Top sprayer with easy-to-change filter cartridge

Abstract

The present invention relates to a top spray, in particular to a top spray with filter cartridge easy to replace. The shell structure of the top spray is redesigned, on the basis of retaining the function of switching the water outlet mode by rotating the water outlet body, the convenience of replacing the filter cartridge is improved. The shell has a filter chamber for accommodating the filter cartridge and a filter cartridge mounting port, the filter chamber is located above the water outlet body, the filter cartridge is mounted into the filter chamber from the top spray outside through the filter cartridge mounting port, the top spray also includes a sealing cover for sealing the filter cartridge mounting port; the water inlet of the top spray is communicated with the filter chamber through a water supply channel, and the water outlet of the shell is directly communicated with the filter chamber; when the filter cartridge is mounted in the filter chamber, the water inlet end of the filter cartridge covers the connection between the filter chamber and the water supply channel, so that the water flowing into the filter chamber from the water supply channel first flows through the filter cartridge and then flows to the water outlet of the shell.

Description

TECHNICAL FIELD

[0001] The present application relates to a top spray, in particular to a top spray with filter cartridge easy to replace. BACKGROUND

[0002] The top sprays with filter cartridges on the market generally have the problem of inconvenient filter cartridge replacement, because the installation position of the top spray is relatively high, many users need to stand on a stool to reach it, and in order to replace the filter cartridge, the user needs to disassemble the top spray, replace the filter cartridge, and then reassemble the top spray, which is time-consuming and laborious.

[0003] In order to improve the convenience of replacing the filter cartridge, the patent document CN220195183U proposes a solution that the filter cartridge is designed to be quickly disassembled and assembled from the center of the water outlet body, but this also leads to the fact that the conventional water outlet body rotating structure cannot be applied to this kind of top spray, so this kind of top spray no longer has the function of switching the water outlet mode by rotating the water outlet body. SUMMARY

[0004] The technical problem to be solved by the present application is how to combine the water outlet body rotating structure and the filter cartridge quick disassembly structure, improve the convenience of replacing the filter cartridge, and realize the quick disassembly and assembly of the filter cartridge on the basis of retaining the function of switching the water outlet mode by rotating the water outlet body.

[0005] To solve this technical problem, the structure of the shell is redesigned, and the installation position of the filter cartridge is changed.

[0006] The present application provides a top spray with filter core easy to replace, which comprises a housing, a water outlet body and a filter core with a water inlet end and a water outlet end, the housing has a top spray water inlet above the water outlet body and at least one housing water outlet for supplying water to the water outlet body; the water outlet body supports at least two water outlet modes, different water outlet modes correspond to different water outlet channels arranged in the water outlet body and not communicated with each other; the water outlet body is rotationally connected with the housing, and the housing water outlet is communicated with the water outlet channel corresponding to different water outlet modes of the water outlet body by rotating the water outlet body relative to the housing, so as to realize the water outlet mode switching of the top spray; the housing also has a filter chamber for accommodating the filter core and a filter core mounting port, the filter chamber is transversely arranged above the water outlet body, the filter core is mounted into the filter chamber from outside the top spray through the filter core mounting port, and the top spray also comprises a sealing cover for sealing the filter core mounting port in a detachable manner; the top spray water inlet is communicated with the filter chamber through a water supply channel, and the housing water outlet is directly communicated with the filter chamber; when the filter core is mounted in the filter chamber, the water inlet end of the filter core covers the connection between the filter chamber and the water supply channel, the connection between the filter chamber and the water supply channel is defined as a first area, and the space of the filter chamber located outside the first area and the filter core is defined as a second area, the second area is communicated with the water path of the housing water outlet, and the water flowing into the water supply channel from the top spray water inlet flows into the filter core through the first area of the filter chamber, and then flows to the housing water outlet through the second area of the filter chamber

[0007] The water flows through the top spray water inlet, the water supply channel, the filter core, the space (second area) of the filter chamber not occupied by the filter core, the housing water outlet and the water outlet body in sequence, and the water flowing into the top spray from the top spray water inlet is filtered by the filter core before flowing out of the top spray from the water outlet body. The filter chamber is located above the water outlet body, the filter core mounting port is oriented to the side of the housing, and the filter core quick release structure and the water outlet body rotation structure do not interfere with each other.

