A passive self-control autonomous early warning type water meter and a method for using the same

Abstract

The present application belongs to the technical field of water meter, and particularly relates to a passive self-control autonomous early warning type water meter. The quantitative assembly comprises a transmission assembly, a limiting rotating shaft, a quantitative spring, a positioning wheel assembly and a closing plate assembly. The positioning wheel assembly is provided with a closing plate cutout on a circumference. The closing plate assembly comprises a closed state and an open state, and comprises a positioning clamping block which is used in cooperation with the closing plate cutout. The output end of the transmission assembly is connected with the limiting rotating shaft through a transmission structure. The transmission structure can make the transmission assembly become a power source for the water revolving of the limiting rotating shaft. The positioning wheel assembly is fixed on the limiting rotating shaft. The positioning wheel assembly comprises a transition structure which is used for smoothly transitioning the positioning clamping block from the closing plate cutout to the outer circumference of the positioning wheel assembly. The present application can smoothly transition the positioning clamping block from the closing plate cutout to the outer circumference of the positioning wheel assembly without using other mechanisms, can prevent the positioning clamping block from being damaged, and has a protection effect on the positioning clamping block.

Description

Technical Field

[0001] This invention belongs to the field of water meter technology, and in particular relates to a self-controlled, autonomous early warning water meter. Background Technology

[0002] According to GB / T50331-2002 "Standards for Domestic Water Use by Urban Residents," a one-meter-per-household system is implemented, which brings difficulties to water supply departments in meter reading and billing. To solve these problems, it is necessary to implement quantitative control of liquid consumption. Currently, an electromagnetic quantitative control device is used on the market, but because this device requires a power source, it will stop working when the power is unavailable, causing inconvenience to daily liquid use. In addition, there are other interference problems.

[0003] In the invention patent ZL200420087258.1, entitled "A Liquid Flow Quantitative Control Device," a mechanical liquid flow quantitative control device is provided. This device achieves quantitative control of liquid flow. However, this technology also has shortcomings. When the predetermined quantitative liquid metering scale is reached, the device will suddenly shut off without prior notice to the user, causing inconvenience. Therefore, water meters with early warning capabilities have been developed. In another invention patent CN101294632B, a liquid flow quantitative control device is provided. The device has a large shut-off plate and a small shut-off plate. When the large shut-off plate is closed, its small hole can still allow a certain flow rate. When the user notices a significant decrease in flow rate, they will receive a warning that the device is about to shut off, thus achieving an early warning function. When the water supply continues at a small flow rate and the predetermined liquid metering scale is reached, the small shut-off plate will close the small hole on the large shut-off plate, stopping the water supply.

[0004] However, when the above liquid flow metering control device needs to be tightened again after the shut-off plate is closed, it is necessary to operate another pressure rod to make the shut-off plate and the positioning clip on the small shut-off plate press against the outer circle of the positioning wheel to open the shut-off plate, which is relatively troublesome to operate. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned technical problems by providing a self-controlled, autonomous early warning water meter that achieves the effect of smoothly transitioning the positioning block from the closed plate cut to the outer periphery of the positioning wheel assembly without the need for additional mechanisms, thus preventing damage to the positioning block and protecting it.

[0006] In view of this, the present invention provides a self-controlled, autonomous early warning water meter, including a housing, a counting component and a metering component disposed within the housing, the metering component including a metering seat, on which are disposed:

[0007] The transmission assembly, wherein the power input source of the transmission assembly is a counting component inside the housing;

[0008] The limiting rotating shaft passes through the metering seat and can rotate circumferentially around its own axis. The rotation process of the limiting rotating shaft includes two working states: tightening rotation and water supply rotation. The rotation direction of the limiting rotating shaft is opposite when tightening rotation and water supply rotation are in the same direction.

[0009] A metering spring, wherein the metering spring always has a tendency to rotate in the direction of rotation that causes the limiting rotor to rotate back to the water supply direction;

[0010] The positioning wheel assembly has a closed plate cutout on its circumference;

[0011] The closing plate assembly is rotatably mounted on the housing, which has a water outlet. The closing plate assembly is used to close or open the water outlet. The closing plate assembly includes a closed state and an open state. The closing plate assembly includes a positioning block that works in conjunction with the closing plate cutout. In the open state, the positioning block abuts against the outer periphery of the positioning wheel assembly. In the closed state, the positioning block is confined within the closing plate cutout.

