A method and apparatus for passive timekeeping

Abstract

The application provides a kind of unpowered timing method and device, first cavity fixed in the inside of shell and second cavity capable of synchronous lifting and descending in the inside of shell following working liquid are arranged in the inside of shell, working medium is filled in the inside of first cavity and second cavity, working medium can drive transmission mechanism inside first cavity to act up and down, first cavity and second cavity are communicated by medium flow channel, medium flow channel enables working medium to flow from second cavity to first cavity at first flow rate, to flow from first cavity to second cavity at second flow rate, and first flow rate is greater than second flow rate;So as to avoid direct contact of working medium, flow channel and transmission mechanism with working liquid, avoid pollution erosion or blockage due to contact with working liquid, ensure accurate and efficient work of timing device;Only by the flow rate control of working medium between two cavities, different states of transmission mechanism can be timed.

Description

Technical Field

[0001] This invention relates to the technical field of timing methods and devices, and specifically to a non-powered timing method and device. Background Technology

[0002] A sponge city is a city that, like a sponge, absorbs, stores, infiltrates, and purifies rainwater when it rains, and then "releases" and utilizes the stored water when needed. This technology utilizes rainwater storage facilities to collect rainwater runoff to the required controlled volume, and then combines this with a device (a non-powered slow-release device) to release the rainwater slowly and evenly at a set flow rate. This achieves the effects of rainwater sedimentation, purification, and delayed regulation, not only reducing peak runoff flow but also effectively controlling runoff pollution.

[0003] Currently, when using time-delay regulation technology to control rainwater, there are mainly two methods for controlling water discharge: The first type is without an outflow time control device. After water begins to enter the water storage facility, the rainwater is slowly discharged without a power-driven slow-release device. Rainwater is difficult to effectively store in the water storage space. Water inflow and drainage occur simultaneously, which not only hinders the accurate realization of the system's delayed regulation function, but also makes the disturbance of the incoming water detrimental to the sedimentation, purification, and effective utilization of rainwater in the water storage facility.

[0004] The second type is the pilot-operated, non-powered outflow control device. This device can control the outflow during rainfall (i.e., the rainwater collection process), preventing rainwater from flowing out (or releasing it slowly). After the rainfall ends and no more rainwater enters the system, the pilot-operated, non-powered control device will open the outflow system. Because the operating mechanism of this control device is in direct contact with the collected rainwater, pollutants brought by the rainwater will contaminate and interfere with the device. Furthermore, the time for the collected rainwater to settle and purify is very short, making it difficult to plan and set accurately.

[0005] To ensure the effectiveness of rainwater sedimentation and purification, rainwater generally needs to be allowed to settle for at least 2 hours after the rain stops. Depending on the quality of the influent, the purpose of drainage, and peak-shifting requirements, some situations with high water quality requirements may even require more than 12 hours after the rain stops before discharge.

[0006] Therefore, there is an urgent need to provide a time control device that can accurately measure time to solve the defects and deficiencies in the existing technology and realize drainage control that can be set accurately after rainfall ends. Summary of the Invention

[0007] In order to overcome the defects and shortcomings of the existing technology, the present invention provides a non-powered timing method and device.

[0008] The specific solution provided by this invention is as follows: A non-powered timing method, characterized by the following steps: 1) Determine the start and end points of the timing: The starting point for timing is when the working medium begins to enter the second cavity from the first cavity at the second flow rate; The transmission mechanism is lowered to the preset liquid level, which serves as the end point of the timing. 2) Initially, the first cavity is fixed below the shell, and the second cavity falls below the shell and is lower than the height of the first cavity; 3) When the amount of working fluid entering the shell is greater than the shell's drainage capacity, the liquid level inside the shell rises, the second chamber floats upward and becomes higher than the first chamber, and the working medium flows from the second chamber to the first chamber at the first flow rate. The liquid level of the working medium inside the first chamber rises and is driven to rise to a high position by the buoyancy drive transmission mechanism. 4) When the working fluid no longer enters the housing and the working fluid inside the housing is drained, the second chamber falls to the bottom of the housing by its own gravity and is lower than the height of the first chamber. The working medium flows from the first chamber to the second chamber at the second flow rate. The liquid level of the working medium in the first chamber gradually decreases but does not reach the preset liquid level. At this time, the transmission mechanism is still kept in a high position. 5) When the working medium level inside the first chamber gradually decreases to the preset level, the buoyancy disappears, and the transmission mechanism falls to the initial low position under the action of gravity.