[0008] Preferably, the filter core is in a straight cylinder type, one end of which is the water inlet end and the other end is the water outlet end, the water outlet end of the filter core is fixedly connected with the sealing cover in a detachable manner, and the sealing cover is fixedly connected with the housing in a detachable manner; when the sealing cover is removed, the filter core fixed on the sealing cover is taken out together with the sealing cover, thereby avoiding the problems that the filter core falls off or is inconvenient to take out after the sealing cover is opened. Non-preferably, the filter core can also have no fixed connection relationship with the sealing cover, for example, the sealing cover is hingedly connected with the housing, and is connected with the housing in a non-detachable manner while sealing the filter core mounting port in a detachable manner.

[0009] The filter core can be detachably fixed to the sealing cover in various ways. In one preferred embodiment, a plurality of L-shaped support strips are arranged on the inner side wall of the sealing cover, and the outer wall of the water outlet end of the filter core is clamped in each L-shaped support strip in an interference fit. The old filter core can be easily pulled out of the sealing cover and a new filter core can be inserted into the sealing cover by applying a little force. The operation is convenient, and the structure is simple and low in cost. Meanwhile, the L-shaped support strips enable the filter core and the sealing cover to form a water passage space, which can effectively increase the flow area between the water outlet end of the filter core and the sealing cover and promote the flow speed of the second area of the filter chamber. Of course, the present application does not exclude other detachable fixing ways of the filter core and the sealing cover. In one way, the filter core is fixed to the sealing cover by screws.

[0010] The sealing cover can be detachably fixed to the shell in various ways. For example, a water outlet end sealing ring is arranged on the sealing cover. When the sealing cover is arranged on the filter core mounting port, the water outlet end sealing ring abuts against the chamber wall of the filter chamber, so that water cannot flow out of the filter core mounting port and into the filter chamber. The sealing cover has a pinch hand and at least two circumferential clamping blocks. The chamber wall of the filter chamber is provided with clamping grooves corresponding to the circumferential clamping blocks. By pinching the pinch hand and rotating the sealing cover, the circumferential clamping blocks are clamped into the clamping grooves, thereby fixing the sealing cover relative to the shell. The sealing cover can be easily disassembled by rotating a small angle. In another example, the sealing cover is screwed to the filter core mounting port.

[0011] Preferably, the shell comprises a first sub-shell and a second sub-shell. The first sub-shell is a hollow shell having an upper opening, a lower opening and a side opening. The upper opening is a top-spraying water inlet port, the side opening is a filter core mounting port, and the water outlet body is arranged in the lower opening. The second sub-shell is fixed in the first sub-shell and is spliced with the first sub-shell to form a filter chamber. The second sub-shell comprises a bottom plate portion, a vertical plate portion and a vertical pipe portion. The vertical plate portion and the vertical pipe portion are arranged on the bottom plate portion, and the shell water outlet is arranged on the bottom plate portion. The shell water outlet and the vertical pipe portion are located on one side of the vertical plate portion, and the filter core is located on the other side of the vertical plate portion, so that water entering the filter core can fully contact the filter material in the filter core and then flow out of the filter core. The upper end of the vertical pipe portion is in communication with the top-spraying water inlet port, and a water inlet sealing ring is arranged on the upper end of the vertical pipe portion. The water inlet sealing ring abuts against the side wall of the top-spraying water inlet port. An inlet hole is arranged on the vertical plate portion and is in communication with the vertical pipe portion to form a water supply channel.

[0012] In order to ensure that the water flowing from the water supply channel to the filter chamber is filtered by the filter core before flowing into the shell water outlet, a sealing structure is designed between the water inlet end of the filter core and the chamber wall of the filter chamber. Further, a sealing ring mounting groove is arranged on the vertical plate portion around the inlet hole, and a gland sealing ring is clamped in the sealing ring mounting groove. When the filter core is mounted in the filter chamber, the water inlet end of the filter core abuts against the gland sealing ring, so that the filter chamber forms a first area between the water inlet end of the filter core and the vertical plate portion.

