Top shower with filter element easy to replace

Abstract

The invention relates to a top shower, in particular to a top shower with a filter element easy to replace. According to the top shower, the shell structure of the top shower is redesigned, and the convenience of replacing the filter element is improved on the basis that the function of switching the water outlet modes by rotating the water outlet body is reserved. The shell is provided with a filter chamber for accommodating the filter element and a filter element mounting port, the filter chamber is positioned above the water outlet body, the filter element is mounted in the filter chamber through the filter element mounting port from the outside of the top shower, and the top shower further comprises a sealing cover for sealing the filter element mounting port; the top shower water inlet is communicated with the filtering chamber through a water supply channel, and the shell water outlet is directly communicated with the filtering chamber; when the filter element is mounted in the filter chamber, the water inlet end of the filter element covers the joint of the filter chamber and the water supply channel, so that water flowing into the filter chamber from the water supply channel flows through the filter element firstly and then flows to the water outlet of the shell.

Description

Technical Field

[0001] The invention relates to a top spray, in particular to a top spray with an easy-to-replace filter element. Background Art

[0002] Currently, overhead shower heads with filter cartridges on the market generally have the problem of troublesome filter cartridge replacement. Because the installation position of overhead shower heads is relatively high, many users need to stand on a stool to reach it. In addition, in order to replace the filter cartridge, users need to disassemble the overhead shower head, replace the filter cartridge, and then reassemble the overhead shower head, which is a step-by-step operation that consumes time and energy.

[0003] In order to improve the convenience of replacing the filter element, patent document CN220195183U proposes a solution, namely, designing the filter element to be quickly removed and installed from the center of the water outlet. However, this also makes it impossible to apply the conventional water outlet rotation structure to this type of overhead shower, so that this type of overhead shower no longer has the function of switching the water outlet mode by rotating the water outlet. Summary of the invention

[0004] The technical problem to be solved by the present invention is how to combine the water outlet rotating structure with the filter element quick-release structure, so as to improve the convenience of replacing the filter element and realize the quick release and installation of the filter element while retaining the function of switching the water outlet mode by rotating the water outlet.

[0005] In order to solve this technical problem, the present invention redesigns the structure of the shell and changes the installation position of the filter element.

[0006] The present invention provides a top showerhead with an easy-to-replace filter element, which comprises a shell, a water outlet body and a filter element, the filter element having a water inlet end and a water outlet end, the shell having a top showerhead water inlet located above the water outlet body and at least one shell water outlet for supplying water to the water outlet body; the water outlet body supports at least two water outlet modes, and different water outlet modes correspond to different water outlet channels that are not connected to each other and are arranged in the water outlet body; the water outlet body is rotatably connected to the shell body, and by rotating the water outlet body relative to the shell body, the shell water outlet is connected to the water outlet channels of the water outlet body corresponding to different water outlet modes, thereby realizing the switching of the water outlet mode of the top showerhead; the shell body also has a filter chamber for accommodating the filter element and a filter element installation port, and the filter chamber is horizontally arranged Above the water outlet, the filter element is installed into the filter chamber from the outside of the top spray through the filter element installation port, and the top spray also includes a sealing cover for sealing the filter element installation port in a detachable manner; the top spray water inlet is connected to the filter chamber through a water supply channel, and the shell water outlet is directly connected to the filter chamber; when the filter element is installed in the filter chamber, the water inlet end of the filter element covers the connection between the filter chamber and the water supply channel, and the connection between the filter chamber and the water supply channel is defined as a first zone, and the space of the filter chamber outside the first zone and the filter element is defined as a second zone, and the second zone is connected to the water channel of the shell water outlet, and the water flowing into the water supply channel from the top spray water inlet flows into the filter element through the first zone of the filter chamber, and then flows to the shell water outlet through the second zone of the filter chamber. Water flows through the top spray water inlet, water supply channel, filter element, space in the filter chamber not occupied by the filter element (second zone), shell water outlet and water outlet in sequence. Water flowing into the top spray from the top spray water inlet is filtered by the filter element before flowing out of the top spray from the water outlet. The filter chamber is located above the water outlet, the filter element installation port faces the side of the shell, and the filter element quick-release structure and the water outlet rotation structure do not interfere with each other.