[0009] Furthermore, the present invention also provides a non-powered timing device using the aforementioned method, comprising a housing, wherein a working liquid can enter the housing through an upper inlet and exit the housing through a lower outlet; a first cavity fixed inside the housing and a second cavity that can move up and down synchronously with the working liquid inside the housing are provided inside the housing, wherein the first cavity and the second cavity are both closed cavities and are filled with a working medium, the working medium being able to drive a transmission mechanism inside the first cavity to move up and down, characterized in that: the first cavity and the second cavity are connected by a medium flow channel, and a one-way valve structure is provided inside the medium flow channel; When the working medium flows from the second chamber to the first chamber, the one-way valve structure allows the working medium to flow from the second chamber to the first chamber simultaneously through the first flow channel and the second flow channel at a first flow rate; When the working medium flows from the first chamber to the second chamber, the one-way valve structure allows the working medium to flow from the first chamber to the second chamber at a second flow rate through only the first flow channel; and satisfies: The first flow velocity is greater than the second flow velocity; The flow area of ​​the first channel is smaller than that of the second channel.

[0010] As a further preferred embodiment of the present invention The first cavity is fixedly supported below the housing by a lower support column, and the upper support column inside the first cavity is connected to the lower support column; The second cavity is set inside the housing via a track, and can move up and down synchronously with the working fluid under the limiting action of the track to adjust its height relative to the first cavity.

[0011] As a further preferred embodiment of the present invention The transmission mechanism includes a float and a lifting switch. The float is sleeved on the outer periphery of the upper support column and can move up and down synchronously with the working medium. The lifting switch is located inside the upper support column and is set on top of the float so as to move up and down synchronously with the float.

[0012] As a further preferred embodiment of the present invention The upper parts of the first cavity and the second cavity are connected by a medium gas channel, and the highest point of the working medium inside the first cavity and the second cavity is lower than the location of the medium gas channel.

[0013] This invention also provides a non-powered timing method, characterized by comprising the following steps: 1) Determine the start and end points of the timing: The starting point for timing is when the working medium begins to enter the second cavity from the first cavity at the second flow rate; Move the transmission mechanism to the preset position as the timing endpoint; 2) Initially, the second cavity is lower than the height of the first cavity, the working medium is concentrated inside the second cavity, and the first cavity is in contact with the transmission mechanism; 3) When the amount of working fluid entering the shell is greater than the shell's drainage capacity, the liquid level inside the shell rises. The second chamber is first subjected to buoyancy and rotates around the hinge point in the first direction, making the second chamber higher than the first chamber. The working medium flows from the second chamber to the first chamber at the first flow rate. The resistance of the first chamber to the transmission mechanism disappears, and the transmission mechanism falls freely. 4) When the working fluid no longer enters the shell and the working fluid inside the shell is drained, the first cavity falls back in the second direction around the hinge point due to gravity. Since the working medium is concentrated inside the first cavity at this time, the front end of the first cavity will not touch the transmission mechanism, and the transmission mechanism remains in a free hanging state at this time. 5) Since the working medium level in the second cavity is lower than the working medium level in the first cavity, the working medium flows from the first cavity to the second cavity at the second flow rate. As the working medium gradually enters the second cavity, the second cavity rotates in the second direction around the hinge point due to its own gravity. The resistance of the first cavity to the transmission mechanism is restored until the transmission mechanism is moved to the preset position and the transmission mechanism is lifted to the initial position.

[0014] Furthermore, the present invention also provides a non-powered timing device employing the aforementioned method, comprising a housing, wherein a working liquid can enter the housing through an upper inlet and exit from the housing through a lower outlet; a first cavity, a second cavity, and a transmission mechanism are movably connected within the housing, the first cavity and the second cavity are filled with a working medium, and the first cavity and the second cavity can move relative to the housing under the drive of the working medium and the working liquid, thereby driving the transmission mechanism to achieve a rotational action, characterized in that: the first cavity and the second cavity are connected by a medium flow channel, the medium flow channel allowing the working medium to flow from the second cavity to the first cavity at a first flow rate and from the first cavity to the second cavity at a second flow rate, wherein the first flow rate is greater than the second flow rate.

[0015] As a further preferred embodiment of the present invention The first cavity and the second cavity are configured as an integral structure and are hinged to the upper inner side of the housing; The transmission mechanism is hinged to the upper inner side of the housing; As a further preferred embodiment of the present invention A trigger switch is provided on the side of the first cavity near the transmission mechanism, and a limit part is provided on the top of the second cavity.

[0016] As a further preferred embodiment of the present invention The medium flow channel includes a baffle. A first flow channel is formed between the end of the baffle and the top wall of the first cavity and the second cavity. A second flow channel is opened at the bottom of the baffle, and the flow area of ​​the first flow channel is larger than the flow area of ​​the second flow channel.

[0017] Compared with existing technologies, the technical effects that this invention can achieve include: 1) This invention provides a non-powered timing method and device, which adjusts various parameters of the transmission mechanism, parameters of the first and second cavities, parameters of the medium flow channel, and relevant performance parameters of the working medium to achieve timing of the opening and closing of valves driven by the transmission mechanism, ensuring accurate valve opening and closing and allowing for corresponding adjustments as required.

