A magnetically-repulsive water meter and method of use

Abstract

The application discloses a kind of anti-magnetic induction type water meter and its using method, it is related to water meter field, a kind of anti-magnetic induction type water meter, including water meter body, rotating cylinder and external water pipe, rotating cylinder rotation is arranged on water meter body, water meter body is located in rotating cylinder, the both ends of water meter body are fixedly connected with connecting pipe, and the both ends of water meter body are all equipped with threaded cap on connecting pipe;The threaded cap of both ends of rotating cylinder is screwed on external water pipe by rotating rotating cylinder, in turn, without tightening threaded cap of both ends of water meter body one by one, installation efficiency is accelerated, simultaneously, water meter body is located in rotating cylinder, and threaded cap is sealed by sealing air bag and sealing glue in liquid storage cylinder, rainwater can be prevented to enter rotating cylinder and erode water meter body, simultaneously, protective gas is filled into rotating cylinder and dial when installing water meter body, for further improving the protection effect of water meter body.

Description

Technical Field

[0001] This invention belongs to the field of water meter technology, specifically, it relates to an antimagnetic induction water meter and its usage method. Background Technology

[0002] The main metering components of existing water meters include a sector-shaped metal pointer that rotates with the liquid flow, an induction coil, and a gear set that rotates with the sector-shaped metal pointer. When the liquid flows through the water meter, it pushes the sector-shaped metal pointer to rotate, which in turn drives the gears to rotate. By setting a torque conversion device between the sector-shaped metal pointer and the gear set, the gears reflect the real-time flow rate. For the electronic metering part, a magnetic field sensing device detects the rotation position of the sector-shaped metal pointer, encodes the induced electrical signal to reflect the liquid flow, and then calculates the volume of liquid flowing through.

[0003] The existing method uses antimagnetic stainless steel sheets as the material for the fan-shaped metal pointer, which can improve the antimagnetic effect during the use of water meters, thus preventing some users from maliciously altering the speed of the water meter.

[0004] Most existing water meters are installed in wells in building corridors. However, in some older residential areas, water meters are mostly installed outdoors, such as by digging pits in the ground, passing water pipes through the pits, and then installing the water meter on the water pipes in the pits and covering the pits with a cover. However, when it rains, rainwater flows into the pits or floods the pits, causing the water meters to be submerged in water. When the water meters are submerged in water, water will enter the water meters, corroding the electronic metering devices and other components, including the surface of the water meters, leading to damage to the water meters and a reduced lifespan. In addition, when installing water meters on water pipes, most existing water meters are connected to the water pipes using nuts, but the nuts at both ends of the water meters need to be tightened one by one, which reduces installation efficiency. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an antimagnetic induction water meter that can overcome or at least partially solve the above problems.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: an antimagnetic induction water meter, comprising a water meter body, a rotating cylinder, and an external water pipe, wherein the rotating cylinder is rotatably mounted on the water meter body, the water meter body is located inside the rotating cylinder, and connecting pipes are fixedly connected to both ends of the water meter body. Threaded caps are fitted onto the connecting pipes at both ends of the water meter body, and the outer walls of the threaded caps are slidably connected to the rotating cylinder. A limiting threaded ring is fixedly connected to one end of the connecting pipe, and the threaded caps are threadedly connected to the limiting threaded rings. The threaded caps are also threadedly connected to one end of the external water pipe. The invention further includes: a compression ring fixedly connected to one end of the threaded caps, the compression ring being located inside the rotating cylinder; elastic airbags are fixedly connected to the inner walls at both ends of the rotating cylinder, the compression ring corresponding to the elastic airbags; a sealing airbag is fixedly connected at the connection between the rotating cylinder and the threaded caps, the sealing airbag being in contact with the outer wall of the threaded caps; and the elastic airbags and the sealing airbags are connected through a first connecting pipe.