[0007] Preferably, the filter element is straight-cylindrical, with one end being the water inlet end and the other end being the water outlet end. The water outlet end of the filter element is fixedly connected to the sealing cover in a detachable manner, and the sealing cover is fixedly connected to the housing in a detachable manner. When the sealing cover is removed, the filter element is fixed on the sealing cover and taken out together with the sealing cover, thereby avoiding the problem of the filter element falling off or being inconvenient to take out after the sealing cover is opened. Not preferably, the filter element may also have no fixed connection relationship with the sealing cover, for example, the sealing cover is hinged to the housing, and the filter element installation port is detachably sealed while being connected to the housing in a non-detachable manner.

[0008] The filter element can be detachably fixed to the sealing cover in various ways. In one of the preferred embodiments, a plurality of L-shaped support strips are provided on the inner ring wall of the sealing cover, and the outer wall of the water outlet end of the filter element is inserted into each L-shaped support strip with interference fit. With only a little force, the old filter element can be pulled out of the sealing cover and a new filter element can be inserted. The operation is relatively convenient, and the structure is relatively simple and low-cost. At the same time, the above-mentioned arrangement can form a water-passing space with water communication between the filter element and the sealing cover, and between the filter element and the inner wall of the filter chamber through the L-shaped support strips, which can effectively increase the flow area between the water outlet end of the filter element and the sealing cover, and promote the flow rate of the second zone of the filter chamber; of course, the present invention does not exclude other detachable fixing methods of the filter element and the sealing cover, one of which is that the filter element is fixed to the sealing cover by screws.

[0009] The sealing cover can be detachably fixed to the housing in various ways. For example, a water outlet sealing ring is sleeved on the sealing cover. When the sealing cover is mounted on the filter element installation port, the water outlet sealing ring abuts against the chamber wall of the filter chamber, so that water cannot flow out of the filter chamber from the filter element installation port; the sealing cover has a knob and at least two circumferential clamping blocks. The chamber wall of the filter chamber is provided with a clamping groove corresponding to the circumferential clamping block. The sealing cover is rotated by pinching the knob so that the circumferential clamping block is clamped into the clamping groove, thereby fixing the sealing cover relative to the housing. The sealing cover only needs to be rotated at a small angle for assembly and disassembly, and the operation is relatively quick. For another example, the sealing cover is screwed to the filter element installation port.

[0010] Preferably, the shell includes 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 being a top-spraying water inlet, the side opening being a filter element installation port, and the water outlet being 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 includes a bottom plate portion, a vertical plate portion and a vertical pipe portion, the vertical plate portion and the vertical pipe portion are vertically 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 element is located on the other side of the vertical plate portion, so that water can fully contact the filter material in the filter element after entering the filter element and then flow out of the filter element; the upper end of the vertical pipe portion is connected with the top-spraying water inlet, and a water inlet sealing ring is provided on the upper end of the vertical pipe portion, and the water inlet sealing ring abuts against the side wall of the top-spraying water inlet; a water inlet hole is provided on the vertical plate portion, and the water inlet hole is connected with the vertical pipe portion to form a water supply channel.

[0011] In order to ensure that water flowing from the water supply channel to the filter chamber is filtered by the filter element before flowing into the water outlet of the shell, it is necessary to design a sealing structure between the water inlet end of the filter element and the chamber wall of the filter chamber. Furthermore, the vertical plate portion is provided with a circle of sealing ring installation grooves surrounding the water inlet hole, and a pressure cover sealing ring is clamped in the sealing ring installation groove. When the filter element is installed in the filter chamber, the water inlet end of the filter element abuts against the pressure cover sealing ring, so that the filter chamber forms a first zone between the water inlet end of the filter element and the vertical plate portion.

