Double-cylinder continuous water purifier

Abstract

The double-cylinder continuous water purifier comprises a filtering unit, and the filtering unit comprises a raw water inlet and a purified water outlet; the double-cylinder continuous water purifier is further provided with a power device, the power device comprises a shell and a plurality of pistons, at least two pressure cavities are formed in the shell, the pistons are movably arranged in the pressure cavities in a sealed mode and provide pressure and suction force for the pressure cavities, and each pressure cavity is provided with a raw water inlet communicated with the raw water inlet and a raw water outlet communicated with the filtering unit. The piston moves back and forth in the shell to enable each pressure cavity to be switched between a water absorption state and a water pressing state, and when one pressure cavity is in the water pressing state, the other pressure cavity is in the water absorption state, so that the raw water inlet keeps continuous water feeding, and the purified water outlet keeps continuous water discharging; according to the water purifier, the water inlet continuity and the water outlet continuity of the water purifier are guaranteed through synchronous alternate action of the double pistons, the water production amount of the water purifier in unit time is increased, and meanwhile, the user experience is enhanced.

Description

Technical Field

[0001] The present application relates to the field of water purification technology, and in particular to a double-cylinder continuous water purifier. Background Art

[0002] There are various types of water purifiers on the market, but they are mainly divided into electric water purifiers and non-electric water purifiers. Electric water purifiers need to be connected to a power source, while non-electric water purifiers are used without a power source. Among them, the more common non-electric water purifiers are single-cylinder water purifiers, which are usually used in the field or outdoor operations to filter and sterilize field or outdoor water sources, and are often used for rescue operations and outdoor workers.

[0003] The common single-cylinder water purifiers on the market usually include a filtering part and a pressurizing part, wherein the pressurizing part is a single-cylinder type, that is, a pressure chamber is matched with a piston. For example, the patent specification with the announcement number CN112661281A discloses a portable water purification kettle structure, including a kettle body and a piston assembly, wherein the kettle body is provided with a pull rod chamber and a filter element chamber, the pull rod chamber and the filter element chamber are connected to each other, the kettle body is provided with a water outlet connected to the filter element chamber, and a water inlet connected to the pull rod chamber; the piston assembly includes a piston rod and a piston, one end of the piston rod is connected to the piston, the other end of the piston rod is placed outside the kettle body, and the piston is placed in the pull rod chamber so as to be movable up and down; in the above scheme, the piston can produce water only when it is pressed down, and the upward movement process of the piston is in a water absorbing state, at which time no water is produced, so that the water production is discontinuous, and the water production per unit time is low. At the same time, the pressurizing structure is a single-cylinder structure, and the cylinder body volume itself is small, so the water production is further limited.

[0004] In order to increase the amount of water produced per unit time, the pressurizing part of the existing water purifier also adopts a double-cylinder type. For example, the patent specification with announcement number CN213096714U discloses a pressurizing structure of an outdoor portable water purification cup, and the pressurizing structure includes a piston, and the piston includes a piston rod, a piston cover and a piston tube, wherein two pistons are provided; the above scheme can increase the amount of water produced per unit time by providing two pistons, but the working states of the two pistons are completely consistent, that is, the suction and pressure actions are performed synchronously. Similarly, water is not produced during the suction process, that is, the water production is also discontinuous, which affects the user experience. Summary of the invention

[0005] The present application provides a dual-cylinder continuous water purifier, which ensures the continuity of water inlet and outlet of the water purifier through the synchronous alternating action of dual pistons, increases the water production of the water purifier per unit time, and enhances the user experience.

[0006] The technical solution adopted in this application is:

[0007] A double-cylinder continuous water purifier, comprising:

[0008] A filter unit, the filter unit comprising a raw water inlet and a clean water outlet;

[0009] The double-cylinder continuous water purifier is also provided with:

[0010] A power device, the power device comprising a housing and a plurality of pistons, the housing being provided with at least two pressure chambers, the pistons being movably and sealingly arranged in the pressure chambers to provide pressure and suction for the pressure chambers, each of the pressure chambers being respectively provided with a raw water inlet connected to the raw water inlet and a raw water outlet connected to the filter unit;

[0011] The piston reciprocates in the shell to switch each of the pressure chambers between a water absorption state and a water pressure state, and when one pressure chamber is in a water pressure state, the other pressure chamber is in a water absorption state; when the rear pressure chamber changes from a water absorption state to a water pressure state, the front pressure chamber changes from a water pressure state to a water absorption state, so that the raw water inlet maintains continuous water inflow and the clean water outlet maintains continuous water outflow.

[0012] The double-cylinder continuous water purifier in this application also has the following additional technical features:

[0013] The power device also includes:

[0014] A power connecting rod, wherein the power connecting rod has a fixed shaft hinged to the housing, and the power connecting rod swings and rotates reciprocatingly on the fixed shaft;

[0015] An articulated connecting rod, through which the plurality of pistons are respectively articulated to the power connecting rod;

[0016] When two pressure chambers are provided in the housing, the articulated link comprises a first articulated link and a second articulated link, the first articulated link is articulated with the power link via a first articulated shaft, and the second articulated link is articulated with the power link via a second articulated shaft;

[0017] The first hinge shaft and the second hinge shaft are respectively located on both sides of the fixed shaft with a set distance. The power connecting rod takes the fixed shaft as the rotation center, applies pressure to the first hinge shaft, and applies tension to the second hinge shaft. When the first piston connected to the first hinge shaft moves to the pressure limit position, the power connecting rod rotates in the opposite direction, applies tension to the first hinge shaft, and applies pressure to the second hinge shaft, until the second piston connected to the second hinge shaft moves to the pressure limit position.

