Waterproof hammer device and water outlet device

Abstract

The utility model discloses a water hammer prevention device and a water outlet device, and the water hammer prevention device comprises a body which is provided with a water passing channel, and the side wall of the body is also provided with a through hole communicated with the water passing channel; the elastic sleeve is arranged outside the side wall of the body in a sleeving mode and provided with a function part, and the function part correspondingly blocks the through hole and is suitable for being deformed in the first direction away from the water passing channel under water pressure. According to the technical scheme, the water hammer can be buffered through deformation of the functional part, large installation space is not needed, and installation is easy and convenient.

Description

Technical Field

[0001] The utility model relates to the field of sanitary products, in particular to a water hammer prevention device and a water outlet device. Background Art

[0002] Water hammer, also known as water shock, refers to the phenomenon that the flow rate suddenly changes and the pressure fluctuates greatly during the transportation of water or other liquids due to the sudden opening and closing of valves, the sudden start and stop of water pumps, etc. The existing anti-water hammer device uses the elasticity of the spring to reduce the impact of water hammer, but since the spring needs to be installed, it requires a large space and the spring is also prone to failure. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned defects or problems existing in the background technology and to provide a water hammer prevention device and a water outlet device, which do not require a large installation space and are easy to install.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The first technical solution relates to an anti-water hammer device, which includes: a main body, which is provided with a water channel, and its side wall is also provided with a through hole connected to the water channel; an elastic sleeve, which is sleeved on the outer side wall of the main body and is provided with a functional part, which corresponds to blocking the through hole and is suitable for being subjected to water pressure to deform in a first direction away from the water channel.

[0006] The second technical solution is based on the first technical solution, wherein the through hole is a stepped hole, and the stepped hole is provided with a first hole close to the water channel and a second hole away from the water channel along a first direction, and a stepped surface facing away from the water channel is formed between the first hole and the second hole, and the functional part includes a deformation part and a sealing part which are connected to each other as a whole, the deformation part extends into the first hole and presses against the hole wall of the first hole, and the sealing part presses against the step surface and the hole wall of the second hole.

[0007] The third technical solution is based on the second technical solution, wherein the thickness of the sealing portion along the first direction is greater than the thickness of the deformation portion.

[0008] The fourth technical solution is based on the second technical solution, which further includes a support member, and the surface of the sealing part that is away from the surface that presses against the wall of the second hole is also provided with a pressing surface, and the support member is suitable for pressing against the pressing surface to clamp the sealing part together with the wall of the second hole, and the support member is also provided with a makeshift space suitable for deformation of the deformation part.

[0009] The fifth technical solution is based on the fourth technical solution, wherein the support member is further provided with a limiting portion for limiting the deformation of the deformation portion, and the limiting portion is located on a side of the deformation portion away from the water channel.

[0010] The sixth technical solution is based on any one of technical solutions 1 to 5, wherein the side wall of the main body is also provided with a water outlet connected to the water channel, the elastic sleeve is provided with a connecting portion integrated with the functional portion, the connecting portion surrounds the side wall of the main body, and its two ends are connected to the functional portion, the connecting portion is also provided with an avoidance portion, and the avoidance portion is surrounded outside the water outlet.

[0011] The seventh technical solution relates to a water outlet device, which includes a shell and an anti-water hammer device as described in any one of technical solutions 1 to 6, and the shell accommodates the anti-water hammer device.

[0012] The eighth technical solution relates to a water outlet device, which includes a shell and an anti-water hammer device as described in technical solution 6, the shell accommodating the anti-water hammer device and being provided with a water outlet, the water outlet being suitable for moving relative to the shell in a first state or a second state, when the water outlet is in the first state, the water outlet enters the range of the avoidance portion so that the water outlet is connected to the water outlet; when the water outlet is in the second state, the water outlet exits the range of the avoidance portion.

[0013] The ninth technical solution is based on the eighth technical solution, wherein the main body is suitable for rotating around a first axis so that the water outlet is suitable for rotating around the first axis relative to the shell.

