Flow increasing piece, drainage head and drainage valve
By introducing a flow guiding structure into the drain valve, the flow guiding groove or rib forms a rotating vortex, which solves the problems of slow speed and turbulent water flow in traditional drain valves, and achieves a more efficient drainage and flushing effect.
Patent Information
- Application Number
- CN202423239898.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-26
AI Technical Summary
Traditional drain valves have insufficient drainage speed, turbulent water flow, and are prone to creating local vacuum adsorption effects, resulting in poor flushing performance.
By using flow boosters, such as flow guide channels or flow guide ribs, a flow guide structure is set in the flow guide hole of the drain head to drive the water flow to form a rotating downward vortex, thereby breaking the local vacuum adsorption effect and increasing the water flow velocity.
It enhances drainage speed and improves the rinsing effect of bathroom fixtures. The water flow changes from an irregular and turbulent state to a regular rotating vortex, increasing the water flow speed at the moment of rinsing.
Smart Images
Figure CN223660969U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of bathroom sanitary wares, especially to a flow increasing piece, a drain head and a drain valve. BACKGROUND
[0002] In the bathroom sanitary wares industry, such as toilet, wall-hung cistern, hidden cistern and other bathroom sanitary wares, the "drain valve" inside the product is the key component responsible for flushing excrement into the sewer, and the flushing effect directly affects the cleaning degree, and the flushing effect is largely determined by the drain flow. With the same water consumption, if the drain rate of the drain valve increases, it can form greater flushing pressure.
[0003] The traditional drain valve usually includes a drain head and a switch mechanism for controlling the drainage of the drain head, and the drain head is usually straight, that is, the drain hole inside the drain head extends along a straight line. Since the drain valve is installed in the cistern, and the cross section of the cistern is much larger than the diameter of the drain hole, at the moment the existing drain valve is opened, the water around will flow to the upper end of the drain hole, and then be discharged from the lower end of the drain hole. During this process, the water flow is very turbulent and irregular. In addition, when a large amount of water in the cistern enters the narrow drain hole, it is easy to form a local vacuum suction effect (such as a full water mineral water bottle is inverted and then opened at the moment to form a local vacuum suction effect to cause low drain speed), which results in that the drain speed of the existing drain head is not fast enough. SUMMARY
[0004] The utility model aims at solving one of the technical problems existing in the prior art. To this end, the utility model provides a flow increasing piece, which can change the water flow through the drain head from irregular turbulent state to regular downward rotating vortex, thereby improving the drain speed of the drain head.
[0005] The utility model also provides a drain head with the above-mentioned flow increasing piece.
[0006] The utility model also provides a flow increasing piece with the above-mentioned drain head.
[0007] According to the flow increasing piece of the first aspect embodiment of the utility model, the flow increasing piece includes a flow guide body for being installed in the drain head, the flow guide body is provided with a flow guide hole for being connected to the drain hole of the drain head, the flow guide hole is provided with a flow guide structure, the flow guide structure includes a plurality of flow guide grooves distributed at intervals around the axis of the flow guide hole, and the flow guide grooves are used to drive the water passing through the flow guide grooves to produce rotating downward motion to increase the water flow speed.
[0008] The flow increasing member has at least the following beneficial effects: the flow increasing member provided by the utility model can be applied to a drain head, in the process of water drainage of the drain head, when water flows through the flow guide structure on the flow increasing member, the flow guide structure can produce a rotating effect, so that the water flowing through the flow guide structure changes from an irregular turbulent state to a regular downward rotating vortex, and the effect of local vacuum adsorption is destroyed, thus, through the vortex speed increasing effect of the flow guide structure, the water flow speed is finally increased, and the water drainage speed of the drain head is further improved.
[0009] According to some embodiments of the utility model, the rotation direction of the flow guide groove is counterclockwise or clockwise.
[0010] According to some embodiments of the utility model, the flow guide groove is recessed on the inner wall of the flow guide hole, and the groove wall between two adjacent flow guide grooves forms a flow guide part; or, the flow guide structure comprises a plurality of flow guide ribs arranged in a spiral manner, the flow guide ribs are arranged on the inner wall of the flow guide hole, and the flow guide groove is formed by the inner wall of the flow guide hole and the corresponding two adjacent flow guide ribs.
