Anti-clogging freeze-proof water meter

Abstract

The application relates to the technical field of water meters, in particular to a kind of anti-clogging anti-freezing water meter, comprising a water meter box, one end of the water meter box is provided with a detachable first connecting pipe, and the end of the water meter box away from the first connecting pipe is provided with a detachable second connecting pipe. When cleaning is needed, the operator rotates the third sliding rod, moves the cleaning block on the side, makes it press tightly with the outer wall of the filter box, then rotates the rotating cylinder in the drainage structure, drives the second rotating ring fixedly connected with the second connecting rod to rotate, and drives the whole filter box to rotate. In this process, the stationary cleaning block continuously rubs with the rotating outer surface of the filter box, thereby scraping off the impurities attached around the filter hole. The removed impurities are finally discharged outside the meter under the water flow, greatly simplifying the maintenance process and ensuring the long-term smooth operation of the water meter.

Description

Technical Field

[0001] This invention relates to the field of water meter technology, and in particular to an anti-clogging, antifreeze water meter. Background Technology

[0002] In the harsh winter environment, traditional water meters face two major challenges: freezing and clogging. Low temperatures easily cause the water inside the meter to freeze, expanding and damaging the casing and precision mechanism. Simultaneously, impurities and scale in the pipes easily accumulate at the meter's filter screen, affecting the accuracy of water flow measurement and, in severe cases, causing complete blockage and interrupting water supply. Existing antifreeze water meters mostly rely on external measures such as insulation materials or electric heating, which are energy-intensive and cannot eliminate the underlying problems. Furthermore, when ordinary filters become clogged, the entire meter often needs to be disassembled for cleaning, a cumbersome process that disrupts normal water use. Additionally, small water flows are insufficient to drive the metering mechanism, leading to measurement errors. Therefore, we propose a clog-resistant antifreeze water meter. Summary of the Invention

[0003] To overcome the shortcomings of the prior art, the present invention provides an anti-clogging and antifreeze water meter.

[0004] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A water meter box is included, with a detachable first connecting pipe at one end and a detachable second connecting pipe at the end of the water meter box away from the first connecting pipe. A one-way valve is installed inside the second connecting pipe. A guide ring is movably installed inside the water meter box, with the first connecting ring movably installed above the guide ring and a filter box movably installed below the guide ring. Filter holes are equidistantly opened on the side of the filter box. A fixed drain box is installed inside the first connecting ring. A second movable cavity is opened inside the water meter box corresponding to the output port of the water meter box, and a movable sliding block is installed inside the second movable cavity. The guide ring has a third sliding groove on its side, and the water meter box has a fourth sliding groove on its bottom side corresponding to the third sliding groove. Two symmetrically distributed third sliding rods are movably installed inside the third and fourth sliding grooves. A detachable cleaning block is provided on the side of the third sliding rod. A constraint structure for pressing the first connecting ring is provided above the third sliding rod. The bottom side of the water meter box has an installation hole, and a flow-draining structure is provided inside the installation hole. The bottom side of the filter box has a support structure that is fixedly connected to the flow-draining structure. A rotating wheel is provided inside the flow-draining box. A water meter movement adapted to the rotating wheel is provided on the top of the inside of the water meter box.

[0005] As a preferred embodiment of the present invention, a first guide groove is provided on the inner side of the water meter box corresponding to the position of the second movable cavity. A first connecting block is fixedly installed on the side of the sliding block corresponding to the position of the first guide groove. The first connecting block is an "L"-shaped rod. The end of the first connecting block away from the sliding block is fixedly installed on the upper side of the first connecting ring. A first rotating ring is rotatably installed on the guide ring. A toothed ring is fixedly installed on the outer side of the first connecting ring. A rotating tooth is fixedly installed on the upper part of the first rotating ring corresponding to the position of the toothed ring. The rotating tooth and the toothed ring mesh with each other. The sliding block extends downward to the outer side of the water meter box.

[0006] As a preferred embodiment of the present invention, the one-way valve includes a fixed block installed inside the second connecting pipe. A second sliding groove is provided at the center of the fixed block. A second sliding rod is slidably installed inside the second sliding groove. A first blocking block is fixedly installed at one end of the second sliding rod. A second spring is fixedly installed at one end of the first blocking block and is fixedly connected to the side of the fixed block. A first fixing ring is fixedly installed on the inner side of the second connecting pipe corresponding to the side of the first blocking block. A first connecting rod is fixedly installed on the inner side of the second connecting pipe. A first sliding groove is provided on the side of the first connecting rod. A first sliding rod is fixedly installed on the side of the first blocking block corresponding to the position of the first sliding groove. One end of the first sliding rod extends into the interior of the first sliding groove.

