A hidden pre-filter automatic discharge device

Abstract

The present invention discloses a concealed pre-filter automatic discharge device, which relates to the field of filtration and water purification, comprising a sealing cylinder for placing a filter element, a pre-filter chamber formed between the upper portion of the filter element and the inner wall of the sealing cylinder, a top cover installed on the top of the sealing cylinder to seal the pre-filter chamber; a discharge port opened on the outer wall of the water inlet pipe; a three-pronged inner tube and a three-pronged outer tube, one end of the three-pronged outer tube passing through the sealing cylinder and connected to the water inlet pipe, the other two ends of the three-pronged outer tube both being equipped with a pre-filter screen and extending into the pre-filter chamber; a drainage suction pipe correspondingly arranged in each pre-filter screen, the two drainage suction pipes correspondingly connected to the two ports of the three-pronged inner tube, the third port of the three-pronged inner tube being connected to the discharge port through a drainage channel; and a purified water outlet pipe connected to the water outlet. The present invention sets a pre-filter chamber above the filter element, which can be placed in a concealed manner, effectively filtering sand, gravel, rust, etc., extending the service life of the filter element, and not occupying external space.

Description

Technical Field

[0001] The invention relates to the field of filtered water purification, and in particular to a hidden pre-filter automatic discharge device. Background Art

[0002] Before tap water passes through the water supply network and reaches the water terminal, it passes through many pipes. There are a lot of impurities such as mud, rust, and floating matter in the pipes. If they are not filtered, it will cause secondary pollution of the water.

[0003] As the first filter at the water terminal, the pre-filter can remove large particles such as sediment, rust, insect eggs, and bloodworms from tap water. Therefore, most water systems now use pre-filters to filter water at the source before it enters the water terminal. This not only effectively eliminates secondary pollution and reduces water pollution diseases, but also removes solid impurities, protects the water system safety, and reduces system maintenance costs.

[0004] However, the products currently sold on the market, such as household pre-filtration filters and household whole-house pre-filtration filters, are mostly external filtration devices. They require additional space when installed and affect the overall aesthetics. The filtration effect can only remove coarse sand and gravel and other rust particles in the water. It has no secondary filtration function and cannot effectively remove microorganisms, residual chlorine and other bacteria, heavy metals, etc. in the water.

[0005] These pre-filters only provide simple filtering functions, and the waste (filter residue) generated by filtration is often manually discharged at a scheduled time. This is prone to forgetfulness, and the residue remaining in the filter for an extended period of time can shorten the filter's service life and deteriorate the filtered water quality. With the improvement of household living conditions, the demand for water quality is also increasing. Furthermore, the compact living space of urban commercial housing does not allow for the installation of multiple filtration devices with different functions. Therefore, it is necessary to propose improvements to existing pre-filters. Summary of the Invention

[0006] The purpose of the present invention is to overcome the shortcomings of the existing technology and provide a hidden pre-filter automatic discharge device with multi-stage filtering effect (function), no need for power supply, large flow rate to meet the water needs of the whole house, simple installation, and does not take up a large space, and does not require regular manual operation to discharge wastewater and coarse filter residue; it effectively increases the service life of the filter and provides high-quality water quality; it solves the problem that various components of the existing water purifier are exposed, occupy a large space and are not beautiful, and adopts a hidden, closed design, and the inlet and outlet water are in the same pipeline of the filtering device.

[0007] The purpose of the present invention is to achieve the following technical solution: This hidden pre-filter automatic discharge device includes

[0008] The sealing cylinder is used to place the filter element. A pre-filter cavity is formed between the upper portion of the filter element and the inner wall of the sealing cylinder, which is used to place the three-pronged bracket. A top cover is installed on the top of the sealing cylinder to seal the pre-filter cavity.

