Time delay valve and urinal using same

Abstract

The invention discloses a time-delay valve and discloses a urinal with the time-delay valve, and the time-delay valve is characterized in that a closed coil structure is formed on a shell, and a water passing passage is arranged on the shell; the valve element is installed in the shell, the valve element can move between a first position for closing the water passing channel and a second position for beating the water passing channel relative to the shell, a permanent magnet is installed on the valve element, and when the permanent magnet moves from the second position to the first position along with the valve element, the permanent magnet is driven to rotate. The closed coil structure can generate induction current to slow down the moving speed of the valve element to the second position; the elastic piece is installed between the shell and the valve element and exerts elastic acting force on the valve element, wherein the elastic acting force drives the valve element to move towards the first position. The problem that the delay valve is blocked or the performance is reduced due to water quality is solved; the working stability of the delay valve is enhanced, and delay errors caused by external condition changes are reduced; and the product has low fit tolerance requirement and is easy to process and maintain.

Description

Technical Field

[0001] The invention relates to the technical field of water valves, in particular to a time delay valve and a urinal using the same. Background Art

[0002] Existing time-delay valves generally adopt the following designs: one is to open a pressure relief hole on the piston; the other is to open a pressure relief groove on the inner wall of the main body at the joint between the main body and the piston. These time-delay valves all realize the delay function based on the principle of pressure difference. The structural design of these time-delay valves is complex and requires high manufacturing precision, which not only increases the difficulty of processing, but also increases the production cost. More importantly, these time-delay valves are extremely sensitive to water pressure fluctuations. Even a small change in water pressure can significantly affect the delay time. After long-term use, the sealing ring of the sealing cavity inside the delay valve is damaged by friction or the loss of lubricating oil, which can easily lead to seal failure or poor return; at the same time, impurities or scale accumulation that may be contained in the water quality will make the delay device easily blocked, which will lead to failure of the delay function. Summary of the invention

[0003] The present invention aims to solve at least one of the above-mentioned technical problems in the related art to a certain extent. To this end, the present invention provides a time delay valve.

[0004] To achieve the above object, the technical solution of the present invention is as follows:

[0005] The present invention also provides a urinal with the time delay valve.

[0006] The time delay valve according to the first aspect of the present invention comprises:

[0007] A shell body, a closed coil structure is formed on the shell body, and a water passage is provided on the shell body;

[0008] A valve core, the valve core is installed in the housing, the valve core can move relative to the housing between a first position for closing the water passage and a second position for opening the water passage, a permanent magnet is installed on the valve core, when the permanent magnet moves with the valve core from the second position to the first position, the closed coil structure can generate an induced current to slow down the speed of the valve core moving to the second position;

[0009] An elastic member is installed between the housing and the valve core, and the elastic member applies an elastic force to the valve core to drive the valve core to move toward the first position.

[0010] The time-delay valve according to the embodiment of the present invention has at least the following beneficial effects: solving the problem of time-delay valve clogging or performance degradation caused by water quality; enhancing the working stability of the time-delay valve and reducing the time-delay error caused by changes in external conditions; the product has low matching tolerance requirements and is easy to process and maintain.

[0011] According to some embodiments of the present invention, the shell is made entirely or partially of metal, and the cross-section of the metal portion is in a closed ring shape to form the closed coil structure.

[0012] According to some embodiments of the present invention, the permanent magnet is a ring-shaped magnet, the permanent magnet is sleeved on the valve core, and the axial direction of the permanent magnet is consistent with the axial direction of the closing coil.

[0013] According to some embodiments of the present invention, the permanent magnet is a block magnet, and a plurality of the block magnets are sequentially distributed and installed on the valve core along the circumference of the valve core.

[0014] According to some embodiments of the present invention, two magnetic layers are provided on the valve core, and the two magnetic layers are closely distributed along the moving direction of the valve core. Each magnetic layer includes a plurality of permanent magnets that are distributed in sequence around the central axis of the valve core. The permanent magnets of the two magnetic layers are closely arranged one by one and have opposite magnetic poles in the same direction.

[0015] According to some embodiments of the present invention, an end cover is installed at one end of the housing, and the elastic member is connected between the end cover and the valve core.

[0016] According to some embodiments of the present invention, the valve core extends an extension shaft in the axial direction, the permanent magnet is mounted on the extension shaft, and the extension shaft moves axially with the valve core in the housing.