[0007] As a preferred embodiment of the present invention, a limiting cavity is formed on the inner side of the second connecting pipe corresponding to the position of the first block. The limiting cavity has a triangular cross-section and is an annular cavity. Two first mounting cavities are formed on the side of the first block. A movable block is fixedly installed inside the first mounting cavity. A first spring is fixedly installed at one end of the movable block. The end of the first spring away from the movable block is fixedly installed on the side of the first mounting cavity. A locking block is fixedly installed on the side of the movable block corresponding to the position of the limiting cavity.

[0008] As a preferred embodiment of the present invention, the water meter box has an installation groove inside, a guide ring is rotatably installed inside the installation groove, a second limiting groove is provided on the bottom side of the installation groove, the second limiting groove has a rectangular circular ring in cross section, a second limiting block is fixedly installed on the side of the installation groove corresponding to the position of the second limiting groove, and the second limiting block is rotatably connected to the second limiting groove.

[0009] As a preferred embodiment of the present invention, a first limiting groove is provided on the bottom side of the first connecting ring, a first limiting block is fixedly installed on the upper end of the guide ring corresponding to the position of the first limiting groove, the first limiting block is rotatably installed inside the first limiting groove, a rotating block is fixedly installed on the bottom side of the guide ring, the rotating block has a three-fifths circle cross-section, and a first movable cavity adapted to the rotating block is provided on the upper end of the filter box, the rotating block is rotatably installed inside the first movable cavity.

[0010] As a preferred embodiment of the present invention, the constraint structure includes a second connecting block disposed above the first connecting ring, a third sliding rod extending upward through the second connecting block and fixedly mounted with a pressure block, a second connecting block movably mounted on the outer side of the third sliding rod corresponding to the lower part of the pressure block, a third limiting groove opened on the upper side of the first connecting ring, a third limiting block fixedly mounted on the bottom side of the second connecting block, threaded holes opened at the lower ends of the two third sliding rods, a first threaded post threadedly connected to the inside of the threaded holes, a third connecting block disposed between the third sliding rod and the first threaded post, a second connecting ring fixedly mounted between the two third connecting blocks, two second threaded posts fixedly mounted on the bottom side of the water meter box, the second threaded posts extending downward through the second connecting ring, a locking nut threadedly connected to the second threaded post corresponding to the upper part of the second connecting ring, and a handle fixedly mounted on the side of the third sliding rod.

[0011] As a preferred embodiment of the present invention, the drainage structure includes a rotating cylinder rotatably installed inside the mounting hole, and a second plug is threadedly connected to the inside of the rotating cylinder.

[0012] As a preferred embodiment of the present invention, the support structure includes a rotating groove formed on the bottom side inside the water meter box, a second rotating ring fixedly installed on the bottom side of the filter box corresponding to the position of the rotating groove, the second rotating ring being rotatably installed on the bottom side of the rotating groove, a second guide groove being equidistantly formed on the side of the second rotating ring, a protrusion fixedly installed on the upper end of the rotating cylinder, a second connecting rod fixedly installed on the side of the protrusion, and the side of the second connecting rod away from the protrusion being fixedly installed on the inner side of the second rotating ring.

[0013] Compared with the prior art, the beneficial effects that this invention can achieve are:

[0014] 1. This invention achieves cleaning and impurity removal functions through the cooperation of the filter box, cleaning block, diversion structure, and support structure, effectively preventing clogging. The filter holes on the side wall of the filter box can intercept solid impurities in the water flow. When cleaning is required, the operator rotates the third sliding rod, which moves the cleaning block on its side to press it against the outer wall of the filter box. Then, by rotating the rotating cylinder in the diversion structure, the second rotating ring, which is fixedly connected to it by the second connecting rod, is rotated, thereby driving the entire filter box to rotate. During this process, the stationary cleaning block and the rotating outer surface of the filter box continuously rub against each other, thereby scraping off the impurities attached to the area around the filter holes. The removed impurities are flushed by the water flow and finally discharged outside the meter through the opened rotating cylinder, greatly simplifying the maintenance process and ensuring the long-term smooth operation of the water meter.

