A delayed water outlet valve and a delayed water outlet device

Abstract

The present invention provides a water outlet delay valve, comprising: a valve body, a valve stem and an operating member that operates the valve stem to move axially along the valve body; a piston is arranged in the valve body, the piston and the inner wall of the valve body surround a pressure chamber, and the valve stem passes through the pressure chamber; a sealing member for sealing the pressure chamber is arranged in the valve body; the operating member drives the valve stem to move from a first position to a second position, and when the valve stem is in the first position, the sealing member seals the pressure chamber; the valve stem has a driving member for driving the piston to move in conjunction, and during the process of the piston moving from the first position to the second position, the valve stem drives the piston to open the water outlet channel. The above-mentioned delayed water outlet valve is easy to operate and has a stable and reliable delay time.

Description

Technical Field

[0001] The invention relates to a water outlet device, in particular to a delayed water outlet device. Background Art

[0002] In daily life, time-delay water valves, namely time-delay faucets, have been widely used in homes and public toilets. The characteristic of the time-delay water valve is that after the user turns off the water outlet button, the time-delay water outlet valve will delay the water outlet for a period of time before shutting off the water outlet.

[0003] Typical products of this type of time-delay water valve include the utility model patent technology with patent number ZL200820162618.8 and the name "A time-delay control valve core" authorized and announced by the State Intellectual Property Office on May 13, 2009. Figure 4 As shown, it "includes a push button and a valve core fixing nut, a water outlet and a water inlet regulator are arranged in sequence below the valve core fixing nut, the valve core fixing nut, the water outlet and the water inlet regulator are stacked together and provided with a central through hole communicating with each other at the center, a valve core rod passes through the central through hole from bottom to top and is connected with the push button, a spring is arranged between the push button and the valve core fixing nut, a sealing gasket is arranged in the central through hole of the valve core fixing nut, the sealing solid cooperates with the valve core rod, a sealing ring is arranged on the valve core rod, the sealing solid cooperates with the central hole of the water inlet regulator, a piston gasket is sleeved on the lower part of the valve core rod, the lower part of the valve core rod is accommodated in a vacuum chamber, the piston gasket is tightly pressed against the wall of the vacuum chamber so that a piston is formed at the lower part of the valve core rod, a delayed water hole is opened upward at the bottom of the valve core rod, the upper water outlet of the delayed water hole is located above the piston gasket and below the sealing ring, and a water outlet communicating with the central through hole is arranged on the water outlet".

[0004] It can be seen that the delay time of the traditional time-delay water valve cannot be adjusted. There are some time-delay water valves in the prior art whose delay time can be adjusted, but the adjustment method is very complicated and the water outlet valve needs to be opened to adjust it, which is difficult for ordinary consumers to operate. Summary of the invention

[0005] The main technical problem to be solved by the present invention is to provide a delayed water outlet valve which is easy to operate and has a stable and reliable delay time.

[0006] In order to solve the above-mentioned technical problems, the present invention provides a water outlet delay valve, comprising: a valve body, a valve stem and an operating member that operates the valve stem to move axially along the valve body; a piston is arranged in the valve body, and the piston and the inner wall of the valve body surround a pressure chamber, and the valve stem passes through the pressure chamber; a sealing member for sealing the pressure chamber is arranged in the valve body; the valve body is also provided with a water outlet channel, and the operating member drives the valve stem to move from a first position to a second position, and when the valve stem is in the first position, the sealing member seals the pressure chamber, and the piston seals the water outlet channel; when the valve stem is in the second position, the sealing member and the pressure chamber are released from the seal, and the piston opens the water outlet channel.

[0007] In a preferred embodiment, the valve stem has a driving member for driving the piston to move in conjunction, and when the piston moves from the first position to the second position, the valve stem drives the piston to open the water outlet channel.

[0008] In a preferred embodiment: the driving member is a push member arranged on the outside of the valve stem and having a diameter larger than the make way channel; during the movement of the valve stem from the first position to the second position, the push member presses against the piston and drives the piston to open the water outlet channel.

