Portable water suction filtration device

Abstract

The utility model discloses a portable water quality suction filtration device which comprises a box body and a lifting handle, a storage battery, an air pump and a controller are arranged in the box body, and the storage battery and the air pump are electrically connected with the controller. An outer mounting frame is arranged on the outer side wall of the box body, a sampling water filtering assembly is mounted, a sampling bottle is further arranged outside the box body and sealed through a bottle cap, the top of the bottle cap is communicated with a water outlet pipe, connected with the filtering assembly and connected with a sucking pump through a first sucking pipe, and a one-way air valve is further arranged at the top of the bottle cap. The front end of the box body is closed and communicated with a third exhaust pipe, the rear end of the box body is open, a piston is slidably connected in the cylinder, the front end of the piston is provided with an air seal rubber plug, and the rear end of the piston is fixedly connected with a pull rod. The pull rod penetrates through a through hole in the side wall of the box body and the sliding limiting block. A manual driving mechanism is arranged in the box body to drive the pull rod to move. And the other end of the connecting pipe penetrates out of the box body and is connected with a second exhaust pipe at the top of the bottle cap. The device is provided with a second set of power sources which can provide drawing force when the mobile power supply is abnormal.

Description

TECHNICAL FIELD

[0001] The utility model relates to water quality detection technical field, concretely relates to a portable water quality suction filter device. BACKGROUND

[0002] In water quality detection work, sometimes need to go out, turbid water is quickly sampled and separated, and relatively pure detection water sample is obtained.

[0003] The main model of the currently more commonly used portable water quality suction filter is LB-8301 of Qingdao Lubo or GR5010 of Qingdao Guorui Li Heng, and the portable water quality suction filter mainly comprises a mobile power supply, an air suction pump, a sampling water container, a filter membrane and a sampling bottle.

[0004] However, the existing portable water quality suction filter mainly relies on the mobile power supply for work, and when the work is heavy, the battery capacity is attenuated, and the like, the device cannot be normally used.

[0005] Therefore, a portable water quality suction filter device is designed, which can have a second power source to provide suction force when the mobile power supply is abnormal. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing a portable water quality suction filter device to solve the problems described in the background.

[0007] The technical scheme of the utility model is implemented as follows:

[0008] The utility model provides a portable water quality suction filter device, which comprises a box body and a handle arranged on the outer top wall of the box body, a storage battery, a suction pump and a controller are further arranged in the box body respectively, the storage battery and the suction pump are electrically connected with the controller respectively, an outer mounting rack is further fixedly arranged on the outer side wall of the box body, a sampling water filtering assembly is further arranged on the outer mounting rack, a sampling bottle is further arranged outside the box body, a bottle cap is detachably and sealingly mounted on the sampling bottle, a water outlet pipe is further connected between the top of the bottle cap and the sampling water filtering assembly, a first suction pipe is further connected between the top of the bottle cap and the suction pump, a one-way air valve is further arranged on the top of the bottle cap, a suction cylinder is further fixedly arranged in the box body, a closed surface is arranged at the front end of the suction cylinder, a third suction pipe is arranged in communication on the closed surface, the rear end of the suction cylinder is an open end, a piston is slidably connected in the suction cylinder, a gas sealing rubber plug is fixedly arranged at the front end of the piston, the outer wall of the gas sealing rubber plug is slidably and sealingly connected with the inner wall of the suction cylinder, a pull rod is fixedly arranged at the rear end of the piston, a through hole is formed in the side wall of the box body, a sliding limiting block is further fixedly arranged on the side wall of the box body, the pull rod is slidably connected in the sliding limiting block and passes through the through hole, a manual driving mechanism for driving the pull rod to move forward and backward is further arranged in the box body, a connecting pipe connected with the third suction pipe is further arranged in the box body, a second suction pipe is further connected with the top of the bottle cap, and the connecting pipe is connected with the second suction pipe and passes through the box body.