[0015] 2. This invention provides a reliable anti-freezing protection mechanism through the coordinated design of a one-way valve and a drainage structure. The first plug in the one-way valve is tightly fitted to the first fixing ring under the action of the second spring, forming a seal. When the ambient temperature is too low and there is a risk of freezing and cracking, maintenance personnel can unscrew the second plug in the drainage structure to allow the water stored inside the water meter box to be discharged smoothly through the rotating cylinder, effectively avoiding damage caused by ice expansion. The one-way valve can prevent water in the external pipe from flowing back into the emptied water meter. The limiting mechanism inside the one-way valve, consisting of a movable block, a first spring, and a locking block, cooperates with the limiting cavity to ensure that the valve opens under normal water pressure, while the valve remains tightly closed under drainage or extremely low pressure conditions, thus realizing the key step of drainage and anti-freezing. This combination of drainage and one-way shut-off provides double protection for the survival of the water meter under severe cold conditions.

[0016] 3. This invention effectively improves the water meter's monitoring accuracy for small flow rates by using a special limiting structure, such as a limiting cavity and a locking block, inside the one-way valve. In traditional water meters, extremely low flow rates may not be able to fully open the valve, leading to inaccurate measurement. In this structure, the locking block on the side of the first block can be locked into a specific limiting cavity under the push of the first spring. This design sets an initial threshold for the opening of the first block. Only when the water pressure accumulates to a level sufficient to disengage the locking block from the limiting cavity will the valve open and perform large-scale flow measurement. For continuous but small flow rates, this structure can avoid ineffective and frequent opening and closing of the valve, allowing the water flow to drive the rotating wheel more stably, thereby ensuring that the water meter movement can accurately record all the water flowing through, significantly improving the metering performance under low flow conditions.

[0017] 4. This invention, through the combined action of a constraint structure and a support structure, ensures the stable operation of the core components inside the water meter, reducing vibration and displacement interference. The constraint structure, by tightening the locking nut, presses the second connecting ring downwards, and then transmits the pressure to the pressure block and the second connecting block through the third sliding rod. Ultimately, this causes the first connecting ring to generate a continuous preload on the guide ring and filter box below. At the same time, the second rotating ring at the bottom of the filter box is stably supported in the rotating groove, forming a reliable bottom support. This "upper pressure and lower support" combination tightly constrains the moving parts such as the guide ring and filter box in their designed positions, effectively preventing shaking or deflection caused by water flow impact, creating an ideal environment for the smooth rotation of the internal rotating wheel, and thus ensuring the long-term stability and reliability of the metering data.

[0018] 5. This invention achieves integrated control of convenient external operation and internal function switching through the linkage design of the first rotating ring, the toothed ring, and the sliding block. The operator does not need to open the water meter box; he only needs to rotate the first rotating ring externally. The toothed ring is driven to rotate by the fixed rotating teeth, which in turn drives the first connecting ring to rotate. The first connecting ring, in turn, drives the sliding block to move in the second movable cavity through the first connecting block. This design allows the sliding block to be precisely moved to the position of blocking or opening the inlet of the second connecting pipe, thereby switching between the cleaning mode and the normal metering mode. This simplifies the water meter maintenance process and reduces the risk of failure that may be introduced by frequent opening of the cover. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is a side sectional view of the present invention;

[0021] Figure 3 For the present invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0022] Figure 4 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B;

[0023] Figure 5 For the present invention Figure 2 Enlarged schematic diagram of the structure at point C;

[0024] Figure 6 This is a cross-sectional view of the present invention;

[0025] Figure 7 For the present invention Figure 6 Enlarged schematic diagram of the structure at point D;

[0026] Figure 8 This is a schematic diagram of the filter box structure of the present invention;

[0027] Figure 9 This is a schematic diagram of the sliding block structure of the present invention;

[0028] Figure 10 This is a schematic diagram of the second connecting ring structure of the present invention;

[0029] Figure 11 This is a schematic diagram of the second rotating ring structure of the present invention.

