Backflow-preventing table type water purifier

Abstract

The utility model provides an anti-backflow table type water purifier which comprises a machine shell body, a water tank body is arranged on the machine shell body, a raw water opening is formed in the water tank body, and a reverse osmosis filtering device, a supercharging device, a pure water control valve and a one-way valve are arranged in the machine shell body. A pure water outlet is formed in the machine shell, and pure water flow channels are formed among the raw water port, the supercharging device, the water inlet side of the reverse osmosis filtering device, the pure water side, the one-way valve, the pure water control valve and the pure water outlet. Through the structure of the table type water purifier and the arrangement of the water path, under the application that the one-way valve is arranged between the pure water control valve and the pure water side of the reverse osmosis filtering device, pure water guided out from the pure water side of the reverse osmosis filtering device is guided by the one-way valve to pass through the pure water control valve in a one-way mode and face the position of the pure water outlet, so that the pressure is balanced; and the phenomenon that pure water on the rear side of the pure water control valve flows back to the raw water tank along the opposite direction of the pure water flow channel because the functions of the supercharging device and the pure water control valve are stopped after shutdown is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of water purifier structures, in particular to a backflow-proof desktop water purifier. Background Art

[0002] Water purifiers are currently used to effectively filter water, providing daily drinking water needs. However, to ensure stable pure water output, current desktop water purifiers often require extensive internal control mechanisms, resulting in larger overall equipment and a size that cannot meet the requirements of compact installation spaces.

[0003] In the prior art, a desktop water purifier equipped with a raw water tank and using the reverse osmosis filtration principle, when the water purifier stops working, the pure water and concentrated water in the reverse osmosis filtration device generate forward osmosis pressure, resulting in the pure water at the water outlet of the water purifier having the possibility of flowing back from the reverse osmosis filtration device to the raw water tank. Utility Model Content

[0004] The purpose of the utility model is to provide a desktop water purifier with raw water tank application, which has the functional characteristics of anti-backflow and has a compact structure to meet the setting requirements of compact installation space.

[0005] An anti-backflow desktop water purifier includes a machine housing, a water tank body is arranged on the machine housing, a raw water inlet is arranged on the water tank body, a reverse osmosis filtration device, a boosting device, a pure water control valve and a one-way valve are arranged in the machine housing; a pure water outlet is arranged on the machine housing, and the raw water inlet, the boosting device, the water inlet side of the reverse osmosis filtration device to the pure water side, the one-way valve, the pure water control valve to the pure water outlet are connected to form a pure water flow channel.

[0006] Furthermore, it also includes a pre-filter device and a post-filter device. The raw water inlet, the boosting device, the pre-filter device, the water inlet side of the reverse osmosis filter device to the pure water side, the post-filter device, the one-way valve, the pure water control valve to the pure water outlet are connected to form a pure water flow channel.

[0007] Furthermore, a concentrated water control valve is provided in the housing, a concentrated water outlet is provided in the water tank, and the concentrated water side of the reverse osmosis filtration device, the concentrated water control valve and the concentrated water outlet are connected to form a concentrated water flow channel.

[0008] Furthermore, the housing includes an L-shaped central bracket, the water tank body is supported on the upper side of the extended rear section of the central bracket, and the raw water inlet is arranged on the lower side of the water tank body and can be connected to the central bracket; the reverse osmosis filtration device is arranged on the upper side of the middle part of the central bracket, the boosting device is arranged on the lower side of the middle part of the central bracket, and the one-way valve and pure water control valve are arranged on the front part of the central bracket.

[0009] Furthermore, the pre-filter device, reverse osmosis filter device and post-filter device are arranged in an L-shaped three-point arrangement on the central bracket, the reverse osmosis filter device and pre-filter device are located in the middle of the central bracket, the post-filter device is located on one side of the front of the central bracket, and the one-way valve and pure water control valve are arranged on the other side of the front of the central bracket.

[0010] Furthermore, the concentrated water outlet is arranged on the lower side of the water tank body and can be connected to the central bracket, the concentrated water control valve is located on the lower side of the front of the central bracket, the one-way valve is located in the middle side of the front of the central bracket, and the pure water control valve is arranged on the upper side of the front of the central bracket; the machine housing also includes a front end shell located on the front side of the central bracket, and the water outlet is arranged on the front end shell.

[0011] Furthermore, the front end shell includes a water outlet platform extending forward from the upper part and a supporting platform extending forward from the lower part. There is an insertion space for placing a water container between the water outlet platform and the supporting platform, and the water outlet is located in the insertion space toward the lower side of the water outlet platform.

[0012] Furthermore, the central bracket is provided with a bracket opening toward the rear side for inserting the reverse osmosis filtration device, and a waterway plate assembly is provided on the upper front side of the central bracket. The reverse osmosis filtration device is inserted through the bracket opening and laterally connected to the waterway plate assembly to form a waterway connection; the central bracket and the outer periphery of the bracket opening and / or the upper side of the extended rear section of the central bracket are provided with an assembly structure that cooperates with the water tank body in positioning and assembly.