[0007] Preferably, the rotating cylinder includes a first rotating cylinder, a first rotating ring, an intermediate rotating cylinder, a second rotating ring, and a second rotating cylinder. The first rotating ring is rotatably connected between the first rotating cylinder and the intermediate rotating cylinder, and the second rotating ring is rotatably connected between the intermediate rotating cylinder and the second rotating cylinder. Two threaded caps are slidably connected to one end of the first rotating cylinder and the second rotating cylinder, respectively. Locking blocks are fixedly connected to both sides of the first rotating ring and to the intermediate rotating cylinder and the first rotating cylinder, respectively, by bolts. The second rotating cylinder and the intermediate rotating cylinder are fixedly connected by a connecting rod.

[0008] Furthermore, limiting strips are symmetrically fixedly connected to the outer walls of both threaded caps, and the limiting strips are slidably connected to the corresponding first and second rotating cylinders respectively.

[0009] To improve the sealing between the threaded cap and the external water pipe and connecting pipe, both threaded caps are further fixedly connected to a liquid storage tank on the outside of the rotating cylinder. The liquid storage tank is filled with sealant, and a drain pipe is fixedly connected to the liquid storage tank. The end of the drain pipe away from the liquid storage tank is fixedly connected to the threaded cap, and the drain pipe penetrates into the threaded cap.

[0010] To facilitate the extrusion of sealant, the elastic airbag is further connected to the liquid storage cylinder via a second connecting pipe, and a squeezing block is slidably connected in the liquid storage cylinder. The second connecting pipe is a flexible hose.

[0011] To further enhance the protection of the meter dial, an air storage cylinder is fixedly connected to the water meter body. The air storage cylinder contains protective gas, and a first air outlet pipe and a second air outlet pipe are fixedly connected to the air storage cylinder. The end of the second air outlet pipe away from the air storage cylinder is fixedly connected to the meter dial of the water meter body, and the second air outlet pipe is connected to the inside of the meter dial. A first overflow valve is installed on the first air outlet pipe.

[0012] To facilitate the filling of protective gas into the rotating cylinder and dial during the installation of the water meter body, the air storage cylinder has a rectangular cross-section. A sliding block with the same cross-section as the air storage cylinder is slidably connected in the air storage cylinder. A lead screw is fixedly connected to one end of the sliding block. A threaded sleeve is rotatably connected to the air storage cylinder. The lead screw is threadedly connected to the threaded sleeve. A gear is fixedly connected to the threaded sleeve. A gear ring is fixedly connected to the inner wall of the first rotating ring, and the gear ring meshes with the gear.

[0013] To increase the content of protective gas in the rotating cylinder, the slider further divides the gas storage cylinder into a first chamber and a second chamber. The first and second exhaust pipes are connected to the first chamber. One end of the gas storage cylinder is fixedly connected to an inlet pipe and an exhaust pipe. The inlet pipe and the exhaust pipe are connected to the second chamber. The exhaust pipe leads to the outside of the rotating cylinder.

[0014] Furthermore, an inflation tube is fixedly connected to the second rotating ring, with one end of the inflation tube away from the second rotating ring leading to the first chamber, and the other end of the exhaust tube away from the air storage cylinder is fixedly connected to the second rotating ring.

[0015] A method for using an antimagnetic induction water meter mainly includes the following steps:

[0016] S1. By rotating the rotating cylinder, the threaded caps at both ends of the rotating cylinder are simultaneously driven to rotate and move away from each other, so that the water meter body is threaded onto the external water pipes on both sides of the rotating cylinder through the threaded caps.

[0017] S2. When the threaded cap is threaded onto the external water pipe, the elastic air bladder is squeezed by the extrusion ring to inflate the sealing air bladder and the liquid storage cylinder, so that the sealing air bladder fills the gap between the first rotating cylinder and the second rotating cylinder, and sealant is sprayed onto the connecting pipe and the outer wall of the external water pipe.

[0018] S3. While the rotating cylinder is rotating, the rotating cylinder drives the lead screw to push the slider plug in the air storage cylinder to slide and squeeze the protective gas in the air storage cylinder, so that the protective gas is filled into the dial and the rotating cylinder, thereby completing the installation of the water meter body.