[0030] Wherein: 111, water meter box; 112, first connecting pipe; 113, second connecting pipe; 211, first fixing ring; 212, first blocking block; 213, first mounting cavity; 214, limiting cavity; 215, first spring; 216, movable block; 217, locking block; 221, first connecting rod; 222, first sliding rod; 223, first sliding groove; 224, fixing block; 225, second sliding groove; 226, second sliding rod; 311, guide ring; 312, first connecting ring; 313, diversion box; 321, first limiting groove; 322, first limiting block; 331, mounting groove; 332, second limiting groove; 333, second limiting block; 341, filter box; 342, filter hole; 351, first movable cavity; 352, rotating block; 411, second movable cavity; 4 12. Sliding block; 421. First guide groove; 422. First connecting block; 423. Toothed ring; 424. First rotating ring; 425. Rotating tooth; 511. Third sliding groove; 512. Fourth sliding groove; 513. Third sliding rod; 514. Cleaning block; 521. Third limiting groove; 522. Third limiting block; 523. Second connecting block; 524. Pressure block; 531. Threaded hole; 532. First threaded post; 533. Third connecting block; 534. Second connecting ring; 535. Second threaded post; 536. Locking nut; 537. Handle; 611. Mounting hole; 612. Rotating cylinder; 613. Second blocking block; 614. Second rotating ring; 615. Second guide groove; 616. Protrusion; 617. Second connecting rod; 618. Rotating groove; 711. Rotating wheel. Detailed Implementation

[0031] To make the technical means, creative features, and achieved objectives and effects of this invention easier to understand, the invention is further described below with reference to specific embodiments. However, the following embodiments are merely preferred embodiments of this invention and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments described herein without creative effort are all within the protection scope of this invention. Unless otherwise specified, the experimental methods in the following embodiments are conventional methods, and the materials and reagents used in the following embodiments are commercially available unless otherwise specified.

[0032] Example: Figures 1 to 11As shown, an anti-clogging, antifreeze water meter includes a water meter box 111. One end of the water meter box 111 is provided with a detachable first connecting pipe 112, and the other end of the water meter box 111 away from the first connecting pipe 112 is provided with a detachable second connecting pipe 113. A one-way valve is provided inside the second connecting pipe 113. The one-way valve includes a fixing block 224 installed inside the second connecting pipe 113. A second sliding groove 225 is formed at the center of the fixing block 224. A second sliding rod 226 is slidably installed inside the second sliding groove 225. A first blocking block 212 is fixedly installed at one end of the second sliding rod 226. A second spring, fixedly connected to the side of the fixing block 224, is fixedly installed at the end of the first blocking block 212 corresponding to the fixing block 224. A first fixing ring 211 is fixedly installed on the inner side of the pipe 113 corresponding to the side of the first blocking block 212. A first connecting rod 221 is fixedly installed on the inner side of the second connecting pipe 113. A first sliding groove 223 is formed on the side of the first connecting rod 221. A first sliding rod 222 is fixedly installed on the side of the first blocking block 212 corresponding to the position of the first sliding groove 223. One end of the first sliding rod 222 extends into the interior of the first sliding groove 223. A limiting cavity 214 is formed on the inner side of the second connecting pipe 113 corresponding to the position of the first blocking block 212. The limiting cavity 214 is an annular cavity with a triangular cross-section. Two first mounting cavities 213 are formed on the side of the first blocking block 212. A movable block 216 is fixedly installed inside the first mounting cavity 213. One end of the first spring 215 is fixedly installed, and the end of the first spring 215 away from the movable block 216 is fixedly installed on the side of the first mounting cavity 213. A locking block 217 is fixedly installed on the side of the movable block 216 corresponding to the position of the limiting cavity 214. A guide ring 311 is movably arranged inside the water meter box 111. A first connecting ring 312 is movably arranged above the guide ring 311. A filter box 341 is movably arranged below the guide ring 311. Filter holes 342 are equidistantly opened on the side of the filter box 341. A fixed drain box 313 is arranged inside the first connecting ring 312. A second movable cavity 411 is opened inside the water meter box 111 corresponding to the position of the output port of the water meter box 111. A movable sliding mechanism is arranged inside the second movable cavity 411. The moving block 412 and the guide ring 311 have a third sliding groove 511 on their sides. The water meter box 111 has a fourth sliding groove 512 on its bottom side corresponding to the third sliding groove 511. Two symmetrically distributed third sliding rods 513 are movably installed inside the third sliding groove 511 and the fourth sliding groove 512. A detachable cleaning block 514 is provided on the side of the third sliding rod 513. A constraint structure for pressing the first connecting ring 312 is provided above the third sliding rod 513. The water meter box 111 has a mounting hole 611 on its bottom side. A flow-draining structure is provided inside the mounting hole 611. The filter box 341 has a support structure fixedly connected to the flow-draining structure on its bottom side. A rotating wheel 711 is provided inside the flow-draining box 313.The water meter movement, compatible with the rotating wheel 711, is located on the upper part of the interior of the water meter box 111.

