Anti-freezing water meter with anti-backflow mechanism

Abstract

The utility model discloses an anti-freezing water meter with an anti-backflow mechanism, and relates to the technical field of water meters, the anti-freezing water meter comprises a water meter base and a heat preservation cover, a water meter body is installed above the water meter base, and a first connecting disc and a second connecting disc are installed on the left side and the right side of the water meter base respectively; a water inlet pipe and a water outlet pipe are installed on the reverse sides of the first connecting disc and the second connecting disc correspondingly, and grooves are formed in the water inlet pipe and the water outlet pipe correspondingly. The anti-freezing water meter with the anti-backflow mechanism is provided with the sealing plate, when water enters the water inlet pipe, the sealing plate moves rightwards under the pressure of the water and extrudes the telescopic spring, water flow can pass through a gap between the sealing plate and the groove, when the water inlet pipe stops entering the water, stress on the sealing plate disappears, and the sealing plate moves leftwards under the action of resilience force of the telescopic spring; the inner walls of the water inlet pipe and the water outlet pipe abut against each other to prevent water in the water meter base and the water meter body from flowing back through the water inlet pipe, so that the water meter body is protected.

Description

TECHNICAL FIELD

[0001] The utility model relates to water gauge technical field, concretely is a kind of anti-freezing water gauge with anti-backflow mechanism. BACKGROUND

[0002] Water gauge is a kind of instrument for measuring water flow, mainly used to measure the water volume flowing through pipeline. The working principle of water gauge is based on the water flow meter installed inside, when water flow passes, the power of water flow will drive flow meter to rotate, and the water quantity flowing through is accurately calculated by measuring the angle or rotation speed. The method of reading water gauge is also very simple, mechanical water gauge reads by viewing the number on indicating device, while electronic water gauge directly reads the number on liquid crystal screen.

[0003] Such as the application number for 202320329166.2 a wet type anti-freezing water gauge, through the setting of anti-freezing device and heat preservation layer, it is convenient to protect water gauge body, and improve the heat preservation performance of anti-freezing device, to prevent water gauge body from freezing. But its device still has certain defects;

[0004] Anti-backflow mechanism is arranged at the position of water inlet pipe of water gauge, so that when water stops flowing, water in water gauge is easy to flow back through water inlet pipe, leading to inaccurate measurement of water gauge, and even leading to damage of water gauge.

[0005] Therefore, we propose an anti-freezing water gauge with anti-backflow mechanism to solve the problems raised in the above. UTILITY MODEL CONTENTS

[0006] The utility model aims at providing an anti-freezing water gauge with anti-backflow mechanism to solve the problem that anti-backflow mechanism is arranged at the position of water inlet pipe of water gauge in the market at present, leading to inaccurate measurement of water gauge and even damage of water gauge when water stops flowing.

[0007] To achieve the above object, the utility model provides the following technical scheme: an anti-freezing water gauge with anti-backflow mechanism, comprising a water gauge base and a heat preservation cover, a water gauge body is installed above the water gauge base, first and second connecting discs are installed on the left and right sides of the water gauge base respectively, a water inlet pipe and a water outlet pipe are installed on the reverse sides of the first and second connecting discs respectively, recesses are formed in the water inlet pipe and the water outlet pipe, positioning strips are installed on the recesses, sealing plates are installed on the left sides of the positioning strips through extension springs.

[0008] The lower part of the water meter base is provided with a heat preservation pad, the upper surface of the water meter base is provided with a limiting block on the left and right sides, a heat preservation cover is sleeved on the water meter base, the left and right sides of the heat preservation cover are provided with a limiting block, and a limiting groove is formed in the limiting block, and a limiting bolt is arranged on the first connecting disc and the second connecting disc.

[0009] The lower part of the water meter base is provided with a heat preservation pad, the upper surface of the water meter base is provided with a limiting block on the left and right sides, a heat preservation cover is sleeved on the water meter base, the left and right sides of the heat preservation cover are provided with a limiting block, and a limiting groove is formed in the limiting block, and a limiting bolt is arranged on the first connecting disc and the second connecting disc.

[0010] Preferably, the positioning strip is provided with a hollow column, the right side of the sealing plate is provided with a guide rod, the guide rod penetrates through the hollow column, and the guide rod and the hollow column are in sliding connection.

[0011] With the above structure, when the sealing plate moves left and right under force, the sealing plate can move left and right along the hollow column through the guide rod, so that the sealing plate moves left and right more stably and does not deviate.