[0013] Preferably, the water outlet body comprises, from top to bottom, a water inlet disc, a distribution disc and a water outlet disc, the water inlet disc is provided with a first water inlet hole, a second water inlet hole and a third water inlet hole, the distribution disc is provided with a first distribution hole, a second distribution hole and a third distribution hole, the water outlet disc is annular, the water outlet disc is provided with a first water outlet hole and a second water outlet hole, the water outlet disc surrounds a water outlet sheet, the water outlet sheet is provided with a third water outlet hole; when the shell water outlet is communicated with the first water inlet hole, the water flows through the first distribution hole and flows out from the first water outlet hole as shower water; when the shell water outlet is communicated with the second water inlet hole, the water flows through the second distribution hole and flows out from the second water outlet hole as spray water; when the shell water outlet is communicated with the third water inlet hole, the water flows through the third distribution hole and flows out from the third water outlet hole as pressure-increased water. The user can switch the top spray among the shower water, the spray water and the pressure-increased water by rotating the water outlet body, and obtain three kinds of shower experience.

[0014] Preferably, the water outlet body further comprises a water outlet sealing ring and a fixing ring, the lower side of the distribution disc is provided with a water outlet sheet mounting groove, the water outlet sealing ring, the water outlet sheet and the fixing ring are sequentially arranged from top to bottom, the fixing ring is screwed with the water outlet sheet mounting groove to fix the water outlet sealing ring and the water outlet sheet in the water outlet sheet mounting groove. After the fixing ring is unscrewed, the water outlet sheet can be removed for cleaning. Non-preferably, the water outlet sheet is fixed on the water outlet disc in a non-detachable manner.

[0015] The top spray further comprises a screw, the water outlet body is mounted on the shell through the screw, the screw is located above the water outlet sheet, the water outlet disc has a shielding effect on the screw, and the appearance of the top spray is more beautiful.

[0016] The lower side of the shell is provided with a stepped shaft, the water outlet body is correspondingly provided with a bushing, and the stepped shaft is inserted into the bushing; the screw passes through a gasket and is fixed on the stepped shaft; the stepped shaft comprises an upper segment shaft body, a middle segment shaft body and a lower segment shaft body which are sequentially tapered from top to bottom, the outer periphery of the lower segment shaft body is a non-cylindrical surface (for example, a hexagonal prism surface or a pentagonal prism surface), the lower segment shaft body is inserted into the gasket, and the gasket cannot rotate relative to the stepped shaft; the outer peripheries of the gasket, the upper segment shaft body and the middle segment shaft body are cylindrical surfaces, the outer diameter of the gasket is greater than that of the middle segment shaft body, so that an annular positioning groove surrounding the middle segment shaft body is formed between the gasket and the upper segment shaft body, the inner wall of the bushing is provided with an annular convex edge matched with the annular positioning groove, and the annular convex edge is located in the annular positioning groove, so that the water outlet body cannot move up and down relative to the shell. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a perspective view of the top spray of an embodiment of the present application;

[0018] Figure 2 It is a perspective view of the top spray of an embodiment of the present application; Figure 1 It is a structural exploded view of the top spray shown in the figure;

[0019] Figure 3 It is a structural exploded view of the top spray shown in the figure; 4for Figure 2 The structural breakdown diagram of part A from different perspectives is shown below.

[0020] Figure 5 and 6 for Figure 2 The structural breakdown diagram of part B from different perspectives is shown below.

[0021] Figure 7 for Figure 2 The exploded view of part C is shown below;

[0022] Figure 8 for Figure 1 A cross-sectional view of the top spray shown;

[0023] Figure 9 for Figure 1 The diagram shows the installation of the top sprayer. Detailed Implementation

[0024] To facilitate the description of the relative positional relationships between different parts of the top sprayer provided by this invention, and the relative positional relationships between different parts of the same part, this application describes the top sprayer within a top sprayer coordinate system P. The "up" and "down" directions of this top sprayer coordinate system P are attached to this application. Figure 1 There are clear instructions in it.

