High-sealing low-error anti-slip water meter

Abstract

The utility model discloses a high-sealing low-error anti-slip water meter which comprises a detection mechanism, first flanges are fixedly connected to the two sides of the detection mechanism, and second flanges are arranged on the sides, away from the detection mechanism, of the first flanges. The water meter is excellent in measurement error and anti-idling effect, the anti-backflow pipes on the left side and the right side of the water meter can effectively prevent water flow from flowing back, when the water flow flows forwards, water pressure pushes the rubber pad and the supporting disc to enable the water flow to pass through gaps, if the water flow flows back, the water pressure enables the rubber pad and the fixing ring to be attached more tightly, backflow is prevented, and the water meter is convenient to use. And the metering error caused by idling is reduced. In the aspect of sealing performance, the adjacent sides of the first flange and the second flange are provided with the annular grooves, the sealing rings are arranged in the annular grooves, the protruding parts of the sealing rings are inserted into the annular grooves, the contact area is greatly increased, the occurrence probability of leakage channels is reduced, the sealing performance is greatly improved, and the device has the advantages of being small in measurement error, good in anti-idling effect and good in sealing performance.

Description

Technical Field

[0001] This utility model relates to the field of water meter technology, specifically a high-sealing, low-error water meter that prevents dry running. Background Technology

[0002] The phenomenon of water meters spinning idly is particularly prominent in high-rise residential buildings, causing users to incur extra water bills of tens or hundreds of tons, which is very distressing.

[0003] The reasons why a water meter may run dry include:

[0004] 1. When a new water meter is installed or the water meter is moved, the water in the water meter pipe is drained. After installation and water supply, the air in the pipe is forced by the water flow pressure to the various blind ends of the pipe, forming "compressed air." There is an interface between the air and water, and at this time, the pressure difference between the two sides of the interface is zero. However, when the water pressure changes, a certain pressure difference is formed between the two sides of the interface, and the air-water balance is disrupted. In the process of reaching a new pressure balance, the volume of air will change, expanding or contracting. This expansion or contraction of air volume will cause the water in the water pipe to flow. Modern water meters, especially electronically controlled water meters, are highly sensitive and measure both inflow and outflow. Thus, the phenomenon of "water meter idling" occurs.

[0005] Second, backflow of hot water from water heaters, solar water heaters, and toilet storage water into the water supply network. This backflow causes water pollution and unsanitary conditions, which can affect users' health and is unacceptable to them.

[0006] Third, unstable water supply pressure is a major cause of water meter idling. Because water meters are highly sensitive, especially in high-rise buildings with secondary pressurized water supply, water exhibits a certain degree of compressibility due to the relatively high pressure in the pipes. When the pressure in the pipe network fluctuates, it causes the water volume to expand and compress. When the pressure increases, the water volume in the pipe downstream of the meter is compressed, resulting in a small amount of water passing through the meter and causing it to spin. When the pressure decreases, the compressed water is released, again resulting in a small amount of water passing through the meter. Therefore, every time the water pressure fluctuates, the water meter will spin idly. Frequent water pressure fluctuations will cause the user's water meter to spin idly many times, leading to a larger error in the measured water consumption.

[0007] Therefore, it is necessary to redesign and modify existing water meters to effectively prevent them from having large measurement errors and being prone to idling. Utility Model Content

