CN-117085405-B - Method for assembling pre-filter

CN117085405BCN 117085405 BCN117085405 BCN 117085405BCN-117085405-B

Abstract

The invention discloses an assembly method of a pre-filter, which comprises the steps of mounting the upper part of a filter element into a space surrounded by an upper shell II, buckling an upper shell I on the other side of the filter element, butting the upper shell I and the upper shell II to form an upper shell, exposing the lower part of the filter element from the bottom of the upper shell, mounting a circuit board on the inner side of a lower shell I, mounting a display box on the inner side of the lower shell I, surrounding the circuit board by the display box, mounting a motor on the inner side of the lower shell II, horizontally inserting the top of the lower shell I into a bottom slot of the upper shell I, horizontally inserting the top of the lower shell II into a bottom slot of the upper shell II, butting the lower shell I and the lower shell II to form a lower shell so as to wrap the lower part of the filter element, enabling the lower shell to rotate relative to the upper shell, and mounting a top shell component on the top of the upper shell. This scheme is convenient for the installation of inside filter core and electric device, improves packaging efficiency.

Inventors

JING YANTAO
TIAN HAIYAN
DU ZHIJIE
WANG DEJUN

Assignees

青岛经济技术开发区海尔热水器有限公司
海尔智家股份有限公司

Dates

Publication Date: 20260512
Application Date: 20230818

Claims (10)

1. A method of assembling a prefilter, comprising: the upper part of the filter element is arranged in a space surrounded by an upper shell II, an upper shell I is buckled on the other side of the filter element, the upper shell I is in butt joint with the upper shell II to form an upper shell, and the lower part of the filter element is exposed from the bottom of the upper shell; The circuit board is mounted on the inner side of the lower shell I, the display box surrounds the circuit board, and a limiting notch for limiting the drainage valve body is formed in the display box; Mounting a motor to the inner side of the lower shell II, wherein the motor is connected with the drainage valve body; The top of the lower shell I is horizontally inserted into a bottom slot of the upper shell I, the top of the lower shell II is horizontally inserted into a bottom slot of the upper shell II, the lower shell I is in butt joint with the lower shell II to form a lower shell so as to wrap the lower part of the filter element, the drain valve body is positioned in a space between the display box and the motor, and the lower shell can rotate relative to the upper shell; A top housing assembly is mounted on top of the upper housing.
2. The method of assembly of claim 1, wherein, The filter element comprises a filter element main body and a drain valve body arranged at the bottom of the filter element main body; When the lower shell I is inserted and installed on the upper shell I, the limiting notch is matched with the irregular outer contour of the drainage valve body to limit the drainage valve body; When the lower shell II is inserted and installed on the upper shell II, the motor is connected with the drainage valve body.
3. The method of assembly of claim 1, wherein, When the motor is installed on the lower shell II, the motor is placed on a third limiting rib on the inner wall of the lower shell II, the bottom of the motor is propped against the third limiting rib, the left side and the right side of the motor are propped against a second limiting rib on the inner wall of the lower shell II, positioning holes on the motor are inserted into positioning columns on the inner wall of the lower shell II, and the motor is fixed to mounting columns on the inner wall of the lower shell II through fasteners.
4. The method of assembly of claim 1, wherein, An upper circumferential extension rib is arranged on the inner wall of the upper shell II, two ends of the upper circumferential extension rib extend out of the left side edge and the right side edge of the upper shell II, and when the upper shell I is installed, the inner walls on the left side and the right side of the upper shell I are close to the upper shell II along the extending ends of the upper circumferential extension rib and are buckled with the upper shell II; The inner wall of the lower shell II is provided with lower circumferential extension ribs, two ends of each lower circumferential extension rib extend out of the left side edge and the right side edge of the lower shell II, and when the lower shell I is installed, the inner walls of the left side and the right side of the lower shell I are close to the lower shell II along the extending ends of the lower circumferential extension ribs and are in buckling connection with the lower shell II.
5. The method of assembly of claim 1, wherein, The inner wall of the lower shell I is provided with a first matching part I, and the inner wall of the lower shell II is provided with a first matching part II; The bottoms of the upper shell I and the upper shell II are respectively provided with a vertical extension part which extends downwards, and the vertical extension parts are provided with slots for inserting the lower shell I and the lower shell II; when the top of the lower shell I is horizontally inserted into the bottom slot of the upper shell I, the first matching part I is abutted against the vertical extension part on the corresponding side; When the top of the lower shell II is horizontally inserted into the bottom slot of the upper shell II, the first matching part II abuts against the vertical extension part on the corresponding side.
6. The method of assembly of claim 1, wherein, Before the upper shell I is buckled, a decoration and an observation window are installed at the installation opening of the upper shell I, the observation window is installed on the inner side of the decoration, the observation window is exposed from the middle opening area of the decoration, and then the decoration is installed at the installation opening of the upper shell I from outside to inside.
7. The method of assembly of claim 1, wherein, The top shell assembly comprises a decoration, a date turntable and an observation window, wherein the observation window is arranged at a middle installation opening of the date turntable; When the top shell component is installed, the decoration is buckled on the top of the upper shell, and then an assembly formed by the date turntable and the observation window is installed, wherein the assembly is buckled on the top of the upper shell and is positioned in the middle opening area of the date turntable.
8. The method of assembly of claim 1, wherein, The top shell assembly comprises a decoration, a date turntable and an observation window, wherein the observation window is arranged at a middle installation opening of the date turntable; When the top shell component is installed, an assembly part formed by the date turntable and the observation window is installed first, the assembly part is buckled to the top of the upper shell, then the decoration part is buckled to the top of the upper shell, and the assembly part is positioned in the middle opening area of the date turntable.
9. The method of assembling according to claim 7 or 8, wherein, The top of the upper shell is provided with a mounting groove, the bottom of the mounting groove is provided with a clamping port, and the mounting groove extends along the circumferential direction of the upper shell; The decoration is equipped with joint portion, first spacing portion and second spacing portion on the orientation one side of mounting groove, installs during the decoration, first spacing portion is followed the outer lane perisporium of mounting groove inserts in the mounting groove, to the second spacing portion with insert the position of stopping when the tank bottom of mounting groove supports, joint portion with joint mouth joint, the decoration will the top of mounting groove is uncovered to cover.
10. The method of assembling according to claim 7 or 8, wherein, The date rotary table is provided with a first extending rib, the first extending rib extends along the circumferential direction of the date rotary table, the first extending rib is provided with a downward extending lengthened rib, the lengthened rib is provided with an elastic arm, the elastic arm extends upwards from the lengthened rib, and the first extending rib and the lengthened rib are provided with notches for giving way to the elastic arm; when the date turntable is installed in the top installation opening of the upper shell, the lengthened ribs are elastically deformed to guide the first extension ribs to be inserted into the installation opening downwards, and the protruding structures on the elastic arms are matched with the recessed structures on the inner peripheral wall of the installation opening.