[0018] The other end of the first articulated connecting rod is articulated to the first piston, and the other end of the second articulated connecting rod is articulated to the second piston. Under the drive of the power connecting rod, the first piston moves linearly in the first pressure chamber, and the second piston moves linearly in the second pressure chamber;

[0019] When the first pressure chamber is in a water-compressing state and the second pressure chamber is in a water-absorbing state, at a preset movement frequency, the water-compressing pressure of the first piston is P1, and the water-absorbing pressure of the second piston is P2, and P1:P2=(40~120):1.

[0020] The power device is also provided with an operating rod connected to the power connecting rod, the operating rod is connected to the single end of the power connecting rod, the operating rod has an operating part, the operating part is separated from the fixed axis to form a power arm, and the articulated connecting rod is separated from the fixed axis to form a piston arm.

[0021] The operating rod is movably connected to the power connecting rod, and the operating rod has a working state and a storage state relative to the power connecting rod. In the working state, the operating rod is positioned and fixed at the end of the power connecting rod, and the length direction of the operating rod and the length direction of the power connecting rod extend in the same direction; in the storage state, the operating rod rotates relative to the power connecting rod and is folded and stored on one side of the shell.

[0022] The double-cylinder continuous water purifier is a manual pressure water purifier, the manual pressure applied by the arm to the operating rod is F1, the total water pressure and water suction force of the multiple pistons is F2, and F1:F2=1:(5~20).

[0023] The multiple pressure chambers are arranged longitudinally, and the multiple pistons reciprocate alternately in the vertical direction. The filter unit is located below the pressure chamber, and the raw water outlet is located at the bottom of the pressure chamber. The raw water outlet is provided with a water outlet control valve, and the water outlet control valve is configured to close the raw water outlet when the pressure chamber is in a water absorption state, and open the raw water outlet when the pressure chamber is in a water pressure state.

[0024] When the piston moves to the pressure limit position in the pressure chamber, the pressure chamber has a surplus water storage chamber, the raw water inlet is arranged in the surplus water storage chamber, and the raw water inlet is provided with a water inlet control valve. The water inlet control valve is configured to open the raw water inlet when the pressure chamber is in a water absorption state, and close the raw water inlet when the pressure chamber is in a water pressure state; in a single pressure chamber, either the water inlet control valve or the water outlet control valve is selectively opened.

[0025] When the piston moves to the suction limit position in the pressure chamber, the pressure chamber has a maximum chamber height H, the residual water storage chamber height is h, the diameter of the piston is d, H / d=1-2.75, and h / d=0.2-0.8.

[0026] The double-cylinder continuous water purifier is also provided with a cylinder body and a base;

[0027] The cylinder is connected to the bottom of the power device, the filter unit is located in the cylinder, a filter front end water cavity of the filter unit is formed between the cylinder and the filter unit, and the filter front end water cavity is connected to the raw water outlet;

[0028] The base is fixed below the cylinder, and a clean water channel communicating with the rear-end water cavity of the filter unit is provided on the base, and the clean water outlet is located at the end of the clean water channel.

[0029] Due to the adoption of the above technical solution, the technical effects achieved by this application are:

[0030] 1. The double-cylinder continuous water purifier provided in the present application has a power device for the user to pressurize the operation, and the external raw water is pressurized and transported to the filter unit, so that the raw water is filtered into the filter unit and then output as purified water. Specifically, the power device forms two pressure chambers through the cooperation of the piston and the shell. During the reciprocating movement of the piston in the shell, one of the two pressure chambers is in the water absorption state, that is, the negative pressure state, and the other corresponds to the water pressure state, that is, the positive pressure state. Therefore, for the pressure chamber in the water absorption state, the raw water inlet of the pressure chamber can be selectively controlled to open and the raw water outlet can be closed. At this time, the power device can pump water from the external water source connected to the raw water inlet into the pressure chamber for storage. When the pressure chamber changes from the water absorption state to the water pressure state, the raw water inlet can be selectively controlled to close and the raw water outlet can be opened. Since the raw water outlet is connected to the raw water inlet, the raw water stored in the pressure chamber can enter the filter unit under the pushing action of the piston to achieve filtration. Therefore, since the states of the two pressure chambers are just opposite, while one of the pressure chambers in the water absorption state obtains raw water from the external water source, the other pressure chamber in the water pressure state can transport raw water to the filter unit. The two pressure chambers alternately transport raw water to the filter unit, and then during the reciprocating movement of the piston, the filter unit can discharge water continuously, which solves the problem of intermittent water discharge and helps to increase the water flow rate. The water output per unit time is large, making the operation of the dual-cylinder continuous water purifier more time-saving and labor-saving.