[0018] 2) The present invention provides a non-powered timing method and device. By filling the interior of both the first cavity and the second cavity with a working medium, the working medium drives the transmission mechanism to achieve up-and-down or rotational movements, thereby avoiding direct contact between the working medium, the flow channel and the transmission mechanism and the working liquid (or a liquid with similar properties), avoiding contamination, erosion or blockage caused by contact with the working liquid, and further ensuring the accurate and efficient operation of the timing device.

[0019] 3) This invention provides a non-powered timing method and device, which can realize timing of different states of the drive device of the transmission mechanism by controlling the flow rate of the working medium between two cavities. The structure is simple and effectively ensures accurate time control. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the initial structure of the first embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the transmission mechanism when it is closed during rainfall, according to the first embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the transmission mechanism opening during rainfall according to the first embodiment of the present invention.

[0024] Figure 5 This is a schematic diagram of the structure after rainfall according to the first embodiment of the present invention.

[0025] Figure 6 This is a schematic diagram of the structure of the second embodiment of the present invention.

[0026] Figure 7 This is a schematic diagram of the initial structure of the second embodiment of the present invention.

[0027] Figure 8 This is a schematic diagram of the structure during rainfall according to the second embodiment of the present invention.

[0028] Figure 9 This is a schematic diagram of the structure of the transmission mechanism in the first state when triggered according to the second embodiment of the present invention.

[0029] Figure 10 This is a schematic diagram of the structure of the transmission mechanism in the second state when it is triggered according to the second embodiment of the present invention.

[0030] Figure 11 This is a schematic diagram of the structure of the transmission mechanism in the third state when it is triggered according to the second embodiment of the present invention.

[0031] Figure 12 This is a schematic diagram of the structure of the transmission mechanism in the fourth state when it is triggered according to the second embodiment of the present invention. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] [First Embodiment] The first embodiment of the present invention provides a non-powered timing method, comprising the following steps: 1) Determine the start and end points of timing: The starting point for timing is when the working medium begins to enter the second chamber from the first chamber at a second flow rate; the ending point for timing is when the transmission mechanism descends to a preset liquid level. In this embodiment, the timing duration between the start and end points can be adjusted in the following ways, such as adjusting various parameters of the transmission mechanism, parameters of the first and second chambers, parameters of the medium flow channel, and relevant performance parameters of the working medium. The rising and falling of the transmission mechanism changes the working state of the valve driven by the transmission mechanism (e.g., opening and closing of the valve), ensuring accurate valve opening and closing and allowing for corresponding adjustments as required. 2) Initially, the first cavity is fixed below the shell, and the second cavity falls below the shell and is lower than the height of the first cavity; at this time, the working medium is concentrated inside the second cavity; 3) When the amount of working fluid entering the shell is greater than the shell's drainage capacity, the liquid level inside the shell rises, the second chamber floats upward and becomes higher than the first chamber, and the working medium flows from the second chamber to the first chamber at the first flow rate. The liquid level of the working medium inside the first chamber rises and is driven to rise to a high position by the buoyancy drive transmission mechanism. 4) When the working fluid no longer enters the housing and the working fluid inside the housing is drained, the second chamber falls to the bottom of the housing and is lower than the first chamber by its own gravity. The working medium flows from the first chamber to the second chamber at the second flow rate. The liquid level of the working medium in the first chamber gradually decreases but does not reach the preset liquid level. At this time, the transmission mechanism is still kept in a high position. 5) When the working medium level inside the first chamber gradually decreases to the preset level, the buoyancy disappears, and the transmission mechanism falls to the initial low position under the action of gravity.

[0036] like Figure 1-5 The diagram shows a non-powered timing device using the method provided in the first embodiment of the present invention. It includes a housing 1, a working liquid (e.g., rainwater, sewage, clean water, weakly alkaline water, or other similar liquids) that enters the housing 1 through an upper inlet and exits through a lower outlet. Inside the housing 1 are a first cavity 2 fixed to the housing 1 and a second cavity 3 that rises and falls synchronously with the working liquid within the housing 1. In this embodiment, as shown... Figure 1 As shown, the first cavity 2 is fixedly supported at the bottom of the housing 1 by the lower support column 62, so the first cavity 2 is fixed inside the housing 1, while the second cavity 3 can achieve lifting and lowering under the buoyancy of the working fluid entering the housing 1; preferably, the second cavity 3 is set inside the housing 1 by a track, and the track provides a limiting function so that the second cavity 3 rises and falls synchronously with the working fluid so that the height position relative to the first cavity 2 can only be adjusted in the vertical direction.

