Water meter input end leakage protection device based on rotation

Abstract

The present invention relates to a water leakage protection device, in particular, to a water meter input end leakage protection device based on a rotary type. The device comprises a mounting device and a protective device arranged on the top of the mounting device, wherein the mounting device comprises a water meter body and a mounting shell, wherein one end of the water meter body is connected with a water pipe, a slot is provided on the surface of the water pipe, and one end of the water pipe and the water meter body passes through the mounting shell. In the water meter input end leakage protection device based on a rotary type, a water baffle is arranged, and when there is a lot of water leakage, the impeller is driven to rotate by the pressure of water, the impeller drives the threaded column to rotate by the insertion rod, and the threaded column drives the water baffle to move downward to block the water pipe by the screwing force, so as to realize the automatic closure of the water pipe when there is a water leakage, thereby solving the problem that the current method cannot utilize water, and when people are not at home and the water leakage is large, the simple alarm is ineffective and still causes the water to continue to drip.

Description

Technical Field

[0001] The invention relates to a water leakage protection device, in particular to a water leakage protection device based on a rotary water meter input end. Background Art

[0002] A water meter is an instrument for measuring water flow, most of which measure the cumulative flow of water. It is generally divided into two categories: volumetric water meters and velocity water meters. It originated in the UK and has a history of nearly two hundred years. When choosing the specifications of a water meter, you should first estimate the size and range of the flow rate normally used, and then choose the water meter with the specification that is closest to the commonly used flow rate as the first choice.

[0003] The water meter needs to be connected to the water pipe during the installation process. However, due to the different specifications of the water meter and the water pipe, the connection between the water meter and the water pipe is prone to be larger or smaller. When the water pipe opening is larger, in order to prevent water leakage, raw tape is wrapped around the connection to prevent water leakage. However, after long-term use, the sealing performance of the connection between the water meter and the water pipe is reduced, which will still cause water leakage. The current protection device collects the dripping water and triggers the switch alarm through the weight of the water to draw people's attention. This method cannot utilize water. When people are not at home and the leak is larger, the simple alarm is ineffective and will still cause water to continue dripping. Summary of the invention

[0004] The purpose of the present invention is to provide a rotary water meter input end water leakage protection device to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, a water meter input end water leakage protection device based on a rotary type is provided, comprising a mounting device and a protection device arranged on the top of the mounting device, the mounting device comprising a water meter body and a mounting shell, one end of the water meter body is connected with a water pipe, a slot is provided on the surface of the water pipe, one end of the water pipe and the water meter body passes through the mounting shell, a liquid storage cavity and an operating cavity are provided in the mounting shell, the liquid storage cavity and the operating cavity are separated by a partition, a leakage hole is provided at the bottom of the mounting shell at the liquid storage cavity, a water blocking plate is provided on the inner wall of the bottom of the mounting shell above the leakage hole, a stopper is slidably connected to the outer wall of the water pipe, the stopper is located in the operating cavity, and the top of the stopper is inclined, and the protection device at least comprises:

[0006] A drainage mechanism, the drainage mechanism comprising a drainage shell installed on the top of the installation shell, a drainage cavity and an installation cavity are arranged in the drainage shell, the installation cavity and the drainage cavity are separated by a baffle, a plate hole connected to the drainage cavity is opened on the side wall of the baffle, the drainage cavity is connected to the liquid storage cavity, and a support plate is installed in the installation cavity;

[0007] A transmission assembly, the transmission assembly includes a transmission shaft, one end of the transmission shaft passes through a support plate and is rotatably connected thereto, an impeller is provided on the outer wall of the transmission shaft, a plug rod is fixedly connected to the bottom of the transmission shaft, a threaded column is slidably connected to the outer wall of the plug rod, the threaded column passes through a drainage shell and a mounting shell and is threadedly connected thereto, one end of the threaded column is located in the operating cavity, one end of the threaded column is rotatably connected to a water baffle plate, a telescopic rod is provided on the top of the water baffle plate, and one end of the telescopic rod is connected to the top inner wall of the mounting shell.

[0008] As a further improvement of the technical solution, a ball groove is provided on the top of the stopper, and a roller is rotatably connected in the ball groove.

[0009] As a further improvement of the technical solution, a protective pad is provided on the inner wall of the stopper, and the inner wall of the protective pad is in contact with the outer wall of the water pipe.