[0025] To facilitate the description of the relative positional relationship between the installed overhead spray system and the user, this application also establishes a ground coordinate system Q. The four directions of this ground coordinate system Q—"up," "down," "front," and "back"—are detailed in the appendix of this application. Figure 9 There are clear instructions in it.

[0026] The following is in conjunction with the appendix Figures 1 to 8 Referring to the top spray coordinate system P, the structure of the top spray in one embodiment of the present invention will be described.

[0027] See Figure 1 and 2 The top spray includes a housing 1, a water outlet 2, a filter element 3, and a sealing cap 4. The upper side of the housing 1 has a top spray inlet A, and a ball-joint water inlet assembly 5 is installed inside the top spray inlet A (see...). Figure 8 Water enters the top spray nozzle from the water inlet connector assembly 5. See also Figure 3 and 4 The housing 1 includes a first sub-housing 11 and a second sub-housing 12. The first sub-housing 11 is a hollow housing with an upper opening A, a lower opening C, and a side opening B. The upper opening is the top spray inlet A, the side opening is the filter cartridge mounting port B, and the water outlet 2 is located inside the lower opening C. The second sub-housing 12 is fixed inside the first sub-housing 11 and is joined with the first sub-housing 11 to form a filter chamber 10 (see...). Figure 8), the filter element 3 is installed in the filtering chamber 10, the second sub-housing 12 comprises a bottom plate part 121, a vertical plate part 122 and a vertical pipe part 123, the vertical plate part 122 and the vertical pipe part 123 are vertically arranged on the bottom plate part 121, and two housing water outlets 1211 are arranged on the bottom plate part 121. The upper end of the vertical pipe part 123 is communicated with the top spray water inlet A, and the upper end of the vertical pipe part 123 is sleeved with a water inlet sealing ring 13, and the water inlet sealing ring 13 abuts against the side wall of the top spray water inlet A. The vertical plate part 122 is provided with a water inlet hole 1221, which is communicated with the vertical pipe part 123 to form a water supply channel 100.

[0028] The housing water outlet 1211 and the vertical pipe part 123 are located on one side of the vertical plate part 122, the filter element 3 is located on the other side of the vertical plate part 122, the vertical plate part 122 is provided with a sealing ring mounting groove 1222, a gland sealing ring 14 is clamped in the sealing ring mounting groove 1222, when the filter element 3 is installed in the filtering chamber 10, the water inlet end of the filter element 3 abuts against the gland sealing ring 14, thereby dividing the filtering chamber 10 into a first area I and a second area II, i.e. defining the space between the water inlet end of the filter element 3 and the vertical plate part 122 as the first area I, and defining the space of the filtering chamber 10 outside the first area I and the filter element 3 as the second area II. The water flowing from the water inlet hole 1221 to the housing water outlet 1211 needs to pass through the first area I and then the filter element 3, and no water that has not been filtered by the filter element 3 will flow into the water outlet body 2 from the housing water outlet 1211. The lower side of the second sub-housing 12 is provided with a sealing gasket 15 corresponding to the housing water outlet 1211, and the sealing gasket 15 is provided with a through hole 151 corresponding to the housing water outlet 1211.

[0029] In the production of the housing 1, the gland sealing ring 14 and the water inlet sealing ring 13 need to be installed on the second sub-housing 12 first, and then the second sub-housing 12 is assembled and welded with the first sub-housing 11.

[0030] Referring to Figure 5 and 6The water outlet body 2 comprises, from top to bottom, a water inlet disc 21, a distribution disc 22 and a water outlet disc 23. The water inlet disc 21 is provided with two first water inlet holes 211, two second water inlet holes 212 and two third water inlet holes 213. The distribution disc 22 is provided with six first distribution holes 221, six second distribution holes 222 and two third distribution holes 223. The water outlet disc 23 is annular in structure and is provided with a first water outlet hole 231 and a second water outlet hole 232. The water outlet disc 23 surrounds a water outlet sheet 24, which is provided with a third water outlet hole 241. When the shell water outlet 1211 communicates with the first water inlet hole 211, water flows through the first distribution hole 221 and flows out of the first water outlet hole 231, which is shower water. When the shell water outlet 1211 communicates with the second water inlet hole 212, water flows through the second distribution hole 222 and flows out of the second water outlet hole 232, which is spray water. When the shell water outlet 1211 communicates with the third water inlet hole 213, water flows through the third distribution hole 223 and flows out of the third water outlet hole 241, which is pressurized water.