[0037] Both the first cavity 2 and the second cavity 3 are closed cavities filled with a working medium (which can be a clean, flowable medium, such as pure water, detergent, silicone oil, or other chemical liquids, or other flowable liquids with different viscosity coefficients, such as colloids). The working medium drives the transmission mechanism 4 inside the first cavity 2 to achieve lifting and lowering. That is, in this embodiment, the transmission mechanism relies on buoyancy to achieve its lifting and lowering action. Specifically, the transmission mechanism 4 in this embodiment includes a float 41 and a lifting switch 42. The float 41 is sleeved on the outer periphery of the upper support column 61 and can rise and fall synchronously with the working medium. The lifting switch 42 is located inside the upper support column 61 and is set on top of the float 41 to rise and fall synchronously with the float 41. After the lifting switch 42 is opened, the working liquid inside the housing 1 can be discharged through the lower outlet. In this embodiment, the upper support column 61 and the lower support column 62 inside the first cavity 2 are connected to provide a space for the internal lifting switch 42 to accommodate and lift.

[0038] As an inventive point of this application, the first cavity 2 and the second cavity 3 are connected by a medium flow channel 5, which allows the working medium to flow from the second cavity 3 to the first cavity 2 at a first flow rate V1 and from the first cavity 2 to the second cavity 3 at a second flow rate V2, and the first flow rate V1 is greater than the second flow rate V2.

[0039] This configuration ensures that initially, the second cavity 3 is lower than the first cavity 2, and the working medium is concentrated inside the second cavity 3. The first cavity 2 is in contact with the transmission mechanism 4 to maintain the transmission mechanism 4 in its current initial position. When working fluid enters the housing 1 from the inlet, the second cavity 3 gradually floats up under the buoyancy of the working fluid, and the second cavity 3 gradually rises and becomes higher than the first cavity 2. At this time, the working medium inside the second cavity 3 will flow from the second cavity 3 to the first cavity 2 at a first flow rate V1. The working medium entering the first cavity 2 causes the float 41 to rise synchronously and eventually drive the lifting switch 42 to rise. When the rain stops, the working fluid stops entering the housing 1, and the second cavity 3 descends synchronously with the working fluid inside the housing 1, gradually descending to a level lower than the first cavity 2. At this time, the working medium inside the first cavity 2 will flow from the first cavity 2 to the second cavity 3 at a second flow rate V2. The decrease in the liquid level of the working medium inside the first cavity 2 causes the float 41 to descend synchronously and eventually drive the lifting switch 42 to descend.

[0040] Since the first flow velocity V1 is greater than the second flow velocity V2, the lifting switch 42 can be opened quickly and closed with a delay. Furthermore, according to the actual drainage conditions and opening and closing requirements, the lifting switch 42 can also be timed to lift and lower by controlling the magnitude of the first and second flow velocities.

[0041] like Figure 3-5As shown, as a preferred implementation of this application, the first flow velocity V1 being greater than the second flow velocity V2 can be achieved through a one-way valve structure. The one-way valve structure includes a valve core F1 and a valve housing F2. The valve core F1 is located inside the valve housing F2 and can move axially relative to the valve housing F2. A valve core hole F3 is also provided inside the valve core F1 and the valve housing F2. The diameter of the valve core hole F3 is smaller than the axial gap between the valve core F1 and the valve housing F2. In this embodiment, the first flow channel includes a valve core hole F3, and the second flow channel includes the axial clearance between the valve core F1 and the valve housing F2. The flow area of ​​the first flow channel is smaller than that of the second flow channel. The first flow channel remains open at all times, while the second flow channel opens selectively according to the flow direction of the working medium. When the one-way valve structure is opened, the first flow channel and the second flow channel are opened simultaneously, and the working medium can flow from the second cavity 3 to the first cavity 2 through the axial gap between the valve core F1 and the valve shell F2 and the valve core hole F3 at the same time. When the one-way valve structure is closed, the first flow channel is open and the second flow channel is closed, and the working medium can only flow from the second cavity 3 to the first cavity 2 through the valve core hole F3; It is worth noting that the flow area of ​​the first channel is often set to be much smaller than that of the second channel in practical applications, so that when the one-way valve structure is opened, the first flow velocity can be much greater than the second flow velocity.

[0042] The one-way valve structure is installed in the medium flow channel 5. When the working medium flows from the second cavity 3 to the first cavity 2, the one-way valve structure opens, and the valve core F1 extends axially from the inside of the valve shell F2. The working medium can then flow from the second cavity 3 to the first cavity 2 through the axial gap between the valve core F1 and the valve shell F2 at a relatively large first flow velocity V1. Conversely, when the working medium flows from the first cavity 2 to the second cavity 3, the one-way valve structure closes, and the valve core F1 retracts axially into the inside of the valve shell F2. The working medium can only flow from the first cavity 2 to the second cavity 3 through the valve core hole F3 at a relatively small second flow velocity V2. It is worth noting that the valve core hole F3 can achieve the flow effect whether the one-way valve structure is open or closed. However, when the one-way valve structure is open, since the diameter of the valve core hole F3 is smaller than the axial gap between the valve core F1 and the valve body F2, the flow area of ​​the working medium passing through the axial gap between the valve core F1 and the valve body F2 will be much larger than the flow area passing through the valve core hole F3.