[0017] According to some embodiments of the present invention, a water inlet and a water outlet are provided on the shell, the water outlet is opened on the end of the shell and is located on the moving path of the valve core, a plurality of the water inlets are opened on the circumferential side wall of the shell and are arranged around the water outlet, and the space between the water inlet and the water outlet constitutes the water passage.

[0018] According to some embodiments of the present invention, a sealing member is provided on the end of the valve core, and when the valve core moves to the first position, the sealing member seals the water outlet.

[0019] The urinal according to the second aspect of the present invention comprises a time delay valve.

[0020] The urinal according to the embodiment of the present invention has at least the following beneficial effects: the delay valve is applied, the delay time is stable, it can adapt to various complex water quality environments, has a long service life, and has low maintenance costs.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] FIG1 is a schematic diagram of the structural decomposition of a time delay valve;

[0024] FIG2 is a schematic diagram of the state where the time delay valve is in the second position;

[0025] FIG3 is a schematic diagram of a state where the time delay valve is in a first position;

[0026] FIG4 is a schematic structural diagram of another embodiment of a permanent magnet applied to a valve core;

[0027] FIG. 5 is a schematic diagram of another embodiment of a time delay valve.

[0028] Reference numerals: housing 100 ; water passage 110 ; water inlet 111 ; water outlet 112 ; valve core 200 ; extension shaft 210 ; permanent magnet 300 ; annular magnet 310 ; block magnet 320 ; magnetic layer 330 ; elastic member 400 ; end cover 500 ; sealing member 600 . DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] The present invention relates to a time delay valve, comprising a housing 100 , a valve core 200 and an elastic member 400 .

[0031] As shown in FIG. 1 and FIG. 5 , the housing 100 may be a cylindrical structure or may be in other shapes. As shown in FIG. 2 , the interior of the housing 100 is hollow to form an inner cavity. The valve core 200 and the elastic member 400 are installed in the inner cavity of the housing 100. A closed coil structure is formed on the housing 100, and the closed coil structure may be an annular closed coil or a metal closed ring or other components installed on the housing 100. Alternatively, the closed coil structure is integrally formed on the housing 100, for example, the housing 100 is set as a metal material in the entire or partial position, and the metal material portion on the housing 100 is a ring-shaped structure with a closed cross-section, and the annular metal material portion constitutes a closed coil structure, that is, the entire or partial housing 100 itself is a closed coil structure. A water passage 110 is provided on the housing 100, and the water passage 110 may be a channel structure on the housing 100. In this embodiment, the housing 100 is configured to be a hollow cylinder, one end of the housing 100 is closed, and the other end is open to form a water outlet 112. One or more water inlets 111 are provided on the circumferential side wall of the housing 100, and the plurality of water inlets 111 are arranged around the water outlet 112. The water inlet 111 and the water outlet 112 are connected through the inner cavity of the housing 100 to form a water passage 110. The valve core 200 can move between a first position and a second position relative to the housing 100 in the housing 100, and the water outlet 112 is opposite to one end of the valve core 200. When the valve core 200 moves to the first position, the valve core 200 intercepts and shuts off the water passage 110, and one end of the valve core 200 may be sealed on the water outlet 112. In order to ensure the sealing performance, a sealing member 600 may be installed on the end of the valve core 200, and the sealing member 600 may be a sealing ring. As shown in FIG3 , a step is extended radially inwardly at the edge of the water outlet 112, and the periphery of the sealing member 600 abuts against the step, and cooperates with the valve core 200 to block the water outlet 112, thereby closing the water passage 110. When the valve core 200 moves to the second position, the valve core 200 cancels the interception of the water passage 110 and opens the water passage 110. It can be that when the valve core 200 moves from the first position to the second position, the end of the valve core 200 moves from blocking the water outlet 112 to leaving the water outlet 112, thereby opening the water passage 110. No matter which position the valve core 200 moves to, the water inlet 111 can be communicated with the inner cavity of the housing 100, and the valve core 200 does not need to block the water inlet 111, and the valve core 200 only needs to control the opening and closing of the water outlet 112. A permanent magnet 300 is mounted on the valve core 200. The permanent magnet 300 moves with the valve core 200 relative to the housing 100, and when moving, the permanent magnet 300 changes the magnetic flux of the closed coil structure. An elastic member 400 is mounted between the housing 100 and the valve core 200. The elastic member 400 can be a spring or the like. One end of the housing 100 is set as a water outlet 112, and the other end opposite thereto is also set as an opening, and an end cover 500 is mounted on this end.The end cover 500 and the housing 100 can be connected by threads. One end of the elastic member 400 abuts against the end cover 500, and the other end abuts against the valve core 200. The elastic member 400 has an elastic force on the valve core 200, and the elastic force drives the valve core 200 to move toward the first position. As shown in Figure 3, under the elastic force, the valve core 200 can stay stably in the first position to shut off the water passage 110. When in use, the delay valve can be applied to a urinal, or to a squat toilet or other water-using equipment. One end (water inlet 111) of the water passage 110 can be connected to an external water tank or tap water pipe, and the other end (water outlet 112) of the water passage 110 is connected to the flushing system of the urinal. Under normal circumstances, the valve core 200 is in the first position to shut off the water passage 110. When flushing is required, as shown in FIG. 2 , the valve core 200 can be pressed manually directly or indirectly, and the valve core 200 moves from the first position to the second position, the elastic member 400 is compressed and elastically deformed, the water passage 110 is opened, and the water flows through the water passage 110 to the flushing system. After releasing the hand, the valve core 200 is reset to the first position under the elastic force of the elastic member 400. In the process of the valve core 200 moving from the second position to the first position, the magnetic flux of the permanent magnet 300 passing through the closed coil structure gradually increases, so that the closed coil structure generates an induced current. According to Lenz's law, the magnetic field direction of the induced current on the closed coil structure is the same as the original magnetic field direction, so as to hinder the reduction of the magnetic flux, thereby hindering the movement of the permanent magnet 300 to the first position. However, since the elastic force is greater than the magnetic hindering force, the valve core 200 can still be reset to the first position. The cooperation between the magnet and the closed coil structure slows down the movement speed of the valve core 200 to reset to the first position, that is, the functional effect of the delayed closing of the valve core 200 is realized.