[0010] As a further improvement of the present technical solution, a mounting plate is provided in the operating cavity, a connecting cavity is formed between the mounting plate and the bottom of the mounting shell, the connecting cavity is communicated with the liquid storage cavity, a force-bearing plate is slidably connected in the connecting cavity, a mounting column is provided on the side wall of the force-bearing plate, the mounting column passes through the mounting plate and is slidably connected thereto, and one end of the mounting column is fixedly connected to the bottom of the block.

[0011] As a further improvement of the technical solution, one end of the force-bearing plate is connected to a compression spring, and the other end of the compression spring is fixedly connected to the inner wall of the mounting shell.

[0012] As a further improvement of the present technical solution, a sleeve is provided on the outer wall of the compression spring, one end of the sleeve is connected to the inner wall of the mounting shell, a sleeve rod is slidably connected inside the sleeve, one end of the sleeve rod is connected to one end of the compression spring, and the other end of the sleeve rod is connected to the side wall of the force-bearing plate.

[0013] As a further improvement of the technical solution, a drainage hole is provided at the top of the drainage shell located above the drainage cavity, a protective cover is provided at the top of the drainage shell located on the periphery of the drainage hole, a groove is provided at the top of the drainage shell located on the periphery of the drainage hole, the protective cover is slidably arranged in the groove, and a mounting spring is provided at the bottom of the protective cover, one end of the mounting spring is fixed in the groove.

[0014] As a further improvement of the technical solution, the bottom of the mounting shell is threadedly connected to a connecting rod, and the bottom of the connecting rod is rotatably connected to a liquid storage box.

[0015] As a further improvement of the present technical solution, the top of the protective cover is slidably connected to a connecting shaft, the connecting shaft passes through the drainage shell and is rotatably connected thereto, the bottom end of the connecting shaft is fixedly connected to a blade, the top of the connecting shaft is provided with a first brush, the top of the drainage shell is also rotatably connected to a support shaft, the outer wall of the support shaft is provided with a second brush, and the support shaft and the connecting shaft are connected by a transmission belt.

[0016] As a further improvement of the present technical solution, the bottom end of the support shaft is rotatably connected to a slider, the slider is slidably connected to the top of the drainage shell, a plug post is provided at the bottom of the support shaft, and a plug hole connected to the plug post is provided at the top of the transmission shaft.

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

[0018] 1. In the water leakage protection device at the input end of the rotary water meter, a water baffle is set. When the water leakage is large, the water pressure drives the impeller to rotate, and the impeller drives the threaded column to rotate through the inserted rod. The threaded column drives the water baffle to move down to block the water pipe through the screw force, so as to realize automatic closure of the water pipe when leaking, which solves the problem that the current method cannot utilize water. When people are not at home and the leak is large, a simple alarm is useless and will still cause water to continue dripping.

[0019] 2. In the water meter input end leakage protection device based on rotation, the blades are arranged, and the blades drive the first brush to rotate through the connecting shaft, and the connecting shaft drives the supporting shaft to rotate through the transmission belt, and the supporting shaft drives the second brush to rotate, and the second brush and the first brush rotate to clean the top of the transmission shaft, so as to realize the utilization of water and automatically clean the device at the same time.

[0020] 3. In the water meter input end leakage protection device based on rotation, the support shaft is pressed downward by the provided plug column, and the support shaft drives the slider to move downward so that the plug column is inserted into the insertion hole. At this time, the support shaft is rotated, and the support shaft drives the transmission shaft to rotate through the plug column. The rotation of the transmission shaft can drive the block to move upward, so as to improve the resetting efficiency of the block. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0022] Figure 2 This is a schematic diagram of the structure of a water meter body according to Embodiment 1 of the present invention;

[0023] Figure 3 It is a schematic cross-sectional view of the installation shell structure of Example 1 of the present invention;

[0024] Figure 4 This is a schematic diagram of the block structure of Example 1 of the present invention;

[0025] Figure 5 This is a schematic diagram of the structure of a protective device according to Embodiment 1 of the present invention;

[0026] Figure 6 This is a schematic diagram of the drainage mechanism structure of Example 1 of the present invention;

[0027] Figure 7 This is a schematic diagram of the transmission assembly structure of Example 1 of the present invention;

[0028] Figure 8 This is a schematic diagram of the protective cover structure of Example 1 of the present invention;

[0029] Fig. 9 This is a schematic diagram of the installation shell structure of Example 1 of the present invention;

[0030] Fig.10 This is a schematic diagram of the first brush structure of Example 2 of the present invention;

[0031] Fig.11 This is a schematic diagram of the slider structure of Example 3 of the present invention.