[0043] Those skilled in the art should know that the above implementation is only a preferred embodiment, and those skilled in the art can also use other unidirectional or bidirectional velocity methods to achieve the above bidirectional velocity flow process.

[0044] like Figure 1As shown, as a further preferred embodiment, the upper parts of the first cavity 2 and the second cavity 3 are connected by the medium air passage 7, so that the working medium can flow smoothly between the first cavity 2 and the second cavity 3. The highest point of the liquid level of the working medium inside the first cavity 2 and the second cavity 3 is lower than the location of the medium air passage, so as to ensure that the working medium only flows between the first cavity 2 and the second cavity 3 through the medium flow channel 5, and does not enter the top medium air passage 7.

[0045] The working process of this embodiment is as follows: Initially, such as Figure 2 As shown, no working fluid enters the interior of housing 1 at this time, and the second chamber 3 falls to the lower inner side of housing 1; During rainfall, such as Figure 3 As shown, at this time, working fluid enters the interior of the housing 1 from the inlet. The second chamber 3 gradually floats up under the buoyancy of the working fluid. The second chamber 3 gradually rises and becomes higher than the first chamber 2. At this time, the working medium inside the second chamber 3 will flow from the second chamber 3 to the first chamber 2 at the first flow rate V1. However, at this time, the working medium entering the first chamber 2 is not enough to make the float 41 rise and drive the lifting switch 42 to rise. At this time, the transmission mechanism 4 is still kept in a low position. Then, as Figure 4 As shown, at this time, as the working medium inside the second cavity 3 continues to flow from the second cavity 3 to the first cavity 2 at the first flow rate V1, the working medium entering the first cavity 2 is sufficient to make the float 41 rise synchronously and eventually drive the lifting switch 42 to rise to the high position. After the rain stopped, as Figure 5 As shown, at this time, the working fluid stops entering the housing 1, and the second chamber 3 descends synchronously with the working fluid inside the housing 1, and gradually descends to a level lower than the first chamber 2. At this time, the working medium inside the first chamber 2 will flow from the first chamber 2 to the second chamber 3 at a second flow rate V2. The liquid level of the working medium in the first chamber 2 gradually decreases but does not reach the preset liquid level. At this time, the transmission mechanism 4 is still kept in a high position. When the working medium level inside the first chamber 2 gradually decreases to the preset level, the buoyancy disappears, and the transmission mechanism 4 falls to the initial low position under the action of gravity.

[0046] Preferably, a corresponding valve can be provided at the rear end of the transmission mechanism 4 so that the transmission mechanism 4 can drive the opening and closing of the corresponding valve.

[0047] Since the first flow velocity V1 is greater than the second flow velocity V2, the lifting switch 42 can be rapidly raised and delayed in descent. Furthermore, by adjusting various parameters of the transmission mechanism, parameters of the first and second cavities, parameters of the medium flow channel, and relevant performance parameters of the working medium, the valve's working state (such as opening and closing the valve) can be changed through the lifting of the transmission mechanism, ensuring accurate valve opening and closing and allowing for corresponding adjustments as required.

[0048] [Second Embodiment] The second embodiment of the present invention provides a non-powered timing method, comprising the following steps: 1) Determine the start and end points of timing: The working medium begins to enter the second cavity from the first cavity at the second flow rate, which is taken as the starting point of timing; the transmission mechanism is moved to a preset position, which is taken as the ending point of timing. In this embodiment, the timing duration between the starting point and the ending point can be adjusted in the following ways, for example: by adjusting the shape, size, and other parameters of the shell, the first cavity, and the second cavity; by adjusting the orifice diameter, length, slope, and other parameters of the medium flow channel; by adjusting the position of the hinge point; by adjusting the position, shape, mass, and other parameters of the transmission mechanism; by changing the relevant performance parameters of the working medium, so as to realize the timing of valve opening and closing through the rotational movement of the transmission mechanism, ensuring accurate valve opening and closing and allowing for corresponding adjustments as required. 2) Initially, the second cavity is lower than the height of the first cavity, the working medium is concentrated inside the second cavity, and the first cavity is in contact with the transmission mechanism to keep the transmission mechanism in its current position; 3) When the amount of working fluid entering the shell is greater than the shell's drainage capacity, the liquid level inside the shell rises. The second cavity is first subjected to buoyancy and rotates around the hinge point in the first direction (clockwise in this embodiment, the same below), making the second cavity higher than the first cavity. The working medium flows from the second cavity to the first cavity at the first flow rate. The resistance of the first cavity to the transmission mechanism disappears, and the transmission mechanism falls freely. 4) When the working fluid no longer enters the shell and the working fluid inside the shell is drained, the first cavity falls back in the second direction (counterclockwise in this embodiment, the same below) around the hinge point under the action of gravity. Since the working medium is concentrated inside the first cavity at this time, the front end of the first cavity will not touch the transmission mechanism, and the transmission mechanism remains in a free hanging state at this time. 5) Since the working medium level in the second cavity is lower than that in the first cavity, the working medium flows from the first cavity to the second cavity at a second flow rate. As the working medium gradually enters the second cavity, the second cavity rotates around the hinge point in the second direction due to its own gravity. The resistance of the first cavity to the transmission mechanism is restored, and the transmission mechanism is lifted and returns to its initial position.