[0031] 2. The two pistons of the present application respectively form a pressure chamber with the shell, and the two pistons need to be controlled to move at the same time and form alternating reciprocating motion to make one of the two pressure chambers in the water absorption state and the other in the water pressure state. Therefore, by connecting the two pistons through a linkage structure, it is only necessary to drive the linkage structure to move. Correspondingly, the present application only needs to drive the power connecting rod and the articulated connecting rod to realize the alternating reciprocating motion of the two pistons, which helps to simplify the structure and improve the ease of operation.

[0032] 3. In the present application, one end of the articulated connecting rod is articulated to the power connecting rod, and the other end is articulated to the piston, so that when the power connecting rod rotates around the fixed axis, the pivot connection with the articulated connecting rod ensures that the articulated connecting rod moves linearly and drives the piston to move linearly. Therefore, the reciprocating stroke of the piston relative to the shell is a linear stroke, the operation is more stable, and the pressure chamber can be formed into a simple cylindrical or columnar shape as a whole, which simplifies the structure.

[0033] 4. When the piston of the present application moves to the pressure limit position in the pressure chamber, the pressure chamber also has a surplus water storage chamber, and the raw water inlet is arranged in the surplus water storage chamber. The raw water inlet is provided with a water inlet control valve, that is, the piston can be stopped by the convex rib on the top of the surplus water storage chamber during the movement of the pressure chamber, thereby ensuring the connection between the surplus water storage chamber and the raw water inlet, that is, the piston will not completely block the raw water inlet, thereby avoiding the problem of difficulty in absorbing water caused by the blockage of the raw water inlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0035] Figure 1 An assembly diagram of a double-cylinder continuous water purifier provided in an embodiment of the present application;

[0036] Figure 2 An exploded view of a double-cylinder continuous water purifier provided in an embodiment of the present application;

[0037] Figure 3 A cross-sectional view of a double-cylinder continuous water purifier provided in an embodiment of the present application Figure 1 ;

[0038] Figure 4 A cross-sectional view of a double-cylinder continuous water purifier provided in an embodiment of the present application Figure 2 ;

[0039] Figure 5 A schematic diagram of the structure of the power connecting rod provided in an embodiment of the present application;

[0040] Figure 6 A schematic diagram of the structure of the support base provided in the embodiment of the present application;

[0041] Figure 7 A schematic diagram of the structure of a piston provided in an embodiment of the present application;

[0042] Figure 8 A schematic diagram of the structure of the hinged connecting rod provided in an embodiment of the present application;

[0043] Fig. 9 A cross-sectional view of a double-cylinder continuous water purifier provided in an embodiment of the present application Figure 3 ;

[0044] Fig.10 for Fig. 9 A partial enlarged view of the structure at A in the middle;

[0045] Fig.11 The structure of the housing provided in the embodiment of the present application is shown in FIG. Figure 1 ;

[0046] Fig.12 The structure of the housing provided in the embodiment of the present application is shown in FIG. Figure 2 .

[0047] List of parts and reference numerals:

[0048] 1 filtering unit, 11 raw water inlet, 12 purified water outlet, 13 base, 131 purified water channel, 14 reverse osmosis filter element, 15 cylinder body;

[0049] 2 housing, 21 connecting seat, 22 piston cylinder, 221 limiting rib;

[0050] 3 pistons;

[0051] 4 pressure chamber, 41 raw water inlet, 42 raw water outlet, 43 surplus water storage chamber;

[0052] 5 power connecting rod, 51 connecting part, 52 linkage part, 53 fixed shaft;

[0053] 6 support seat, 61 bottom plate, 62 support plate;

[0054] 7 articulated link, 71 first articulated link, 72 second articulated link, 73 first articulated axis, 74 second articulated axis;

[0055] 8 operating levers;

[0056] 9 water outlet control valve, 91 valve housing, 92 valve core, 93 spring;

[0057] 10 Water inlet control valve. DETAILED DESCRIPTION

[0058] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0059] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0060] In addition, in the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "lateral", "longitudinal", etc., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to 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 application.

[0061] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0062] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0063] In the embodiment of the present application, a double-cylinder continuous water purifier is provided. For the convenience of explanation and understanding, the following contents provided in the present application are all explained on the basis of the illustrated product structure. Of course, it can be understood by those skilled in the art that the above structure is only used as a specific example and schematic description, and cannot constitute a specific limitation on the technical solution provided in the present application.

[0064] Reference Figures 1 to 12As shown, a dual-cylinder continuous water purifier provided in the present application includes a filter unit 1 and a power device, wherein the filter unit 1 includes a raw water inlet 11 and a clean water outlet 12; the power device includes a shell 2 and a plurality of pistons 3, at least two pressure chambers 4 are provided in the shell 2, and the pistons 3 are movably and sealedly arranged in the pressure chambers 4 to provide pressure and suction for the pressure chambers 4, and each of the pressure chambers 4 is respectively provided with a raw water inlet 41 connected to the raw water inlet 11 and a raw water outlet 42 connected to the filter unit 1.