[0008] To address the problems mentioned in the background art, the purpose of this utility model is to provide a high-sealing, low-error anti-dry-running water meter, which has the advantages of small measurement error, good anti-dry-running effect, and good sealing performance.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a high-sealing, low-error, anti-dry-running water meter, comprising a detection mechanism, with first flanges fixedly connected to both sides of the detection mechanism, and a second flange provided on the side of the first flange away from the detection mechanism. An annular groove is provided on the adjacent side of both the first and second flanges, and a sealing ring is provided inside the annular groove. The sealing ring is respectively fitted to the first and second flanges. The first and second flanges are fixedly connected by bolts and nuts. Backflow prevention pipes are fixedly connected to the side of the second flanges away from the detection mechanism on both sides. A fixing ring is fixedly connected to the inner wall of the backflow prevention pipe. The wall is provided with several grooves, which are evenly distributed in a ring inside the anti-backflow pipe. A slider is slidably connected inside the groove, and a support plate is fixedly connected to the surface of the slider. A rubber pad is fixedly connected to the left side of the support plate, and the left side of the rubber pad fits against the right side of the fixing ring. A fixing frame is fixedly connected inside the anti-backflow pipe, and a movable rod is slidably connected inside the fixing frame. The left side of the movable rod is fixedly connected to the right side of the support plate, and a limit plate is fixedly connected to the right side of the movable rod. A tension spring is fixedly connected to the right side of the fixing frame, and the end of the tension spring away from the fixing frame is fixedly connected to the limit plate. The tension spring is made of stainless steel.

[0010] As a preferred embodiment of this utility model, the second flange is provided with a slot on both the front and rear sides away from the detection mechanism. A positioning block is provided inside the slot. A cylinder is rotatably connected to the right side of the positioning block on the left side, and a threaded rod is fixedly connected to the left side of the positioning block on the right side. The cylinder and the threaded rod are threadedly connected.

[0011] As a preferred embodiment of this invention, anti-slip strips are fixedly connected to the surface of the cylinder, and the number of anti-slip strips is several, which are evenly distributed in a ring on the surface of the cylinder.

[0012] In a preferred embodiment of this invention, a bearing is fixedly connected inside the positioning block, with the outer ring of the bearing fixedly connected to the positioning block and the inner ring of the bearing fixedly connected to the cylinder.

[0013] As a preferred embodiment of the present invention, a protective ring is provided on the surface of the first flange, and the protective ring is respectively attached to the sealing ring and the second flange.

[0014] As a preferred embodiment of this invention, a third flange is fixedly connected to the side of the anti-backflow pipe away from the detection mechanism.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model exhibits superior performance in terms of measurement error and anti-dry running effect. The anti-backflow pipes on both sides of the water meter effectively prevent water backflow. When the water flows in the forward direction, the water pressure pushes the rubber pad and support plate, allowing the water to pass through the gap. If the water flows back, the water pressure will make the rubber pad and the fixing ring fit more tightly, preventing backflow. This not only eliminates the backflow of stored water and suppresses the expansion and contraction of "compressed air" in the water pipe, reducing the possibility of the water meter running dry, but also reduces the measurement error caused by dry running. In terms of sealing, annular grooves are set on the adjacent sides of the first and second flanges, and a sealing ring is placed inside. The protruding part of the sealing ring is inserted into the annular groove, which greatly increases the contact area. According to the pressure formula, when the sealing pressure is constant, the pressure per unit area decreases, reducing the probability of leakage channels and greatly improving the sealing performance. This device has the advantages of small measurement error, good anti-dry running effect, and good sealing performance.

[0017] 2. This utility model, through the arrangement of a slot, positioning block, cylinder, and threaded rod, allows the operator to place the positioning block into the slot and then rotate the cylinder. Since the cylinder is threadedly connected to the threaded rod, the threaded rod moves to the left when the cylinder rotates, thereby driving the positioning block on the right to move to the left. Based on the relationship between action and reaction forces, the positioning blocks on both sides exert a force that brings them closer together, thereby causing the second flange on both sides to come into close contact with the first flange, thus providing auxiliary fixation for the first and second flanges. This improves the sealing effect of the device, reduces the risk of leakage due to loose connections, ensures the long-term stable operation of the water meter in complex operating environments, and reduces the probability of failures caused by sealing problems. The first and second flanges can also be fixed together with bolts and nuts. The diameter of the rubber gasket is larger than the inner diameter of the fixing ring and smaller than the outer diameter of the fixing ring. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a front sectional view of the structure of the anti-backflow pipe, first flange, second flange, sealing ring and third flange of this utility model;

[0020] Figure 3 This utility model Figure 1 Enlarged schematic diagram of the structure at point A in the middle;

[0021] Figure 4 This utility model Figure 2 Enlarged schematic diagram of the structure at point B.