[0009] The water inlet pipe is connected to the outer wall of the sealing cylinder, and a discharge port is provided on the outer wall of the water inlet pipe;

[0010] A three-pronged bracket includes a three-pronged inner tube and a three-pronged outer tube sleeved outside the three-pronged inner tube. One end of the three-pronged outer tube passes through a sealed cylinder and is connected to the water inlet pipe. The other two ends of the three-pronged outer tube are each equipped with a pre-filter and extend into the pre-filter cavity, for outputting pre-filtered water for further filtration by the filter element. Each pre-filter is correspondingly provided with a drainage straw, and the two drainage straws are correspondingly connected to two ports of the three-pronged inner tube. The third port of the three-pronged inner tube is connected to the discharge port through a drainage channel, thereby discharging pre-filtered waste water. The drainage channel is provided in the water inlet pipe and is not connected to the inner cavity of the water inlet pipe.

[0011] The purified water outlet pipe is connected to the outer wall of the sealing cylinder. The purified water outlet pipe is communicated with the water outlet opened in the center of the filter element through the water outlet channel for outputting purified water to the outside.

[0012] As a further technical solution, a water inlet channel is formed between the inner wall of the water inlet pipe and the outer wall of the drainage channel, and the water inlet channel is connected to the three-pronged outer pipe.

[0013] As a further technical solution, an umbrella-shaped head is provided at the front end of the pre-filter to facilitate accommodating the filter residue formed by the pre-filtration.

[0014] As a further technical solution, a trumpet-shaped opening is provided at one end of the drainage suction pipe close to the umbrella-shaped head for guiding the filter residue.

[0015] As a further technical solution, the discharge port is externally connected to an automatic discharge valve for automatically and regularly opening the discharge port.

[0016] As a further technical solution, the filter element adopts a single filter element or a composite filter element.

[0017] The beneficial effects of the present invention are:

[0018] 1. A pre-filter chamber is set above the filter element, which can be hidden to effectively filter sand, gravel, rust, etc., extend the service life of the filter element, and does not occupy external space, which is more beautiful;

[0019] 2. The pre-filter and filter element are integrated into the sealed cylinder, which is lower in cost than a separate external filter device and does not affect the original function of the filter;

[0020] 3. The water inlet pipe also functions as a wastewater discharge pipe, and is divided into two routes: water inlet and drainage. External water is introduced along the water inlet channel on the inner wall of the water inlet pipe, while wastewater is discharged from the drainage channel and the discharge port. This feature provides better sealing safety, high integration, and smaller footprint.

[0021] 4. The discharge port is connected to an automatic discharge valve, which can set the time interval for automatic discharge according to the amount of water used. It is easy to operate and the use environment is not restricted by power supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0023] Figure 2 for Figure 1 Schematic diagram of the top view structure.

[0024] Figure 3 for Figure 2 GG cross-sectional view.

[0025] Figure 4 for Figure 3 FF cross-sectional view.

[0026] Figure 5 This is a schematic diagram of the three-dimensional structure of the present invention after the top cover is hidden.

[0027] Figure 6 Schematic diagram of the inlet and outlet water flow of the present invention.

[0028] Explanation of the accompanying drawings: water inlet pipe 1, water inlet channel 11, three-pronged bracket 2, three-pronged outer tube 21, three-pronged inner tube 22, pre-filter 3, umbrella-shaped head 31, drainage suction pipe 4, trumpet-shaped mouth 41, drainage channel 42, sealing cylinder 5, pre-filter chamber 51, filter element 6, water outlet 61, clean water outlet pipe 7, water outlet channel 71, top cover 8, discharge port 9. DETAILED DESCRIPTION

[0029] The present invention will be described in detail below with reference to the accompanying drawings:

[0030] Example: As shown in the attached Figures 1 to 6 As shown, this hidden pre-filter automatic discharge device includes a water inlet pipe 1, a water inlet channel 11, a three-pronged bracket 2, a three-pronged outer tube 21, a three-pronged inner tube 22, a pre-filter 3, an umbrella-shaped head 31, a drainage straw 4, a trumpet-shaped mouth 41, a drainage channel 42, a sealing cylinder 5, a pre-filter chamber 51, a filter element 6, a water outlet 61, a clean water outlet pipe 7, a water outlet channel 71, a top cover 8 and a discharge port 9.