[0019] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: The present invention drives the threaded caps at both ends of the rotating cylinder to be threaded onto the external water pipe by rotating the rotating cylinder, thereby eliminating the need to tighten the threaded caps at both ends of the water meter body one by one, thus speeding up the installation efficiency. At the same time, the water meter body is located inside the rotating cylinder, and the threaded caps are sealed by the sealing air bladder and the sealant in the liquid storage tank, which can prevent rainwater from entering the rotating cylinder and corroding the water meter body. In addition, protective gas is injected into the rotating cylinder and the dial during the installation of the water meter body to further improve the protection effect of the water meter body.

[0020] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, as part of this invention, are provided to further illustrate the invention. The illustrative embodiments and descriptions of the invention are used to explain the invention, but do not constitute an undue limitation thereof. Clearly, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0022] In the attached diagram:

[0023] Figure 1 This is a schematic diagram of the structure of an antimagnetic induction water meter proposed in this invention;

[0024] Figure 2 This invention proposes an antimagnetic induction water meter. Figure 1 Schematic diagram of the structure at point A;

[0025] Figure 3 This invention proposes an antimagnetic induction water meter. Figure 1 Schematic diagram of the structure at point B;

[0026] Figure 4 This invention proposes an antimagnetic induction water meter. Figure 3 Schematic diagram of the structure at point C;

[0027] Figure 5 This is a schematic diagram of the limiting strip and sealing airbag of an antimagnetic induction water meter proposed in this invention;

[0028] Figure 6 This invention proposes an antimagnetic induction water meter. Figure 2 A schematic diagram of the structure at point D.

[0029] In the diagram: 1. Water meter body; 10. Dial; 100. Connecting pipe; 1001. Limiting threaded ring; 11. First rotating cylinder; 111. First rotating ring; 112. Air storage tank; 1121. First chamber; 1122. Second chamber; 1123. First air outlet pipe; 1124. Second air outlet pipe; 1125. Air inlet pipe; 1126. Exhaust pipe; 1127. Air filling pipe; 113. Threaded sleeve; 114. Lead screw; 115. Gear; 116. 117. Sliding plug; 118. Gear ring; 119. Locking block; 12. Bolt; 13. Intermediate rotating cylinder; 14. Connecting rod; 15. Second rotating ring; 16. Second rotating cylinder; 17. Threaded cap; 18. Limiting strip; 19. Squeezing ring; 10. Elastic airbag; 112. Sealing airbag; 13. First connecting pipe; 143. Liquid storage cylinder; 144. Squeezing block; 15. Second connecting pipe; 16. Drain pipe; 17. Rotating cylinder; 18. External water pipe.

[0030] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] Example 1:

[0033] Reference Figures 1-6A type of antimagnetic induction water meter includes a water meter body 1, a rotating cylinder 2, and an external water pipe 3. The rotating cylinder 2 is rotatably mounted on the water meter body 1, and the water meter body 1 is located inside the rotating cylinder 2. Connecting pipes 100 are fixedly connected to both ends of the water meter body 1. Threaded caps 14 are fitted onto the connecting pipes 100 at both ends of the water meter body 1. The threaded caps 14 are rotatably connected to the connecting pipes 100 and can also slide on the connecting pipes 100. The outer wall of the threaded caps 14 is slidably connected to the rotating cylinder 2. A limiting threaded ring 1001 is fixedly connected to one end of the connecting pipe 100, and the threaded caps 14 are threadedly connected to the limiting threaded ring 1001. At one end of the water pipe 3, there is also a compression ring 141 fixedly connected to one end of the threaded cap 14. The compression ring 141 is located inside the rotating cylinder 2. Elastic airbags 142 are fixedly connected to the inner walls of both ends of the rotating cylinder 2. The compression ring 141 corresponds to the elastic airbags 142. A sealing airbag 143 is fixedly connected at the connection between the rotating cylinder 2 and the threaded cap 14. The sealing airbag 143 is in contact with the outer wall of the threaded cap 14. The elastic airbag 142 and the sealing airbag 143 are connected through a first connecting pipe 144. The rotating cylinder 2 includes a first rotating cylinder 11, a first rotating ring 111, an intermediate rotating cylinder 12, a second rotating ring 122, and a second rotating cylinder 13. The first rotating ring 111... 11 is rotatably connected between the first rotating cylinder 11 and the intermediate rotating cylinder 12. The second rotating ring 122 is rotatably connected between the intermediate rotating cylinder 12 and the second rotating cylinder 13. Two threaded caps 14 are slidably connected to one end of the first rotating cylinder 11 and the second rotating cylinder 13, respectively. Locking blocks 118 are fixedly connected to both sides of the first rotating ring 111 and to the intermediate rotating cylinder 12 and the first rotating cylinder 11, respectively, by bolts 119. The locking blocks 118 on the first rotating ring 111 are threadedly locked to the intermediate rotating cylinder 12 and the first rotating cylinder 11, respectively. The second rotating cylinder 13 and the intermediate rotating cylinder 12 are fixedly connected by a connecting rod 121. The outer walls of the two threaded caps 14 are symmetrically fixed. A limiting strip 140 is connected to the corresponding first rotating cylinder 11 and second rotating cylinder 13 respectively; two threaded caps 14 are fixedly connected to liquid storage cylinders 145 on the outer side of the rotating cylinder 2, the liquid storage cylinders 145 are filled with sealant, and a drain pipe 148 is fixedly connected to the liquid storage cylinder 145. The end of the drain pipe 148 away from the liquid storage cylinder 145 is fixedly connected to the threaded cap 14, and the drain pipe 148 passes through the threaded cap 14; the elastic airbag 142 is connected to the liquid storage cylinder 145 through a second connecting pipe 147, and a squeezing block 146 is slidably connected in the liquid storage cylinder 145. The second connecting pipe 147 is a flexible tube.

[0034] When using this device, if the water meter body 1 needs to be installed, the water meter body 1, together with the rotating cylinder 2, is placed between two external water pipes 3, with one end of each external water pipe 3 abutting against the connecting pipes 100 at both ends of the water meter body 1, thus clamping the water meter body 1 between the two external water pipes 3. Then, the rotating cylinder 2 is rotated, causing the threaded caps 14 at both ends to rotate. Since the threaded caps 14 at both ends of the rotating cylinder 2 are threadedly connected to the limiting threaded rings 1001 at both ends of the water meter body 1, and the water meter body 1 is clamped between the two external water pipes 3, the water meter body 1 will not move with the water meter. As the rotating cylinder 2 rotates, the threaded cap 14, due to its threaded connection with the limiting threaded ring 1001, slides on the connecting pipe 100 in a direction away from the end of the rotating cylinder 2. This causes the threaded caps 14 at both ends of the rotating cylinder 2 to move away from each other when the rotating cylinder 2 rotates, and are threadedly connected to one end of the external water pipe 3 under the rotation of the rotating cylinder 2. This allows the two ends of the water meter body 1 to be connected to the external water pipe 3 when the rotating cylinder 2 rotates, thus eliminating the need to tighten the threaded caps 14 at both ends of the water meter body 1 one by one, thereby speeding up the installation efficiency.

[0035] Reference Figure 3 While rotating the rotating cylinder 2, the threaded cap 14 moves away from the rotating cylinder 2. The threaded cap 14 drives the compression ring 141 to slide on the connecting pipe 100 and compresses the elastic airbag 142. After being compressed, the gas inside the elastic airbag 142 is filled into the sealing airbag 143 through the first connecting pipe 144. The sealing airbag 143 expands and fits tightly against the outer wall of the threaded cap 14. Both the sealing airbag 143 and the elastic airbag 142 are annular, so that the sealing airbag 143 fits tightly against the threaded cap 14. This fills the gaps between the threaded caps 14 at both ends of the rotating cylinder 2 and the first rotating cylinder 11 and the second rotating cylinder 13, preventing rainwater from entering the rotating cylinder 2.