[0014] The tenth technical solution is based on the ninth technical solution, wherein the number of the water outlets is at least two, which are arranged circumferentially around the first axis and along the first axis, and the number of the water passages is the same as the water outlets and are arranged corresponding to the water outlets along the first axis.

[0015] From the above description of the utility model, it can be seen that compared with the prior art, the utility model has the following beneficial effects:

[0016] Since the side wall of the body is provided with a through hole connected to the water channel, and the functional part blocks the through hole accordingly, when water hammer occurs, the water pressure increases so that the functional part deforms in a first direction away from the water channel. At this time, since the elastic sleeve is arranged outside the body, the functional part will not be separated from the through hole, and the water hammer effect can be reduced through elastic deformation. In addition, since the elastic sleeve can form a whole after being arranged outside the side wall of the body, it is relatively simple to install, and only the water flow that may cause water hammer needs to pass through the water channel; at the same time, no large installation space is required.

[0017] However, since a through hole connected to the water channel is provided on the side wall of the main body, and the functional part is deformed in the first direction away from the water channel by water pressure, when the functional part is deformed to reduce the influence of water hammer, the deformation may cause the water in the water channel to leak out from the through hole. For this reason, the through hole is set as a step hole, so that the deformable part extends into the first hole, so as to utilize the deformation of the deformable part to buffer the water hammer. The step surface is made to face away from the water channel, and since the sealing part is also formed by an elastic sleeve, the elasticity of the elastic sleeve itself is utilized to tightly press against the step surface to form a primary seal. Then, the deformable part is made to press against the hole wall of the first hole, so as to avoid the water pressure directly acting on the sealing part and affecting its sealing effect, and at the same time, the deformation caused by the water hammer can be concentrated on the deformable part. In addition, since the sealing part also presses against the hole wall of the second hole, a secondary seal can be formed to improve the sealing effect.

[0018] Although the deformation caused by water hammer is mainly concentrated in the deformation part, the sealing part is connected to the deformation part as a whole. Therefore, when the deformation part is deformed in the first direction under the action of water hammer, it will also drive the sealing part, so that the sealing part is also driven to deform, thereby affecting the sealing effect of the sealing part. Therefore, by making the thickness of the sealing part in the first direction greater than the thickness of the deformation part, the sealing part is not easily deformed by the deformation part, thereby avoiding affecting its own sealing effect to a certain extent. In addition, since the sealing part corresponds to the hole wall of the second hole, the sealing part corresponds to surrounding the deformation part. Therefore, when the deformation part is deformed in the first direction, the sealing part will be subjected to a torque and have a tendency to flip. However, since the thickness of the sealing part in the first direction is greater than the thickness of the deformation part, the sealing part will be more tightly pressed against the hole wall of the second hole under the action of the torque, thereby improving the sealing effect.

[0019] Since the sealing part abuts against the hole wall of the second hole, a secondary seal can be formed. In order to improve the effect of the secondary seal, a support member is added so that the support member abuts against the abutting surface and clamps the sealing part together with the hole wall of the second hole, so that the sealing part can abut against the abutting surface more tightly, thereby improving the effect of the secondary seal. At the same time, since the hole wall of the second hole and the support member clamp the sealing part together, the sealing part itself has already deformed to a certain extent, and then the sealing part can be more difficult to be driven by the deformation of the deformation part, thereby avoiding affecting the sealing effect of the sealing part to a certain extent. In addition, since the support member is provided with a clearance space suitable for the deformation of the deformation part, the deformation part can also reduce the influence of water hammer by deformation.

[0020] Although the deformation part can reduce the influence of water hammer by deformation, the deformation of the deformation part should not be too large, otherwise it will affect the sealing effect of the sealing part. Therefore, by arranging a limiter on the support member, the limiter is located on the side of the deformation part away from the water passage, so that the limiter can limit the deformation of the deformation part, so as to prevent the deformation of the deformation part from being too large and affecting the sealing effect of the sealing part.