[0009] In a preferred embodiment: the valve body is further provided with a movable adjusting member in the pressure chamber to change the movement stroke of the piston, one end of the movable adjusting member is located in the pressure chamber, and the other end is exposed outside the valve body to form an operating end for controlling the movement of the movable adjusting member;

[0010] By changing the movement stroke of the piston, the time it takes for the piston to move between two states is changed, thereby adjusting the length of the delayed water release.

[0011] In a preferred embodiment: the movable adjusting member is arranged on a side of the pressure chamber away from the operating member.

[0012] In a preferred embodiment: the movable adjusting member is a nut, one end of which is exposed outside the valve body to form an operating end, and the other end extends into the pressure chamber through the valve body.

[0013] In a preferred embodiment: the piston has a make way channel for communicating with the pressure chamber, and the sealing member is arranged on the inner wall of the make way channel; the valve stem passes through the make way channel and has a first part and a second part, wherein the diameter of the first part is smaller than that of the second part; when the valve stem is located at the first position, the second part fits with the sealing member; when the valve stem moves from the first position to the second position, the first part moves to the sealing member, and the pressure chamber is communicated with the water outlet channel.

[0014] In a preferred embodiment: the piston has a water replenishment hole connected to the pressure chamber; when the pressure chamber is opened, the water replenishment flow rate of the water replenishment hole is smaller than the water discharge flow rate of the pressure chamber.

[0015] In a preferred embodiment, a return spring is also included. When the piston moves in a direction of reducing the volume of the pressure chamber, the return spring is squeezed to accumulate elastic return force.

[0016] The present invention also provides a delayed water outlet device, which is characterized by comprising the water outlet delay valve as described above.

[0017] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0018] 1. The present invention provides a water outlet delay valve. Since the operating end for controlling the movement of the movable adjusting member is exposed outside the valve body, the movable adjusting member can be adjusted without opening the valve body, thereby changing the delay time, which is very convenient and quick.

[0019] 2. The present invention provides a water outlet delay valve, where no sealing ring is arranged on the valve stem, and the area of ​​the valve stem affected by water pressure is relatively small, and the water pressure is also relatively small. Thus, the water pressure that needs to be overcome when the valve stem is switched is very small.

[0020] 3. The present invention provides a water outlet delay valve, which pushes the piston with the push piece of the valve stem, so that when water outlet is needed, the valve stem can quickly push the piston to open the water outlet channel to obtain the maximum water outlet flow. And the valve stem can push the piston to the same position every time, and will not be affected by the water pressure. In this way, after the delay time is set, as long as the delay time is not reset, the distance of each piston reset is the same, and the delay time can be guaranteed to be roughly the same, ensuring the reliability of delayed water outlet.

[0021] 4. The present invention provides a water outlet delay valve, which provides a first part and a second part with different diameters on the valve stem. When the valve stem is pressed, the first part of the valve stem has a smaller diameter and there is a gap with the seal and is not sealed. The pressure chamber can be opened first to reduce the water pressure in the pressure chamber, and then the piston is driven to move by the push member on the valve stem, which greatly reduces the force of the water pressure on the piston and saves user effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural stereogram of the water outlet delay valve in the preferred embodiment 1 of the present invention;

[0023] Figure 2 It is a structural explosion diagram of the water outlet delay valve in the preferred embodiment 1 of the present invention;

[0024] Figure 3 It is a cross-sectional view of the water outlet delay valve in the preferred embodiment 1 of the present invention in the water-off state;

[0025] Figure 4It is a cross-sectional view of the water outlet delay valve in the preferred embodiment 1 of the present invention when the pressure chamber is opened;

[0026] Figure 5 It is a cross-sectional view of the water outlet delay valve in the preferred embodiment 1 of the present invention in the water flow state;

[0027] Figure 6 It is a cross-sectional view of the water outlet delay valve in the preferred embodiment 1 of the present invention in the delayed water outlet state;