[0031] The water outlet body 2 further comprises a water outlet sealing ring 25 and a fixing ring 26. The lower side of the distribution disc 22 is provided with a water outlet sheet mounting groove 220. The water outlet sealing ring 25, the water outlet sheet 24 and the fixing ring 26 are sequentially arranged from top to bottom. The fixing ring 26 is screwed with the water outlet sheet mounting groove 220. The water outlet sealing ring 25 and the water outlet sheet 24 are fixed in the water outlet sheet mounting groove 220 by making the water outlet sealing ring 25 abut against a ring of bosses 224 in the water outlet sheet mounting groove 220, thereby achieving sealing. After water flows out of the third distribution hole 223, it can only flow out of the third water outlet hole 241 to top spray.

[0032] The water outlet body 2 is installed on the second sub-shell 12 by means of a screw 20, which is located above the water outlet sheet 24. The lower side of the second sub-shell 12 is provided with a stepped shaft 124, and the water outlet body 2 is provided with a bushing corresponding to the stepped shaft 124, in which the stepped shaft 124 is inserted. The screw 20 passes through a washer 200 and is fixed on the stepped shaft 124. A screw mounting groove corresponding to the screw 20 extends upward from the stepped shaft 124 to below the stand pipe portion 123 and is not communicated with the stand pipe portion 123.

[0033] The stepped shaft 124 comprises an upper shaft body 1241, a middle shaft body 1242 and a lower shaft body 1243 in order from top to bottom, the outer circumferential surface of the lower shaft body 1243 is a hexagonal prism surface, the lower shaft body 1243 is inserted into the upper side groove matched with the washer 200, so that the washer 200 cannot rotate relative to the stepped shaft 124. The outer circumferential surface of the washer 200, the upper shaft body 1241 and the middle shaft body 1242 is a cylindrical surface, the outer diameter of the washer 200 is greater than the outer diameter of the middle shaft body 1242, so that an annular positioning groove around the middle shaft body 1242 is formed between the washer 200 and the upper shaft body 1241, the inner wall of the insertion hole in the center of the water outlet body 2 has an annular convex edge 214 matched with the annular positioning groove, the annular convex edge 214 is located in the annular positioning groove, so that the water outlet body 2 cannot move up and down relative to the shell 1.

[0034] The lower side of the second sub-shell 12 is further provided with an elastic positioning block 16, the elastic positioning block 16 comprises a counterbore 161, a compression spring 162 and a positioning sleeve 163 arranged on the bottom plate 121, the compression spring 162 and the positioning sleeve 163 are arranged from inside to outside on the counterbore 161, the upper side of the water inlet disc 21 is provided with three positioning grooves 215 for cooperating with the positioning block 16, the switching of the positioning sleeve 163 between different positioning grooves 215 produces a collision sound for prompting that the switching has been in place, so as to facilitate the user to rotate the water outlet body 2 to the accurate position. The periphery of the water inlet disc 21 is further provided with two groups of positioning protrusions 216, the shunt disc 22 is provided with two groups of limit protrusions 226 arranged at intervals at positions corresponding to the positioning protrusions 216, the limit protrusions 226 form a limit insertion groove 225 therebetween, the water inlet disc 21 is pre-positioned with the shunt disc 22 by being inserted into the limit insertion groove 225 of the shunt disc 22, and the limit protrusions 226 on the shunt disc 22 cooperate with the slotted groove 125 on the bottom plate 121 to limit the rotation range of the water outlet body 2. Referring to Figure 7 The inner side annular wall of the sealing cover 4 is provided with a plurality of L-shaped support strips 41, the outer wall of the water outlet end of the filter element 3 is clamped in each L-shaped support strip 41 in an interference fit, through the above arrangement, a water passing space that can communicate with the water path is formed between the filter element 3 and the sealing cover 4, and between the filter element 3 and the inner wall of the filtering chamber 10, which can effectively increase the flow area between the water outlet end of the filter element 3 and the sealing cover 4, and promote the flow speed of the second area II of the filtering chamber 10.