[0012] The output end of the transmission component is connected to the limiting shaft through a transmission structure. The transmission structure enables the transmission component to become the power source for the water supply rotation of the limiting shaft. The positioning wheel assembly is fixed on the limiting shaft. The positioning wheel assembly includes a transition structure, which is used to smoothly transition the positioning block from the closed plate cut to the outer periphery of the positioning wheel assembly.

[0013] In this technical solution, when setting the liquid supply quantity, the external analog metering device rotates the limiting shaft clockwise, causing the positioning wheel assembly to rotate. The transition structure allows the positioning block to smoothly transition from the closed plate cut to the outer periphery of the positioning wheel assembly, opening the water outlet and tightening the metering spring. When water supply begins, the counting component drives the transmission component to rotate, causing the limiting shaft to rotate counterclockwise through the transmission structure until the closed plate cut rotates to the positioning block, limiting the positioning block within the closed plate cut. Then, the closing plate assembly rotates to the closed state, stopping the water outlet from discharging, thus achieving quantitative water supply. The transition structure eliminates the need for other mechanisms to allow the positioning block to smoothly transition from the closed plate cut to the outer periphery of the positioning wheel assembly, preventing damage to the positioning block and protecting it.

[0014] Furthermore, the positioning wheel assembly includes:

[0015] The inner disk is fixedly connected to the limiting rotating shaft. The inner disk includes a transition arc segment that sinks inward from the outer periphery of the inner disk, and a protrusion is provided on one side of the inner disk.

[0016] The outer plate has a closed plate cutout on its outer periphery that is recessed toward the center of the outer plate. The bottom of the outer plate is provided with a sliding groove that is arc-shaped and concentric with the outer plate.

[0017] Among them, the protrusion is slidably set in the groove, the outer circumference of the outer disk is surrounded on the outer circumference of the inner disk, and the circumferential rotational connection between the inner disk and the outer disk can make the transition arc segment and the closed plate cut opposite or staggered.

[0018] The aforementioned transition structure includes the inner and outer discs, and also includes a return spring. The return spring is disposed in the slide groove. When the transition arc segment and the closed plate cutout are opposite each other, one end of the protrusion is in contact with the end wall of the slide groove. The return spring always has a tendency to keep the protrusion in contact with the end wall of the slide groove.

[0019] In this technical solution, when the normal water supply outlet is open, the transition arc segment and the closed plate cut are opposite each other. When the transition arc segment and the closed plate cut are opposite each other, the end point of the transition arc segment is in contact with the outer plate wall and away from the closed plate cut. The inner and outer plates rotate counterclockwise synchronously with the limiting shaft. When the outlet is closed, the transition arc segment and the closed plate cut are also opposite each other. Only when the outlet is gradually opened, that is, when the positioning block smoothly transitions from the closed plate cut to the outer circumference of the positioning wheel assembly, the transition arc segment and the closed plate cut will gradually be misaligned in the circumferential direction. This is because at this time the limiting shaft rotates clockwise to set the liquid supply quantity, and the positioning wheel assembly will also rotate clockwise synchronously. However, the positioning block is inside the closed plate cut, so there will be a force that prevents the positioning wheel assembly from rotating clockwise. The inner plate is fixed to the limiting shaft. The connection will continue to rotate clockwise, but the transition arc segment will press the positioning block to gradually open the outlet of the closing plate assembly. At the same time, the outer plate is slidably connected to the inner plate through the protrusion and the slide groove. Therefore, when the outer plate is resisted by the positioning block, it will rotate relative to the inner plate, causing the transition arc segment and the closing plate cut to be misaligned. When the closing plate cut rotates to be flush with the end of the transition arc segment, the positioning block can smoothly switch from being inside the closing plate cut to being against the outer circumference of the outer plate. Then, the resistance of the positioning block to the outer plate disappears, and the return spring can reset the outer plate, so that the transition arc segment and the closing plate cut are aligned again. Since one end of the protrusion is in contact with the end wall of the slide groove, the outer plate and the inner plate only rotate relative to each other when the inner plate rotates clockwise. When water is supplied, that is, when the inner plate rotates counterclockwise, the outer plate and the inner plate always keep synchronous counterclockwise rotation. Compared to a single positioning wheel with an arc-shaped cam, this structure can quickly close the water outlet and smoothly open it, preventing damage to the positioning block and protecting it.