[0032] The meaning of each number in the figure is:

[0033] 100. Installation device;

[0034] 110. water meter body; 111. water pipe; 112. slot;

[0035] 120, mounting shell; 121, liquid storage cavity; 122, operating cavity; 123, partition; 124, water blocking plate; 125, stopper; 126, roller; 127, protective pad;

[0036] 130, mounting plate; 131, mounting column; 132, force plate; 133, compression spring; 134, sleeve; 135, sleeve rod;

[0037] 200. Protective devices;

[0038] 210, drainage mechanism; 211, drainage shell; 212, drainage cavity; 213, installation cavity; 214, baffle; 215, plate hole; 216, support plate;

[0039] 220, transmission assembly; 221, transmission shaft; 222, impeller; 223, plug rod; 224, threaded column; 225, water retaining plate; 226, telescopic rod;

[0040] 230, drainage hole; 231, protective cover; 232, installation spring;

[0041] 240, connecting shell; 241, glass plate; 242, connecting rod; 243, liquid storage box;

[0042] 250, connecting shaft; 251, blade; 252, first brush; 253, supporting shaft; 254, second brush; 255, transmission belt;

[0043] 260, slider; 261, plug post; 262, plug hole. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] Example 1

[0048] See also Figure 1-Figure 9As shown, a rotary water meter input end water leakage protection device is provided, comprising an installation device 100 and a protection device 200 arranged on the top of the installation device 100, the installation device 100 comprises a water meter body 110 and a mounting shell 120, one end of the water meter body 110 is connected to a water pipe 111, a slot 112 is provided on the surface of the water pipe 111, the water pipe 111 and one end of the water meter body 110 pass through the mounting shell 120, the mounting shell 120 is provided with a liquid storage cavity 121 and an operating cavity 122, the liquid storage cavity 121 and the operating cavity 122 are connected to each other. The operating cavities 122 are isolated by a partition 123, a leakage hole is opened at the bottom of the installation shell 120 at the liquid storage cavity 121, and a water blocking plate 124 is arranged on the inner wall of the bottom of the installation shell 120 above the leakage hole. The water blocking plate 124 is preferably made of sponge material, and the sponge has a strong water blocking performance to prevent water from being directly discharged through the water blocking plate 124. The outer wall of the water pipe 111 is slidably connected with a stopper 125, and the stopper 125 is located in the operating cavity 122. The top of the stopper 125 is inclined. The protective device 200 at least includes:

[0049] The drainage mechanism 210 includes a drainage shell 211 installed on the top of the installation shell 120. The drainage shell 211 is provided with a drainage cavity 212 and a mounting cavity 213. The mounting cavity 213 is separated from the drainage cavity 212 by a baffle 214. The side wall of the baffle 214 is provided with a plate hole 215 connected to the drainage cavity 212. The drainage cavity 212 is connected to the liquid storage cavity 121. A support plate 216 is installed in the mounting cavity 213.

[0050] The transmission assembly 220 includes a transmission shaft 221, one end of the transmission shaft 221 passes through the support plate 216 and is rotatably connected thereto, an outer wall of the transmission shaft 221 is provided with an impeller 222, a plug rod 223 is fixedly connected to the bottom of the transmission shaft 221, a threaded column 224 is slidably connected to the outer wall of the plug rod 223, the threaded column 224 passes through the drainage shell 211 and the mounting shell 120 and is threadedly connected thereto, one end of the threaded column 224 is located in the operating cavity 122, one end of the threaded column 224 is rotatably connected to a water baffle 225, a telescopic rod 226 is provided on the top of the water baffle 225, the telescopic rod 226 is composed of a plurality of slidably connected round rods, one end of the telescopic rod 226 is connected to the top of the mounting shell 120 The inner wall of the device is connected. In order to facilitate maintenance of the device, a notch is provided on one side of the drainage shell 211 and the installation shell 120, and a connecting shell 240 is installed at the notch. A glass plate 241 is installed on the side wall of the connecting shell 240. During maintenance, the connecting shell 240 is opened to operate the inner wall of the device. The set glass plate 241 can be used to quickly check the inner wall of the device. Through the set water baffle 225, when there is a lot of water leakage, the impeller 222 is driven to rotate by the water pressure, and the impeller 222 drives the threaded column 224 to rotate through the inserted rod 223. The threaded column 224 drives the water baffle 225 to move downward through the screw force to block the water pipe 111, so as to achieve automatic closing of the water pipe 111 when leaking.