[0011] According to some embodiments of the utility model, the flow guide part or the flow guide rib spirally extends around the axis of the flow guide hole, or the flow guide part or the flow guide rib extends along a straight line inclined to the axis of the flow guide hole.
[0012] According to some embodiments of the utility model, the flow guide body is suitable for a drain head in a cylindrical drain valve or a drain head in a floating paddle type drain valve.
[0013] According to some embodiments of the utility model, the flow guide body is suitable for a threaded fastening type drain head or a bottom hook fastening type drain head.
[0014] The drain head according to the second aspect of the utility model has at least the following beneficial effects: the drain head is provided with the flow increasing member, so that when water flows through the flow guide structure on the flow increasing member in the process of water drainage of the drain head, the flow guide structure can produce a rotating effect, so that the water flowing through the flow guide structure changes from an irregular turbulent state to a regular downward rotating vortex, and the effect of local vacuum adsorption is destroyed, thus, through the vortex speed increasing effect of the flow guide structure, the water flow speed is finally increased, and the water drainage speed of the drain head is further improved.
[0015] The drain head according to the utility model has at least the following beneficial effects: the drain head is provided with the flow increasing member, so that when water flows through the flow guide structure on the flow increasing member in the process of water drainage of the drain head, the flow guide structure can produce a rotating effect, so that the water flowing through the flow guide structure changes from an irregular turbulent state to a regular downward rotating vortex, and the effect of local vacuum adsorption is destroyed, thus, through the vortex speed increasing effect of the flow guide structure, the water flow speed is finally increased, and the water drainage speed of the drain head is further improved.
[0016] According to some embodiments of the utility model, the flow guide body is inserted into the water inlet end of the drain hole.
[0017] According to some embodiments of the present application, the inner diameter D of one end of the drainage hole satisfies: 30mm≤D≤120mm.
[0018] According to the third aspect of the present application, the drainage valve comprises the drainage head.
[0019] According to the third aspect of the present application, the drainage valve comprises the drainage head.
[0020] Additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS
[0021] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings, in which:
[0022] Figure 1 FIG. 1 is a schematic view of a flow-increasing member according to an embodiment of the present application;
[0023] Figure 2 FIG. 2 is a sectional view of a cylindrical drainage valve provided with the flow-increasing member shown in FIG. 1 (the drainage head is a screw fastening type); Figure 1 FIG. 3 is a sectional view of a cylindrical drainage valve provided with the flow-increasing member shown in FIG. 1 (the drainage head is a screw fastening type);
[0024] Figure 3 FIG. 4 is a schematic view of a cylindrical drainage valve provided with the flow-increasing member shown in FIG. 1; Figure 2 FIG. 5 is a schematic view of a floating paddle type drainage valve provided with the flow-increasing member shown in FIG. 1 (the drainage head is a screw fastening type);
[0025] Figure 4 FIG. 6 is a schematic view of a floating paddle type drainage valve provided with the flow-increasing member shown in FIG. 1 (the drainage head is a screw fastening type); Figure 1 FIG. 7 is a schematic view of a floating paddle type drainage valve provided with the flow-increasing member shown in FIG. 1 (the drainage head is a screw fastening type);
[0026] Figure 5 FIG. 8 is a sectional view of a floating paddle type drainage valve provided with the flow-increasing member shown in FIG. 1 (the drainage head is a screw fastening type); Figure 1 FIG. 9 is a schematic view of a floating paddle type drainage valve provided with the flow-increasing member shown in FIG. 1;
[0027] Figure 6 FIG. 10 is a schematic view of a floating paddle type drainage valve provided with the flow-increasing member shown in FIG. 1; Figure 5 FIG. 11 is a schematic view of a floating paddle type drainage valve provided with the flow-increasing member shown in FIG. 1.