[0036] While the elastic airbag 142 is being compressed, some of the gas inside the elastic airbag 142 is injected into the liquid storage cylinder 145 through the second connecting pipe 147, pushing the squeezing block 146 in the liquid storage cylinder 145. The squeezing block 146 pushes the sealant in the liquid storage cylinder 145. The drain pipe 148 is equipped with a second overflow valve. When the sealant is pushed by the squeezing block 146, the sealant breaks through the second overflow valve and is discharged from the end of the drain pipe 148. Part of the sealant is sprayed onto the outer wall of the connecting pipe 100, and the other part... The sealant is sprayed onto the outer wall of the external water pipe 3 during the sliding of the threaded cap 14, and sprays around the entire surface as the threaded cap 14 rotates. When the threaded cap 14 is threaded onto the external water pipe 3, the sealant fills the gaps between the threaded cap 14, the connecting pipe 100, and the external water pipe 3, improving the stability of the connection between the water meter body 1 and the external water pipe 3. It also improves the sealing performance between the threaded cap 14 and the external water pipe 3, preventing water from entering the rotating cylinder 2 and enhancing the protection of the water meter body 1.

[0037] Example 2:

[0038] Reference Figure 2 and Figure 6 A new type of antimagnetic induction water meter, basically the same as in Embodiment 1, but with the following further features: a dial 10 is mounted on the water meter body 1, and an air storage cylinder 112 is fixedly connected to the water meter body 1. The air storage cylinder 112 contains a protective gas, which can be nitrogen. A first air outlet pipe 1123 and a second air outlet pipe 1124 are fixedly connected to the air storage cylinder 112. The end of the second air outlet pipe 1124 away from the air storage cylinder 112 is fixedly connected to the dial 10, and the second air outlet pipe 1124 is connected to the inside of the dial 10. A first overflow valve is installed on 123; the cross-section of the air storage cylinder 112 is rectangular, and a slider plug 116 with the same shape as the cross-section of the air storage cylinder 112 is slidably connected in the air storage cylinder 112. A lead screw 114 is fixedly connected to one end of the slider plug 116. A threaded sleeve 113 is rotatably connected to the air storage cylinder 112. The lead screw 114 is threadedly connected to the threaded sleeve 113. A gear 115 is fixedly connected to the threaded sleeve 113. A gear ring 117 is fixedly connected to the inner wall of the first rotating ring 111. The gear ring 117 meshes with the gear 115.

[0039] Because the first rotating ring 111 is fixedly connected to the first rotating cylinder 11 and the intermediate rotating cylinder 12 by bolts 119 respectively, when the rotating cylinder 2 is manually rotated, the first rotating ring 111 will rotate synchronously with the rotating cylinder 2. When the first rotating ring 111 rotates, it drives the gear ring 117 to rotate. Since the water meter body 1 does not rotate with the rotating cylinder 2, when the gear ring 117 rotates, it will mesh and drive the gear 115 to rotate. When the gear 115 rotates, it drives the threaded sleeve 113 to rotate. When the threaded sleeve 113 rotates, it drives the lead screw 114 to slide in the air storage cylinder 112 and push the slider plug. The protective gas in the gas storage cylinder 112 is compressed by the sliding block 116. After being compressed by the sliding block 116, the protective gas is first injected into the dial 10 of the water meter body 1 through the second gas outlet pipe 1124. A fan-shaped metal pointer is connected in the dial 10. When the protective gas is injected, the protective effect on the fan-shaped metal pointer can be improved, oxidation can be slowed down, the service life of the fan-shaped metal pointer can be extended, and the oxidation of the fan-shaped metal pointer can be avoided, which would affect the accuracy of the magnetic field sensing device in detecting the fan-shaped metal pointer, thereby improving the accuracy of the water meter body 1 in monitoring the liquid volume.