[0020] Furthermore, the closing plate assembly includes:

[0021] A large closing plate, wherein the large closing plate is provided with the aforementioned positioning block;

[0022] The small closing plate is also provided with the aforementioned positioning block;

[0023] The small shut-off plate is coaxially connected to the large shut-off plate, and the large shut-off plate is provided with a small water passage hole.

[0024] Further, the transmission component includes an input wheel set, a transition wheel set and a combined ratchet. The input wheel set meshes with the output gear in the counting component, the input wheel set meshes with the transition wheel set, the transition wheel set meshes with the combined ratchet, and the ratchet meshes with a closing gear coaxially connected. The transmission structure includes a rotating shaft gear, and the rotating shaft gear meshes with the closing gear.

[0025] Further, the rotating shaft gear is an incomplete gear. The angle formed by the connection line of the axis of the limiting rotating shaft at both ends of the toothless section of the rotating shaft gear is the first angle A. The angle formed by the connection line of the axis of the limiting rotating shaft at both ends of the cut of the closing plate is the second angle B. The angle formed by the connection line of the axis of the limiting rotating shaft at both ends of the large closing plate positioning block is the third angle C. The angle formed by the connection line of the axis of the limiting rotating shaft at both ends of the small closing plate positioning block is the third angle D. Among them, B + C < A < B + C + D. The quantitative spring is used to reset the limiting rotating shaft in the rotational direction of the water supply rotation;

[0026] Further, the combined ratchet includes a one-way internal and external gear and a three-pawl ratchet. The three-pawl ratchet is connected to the internal teeth of the one-way internal and external gear to form a combined ratchet.

[0027] In this technical solution, when setting the liquid supply quantity, the limiting rotating shaft is rotated clockwise through an external analog quantizer, so that the rotating shaft gear rotates and the toothed section of the rotating shaft gear resumes meshing with the closing gear. Due to the action of the combined ratchet, only the three-pawl ratchet rotates clockwise, and the rest of the transmission components do not rotate. The quantitative spring is also gradually tightened, and the closing plate component gradually opens the water outlet. After the liquid supply quantity is set, due to the meshing force between the closing gear and the rotating shaft gear and the meshing force of the transmission components, the quantitative spring will not rotate the limiting rotating shaft back. When starting to supply water, the counting component can rotate the input wheel set, and the axial rotation sequentially rotates the input wheel set, the transition wheel set, the combined ratchet, the closing gear and the rotating shaft gear to rotate the limiting rotating shaft counterclockwise. When the positioning block of the large closing plate is stuck into the cut of the closing plate, the large closing plate closes the water outlet, but there are still small water holes left on the large closing plate. Therefore, the water flow rate instantaneously becomes smaller, reminding the user that the water volume is about to be used up and should be recharged earlier. At this time, the positioning block of the small closing plate still abuts against the outer periphery of the outer disc. When the limiting rotating shaft continues to rotate clockwise, because B + C < A < B + C + D, before the positioning block of the small closing plate is stuck into the cut of the closing plate, the toothless section of the rotating shaft gear rotates to be opposite to the closing gear, that is, the rotating shaft gear loses meshing with the closing gear. At this time, the restoring force of the quantitative spring will instantaneously rotate the limiting rotating shaft counterclockwise quickly to reset, which will also make the positioning block of the small closing plate instantaneously fall into the cut of the closing plate, then the small closing plate covers the large closing plate, and at this time, no water comes out, that is, the water volume has been used up. The closing of the large closing plate is controlled according to the outer disc of the positioning wheel component, and the accuracy is not high. The closing of the small closing plate is controlled according to the gear parameters of the rotating shaft gear and the gear parameters of the transmission components, and has a very high accuracy for the control of the water volume, which can ensure the accuracy of the water meter quantification.

[0028] Furthermore, the metering spring is in the shape of a rotary spring, with one end connected to the limiting shaft and the other end connected to the housing.

[0029] Furthermore, a method for using a self-controlled, automatic early warning water meter includes the following steps:

[0030] Step S1: Set the liquid supply volume. Rotate the limiting shaft clockwise using an external analog metering device. During the clockwise rotation of the limiting shaft, the closing plate assembly is smoothly switched to the open state through the positioning wheel assembly and the transition structure, thus opening the water outlet.