[0028] Figure 7 FIG. 12 is a schematic view of a floating paddle type drainage valve provided with the flow-increasing member shown in FIG. 1. Figure 1 REFERENCE NUMERALS:
[0029]
[0030] Cylinder drain valve 01, float drain valve 02, flow guide 100, flow guide hole 110, flow guide structure 120, flow guide groove 121, flow guide rib 122, positioning groove 130, threaded fastening drain head 200a, bottom hook fastening drain head 200b, main body 210, drain hole 211, stud 220, bottom hook 230, external thread 240, switch mechanism 300, outer cylinder 310, water inlet 311, operating part 320, transmission assembly 330, rotating arm 340, cover 350, buoyancy part 360. DETAILED DESCRIPTION
[0031] The embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.
[0032] In the description of the present application, it should be understood that, in relation to the orientation description, for example, the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.
[0033] In the description of the present application, the meaning of several is one or more, and the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.
[0034] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be broadly understood, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application in combination with the specific content of the technical scheme.
[0035] Reference Figure 1 According to the flow increasing member of the first aspect of the present application, the flow guide 100 is used to be installed on the drain head, the flow guide 100 is provided with the flow guide hole 110, the flow guide hole 110 is used to be connected to the drain hole 211 of the drain head, the flow guide hole 110 is provided with the flow guide structure 120 inside, the flow guide structure 120 includes a plurality of flow guide grooves 121 distributed at intervals around the axis of the flow guide hole 110, the flow guide groove 121 is used to drive the water passing through the flow guide groove 121 to produce a rotating downward motion to increase the water flow speed.
[0036] With reference to Figure 2 and Figure 5 The flow increasing member provided by the utility model can be applied to a drain head, and in the process of water drainage of the drain head, the water flow path when the water flow passes through the flow guide structure 120 on the flow increasing member is shown by the arrowed trajectory line shown in Figure 2 and Figure 5 The flow guide structure 120 can play a rotating effect, so that the water flow passing through the flow guide structure 120 changes from an irregular turbulent state into a regular downward vortex, and at the same time, the effect of local vacuum adsorption is destroyed, thereby, through the vortex speed increasing effect of the flow guide structure 120, the water flow speed is finally increased, and the water drainage speed of the drain head is further improved.
[0037] As shown in the direction shown in Figure 1 The rotation direction of the flow guide groove 121 can be counterclockwise. Of course, in other embodiments, the flow guide groove 121 can also be arranged in a clockwise direction.
[0038] In a natural environment, the rotation of the earth from west to east will form a Coriolis effect, in the northern hemisphere, the Coriolis effect will form an effect of driving the water flow vortex to rotate in a counterclockwise direction, and in the southern hemisphere, the Coriolis effect will form an effect of driving the water flow vortex to rotate in a clockwise direction.
[0039] The flow increasing member provided by the utility model, since the flow increasing member and the main body 210 of the drain head are respectively formed, before the flow increasing member is installed in the drain head, the flow increasing member with a suitable rotation direction of the flow guide groove 121 can be selected according to the geographical position of the use area, so that the flow increasing member is adapted to the Coriolis effect of the use area, and thus the Coriolis effect can enhance the rotating effect of the flow increasing member, and the water drainage speed can be more effectively improved.
[0040] According to some embodiments of the utility model, the flow guide groove 121 is recessed on the inner wall of the flow guide hole 110, and the groove wall between the two adjacent flow guide grooves 121 forms a flow guide part; in this way, the flow guide structure 120 can be formed by the flow guide body 100 through stamping or other processes.
[0041] With reference to Figure 1 According to some embodiments of the utility model, the flow guide structure 120 comprises a plurality of flow guide ribs 122 arranged in a spiral manner, the flow guide ribs 122 are arranged on the inner wall of the flow guide hole 110, and the flow guide groove 121 is formed by the inner wall of the flow guide hole 110 and the corresponding two adjacent flow guide ribs 122. Among them, the inner diameter of the flow guide hole 110 gradually decreases along the water drainage direction at the position where the flow guide rib 122 is arranged, in this way, in the production process, the flow guide rib 122 can be formed together with the flow guide body 100 through die casting, injection molding or other processes.