[0013] The beneficial effects of the present invention are:

[0014] Through the structure and water path setting of the desktop water purifier, with the application of a one-way valve set between the pure water control valve and the pure water side of the reverse osmosis filtration device, the pure water discharged from the pure water side of the reverse osmosis filtration device is guided by the one-way valve and flows in one direction through the pure water control valve toward the pure water outlet position, so that the pressure is balanced, and the functions of the boosting device and the pure water control valve are prevented from stopping after shutdown, causing the pure water on the rear side of the pure water control valve to flow back to the original water tank position along the opposite direction of the pure water flow channel.

[0015] Based on the structural arrangement and layout of the above-mentioned desktop water purifier, the desktop water purifier has the characteristics of being compact and having a small volume. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the exploded structure of the desktop water purifier of the present utility model;

[0017] Figure 2 This is a schematic diagram of the water path arrangement of the desktop water purifier of the present invention.

[0018] Description of reference numerals:

[0019] Machine body 1, central bracket 11, bracket opening 111, front end shell 12, water outlet platform 121, supporting platform 122, insertion space 123, water tank body 2, raw water inlet 21, concentrated water inlet 22, pre-filter device 31, reverse osmosis filter device 32, post-filter device 33, booster device 4, pure water control valve 51, concentrated water control valve 52, one-way valve 6, pure water outlet 7, waterway plate assembly 8, mounting structure 9. DETAILED DESCRIPTION

[0020] In order to make the technical solution, purpose and advantages of the present invention more clearly understood, the present invention is further explained below with reference to the accompanying drawings and embodiments.

[0021] like Figures 1 to 2 As shown, a desktop water purifier of the present invention includes a machine housing 1, a water tank body 2 is arranged on the machine housing 1, a raw water inlet 21 is arranged on the water tank body 2, a reverse osmosis filtration device 32, a boosting device 4, a pure water control valve 51 and a one-way valve 6 are arranged in the machine housing 1; a pure water outlet 7 is arranged on the machine housing 1, and the raw water inlet 21, the boosting device 4, the water inlet side of the reverse osmosis filtration device 32 to the pure water side, the one-way valve 6, the pure water control valve 51 to the pure water outlet 7 are connected to form a pure water flow channel.

[0022] Based on the application of a one-way valve 6 that guides the water source in one direction toward the pure water control valve 51 side, which is set between the pure water control valve 51 and the pure water side of the reverse osmosis filtration device 32, it can be avoided that after shutdown, the pure water between the pure water control valve 51 and the pure water outlet 7 can be prevented from flowing back to the original water tank position along the pure water flow channel after the boosting device 4 and the pure water control valve 51 stop operating.

[0023] Specifically, when the reverse osmosis filtration device 32 is used, it has a concentrated water side that produces concentrated water; in the desktop water purifier of the present invention, the water tank body 2 is provided with a concentrated water outlet 22, and the machine body 1 is also provided with a concentrated water control valve 52. The concentrated water side of the reverse osmosis filtration device 32, the concentrated water control valve 52 and the concentrated water outlet 22 are connected to form a concentrated water flow channel; the need for the concentrated water to flow back into the water tank body 2 and be mixed with the raw water in the water tank body 2 for re-application is met.

[0024] In order to meet the filtering effect of the desktop water purifier, the desktop water purifier of the present invention also includes a pre-filter device 31 and a post-filter device 33; the raw water inlet 21, the boosting device 4, the pre-filter device 31, the water inlet side of the reverse osmosis filter device 32 to the pure water side, the post-filter device 33, the one-way valve 6, the pure water control valve 51 to the pure water outlet 7 are connected to form a pure water flow channel, and the raw water is filtered through the three-stage filter element, which has a better filtering effect.

[0025] In order to meet the compact design application of the desktop water purifier, the preferred structure of the desktop water purifier of the present invention is as follows:

[0026] The housing 1 includes an L-shaped central bracket 11 and a front end shell 12 located in front of the central bracket 11. The water tank body 2 is supported on the upper side of the extended rear section of the central bracket 11. The raw water inlet 21 is arranged on the lower side of the water tank body 2 and can be connected to the central bracket 11. The concentrated water inlet 22 is arranged on the lower side of the water tank body 2 and can be connected to the central bracket 11; the water outlet is arranged on the front end shell 12.

[0027] Specifically, the reverse osmosis filtration device 32 is arranged on the upper middle side of the central bracket 11, and the pre-filter device 31, the reverse osmosis filtration device 32 and the post-filter device 33 are arranged in an L-shaped three-point arrangement on the central bracket 11. The reverse osmosis filtration device 32 and the pre-filter device 31 are located in the middle of the central bracket 11, and the post-filter device 33 is located on the front side of the central bracket 11; the pre-filter device 31, the reverse osmosis filtration device 32 and the post-filter device 33 are all in the shape of vertically arranged cylindrical bottles and are used independently.