[0049] like Figure 6-12 The diagram shows a non-powered timing device according to a second embodiment of the present invention, comprising a housing 1. A working fluid can enter the housing 1 through an upper inlet and exit the housing 1 through a lower outlet. Inside the housing 1, a first cavity 2, a second cavity 3, and a transmission mechanism 4 are movably connected. In this embodiment, the first cavity 2 and the second cavity 3 are configured as an integral structure (preferably an L-shaped integral structure as shown in the figure) and hinged to the upper inner side of the housing 1. This configuration allows the first cavity 2 and the second cavity 3 to be driven by the buoyancy of the working fluid entering the housing 1, and also to move relative to the housing 1 through the flow of the internal working medium.

[0050] like Figure 6 As shown, in this embodiment, the first cavity 2 and the second cavity 3 are filled with a working medium. The first cavity 2 and the second cavity 3 can move relative to the housing 1 under the drive of the working medium and the working liquid, thereby driving the transmission mechanism 4 to achieve rotation. That is, in this embodiment, the transmission mechanism 4 relies on the thrust to achieve its own rotation around the hinge point. Specifically, in this embodiment, the transmission mechanism 4 is hinged to the upper inner side of the housing 1 and is located close to the second cavity 3. A trigger switch 21 is also provided on the side of the first cavity 2 close to the transmission mechanism 4. The initial state of the trigger switch 21 is close to the transmission mechanism 4 to keep the transmission mechanism 4 in the current position. A limit part 8 is also provided on the top of the second cavity 3 to ensure the limit of the movement of the second cavity 3.

[0051] As an inventive point of this embodiment, the first cavity 2 and the second cavity 3 are connected by a medium flow channel 5, which allows the working medium to flow from the second cavity 3 to the first cavity 2 at a first flow rate and from the first cavity 2 to the second cavity 3 at a second flow rate, and the first flow rate is greater than the second flow rate.

[0052] like Figure 6 As shown, as a preferred implementation of this embodiment, the specific structure of the medium flow channel 5 can be set as follows: the medium flow channel 5 includes a baffle 51 fixed between the first cavity 2 and the second cavity 3, and a first flow channel 52 and a second flow channel 53 located at both ends of the baffle, so that the working medium can flow from the second cavity 3 through the first flow channel 52 to the first cavity 2 at a first flow rate, and flow from the first cavity 2 through the second flow channel 53 to the second cavity 3 at a second flow rate.

[0053] Specific settings are as follows: Figure 6As shown, the baffle 51 is inclined toward the first cavity 2, and a first flow channel 52 is formed between the end of the baffle 51 and the top wall of the first cavity 2 and the second cavity 3. A second flow channel 53 is provided at the bottom of the baffle 51, and the flow area of ​​the first flow channel 52 is larger than the flow area of ​​the second flow channel 53. This allows the working medium to flow from the second cavity 3 to the first cavity 2 through the first flow channel 52 at a larger first flow velocity, and from the first cavity 2 to the second cavity 3 through the second flow channel 53 at a smaller second flow velocity.

[0054] This configuration ensures that when working fluid enters the housing 1 through the inlet, the liquid level inside the housing 1 rises. The second cavity 3 is initially subjected to buoyancy and rotates around the hinge point in the first direction, making the second cavity 3 higher than the first cavity 2. The working medium flows from the second cavity 3 to the first cavity 2 at the first flow rate. The resistance of the first cavity 2 to the transmission mechanism 4 disappears, and the transmission mechanism 3 falls freely. When no more working fluid enters the housing 1 and the working fluid inside the housing 1 is drained, the first cavity 2 is subjected to gravity and rotates around the hinge point in the second direction. As the working medium is concentrated inside the first cavity 2, the front end of the first cavity 2 will not touch the transmission mechanism, and the transmission mechanism remains in a free and suspended state. Since the liquid level of the working medium inside the second cavity 3 is lower than that inside the first cavity 2, the working medium flows from the first cavity 2 to the second cavity 3 at a second flow rate. As the working medium gradually enters the second cavity 3, the second cavity 3 rotates around the hinge point in the second direction due to its own gravity. The resistance of the first cavity 2 to the transmission mechanism is restored, and the transmission mechanism is lifted and returns to its initial position.