[0031] Step S2, Water Supply Rotation: After water supply begins, the counting component drives the transmission component to rotate the limit shaft. The outer disk of the positioning wheel component controls the closing of the large shut-off plate. The large shut-off plate closes first, and the water flow rate decreases instantly, reminding the user that the water is about to run out. The gear parameters of the shaft gear and transmission component control the closing of the small shut-off plate. The small shut-off plate is closed by the rebound force of the metering spring. The small shut-off plate closes after the large shut-off plate. When the small shut-off plate closes, water supply stops.

[0032] The beneficial effects of this invention are:

[0033] 1. The transition structure allows the positioning block to smoothly transition from the closed plate cut to the outer periphery of the positioning wheel assembly without the need for other mechanisms. This prevents damage to the positioning block and protects it. Compared with a single positioning wheel with an arc and a cam shape, this structure can quickly close the water outlet and smoothly open it, thus preventing damage to the positioning block and protecting it.

[0034] 2. The closing of the large shut-off plate is controlled by the outer disc of the positioning wheel assembly, which is not very precise. The closing of the small shut-off plate is controlled by the gear parameters of the rotating shaft gear and the gear parameters of the transmission assembly, which has a high precision in controlling the water volume and can ensure the accuracy of the water meter's quantitative readings. Attached Figure Description

[0035] Figure 1 This is an overall diagram of the water meter;

[0036] Figure 2 This is an exploded view of the water meter;

[0037] Figure 3 It is a three-dimensional diagram of the quantitative component;

[0038] Figure 4 This is a partial cross-sectional view of the quantitative component;

[0039] Figure 5 This is a schematic diagram of the positioning wheel assembly and the closing plate assembly;

[0040] Figure 6 This is a 3D view of the positioning wheel assembly;

[0041] Figure 7 This is an exploded view of the positioning wheel assembly;

[0042] Figure 8 This is a 3D view of the inner disc of the positioning wheel assembly;

[0043] Figure 9 This is a 3D view of the outer disc of the positioning wheel assembly;

[0044] Figure 10 It is a 3D view showing the large closing plate closed while the small closing plate is not yet closed;

[0045] Figure 11 yes Figure 4 A magnified view of a portion of the image;

[0046] Figure 12 yes Figure 3 A partial top view of the structure.

[0047] The markings in the diagram are as follows:

[0048] 1. Housing; 2. Counting assembly; 3. Metering assembly; 4. Metering seat; 5. Transmission assembly; 6. Limiting shaft; 7. Metering spring; 8. Positioning wheel assembly; 9. Closing plate assembly; 10. Closing plate notch; 11. Water outlet; 12. Positioning block; 13. Inner disc; 14. Outer disc; 15. Transition arc segment; 16. Protrusion; 17. Slide groove; 18. Return spring; 19. Large closing plate; 20. Small closing plate; 21. Small water passage hole; 22. Input wheel assembly; 23. Transition wheel assembly; 24. Combined ratchet; 25. One-way internal and external gears; 27. Closing gear; 28. Shaft gear. Detailed Implementation

[0049] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0050] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0051] It should be noted that the terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and are not limited in number; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0052] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms 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, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0053] It should be noted that, in this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0054] Example 1:

[0055] like Figure 1-5 As shown, a self-controlled, autonomous early warning water meter includes a housing 1. A counting component 2 and a metering component 3 are installed inside the housing 1. The metering component 3 includes a metering seat 4, on which a transmission component 5, a limiting shaft 6, a metering spring 7, a positioning wheel assembly 8, and a closing plate assembly 9 are mounted. The power input source for the transmission component 5 is the counting component 2 inside the housing 1. The limiting shaft 6 passes through the metering seat 4 and can rotate circumferentially around its own axis. The rotation of the limiting shaft 6 includes two working states: tightening rotation and water supply rotation. The rotation directions of the limiting shaft 6 are opposite during tightening rotation and water supply rotation. The metering spring 7 is helical in shape, with one end connected to the limiting shaft 6 and the other end connected to the housing 1. The metering spring 7 always has a tendency to rotate the limiting shaft 6 in the direction of water supply rotation. A closing plate cutout 10 is provided on the circumference of the positioning wheel assembly 8. The closing plate assembly 9 is rotatably mounted on the housing 1, which has a water outlet 11. The closing plate assembly 9 is used to close the water outlet. Alternatively, the outlet 11 can be opened. The closing plate assembly 9 includes a closed state and an open state. The closing plate assembly 9 includes a positioning block 12, which works in conjunction with the closing plate cutout 10. In the open state, the positioning block 12 abuts against the outer periphery of the positioning wheel assembly 8. In the closed state, the positioning block 12 is confined within the closing plate cutout 10. The output end of the transmission assembly 5 is connected to the limiting rotating shaft 6 through a transmission structure. The transmission structure enables the transmission assembly 5 to become the power source for the water supply rotation of the limiting rotating shaft 6. The positioning wheel assembly 8 is fixed on the limiting rotating shaft 6. The positioning wheel assembly 8 includes a transition structure. The transition structure is used to smoothly transition the positioning block 12 from the closing plate cutout 10 to the outer periphery of the positioning wheel assembly 8.