Description

Method for assembling pre-filter Technical Field The invention relates to the technical field of filters, in particular to an assembly method of a pre-filter. Background The pre-filter is a first coarse filtering device for the whole house water, can filter sediment, rust, algae and other large-particle impurities in tap water, and is generally arranged behind the water surface in a water inlet pipeline. The filter core is arranged in the front filter and is arranged in the space surrounded by the shell. The filter element comprises a core body, an outer shell body, a water inlet, a water outlet, a drainage valve body and other parts, wherein the outer shell body is a transparent part, a framework part is arranged in a gap between the outer shell body and the core body, scraping blades are arranged on the framework part, the shell body is of a general upper half-type structure and a lower half-type structure, the lower shell body is connected with the drainage valve body at the bottom, the lower shell body rotates to drive the drainage valve body and the inner framework part to rotate, so that the scraping blades scrape the inner wall of the transparent outer shell body of the filter element, and a scraping function is realized. In the automatic prefilter, the drain valve body is driven by a motor to automatically drain water. In the automatic structure, the lower shell is of a hollow cylindrical structure with an integral structure, so that the limit installation of the internal drainage valve body and the installation of electric devices such as a motor and a circuit board are inconvenient. The above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may not form the prior art that is already known to those of ordinary skill in the art. Disclosure of Invention Aiming at the problems pointed out in the background technology, the invention provides an assembly method of a pre-filter, which is convenient for the installation of an internal filter element and an electric device and improves the assembly efficiency. In order to achieve the aim of the invention, the invention is realized by adopting the following technical scheme: the invention provides an assembly method of a pre-filter, which comprises the following steps: the upper part of the filter element is arranged in a space surrounded by an upper shell II, an upper shell I is buckled on the other side of the filter element, the upper shell I is in butt joint with the upper shell II to form an upper shell, and the lower part of the filter element is exposed from the bottom of the upper shell; Mounting a circuit board on the inner side of a lower shell I, and mounting a display box on the inner side of the lower shell I, wherein the display box surrounds the circuit board; mounting the motor to the inner side of the lower case II; The top of the lower shell I is horizontally inserted into a bottom slot of the upper shell I, the top of the lower shell II is horizontally inserted into a bottom slot of the upper shell II, the lower shell I is in butt joint with the lower shell II to form a lower shell so as to wrap the lower part of the filter element, and the lower shell can rotate relative to the upper shell; A top housing assembly is mounted on top of the upper housing. In the assembling method of the pre-filter, the filter element is used as an integral part, when the pre-filter is assembled, the upper shell I and the lower shell II are respectively buckled on the front side and the rear side of the upper part of the filter element, then the lower shell I and the lower shell II are buckled, and after the four half shells are respectively buckled on the filter element in a buckling manner, the filter element can be assembled, a complex structure for limiting or positioning the filter element is not needed to be processed on the shell, and the filter element is convenient to assemble and process. The front-back half structure of the lower shell is characterized in that a circuit board and a display box are arranged in the lower shell I, a driving part is arranged in the lower shell I, a drainage valve body is located in a space between the display box and the driving part, one side of the drainage valve body is connected with the driving part so that the driving part drives the drainage valve body, and the other side of the drainage valve body is matched with a limiting part on the display box so as to rotate along with the lower shell. The overall structure layout is compact. Other features and advantages of the present invention will become apparent upon review of the detailed description of the invention in conjunction with the drawings. Drawings In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art wil