[0009] When the above scheme is used, the sampling water is filled in the sampling water filtering assembly, when the storage battery works normally, the suction pump is started by the controller, the suction pump draws the air in the sampling bottle through the first suction pipe, so that the sampling water in the sampling water filtering assembly is filtered into the sampling bottle under negative pressure, and the one-way air valve can effectively prevent the negative pressure in the sampling bottle from being too large to damage the filter membrane in the sampling water filtering assembly. When the storage battery cannot work normally, the pull rod can be driven to move backward by the manual driving mechanism, the pull rod drives the piston to move backward, and the piston drives the gas sealing rubber plug to move backward, so that the negative pressure is generated in the suction cylinder, the negative pressure is conducted to the sampling bottle through the third suction pipe, the connecting pipe and the second suction pipe, the negative pressure is generated in the sampling bottle, and then the suction force is provided for the sampling bottle. The electric mode (suction pump) and the manual mode (suction cylinder) are complementary, so that the device can work normally when the power is insufficient or the equipment fails, and the reliability is improved. The manual mode does not need to consume electricity, and is suitable for long-term field operation.

[0010] Further, the manual driving mechanism comprises a straight rack arranged on the upper end of the pull rod, the straight rack extends in the forward and backward directions, the manual driving mechanism further comprises a rotating shaft rotatably arranged on the inner side wall of the box body, a gear is fixedly sleeved on the rotating shaft, the gear is in meshing connection with the straight rack, a worm wheel is further fixedly sleeved on the rotating shaft, the manual driving mechanism further comprises a mounting bracket fixedly arranged on the side wall of the box body, a worm is rotatably arranged on the mounting bracket, the worm is in meshing connection with the worm wheel, one end of the worm further rotatably passes through the box body and is provided with a handle, and a rotating handle is further arranged at the end of the handle.

[0011] When the above scheme is used, the rotating handle is held and rotated, the rotating handle drives the worm to rotate, the worm drives the worm gear to rotate, the worm gear drives the rotating shaft to rotate, and the rotating shaft drives the gear to rotate, and the gear drives the straight rack to move backward to drive the pull rod to move backward. The worm gear transmission mechanism has a large reduction ratio, can convert manual rotation force into a larger linear pulling force, significantly reduces the labor intensity of the operator, and is especially suitable for long-time or frequent filtering operation. The design of the straight rack and the gear ensures the stability and accuracy of the forward and backward movement of the pull rod, avoids jamming or deviation, and the self-locking property of the worm gear prevents the pull rod from rebounding when the operation is stopped, ensures the stability of the negative pressure in the air cylinder, avoids the backflow of water or the interruption of filtering. Meanwhile, the transmission components such as the worm gear, the gear and the rack are integrated on the inner side wall of the box, the internal space of the box is fully utilized, the external protruding structure is avoided, and the overall portability of the device is maintained.

[0012] Further technical solutions are that the mounting bracket includes a horizontal rod fixed on the inner side wall of the box, a first mounting block is fixed at the lower end of the horizontal rod, the mounting bracket further includes a second mounting block fixed on the outer side wall of the box, the front end of the worm is rotatably arranged in the first mounting block, the rear end of the worm is rotatably arranged in the second mounting block and extends out of the side wall of the box, the rear end of the worm is further fixed with a connecting shaft, the shaft diameter of the connecting shaft is smaller than that of the rear end of the worm, the connecting shaft extends out of the second mounting block, the mounting bracket further includes a limiting cover detachably arranged on the rear end of the second mounting block, the connecting shaft is rotatably arranged in the limiting cover and extends out of the rear end, and the rotating handle is arranged on the rear end of the connecting shaft.

[0013] When the above scheme is used, the first mounting block, the second mounting block, the limiting cover and the connecting shaft are arranged, so that the worm is convenient to install and fix.

[0014] Further technical solutions are that the right side of the box is provided with an opening, the right side wall of the box is detachably fixed on the opening, and shaft sleeves are further fixed on the left inner side wall and the right inner side wall of the box, respectively.

[0015] When the above scheme is used, the internal rotating shaft structure is convenient to install.

[0016] Further technical solutions are that the upper end surface of the sliding limiting block is further provided with a sliding groove downward, the pull rod is slidably arranged in the sliding groove, the outer wall of the pull rod is slidably connected with the inner wall of the sliding groove, and the left and right sides of the pull rod are further provided with long and straight limiting grooves extending in the front and back directions, and limiting strips are further arranged on the left and right groove walls of the sliding groove and slidably connected with the limiting grooves.

[0017] When the above scheme is used, the pull rod is accurately positioned and prevented from deviating.

[0018] Further technical solutions are that the inner bottom wall of the box body is further fixed with a lower clamping block, the front and rear sides of the lower clamping block are further respectively fixed with connecting blocks on the inner bottom wall of the box body, the upper end of the lower clamping block is further detachably fixed with an upper clamping block, the joint of the upper clamping block and the lower clamping block is further provided with a mounting groove, the air extraction cylinder is clamped in the mounting groove, the front connecting block of the lower clamping block is further detachably provided with a front limiting block, and the rear connecting block of the lower clamping block is further detachably provided with a rear limiting block.