[0056] When setting the liquid supply quantity, the external analog metering device rotates the limiting shaft 6 clockwise, causing the positioning wheel assembly 8 to rotate. The transition structure allows the positioning block 12 to smoothly transition from the closed plate cutout 10 to the outer periphery of the positioning wheel assembly 8, opening the outlet 11 and tightening the metering spring 7. When water supply begins, the counting component 2 drives the transmission component 5 to move, causing the limiting shaft 6 to rotate counterclockwise through the transmission structure until the closed plate cutout 10 rotates to the positioning block 12, limiting the positioning block 12 within the closed plate cutout 10. Then, the closing plate assembly 9 rotates to the closed state, stopping the water outlet 11 from discharging water, thus achieving quantitative water supply. The transition structure allows the positioning block 12 to smoothly transition from the closed plate cutout 10 to the outer periphery of the positioning wheel assembly 8 without the need for other mechanisms, preventing damage to the positioning block 12 and protecting it.

[0057] Example 2:

[0058] like Figure 5-9 As shown, the positioning wheel assembly 8 includes an inner disk 13 and an outer disk 14. The inner disk 13 is fixedly connected to the limiting shaft 6. The inner disk 13 includes a transition arc segment 15 that sinks inward from the outer periphery of the inner disk 13, and a protrusion 16 is provided on one side of the inner disk 13. The closed plate cutout 10 is opened on the outer periphery of the outer disk 14 and sinks towards the center of the outer disk 14. A sliding groove 17 is provided on the bottom of the outer disk 14. The sliding groove 17 is arc-shaped and concentric with the outer disk 14. The protrusion 16 is slidably disposed in the sliding groove 17, and the outer periphery of the outer disk 14 surrounds the inner disk 13. On the circumference, the inner disk 13 and the outer disk 14 are rotatably connected so that the transition arc segment 15 and the closed plate cutout 10 are opposite or staggered; the above transition structure includes the inner disk 13 and the outer disk 14, and also includes a return spring 18. The return spring 18 is set in the slide groove 17. When the transition arc segment 15 and the closed plate cutout 10 are opposite, one end of the protrusion 16 is in contact with the end wall of the slide groove 17. The return spring 18 always has the tendency to make the protrusion 16 contact the end wall of the slide groove 17.

[0059] When the normal water supply outlet 11 is opened, the transition arc section 15 and the closed plate cut 10 are opposite each other. When the transition arc section 15 and the closed plate cut 10 are opposite each other, the end point of the transition arc section 15 is in contact with the wall of the outer plate 14 and away from the closed plate cut 10. The inner plate 13 and the outer plate 14 rotate counterclockwise synchronously with the limit rotating shaft 6. When the outlet 11 is closed, the transition arc section 15 and the closed plate cut 10 are also opposite each other. Only when the outlet 11 is gradually opened, i.e., the positioning block... During the smooth transition from the closed plate cut 10 to the outer periphery of the positioning wheel assembly 8, the transition arc segment 15 and the closed plate cut 10 will gradually shift in the circumferential direction. This is because the limiting shaft 6 rotates clockwise to set the liquid supply metering, and the positioning wheel assembly 8 will also rotate clockwise synchronously. However, the positioning block 12 is inside the closed plate cut 10, so there will be a force that prevents the positioning wheel assembly 8 from rotating clockwise. The inner plate 13, because it is fixedly connected to the limiting shaft 6, will continue to rotate clockwise. The movement involves the transition arc segment 15 pressing against the positioning block 12, causing the closing plate assembly 9 to gradually open the outlet 11. Simultaneously, because the outer disc 14 is slidably connected to the inner disc 13 via the protrusion 16 and the groove 17, the outer disc 14 will rotate relative to the inner disc 13 when resisted by the positioning block 12. This causes the transition arc segment 15 and the closing plate cutout 10 to be misaligned. When the closing plate cutout 10 rotates to be flush with the end point of the transition arc segment 15, the positioning block 12 can smoothly move from the closing plate cutout 10... When the inner plate 14 is switched to rest against the outer circumference of the outer plate 14, the resistance of the positioning block 12 to the outer plate 14 disappears, and the return spring 18 can reset the outer plate 14 so that the transition arc segment 15 and the closing plate cutout 10 are aligned again. Since one end of the protrusion 16 is in contact with the end wall of the slide groove 17, the outer plate 14 and the inner plate 13 only rotate relative to each other when the inner plate 13 rotates clockwise. When water is supplied, that is, when the inner plate 13 rotates counterclockwise, the outer plate 14 and the inner plate 13 always maintain synchronous counterclockwise rotation. Compared with a single positioning wheel with an arc and a cam shape, this structure can quickly close the water outlet 11 and smoothly open the water outlet 11, and can prevent the positioning block 12 from being damaged, thus protecting the positioning block 12.