[0042] According to some embodiments of the present application, the distance between the bottom wall of the flow guide groove 121 and the axis of the flow guide hole 110 gradually decreases along the drainage direction of the flow guide hole 110. According to the principle of fluid mechanics, the vortex formed by the water flow passing through the flow guide hole 110 gradually decreases in diameter along the drainage direction of the flow guide hole 110. By the above arrangement, the flow guide hole 110 adapts to the diameter change of the vortex, so that the flow guide structure 120 can better guide the water flow to form a vortex, thereby further improving the drainage speed.
[0043] According to some embodiments of the present application, the flow guide part or flow guide rib 122 extends helically around the axis of the flow guide hole 110. The flow guide part or flow guide rib 122 adopts a spiral shape, which has a better flow increasing effect, but has a high molding difficulty and a high production cost.
[0044] Referring to Figure 1 , according to some other embodiments of the present application, the flow guide part or flow guide rib 122 extends along a straight line inclined to the axis of the flow guide hole 110. The flow guide part or flow guide rib 122 adopts a straight line shape, which can also have a flow increasing effect. Although the flow increasing effect of the straight line shape is weaker than that of the spiral shape, the flow guide part or flow guide rib 122 is easier to form, which can reduce the production cost.
[0045] In the specific implementation process, the person skilled in the art can select the design shape of the flow guide part or flow guide rib 122 according to the actual needs.
[0046] Referring to Figure 2 , Figure 3 , Figure 5 and Figure 6 , according to some embodiments of the present application, the flow guide body 100 is suitable for a drainage head in a cylindrical drainage valve 01 or a drainage head in a floating paddle type drainage valve 02. Of course, the flow guide body 100 can also be suitable for the drainage head of other models of drainage valves.
[0047] Referring to Figure 3 , Figure 4 , Figure 6 and Figure 7 , according to some embodiments of the present application, the flow guide body 100 is suitable for a threaded fastening type drainage head 200a or a bottom hook fastening type drainage head 200b. The threaded fastening type drainage head 200a can be suitable for a cylindrical drainage valve 01 or a floating paddle type drainage valve 02. The bottom hook fastening type drainage head 200b can also be suitable for a cylindrical drainage valve 01 or a floating paddle type drainage valve 02.
[0048] Referring to Figure 4 and Figure 7 , specifically, the bottom hook fastening type drainage head 200b includes a main body 210, a stud 220 and a bottom hook 230. One end of the main body 210 is used for mounting to a pipe Figure 2The lower end of the main body 210 is connected with a threaded stud 220, and the stud 220 is screwed with a bottom hook 230, which can rotate around the stud 220 and adjust the distance between the bottom hook 230 and the main body 210. In the specific implementation process, the bottom hook 230 usually extends into the pipeline from the interface of the pipeline and is clamped at the position where the inner dimension of the pipeline changes. By rotating the main body 210, the bottom hook 230 is rotated relative to the stud 220, and the main body 210 is driven to approach or move away from the interface of the pipeline, so that the drain head is fixed to the pipeline or separated from the pipeline.
[0049] With reference to Figure 2 and Figure 5 , in particular, the threaded drain head 200a includes a main body 210, and the outer periphery of the end of the main body 210 for mounting to the pipeline is provided with an external thread 240, or the inner wall of the end of the main body 210 for mounting to the pipeline is provided with an internal thread, so that the main body 210 can be screwed and fixed to the pipeline through the external thread 240 or the internal thread.
[0050] With reference to Figure 2 to Figure 7 , the drain head according to the second aspect of the present application includes the main body 210 and at least one flow increasing member, and the main body 210 is provided with a drain hole 211. The flow guide body 100 is mounted to the main body 210, and the flow guide hole 110 of each flow guide body 100 is in butt joint with the drain hole 211. The drain head is provided with the flow increasing member, so that when the water flow passes through the flow guide structure 120 of the flow increasing member during the drainage process, the flow guide structure 120 can produce a rotating effect, so that the water flow passing through the flow guide structure 120 changes from an irregular turbulent state to a regular rotating downward vortex, and the effect of local vacuum adsorption is destroyed. Therefore, through the vortex speed increasing effect of the flow guide structure 120, the water flow speed is finally increased, and the drainage speed of the drain head is improved.