[0033] More specifically, water flows through the first connecting pipe 112, the water meter box 111, and the second connecting pipe 113, then through a one-way valve. The water flow drives the rotating wheel 711 to rotate; the faster the water flow, the faster the rotor rotates. By accurately recording the total number of impeller revolutions, the total flow rate can be calculated. During installation, pressing down the two third sliding rods 513 causes the third sliding rods 513 to press down on the first connecting ring 312 through a constraint structure. The first connecting ring 312 then presses down on the guide ring 311, causing the guide ring 311 to... The filter box 341 is compressed by the bottom support structure, which in turn supports the filter box 341. The support structure and guide ring 311 compress the filter box 341, improving the stability of the internal structure. When it is necessary to clean the outside of the filter box 341, first rotate the sliding block 412 to move it to the position of the connection hole between the water meter box 111 and the second connecting pipe 113 to block the connection hole. Then rotate the third sliding rod 513, which moves the cleaning block 514 along with it. The cleaning block 514 is pressed against the outside of the filter box 341, and then the supporting structure is rotated by the drainage structure. The supporting structure and the filter box 341 rotate, and the cleaning block 514 contacts the rotating filter box 341 to clean the impurities on the outside of the filter box 341. After cleaning, the water inside the water meter box 111 is guided by the drainage structure to directly clean the cleaned impurities from the inside of the water meter box 111. When the first mounting cavity 213 moves to the position of the limiting cavity 214, the first spring 215 compresses. The movable block 216 moves the locking block 217 into the limiting cavity 214. When the internal pressure is large enough, the first blocking block 212 will be forced open, thus avoiding inaccurate monitoring of small flow rates. The first blocking block 212 is squeezed by the second spring, so that the first blocking block 212 and the side of the first fixing ring 211 fit together to perform a sealing operation. When the water pressure is large enough, the water pressure squeezes the first blocking block 212, and the first blocking block 212 overcomes the pressure of the second spring to move and allow the water to flow.

[0034] like Figure 2 , Figure 8 and Figure 11As shown, specifically, the diversion structure includes a rotating cylinder 612 rotatably installed inside the mounting hole 611, with a second plug 613 threadedly connected inside the rotating cylinder 612. The support structure includes a rotating groove 618 opened on the bottom side inside the water meter box 111. A second rotating ring 614 is fixedly installed on the bottom side of the filter box 341 at a position corresponding to the rotating groove 618. The second rotating ring 614 is rotatably installed on the bottom side of the rotating groove 618. Second guide grooves 615 are equidistantly opened on the side of the second rotating ring 614. A protrusion 616 is fixedly installed on the upper end of the rotating cylinder 612. A second connecting rod 617 is fixedly installed on the side of the protrusion 616. The side of the second connecting rod 617 away from the protrusion 616 is fixedly installed on the inner side of the second rotating ring 614.

[0035] More specifically, after the second block 613 is moved out of the interior of the rotating cylinder 612, the water inside the water meter box 111 can flow out from the interior of the rotating cylinder 612.

[0036] like Figure 4 As shown, specifically, the water meter box 111 has an installation groove 331 inside, and the guide ring 311 is rotatably installed inside the installation groove 331. The bottom side of the installation groove 331 has a second limiting groove 332. The second limiting groove 332 has a rectangular circular ring in cross section. The side of the installation groove 331 is fixedly installed with a second limiting block 333 corresponding to the position of the second limiting groove 332. The second limiting block 333 is rotatably connected to the second limiting groove 332.

[0037] More specifically, the rotation of the mounting groove 331 is constrained by the second limiting groove 332 and the second limiting block 333.

[0038] like Figure 4 As shown, specifically, a first limiting groove 321 is provided on the bottom side of the first connecting ring 312, a first limiting block 322 is fixedly installed on the upper end of the guide ring 311 corresponding to the position of the first limiting groove 321, the first limiting block 322 is rotatably installed inside the first limiting groove 321, a rotating block 352 is fixedly installed on the bottom side of the guide ring 311, the rotating block 352 has a cross-section of a three-fifths circle, and a first movable cavity 351 adapted to the rotating block 352 is provided on the upper end of the filter box 341, the rotating block 352 is rotatably installed inside the first movable cavity 351.

[0039] More specifically, the first connecting ring 312 is constrained by the first limiting groove 321 and the first limiting block 322, and the filter box 341 is constrained by the first movable cavity 351 and the rotating block 352.