[0060] Example 3:

[0061] like Figure 4 and 10 As shown, the shut-off plate assembly 9 includes a large shut-off plate 19 and a small shut-off plate 20. The large shut-off plate 19 is provided with the aforementioned positioning block 12; the small shut-off plate 20 is also provided with the aforementioned positioning block 12; the small shut-off plate 20 is coaxially connected to the large shut-off plate 19, the large shut-off plate 19 is provided with a small water passage hole 21, and the shut-off plate assembly 9 also includes a spring, which ensures that the shut-off plate assembly 9 always has a tendency to cover the water outlet 11.

[0062] like Figure 4 and Figure 11 and Figure 12As shown, the transmission assembly 5 includes an input wheel set 22, a transition wheel set 23, and a combined ratchet 24. The combined ratchet 24 includes a one-way internal and external gear 25 and a three-jaw ratchet. The three-jaw ratchet is engaged with the internal teeth of the one-way internal and external gear 25 to form the combined ratchet 24. The structure of the combined ratchet 24 has been described in the patent number CN101294632A. The input wheel set 22 is engaged with the output gear in the counting assembly 2. The input wheel set 22 is engaged with the transition wheel set 23. The transition wheel set 23 is engaged with the combined ratchet 24. The ratchet engagement is coaxially connected to a closing gear 27. The transmission structure includes a rotating shaft gear 28, and the rotating shaft gear 28 is engaged with the closing gear 27.

[0063] As Figure 11-12 shown, the rotating shaft gear 28 is an incomplete gear. The angle formed by the connection line of the centers of the non-toothed segments at both ends of the rotating shaft gear 28 and the limiting rotating shaft 6 is the first angle A. The angle formed by the connection line of the centers of the limiting rotating shaft 6 and both ends of the closing plate notch 10 is the second angle B. The angle formed by the connection line of the centers of the limiting rotating shaft 6 and both ends of the positioning block 12 of the large closing plate 19 is the third angle C. The angle formed by the connection line of the centers of the limiting rotating shaft 6 and both ends of the positioning block 12 of the small closing plate 20 is the third angle D. Among them, B + C < A < B + C + D. The quantitative spring 7 is used to reset the limiting rotating shaft 6 in the rotational direction of the water supply rotation.