[0051] With reference to Figure 2 and Figure 5 , according to some embodiments of the present application, the flow guide body 100 is inserted into the water inlet end of the drain hole 211 (i.e. Figure 2 the upper end of the drain hole 211), and this arrangement makes the installation of the flow guide body 100 convenient, and the flow guide body 100 can produce a rotating effect on the water flow before the water flow enters the drain hole 211, so that the water flow speed can be more effectively improved. In the specific implementation process, the size of the flow guide body 100 can be set to be adapted to the drain hole 211 of the existing drain head, so that the flow increasing member can be directly inserted into the existing drain head to upgrade and modify the existing drain valve, and the upgrade and modification are convenient.
[0052] With reference to Figure 1According to some embodiments of the present application, the flow guide 100 is provided with a positioning groove 130, and the inner wall of the drain hole 211 is provided with a positioning protrusion (not shown in the figure), the positioning protrusion is inserted into the positioning groove 130, so as to fix the flow guide 100 in the circumferential direction, and avoid that the flow guide 100 follows the water flow relative to the main body 210.
[0053] It can be imagined that in some embodiments, the length of the drain hole 211 can be relatively long, at this time, two or more flow increasing members can be selected to be inserted into the drain hole 211, and all the flow increasing members are spliced and matched, thereby the flow increasing member can be used in the drain head with short length of the drain hole 211, and also can be used in the drain head with long length of the drain hole 211.
[0054] Referring to Figure 2 to Figure 7 In the specific implementation process, the drain head can be divided into bottom hook fastening type drain head 200b, threaded fastening type drain head 200a and the like according to different installation modes.
[0055] According to some embodiments of the present application, the inner diameter D of one end of the drain hole 211 satisfies: 30mm≤D≤120mm. Figure 2 and Figure 5 The caliber of the drain head is determined by the inner diameter of one end of the drain hole 211 through which the water flow is discharged, therefore, in the specific implementation process, the inner diameter D of one end of the drain hole 211 (i.e. Figure 2 the lower end of the drain hole 211 in the above-mentioned specific embodiment) can be set to be between 30mm and 120mm.
[0056] Of course, it can be imagined that the drain head provided by the present application can also be set to other sizes according to actual needs, for example, the outer peripheral diameter D of one end of the drain hole 211 can also be set to 25mm or other numerical values.
[0057] Referring to Figure 2 to Figure 7 According to the third aspect embodiment of the present application, the drain valve comprises the above-mentioned drain head. The drain valve provided by the present application can improve the speed of water drainage, thereby when the sanitary wares adopt the drain valve provided by the present application, the sanitary wares can be flushed with higher speed of water flow in the flushing moment, and the flushing effect of the sanitary wares is improved.
[0058] Referring to Figure 2 and Figure 5 The above-mentioned drain valve further comprises a switch mechanism 300, the switch mechanism 300 is located on one side of the main body 210, the switch mechanism 300 is connected with the main body 210, and the switch mechanism 300 has a cover 350, the cover 350 can be away from or close to the drain hole 211 to open or close the drain hole 211.
[0059] According to the switch mechanism 300, the drain valve can be divided into a barrel type drain valve 01, a float type drain valve 02 and the like.
[0060] With reference to Figure 2 to Figure 4 Specifically, in the barrel type drain valve 01, the switch mechanism 300 includes an outer barrel 310, an operation part 320 and a transmission assembly 330, the outer barrel 310 is located on one side of the main body 210 and fixedly connected with the main body 210, a water inlet 311 in communication with the drain hole 211 is arranged between the outer barrel 310 and the main body 210, a cover 350 is slidably installed in one end of the outer barrel 310 close to the main body 210, the operation part 320 is installed on one end of the outer barrel 310 away from the main body 210, the transmission assembly 330 is installed in the outer barrel 310, the operation part 320 is in transmission connection with the transmission assembly 330, the transmission assembly 330 is in transmission connection with the cover 350, when the operation part 320 moves, the operation part 320 drives the cover 350 to slide close to or away from the drain hole 211 through the transmission assembly 330 to close or open the drain hole 211, wherein when the cover 350 is away from the drain hole 211 to open the drain hole 211, the water inlet 311 is in communication with the drain hole 211, thus the water outside the drain valve can first pass through the water inlet 311 and then enter the drain hole 211.