[0040] After the protective gas is filled into the dial 10, the remaining protective gas in the gas storage cylinder 112 is filled into the rotating cylinder 2 through the first gas outlet pipe 1123. Since the water meter body 1 is located in the rotating cylinder 2, when the rotating cylinder 2 is filled with protective gas, it can slow down the oxidation rate of the surface of the water meter body 1 and extend the service life of the water meter body 1.

[0041] Simultaneously, due to the influence of the sealing airbag 143 and the sealant, the leakage of protective gas inside the rotating cylinder 2 can be prevented, thus extending the protection time of the protective gas on the water meter body 1 and the dial 10.

[0042] Example 3:

[0043] Reference Figure 2 and Figure 6 A type of antimagnetic induction water meter, which is basically the same as that in Embodiment 2, but further: the slider plug 116 divides the air storage cylinder 112 into a first chamber 1121 and a second chamber 1122. The first air outlet pipe 1124 and the second air outlet pipe 1123 are connected to the first chamber 1121. One end of the air storage cylinder 112 is fixedly connected to an air inlet pipe 1125 and an air outlet pipe 1126. The air inlet pipe 1125 and the air outlet pipe 1126 are connected to the second chamber 1122. The air outlet pipe 1126 leads to the outside of the rotating cylinder 2.

[0044] When the lead screw 114 pushes the slider plug 116, the protective gas in the gas storage cylinder 112 is first injected into the dial 10 through the second gas outlet pipe 1124. When the slider plug 116 slides, the other gas in the rotating cylinder 2 is first drawn into the second chamber 1122 through the air inlet pipe 1125. This avoids the gas in the rotating cylinder 2 from mixing with the protective gas when the protective gas is injected into the rotating cylinder 2 through the second gas outlet pipe 1124, thus avoiding a reduction in the content of the protective gas and improving the protective effect of the protective gas on the water meter body 1.

[0045] Example 4:

[0046] Reference Figure 2 A type of antimagnetic induction water meter, which is basically the same as that in embodiment 3, but further: an air inlet pipe 1127 is fixedly connected to the second rotating ring 122, the end of the air inlet pipe 1127 away from the second rotating ring 122 leads to the first chamber 1121, and the end of the exhaust pipe 1126 away from the air storage cylinder 112 is fixedly connected to the second rotating ring 122.

[0047] After prolonged use, once the protective gas in the rotating cylinder 2 and the dial 10 has leaked out, the bolt 119 is first unscrewed, the first rotating ring 111 is reversed, and the screw 114 is driven to move the slider plug 116 away from the first vent pipe 1123. During the movement of the slider plug 116, the gas in the second chamber 1122 is discharged from the rotating cylinder 2 through the exhaust pipe 1126.

[0048] Then, by connecting the external inflation pipe to the inflation pipe 1127, protective gas is injected into the air storage cylinder 112. It should be noted that one-way valves are provided in the inflation pipe 1127, the air inlet pipe 1125, and the exhaust pipe 1126.

[0049] It should be understood that since the second rotating ring 122 rotates between the second rotating cylinder 13 and the intermediate rotating cylinder 12, when the rotating cylinder 2 rotates, the second rotating ring 122 can remain stationary with the water meter body 1 and does not rotate with the rotating cylinder 2. Therefore, the second rotating ring 122 will not rotate with the rotating cylinder 2, which would cause the air filling pipe 1127 and the exhaust pipe 1126 to become entangled.

[0050] Example 5:

[0051] Reference Figures 1-6 A method for using an antimagnetic induction water meter mainly includes the following steps:

[0052] S1. By rotating the rotating cylinder 2, the threaded caps 14 at both ends of the rotating cylinder 2 are simultaneously driven to rotate and move away from each other, so that the water meter body 1 is threaded onto the external water pipes 3 on both sides of the rotating cylinder 2 through the threaded caps 14.