[0055] Since the first flow velocity V1 is greater than the second flow velocity V2, the transmission mechanism 4 can achieve rapid descent and delayed ascent. Furthermore, according to actual needs, the shape and size of the shell, the first cavity, and the second cavity can be adjusted; the orifice diameter, length, and slope of the medium flow channel can be adjusted; the position of the hinge point can be adjusted; the position, shape, and mass of the transmission mechanism can be adjusted; and the relevant performance parameters of the working medium can be changed, so as to change the working state of the valve (such as opening and closing the valve) through the rotational movement of the transmission mechanism, ensuring accurate valve opening and closing and allowing for corresponding adjustments as required.

[0056] In specific work: Initially, such as Figure 7 As shown, no working fluid enters the interior of housing 1 at this time, and the first chamber 2 and the second chamber are located as follows: Figure 7 As shown, the second cavity 3 is lower than the height of the first cavity 2, and the front end of the second cavity 2 remains in contact with the transmission mechanism 4, thereby keeping the transmission mechanism 4 in its current position; During rainfall, such as Figure 8As shown, at this time, working fluid enters the interior of the housing 1 from the inlet. The second cavity 3 is first subjected to buoyancy and rotates around the hinge point in the first direction, so that the second cavity 3 is higher than the first cavity 2. The working medium flows from the second cavity 3 to the first cavity 2 at the first flow rate. The resistance of the first cavity 2 to the transmission mechanism 4 disappears, and the transmission mechanism 3 falls freely. After the rain stopped, as Figure 9 As shown, at this time, the working fluid stops entering the shell 1, and the buoyancy of the working fluid on the first cavity 2 and the second cavity 3 disappears. At this time, the working medium is concentrated in the first cavity 2 and gradually flows from the first cavity 2 to the second cavity 3 at the second flow rate V2. Then, as Figure 10 As shown, as the working medium gradually flows from the first cavity 2 to the second cavity 3 at a second flow rate V2, the working medium inside the first cavity 2 gradually decreases, while the working medium inside the second cavity 3 gradually increases. The second cavity 3 rotates in the second direction around the hinge point due to its own gravity. like Figure 11 As shown, as the second cavity 3 gradually rotates around the hinge point in the second direction, the liquid level of the working medium inside the first cavity 2 drops, making the first cavity 2 lighter and rotating around the hinge point in the second direction. This also restores the driving force of the trigger switch 21 against the transmission mechanism 4, causing the transmission mechanism to lift up. Finally, driven by the first cavity 2 and the second cavity 3, the transmission mechanism 4 rotates to the initial position in the second direction.

[0057] Since the first flow velocity V1 is greater than the second flow velocity V2, the transmission mechanism 4 can be opened quickly and closed with a delay. Furthermore, according to actual opening and closing needs, parameters such as the shape and size of the shell, the first cavity, and the second cavity can be adjusted; parameters such as the orifice diameter, length, and slope of the medium flow channel can be adjusted; the position of the hinge point can be adjusted; parameters such as the position, shape, and mass of the transmission mechanism can be adjusted; and relevant performance parameters of the working medium can be changed. Through the rotational movement of the transmission mechanism, the working state of the valve (such as opening and closing the valve) can be changed, ensuring accurate valve opening and closing and allowing for corresponding adjustments as required.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A non-powered timing method, characterized in that: Includes the following steps: 1) Determine the start and end points of the timing: The starting point for timing is when the working medium begins to enter the second cavity from the first cavity at the second flow rate; The transmission mechanism is lowered to the preset liquid level, which serves as the end point of the timing. 2) Initially, the first cavity is fixed below the shell, and the second cavity falls below the shell and is lower than the height of the first cavity; 3) When the amount of working fluid entering the shell is greater than the shell's drainage capacity, the liquid level inside the shell rises, the second chamber floats upward and becomes higher than the first chamber, and the working medium flows from the second chamber to the first chamber at the first flow rate. The liquid level of the working medium inside the first chamber rises and is driven to rise to a high position by the buoyancy drive transmission mechanism. 4) When the working fluid no longer enters the housing and the working fluid inside the housing is drained, the second chamber falls to the bottom of the housing by its own gravity and is lower than the height of the first chamber. The working medium flows from the first chamber to the second chamber at the second flow rate. The liquid level of the working medium in the first chamber gradually decreases but does not reach the preset liquid level. At this time, the transmission mechanism is still kept in a high position. 5) When the working medium level inside the first chamber gradually decreases to the preset level, the buoyancy disappears, and the transmission mechanism falls to the initial low position under the action of gravity.