[0065] The piston 3 reciprocates in the housing 2 to switch each of the pressure chambers 4 between the water absorption state and the water pressure state, and when one pressure chamber 4 is in the water pressure state, the other pressure chamber 4 is in the water absorption state; when the rear pressure chamber 4 is changed from the water absorption state to the water pressure state, the front pressure chamber 4 is changed from the water pressure state to the water absorption state, so that the raw water inlet 11 maintains continuous water inflow, and the clean water outlet 12 maintains continuous water outflow. Specifically, the raw water inlets 41 of the two pressure chambers 4 can be connected to an external water source storing raw water, wherein the two raw water inlets 41 can be connected to one external water source respectively, or can be connected to the same external water source.

[0066] In the double-cylinder continuous water purifier provided in the present application, the power device is used for the user to pressurize the operation, and the external raw water is pressurized and transported to the filter unit 1, so that the raw water is filtered in the filter unit 1 and then output as purified water. Specifically, the power device cooperates with the housing 2 through the piston 3 to form two pressure chambers 4. During the reciprocating movement of the piston 3 in the housing 2, one of the two pressure chambers 4 is in a water absorption state, that is, a negative pressure state, and the other corresponds to a water pressure state, that is, a positive pressure state. Therefore, for the pressure chamber 4 in the water absorption state, the raw water inlet 41 of the pressure chamber 4 can be selectively controlled to open and the raw water outlet 42 can be closed. At this time, the power device can pump water from the external water source connected to the raw water inlet 41 into the pressure chamber 4 for storage. When the pressure chamber 4 changes from the water absorption state to the water pressure state, the raw water inlet 41 can be selectively controlled to be closed and the raw water outlet 42 can be opened. Since the raw water outlet 42 is connected to the raw water inlet 11, the raw water stored in the pressure chamber 4 can enter the filter unit 1 under the driving action of the piston 3 to achieve filtration. Therefore, since the states of the two pressure chambers 4 are always opposite, while one of the pressure chambers 4 in the water absorption state obtains raw water from the external water source, the other pressure chamber 4 in the water pressure state can transport raw water to the filter unit 1. The two pressure chambers 4 alternately transport raw water to the filter unit 1, and then during the reciprocating movement of the piston 3, the filter unit 1 can discharge water continuously, which solves the problem of intermittent water discharge and helps to increase the water discharge flow rate. The water output per unit time is large, making the operation of the dual-cylinder continuous water purifier more time-saving and labor-saving.

[0067] As a preferred embodiment, Figure 2 , Figure 3 and Figure 4 As shown, the power device also includes a power connecting rod 5 and an articulated connecting rod 7, the power connecting rod 5 has a fixed shaft 53 hinged to the shell 2, and the power connecting rod 5 swings and rotates reciprocatingly on the fixed shaft 53; the multiple pistons 3 are respectively hinged to the power connecting rod 5 through the articulated connecting rod 7; when two pressure chambers are provided in the shell 2, the articulated connecting rod 7 includes a first articulated connecting rod 71 and a second articulated connecting rod 72, the first articulated connecting rod 71 is articulated to the power connecting rod 5 through a first articulated shaft 73, and the second articulated connecting rod 72 is articulated to the power connecting rod 5 through a second articulated shaft 74.

[0068] The first hinge shaft 73 and the second hinge shaft 74 are respectively located on both sides of the fixed shaft 53 with a set interval. The power connecting rod 5 takes the fixed shaft 53 as the rotation center, applies pressure to the first hinge shaft 73, and applies tension to the second hinge shaft 74. When the first piston connected to the first hinge connecting rod 71 moves to the pressure limit position, the power connecting rod rotates in the opposite direction, applies tension to the first hinge shaft 73, and applies pressure to the second hinge shaft 74, until the second piston connected to the second hinge connecting rod 72 moves to the pressure limit position.

[0069] In order to ensure that the power connecting rod 5 and the articulated connecting rod 7 move steadily, the power device also includes a support seat 6, such as Figures 1 to 3 as well as Figure 5 and Figure 6As shown, the support seat 6 is fixedly installed on the shell 2, and the power connecting rod 5 has a connecting portion 51 and a linkage portion 52 respectively located on both sides of the connecting portion 51. The connecting portion 51 is pivotally connected to the support seat 6 through a fixed shaft 53, and the first hinged link 71 and the second hinged link 72 are pivotally connected to the two linkage portions 52 respectively through the first hinge shaft 73 and the second hinge shaft 74. Specifically, the two sides of the support seat 6 can be fixed to the housing 2 by screws, the power connecting rod 5 is pivotally connected to the support seat 6 through the connecting portion 51, and the two pistons 3 are connected to the two linkage parts 52 in a one-to-one correspondence. Since the two linkage parts 52 are respectively located on both sides of the connecting portion 51, when the connecting portion 51 rotates relative to the support seat 6, the two linkage parts 52 form an alternating reciprocating movement in the form of one rise and one fall. When one piston 3 is pushed toward the pressure chamber 4, its corresponding pressure chamber 4 becomes a water-pressing state, and when the other piston 3 is pulled out relative to the pressure chamber 4, its corresponding pressure chamber 4 becomes a water-absorbing state. The user only needs to control the rotation of the power connecting rod 5 to realize the linkage of the two pistons 3, which is convenient to operate and improves the use effect. Preferably, the two pressure chambers 4 can be arranged side by side, and the support seat 6 is installed between the two pressure chambers 4. After the power connecting rod 5 is pivotally connected to the support seat 6 through the connecting portion 51, the linkage parts 52 on both sides just correspond to the two pressure chambers 4 in a one-to-one manner.