[0061] With reference to Figure 5 to Figure 7 In the float type drain valve 02, the switch mechanism 300 includes a rotating arm 340, the cover 350 is connected to one end of the rotating arm 340, the other end of the rotating arm 340 is rotatably connected to the main body 210, wherein the density of the cover 350 is less than water, or the cover 350 is provided with a buoyant part 360 with a density less than water, thus when the float type drain valve 02 is applied to the sanitary ware and the cover 350 or the buoyant part 360 is soaked in water, the cover 350 or the buoyant part 360 generates buoyancy, and then drives the cover 350 to rotate away from the drain hole 211 through the buoyancy to open the drain hole 211, so as to drain the water around the cover 350, during the draining process, the cover 350 will rotate close to the drain hole 211 again under the action of gravity, thus after the water around the cover 350 is drained, the cover 350 reseals the drain hole 211.
[0062] In some embodiments, a flow guide wheel can also be arranged on the cover 350, and the flow guide wheel is used to form a vortex effect on the water flow entering the drain hole 211, so as to further improve the draining speed of the drain valve.
[0063] The technical features of the above-described embodiments can be combined in any manner, and for the sake of brevity, not all possible combinations of the technical features in the above-described embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.
[0064] The utility model embodiment makes the detailed explanation in combination with the drawing, but the utility model is not limited to the above -mentioned embodiment, still can make various changes in the knowledge range of ordinary skill in the art person who has possessed under the premise of not departing from the utility model tenet.
Claims
1. A flow enhancer, characterized in that, The application relates to a flow guide (100) for a drain head, wherein the flow guide (100) is provided with a flow guide hole (110) for abutting a drain hole (211) of the drain head, and the flow guide hole (110) is provided with a flow guide structure (120), wherein the flow guide structure (120) comprises a plurality of flow guide grooves (121) which are distributed at intervals around an axis of the flow guide hole (110), and the flow guide grooves (121) are used for driving water flowing through the flow guide grooves (121) to generate a rotating downward motion to increase the water flow speed. The rotation direction of the flow guide grooves (121) is counterclockwise or clockwise.
2. The flow enhancer of claim 1, wherein The flow guide grooves (121) are concavely arranged on inner walls of the flow guide hole (110), and groove walls between two adjacent flow guide grooves (121) form flow guide portions; or 3. The flow enhancer of claim 1, wherein, The flow guide structure (120) comprises a plurality of flow guide ribs (122) which are arranged in a spiral manner on the inner walls of the flow guide hole (110), and the flow guide grooves (121) are formed by the corresponding two adjacent flow guide ribs (122) and the inner walls of the flow guide hole (110).
4. The flow guide according to claim 3, wherein The flow guide portions or the flow guide ribs (122) extend spirally around the axis of the flow guide hole (110), or The flow guide portions or the flow guide ribs (122) extend along straight lines which are inclined to the axis of the flow guide hole (110). The flow guide (100) is suitable for a drain head in a cylindrical drain valve (01) or a drain head in a float-type drain valve (02).
5. The flow enhancer of claim 1, wherein, The flow guide (100) is suitable for a threaded fastening type drain head (200a) or a bottom hook fastening type drain head (200b).
6. The flow enhancer of claim 1, wherein, The application relates to a drain head, wherein the drain head comprises:
7. A drain head characterized by, a main body (210) provided with a drain hole (211); at least one flow guide (100) according to any one of claims 1 to 6, wherein the flow guide (100) is mounted on the main body (210), and the flow guide hole (110) of the flow guide (100) abuts the drain hole (211). The flow guide (100) is inserted into a water inlet end of the drain hole (211).
8. The drainage head of claim 7, wherein, An inner diameter D of one end of the drain hole (211) satisfies 30mm <= D <= 120mm.
9. The drain head of claim 7, wherein, The application further relates to a drain head according to any one of claims 7 to 9.
10. A drain valve characterized by,