[0019] When the above scheme is used, through the upper clamping block, the lower clamping block, the front limiting block and the rear limiting block, the air extraction cylinder can be conveniently installed, and the air extraction cylinder can be effectively limited to prevent movement of the air extraction cylinder.

[0020] Further technical solutions are that the front inner side wall of the box body is further detachably provided with a pipe clamp, and the connecting pipe is arranged in the pipe clamp.

[0021] When the above scheme is used, the installation and fixation of the connecting pipe are facilitated.

[0022] Further technical solutions are that the front end of the third air extraction pipe is further fixedly provided with a limiting ring, the third air extraction pipe is further rotatably provided with a nut, the nut is arranged at the rear of the limiting ring, the limiting ring is arranged within the internal range of the nut, the front end of the limiting ring is further provided with a sealing ring, the rear end pipe opening of the connecting pipe is abutted against the limiting ring by extrusion of the sealing ring, the external side of the rear end of the connecting pipe is further provided with an external thread matched with the nut, and the connecting pipe is screwed with the nut.

[0023] When the above scheme is used, the front end of the limiting ring is provided with the sealing ring, and the extrusion effect during screwing of the connecting pipe with the nut ensures complete sealing of the connecting part between the third air extraction pipe and the connecting pipe, prevents gas leakage, and guarantees the negative pressure stability of the air extraction process. The connecting pipe and the nut are connected in a threaded mode, which is simple and fast, and facilitates quick installation or disassembly.

[0024] Further technical solutions are that the limiting cover is screwed on the rear end surface of the second mounting block.

[0025] The utility model discloses the beneficial effect lies in:

[0026] 1, double mode complement, high reliability: electric (air extraction pump) and manual (air extraction cylinder) double mode design, ensure that when the battery power is insufficient or equipment failure, still can normal work, improve the reliability and environmental adaptability of device. Labor saving, suitable for long time operation.

[0027] 2, manual drive mechanism adopts worm gear transmission, has greater speed reduction ratio, converts manual rotation force into greater straight line tension, significantly reduces the labor intensity of operator, is suitable for long time or frequent air extraction operation.

[0028] 3. Compact structure, strong portability: The transmission components such as worm gear and gear rack are integrated on the inner side wall of the box, the internal space is fully utilized, the external protruding structure is avoided, the overall portability of the device is maintained, and the device is suitable for field use.

[0029] 4. Negative pressure stability and efficient filtration: The self-locking characteristic of the worm gear prevents the pull rod from rebounding, ensures the stability of the negative pressure in the suction cylinder, and avoids interruption of filtration; the one-way air valve design prevents damage to the filter membrane due to excessive negative pressure, and ensures the efficiency and safety of the filtration process.

[0030] 5. Smooth operation and precise control: The straight rack and gear meshing design ensures the smoothness and accuracy of the forward and backward movement of the pull rod, avoids jamming or deviation, and the size of the negative pressure can be controlled by the rotation speed of the handle, which is suitable for different filtration requirements. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is the overall schematic diagram of the utility model;

[0032] Figure 2 It is Figure 1 the enlarged view of A in the middle;

[0033] Figure 3 It is the matching cross-sectional view of the sliding limiting block and the pull rod;

[0034] Figure 4 It is the top view of the manual driving mechanism;

[0035] Figure 5 It is Figure 1 the enlarged view of B in the middle.

[0036] In the figure, 1 is a box, 2 is a handle, 3 is a battery, 4 is an upper partition, 5 is an outer mounting frame, 6 is a sampling water filtration assembly, 7 is a lower partition, 8 is a suction pump, 9 is a first suction pipe, 10 is a water outlet pipe, 11 is a bottle cap, 12 is a sampling bottle, 13 is a one-way air valve, 14 is a second suction pipe, 15 is a connecting pipe, 16 is a pipe clamp, 17 is a lower clamp block, 18 is an upper clamp block, 19 is a front limiting block, 20 is a rear limiting block, 21 is a suction cylinder, 22 is a piston, 23 is a gas seal rubber plug, 24 is a pull rod, 25 is a limiting groove, 26 is a straight rack, 27 is a sliding limiting block, 28 is a through hole, 29 is a cross rod, 30 is a first mounting block, 31 is a worm, 32 is a worm gear, 33 is a gear, 34 is a rotating shaft, 35 is a shaft sleeve, 36 is a handle, 37 is a rotating handle, 38 is a third suction pipe, 39 is a nut, 40 is a limiting ring, 41 is a sealing ring, 42 is a second mounting block, 43 is a limiting cover, 44 is a fastening bolt, 45 is a connecting shaft, 46 is a connecting block, and 47 is a sliding groove. DETAILED DESCRIPTION

[0037] In order to better understand the technical content of the utility model, the following specific embodiments are provided, and the utility model is further described in combination with the drawings.