[0040] like Figure 4 , Figure 5 and Figure 10As shown, specifically, the constraint structure includes a second connecting block 523 disposed above the first connecting ring 312, a third sliding rod 513 extending upward through the second connecting block 523 and fixedly mounted with a pressure block 524, a second connecting block 523 movably mounted on the outer side of the third sliding rod 513 corresponding to the lower part of the pressure block 524, a third limiting groove 521 opened on the upper side of the first connecting ring 312, a third limiting block 522 fixedly mounted on the bottom side of the second connecting block 523, and threaded holes 531 opened at the lower ends of both third sliding rods 513. The internal thread of 531 is connected to a first threaded post 532. A third connecting block 533 is provided between the third sliding rod 513 and the first threaded post 532. A second connecting ring 534 is fixedly installed between the two third connecting blocks 533. Two second threaded posts 535 are fixedly installed on the bottom side of the water meter box 111. The second threaded posts 535 penetrate the second connecting ring 534 downwards. A locking nut 536 is threadedly connected to the second threaded post 535 corresponding to the upper part of the second connecting ring 534. A handle 537 is fixedly installed on the side of the third sliding rod 513.

[0041] More specifically, the second connecting ring 534 is pressed downward by the locking nut 536. The second connecting ring 534 moves downward along with the third sliding rod 513. The third sliding rod 513 moves downward along with the pressure block 524. The pressure block 524 presses the first connecting ring 312 through the second connecting block 523. The first connecting ring 312 presses the guide ring 311. The guide ring 311 presses the filter box 341 to fix it.

[0042] like Figure 6 and Figure 7 As shown, specifically, a first guide groove 421 is provided on the inner side of the water meter box 111 corresponding to the position of the second movable cavity 411. A first connecting block 422 is fixedly installed on the side of the sliding block 412 corresponding to the position of the first guide groove 421. The first connecting block 422 is an "L"-shaped rod. The end of the first connecting block 422 away from the sliding block 412 is fixedly installed on the upper side of the first connecting ring 312. A first rotating ring 424 is rotatably installed on the guide ring 311. A toothed ring 423 is fixedly installed on the outer side of the first connecting ring 312. A rotating tooth 425 is fixedly installed on the upper part of the first rotating ring 424 corresponding to the position of the toothed ring 423. The rotating tooth 425 and the toothed ring 423 mesh with each other. The sliding block 412 extends downward to the outer side of the water meter box 111.

[0043] More specifically, the first rotating ring 424 is rotated to rotate the rotating tooth 425, and the rotating tooth 425 meshes with the toothed ring 423 to rotate the first connecting ring 312. The first connecting ring 312 is rotated to rotate the first connecting block 422, and the first connecting block 422 rotates along with the sliding block 412.

[0044] Working principle: Water flows into the water meter box 111 from the first connecting pipe 112. First, the water flows into the filter box 341, where the filter holes 342 on its side wall intercept solid impurities in the water. Clean water then enters the filter box. Subsequently, the water flows into the flow box 313 and drives the rotating wheel 711 to rotate. The faster the water flow, the higher the rotation speed of the rotating wheel 711. The sensor connected to the water meter mechanism above the water meter box 111 records the number of rotations of the rotating wheel 711, thereby accurately calculating the total amount of water flowing through. Finally, the water flows into the second connecting pipe 113. Under sufficient water pressure, the first block 212 of the one-way valve moves against the resistance of the second spring, opening the flow channel and allowing water to be output normally. During this process, the constraint structure is tightened by the locking screw. The mother 536 presses the second connecting ring 534, causing the third sliding rod 513 to apply downward pressure to the first connecting ring 312 through the pressure block 524 and the second connecting block 523. The first connecting ring 312 then transmits the pressure to the guide ring 311 through the cooperation of the first limiting block 322 and the first limiting groove 321. Finally, the guide ring 311 presses the filter box 341 through the cooperation of the rotating block 352 and the first movable cavity 351. The bottom of the filter box 341 is supported in the rotating groove 618 by the second rotating ring 614 of the support structure, thus ensuring the overall stability of the internal components under the impact of water flow. When impurities accumulate on the outside of the filter box 341 and need to be cleaned, firstly, by rotating the first rotating ring 424, the rotating teeth 425 on it are rotated. 425 engages with the toothed ring 423 fixed on the first connecting ring 312, thereby driving the first connecting ring 312 to rotate. The rotation of the first connecting ring 312 drives the sliding block 412 to move within the first guide groove 421 inside the water meter box 111 via the first connecting block 422, until the sliding block 412 rotates and moves down, blocking the outlet of the water meter box 111 to the second connecting pipe 113. Then, the operator rotates the handles 537 on the two third sliding rods 513, causing the cleaning block 514 on the side of the third sliding rod 513 to move towards and press against the outer wall of the filter box 341. Then, the operator uses a tool to rotate the rotating cylinder 612 of the drainage structure. The rotating cylinder 612 drives the second rotating ring 614 of the support structure through the upper protrusion 616 and the second connecting rod 617. The rotating cylinder 618 rotates, thereby driving the filter box 341, which is fixed to the second rotating ring 614, to rotate as a whole. At this time, the stationary cleaning block 514 continuously rubs against the outer wall of the rotating filter box 341, scraping away the impurities attached to the area around the filter holes 342. Finally, the second block 613 in the drainage structure is unscrewed, and the water inside the water meter, carrying the scraped-off impurities, is quickly discharged through the rotating cylinder 612, completing the self-cleaning process. When the ambient temperature drops below freezing, to prevent the water inside the water meter from freezing and cracking, active drainage can be performed. First, similar to the self-cleaning process, the sliding block 412 is blocked by rotating the first rotating ring 424 to prevent the inlet of the second connecting pipe 113 from flowing back. Then, the second block 613 in the drainage structure is unscrewed.Under the influence of gravity, the water inside the water meter box 111 is completely drained through the opened rotating cylinder 612. Simultaneously, the one-way valve plays a crucial role in the drainage process. Due to the loss of internal water pressure, under the action of the second spring, the first blocking block 212 is tightly pressed against the first fixing ring 211 to form a seal. At the same time, the locking block 217 on the side of the first blocking block 212 is engaged with the limiting cavity 214 under the action of the first spring 215, further locking the valve. This effectively prevents water from the water supply network from flowing back into the emptied water meter, thus ensuring the water meter is in a safe, hollow state and achieving reliable antifreeze protection.