[0012] Preferably, the water outlet body includes a water inlet plate, a diverter plate and a water outlet plate arranged in sequence from top to bottom, the water inlet plate is provided with a first water inlet hole, a second water inlet hole and a third water inlet hole, the diverter plate is provided with a first diverter hole, a second diverter hole and a third diverter hole, the water outlet plate is an annular structure, the water outlet plate is provided with a first water outlet hole and a second water outlet hole, the water outlet plate is arranged around a water outlet plate, and the water outlet plate is provided with a third water outlet hole; when the shell water outlet is connected to the first water inlet hole, water flows through the first diverter hole, and flows out of the first water outlet hole as shower water; when the shell water outlet is connected to the second water inlet hole, water flows through the second diverter hole, and flows out of the second water outlet hole as spray water; when the shell water outlet is connected to the third water inlet hole, water flows through the third diverter hole, and flows out of the third water outlet hole as pressurized water. The user can switch the top spray between shower water, spray water and pressurized water by rotating the water outlet body to obtain three shower experiences.

[0013] Preferably, the water outlet body further includes a water outlet sealing ring and a fixing ring. The lower side of the diverter plate is provided with a water outlet plate mounting groove. The water outlet sealing ring, the water outlet plate and the fixing ring are arranged in sequence from top to bottom. The fixing ring is screwed with the water outlet plate mounting groove to fix the water outlet sealing ring and the water outlet plate in the water outlet plate mounting groove. After unscrewing the fixing ring, the water outlet plate can be removed for cleaning. Not preferably, the water outlet plate is fixed to the water outlet plate in an irremovable manner.

[0014] The top shower also includes a screw, through which the water outlet is mounted on the shell, the screw is located above the water outlet piece, and the water outlet tray has a shielding effect on the screw, making the appearance of the top shower more beautiful.

[0015] A stepped shaft is provided on the lower side of the shell, and a socket is correspondingly provided on the water outlet body, and the stepped shaft is inserted in the socket; a screw passes through a washer and is fixed on the stepped shaft; the stepped shaft includes an upper shaft body, a middle shaft body and a lower shaft body which are tapered from top to bottom, and the outer peripheral surface of the lower shaft body is a non-cylindrical surface (for example, a hexagonal prism surface or a pentagonal prism surface), and the lower shaft body is inserted in the washer, so that the washer cannot rotate relative to the stepped shaft; the outer peripheral surfaces of the washer, the upper shaft body and the middle shaft body are cylindrical surfaces, and the outer diameter of the washer is larger than the outer diameter of the middle shaft body, so that an annular positioning groove surrounding the middle shaft body is formed between the washer and the upper shaft body, and an annular convex edge matching the annular positioning groove is provided on the inner wall of the socket, 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 THE DRAWINGS

[0016] Figure 1 This is a three-dimensional view of a top showerhead according to an embodiment of the present invention; Figure 2 for Figure 1 The structural exploded view of the top spray shown; Figure 3 and 4 for Figure 2The structural decomposition diagram of part A from different perspectives is shown; Figure 5 and 6 for Figure 2 The structural exploded diagram of part B from different perspectives shown; Figure 7 for Figure 2 An exploded view of the structure of part C is shown; Figure 8 for Figure 1 A cross-sectional view of the top spray shown; Fig. 9 for Figure 1 The installation diagram of the overhead shower is shown. DETAILED DESCRIPTION

[0017] In order to facilitate the description of the relative positional relationship between different parts of the top shower provided by the present invention and the relative positional relationship between different parts of the same part, the present application document places the top shower in a top shower coordinate system P for description. The "up" and "down" directions of the top shower coordinate system P are shown in the appendix of the present application document. Figure 1 There are clear instructions.