[0021] Since the functional part can reduce the influence of water hammer by its deformation as long as the water can flow through the water channel, the direction of the water flow in the water channel can be arbitrary. Therefore, by locating the water outlet on the side wall of the main body and making the connecting part avoid the water outlet, the water flow in the water channel can flow out from the side wall of the main body. In addition, since the connecting part is a part of the elastic sleeve, the connecting part can fit tightly to the side wall of the main body, so the water flowing out of the water outlet will not flow between the connecting part and the side wall of the main body. Furthermore, by making the connecting part form an avoidance part surrounded by the water outlet, when it is not desired for water to flow out of the water outlet, the avoidance part can be sealed against the inner wall of the shell, thereby blocking the water outlet.

[0022] After the anti-water hammer device is installed in the shell to form a water outlet device, a water outlet can be provided on the shell, and then the water outlet can be adapted to move in a first state or a second state relative to the shell, for example, it can rotate relative to the shell around a first axis, so that when the water outlet is in the first state, the water outlet can enter the range of the avoidance portion, and at this time, the avoidance portion can be made to press against the inner wall of the shell around the water outlet, so that the water outlet can be connected to the water outlet. When the water outlet is in the second state, the water outlet exits the range of the avoidance portion, and the water outlet cannot be connected to the water outlet. At this time, the avoidance portion can also be made to press against the inner wall of the shell, thereby blocking the water outlet.

[0023] When the water outlet is able to rotate relative to the shell around the first axis, the number of the water outlets can be at least two, and they can be arranged circumferentially around the first axis and along the first axis, while the number of the water passages can be the same as the water outlets and can be arranged corresponding to the water outlets along the first axis. Therefore, when the water outlet is rotated, one of the water outlets can be located in the first state, thereby connecting to its corresponding water passage, while the remaining water outlets are located in the second state, that is, the remaining water outlets cannot be connected to their corresponding water passages, thereby realizing the switching connection of the water path. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 It is a three-dimensional diagram of the water valve in this embodiment.

[0026] Figure 2 It is a three-dimensional diagram of the elastic sleeve and the support member in this embodiment.

[0027] Figure 3 It is a three-dimensional diagram of the elastic sleeve in this embodiment.

[0028] Figure 4 Schematic diagram of the structure of the body in this embodiment.

[0029] Figure 5 Schematic diagram of the structure of the water valve in this embodiment.

[0030] Figure 6 Schematic diagram of the use of the water valve in this embodiment.

[0031] Description of main reference numerals:

[0032] Main body 1, water channel 2, through hole 3, elastic sleeve 4, functional part 5, first hole 6, second hole 7, step surface 8, deformation part 9, sealing part 10, support member 11, top abutment surface 12, make way space 13, limit part 14, water outlet 15, connecting part 16, avoidance part 17, shell 18, water outlet 19, first axis 20, water inlet 21, first direction 22, avoidance space 23. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are preferred embodiments of the utility model and should not be regarded as excluding other embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0034] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.

[0035] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the specific protection scope of the utility model.

[0036] In the claims, specification and the above drawings of the utility model, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0037] In the claims, specification and drawings of the present utility model, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0038] like Figure 1 , 2 As shown in FIG. 4 , this embodiment provides a water hammer prevention device, which includes a main body 1 , an elastic sleeve 4 and a support member 11 .