[0035] The sealing cover 4 is sleeved with a water outlet end sealing ring 42, when the sealing cover 4 is covered on the filter element mounting port B, the water outlet end sealing ring 42 abuts against the chamber wall of the filtering chamber 10, so that water cannot flow out of the filtering chamber 10 from the filter element mounting port (see Figure 8 ). The sealing cover 4 has a pinch hand 43 and at least two circumferential clamping blocks 44, the chamber wall of the filtering chamber 10 is provided with clamping grooves corresponding to the circumferential clamping blocks 44 (see Figure 4), the circumferential clamping block 44 is clamped into the clamping groove by rotating the sealing cover 4 through the clamping handle 43, so as to fix the sealing cover 4 relative to the shell 1.

[0036] Referring to Figure 8 , the water enters the top shower from the water inlet connector assembly 5, and since the water inlet connector assembly 5 and the top shower water inlet A are both sealed by the sealing ring, the water can only enter the stand pipe part 123 from the upper end of the stand pipe part 123, and then flow to the first area I of the filter chamber 10 through the water inlet hole 1221 on the stand plate part 122 to the water inlet end of the filter core 3. The water inlet end surface of the filter core 3 is uniformly provided with a plurality of water inlet holes, so that the water can uniformly enter the filter core 3 and fully contact the filter material in the filter core 3. The water comes to the water outlet end of the filter core 3, and the water outlet end surface of the filter core 3 is uniformly provided with a plurality of water outlet holes, so that the water can uniformly flow out of the filter core 3 to the gap between the sealing cover 4 and the water outlet end of the filter core 3, to the second area II of the filter chamber 10, and then turn back to flow to the two shell water outlets 1211 on the bottom plate part 121, and then flow into the water outlet body 2 from the two shell water outlets 1211. The water flows into the water outlet body 2 from the first water inlet hole 211, the second water inlet hole 212 or the third water inlet hole 213, and then flows out of the water outlet body 2 from the first water outlet hole 231, the second water outlet hole 232 or the third water outlet hole 241 through different water outlet channels.

[0037] The following will be described in combination with Figure 9 , with reference to the ground coordinate system Q, the relative position relationship between the top shower and the user after installation of the top shower is described.

[0038] Referring to Figure 9 , the water inlet pipe T is installed on the wall W, and the top shower is connected with the water inlet pipe T through the water inlet connector assembly 5, so that the water in the water inlet pipe T can flow into the top shower through the water inlet connector assembly 5. In order to make the user have a comfortable distance with the wall W when taking a shower, and also to facilitate the user to replace the filter core 3, the water inlet pipe T is designed to be curved, so that the water outlet body 2 of the top shower faces forward and downward, and the filter core mounting port B faces backward and downward. When installing the top shower, attention should be paid to the position of the filter core mounting port, so that the filter core mounting port can face directly backward and downward, so as to shorten the distance between the sealing cover 4 and the ground G to the greatest extent, and facilitate the user U to reach the clamping handle 43 of the sealing cover 4.

[0039] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the present application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.

Claims

1. A top spray with an easy change filter cartridge, characterized by: The filter cartridge has a water inlet end and a water outlet end, the shell has a top spray water inlet above the water outlet body and at least one shell water outlet (1211) for supplying water to the water outlet body; the water outlet body supports at least two water outlet modes, different water outlet modes correspond to different water outlet channels arranged in the water outlet body and not communicated with each other; the water outlet body is rotationally connected with the shell, the shell water outlet is communicated with the water outlet channel corresponding to different water outlet modes of the water outlet body by rotating the water outlet body relative to the shell, and the water outlet mode switching of the top spray is realized; the shell also has a filter chamber (10) for accommodating the filter cartridge and a filter cartridge mounting port, the filter chamber is transversely arranged above the water outlet body, the filter cartridge is mounted into the filter chamber from the top spray outside through the filter cartridge mounting port, and the top spray also includes a sealing cover (4) for sealing the filter cartridge mounting port in a detachable manner; the top spray water inlet is communicated with the filter chamber through a water supply channel (100), and the shell water outlet is directly communicated with the filter chamber; when the filter cartridge is mounted in the filter chamber, the water inlet end of the filter cartridge covers the connection between the filter chamber and the water supply channel, the connection between the filter chamber and the water supply channel is defined as a first area, a space of the filter chamber located outside the first area and the filter cartridge is defined as a second area, the second area is communicated with the water path of the shell water outlet, and water flowing into the water supply channel from the top spray water inlet flows into the filter cartridge through the first area of the filter chamber, and then flows to the shell water outlet through the second area of the filter chamber.