[0051] When the installation device 100 and the protective device 200 of this embodiment are used, when there is water leakage between the water meter body 110 and the water pipe 111, water drops fall into the liquid storage cavity 121 and are discharged through the water blocking plate 124 and the leakage hole. When the water leakage between the water meter body 110 and the water pipe 111 is large, the amount of water leakage is much greater than the amount of water discharged through the leakage hole. At this time, water accumulates in the liquid storage cavity 121, and the water enters the drainage cavity 212 through the liquid storage cavity 121. When the drainage cavity 212 is full of water, there is still water leakage between the water meter body 110 and the water pipe 111 and a certain pressure is generated. When the pressure is too high, water is sprayed out through the plate hole 215. When the water is sprayed out, it contacts the impeller 222 and drives it Rotate, the impeller 222 drives the transmission shaft 221 to rotate, the transmission shaft 221 drives the threaded column 224 to rotate through the insertion rod 223, the threaded column 224 is moved downward during the rotation process by the screw force, the threaded column 224 moves downward to drive the water baffle 225 to move downward, the water baffle 225 moves downward and contacts with the top of the block 125, since the top of the block 125 is inclined, the water baffle 225 pushes the block 125 to move during the downward movement, and the block 125 is disengaged from the slot 112 during the movement, at this time the slot 112 is opened and the block 125 moves downward and is inserted into the slot 112, the block 125 blocks the water in the water pipe 111, so that the water cannot continue to flow, thereby realizing protection against water leakage.

[0052] In addition, in order to reduce the friction between the block 125 and the water baffle 225, a ball groove is opened on the top of the block 125, and a roller 126 is rotatably connected in the ball groove. When the water baffle 225 moves down and contacts the roller 126, the roller 126 is rotated by the force of the water baffle 225. During the rotation process, the block 125 is displaced, thereby reducing the friction between the block 125 and the water baffle 225 and improving the smoothness of the displacement of the block 125.

[0053] Furthermore, in order to prevent water from flowing out through the gap between the slot 112 and the block 125, a protective pad 127 is provided on the inner wall of the block 125, and the inner wall of the protective pad 127 is in contact with the outer wall of the water pipe 111. The protective pad 127 is preferably made of rubber material, and the rubber has strong flexibility, so as to fill the gap between the slot 112 and the block 125 to prevent water from flowing out.

[0054] Furthermore, in order to improve the efficiency of the displacement of the block 125, a mounting plate 130 is provided in the operating cavity 122, and a connecting cavity is formed between the mounting plate 130 and the bottom of the mounting shell 120, and the connecting cavity is connected to the liquid storage cavity 121, and a force plate 132 is slidably connected in the connecting cavity, and a mounting column 131 is provided on the side wall of the force plate 132, which passes through the mounting plate 130 and is slidably connected thereto, and one end of the mounting column 131 is fixedly connected to the bottom of the block 125. When the water pressure in the liquid storage cavity 121 is large, the water pushes the force plate 132 to cause it to displace, and the force plate 132 drives the block 125 to displace through the mounting column 131, thereby reducing the force used by the water retaining plate 225 to push the block 125 downward, so that the water retaining plate 225 can be easily moved downward.

[0055] Specifically, in order to achieve rapid resetting of the block 125, one end of the force plate 132 is connected to a compression spring 133, and the other end of the compression spring 133 is fixedly connected to the inner wall of the mounting shell 120. When the force plate 132 is displaced, the compression spring 133 is forced to start compressing. When the water baffle plate 225 is pulled out of the slot 112, the water baffle plate 225 cancels the limit on the block 125. At this time, the compression spring 133 pushes the force plate 132 through its own elasticity, so that the force plate 132 drives the block 125 to move, thereby achieving rapid resetting of the block 125.

[0056] In addition, in order to prevent the compression spring 133 from being corroded due to long-term contact with rainwater, a sleeve 134 is provided on the outer wall of the compression spring 133, one end of the sleeve 134 is connected to the inner wall of the mounting shell 120, and a sleeve rod 135 is slidably connected inside the sleeve 134, one end of the sleeve rod 135 is connected to one end of the compression spring 133, and the other end of the sleeve rod 135 is connected to the side wall of the force-bearing plate 132. The compression spring 133 is isolated by the sleeve rod 135 and the sleeve rod 135, so that external water cannot contact the compression spring 133, thereby improving the service life of the compression spring 133.