[0070] Regarding the structure of the support seat 6, in a preferred embodiment, as shown in FIG. Figure 6 As shown, the support seat 6 includes a bottom plate 61 and two support plates 62 vertically arranged on the bottom plate 61, the bottom plate 61 is connected to the housing 2, and the connecting portion 51 is sandwiched between the two support plates 62 and is pivotally connected to the support plates 62 through a fixed shaft 53. Specifically, the bottom plate 61 can be fixedly connected to the housing 2 by screws, and the connecting portion 51 and the support plates 62 on both sides are provided with rotation holes, and the fixed shaft 53 is passed through the rotation holes provided in the connecting portion 51 and the support plates 62 on both sides to realize the pivotal connection between the connecting portion 51 and the support plates 62.

[0071] In a preferred embodiment, Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, the other end of the first articulated link 71 is articulated to the first piston, and the other end of the second articulated link 72 is articulated to the second piston. Driven by the power connecting rod 5, the first piston moves in a straight line in the first pressure chamber, and the second piston moves in a straight line in the second pressure chamber.

[0072] Those skilled in the art can understand that when the power connecting rod 5 rotates around the support seat 6, the linkage part 52 makes a circular motion. If the linkage part 52 is fixedly connected to the articulated connecting rod 7, the linkage part 52 will drive the articulated connecting rod 7 to make a circular motion. At the same time, the articulated connecting rod 7 will also drive the piston 3 to make a circular motion. The reciprocating trajectory of the piston 3 is complicated. Therefore, the present application makes the linkage part 52 pivotally connected to the articulated connecting rod 7, and the articulated connecting rod 7 pivotally connected to the piston, so that even during the process of the linkage part 52 making a circular motion, the articulated connecting rod 7 can be rotated relative to the linkage part 52 to ensure the linear movement of the articulated connecting rod 7, thereby driving the piston 3 to move in a linear manner. Therefore, the reciprocating stroke of the piston 3 relative to the housing 2 is a linear stroke, the operation is more stable, and the pressure chamber 4 can be formed into a simple cylindrical or columnar shape as a whole, thereby simplifying the structure.

[0073] When the first pressure chamber is in a water pressure state and the second pressure chamber is in a water absorption state, the water pressure of the first piston is P1 and the water absorption pressure of the second piston is P2 at the preset movement frequency of the piston, and P1: P2 = (40-120): 1. According to calculations, the pre-membrane pressure of the filter unit 1 of the present application needs to meet (0.4-1.2) MPa, that is, the water pressure of the first piston is (0.4 -1.2) MPa. In the use scenario of the double-cylinder continuous water purifier of the present application, the water absorption height does not exceed 1m, so the water absorption pressure does not exceed 0.01MPa, that is, the water absorption pressure of the second piston does not exceed 0.01MPa. Since the piston movement frequency is too high, the water pressure increases accordingly, so the aforementioned preset movement frequency is controlled at 60-120 times / min, which can meet the pre-membrane pressure requirements without being too laborious. The pre-membrane pressure depends on the selection of the filter membrane. For the manual device of this application, the selection of the pre-membrane pressure of the filter membrane needs to take into account the manual operating force and the filtering effect. If a relatively high pre-membrane pressure is selected, the manual water pressure operation force is too large, which is not conducive to the working continuity of the operating lever; if a lower pre-membrane pressure is selected, the water quality filtering effect is greatly reduced in outdoor use scenarios. Taking into account the water quality effect and the feasibility of manual operation, this application selects the pre-membrane pressure of the filter unit 1 as (0.4-1.2) MPa, preferably (0.6-1) MPa, and P1:P2 is preferably (60~100):1.

[0074] In a preferred embodiment, Figures 1 to 3 As shown, the power device is also provided with an operating rod 8 connected to the power connecting rod 5, and the operating rod 8 is connected to the single-side end of the power connecting rod 5, and the operating rod 8 has an operating part, and the operating part forms a power arm at a distance from the fixed axis 53, and the articulated connecting rod 7 forms a piston arm at a distance from the fixed axis 53.

[0075] In a preferred embodiment, the operating rod 8 is movably connected to the power connecting rod 5, and the operating rod 8 has a working state and a storage state relative to the power connecting rod 5. In the working state, the operating rod 8 is positioned and fixed at the end of the power connecting rod 5, and the length direction of the operating rod 8 and the length direction of the power connecting rod 5 extend in the same direction; in the storage state, the operating rod 8 rotates relative to the power connecting rod 5 and is folded and stored on one side of the shell 2.

[0076] In a preferred embodiment, the double-cylinder continuous water purifier is a manual pressure water purifier, the manual pressure applied by the arm to the operating rod 8 is F1, the total water pressure and water suction force of the multiple pistons 3 is F2, and F1:F2=1:(5-20).