[0032] Compared with the prior art, the time-delay valve of the present invention has a structure for realizing the time-delay function without a pressure relief hole or a groove design, and will not cause problems such as a decrease in the time-delay performance due to clogging of the hole by impurities, scale, etc. There is no need to adopt other sealing structure designs inside the housing 100, and there is no need to worry about the problem of sealing failure caused by wear. The pain point of the time-delay valve being blocked or the performance being decreased due to water quality problems is solved.

[0033] In addition, the delay valve cleverly uses the principle of Lenz's law to achieve a delay effect. When the valve core 200 is pressed and released, the valve core 200 begins to reset. During this process, the magnetic field of the permanent magnet 300 causes a change in the magnetic flux in the closed coil structure, thereby generating an induced current. The magnetic field generated by the induced current will hinder the movement of the permanent magnet 300, slowing down the movement speed of the permanent magnet 300 in the housing 100, thereby achieving a delay effect. By adjusting the strength of the magnetic force, the arrangement, orientation or relative position of the permanent magnet 300, and changing the size of the magnetic flux interface of the closed coil structure, the delay duration can be accurately controlled. The delay duration designed by this structure is not affected by water pressure fluctuations, and can effectively enhance the stability of the delay valve and reduce the delay error caused by changes in external conditions.

[0034] This time delay valve abandons the use of precision parts, which not only significantly reduces the manufacturing cost, but also makes installation and maintenance easier. This design also reduces the probability of failure and improves the reliability of the time delay valve. The product has low matching tolerance requirements and is easy to process and maintain.

[0035] In some specific embodiments of the present invention, as shown in FIG1 , the permanent magnet 300 is an annular magnet 310. The permanent magnet 300 is sleeved on the valve core 200. An annular groove may be provided on the valve core 200, and the annular groove is provided around the central axis of the valve core 200. The moving direction of the valve core 200 is axial. The permanent magnet 300 is clamped on the annular groove. The axial direction of the permanent magnet 300 is consistent with the axial direction of the closed coil.