[0064] When performing the liquid supply quantitative setting, the limiting rotating shaft 6 is rotated clockwise through an external analog quantizer, so that the rotating shaft gear 28 rotates and the toothed segment of the rotating shaft gear 28 resumes engagement with the closing gear 27. Due to the action of the combined ratchet 24, only the three-jaw ratchet rotates clockwise, and the rest of the transmission assembly 5 does not rotate. The quantitative spring 7 is also gradually tightened, and the closing plate assembly 9 gradually opens the water outlet 11. After the liquid supply amount setting is completed, due to the meshing force between the closing gear 27 and the rotating shaft gear 28 and the meshing force of the transmission assembly 5, the quantitative spring 7 will not rotate the limiting rotating shaft 6 back. When starting the water supply, the counting assembly 2 can rotate the input wheel set 22, and the axial rotation sequentially rotates the limiting rotating shaft 6 counterclockwise through the input wheel set 22, the transition wheel set 23, the combined ratchet 24, the closing gear 27, and the rotating shaft gear 28. When the positioning block 12 of the large closing plate 19 is inserted into the closing plate notch 10, the large closing plate 19 closes the water outlet 11, as Figure 10As shown, there are still small water passing holes 21 left on the large closing plate 19. Therefore, the water flow rate decreases instantaneously, reminding the user that the water volume is about to be used up and that they should recharge earlier. At this time, the positioning block 12 of the small closing plate 20 still abuts against the outer circumference of the outer disc 14. When the limit rotating shaft 6 continues to rotate clockwise, since B + C < A < B + C + D, before the positioning block 12 of the small closing plate 20 is inserted into the closing plate notch 10, the toothless section of the rotating shaft gear 28 rotates to face the closing gear 27, that is, the rotating shaft gear 28 and the closing gear 27 lose engagement. At this time, the restoring force of the quantitative spring 7 will instantaneously drive the limit rotating shaft 6 to continue to rotate counterclockwise rapidly to reset, causing the positioning block 12 of the small closing plate 20 to also instantaneously fall into the closing plate notch 10. Then the small closing plate 20 covers the large closing plate, and at this time, no water flows out, that is, the water volume has been used up. The closing of the large closing plate 19 is controlled by the outer disc 14 of the positioning wheel assembly 8, with low precision. The closing of the small closing plate 20 is controlled according to the gear parameters of the rotating shaft gear 28 and the gear parameters of the transmission assembly 5, with high precision in water volume control, and can ensure the precision of water meter quantification.

[0065] A usage method of a self-powered self-controlled and self-warning water meter includes the following steps:

[0066] Step S1, set the liquid supply volume. Rotate the limit rotating shaft 6 clockwise through an external analog quantifier. During the clockwise rotation of the limit rotating shaft 6, the closing plate assembly 9 is smoothly switched to the open state through the positioning wheel assembly 8 and the transition structure to open the water outlet 11;

[0067] Step S2, water supply rotation. After the water supply starts, the counting component 2 drives the transmission component 5 to make the limit rotating shaft 6 rotate for water supply rotation. The outer disc 14 of the positioning wheel assembly 8 controls the closing of the large closing plate 19. The large closing plate 19 closes first, and the water flow rate decreases instantaneously, reminding the user that the water volume is about to be used up. The gear parameters of the rotating shaft gear 28 and the transmission component 5 control the closing of the small closing plate 20. The small closing plate 20 is driven to close by the restoring force of the quantitative spring 7. The small closing plate 20 closes after the large closing plate 19. When the small closing plate 20 closes, the water supply stops.

[0068] The embodiments of the present application have been described above in combination. Without conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are only illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection scope of the present application.

Claims

1. A self-controlled, autonomous early warning water meter, characterized in that... The device includes a housing (1), inside which a counting component (2) and a metering component (3) are provided. The metering component (3) includes a metering seat (4), on which are provided: The power input source of the transmission assembly (5) is the counting assembly (2) inside the housing (1). The limiting rotating shaft (6) passes through the metering seat (4) and can rotate around its own axis. The rotation process of the limiting rotating shaft (6) includes two working states: tightening rotation and water supply rotation. The rotation direction of the limiting rotating shaft (6) is opposite when tightening rotation and water supply rotation. A metering spring (7) always has a tendency to rotate the limiting shaft (6) in the direction of water supply rotation. Positioning wheel assembly (8), with a closed plate cutout (10) on the circumference of the positioning wheel assembly (8); The closing plate assembly (9) is rotatably mounted on the housing (1), and the housing (1) is provided with a water outlet (11). The closing plate assembly (9) is used to close or open the water outlet (11). The closing plate assembly (9) includes a closed state and an open state. The closing plate assembly (9) includes a positioning block (12). The positioning block (12) is used in conjunction with the closing plate cutout (10). In the open state, the positioning block (12) abuts against the outer periphery of the positioning wheel assembly (8). In the closed state, the positioning block (12) is confined within the closing plate cutout (10). The output end of the transmission component (5) is connected to the limiting shaft (6) through a transmission structure. The transmission structure enables the transmission component (5) to become the power source for the water supply rotation of the limiting shaft (6). The positioning wheel assembly (8) is fixed on the limiting shaft (6). The positioning wheel assembly (8) includes a transition structure. The transition structure is used to make the positioning block (12) smoothly transition from the closed plate cutout (10) to the outer periphery of the positioning wheel assembly (8). The transmission assembly (5) includes an input gear set (22), a transition gear set (23), and a combined ratchet (24). The input gear set (22) meshes with the output gear in the counting assembly (2). The input gear set (22) meshes with the transition gear set (23). The transition gear set (23) meshes with the combined ratchet (24). The ratchet meshes with a closing gear (27) connected coaxially. The transmission structure includes a rotating shaft gear (28), which meshes with the closing gear (27). The combined ratchet (24) includes a one-way internal and external gear (25) and a three-jaw ratchet. The three-jaw ratchet is connected to the internal teeth of the one-way internal and external gear (25) to form the combined ratchet (24).