[0077] Since the water suction force is very small compared to the water pressure, the ratio of F1 to F2 can be directly understood as the ratio between the manual pressure and the water pressure of the piston 3; and can then be converted into the ratio of the piston arm to the power arm. The power arm is L1 long, and the piston arm is L2 long. The ratio of L1 to L2 is preferably controlled within a range of 5-20. The operating lever is an extended arm movably connected to the end of the power connecting rod. Although it helps to reduce the manual operating force, it should not be too long. When the operating lever is positioned and fixed at the end of the power connecting rod as a power arm, the center of gravity of the entire machine shifts due to the extension of the operating lever. For example, before the machine works, the center of gravity of the entire machine in the non-water-absorbing state moves to outside the projection area of ​​the base on the ground, and the water purifier has a problem of center of gravity stability. Therefore, the length of the operating lever arm is reasonably controlled, and the ratio of the manual pressure F1 to the total of the water pressure and the water suction force F2 is limited to the interval range of 1:(5-20). The optimal ratio of the operating force to the center of gravity of the machine body can be obtained.

[0078] As a preferred embodiment of the present application, the multiple pressure chambers 4 are arranged longitudinally, the multiple pistons 3 reciprocate alternately in the vertical direction, the filter unit 1 is located below the pressure chamber 4, the raw water outlet 42 is located at the bottom of the pressure chamber 4, and the raw water outlet 4 is provided with a water outlet control valve 9, and the water outlet control valve 9 is configured to close the raw water outlet 42 when the pressure chamber 4 is in a water absorption state, and open the raw water outlet 42 when the pressure chamber 4 is in a water pressure state.

[0079] Regarding the structure of the water outlet control valve 9, in a preferred embodiment, as shown in FIG. Fig. 9 and Fig.10As shown, the water outlet control valve 9 is a check valve composed of a valve housing 91, a valve core 92 and a spring 93. The valve core 92 is installed in a water flow channel provided in the valve housing 91. The spring 93 is provided between the valve core 92 and the valve housing 91. The valve core 92 is subjected to force and can switch between closing the water flow channel and opening the water flow channel. Specifically, the valve core 92 is subjected to force to open the water flow channel while compressing the spring 93. When the force on the valve core 92 disappears, the spring 93 drives the valve core 92 to reset and close the water channel again.

[0080] As a preferred embodiment of the present application, when the piston 3 moves to the pressure limit position in the pressure chamber 4, the pressure chamber 4 has a residual water storage chamber 43, the raw water inlet 41 is arranged in the residual water storage chamber 43, and the raw water inlet 41 is provided with a water inlet control valve 10, and the water inlet control valve 10 is configured to open the raw water inlet 41 when the pressure chamber 4 is in a water absorption state, and close the raw water inlet 41 when the pressure chamber 4 is in a water pressure state; in a single pressure chamber 4, the water inlet control valve 10 and the water outlet control valve 9 are selectively opened.

[0081] The water inlet control valve 10 can be selected to have the same structure as the water outlet control valve 9. When the pressure chamber 4 is in a water absorption state, the valve core 92 of the water inlet control valve 10 moves under the action of negative pressure to open the water flow channel, allowing external raw water to enter the pressure chamber 4, and the valve core 92 of the water outlet control valve 9 closes the water flow channel under the action of negative pressure; when the pressure chamber 4 is in a pressure state, the valve core 92 of the water inlet control valve 10 closes the water flow channel, preventing external raw water from entering the pressure chamber 4, and the valve core 92 of the water outlet control valve 9 opens the water flow channel, allowing the raw water in the pressure chamber 4 to enter the filter unit 1.

[0082] The design of the surplus water storage chamber 43 is as follows: Figure 3 and Fig.11 As shown, the housing 2 is provided with a limiting rib 221 protruding toward the pressure chamber 4, and the piston 3 can be stopped by the limiting rib 221 during the movement in the direction of turning the pressure chamber 4 into a water-pressurized state. A plurality of limiting ribs 221 are arranged at intervals along the circumference of the housing 2, and the raw water inlet 41 is opened between two adjacent limiting ribs 221. Figure 3Taking the state shown as an example, when the right piston 3 moves downward to change the pressure chamber 4 into a pressure state, when the piston 3 contacts the limiting rib 221, it is stopped and cannot move further downward. Through the stopping effect of the limiting rib 221, on the one hand, the movement of the piston 3 is stopped to form an extreme position of the piston 3. On the other hand, since the raw water inlet 41 is opened between two adjacent limiting ribs 221, after the piston 3 is stopped by the limiting rib 221, a part of the space in the pressure chamber 4, namely, the residual water storage chamber 43, can be retained, ensuring that the residual water storage chamber 43 is connected with the raw water inlet 41 to avoid the problem of difficulty in absorbing water caused by the blockage of the raw water inlet 41. Then, when the piston 3 moves in the direction of changing the pressure chamber 4 into a water absorbing state, the external water source can enter the pressure chamber 4 through the raw water inlet 41. As for the stop limit of the piston 3 moving in the direction of changing the pressure chamber 4 into a water absorbing state, it can be achieved by controlling the length of the linkage part 52 and the length of the articulated connecting rod 7 within a reasonable range to prevent the piston 3 from coming out of the housing 2.

[0083] As a preferred embodiment of the present application, when the piston 3 moves to the suction limit position in the pressure chamber 4, the pressure chamber 4 has a maximum chamber height H, the residual water storage chamber 43 has a height h, the diameter of the piston 3 is d, H / d=1-2.75, and h / d=0.2-0.8.