[0039] like Figure 4 , 5 As shown, the body 1 is provided with a water passage 2, and the side wall thereof is also provided with a through hole 3 connected to the water passage 2. In this embodiment, the through hole 3 is a stepped hole, and the stepped hole is provided with a first hole 6 close to the water passage 2 and a second hole 7 away from the water passage 2 along the first direction 22, and a stepped surface 8 away from the water passage 2 is formed between the first hole 6 and the second hole 7. In addition, in this embodiment, the body 1 is also provided with a water inlet 21, and the side wall of the body 1 is also provided with a water passage 15, and the water inlet 21 and the water passage 15 are both connected to the water passage 2. Specifically, there are two water passages 15, which are arranged circumferentially around the first axis 20 and arranged at intervals along the first axis 20, and the water inlet 21 is located at the first axis 20. Since the side wall of the body 1 in this embodiment is a revolving surface (i.e., a cylindrical surface), the body 1 is suitable for rotating around the first axis 20 so that the water passage 15 is suitable for rotating around the first axis 20. In other embodiments, the number of water outlets 15 may not be two, and the water outlets 15 and the water inlet 21 may also be located at other positions. For example, the number of the water inlet 21 and the water outlet 15 may be one and both may be located at the first axis 20, that is, the first axis 20 passes through the water inlet 21 and the water outlet 15.

[0040] like Figure 2 , 3 As shown in Figure 5, the elastic sleeve 4 is sleeved outside the side wall of the body 1, and is provided with a functional portion 5 and a connecting portion 16 connected to the functional portion 5 as a whole. The functional portion 5 corresponds to the blocking through hole 3 and is suitable for being deformed in the first direction 22 away from the water passage 2 by water pressure. The connecting portion 16 surrounds the side wall of the body 1, and its two ends are connected to the functional portion 5. The connecting portion 16 is also provided with an avoidance portion 17, which is arranged outside the water outlet 15 to be roughly annular. In this embodiment, there are two water outlets 15, so the number of the avoidance portions 17 is also two and corresponds to the two water outlets 15 respectively. Figure 4-5As shown, the functional part 5 includes a deformable part 9 and a sealing part 10 connected to each other as one body. The deformable part 9 extends into the first hole 6 and abuts against the hole wall of the first hole 6. The sealing part 10 abuts against the step surface 8 and the hole wall of the second hole 7, thereby forming a primary seal and a secondary seal respectively. The deformable part 9 abuts against the hole wall of the first hole 6, which can also prevent the water pressure from directly acting on the sealing part 10 and affecting its sealing effect. At the same time, the deformation caused by water hammer can be concentrated on the deformable part 9. The surface of the sealing part 10 that is away from the hole wall of the second hole 7 is provided with a top abutting surface 12. Therefore, the sealing part 10 in this embodiment is an annular protrusion that matches the shape of the second hole 7, so as to cooperate with the deformable part 9 to form a structure similar to a groove, and the support member 11 described later can be embedded in the groove to abut against the top abutting surface 12. In other embodiments, the sealing part 10 can also be a plate-like structure that matches the shape of the second hole 7. In this case, the sealing part 10 will deform with the deformation of the deformable part 9. In the first direction 22, the thickness of the sealing part 10 is greater than the thickness of the deformable part 9, so that the sealing part 10 is not easily deformed by the deformable part 9, thereby avoiding affecting its own sealing effect to a certain extent. The elastic sleeve 4 is made of rubber, or other elastic materials.

[0041] like Figure 2 , 4 As shown in Figure 5, the support member 11 is suitable for abutting against the top abutting surface 12 so as to clamp the sealing part 10 together with the hole wall of the second hole 7, so that the sealing part 10 can abut against the top abutting surface 12 more tightly, thereby improving the effect of the secondary seal, and at the same time, it can also make the sealing part 10 more difficult to be driven by the deformation of the deformation part 9. The support member 11 is also provided with a clearance space 13 suitable for the deformation of the deformation part 9 and a limiting part 14 for limiting the deformation of the deformation part 9, so as to prevent the deformation of the deformation part 9 from being too large and affecting the sealing effect of the sealing part 10. Specifically, the limiting part 14 is located on the side of the deformation part 9 away from the water channel 2. In this embodiment, the shape of the support member 11 corresponds to the shape of the second hole 7, and is roughly a square frame. The limiting part 14 is a reinforcing rib extending from one side of the frame to the opposite side. In other embodiments, the limiting part 14 can extend from one corner of the frame to the opposite corner, and the number can also be more than one. The support member 11 is also bent around the first axis 20 so that when it abuts against the abutting surface 12, the body 1 can still rotate around the first axis 20 to make the water outlet 15 rotate around the first axis 20. The support member 11 is made of a hard material, such as plastic.