[0012] Preferably, the sealing plate is in circular structure, and the diameter of the sealing plate is greater than that of the thin end of the water inlet pipe and less than that of the groove.

[0013] With the above structure, when water flows into the water inlet pipe, the sealing plate moves right under the pressure of water, extrudes the extension spring, the water flow can pass through the gap between the sealing plate and the groove, then pass through the water meter base and the water meter body, the water meter body measures the water flow, and finally the water flow is discharged through the water outlet pipe. When the water inlet pipe stops feeding water, the sealing plate moves left under the elastic force of the extension spring, and abuts against the inner walls of the water inlet pipe and the water outlet pipe, so that the water in the water meter base and the water meter body is prevented from flowing back through the water inlet pipe and the water outlet pipe, thereby protecting the water meter body.

[0014] Preferably, the left and right sides of the heat preservation cover are provided with clamping grooves, and the clamping grooves and the water meter base are in rectangular structure.

[0015] With the above structure, when the heat preservation cover is installed, the heat preservation cover is sleeved on the water meter base through the clamping grooves.

[0016] Preferably, the upper part of the heat preservation cover is provided with a heat preservation cover, the heat preservation cover is detachably connected with the heat preservation cover, and the heat preservation cover is located directly above the water meter body.

[0017] With the above structure, the water meter body in the heat preservation cover can be checked and maintained by opening the heat preservation cover. In the case that the water meter body is used frequently, the control valve is in a closed state, the heat preservation cover plays a role in preventing the water meter body from freezing, so that the water meter body is not easily damaged by freezing in a cold environment, and the service life of the water meter body is improved.

[0018] Preferably, the positioning block is located above the limiting block, and the upper surface of the limiting block abuts against the lower surface of the positioning block.

[0019] With the above structure, the limiting block limits the installation of the heat preservation cover, so that the heat preservation cover is sleeved on the middle part of the water meter base.

[0020] Preferably, the center line of the positioning bolt coincides with the center line of the positioning groove, and the positioning bolt is threadedly connected with the first connecting disc and the second connecting disc.

[0021] With the above structure, after the heat preservation cover is sleeved, the positioning bolts on the left and right sides are rotated, the positioning bolts move to one side of the positioning block, the positioning bolts are clamped with the positioning grooves on the positioning block, and thus the installation of the heat preservation cover is completed.

[0022] Preferably, the connecting pipe is threadedly and sealingly connected with the water inlet pipe and the water outlet pipe, the connecting pipe is located between the sealing plates on the left and right sides, and the connecting pipe is threadedly connected with the flow guide pipe assembly.

[0023] With the above structure, when the water meter body is not supplied with water for a long time, the water inlet valve can be closed, and then the control valve is opened, so that a small amount of residual water in the water inlet pipes and the water outlet pipes on the left and right sides of the water meter body is discharged through the flow guide pipe assembly, the residual water in the water inlet pipes and the water outlet pipes is prevented from repeatedly freezing in cold temperature, and the service life of the water meter body is affected, when the flow guide pipe assembly is installed, the flow guide pipe assembly is sleeved below the connecting pipe, and then the connecting pipe is rotated and moves downward, the flow guide pipe assembly is fixed, and meanwhile the sealing gasket in the connecting pipe moves downward and tightly abuts against the top end of the flow guide pipe assembly, the sealing property of the pipeline connection is improved, and the flow guide pipe assembly and the connecting pipe are convenient to disassemble.

[0024] Compared with the prior art, the utility model has the advantages that the anti-freezing water meter with the anti-backflow mechanism has the following advantages:

[0025] 1. The sealing plate is arranged, when water flows into the water inlet pipe, the sealing plate moves rightwards under the pressure of water, the water flow can pass through the gap between the sealing plate and the groove, and then pass through the water meter base and the water meter body, the water meter body measures the water flow, and finally the water flow is discharged through the water outlet pipe, when the water inlet pipe stops supplying water, the force acting on the sealing plate disappears, the sealing plate moves leftwards under the elastic force of the extension spring, and abuts against the inner wall of the water inlet pipe, so that the water in the water meter base and the water meter body is prevented from flowing back through the water inlet pipe, and the water meter body is protected.

[0026] 2、The utility model discloses a heat preservation cover is arranged, and the heat preservation cover plays the role of anti-freezing to the water meter body, so that the water meter body is not easy to freeze and be damaged in the cold environment, and the service life of the water meter body is improved.