[0057] Furthermore, in order to prevent the pressure in the drainage cavity 212 from being too high, a drainage hole 230 is provided at the top of the drainage shell 211 located above the drainage cavity 212, a protective cover 231 is provided above the drainage shell 211 located at the periphery of the drainage hole 230, and a groove is provided at the top of the drainage shell 211 located at the periphery of the drainage hole 230. The protective cover 231 is slidably arranged in the groove, and a mounting spring 232 is provided at the bottom of the protective cover 231. One end of the mounting spring 232 is fixed in the groove. When the water pressure in the drainage cavity 212 is high, the drainage shell 211 is provided with a protective cover 231. The impact force of water sprayed from the plate hole 215 on the impeller 222 is too great, which can easily damage the impeller 222. Therefore, through the protective cover 231, when the pressure is relatively high, water lifts up the protective cover 231 through the drainage hole 230, and then the water flows out from the drainage hole 230, thereby reducing the pressure in the drainage cavity 212. When the pressure is reduced, the installation spring 232 pulls the protective cover 231 back into the groove through its own elasticity, so that the drainage hole 230 cannot contact the outside world, thereby realizing the regulation of the pressure in the drainage cavity 212.

[0058] Furthermore, in order to facilitate the collection of leaked water, the bottom of the mounting shell 120 is threadedly connected to a connecting rod 242, and the bottom of the connecting rod 242 is rotatably connected to a liquid storage box 243, which is arranged at the bottom of the mounting shell 120. Water falls into the liquid storage box 243 by gravity, thereby realizing the collection of water.

[0059] Example 2

[0060] In order to utilize the discharged water, the following improvements are made based on Example 1:

[0061] See also Fig.10As shown, the top of the protective cover 231 is slidably connected with a connecting shaft 250, which passes through the drainage shell 211 and is rotatably connected thereto, the bottom end of the connecting shaft 250 is fixedly connected with a blade 251, the top of the connecting shaft 250 is provided with a first brush 252, the top of the drainage shell 211 is also rotatably connected with a support shaft 253, the outer wall of the support shaft 253 is provided with a second brush 254, the support shaft 253 and the connecting shaft 250 are connected by a transmission belt 255, when water is discharged through the drainage hole 230, the water flow drives the blade 251 to rotate, the blade 251 drives the first brush 252 to rotate through the connecting shaft 250, the connecting shaft 250 drives the support shaft 253 to rotate through the transmission belt 255, the support shaft 253 drives the second brush 254 to rotate, the second brush 254 and the first brush 252 rotate to clean the top of the transmission shaft 221, so as to realize the utilization of water and automatically clean the device at the same time.

[0062] Example 3

[0063] In order to facilitate the removal of the stopper 125 from the slot 112, the following improvements are made based on Example 2:

[0064] See also Fig.11 As shown, the bottom end of the support shaft 253 is rotatably connected to a slider 260, and the slider 260 is slidably connected to the top of the drainage shell 211. A plug post 261 is provided at the bottom of the support shaft 253, and a plug hole 262 connected to the plug post 261 is provided at the top of the transmission shaft 221. Considering that the connection shell 240 needs to be removed with a tool to reset the block 125, this operation is relatively cumbersome. Therefore, when the block 125 needs to be pulled out of the slot 112, the support shaft 253 is pressed downward, and the support shaft 253 drives the slider 260 to move downward so that the plug post 261 is inserted into the plug hole 262. At this time, the support shaft 253 is rotated, and the support shaft 253 drives the transmission shaft 221 to rotate through the plug post 261. The rotation of the transmission shaft 221 can drive the block 125 to move upward, so as to improve the resetting efficiency of the block 125.