[0018] In order to facilitate the description of the relative position relationship between the top shower provided by the present invention and the user after installation, the present application document also establishes a ground coordinate system Q. The four directions of "up", "down", "front" and "back" of the ground coordinate system Q are shown in the appendix of the present application document. Fig. 9 There are clear instructions.

[0019] The following is combined with Figures 1 to 8 , referring to the top spray coordinate system P, the structure of the top spray of one embodiment of the present invention is described.

[0020] See also Figure 1 and 2 The top shower comprises a housing 1, a water outlet 2, a filter element 3 and a sealing cover 4. The upper side of the housing 1 is provided with a top shower water inlet A, and a ball-jointed water inlet joint assembly 5 is installed in the top shower water inlet A (see Figure 8 ), water enters the top shower from the water inlet joint assembly 5. 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 having an upper opening A, a lower opening C and a side opening B. The upper opening is a top spray water inlet A, the side opening is a filter element installation port B, and the water outlet 2 is arranged in the lower opening C. The second sub-housing 12 is fixed in the first sub-housing 11 and is spliced ​​with the first sub-housing 11 to form a filter chamber 10 (see Figure 8), the filter element 3 is installed in the filter chamber 10, the second sub-shell 12 includes a bottom plate portion 121, a vertical plate portion 122 and a vertical pipe portion 123, the vertical plate portion 122 and the vertical pipe portion 123 are vertically arranged on the bottom plate portion 121, and two shell water outlets 1211 are arranged on the bottom plate portion 121. The upper end of the vertical pipe portion 123 is connected with the top spray water inlet A, and a water inlet sealing ring 13 is sleeved on the upper end of the vertical pipe portion 123, and the water inlet sealing ring 13 abuts against the side wall of the top spray water inlet A. A water inlet hole 1221 is arranged on the vertical plate portion 122, and the water inlet hole 1221 is connected with the vertical pipe portion 123 to form a water supply channel 100.

[0021] The shell water outlet 1211 and the vertical pipe part 123 are located on one side of the vertical plate part 122, and the filter element 3 is located on the other side of the vertical plate part 122. A circle of sealing ring installation grooves 1222 are provided on the vertical plate part 122, and a gland sealing ring 14 is clamped in the sealing ring installation groove 1222. When the filter element 3 is installed in the filter chamber 10, the water inlet end of the filter element 3 abuts against the gland sealing ring 14, and the filter chamber 10 is divided into a first zone I and a second zone II whose waterways are isolated from each other, that is, the space formed by the filter chamber 10 between the water inlet end of the filter element 3 and the vertical plate part 122 is defined as the first zone I, and the space of the filter chamber 10 outside the first zone I and the filter element 3 is defined as the second zone II. Water flowing from the water inlet hole 1221 to the shell water outlet 1211 must first pass through the first zone I and then pass through the filter element 3. No water that has not been filtered by the filter element 3 will flow into the water body 2 from the shell water outlet 1211. A sealing gasket 15 is provided on the lower side of the second sub-shell 12 corresponding to the shell water outlet 1211 , and a through hole 151 is provided on the sealing gasket 15 corresponding to the shell water outlet 1211 .

[0022] When producing the housing 1 , the gland seal ring 14 and the water inlet seal ring 13 need to be installed on the second sub-housing 12 first, and then the second sub-housing 12 and the first sub-housing 11 are assembled and welded.

[0023] See also Figure 5 and 6The water outlet body 2 includes an inlet plate 21, a diverter plate 22 and an outlet plate 23 which are arranged in sequence from top to bottom. The inlet plate 21 is provided with two first water inlet holes 211, two second water inlet holes 212 and two third water inlet holes 213. The diverter plate 22 is provided with six first diverter holes 221, six second diverter holes 222 and two third diverter holes 223. The outlet plate 23 is an annular structure. The outlet plate 23 is provided with a first water outlet hole 231 and a second water outlet hole 232. The outlet plate 23 is arranged around a water outlet sheet 24, and the water outlet sheet 24 is provided with a third water outlet hole 241. When the shell water outlet 1211 is connected with the first water inlet hole 211, water flows through the first diverter hole 221, and flows out from the first water outlet hole 231 as shower water; when the shell water outlet 1211 is connected with the second water inlet hole 212, water flows through the second diverter hole 222, and flows out from the second water outlet hole 232 as spray water; when the shell water outlet 1211 is connected with the third water inlet hole 213, water flows through the third diverter hole 223, and flows out from the third water outlet hole 241 as pressurized water.

