penetrating therethrough is arranged on one side of the blocking plate (122); and in a normal state, the through hole (123) is misaligned with the compression chamber (101); A water volume sensing mechanism is provided at the connection point between the slideway (121) and the air storage chamber (102); after seawater enters the air storage chamber (102), the compressed gas in the air storage chamber (102) drives the baffle plate (122) to move, so that the through hole (123) is connected to the compression chamber (101); The blocking plate (122) is slidably connected to the slideway (121), and a return spring (124) is provided between one end of the blocking plate (122) and one side of the slideway (121) to elastically connect the two. The baffle plate (122) is located between the exhaust pipe (104) and the release mechanism (130).

7. The portable seawater desalination device according to claim 6, characterized in that: The water volume sensing mechanism comprises a baffle (125) elastically arranged in a longitudinal manner at the connection between the air storage chamber (102) and the slideway (121), and a water storage box (127) for collecting seawater flowing out of the exhaust pipe (104); an opening is arranged at the top of the water storage box (127), and the bottom end of the baffle (125) is bent to one side to form a connection end for supporting the water storage box (127); wherein: The volume of the baffle (125) is larger than the connection point between the slideway (121) and the air storage chamber (102), and the side wall of the baffle (125) fits the side wall of the air storage chamber (102) to seal the connection point between the slideway (121) and the air storage chamber (102); A connecting spring (126) is provided between the bottom of the connecting end of the baffle (125) and the bottom of the gas storage chamber (102) to elastically connect the two. When the weight of the seawater in the water box (127) overcomes the elasticity of the connecting spring (126), the water box (127) drives the baffle (125) to slide down, so that the connection between the slideway (121) and the air storage chamber (102) is opened.

8. The portable seawater desalination device according to claim 7, characterized in that: The end of the exhaust pipe (104) is provided with a guide pipe (128) with one end facing the inside of the water storage box (127).

9. The portable seawater desalination device according to claim 1, characterized in that: The release mechanism (130) comprises an air delivery channel (131) whose one end is in communication with the air storage chamber (102) and whose other end is in communication with the compression chamber (101), and a slide groove (132) disposed at the bottom end and longitudinally penetrating the air delivery channel (131), wherein: The air delivery channel (131) is located between the blocking mechanism (120) and the filter (110); A valve stem (133) having a diameter greater than that of the gas delivery channel (131) is slidably disposed in the slide groove (132); a mounting spring (134) is disposed at the bottom of the valve stem (133); a force-bearing rod (135) is extended upward at the top thereof to be higher than the top of the connector (100); and an inwardly-pointing recessed portion is disposed in the middle of the valve stem (133); by applying a pressing force to the force-bearing rod (135), the recessed portion of the valve stem (133) is moved to the gas delivery channel (131), thereby connecting the slide groove (132) with the filter (110).

10. The portable seawater desalination device according to claim 1, characterized in that: A valve (150) communicating with the air storage chamber (102) is provided on the side wall of the connector (100).

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