2. The over spray of claim 1 wherein: The filter cartridge is a straight cylinder, one end of which is a water inlet end and the other end is a water outlet end, the water outlet end is fixedly connected with the sealing cover in a detachable manner, and the sealing cover is fixedly connected with the shell in a detachable manner.

3. The over spray of claim 2 wherein: A plurality of L-shaped support strips (41) are arranged on the inner side ring wall of the sealing cover, and the outer wall of the water outlet end of the filter cartridge is clamped in each L-shaped support strip in an interference fit.

4. The over spray of claim 2 wherein: An outlet end sealing ring (42) is sleeved on the sealing cover, when the sealing cover covers the filter cartridge mounting port, the outlet end sealing ring abuts against the chamber wall of the filter chamber, so that water cannot flow out of the filter cartridge mounting port from the filter chamber; the sealing cover has a pinch hand (43) and at least two circumferential clamping blocks (44), the chamber wall of the filter chamber is provided with a clamping groove corresponding to the circumferential clamping block, and the circumferential clamping block is clamped into the clamping groove by pinching the pinch hand and rotating the sealing cover, so as to realize the fixation of the sealing cover relative to the shell.

5. The over spray of claim 1 wherein: The shell comprises a first sub-shell (11) and a second sub-shell (12). The first sub-shell is a hollow shell with an upper opening, a lower opening and a side opening. The upper opening is a top-spraying water inlet, the side opening is a filter core mounting port, and a water outlet body is arranged in the lower opening. The second sub-shell is fixed in the first sub-shell and is spliced with the first sub-shell to form a filtering chamber. The second sub-shell comprises a bottom plate portion (121), a vertical plate portion (122) and a vertical pipe portion (123). The vertical plate portion and the vertical pipe portion are vertically arranged on the bottom plate portion. A shell water outlet is arranged on the bottom plate portion. The shell water outlet and the vertical pipe portion are located on one side of the vertical plate portion, and the filter core is located on the other side of the vertical plate portion. The upper end of the vertical pipe portion is in communication with the top-spraying water inlet. An inlet hole (1221) is arranged on the vertical plate portion and is in communication with the vertical pipe portion to form a water supply channel.

6. The over spray of claim 5 wherein: The upper end of the vertical pipe portion is provided with a step portion, and an inlet sealing ring (13) is sleeved on the step portion. The inlet sealing ring abuts against the side wall of the top-spraying water inlet.

7. The over spray of claim 5 wherein: The vertical plate portion is provided with a circle of sealing ring mounting grooves (1222) around the inlet hole (1221). A gland sealing ring (14) is clamped in the sealing ring mounting grooves. When the filter core is mounted in the filtering chamber, the water inlet end of the filter core abuts against the gland sealing ring, so that the filtering chamber forms a first area between the water inlet end of the filter core and the vertical plate portion.

8. The over spray of claim 5 wherein: A pressing sound device is arranged between the bottom plate portion (121) and the water inlet end surface of the water outlet body. The pressing sound device comprises elastic positioning blocks (16) and a plurality of positioning grooves (215) arranged on the bottom plate portion (121). The elastic positioning blocks (16) comprise a counterbore (161), a compression spring (162) and a positioning sleeve (163) arranged on the bottom plate portion (121). The compression spring (162) and the positioning sleeve (163) are arranged from inside to outside on the counterbore (161). When the water outlet body is rotated, the positioning sleeve (163) is switched between different positioning grooves (215) to produce a collision sound for prompting that the switching is in place.

9. The over spray of claim 1 wherein: The filter core mounting port faces downward and rearward, which facilitates personnel to replace the filter core.

Images