[0038] Referring to Figures 1 to 5 A portable water quality suction filtration device, comprising a rectangular box body 1 and a handle 2 arranged on the outer top wall of the box body 1.

[0039] The right side of the box body 1 is provided with an opening, and the right side wall of the box body 1 is detachably screwed and installed at the opening.

[0040] The box body 1 is further provided with an upper partition plate 4, and the lower side of the upper partition plate 4 is further provided with a lower partition plate 7, and the upper partition plate 4 is provided with a storage battery 3. The lower partition plate 7 is provided with a suction pump 8, and the box body 1 is further provided with a controller. The controller 7 adopts STM32 single-chip microcomputer or SMART200 PLC controller. The storage battery 3 and the suction pump 8 are electrically connected with the controller respectively.

[0041] The outer side wall of the box body 1 is further provided with an outer mounting rack 5, and the outer mounting rack 5 is further provided with a sampling water filtration assembly 6.

[0042] It should be particularly pointed out that the outer mounting rack 5 and the sampling water filtration assembly 6 are structures that have been realized in the prior art, such as the GR-5010 type of Guorui Li Heng or the XY-8050 type of Xinye Environmental Protection, which adopt the outer mounting rack 5 and the sampling water filtration assembly 6 referred to in the present disclosure. The function of the sampling water filtration assembly 6 is mainly used for installing filter membranes and pouring sampling water, so the detailed structure of the outer mounting rack 5 and the sampling water filtration assembly 6 is not described in detail in the present disclosure, and those skilled in the art can use the existing outer mounting rack 5 and sampling water filtration assembly 6 to realize the technical solution in the present disclosure.

[0043] The box body 1 is further provided with a sampling bottle 12, and the sampling bottle 12 is detachably and sealingly provided with a bottle cap 11, and the bottle cap 11 and the sampling bottle 12 are mainly installed in a threaded connection manner. The top of the bottle cap 11 is further communicated with the sampling water filtration assembly 6 through a water outlet pipe 10, the top of the bottle cap 11 is further connected with the suction pump 8 through a first suction pipe 9, and the top of the bottle cap 11 is further provided with a one-way air valve 13.

[0044] The box body 1 is further provided with a suction cylinder 21, the front end of the suction cylinder 21 is provided with a closed surface, the closed surface is communicated with a third suction pipe 38, the rear end of the suction cylinder 21 is an open end, the suction cylinder 21 is slidably connected with a piston 22, the front end of the piston 22 is fixedly provided with a gas seal rubber plug 23, the outer wall of the gas seal rubber plug 23 is slidably and sealingly connected with the inner wall of the suction cylinder 21, and the rear end of the piston 22 is fixedly provided with a pull rod 24.

[0045] Specifically, the inner bottom wall of the box body 1 is further fixed with a lower clamping block 17, and the inner bottom wall of the box body 1 on the front and rear sides of the lower clamping block 17 is further fixed with a connecting block 46, respectively. The upper end of the lower clamping block 17 is further detachably screwed with an upper clamping block 18, and the junction of the upper clamping block 18 and the lower clamping block 17 is further provided with a circular mounting groove, and the air extraction cylinder 21 is clamped in the mounting groove. The connecting block 46 on the front side of the lower clamping block 17 is further detachably screwed with a front limiting block 19, and the connecting block 46 on the rear side of the lower clamping block 17 is further detachably screwed with a rear limiting block 20. The front limiting block 19 abuts against the front end of the air extraction cylinder 21, and the rear limiting block 20 abuts against the rear end of the air extraction cylinder 21.

[0046] The side wall of the box body 1 is provided with a through hole 28, and the side wall of the box body 1 is further fixed with a sliding limiting block 27. The pull rod 24 is slidingly connected in the sliding limiting block 27 and passes through the through hole 28.