[0053] S2. When the threaded cap 14 is threaded onto the external water pipe 3, the elastic air bladder 142 is squeezed by the compression ring 141 to inflate the sealing air bladder 143 and the liquid storage cylinder 145, so that the sealing air bladder 143 fills the gap between the first rotating cylinder 11 and the second rotating cylinder 13, and sealant is sprayed onto the connecting pipe 100 and the outer wall of the external water pipe 3.

[0054] S3. While rotating the rotating cylinder 2, the rotating cylinder 2 drives the lead screw 114 to push the slider plug 116 to slide in the air storage cylinder 112 and squeeze the protective gas in the air storage cylinder 112, so that the protective gas is filled into the dial 10 and the rotating cylinder 2, thereby completing the installation of the water meter body 1.

[0055] This invention drives the threaded caps 14 at both ends of the rotating cylinder 2 to be threaded onto the external water pipe 3 by rotating the rotating cylinder 2, thereby eliminating the need to tighten the threaded caps 14 at both ends of the water meter body 1 one by one, thus speeding up the installation efficiency. At the same time, the water meter body 1 is located inside the rotating cylinder 2, and the threaded caps 14 are sealed by the sealing airbag 143 and the sealant in the liquid storage tank 145, which can prevent rainwater from entering the rotating cylinder 2 and corroding the water meter body 1. In addition, protective gas is injected into the rotating cylinder 2 and the dial 10 during the installation of the water meter body 1 to further improve the protection effect of the water meter body 1.

[0056] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0057] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A magnetically inductive water meter, comprising a water meter body (1), a rotating cylinder (2), and an external water pipe (3), characterized in that, The rotating cylinder (2) is rotatably mounted on the water meter body (1), the water meter body (1) is located inside the rotating cylinder (2), and the two ends of the water meter body (1) are fixedly connected to connecting pipes (100). Threaded caps (14) are fitted on the connecting pipes (100) at both ends of the water meter body (1). The outer wall of the threaded caps (14) is slidably connected to the rotating cylinder (2). One end of the connecting pipe (100) is fixedly connected to a limiting threaded ring (1001), and the threaded caps (14) are threadedly connected to the limiting threaded ring (1001). The threaded caps (14) are threadedly connected to one end of the external water pipe (3), and also include: A compression ring (141) is fixedly connected to one end of the threaded cap (14). The compression ring (141) is located inside the rotating cylinder (2). Elastic airbags (142) are fixedly connected to the inner walls of both ends of the rotating cylinder (2). The compression ring (141) corresponds to the elastic airbag (142). A sealing airbag (143) is fixedly connected at the connection between the rotating cylinder (2) and the threaded cap (14). The sealing airbag (143) is in contact with the outer wall of the threaded cap (14). The elastic airbag (142) and the sealing airbag (143) are connected through a first connecting pipe (144). The rotating cylinder (2) includes a first rotating cylinder (11), a first rotating ring (111), an intermediate rotating cylinder (12), a second rotating ring (122), and a second rotating cylinder (13). The first rotating ring (111) is rotatably connected between the first rotating cylinder (11) and the intermediate rotating cylinder (12). The second rotating ring (122) is rotatably connected between the intermediate rotating cylinder (12) and the second rotating cylinder (13). Two threaded caps (14) are slidably connected to one end of the first rotating cylinder (11) and the second rotating cylinder (13). Locking blocks (118) are fixedly connected to both sides of the first rotating ring (111) and to the intermediate rotating cylinder (12) and the first rotating cylinder (11). The locking blocks (118) on the first rotating ring (111) are threadedly locked to the intermediate rotating cylinder (12) and the first rotating cylinder (11) respectively by bolts (119). The second rotating cylinder (13) and the intermediate rotating cylinder (12) are fixedly connected by a connecting rod (121). Both of the threaded caps (14) are symmetrically fixedly connected to the outer walls of the two caps (14), and the limiting strips (140) are slidably connected to the corresponding first rotating cylinder (11) and second rotating cylinder (13).