[0022] In the diagram: 1. Testing mechanism; 2. First flange; 3. Second flange; 4. Annular groove; 5. Sealing ring; 6. Anti-backflow pipe; 7. Slide groove; 8. Sliding block; 9. Support plate; 10. Rubber pad; 11. Fixing ring; 12. Fixing frame; 13. Movable rod; 14. Limiting plate; 15. Tension spring; 16. Positioning block; 17. Cylinder; 18. Threaded rod; 19. Anti-slip strip; 20. Protective ring; 21. Third flange. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figures 1 to 4 As shown, a high-sealing, low-error, anti-dry-running water meter includes a detection mechanism 1. First flanges 2 are fixedly connected to both sides of the detection mechanism 1. A second flange 3 is provided on the side of the first flange 2 away from the detection mechanism 1. An annular groove 4 is provided on the adjacent side of both the first flange 2 and the second flange 3. A sealing ring 5 is provided inside the annular groove 4, and the sealing ring 5 is respectively fitted to the first flange 2 and the second flange 3. The first flange 2 and the second flange 3 are fixedly connected by bolts and nuts. Backflow prevention pipes 6 are fixedly connected to the side of both second flanges 3 away from the detection mechanism 1. A fixing ring 11 is fixedly connected to the inner wall of the backflow prevention pipe 6. A sliding groove 7 is provided on the inner wall of the backflow prevention pipe 6, and the number of sliding grooves 7 is several. There are several grooves 7, which are evenly distributed in a ring inside the anti-backflow pipe 6. A slider 8 is slidably connected inside the groove 7. A support plate 9 is fixedly connected to the surface of the slider 8. A rubber pad 10 is fixedly connected to the left side of the support plate 9. The left side of the rubber pad 10 is in contact with the right side of the fixing ring 11. A fixing frame 12 is fixedly connected inside the anti-backflow pipe 6. A movable rod 13 is slidably connected inside the fixing frame 12. The left side of the movable rod 13 is fixedly connected to the right side of the support plate 9. A limit piece 14 is fixedly connected to the right side of the movable rod 13. A tension spring 15 is fixedly connected to the right side of the fixing frame 12. The end of the tension spring 15 away from the fixing frame 12 is fixedly connected to the limit piece 14. The tension spring 15 is made of stainless steel.

[0025] refer to Figure 1 The second flange 3 has slots on both the front and rear sides away from the detection mechanism 1. A positioning block 16 is provided inside the slot. A cylinder 17 is rotatably connected to the right side of the left positioning block 16, and a threaded rod 18 is fixedly connected to the left side of the right positioning block 16. The cylinder 17 and the threaded rod 18 are threadedly connected.

[0026] As a technical optimization of this utility model, by setting up a slot, positioning block 16, cylinder 17 and threaded rod 18, the operator can put the positioning block 16 into the slot and then rotate the cylinder 17. Since the cylinder 17 is threadedly connected to the threaded rod 18, when the cylinder 17 rotates, the threaded rod 18 moves to the left, thereby driving the positioning block 16 on the right to move to the left. According to the relationship between action and reaction forces, the positioning blocks 16 on both sides have a force that brings them closer together, thereby driving the second flange 3 on both sides to be tightly attached to the first flange 2, thereby assisting in fixing the first flange 2 and the second flange 3, thereby improving the sealing effect of the device. The first flange 2 and the second flange 3 can also be fixed together by bolts and nuts.

[0027] refer to Figure 3 Anti-slip strips 19 are fixedly connected to the surface of the cylinder 17. There are several anti-slip strips 19, which are evenly distributed in a ring on the surface of the cylinder 17.