[0045] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. A clog-resistant, antifreeze water meter, comprising a water meter box (111), one end of which is provided with a detachable first connecting pipe (112), and the other end of the water meter box (111) away from the first connecting pipe (112) is provided with a detachable second connecting pipe (113), characterized in that, The second connecting pipe (113) is equipped with a one-way valve. The water meter box (111) is equipped with a guide ring (311). The guide ring (312) is equipped with a first connecting ring (312) above the guide ring (311). The filter box (341) is equipped with a filter hole (342) at equal intervals on the side of the filter box (341). The first connecting ring (312) is equipped with a fixed drainage box (313) inside. The water meter box (111) is equipped with a second movable cavity (411) at the position corresponding to the output port of the water meter box (111). The second movable cavity (411) is equipped with a movable sliding block (412). The guide ring (311) is equipped with a third sliding groove (5) on the side. 11) A fourth sliding groove (512) is provided on the bottom side of the water meter box (111) corresponding to the position of the third sliding groove (511). Two symmetrically distributed third sliding rods (513) are movably installed inside the third sliding groove (511) and the fourth sliding groove (512). A detachable cleaning block (514) is provided on the side of the third sliding rod (513). A constraint structure for pressing the first connecting ring (312) is provided above the third sliding rod (513). An installation hole (611) is provided on the bottom side of the water meter box (111). A flow-draining structure is provided inside the installation hole (611). A support structure that is fixedly connected to the flow-draining structure is provided on the bottom side of the filter box (341). A flow-draining box (313) is provided inside. A rotating wheel (711) is mounted inside the water meter box (111), and a water meter mechanism adapted to the rotating wheel (711) is provided on the upper part of the water meter box (111). A first guide groove (421) is provided on the inner side of the water meter box (111) corresponding to the position of the second active cavity (411). A first connecting block (422) is fixedly installed on the side of the sliding block (412) corresponding to the position of the first guide groove (421). The first connecting block (422) is an "L"-shaped rod. The end of the first connecting block (422) away from the sliding block (412) is fixedly installed on the upper side of the first connecting ring (312). A first rotating ring (424) is rotatably mounted on the guide ring (311). A toothed ring (423) is fixedly installed on the outer side of the first connecting ring (312). A rotating tooth (425) is fixedly installed above the ring (424) at the position corresponding to the toothed ring (423). The rotating tooth (425) meshes with the toothed ring (423). The sliding block (412) extends downward to the outside of the water meter box (111). The one-way valve includes a fixed block (224) installed inside the second connecting pipe (113). A second sliding groove (225) is opened at the center of the fixed block (224). A second sliding rod (226) is slidably installed inside the second sliding groove (225). A first blocking block (212) is fixedly installed at one end of the second sliding rod (226). A second spring is fixedly connected to the side of the fixed block (224) at one end of the first blocking block (212).A first fixing ring (211) is fixedly installed on the inner side of the second connecting pipe (113) corresponding to the side of the first blocking block (212). A first connecting rod (221) is fixedly installed on the inner side of the second connecting pipe (113). A first sliding groove (223) is opened on the side of the first connecting rod (221). A first sliding rod (222) is fixedly installed on the side of the first blocking block (212) corresponding to the position of the first sliding groove (223). One end of the first sliding rod (222) extends into the interior of the first sliding groove (223). The inner side of the second connecting pipe (113) corresponds to the position of the first blocking block (212). A limiting cavity (214) is provided at position 2), the limiting cavity (214) being a triangular annular cavity. Two first mounting cavities (213) are provided on the side of the first blocking block (212). A movable block (216) is fixedly installed inside the first mounting cavity (213). A first spring (215) is fixedly installed at one end of the movable block (216), and the end of the first spring (215) away from the movable block (216) is fixedly installed on the side of the first mounting cavity (213). A locking block (217) is fixedly installed on the side of the movable block (216) corresponding to the position of the limiting cavity (214).