[0036] Alternatively, as shown in FIG. 4 , the permanent magnet 300 is a block magnet 320. A plurality of block magnets 320 are sequentially distributed and installed on the valve core 200 along the circumference of the valve core 200. This is equivalent to a plurality of block magnets 320 being arranged around the central axis of the valve core 200. The block permanent magnet 300 can be fixed on the valve core 200 by inlaying. Furthermore, two magnetic layers 330 are provided on the valve core 200. The two magnetic layers 330 are closely distributed along the moving direction of the valve core 200, that is, the two magnetic layers 330 are distributed along the axial direction of the valve core 200. Each magnetic layer 330 includes a plurality of block permanent magnets 300 that are sequentially spaced and distributed around the central axis of the valve core 200. The permanent magnets 300 on the two magnetic layers 330 are arranged closely one by one and have opposite magnetic poles in the same direction. Two axially adjacent permanent magnets 300 on two magnetic layers 330 abut against each other, and one of the two permanent magnets 300 has an N pole facing outward, and the other has an S pole facing outward. The two adjacent permanent magnets 300 on the same magnetic layer 330 may have opposite magnetic poles facing outward.

[0037] In some embodiments of the present invention, as shown in FIG. 5 , the valve core 200 extends an extension shaft 210 in the axial direction. The permanent magnet 300 is mounted on the extension shaft 210. The extension shaft 210 moves axially with the valve core 200 in the housing 100. The housing 100 may be cylindrical, or may be a shape other than a cylindrical shape. A barrel portion may extend from the housing 100, and the extension shaft 210 extends into the barrel portion, a closed coil structure is provided on the barrel portion, and the permanent magnet 300 moves axially in the barrel portion with the extension shaft 210.

[0038] In the description of this specification, the description of reference terms such as "some specific embodiments" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0039] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A time delay valve, characterized in that: include: A shell (100), wherein a closed coil structure is formed on the shell (100), and a water passage (110) is provided on the shell (100); A valve core (200), the valve core (200) being installed in the housing (100), the valve core (200) being able to move relative to the housing (100) between a first position for closing the water passage (110) and a second position for opening the water passage (110), a permanent magnet (300) being installed on the valve core (200), and when the permanent magnet (300) moves along with the valve core (200) from the second position toward the first position, the closed coil structure is able to generate an induced current to slow down the speed at which the valve core (200) moves toward the second position; An elastic member (400) is installed between the housing (100) and the valve core (200), and the elastic member (400) applies an elastic force to the valve core (200) to drive the valve core (200) to move toward the first position.

2. The time delay valve according to claim 1, characterized in that: The shell (100) is made entirely or partially of metal material, and the cross-section of the metal material portion is in a closed ring shape to form the closed coil structure.

3. The time delay valve according to claim 1, characterized in that: The permanent magnet (300) is a ring-shaped magnet (310), and the permanent magnet (300) is sleeved on the valve core (200), and the axial direction of the permanent magnet (300) is consistent with the axial direction of the closed coil.

4. The time delay valve according to claim 1, characterized in that: The permanent magnet (300) is a block magnet (320), and a plurality of the block magnets (320) are sequentially distributed and installed on the valve core (200) along the circumference of the valve core (200).

5. The time delay valve according to claim 4, characterized in that: Two magnetic layers (330) are provided on the valve core (200), and the two magnetic layers (330) are closely distributed along the moving direction of the valve core (200), and each magnetic layer (330) comprises a plurality of permanent magnets (300) that are sequentially spaced and distributed around the central axis of the valve core (200), and the permanent magnets (300) of the two magnetic layers (330) are closely arranged in a one-to-one correspondence and have opposite magnetic poles in the same direction.

6. The time delay valve according to claim 1, characterized in that: An end cover (500) is installed at one end of the housing (100), and the elastic member (400) is connected between the end cover (500) and the valve core (200).

7. The time delay valve according to claim 1, characterized in that: The valve core (200) extends an extension shaft (210) in the axial direction, the permanent magnet (300) is mounted on the extension shaft (210), and the extension shaft (210) moves axially in the housing (100) along with the valve core (200).

8. The time delay valve according to claim 1, characterized in that: The shell (100) is provided with a water inlet (111) and a water outlet (112); the water outlet (112) is opened at the end of the shell (100) and is located on the moving path of the valve core (200); a plurality of the water inlets (111) are opened on the circumferential side wall of the shell (100) and are arranged around the water outlet (112); the space between the water inlets (111) and the water outlets (112) constitutes the water passage (110).

9. The time delay valve according to claim 8, characterized in that: A sealing member (600) is provided on the end of the valve core (200); when the valve core (200) moves to the first position, the sealing member (600) blocks the water outlet (112).

10. A urinal, characterized in that: A time delay valve comprising the time delay valve according to any one of claims 1 to 9.

Images