[0024] The water outlet body 2 also includes a water outlet sealing ring 25 and a fixing ring 26. A water outlet plate mounting groove 220 is provided on the lower side of the diverter plate 22. The water outlet sealing ring 25, the water outlet plate 24 and the fixing ring 26 are arranged in sequence from top to bottom. The fixing ring 26 is screwed to the water outlet plate mounting groove 220. By making the water outlet sealing ring 25 abut against a circle of bosses 224 in the water outlet plate mounting groove 220, the water outlet sealing ring 25 and the water outlet plate 24 are fixed in the water outlet plate mounting groove 220, and sealing is achieved at the same time, so that after water flows out from the third diverter hole 223, it can only flow out from the third water outlet hole 241 for top spraying.

[0025] The water outlet body 2 is mounted on the second sub-shell 12 by means of a screw 20, and the screw 20 is located above the water outlet sheet 24. A stepped shaft 124 is provided on the lower side of the second sub-shell 12, and a plug hole is provided on the water outlet body 2 corresponding to the stepped shaft 124, and the stepped shaft 124 is inserted into the plug hole. The screw 20 passes through a washer 200 and is fixed on the stepped shaft 124, and the screw installation groove corresponding to the screw 20 extends upward from the stepped shaft 124 to the bottom of the vertical pipe part 123, and is not connected to the vertical pipe part 123.

[0026] The stepped shaft 124 includes an upper shaft body 1241, a middle shaft body 1242 and a lower shaft body 1243 which taper from top to bottom. The outer peripheral surface of the lower shaft body 1243 is a hexagonal prism surface. The lower shaft body 1243 is inserted into the upper groove matched with the washer 200, so that the washer 200 cannot rotate relative to the stepped shaft 124. The outer peripheral surfaces of the washer 200, the upper shaft body 1241 and the middle shaft body 1242 are cylindrical surfaces. The outer diameter of the washer 200 is larger than the outer diameter of the middle shaft body 1242, so that an annular positioning groove surrounding 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 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 2 cannot move up and down relative to the housing 1.

[0027] An elastic positioning block 16 is also provided on the lower side of the second sub-shell 12, and the elastic positioning block 16 includes a countersunk hole 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 on the countersunk hole 161 from the inside to the outside. Three positioning grooves 215 for cooperating with the positioning block 16 are provided on the upper side of the water inlet tray 21. The positioning sleeve 163 generates a collision sound by switching between different positioning grooves 215 to prompt that the switch is in place, so that the user can rotate the water outlet 2 to the correct position. Two groups of positioning ridges 216 are also provided at the periphery of the water inlet tray 21. The diverter tray 22 is provided with two groups of spaced limiting ridges 226 at positions relative to the positioning ridges 216. A limiting slot 225 is formed between the two limiting ridges 226. The water inlet tray 21 is inserted into the limiting slot 225 of the diverter tray 22 to achieve pre-positioning between the water inlet tray 21 and the diverter tray 22. At the same time, the limiting ridges 226 on the diverter tray 22 cooperate with the slots 125 on the bottom plate 121 to limit the rotation range of the water outlet 2. Figure 7 A plurality of L-shaped support strips 41 are arranged on the inner ring wall of the sealing cover 4, and the outer wall of the water outlet end of the filter element 3 is inserted into each L-shaped support strip 41 with interference fit. Through the above arrangement, a water flow space with water communication can be formed between the filter element 3 and the sealing cover 4, and between the filter element 3 and the inner wall of the filter 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 rate of the second zone II of the filter chamber 10.