[0042] like Figure 4-6 As shown, in order to illustrate the anti-hammer principle of the anti-hammer device in this embodiment, this embodiment further provides a water outlet device, which includes a housing 18 and the anti-hammer device in this embodiment.

[0043] The shell 18 is suitable for accommodating the anti-water hammer device, and is also provided with a water passage 19. When the anti-water hammer device is placed in the shell 18, the outer wall portions of the body 1 on both sides of the through hole 3 along the first axis 20 are sealed with the shell 18, the avoidance portion 17 is sealed against the inner wall of the shell 18, and the water outlet 15 is suitable for moving relative to the shell 18 in the first state or the second state. When the water outlet 15 is in the first state, the water passage 19 enters the range of the avoidance portion 17 so that the water outlet 15 is connected to the water passage 19. When the water outlet 15 is in the second state, the water passage 19 withdraws from the range of the avoidance portion 17 so that the water passage 19 cannot be connected to the corresponding water outlet 15. Specifically, the number of water passages 19 is the same as that of the water outlet 15 and they are arranged along the first axis 20 corresponding to the water outlet 15, so that when one of the water outlets 15 is in the first state, the remaining water outlets 15 are in the second state. The specific process of switching is as follows.

[0044] The anti-water hammer device in this embodiment can not only prevent water hammer, but also perform waterway switching, as described below.

[0045] like Figure 4-6 As shown, after the water flows into the shell 18 and enters the water channel 2 through the water inlet 21, it can flow to the water outlet 19 corresponding to the water outlet 15 through the water outlet 15 located at the upper part of the figure, and the two water outlets 15 are arranged circumferentially around the first axis 20, so the water outlet 15 located at the lower part of the figure is not facing the corresponding water outlet 19, and because the corresponding avoidance portion 17 is sealed against the inner wall of the shell 18, the lower water outlet 15 cannot be connected to the water outlet 19 located below. When it is necessary to switch the water path, the main body 1 can be rotated around the first axis 20 to allow the water outlet 15 to rotate relative to the shell 18. For example, a hexagonal hole can be set at one end of the main body 1, and a hexagonal wrench can be used to operate the main body 1 to rotate. Since the two water outlets 15 are not only arranged at intervals along the first axis 20 but also arranged circumferentially around the first axis 20, and the two water passages 19 are only arranged at intervals along the first axis 20, the lower water outlet 15 can be connected to the lower water passage 19 while the upper water outlet 15 cannot be connected to the upper water passage 19.

[0046] When water hammer does not occur, the water flows normally, but when water hammer occurs, the water pressure suddenly increases. At this time, since the elastic sleeve 4 is sleeved outside the body 1, the functional part 5 will not be separated from the through hole 3, and an escape space 23 is formed between the deformation part 9 and the inner wall of the shell 18, so it can be deformed along the first direction 22, thereby buffering the water hammer and preventing the shell 18 from being cracked due to excessive water pressure. In addition, when buffering the water hammer, since the deformation part 9 is deformed along the first direction 22, the sealing part 10 will be subjected to a torque and have a tendency to flip, but since the thickness of the sealing part 10 along the first direction 22 is greater than the thickness of the deformation part 9, the sealing part 10 will be more tightly pressed against the hole wall of the second hole 7 under the action of the torque, thereby improving the sealing effect.

[0047] It should be understood that the arrangement of the water inlet 15 and the water inlet 21 is not limited to that in the present embodiment, and the housing 18 is not limited to that in the present embodiment. For example, when the water inlet 21 and the water inlet 15 are both located at the first axis 20, the housing 18 can be two sections of water pipes, which are respectively sealed and connected to the two sides of the through hole 3 of the body 1 along the first direction 22. In this case, the outer side of the deformation part 9 along the first direction 22 is not blocked by the housing 18, so it can also deform along the first direction 22 when water hammer occurs.