2. The anti-clogging, antifreeze water meter according to claim 1, characterized in that, The water meter box (111) has an installation groove (331) inside. The guide ring (311) is rotatably installed inside the installation groove (331). The bottom side of the installation groove (331) has a second limiting groove (332). The second limiting groove (332) has a rectangular circular ring in cross section. The side of the installation groove (331) is fixedly installed with a second limiting block (333) corresponding to the position of the second limiting groove (332). The second limiting block (333) is rotatably connected to the second limiting groove (332).

3. The anti-clogging, antifreeze water meter according to claim 2, characterized in that, The bottom side of the first connecting ring (312) is provided with a first limiting groove (321). The upper end of the guide ring (311) is fixedly installed with a first limiting block (322) corresponding to the position of the first limiting groove (321). The first limiting block (322) is rotatably installed inside the first limiting groove (321). The bottom side of the guide ring (311) is fixedly installed with a rotating block (352). The rotating block (352) has a cross-section of a three-fifths circle. The upper end of the filter box (341) is provided with a first movable cavity (351) that is adapted to the rotating block (352). The rotating block (352) is rotatably installed inside the first movable cavity (351).

4. The anti-clogging, antifreeze water meter according to claim 3, characterized in that, The constraint structure includes a second connecting block (523) disposed above the first connecting ring (312), a third sliding rod (513) extending upward through the second connecting block (523) and fixedly mounted with a pressure block (524), a second connecting block (523) movably mounted on the outer side of the third sliding rod (513) corresponding to the lower part of the pressure block (524), a third limiting groove (521) opened on the upper side of the first connecting ring (312), a third limiting block (522) fixedly mounted on the bottom side of the second connecting block (523), and threaded holes (531) opened at the lower ends of both third sliding rods (513). The internal threaded connection is a first threaded post (532), a third connecting block (533) is provided between the third sliding rod (513) and the first threaded post (532), a second connecting ring (534) is fixedly installed between the two third connecting blocks (533), two second threaded posts (535) are fixedly installed on the bottom side of the water meter box (111), the second threaded post (535) passes through the second connecting ring (534) downwards, a locking nut (536) is threaded on the second threaded post (535) corresponding to the upper part of the second connecting ring (534), and a handle (537) is fixedly installed on the side of the third sliding rod (513).

5. The anti-clogging, antifreeze water meter according to claim 4, characterized in that, The drainage structure includes a rotating cylinder (612) rotatably installed inside the mounting hole (611), and a second plug (613) is threadedly connected inside the rotating cylinder (612).

6. The anti-clogging, antifreeze water meter according to claim 5, characterized in that, The support structure includes a rotating groove (618) opened inside the bottom side of the water meter box (111). A second rotating ring (614) is fixedly installed on the bottom side of the filter box (341) corresponding to the position of the rotating groove (618). The second rotating ring (614) is rotatably installed on the bottom side of the rotating groove (618). A second guide groove (615) is opened at equal intervals on the side of the second rotating ring (614). A protrusion (616) is fixedly installed on the upper end of the rotating cylinder (612). A second connecting rod (617) is fixedly installed on the side of the protrusion (616). The side of the second connecting rod (617) away from the protrusion (616) is fixedly installed on the inner side of the second rotating ring (614).

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