2. A non-powered timing device using the method of claim 1, comprising a housing (1), wherein a working fluid can enter the housing (1) through an upper inlet and exit from the housing (1) through a lower outlet; a first cavity (2) fixed inside the housing (1) and a second cavity (3) capable of moving up and down synchronously with the working fluid inside the housing (1) are provided inside the housing (1), wherein the first cavity (2) and the second cavity (3) are both closed cavities and are filled with a working medium, wherein the working medium can drive the transmission mechanism (4) inside the first cavity (2) to move up and down, characterized in that: The first cavity (2) and the second cavity (3) are connected by a medium flow channel (5), and a one-way valve structure is provided inside the medium flow channel (5); When the working medium flows from the second cavity (3) to the first cavity (2), the one-way valve structure enables the working medium to flow from the second cavity (3) to the first cavity (2) at the first flow rate through the first flow channel and the second flow channel simultaneously. When the working medium flows from the first cavity (2) to the second cavity (3), the one-way valve structure allows the working medium to flow from the first cavity (2) to the second cavity (3) at a second flow rate through only the first flow channel; and satisfies: The first flow velocity is greater than the second flow velocity; The flow area of ​​the first channel is smaller than that of the second channel.

3. The non-powered timing device according to claim 2, characterized in that: The first cavity (2) is fixedly supported below the shell (1) by the lower support column (62), and the upper support column (61) inside the first cavity (2) is connected to the lower support column (62); The second cavity (3) is set inside the housing (1) via a track, and can move up and down synchronously with the working fluid under the limiting action of the track to adjust its height relative to the first cavity (2).

4. The non-powered timing device according to claim 3, characterized in that: The transmission mechanism (4) includes a float (41) and a lifting switch (42). The float (41) is sleeved on the outer periphery of the upper support column (61) and can move up and down synchronously with the working medium. The lifting switch (42) is located inside the upper support column (61) and is set on the top of the float (41) to move up and down synchronously with the float (41).

5. A non-powered timing device according to claim 2, characterized in that: The upper parts of the first cavity (2) and the second cavity (3) are connected by a medium air passage (7), and the highest point of the working medium inside the first cavity (2) and the second cavity (3) is lower than the location of the medium air passage.

6. A non-powered timing method, characterized in that: Includes the following steps: 1) Determine the start and end points of the timing: The starting point for timing is when the working medium begins to enter the second cavity from the first cavity at the second flow rate; Move the transmission mechanism to the preset position as the timing endpoint; 2) Initially, the second cavity is lower than the height of the first cavity, the working medium is concentrated inside the second cavity, and the first cavity is in contact with the transmission mechanism; 3) When the amount of working fluid entering the shell is greater than the shell's drainage capacity, the liquid level inside the shell rises. The second chamber is first subjected to buoyancy and rotates around the hinge point in the first direction, making the second chamber higher than the first chamber. The working medium flows from the second chamber to the first chamber at the first flow rate. The resistance of the first chamber to the transmission mechanism disappears, and the transmission mechanism falls freely. 4) When the working fluid no longer enters the housing and the working fluid inside the housing is drained, the second chamber falls back in the second direction around the hinge point due to gravity. Since the working medium is concentrated inside the first chamber at this time, the front end of the first chamber will not touch the transmission mechanism, and the transmission mechanism remains in a free hanging state at this time. 5) Since the working medium level in the second cavity is lower than the working medium level in the first cavity, the working medium flows from the first cavity to the second cavity at the second flow rate. As the working medium gradually enters the second cavity, the second cavity rotates in the second direction around the hinge point due to its own gravity. The resistance of the first cavity to the transmission mechanism is restored until the transmission mechanism is moved to the preset position and the transmission mechanism is lifted to the initial position.

7. A non-powered timing device employing the method of claim 6, comprising a housing (1), wherein a working fluid is allowed to enter the housing (1) through an upper inlet and exit from the housing (1) through a lower outlet; a first cavity (2), a second cavity (3), and a transmission mechanism (4) are movably connected to the housing (1) within the housing (1), wherein the first cavity (2) and the second cavity (3) are integrally formed and hinged to the upper inner side of the housing (1); the first cavity (2) and the second cavity (3) are filled with a working medium, and the first cavity (2) and the second cavity (3) are able to move relative to the housing (1) under the drive of the working medium and the working fluid, thereby driving the transmission mechanism (4) to achieve a rotational action, characterized in that: The first cavity (2) and the second cavity (3) are connected by a medium flow channel (5), which allows the working medium to flow from the second cavity (3) to the first cavity (2) at a first flow rate and from the first cavity (2) to the second cavity (3) at a second flow rate, and the first flow rate is greater than the second flow rate.

8. A non-powered timing device according to claim 7, characterized in that: The transmission mechanism (4) is hinged to the upper inner side of the housing (1).

9. A non-powered timing device according to claim 7, characterized in that: A trigger switch (21) is provided on the side of the first cavity (2) near the transmission mechanism (4), and a limit part (8) is provided on the top of the second cavity (3).

10. A non-powered timing device according to claim 7, characterized in that: The medium flow channel (5) includes a baffle (51), and a first flow channel (52) is formed between the end of the baffle (51) and the top wall of the first cavity (2) and the second cavity (3). A second flow channel (53) is opened at the bottom of the baffle (51), and the flow area of ​​the first flow channel (52) is greater than the flow area of ​​the second flow channel (53).

Images