[0084] The height and diameter of the pressure chamber 4 of the present application determine the capacity of a single pressure chamber, but under the same capacity, the ratio of the height to the diameter of the chamber, that is, the diameter-to-height ratio of the pressure chamber, determines the pressure under the working state of the single chamber. Increasing the diameter size and reducing the diameter-to-height ratio can reduce the kinetic energy consumption of raw water to overcome the gravity of the water source when entering the pressure chamber, and effectively reduce the kinetic energy consumption of the chamber under water absorption conditions, but the large-diameter piston area will increase the working pressure of the single chamber, especially the pressure during the water pressure process; while reducing the piston and cavity diameters can effectively reduce the water pressure, and the piston force is more concentrated, which is more conducive to increasing the pressure before the filter membrane, but such a setting will increase the cavity height, and the suction force under water absorption conditions will be increased; since the present application adopts multiple pressure chambers, water absorption and water pressure conditions are carried out simultaneously. Therefore, when designing the structure, the kinetic energy consumption under alternating working conditions is simultaneously considered, and the ratio of H / d is selected as 1-2.75, thereby obtaining a better diameter-to-height ratio range for kinetic energy utilization.

[0085] The volume of the residual water storage chamber 43 also affects the water production efficiency. When the residual water storage chamber is enlarged, if the active volume in the chamber (i.e. the difference between the highest chamber height H and the residual water storage chamber height h) is smaller than the residual water storage volume, the residual water in the chamber is greater than the raw water inflow into the chamber. When the chamber is pressurized to the pressure limit, the residual water in the chamber is in a compressed state. At this time, the chamber is about to change into a water absorption state. In the process of the residual water being in the compressed state to the water absorption state where the pressure is gradually released, the volume of the residual water increases. The larger the residual water volume, the longer the pressure release process and the greater the volume increase. In this process, the kinetic energy of the chamber to absorb water from the raw water inlet is significantly reduced, which will cause a short pause in the raw water inflow from the outside of the machine. At the same time, in the process of the residual water in the chamber increasing in volume, unnecessary water turbulence will be generated, which will consume the kinetic energy conversion. Therefore, the volume of the residual water should not be too high. Then, under the condition of the same surplus water storage volume, there is also a kinetic energy relationship between the height of the surplus water storage chamber and the piston diameter. In the technical solution of the present application, the raw water inlet is arranged on the inner wall of the surplus water storage chamber. The larger the piston diameter is, the more conducive it is to the increase in the flow rate of the raw water inlet. According to the Venturi effect, when the raw water enters the surplus water storage chamber from the raw water inlet, the water flow space is enlarged and the flow rate is increased, which is conducive to the suction of the raw water. It can also be seen from the technical solution of the application that the suction pressure is much smaller than the pressure pressure, but an excessively large piston diameter will form a higher water flow obstacle for the process of raw water in the cavity being discharged from the raw water outlet. In the process of flowing from the large-diameter cavity to the small-diameter tube body, the friction between the water flow and the inner wall of the cavity under pressure is increased. Through the verification of multiple data of the technical solution of the present application, the present application selects an extremely small range of h / d=0.2-0.8 to achieve the optimal kinetic energy utilization efficiency.

[0086] As a preferred implementation of the present application, Figure 1 , Figure 2 , Figure 3 , Fig.11 and Fig.12 As shown, the double-cylinder continuous water purifier is also provided with a cylinder 15 and a base 13; the cylinder 15 is connected to the bottom of the power device, the filter unit 1 is located in the cylinder 15, and a filter front end water cavity of the filter unit is formed between the cylinder 15 and the filter unit 1, and the filter front end water cavity is connected to the raw water outlet 42.

[0087] The base 13 is fixed below the cylinder 15 , and is provided with a clean water channel 131 communicating with the rear filtration water cavity of the filter unit 1 . The clean water outlet 12 is located at the end of the clean water channel 131 . The filter unit 1 may specifically adopt a reverse osmosis filter element 14 .

[0088] The housing 2 specifically includes a connection seat 21 and a piston cylinder 22 integrally connected to the connection seat 21, the piston 3 is arranged in the piston cylinder 22, the upper and lower ends of the cylinder 15 are open, the lower end of the cylinder 15 is threadedly connected to the base 13, and the connection seat 21 is threadedly connected to the upper end of the cylinder 15. Specifically, for the embodiment in which the power device includes two pistons 3, the housing 2 can be arranged with two piston cylinders 22 side by side, and the two pistons 3 are matched with the two piston cylinders 22 in a one-to-one correspondence to form two pressure chambers 4, and the lower end of the piston cylinder 22 is provided with a raw water outlet 42, which can be directly connected to the upper end of the cylinder 15. The upper end of the cylinder 15 forms the raw water inlet 11 of the filter unit 1. The connection seat 21 is threadedly connected to the upper end of the cylinder 15, which is convenient for disassembly and assembly, and the connection seat 21 can be removed to replace the reverse osmosis filter element 14 from the upper end of the cylinder 15.