[0028] As a technical optimization of this utility model, by setting the anti-slip strip 19, the anti-slip strip 19 can increase the friction between the operator's hand and the cylinder 17, thereby making it easier for the operator to rotate the cylinder 17.

[0029] refer to Figure 3 The positioning block 16 has a bearing fixedly connected inside, and the outer ring of the bearing is fixedly connected to the positioning block 16, while the inner ring of the bearing is fixedly connected to the cylinder 17.

[0030] As a technical optimization of this utility model, by setting the bearing, the friction between the positioning block 16 and the cylinder 17 can be reduced, thereby ensuring the stable rotation of the cylinder 17.

[0031] refer to Figure 1 The surface of the first flange 2 is provided with a protective ring 20, which is respectively attached to the sealing ring 5 and the second flange 3.

[0032] As a technical optimization of this utility model, the protective ring 20 is set on the outer surface of the first flange 2, the second flange 3 and the sealing ring 5. The protective ring 20 is made of nitrile rubber, which has excellent oil resistance, good wear resistance, water resistance and certain chemical corrosion resistance. It can maintain good performance in some weak acid and weak alkali environments. By setting the protective ring 20, on the one hand, it can assist in sealing the gap between the first flange 2 and the second flange 3 and the sealing ring 5, and on the other hand, it can reduce the oxidation or corrosion rate of the sealing ring 5 to a certain extent, thereby indirectly improving the sealing stability of the device.

[0033] refer to Figure 1 The anti-backflow pipe 6 is fixedly connected to a third flange 21 on the side away from the testing agency 1.

[0034] As a technical optimization of this utility model, by setting the third flange 21, the operator can connect the third flange 21 to the flange on the pipe surface with bolts and nuts, thereby enabling the device to be stably connected to the pipe.

[0035] The working principle and usage process of this utility model are as follows: During use, the left side of the left anti-backflow pipe 6 is the inlet, and the right side of the right anti-backflow pipe 6 is the outlet. Under water pressure, the water flow pushes the rubber pad 10 and support plate 9 inside the anti-backflow pipe 6 to the right, thereby causing the movable rod 13 and limiting plate 14 to move to the right. At this time, the tension spring 15 is stretched. When the rubber pad 10 separates from the fixing ring 11, the water flow enters the left anti-backflow pipe 6 through the gap between the rubber pad 10 and the inner wall of the anti-backflow pipe 6, and then enters the detection mechanism 1 for measurement. Similarly, when the water flows out of the right anti-backflow pipe 6, it also needs to be pushed by water pressure to separate the right rubber pad 10 from the fixing ring 11, so that the water flow inside the detection mechanism 1... The water flow can flow out through the anti-backflow pipe 6 on the right. If the water flows back, under the action of water pressure, the water will exert a force to the left on the support plate 9 and the rubber pad 10, making the rubber pad 10 stick to the fixing ring 11 more tightly, thus preventing the water from flowing back. The water can only flow in one direction. For example, when the main water supply pipe is shut off, the solar water heater, electric water heater, and toilet water storage after the meter have a one-way water flow function, thus preventing the user's stored water from flowing back. The water meter will naturally not run dry, and it also prevents unclean water stored in the toilet from contaminating the tap water. Moreover, the expansion and contraction of the "compressed air" in the water pipe is also suppressed, reducing the possibility of the water meter running dry and reducing the measurement error caused by the water meter running dry, thus reducing the measurement error.

[0036] This application utilizes the annular groove 4 and the sealing ring 5. The sealing ring 5 has a protrusion that can be inserted into the annular groove 4. The annular groove 4 and the protrusion of the sealing ring 5 can increase the sealing performance of the device. After the protrusion of the sealing ring 5 is inserted into the annular groove 4, a larger contact area is formed between the two. According to the pressure formula p = F / S, where p is the pressure, F is the force, and S is the force-bearing area, under a constant sealing pressure, an increase in the contact area will reduce the pressure per unit area, thereby reducing the possibility of leakage channels appearing on the sealing surface. At the same time, a larger contact area also means that gas or liquid needs to overcome more resistance to pass through the sealing interface, thereby improving the sealing performance.