[0031] Reference Attachment Figure 3It should be noted that the filter element 6 is installed in the sealing cylinder 5 (not below the water outlet 61). Since the filter element 6 adopts a replaceable structure, it is preferably a single filter element or a composite filter element, which can be selected according to customer needs. Figure 3 The structure of the filter element 6 is hidden in FIG. Figure 4 、 5 As shown, a filter element 6 is placed in the sealing cylinder 5, and a pre-filter chamber 51 is formed between the upper portion of the filter element 6 and the inner wall of the sealing cylinder 5 (which can perform preliminary filtration on the water entering the filter element 6). A tripod bracket 2 is placed in the pre-filter chamber 51. To ensure the sealing of the pre-filter chamber 51, a top cover 8 is installed on the top of the sealing cylinder 5. Figure 1 、 2 shown.

[0032] Further, such as Figure 3 As shown, the water inlet pipe 1 is detachably connected to the (right side) outer wall of the sealing cylinder 5 , and a discharge port 9 is opened on the outer wall of the water inlet pipe 1 .

[0033] Reference Attachment Figure 4 The three-pronged bracket 2 includes a three-pronged inner tube 22 and a three-pronged outer tube 21 sleeved on the outside of the three-pronged inner tube 22 (forming an inner and outer two-layer three-pronged structure), wherein one end (the right end) of the three-pronged outer tube 21 passes through the sealing cylinder 5 and is connected to the water inlet pipe 1, and the two ends of the left side of the three-pronged outer tube 21 are each equipped with a pre-filter 3, and the two pre-filters 3 are both extended into the pre-filter cavity 51. The water flowing in from the water inlet pipe 1 is preliminarily filtered by the pre-filter 3 to generate pre-filtered water, which is discharged into the pre-filter cavity 51 and further filtered by the filter element 6. Furthermore, a drainage pipe 4 is provided within each pre-filter 3. Two drainage pipes 4 are connected to the two ports on the left side of the three-pronged inner tube 22. The third port on the right side of the three-pronged inner tube 22 is connected to the discharge port 9 via a drainage channel 42, thereby discharging the pre-filtered wastewater (including the filter residue produced by the initial filtration). The drainage channel 42 is provided within the water inlet pipe 1 and is not connected to the inner cavity of the water inlet pipe 1. The clean water outlet pipe 7 is connected to the outer wall on the left side of the sealing cylinder 5. The clean water outlet pipe 7 is connected to the water outlet 61 provided in the center of the filter element 6 via the water outlet channel 71, thereby outputting the clean water.

[0034] Furthermore, an inlet channel 11 (surrounding the inner wall of the inlet pipe 1 ) is formed between the inner wall of the inlet pipe 1 and the outer wall of the drainage channel 42 , and the inlet channel 11 is connected to the three-pronged outer pipe 21 , and the three-pronged inner pipe 22 is connected to the drainage channel 42 .

[0035] Preferably, an umbrella-shaped head 31 is provided at the front end of the pre-filter 3, and the umbrella-shaped head 31 is convenient for accommodating the filter residue formed by the pre-filtration. A trumpet-shaped mouth 41 is provided at one end of the drainage pipette 4 close to the umbrella-shaped head 31, so as to facilitate the diversion of the filter residue and promote the emptying of the filter residue. Preferably, the discharge port 9 is externally connected to an automatic discharge valve, and the time interval for each automatic timed discharge can be set according to the amount of water used by the user, thereby automatically and regularly opening the discharge port 9. The automatic discharge valve has a self-powered power supply and does not require an external power supply. It is convenient for use at any position when water is flowing, and the waste water is discharged directly into the downpipe under the cabinet.