[0047] Specifically, the upper end face of the sliding limiting block 27 is further provided with a sliding groove 47 downward, and the pull rod 24 is slidingly arranged in the sliding groove 47. The outer wall of the pull rod 24 and the inner wall of the sliding groove 47 are slidingly connected with each other. The left and right sides of the pull rod 24 are further provided with a long and straight limiting groove 25 extending in the front and rear directions. The left and right groove walls of the sliding groove 47 are further provided with a limiting strip slidingly matched with the limiting groove 25, respectively.

[0048] The box body 1 is further provided with a manual driving mechanism for driving the pull rod 24 to move forward and backward.

[0049] Specifically, the manual driving mechanism comprises a straight rack 26 arranged on the upper end of the pull rod 24, and the straight rack 26 extends in the front and rear directions. The manual driving mechanism further comprises a rotating shaft 34 rotatably arranged on the inner side wall of the box body 1. Specifically, the left and right inner side walls of the box body 1 are further fixed with a shaft sleeve 35, respectively. The two ends of the rotating shaft 34 are rotatably arranged in the shaft sleeves 35 of the left and right inner side walls, respectively. The rotating shaft 34 is fixedly sleeved with a gear 33, and the gear 33 is engaged with the straight rack 26. The rotating shaft 34 is further fixedly sleeved with a worm gear 32.

[0050] The manual driving mechanism further comprises a mounting bracket fixed on the side wall of the box 1, and a worm 31 is rotatably mounted on the mounting bracket and engaged with a worm wheel 32. Specifically, the mounting bracket comprises a crossbar 29 fixed on the inner side wall of the box 1, and a first mounting block 30 is fixed on the lower end of the crossbar 29. The mounting bracket further comprises a second mounting block 42 fixed on the outer side wall of the box 1, the front end of the worm 31 is rotatably arranged in the first mounting block 30, the rear end of the worm 31 is rotatably arranged out of the side wall of the box 1 and rotatably arranged in the second mounting block 42, and a connecting shaft 45 is fixed on the rear end of the worm 31. The shaft diameter of the connecting shaft 45 is smaller than that of the rear end of the worm 31, the connecting shaft 45 is arranged out of the second mounting block 42 in the rear direction, and the mounting bracket further comprises a limiting cover 43 detachably arranged on the rear end of the second mounting block 42. The limiting cover 43 is screwed on the rear end face of the second mounting block 42 by means of fastening bolts 44. The connecting shaft 45 is rotatably arranged in the limiting cover 43 and arranged out of the rear end. A handle 36 is further arranged on the rear end of the connecting shaft 45, and a knob 37 is further arranged on the end of the handle 36.

[0051] A connecting pipe 15 connected with the third air exhaust pipe 38 is further arranged in the box 1, and a second air exhaust pipe 14 is further connected with the top of the bottle cap 11. The end of the connecting pipe 15 is arranged out of the box 1 and connected with the second air exhaust pipe 14.

[0052] Specifically, a pipe clamp 16 is detachably mounted on the front inner side wall of the box 1, and the connecting pipe 15 is clamped in the pipe clamp 16.

[0053] Specifically, a limiting ring 40 is further fixedly sleeved on the front end of the third air exhaust pipe 38, a nut 39 is further rotatably sleeved on the third air exhaust pipe 38, the nut 39 is arranged behind the limiting ring 40, the limiting ring 40 is within the internal range of the nut 39, a sealing ring 41 is further arranged on the front end of the limiting ring 40, the rear end of the connecting pipe 15 is abutted against the limiting ring 40 by extruding the sealing ring 41, and the rear end of the connecting pipe 15 is further provided with an external thread matched with the nut 39, and the connecting pipe 15 is screwed with the nut 39.

[0054] The above merely describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A portable water filtration device, comprising a housing and a handle on the top wall of the housing, wherein the housing is further provided with a battery, an air pump and a controller, the battery and the air pump being electrically connected to the controller, an external mounting bracket being fixed on the outer wall of the housing, a sampling water filtration assembly being provided on the external mounting bracket, a sampling bottle being provided outside the housing, a bottle cap being detachably and sealed on the sampling bottle, the top of the bottle cap being connected to the sampling water filtration assembly via a water outlet pipe, and the top of the bottle cap being connected to the air pump via a first air extraction pipe, characterized in that: The bottle cap is equipped with a one-way valve, and an air extraction cylinder is fixed inside the box. The front end of the air extraction cylinder has a closed surface, and a third air extraction pipe is connected to the closed surface. The rear end of the air extraction cylinder is an open end. A piston is slidably connected inside the air extraction cylinder. An air-sealing rubber stopper is fixed at the front end of the piston. The outer wall of the air-sealing rubber stopper is slidably sealed to the inner wall of the air extraction cylinder. A pull rod is fixed at the rear end of the piston. A through hole is opened on the side wall of the box, and a sliding limit block is also fixed on the side wall of the box. The pull rod is slidably connected in the sliding limit block and passes through the through hole. The box is also equipped with a manual drive mechanism for driving the pull rod to move back and forth. The box is also equipped with a connecting pipe connected to the third air extraction pipe. The top of the bottle cap is also connected to a second air extraction pipe, and the end of the connecting pipe passes through the box and connects to the second air extraction pipe.