[0028] Figure 7 It is a three-dimensional diagram of the water outlet device in the preferred embodiment 2 of the present invention;

[0029] Figure 8 It is a cross-sectional view of the water outlet device in the preferred embodiment 2 of the present invention in the water-off state;

[0030] Fig. 9 It is a cross-sectional view of the water outlet device in the preferred embodiment 2 of the present invention when the pressure chamber is opened;

[0031] Fig.10 It is a cross-sectional view of the water outlet device in the preferred embodiment 2 of the present invention in the water-flowing state;

[0032] Fig.11 It is a cross-sectional view of the water outlet device in the preferred embodiment 2 of the present invention in the delayed water outlet state. DETAILED DESCRIPTION

[0033] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0034] Example 1

[0035] refer to Figure 1-Figure 6 A water outlet delay valve comprises: a valve body 1, a valve stem 2 and an operating member 3 for operating the valve stem 2 to move axially along the valve body 1; a piston 11 is arranged in the valve body 1, and the piston 11 and the inner wall of the valve body 1 surround a pressure chamber 12, and the valve stem 2 passes through the pressure chamber 12; a sealing member 15 for sealing the pressure chamber 12 is arranged in the valve body 1; the valve body 1 is also provided with a movable adjusting member 13 in the pressure chamber 12 for changing the movement stroke of the piston 11, one end of the movable adjusting member 13 is located in the pressure chamber 12, and the other end is exposed outside the valve body 1 to form an operating end for controlling the movement of the movable adjusting member 13;

[0036] The operating member 3 drives the valve stem 2 to move from the first position to the second position. When the valve stem 2 is at the first position, the sealing member 15 seals the pressure chamber 12. When the valve stem 2 is at the second position, the sealing member 15 and the pressure chamber 12 are released from sealing.

[0037] The valve body 1 is also provided with a water outlet channel. When the pressure chamber 12 is sealed, the water pressure in the pressure chamber 12 increases, and the piston 11 moves in a direction to increase the volume of the pressure chamber 12 and seals the water outlet channel. When the pressure chamber 12 is opened, the water pressure in the pressure chamber 12 decreases, and the piston 11 moves in a direction to reduce the volume of the pressure chamber 12 and opens the water outlet channel.

[0038] By changing the movement stroke of the piston 11, the time taken by the piston 11 to move between the two states is changed, thereby adjusting the duration of the delayed water discharge.

[0039] The above-mentioned water outlet delay valve, since the operating end for controlling the movement of the movable adjusting member 13 is exposed outside the valve body, the movable adjusting member 13 can be adjusted without opening the valve body, thereby changing the delay time. This is very convenient and quick, and ordinary users can also quickly master the adjustment method, which is convenient for daily use.

[0040] In this embodiment, the position where the movable adjusting member 13 is arranged satisfies the following conditions: when the piston 11 moves in the direction of reducing the volume of the pressure chamber 12, the distance between the piston 11 and the movable adjusting member 13 gradually decreases until it abuts against the limit position. The purpose of such arrangement is to arrange the movable adjusting member 13 on the side of the pressure chamber 12 close to the operating member 3. In this way, the operating end of the movable adjusting member 13 can be exposed to the outside through the operating member 3, and the operating member 3 and the operating end are together, which is very convenient for the user to adjust.

[0041] In this embodiment, the movable adjusting member 13 is disposed on a side of the pressure chamber 12 away from the operating member 3. Specifically, the movable adjusting member 13 is a nut, one end of which is exposed outside the valve body 1 to form an operating end, and the other end extends into the pressure chamber 12 through the valve body 1.

[0042] The piston 11 has a clearance channel 113 for connecting to the pressure chamber 12, and the sealing member 15 is arranged on the inner wall of the clearance channel 113; the valve stem 2 passes through the clearance channel 113 and has a first part 21 and a second part 22, wherein the diameter of the first part 21 is smaller than that of the second part 22; when the valve stem 2 is located at the first position, the second part 22 is in contact with the sealing member 15; when the valve stem 2 moves from the first position to the second position, the first part 21 moves to the sealing member 15, and the pressure chamber 12 is connected to the water outlet channel.