[0089] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0090] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0091] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A double-cylinder continuous water purifier, comprising: A filter unit, the filter unit comprising a raw water inlet and a clean water outlet; It is characterized in that The double-cylinder continuous water purifier is also provided with: A power device, the power device comprising a housing and a plurality of pistons, the housing being provided with at least two pressure chambers, the pistons being movably and sealingly arranged in the pressure chambers to provide pressure and suction for the pressure chambers, each of the pressure chambers being respectively provided with a raw water inlet connected to the raw water inlet and a raw water outlet connected to the filter unit; The piston reciprocates in the shell to switch each of the pressure chambers between a water absorption state and a water pressure state, and when one pressure chamber is in a water pressure state, the other pressure chamber is in a water absorption state; when the rear pressure chamber changes from a water absorption state to a water pressure state, the front pressure chamber changes from a water pressure state to a water absorption state, so that the raw water inlet maintains continuous water inflow and the clean water outlet maintains continuous water outflow.

2. The double-cylinder continuous water purifier according to claim 1, characterized in that: The power device also includes: A power connecting rod, wherein the power connecting rod has a fixed shaft hinged to the housing, and the power connecting rod swings and rotates reciprocatingly on the fixed shaft; An articulated connecting rod, through which the plurality of pistons are respectively articulated to the power connecting rod; When two pressure chambers are provided in the housing, the articulated link comprises a first articulated link and a second articulated link, the first articulated link is articulated with the power link via a first articulated shaft, and the second articulated link is articulated with the power link via a second articulated shaft; The first hinge shaft and the second hinge shaft are respectively located on both sides of the fixed shaft with a set distance. The power connecting rod takes the fixed shaft as the rotation center, applies pressure to the first hinge shaft, and applies tension to the second hinge shaft. When the first piston connected to the first hinge shaft moves to the pressure limit position, the power connecting rod rotates in the opposite direction, applies tension to the first hinge shaft, and applies pressure to the second hinge shaft, until the second piston connected to the second hinge shaft moves to the pressure limit position.

3. The double-cylinder continuous water purifier according to claim 2, characterized in that: The other end of the first articulated connecting rod is articulated to the first piston, and the other end of the second articulated connecting rod is articulated to the second piston. Under the drive of the power connecting rod, the first piston moves linearly in the first pressure chamber, and the second piston moves linearly in the second pressure chamber; When the first pressure chamber is in a water-compressing state and the second pressure chamber is in a water-absorbing state, at a preset movement frequency, the water-compressing pressure of the first piston is P1, and the water-absorbing pressure of the second piston is P2, and P1:P2=(40~120):

1.

4. The double-cylinder continuous water purifier according to claim 2, characterized in that: The power device is also provided with an operating rod connected to the power connecting rod, the operating rod is connected to the single end of the power connecting rod, the operating rod has an operating part, the operating part is separated from the fixed axis to form a power arm, and the articulated connecting rod is separated from the fixed axis to form a piston arm.

5. The double-cylinder continuous water purifier according to claim 4, characterized in that: The operating rod is movably connected to the power connecting rod, and the operating rod has a working state and a storage state relative to the power connecting rod. In the working state, the operating rod is positioned and fixed at the end of the power connecting rod, and the length direction of the operating rod and the length direction of the power connecting rod extend in the same direction; in the storage state, the operating rod rotates relative to the power connecting rod and is folded and stored on one side of the shell.

6. The double-cylinder continuous water purifier according to claim 4, characterized in that: The double-cylinder continuous water purifier is a manual pressure water purifier, the manual pressure applied by the arm to the operating rod is F1, the total water pressure and water suction force of the multiple pistons is F2, and F1:F2=1:(5~20).

7. The double-cylinder continuous water purifier according to claim 1, characterized in that: The multiple pressure chambers are arranged longitudinally, and the multiple pistons reciprocate alternately in the vertical direction. The filter unit is located below the pressure chamber, and the raw water outlet is located at the bottom of the pressure chamber. The raw water outlet is provided with a water outlet control valve, and the water outlet control valve is configured to close the raw water outlet when the pressure chamber is in a water absorption state, and open the raw water outlet when the pressure chamber is in a water pressure state.

8. The double-cylinder continuous water purifier according to claim 7, characterized in that: When the piston moves to the pressure limit position in the pressure chamber, the pressure chamber has a surplus water storage chamber, the raw water inlet is arranged in the surplus water storage chamber, and the raw water inlet is provided with a water inlet control valve. The water inlet control valve is configured to open the raw water inlet when the pressure chamber is in a water absorption state, and close the raw water inlet when the pressure chamber is in a water pressure state; in a single pressure chamber, either the water inlet control valve or the water outlet control valve is selectively opened.

9. The double-cylinder continuous water purifier according to claim 8, characterized in that: When the piston moves to the suction limit position in the pressure chamber, the pressure chamber has a maximum chamber height H, the residual water storage chamber height is h, the diameter of the piston is d, H / d=1-2.75, and h / d=0.2-0.

8.

10. The double-cylinder continuous water purifier according to any one of claims 1 to 8, characterized in that: The double-cylinder continuous water purifier is also provided with a cylinder body and a base; The cylinder is connected to the bottom of the power device, the filter unit is located in the cylinder, a filter front end water cavity of the filter unit is formed between the cylinder and the filter unit, and the filter front end water cavity is connected to the raw water outlet; The base is fixed below the cylinder, and a clean water channel communicating with the rear-end water cavity of the filter unit is provided on the base, and the clean water outlet is located at the end of the clean water channel.

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