2. The antimagnetic induction water meter according to claim 1, characterized in that: Both of the threaded caps (14) are fixedly connected to a liquid storage cylinder (145) on the outside of the rotating cylinder (2). The liquid storage cylinder (145) is filled with sealant. A drain pipe (148) is fixedly connected to the liquid storage cylinder (145). One end of the drain pipe (148) away from the liquid storage cylinder (145) is fixedly connected to the threaded cap (14). The drain pipe (148) penetrates into the threaded cap (14).

3. The antimagnetic induction water meter according to claim 2, characterized in that: The elastic airbag (142) and the liquid storage cylinder (145) are connected by a second connecting pipe (147). A squeezing block (146) is slidably connected in the liquid storage cylinder (145), and the second connecting pipe (147) is a flexible tube.

4. The antimagnetic induction water meter according to claim 1, characterized in that: A gas storage cylinder (112) is fixedly connected to the water meter body (1). The gas storage cylinder (112) is filled with protective gas. A first gas outlet pipe (1123) and a second gas outlet pipe (1124) are fixedly connected to the gas storage cylinder (112). The end of the second gas outlet pipe (1124) away from the gas storage cylinder (112) is fixedly connected to the dial (10) of the water meter body (1). The second gas outlet pipe (1124) is connected to the inside of the dial (10). A first overflow valve is installed on the first gas outlet pipe (1123).

5. A diamagnetic induction water meter according to claim 4, characterized in that: The gas storage cylinder (112) has a rectangular cross-section. A sliding block (116) with the same cross-section as the gas storage cylinder (112) is slidably connected in the gas storage cylinder (112). A lead screw (114) is fixedly connected to one end of the sliding block (116). A threaded sleeve (113) is rotatably connected to the gas storage cylinder (112). The lead screw (114) is threadedly connected to the threaded sleeve (113). A gear (115) is fixedly connected to the threaded sleeve (113). A gear ring (117) is fixedly connected to the inner wall of the first rotating ring (111). The gear ring (117) meshes with the gear (115).

6. The antimagnetic induction water meter according to claim 5, characterized in that: The sliding block (116) divides the air storage cylinder (112) into a first chamber (1121) and a second chamber (1122). The first air outlet pipe (1123) and the second air outlet pipe (1124) are connected to the first chamber (1121). One end of the air storage cylinder (112) is fixedly connected to an air inlet pipe (1125) and an air outlet pipe (1126). The air inlet pipe (1125) and the air outlet pipe (1126) are connected to the second chamber (1122). The air outlet pipe (1126) leads to the outside of the rotating cylinder (2).

7. A diamagnetic induction water meter according to claim 6, characterized in that: An inflation tube (1127) is fixedly connected to the second rotating ring (122). The end of the inflation tube (1127) away from the second rotating ring (122) leads to the first chamber (1121). The end of the exhaust tube (1126) away from the air storage cylinder (112) is fixedly connected to the second rotating ring (122).

8. A method of using an antimagnetic induction water meter as described in claim 7, characterized in that, Includes the following steps: S1. By rotating the rotating cylinder (2), the threaded caps (14) at both ends of the rotating cylinder (2) are driven to rotate and move away from each other, so that the water meter body (1) is threaded onto the external water pipes (3) on both sides of the rotating cylinder (2) through the threaded caps (14). S2. When the threaded cap (14) is threaded onto the external water pipe (3), the elastic air bladder (142) is squeezed by the compression ring (141) to inflate the sealing air bladder (143) and the liquid storage cylinder (145), so that the sealing air bladder (143) fills the gap between the first rotating cylinder (11) and the second rotating cylinder (13), and sealant is sprayed onto the connecting pipe (100) and the outer wall of the external water pipe (3); S3. While rotating the rotating cylinder (2), the rotating cylinder (2) drives the lead screw (114) to push the slider plug (116) to slide in the air storage cylinder (112) and squeeze the protective gas in the air storage cylinder (112), so that the protective gas is filled into the dial (10) and the rotating cylinder (2), thereby completing the installation of the water meter body (1).

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