[0043] In this embodiment, in order to ensure the reliability of the delay time, the valve stem 2 has a driving member for driving the piston 11 to move in conjunction, and when the piston 11 moves from the first position to the second position, the valve stem 2 drives the piston 11 to open the water outlet flow channel. Specifically, the outer side of the valve stem 2 has a push member 23 with a diameter larger than the clearance channel; when the valve stem 2 moves from the first position to the second position, the push member 23 pushes against the piston 11 and drives the piston 11 to move in conjunction to open the water outlet flow channel.

[0044] Due to the presence of the push member 23, when the user presses the operating member 3 to drive the valve stem 2 to move, the piston 11 can be quickly pushed to the bottom position by the valve stem 2, so that when water needs to be discharged, the valve stem can quickly push the piston to open the water outlet channel to obtain the maximum flow of water. In addition, the valve stem 2 can push the piston 11 to the same position every time and will not be affected by the water pressure. In this way, after the delay time is set, as long as the delay time is not reset, the distance of the piston 11 reset each time is the same, and the delay time can be guaranteed to be roughly the same, ensuring the reliability of delayed water discharge.

[0045] In this embodiment, the piston 11 further has a water replenishment hole 112 connected to the pressure chamber 12 ; when the pressure chamber 12 is opened, the water replenishment flow rate of the water replenishment hole 112 is smaller than the water discharge flow rate of the pressure chamber 12 .

[0046] In this embodiment, a return spring 16 is further included. When the piston 11 moves in a direction to reduce the volume of the pressure chamber 12, the return spring 16 is squeezed to accumulate elastic return force.

[0047] The working state of the water outlet delay valve of Example 1 is described in detail below:

[0048] 1. In the water-off state, the operating member 3 is in the initial position, the valve stem 2 is in the first position, the sealing member 15 and the second portion 22 of the valve stem 2 are in contact with each other to seal the pressure chamber 12, and the pressure chamber 12 is filled with water. The water pressure in the pressure chamber 12 generates an axial upward pressure on the piston 11, pressing the piston 11 against the through hole 14 of the water outlet channel, and the through hole 14 is sealed by the sealing ring 111, and the water outlet channel is closed.

[0049] 2. In the water flow state, the operating member 3 is in the downward position, and the valve stem 2 moves to the second position. During the movement of the valve stem 2 from the first position to the second position, the first part 21 moves to the sealing member 15, and the first part 21 and the sealing member 15 are released from the sealing, and the pressure chamber 12 is connected to the water outlet channel. The water in the pressure chamber flows into the water outlet channel, and the water pressure in the pressure chamber 12 decreases. In addition, during the movement of the valve stem 2 from the first position to the second position, the push member 23 pushes against the piston 11 and drives the piston 11 to move, so the piston 11 moves in the direction of reducing the volume of the pressure chamber to open the water outlet channel. When the operating key 3 is pressed down, the first part 21 moves to the sealing member 15, causing the water in the pressure chamber to flow out, the pressure is reduced, the water pressure on the piston 11 is reduced, the force required for the pressing process is relatively small, and the operation feels light. The reset spring 16 is squeezed to accumulate elastic reset force.

[0050] 3. In the delayed water outlet state, the operating member 3 is located at the initial position, the valve stem 2 moves to the first position, the second part 22 is re-sealed with the sealing member 15, and the pressure chamber is isolated from the water outlet channel. Water flows into the pressure chamber 12 through the water replenishment hole 112, and the water pressure in the pressure chamber 12 begins to increase. The piston 11 moves upward along the axial direction under the action of the water pressure. When the piston 11 moves to the point where the sealing ring 111 fits with the through hole 14, the water outlet channel is closed. During the period from when the operating member 3 returns to the initial position to when the plug 11 moves to the point where the sealing ring 111 fits with the through hole 14, the water outlet delay valve is still in the water outlet state, thus forming a delayed water outlet effect.