[0028] The sealing cover 4 is provided with a water outlet sealing ring 42. When the sealing cover 4 is placed on the filter element installation opening B, the water outlet sealing ring 42 abuts against the chamber wall of the filter chamber 10, so that water cannot flow out of the filter chamber 10 from the filter element installation opening (see Figure 8 The sealing cover 4 has a knob 43 and at least two circumferential blocks 44. A groove is provided on the chamber wall of the filter chamber 10 corresponding to the circumferential blocks 44 (see Figure 4), by pinching the handle 43 and rotating the sealing cover 4, the circumferential clamping block 44 is clamped into the clamping groove, so that the sealing cover 4 is fixed relative to the housing 1.

[0029] See also Figure 8 After water enters the top spray from the water inlet joint assembly 5, since there are sealing rings between the water inlet joint assembly 5 and the top spray water inlet A, and between the vertical pipe part 123 and the top spray water inlet A, water can only enter the vertical pipe part 123 from the upper end of the vertical pipe part 123, and then flow to the first area I of the filter chamber 10 through the water inlet hole 1221 on the vertical plate part 122 and flow to the water inlet end of the filter element 3. A plurality of water inlet holes are evenly arranged on the end surface of the water inlet end of the filter element 3, so that water can enter evenly. In the filter element 3, after fully contacting the filter material in the filter element 3, the water comes to the water outlet end of the filter element 3. The end surface of the water outlet end of the filter element 3 is evenly provided with a plurality of water outlet holes, so that the water can evenly flow out of the filter element 3, flow to the gap between the sealing cover 4 and the water outlet end of the filter element 3, flow to the second zone II of the filter chamber 10, and then be blocked by the sealing cover 4 and turn back, flow to the two shell water outlets 1211 on the bottom plate 121, and flow into the water outlet 2 from the two shell water outlets 1211. Water flows into the water outlet 2 from the first water inlet hole 211, the second water inlet hole 212 or the third water inlet hole 213, and flows out of the water outlet 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.

[0030] Combine the following Fig. 9 , with reference to the ground coordinate system Q, the relative position relationship between the top shower of this embodiment and the user after installation is described.

[0031] See also Fig. 9 A water inlet pipe T is installed on the wall W, and the top shower is connected to the water inlet pipe T through the water inlet joint assembly 5, so that the water in the water inlet pipe T can flow into the top shower through the water inlet joint assembly 5. In order to allow the user to have a comfortable distance from the wall W when showering, and to facilitate the user to replace the filter element 3, the water inlet pipe T is designed to be curved, so that the water outlet 2 of the top shower faces the front and bottom, and the filter element installation port B faces the rear and bottom. When installing the top shower, pay attention to the position of the filter element installation port, so that the filter element installation port can face the rear and bottom, so as to achieve the purpose of shortening the distance between the sealing cover 4 and the ground G to the greatest extent, and facilitate the user U to reach the handle 43 of the sealing cover 4.

[0032] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A top shower with easy filter replacement, characterized by: The invention comprises a shell (1), a water outlet (2) and a filter element (3), wherein the filter element has a water inlet end and a water outlet end, and the shell has a top spray water inlet located above the water outlet and at least one shell water outlet (1211) for supplying water to the water outlet; the water outlet supports at least two water outlet modes, and different water outlet modes correspond to different water outlet channels that are not connected to each other and are arranged in the water outlet; the water outlet is rotatably connected to the shell, and by rotating the water outlet relative to the shell, the shell water outlet is connected to the water outlet channels of the water outlet corresponding to different water outlet modes, thereby realizing the switching of the top spray water outlet mode; the shell also has a filter chamber (10) for accommodating the filter element and a filter element installation port, and the filter chamber is horizontally arranged on the water outlet. The filter element is installed into the filter chamber from the outside of the top spray through the filter element installation port, and the top spray also includes a sealing cover (4) for sealing the filter element installation port in a detachable manner; the top spray water inlet is connected to the filter chamber through a water supply channel (100), and the shell water outlet is directly connected to the filter chamber; when the filter element is installed in the filter chamber, the water inlet end of the filter element covers the connection between the filter chamber and the water supply channel, and the connection between the filter chamber and the water supply channel is defined as a first zone, and the space of the filter chamber outside the first zone and the filter element is defined as a second zone, and the second zone is connected to the water channel of the shell water outlet, and water flowing into the water supply channel from the top spray water inlet flows into the filter element through the first zone of the filter chamber, and then flows to the shell water outlet through the second zone of the filter chamber.