2. The self-controlled, autonomous early warning water meter according to claim 1, characterized in that, The positioning wheel assembly (8) includes: The inner disk (13) is fixedly connected to the limiting rotating shaft (6). The inner disk (13) includes a transition arc segment (15) that sinks inward from the outer periphery of the inner disk (13). A protrusion (16) is provided on one side of the inner disk (13). An outer disc (14), the closing plate notch (10) is opened on the outer circumference of the above-mentioned outer disc (14) and sinks in the direction of the center of the outer disc (14). A chute (17) is provided at the bottom of the outer disc (14), and the chute (17) is arc-shaped and concentric with the outer disc (14); Among them, a convex block (16) is slidably arranged in the chute (17). The outer circumference of the outer disc (14) is annularly arranged on the outer circumference of the inner disc (13). The inner disc (13) is circumferentially rotatably connected to the outer disc (14) so that the transition arc segment (15) and the closing plate notch (10) can be opposite or错开; The above-mentioned transition structure includes the above-mentioned inner disc (13) and outer disc (14), and also includes a return spring (18). The return spring (18) is arranged in the chute (17). When the transition arc segment (15) and the closing plate notch (10) are opposite, one end of the convex block (16) abuts against the end wall of the chute (17), and the return spring (18) always has a movement tendency to make the convex block (16) abut against the end wall of the chute (17).

3. The self-controlled, autonomous early warning water meter according to claim 2, characterized in that, The closing plate assembly (9) includes: A large closing plate (19), and the above-mentioned positioning block (12) is arranged on the large closing plate (19); A small closing plate (20), and the above-mentioned positioning block (12) is also arranged on the small closing plate (20); Among them, the small closing plate (20) is coaxially connected to the large closing plate (19), and a small water hole (21) is provided on the large closing plate (19).

4. The self-controlled, autonomous early warning water meter according to claim 3, characterized in that, The rotating shaft gear (28) is an incomplete gear. The angle formed by the axis connection lines of the toothless segments at both ends of the rotating shaft gear (28) and the limiting rotating shaft (6) is the first angle A. The angle formed by the axis connection lines of both ends of the closing plate notch (10) and the limiting rotating shaft (6) is the second angle B. The angle formed by the axis connection lines of both ends of the positioning block (12) of the large closing plate (19) and the limiting rotating shaft (6) is the third angle C. The angle formed by the axis connection lines of both ends of the positioning block (12) of the small closing plate (20) and the limiting rotating shaft (6) is the third angle D. Among them, B + C < A < B + C + D. The metering spring (7) is used to reset the limiting rotating shaft (6) in the rotation direction of the water supply rotation.

5. A self-controlled, autonomous early warning water meter according to claim 4, characterized in that, The metering spring (7) is in a spiral shape. One end of the metering spring (7) is connected to the limiting rotating shaft (6), and the other end is connected to the machine shell (1).

6. A self-controlled, autonomous early warning water meter according to claim 5, characterized in that, The usage method includes the following steps: Step S1, setting the liquid supply amount: Rotate the limiting rotating shaft (6) clockwise through an external analog metering device. During the clockwise rotation of the limiting rotating shaft (6), the closing plate assembly (9) is smoothly switched to the open state through the positioning wheel assembly (8) and the transition structure to open the water outlet (11); Step S2, Water Supply Rotation: After water supply begins, the counting component (2) drives the transmission component (5) to make the limit rotating shaft (6) rotate for water supply. The outer disk (14) of the positioning wheel component (8) controls the closing of the large shut-off plate (19). The large shut-off plate (19) closes first, and the water flow rate decreases instantly, reminding the user that the water is about to run out. The gear parameters of the rotating shaft gear (28) and the transmission component (5) control the closing of the small shut-off plate (20). The small shut-off plate (20) is closed by the rebound force of the quantitative spring (7). The small shut-off plate (20) closes after the large shut-off plate (19). When the small shut-off plate (20) closes, water supply stops.

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