[0051] If the distance between the nut and the piston 11 is changed, the stroke that the piston 11 needs to go through from the state of abutting against the nut to the state of sealing the through hole 14 will change, and the movement time of the piston 11 will also change, and the delayed water discharge time will also change accordingly, thereby achieving the purpose of adjusting the delay time.

[0052] Example 2

[0053] refer to Figure 7-11 This embodiment provides a water outlet device, specifically a water outlet faucet, using the delayed water outlet valve of embodiment 1. The delay principle is the same as that of embodiment 1 and will not be described in detail. The operating end is located behind the bottom of the faucet and can be adjusted directly by the user. A delayed water outlet device includes the water outlet delay valve as described above.

[0054] The above is only a preferred embodiment of the present invention and cannot be used to limit the scope of the present invention. That is, equivalent changes and modifications made according to the patent scope of the present invention and the content of the specification should still fall within the scope of the present invention.

Claims

1. A delayed water outlet valve, characterized in that include: A valve body, a valve stem and an operating member that operates the valve stem and moves axially along the valve body; a piston is arranged in the valve body, and the piston and the inner wall of the valve body surround a pressure chamber, and the valve stem passes through the pressure chamber; a sealing member for sealing the pressure chamber is arranged in the valve body; the valve body is also provided with a water outlet channel, and the operating member drives the valve stem to move from a first position to a second position, when the valve stem is in the first position, the sealing member seals the pressure chamber, and the piston seals the water outlet channel; when the valve stem is in the second position, the sealing member and the pressure chamber are unsealed, and the piston opens the water outlet channel; The valve body is also provided with a movable adjusting member in the pressure chamber to change the movement stroke of the piston, one end of the movable adjusting member is located in the pressure chamber, and the other end is exposed outside the valve body to form an operating end for controlling the movement of the movable adjusting member; By changing the movement stroke of the piston, the time it takes for the piston to move between two states is changed, thereby adjusting the length of the delayed water release.

2. A delayed water outlet valve according to claim 1, characterized in that: The valve stem has a driving member for driving the piston to move in conjunction. During the movement of the piston from the first position to the second position, the valve stem drives the piston to open the water outlet channel.

3. A delayed water outlet valve according to claim 2, characterized in that: The driving member is a push member arranged on the outside of the valve stem and having a diameter larger than the clearance channel; when the valve stem moves from the first position to the second position, the push member presses against the piston and drives the piston to open the water outlet channel.

4. A delayed water outlet valve according to claim 1, characterized in that: The movable adjusting member is arranged on a side of the pressure chamber away from the operating member.

5. A delayed water outlet valve according to claim 4, characterized in that: The movable adjusting member is a nut, one end of which is exposed outside the valve body to form an operating end, and the other end of which extends into the pressure chamber through the valve body.

6. A delayed water outlet valve according to claim 1, characterized in that: The piston has a clearance channel for connecting to the pressure chamber, and the sealing member is arranged on the inner wall of the clearance channel; the valve stem passes through the clearance channel and has a first part and a second part, wherein the diameter of the first part is smaller than that of the second part; when the valve stem is located at the first position, the second part is in contact with the sealing member; when the valve stem moves from the first position to the second position, the first part moves to the sealing member, and the pressure chamber is connected to the water outlet channel.

7. A delayed water outlet valve according to claim 1 or 2 or 3 or 4 or 5 or 6, characterized in that: The piston has a water replenishment hole connected to the pressure chamber; when the pressure chamber is opened, the water replenishment flow rate of the water replenishment hole is smaller than the water discharge flow rate of the pressure chamber.

8. The delayed water outlet valve according to claim 7, characterized in that: It also includes a return spring. When the piston moves in a direction of reducing the volume of the pressure chamber, the return spring is squeezed to accumulate elastic return force.

9. A delayed water discharge device, characterized in that It comprises the delayed water outlet valve according to any one of claims 1 to 8.

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