2. The top shower as claimed in claim 1, characterized in that: The filter element is straight-cylindrical, 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 to the sealing cover in a detachable manner, and the sealing cover is fixedly connected to the shell in a detachable manner.

3. The top spray as claimed in claim 2, characterized in that: A plurality of L-shaped support strips (41) are arranged on the inner ring wall of the sealing cover, and the outer wall of the water outlet end of the filter element is inserted into each L-shaped support strip in an interference fit.

4. The top spray as claimed in claim 2, characterized in that: The sealing cover is sleeved with a water outlet sealing ring (42). When the sealing cover is mounted on the filter element installation opening, the water outlet sealing ring abuts against the chamber wall of the filter chamber, so that water cannot flow out of the filter chamber from the filter element installation opening. The sealing cover has a knob (43) and at least two circumferential clamping blocks (44). A clamping groove is provided on the chamber wall of the filter chamber corresponding to the circumferential clamping block. The sealing cover is fixed relative to the housing by pinching the knob and rotating the sealing cover so that the circumferential clamping block is clamped into the clamping groove.

5. The top shower as claimed in claim 1, characterized in that: The shell comprises a first subshell (11) and a second subshell (12); the first subshell is a hollow shell having an upper opening, a lower opening and a side opening; the upper opening is a top spray water inlet, the side opening is a filter element installation port, and a water outlet is arranged in the lower opening; the second subshell is fixed in the first subshell and is spliced ​​with the first subshell to form a filter chamber; the second subshell 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, 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 element is located on the other side of the vertical plate portion; the upper end of the vertical pipe portion is connected to the top spray water inlet; a water inlet hole (1221) is provided on the vertical plate portion, and the water inlet hole is connected to the vertical pipe portion to form a water supply channel.

6. The top shower as claimed in claim 5, characterized in that: The upper end of the vertical pipe portion is provided with a step portion, and a water inlet sealing ring (13) is sleeved on the step portion, and the water inlet sealing ring abuts against the side wall of the top spray water inlet.

7. The top shower as claimed in claim 5, characterized in that: The vertical plate portion is provided with a circle of sealing ring installation grooves (1222) at positions surrounding the water inlet hole (1221), and a gland sealing ring (14) is clamped in the sealing ring installation groove. When the filter element is installed in the filter chamber, the water inlet end of the filter element abuts against the gland sealing ring, so that the filter chamber forms a first zone between the water inlet end of the filter element and the vertical plate portion.

8. The top shower as claimed in claim 5, characterized in that: A pressing sound device is provided between the bottom plate portion (121) and the water inlet end surface of the water outlet body, the pressing sound device comprising an elastic positioning block (16) provided on the bottom plate portion (121) and a plurality of positioning grooves (215), the elastic positioning block (16) comprising a countersunk hole 161, a compression spring 162 and a positioning sleeve (163) provided on the bottom plate portion (121), the compression spring (162) and the positioning sleeve (163) being provided on the countersunk hole (161) from the inside to the outside, and the water outlet body is rotated, and a collision sound is generated by switching the positioning sleeve (163) between different positioning holes (215) to indicate that the switching is in place.

9. The top shower as claimed in claim 1, characterized in that: The filter element installation opening faces rearward and downward, making it convenient for personnel to replace the filter element.

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