[0037] The detection mechanism 1 in this utility model adopts widely used principles in the industry, such as electromagnetic induction or ultrasonic detection. These principles are well-known and applied in the field of water meter detection. The working method is that when water flows through the detection mechanism 1, the water flow cuts the magnetic field lines to generate an induced electromotive force, thereby driving the counting device; or the relationship between the propagation speed of ultrasonic waves in water and the water flow speed, and the flow rate is calculated by measuring the time difference of ultrasonic wave propagation, etc., to realize the detection and data output of water flow. There are many kinds of water flow detection devices on the market that utilize the above principles, which are well known to those skilled in the art, so this application will not describe them in detail.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high sealing low error anti-idling water meter comprising a detecting mechanism (1), characterized in that: The both sides of the detection mechanism (1) are fixedly connected with first flanges (2), one side of the first flange (2) away from the detection mechanism (1) is provided with a second flange (3), the adjacent side of the first flange (2) and the second flange (3) is provided with an annular groove (4), the inside of the annular groove (4) is provided with a sealing ring (5), the sealing ring (5) is attached to the first flange (2) and the second flange (3) respectively, the first flange (2) and the second flange (3) are fixedly connected through bolts and nuts, the side of the second flange (3) away from the detection mechanism (1) is fixedly connected with an anti-backflow pipe (6), the inner wall of the anti-backflow pipe (6) is fixedly connected with a fixed ring (11), the inner wall of the anti-backflow pipe (6) is provided with a plurality of sliding grooves (7), the sliding grooves (7) are evenly distributed in the anti-backflow pipe (6), the inside of the sliding groove (7) is slidably connected with a sliding block (8), the surface of the sliding block (8) is fixedly connected with a supporting disc (9), the left side of the supporting disc (9) is fixedly connected with a rubber pad (10), the left side of the rubber pad (10) is attached to the right side of the fixed ring (11), the inside of the anti-backflow pipe (6) is fixedly connected with a fixed frame (12), the inside of the fixed frame (12) is slidably connected with a movable rod (13), the left side of the movable rod (13) is fixedly connected with the right side of the supporting disc (9), the right side of the movable rod (13) is fixedly connected with a limiting sheet (14), the right side of the fixed frame (12) is fixedly connected with a tension spring (15), one end of the tension spring (15) away from the fixed frame (12) is fixedly connected with the limiting sheet (14), the tension spring (15) is made of stainless steel.

2. A high seal low error anti-aerating water meter according to claim 1, characterized in that: The front side and the rear side of the side of the second flange (3) away from the detection mechanism (1) are provided with clamping grooves, the inside of the clamping groove is provided with a positioning block (16), the right side of the left positioning block (16) is rotatably connected with a cylinder (17), the left side of the right positioning block (16) is fixedly connected with a threaded rod (18), the cylinder (17) is threadedly connected with the threaded rod (18).

3. A high seal low error freewheeling water meter according to claim 2, characterized in that: The surface of the cylinder (17) is fixedly connected with a plurality of anti-skid strips (19), the anti-skid strips (19) are evenly distributed on the surface of the cylinder (17).

4. A high seal low error freewheeling water meter according to claim 2, characterized in that: The inside of the positioning block (16) is fixedly connected with a bearing, the outer ring of the bearing is fixedly connected with the positioning block (16), and the inner ring of the bearing is fixedly connected with the cylinder (17).

5. A high seal low error freewheeling water meter according to claim 1, characterized in that: The surface of the first flange (2) is provided with a protective ring (20), the protective ring (20) is attached to the sealing ring (5) and the second flange (3) respectively.

6. A high seal low error freewheeling water meter according to claim 1, characterized in that: The side of the anti-backflow pipe (6) away from the detection mechanism (1) is fixedly connected with a third flange (21).

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