2. The portable water filtration device according to claim 1, characterized in that: The manual drive mechanism includes a rack at the upper end of the pull rod, which extends in the front-rear direction. The manual drive mechanism also includes a rotating shaft rotatably mounted on the inner side wall of the housing, on which a gear is fixedly sleeved. The gear meshes with the rack. A worm gear is also fixedly sleeved on the rotating shaft. The manual drive mechanism also includes a mounting bracket fixed on the side wall of the housing, on which a worm is rotatably mounted. The worm meshes with the worm gear. One end of the worm rotatably extends out of the housing and is provided with a handle. The end of the handle is provided with a knob.

3. The portable water filtration device according to claim 2, characterized in that: The mounting bracket includes a crossbar fixed to the inner side wall of the housing, a first mounting block fixed below the end of the crossbar, and a second mounting block fixed to the outer side wall of the housing. The front end of the worm gear rotatably passes through the first mounting block, and the rear end of the worm gear rotatably passes through the side wall of the housing and rotatably passes through the second mounting block. A connecting shaft is also fixed to the rear end of the worm gear. The diameter of the connecting shaft is smaller than the diameter of the rear end of the worm gear. The connecting shaft passes rearward through the second mounting block. The mounting bracket also includes a detachable limiting cover on the rear end of the second mounting block. The connecting shaft rotatably passes through the limiting cover and passes rearward. The rotating handle is located on the rear end of the connecting shaft.

4. The portable water filtration device according to claim 3, characterized in that: The right side of the box has an opening, and the right side wall of the box is detachably fixed at the opening. The left inner side wall and the right inner side wall of the box are also fixed with bushings, and the two ends of the rotating shaft are respectively rotatably inserted into the bushings of the left inner side wall and the right inner side wall.

5. A portable water filtration device according to claim 4, characterized in that: The upper end face of the sliding limit block is also provided with a downward sliding groove. The pull rod slides through the sliding groove, and the outer wall of the pull rod slides and fits against the inner wall of the sliding groove. Long straight limit grooves extending in the front-back direction are also provided on the left and right sides of the pull rod. Limiting strips that slide and fit against the limit grooves are also provided on the left and right sides of the sliding groove.

6. A portable water filtration device according to claim 5, characterized in that: A lower clamping block is fixedly installed on the inner bottom wall of the box. Connecting blocks are also fixedly installed on the inner bottom walls of the box on both the front and rear sides of the lower clamping block. An upper clamping block is detachably fixedly installed on the upper end of the lower clamping block. An installation groove is provided at the joint of the upper and lower clamping blocks. The air pump is clamped in the installation groove. A front limiting block is detachably installed on the connecting block on the front side of the lower clamping block. A rear limiting block is detachably installed on the connecting block on the rear side of the lower clamping block. The front limiting block abuts against the front end of the air pump, and the rear limiting block abuts against the rear end of the air pump.

7. A portable water filtration device according to claim 6, characterized in that: Pipe clamps can be detachably installed on the front inner side wall of the enclosure, and the connecting pipe clamps are located in the pipe clamps.

8. A portable water filtration device according to claim 7, characterized in that: The front end of the third suction pipe is also fixedly fitted with a limiting ring, and a nut is also rotatably fitted on the third suction pipe. The nut is located behind the limiting ring, and the limiting ring is within the inner range of the nut. The front end of the limiting ring is also provided with a sealing ring. The rear end of the connecting pipe abuts against the limiting ring by squeezing the sealing ring. The rear end of the connecting pipe is also provided with an external thread that cooperates with the nut. The connecting pipe and the nut are screwed together.

9. A portable water filtration device according to claim 8, characterized in that: The limiting cover is screwed onto the rear end face of the second mounting block.

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