[0065] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not intended to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. Based on the rotating water meter input end leakage protection device, Features: The invention comprises an installation device (100) and a protective device (200) arranged on the top of the installation device (100), wherein the installation device (100) comprises a water meter body (110) and a mounting shell (120), wherein one end of the water meter body (110) is connected to a water pipe (111), a slot (112) is provided on the surface of the water pipe (111), one end of the water pipe (111) and the water meter body (110) pass through the mounting shell (120), and a liquid storage cavity (121) and an operating cavity (122) are provided in the mounting shell (120). ), the liquid storage cavity (121) and the operating cavity (122) are separated by a partition (123), a leakage hole is provided at the bottom of the installation shell (120) located at the liquid storage cavity (121), a water blocking plate (124) is provided on the inner wall of the bottom of the installation shell (120) above the leakage hole, a stopper (125) is slidably connected to the outer wall of the water pipe (111), the stopper (125) is located in the operating cavity (122), and the top of the stopper (125) is inclined, and the protective device (200) at least comprises: A drainage mechanism (210), the drainage mechanism (210) comprising a drainage shell (211) mounted on the top of the mounting shell (120), a drainage cavity (212) and a mounting cavity (213) being arranged in the drainage shell (211), the mounting cavity (213) and the drainage cavity (212) being separated by a baffle (214), a plate hole (215) being arranged on a side wall of the baffle (214) and being connected to the drainage cavity (212), the drainage cavity (212) being connected to the liquid storage cavity (121), and a support plate (216) being installed in the mounting cavity (213); A transmission assembly (220), the transmission assembly (220) comprising a transmission shaft (221), one end of the transmission shaft (221) passing through a support plate (216) and being rotatably connected thereto, an outer wall of the transmission shaft (221) being provided with an impeller (222), a plug rod (223) being fixedly connected to the bottom of the transmission shaft (221), a threaded column (224) being slidably connected to the outer wall of the plug rod (223), the threaded column (224) passing through a drainage shell (211) and a mounting shell (120) and being threadably connected thereto, one end of the threaded column (224) being located in an operating cavity (122), one end of the threaded column (224) being rotatably connected to a water baffle (225), a telescopic rod (226) being provided at the top of the water baffle (225), one end of the telescopic rod (226) being connected to the top inner wall of the mounting shell (120); A mounting plate (130) is arranged in the operating cavity (122); a connecting cavity is formed between the mounting plate (130) and the bottom of the mounting shell (120); the connecting cavity is in communication with the liquid storage cavity (121); a force-bearing plate (132) is slidably connected in the connecting cavity; a mounting column (131) is arranged on the side wall of the force-bearing plate (132); the mounting column (131) passes through the mounting plate (130) and is slidably connected thereto; one end of the mounting column (131) is fixedly connected to the bottom of the stopper (125); One end of the force-bearing plate (132) is connected to a compression spring (133), and the other end of the compression spring (133) is fixedly connected to the inner wall of the mounting shell (120); The outer wall of the compression spring (133) is sleeved with a sleeve (134), one end of the sleeve (134) is connected to the inner wall of the mounting shell (120), a sleeve rod (135) is slidably connected inside the sleeve (134), one end of the sleeve rod (135) is connected to one end of the compression spring (133), and the other end of the sleeve rod (135) is connected to the side wall of the force-bearing plate (132).

2. The rotary water meter input end water leakage protection device according to claim 1, Features: A ball groove is formed on the top of the stopper (125), and a roller (126) is rotatably connected in the ball groove.

3. The rotary water meter input end water leakage protection device according to claim 1, Features: The inner wall of the stopper (125) is sleeved with a protective pad (127), and the inner wall of the protective pad (127) is in contact with the outer wall of the water pipe (111).

4. The rotary water meter input end water leakage protection device according to claim 1, Features: The drainage shell (211) is provided with a drainage hole (230) at the top thereof, located above the drainage cavity (212); a protective cover (231) is provided at the top thereof, located on the periphery of the drainage hole (230); a groove is provided at the top thereof, located on the periphery of the drainage hole (230); the protective cover (231) is slidably arranged in the groove; a mounting spring (232) is provided at the bottom thereof, and one end of the mounting spring (232) is fixed in the groove.

5. The rotary water meter input end water leakage protection device according to claim 1, Features: The bottom of the mounting shell (120) is threadedly connected to a connecting rod (242), and the bottom of the connecting rod (242) is rotatably connected to a liquid storage box (243).

6. The rotary water meter input end water leakage protection device according to claim 4, Features: The top of the protective cover (231) is slidably connected to a connecting shaft (250), the connecting shaft (250) passes through the drainage shell (211) and is rotatably connected thereto, the bottom end of the connecting shaft (250) is fixedly connected to a blade (251), the top end of the connecting shaft (250) is provided with a first brush (252), the top of the drainage shell (211) is also rotatably connected to a supporting shaft (253), the outer wall of the supporting shaft (253) is provided with a second brush (254), and the supporting shaft (253) and the connecting shaft (250) are connected via a transmission belt (255).

7. The rotary water meter input end water leakage protection device according to claim 6, Features: The bottom end of the support shaft (253) is rotatably connected to a slider (260), and the slider (260) is slidably connected to the top of the drainage shell (211). The bottom of the support shaft (253) is provided with an insertion column (261), and the top of the transmission shaft (221) is provided with an insertion hole (262) that is plugged into the insertion column (261).

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