[0048] The description of the above specification and embodiments is used to explain the protection scope of the utility model, but does not constitute a limitation on the protection scope of the utility model. Through the enlightenment of the utility model or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent replacements or other improvements to the embodiments of the utility model or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the utility model.

Claims

1. A water hammer protection device, characterized in that: include: A body (1) is provided with a water passage (2), and a through hole (3) communicating with the water passage (2) is also provided on its side wall; An elastic sleeve (4) is sleeved on the outer wall of the main body (1) and is provided with a functional portion (5). The functional portion (5) blocks the through hole (3) and is suitable for being deformed in a first direction (22) away from the water passage (2) under water pressure.

2. A water hammer protection device according to claim 1, characterized in that: The through hole (3) is a stepped hole, and the stepped hole is provided with a first hole (6) close to the water passage (2) and a second hole (7) away from the water passage (2) along a first direction (22); a stepped surface (8) facing away from the water passage (2) is formed between the first hole (6) and the second hole (7); the functional part (5) comprises a deformable part (9) and a sealing part (10) which are connected to each other as a whole; the deformable part (9) extends into the first hole (6) and presses against the hole wall of the first hole (6); and the sealing part (10) presses against the stepped surface (8) and the hole wall of the second hole (7).

3. A water hammer protection device as claimed in claim 2, characterized in that: Along the first direction (22), the thickness of the sealing portion (10) is greater than the thickness of the deformation portion (9).

4. A water hammer protection device as claimed in claim 2, characterized in that: The invention also comprises a support member (11); a surface of the sealing portion (10) which is away from the surface abutting against the wall of the second hole (7) is also provided with an abutting surface (12); the support member (11) is suitable for abutting against the abutting surface (12) so as to clamp the sealing portion (10) together with the wall of the second hole (7); the support member (11) is also provided with a clearance space (13) suitable for allowing the deformation portion (9) to deform.

5. A water hammer protection device as claimed in claim 4, characterized in that: The support member (11) is also provided with a limiting portion (14) for limiting the deformation of the deformable portion (9); the limiting portion (14) is located on a side of the deformable portion (9) away from the water passage (2).

6. A water hammer protection device according to any one of claims 1 to 5, characterized in that: The side wall of the body (1) is also provided with a water outlet (15) connected to the water channel (2); the elastic sleeve (4) is provided with a connecting portion (16) connected to the functional portion (5) as a whole; the connecting portion (16) surrounds the side wall of the body (1) and has two ends connected to the functional portion (5); the connecting portion (16) is also provided with an avoidance portion (17) which is arranged outside the water outlet (15).

7. A water outlet device, characterized in that: The invention comprises a housing (18) and the anti-water hammer device according to any one of claims 1 to 6, wherein the housing (18) accommodates the anti-water hammer device.

8. A water outlet device, characterized in that: It comprises a shell (18) and the anti-water hammer device as claimed in claim 6, wherein the shell (18) accommodates the anti-water hammer device and is provided with a water passage (19), and the water passage (15) is suitable for moving relative to the shell (18) between a first state and a second state, and when the water passage (15) is in the first state, the water passage (19) enters the range of the avoidance portion (17) so that the water passage (15) is connected to the water passage (19); when the water passage (15) is in the second state, the water passage (19) exits the range of the avoidance portion (17).

9. A water outlet device according to claim 8, characterized in that: The main body (1) is suitable for rotating about a first axis (20) so that the water outlet (15) is suitable for rotating about the first axis (20) relative to the shell (18).

10. A water outlet device according to claim 9, characterized in that: The number of the water outlets (15) is at least two, which are arranged circumferentially around the first axis (20) and arranged along the first axis (20); the number of the water passages (19) is the same as that of the water outlets (15) and they are arranged along the first axis (20) corresponding to the water outlets (15).

Images