[0028] The booster device 4 is located on the lower middle portion of the center support 11, below the reverse osmosis filter device 32 and the pre-filter device 31. The one-way valve 6 and pure water control valve 51 are located on the front of the center support 11. The one-way valve 6 and pure water control valve 51 are located on the other side of the front of the center support 11, corresponding to the side of the post-filter device 33. The concentrated water control valve 52 is located on the lower front portion of the center support 11, the one-way valve 6 is located in the middle of the front portion of the center support 11, and the pure water control valve 51 is located on the upper front portion of the center support 11.

[0029] The front end shell 12 includes a water outlet platform 121 extending forward from the upper part and a supporting platform 122 extending forward from the lower part. There is an insertion space 123 for inserting a water container between the water outlet platform 121 and the supporting platform 122. The water outlet is located on the water outlet platform 121 and is arranged in the insertion space 123 toward the lower side.

[0030] The central bracket 11 is provided with a bracket opening 111 toward the rear side for inserting the reverse osmosis filter device 32, and a waterway plate assembly 8 is provided on the upper front side of the central bracket 11. The reverse osmosis filter device 32 is inserted through the bracket opening 111 and is laterally connected to the waterway plate assembly 8. The reverse osmosis filter device 32 is water-connected with the pre-filter device 31 and the post-filter device 32 through the waterway plate assembly 8; the central bracket 11 and the outer periphery of the bracket opening 111 and / or the upper side of the extended rear section of the central bracket 11 are provided with an attachment structure 9 for positioning and assembling with the water tank body 2, the attachment structure 9 includes a buckling position located on the outer periphery of the bracket opening 111, and a snap-fit ​​position is provided on the front side of the water tank body 2, and the snap-fit ​​position is connected with the buckling position; the attachment structure includes a positioning groove provided on the upper side of the extended rear section of the central bracket 11, and the water tank body 2 is positioned and assembled in the positioning groove.

[0031] The above is only a preferred embodiment of the present invention. Those skilled in the art can modify the embodiment without departing from the implementation principle of the present invention, and the corresponding modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. Anti-backflow desktop water purifier, characterized by: It includes a machine casing, a water tank body is arranged on the machine casing, a raw water inlet is arranged on the water tank body, a reverse osmosis filtration device, a boosting device, a pure water control valve and a one-way valve are arranged in the machine casing; a pure water outlet is arranged on the machine casing, and the raw water inlet, the boosting device, the water inlet side of the reverse osmosis filtration device to the pure water side, the one-way valve, the pure water control valve to the pure water outlet are connected to form a pure water flow channel.

2. The desktop water purifier according to claim 1, characterized in that: It also includes a pre-filter device and a post-filter device. The raw water inlet, the boosting device, the pre-filter device, the water inlet side of the reverse osmosis filter device to the pure water side, the post-filter device, the one-way valve, the pure water control valve to the pure water outlet are connected to form a pure water flow channel.

3. The desktop water purifier according to claim 2, characterized in that: A concentrated water control valve is further provided in the housing, a concentrated water outlet is provided in the water tank, and the concentrated water side of the reverse osmosis filter device, the concentrated water control valve and the concentrated water outlet are connected to form a concentrated water flow channel.

4. The desktop water purifier according to claim 3, characterized in that: The housing includes an L-shaped central bracket, the water tank body is supported on the upper side of the extended rear section of the central bracket, the raw water inlet is arranged on the lower side of the water tank body and can be connected to the central bracket; the reverse osmosis filtration device is arranged on the upper side of the middle part of the central bracket, the boosting device is arranged on the lower side of the middle part of the central bracket, and the one-way valve and pure water control valve are arranged on the front part of the central bracket.

5. The desktop water purifier according to claim 4, characterized in that: The pre-filter device, reverse osmosis filter device and post-filter device are arranged in an L-shaped three-point arrangement on the central bracket. The reverse osmosis filter device and pre-filter device are located in the middle of the central bracket, the post-filter device is located on one side of the front of the central bracket, and the one-way valve and pure water control valve are arranged on the other side of the front of the central bracket.

6. The desktop water purifier according to claim 4, characterized in that: The concentrated water outlet is arranged on the lower side of the water tank body and can be connected to the central bracket. The concentrated water control valve is located on the lower side of the front of the central bracket. The one-way valve is located in the middle side of the front of the central bracket. The pure water control valve is arranged on the upper side of the front of the central bracket. The machine housing also includes a front end shell located on the front side of the central bracket, and the water outlet is arranged on the front end shell.

7. The desktop water purifier according to claim 6, characterized in that: The front end shell includes a water outlet platform extending forward from the upper part and a supporting platform extending forward from the lower part. There is an insertion space for placing a water container between the water outlet platform and the supporting platform. The water outlet is located in the insertion space toward the lower side of the water outlet platform.

8. The desktop water purifier according to claim 6, characterized in that: The central bracket is provided with a bracket opening toward the rear side for inserting the reverse osmosis filtration device, and a waterway plate assembly is provided on the upper front side of the central bracket. The reverse osmosis filtration device is inserted through the bracket opening and laterally connected to the waterway plate assembly to form a waterway connection; the central bracket and the outer periphery of the bracket opening and / or the upper side of the extended rear section of the central bracket are provided with an assembly structure that cooperates with the water tank body in positioning and assembly.

Images