[0036] The working process of the present invention is as follows: Figure 6 As shown, external water supply enters the device from the water inlet pipe 1, flows along the annular water inlet channel 11 between the inner wall of the water inlet pipe 1 and the outer wall of the drainage channel 42, and then enters the three-pronged outer pipe 21. It is initially filtered by the pre-filter 3 at the front end of the three-pronged outer pipe 21 to generate pre-filtered water, which is discharged into the pre-filter chamber 51. Under the pressure of the external water supply, the pre-filtered water penetrates into the filter element 6, and is further filtered by the filter element 6 to produce clean water. The clean water flows out from the water outlet 61 at the top of the filter element 6, and is output from the clean water outlet pipe 7 to the user side through the water outlet channel 71. During normal use, the automatic discharge valve is in a closed state, the discharge port 9 is closed, and no wastewater is discharged; when the external automatic discharge valve is opened, under the action of the water supply pressure, the filter residue (coarse garbage, mud and other impurities) deposited between the pre-filter 3 and the drainage suction pipe 4 is flushed into the trumpet-shaped mouth 41, and enters the three-pronged inner tube 22 along the drainage suction pipe 4, and finally discharged outward from the discharge port 9 along the drainage channel 42, realizing automatic sewage discharge.

[0037] It is understandable that for those skilled in the art, any equivalent replacement or change to the technical solution and inventive concept of the present invention should fall within the scope of protection of the claims attached to the present invention.

Claims

1. A hidden pre-filter automatic discharge device, characterized by: include The sealing cylinder (5) is used to place the filter element (6), and a pre-filter cavity (51) is formed between the upper portion of the filter element (6) and the inner wall of the sealing cylinder (5), and is used to place the three-pronged bracket (2). A top cover (8) is installed on the top of the sealing cylinder (5) to seal the pre-filter cavity (51); A water inlet pipe (1) is connected to the outer wall of the sealing cylinder (5), and a discharge port (9) is provided on the outer wall of the water inlet pipe (1); The three-pronged bracket (2) comprises a three-pronged inner tube (22) and a three-pronged outer tube (21) sleeved outside the three-pronged inner tube (22). One end of the three-pronged outer tube (21) passes through the sealing cylinder (5) and is connected to the water inlet pipe (1). The other two ends of the three-pronged outer tube (21) are both equipped with a pre-filter (3) and extend into the pre-filter cavity (51) for outputting pre-filtered water for further filtration by the filter element (6). A drainage pipe (4) is correspondingly arranged in each pre-filter (3). The two drainage pipes (4) are correspondingly connected to two ports of the three-pronged inner tube (22). The third port of the three-pronged inner tube (22) is connected to the discharge port (9) through a drainage channel (42), thereby discharging pre-filtered waste water. The drainage channel (42) is arranged in the water inlet pipe (1) and is not communicated with the inner cavity of the water inlet pipe (1). as well as The purified water outlet pipe (7) is connected to the outer wall of the sealing cylinder (5). The purified water outlet pipe (7) is communicated with the water outlet (61) provided in the center of the filter element (6) through the water outlet channel (71) for outputting purified water to the outside.

2. The hidden pre-filter automatic drain device according to claim 1, characterized in that: A water inlet channel (11) is formed between the inner wall of the water inlet pipe (1) and the outer wall of the drainage channel (42), and the water inlet channel (11) is communicated with the three-pronged outer pipe (21).

3. The hidden pre-filter automatic drain device according to claim 1, characterized in that: An umbrella-shaped head (31) is provided at the front end of the pre-filtering screen (3) to facilitate accommodating filter residue formed by pre-filtration.

4. The hidden pre-filter automatic drain device according to claim 3, characterized in that: A trumpet-shaped opening (41) is provided at one end of the drainage suction pipe (4) close to the umbrella-shaped head (31) for guiding the filter residue.

5. The hidden pre-filter automatic drain device according to claim 1, characterized in that: The discharge port (9) is externally connected to an automatic discharge valve for automatically and regularly opening the discharge port (9).

6. The hidden pre-filter automatic drain device according to any one of claims 1 to 5, characterized in that: The filter element (6) adopts a single filter element or a composite filter element.

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