[0027] 3、The utility model discloses a positioning bolt is arranged, and after the heat preservation cover sleeve is set up, rotates the positioning bolt of left and right sides, and the positioning bolt moves to the side of the positioning block, makes the positioning bolt with the positioning slot on the positioning block and connects, can complete the installation of heat preservation cover, and the structure is simple, and convenient to detach.

[0028] 4、The utility model discloses a flow guide pipe assembly is arranged, when the water meter body is not watered for a long time, can close the water inlet valve, and then open the control valve, and a small amount of residual water in the water inlet pipe and the water outlet pipe of water meter body left and right sides is discharged through the flow guide pipe assembly, prevents the residual water in the water inlet pipe and the water outlet pipe from repeatedly freezing in the cold temperature, and influences the service life of the water meter body. DRAWINGS

[0029] Figure 1 It is the main section structure schematic diagram of the utility model;

[0030] Figure 2 It is the main structure schematic diagram of the utility model;

[0031] Figure 3 It is the utility model Figure 1 The enlarged structure schematic diagram of A place in the utility model;

[0032] Figure 4 It is the heat preservation cover installation structure schematic diagram of the utility model;

[0033] Figure 5 It is the utility model Figure 4 The enlarged structure schematic diagram of B place in the utility model;

[0034] Figure 6 It is the sealing plate and the positioning strip position structure schematic diagram of the utility model;

[0035] Figure 7 It is the utility model Figure 1 The enlarged structure schematic diagram of C place in the utility model.

[0036] In the drawing: 1, water meter base; 2, water meter body; 3, first connecting disc; 4, second connecting disc; 5, water inlet pipe; 6, water outlet pipe; 7, recess; 8, positioning strip; 9, hollow column; 10, extension spring; 11, sealing plate; 12, guide rod; 13, heat preservation pad; 14, limit block; 15, heat preservation cover; 16, connecting groove; 17, heat preservation cover; 18, positioning block; 19, positioning slot; 20, positioning bolt; 21, connecting pipe; 22, sealing groove; 23, sealing pad; 24, flow guide pipe assembly; 25, control valve. CONCRETE IMPLEMENTATION

[0037] The technical solutions in the embodiments of the utility model will be apparently and completely described in connection with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor fall within the scope of protection of the utility model.

[0038] Please refer to Figures 1-7 The utility model provides a kind of technical scheme: a kind of anti-freezing water meter with anti-reflux mechanism, including water meter base 1, water meter body 2, first connecting disc 3, second connecting disc 4, water inlet pipe 5, water outlet pipe 6, recess 7, positioning strip 8, hollow column 9, extension spring 10, sealing plate 11, guide rod 12, heat preservation pad 13, limit block 14, heat preservation cover 15, clamping groove 16, heat preservation cover 17, positioning block 18, positioning groove 19, positioning bolt 20, connecting pipe 21, sealing groove 22, sealing pad 23, flow guide pipe assembly 24 and control valve 25, the top of water meter base 1 is installed with water meter body 2, and the left and right sides of water meter base 1 are installed with first connecting disc 3 and second connecting disc 4 respectively, the reverse side of first connecting disc 3 and second connecting disc 4 is installed with water inlet pipe 5 and water outlet pipe 6 respectively, recess 7 is formed in the inside of water inlet pipe 5 and water outlet pipe 6, and positioning strip 8 is installed on recess 7, hollow column 9 is installed on positioning strip 8, the right side of sealing plate 11 is installed with guide rod 12, guide rod 12 penetrates in hollow column 9, guide rod 12 and hollow column 9 are connected in sliding, when sealing plate 11 moves left and right under stress, can be moved left and right along hollow column 9 by guide rod 12, to make sealing plate 11 more stable when moving left and right, and not deviate, the left side of positioning strip 8 is installed with sealing plate 11 by extension spring 10, sealing plate 11 is circular structure design, and the diameter of sealing plate 11 is greater than the diameter of water inlet pipe 5 thin end, the diameter of sealing plate 11 is less than the diameter of recess 7, when water is in water inlet pipe 5, sealing plate 11 moves right under the pressure of water, extrudes extension spring 10, and water flow can pass the gap between sealing plate 11 and recess 7, then pass water meter base 1 and water meter body 2, water meter body 2 is metered to water flow, and finally is discharged through water outlet pipe 6, when water inlet pipe 5 stops water, sealing plate 11 disappears under stress, sealing plate 11 moves left under the action of the resilience of extension spring 10, and is in abutment with the inner wall of water inlet pipe 5, to prevent the water in water meter base 1 and water meter body 2 from flowing back through water inlet pipe 5 and water outlet pipe 6, so as to protect water meter body 2.

[0039] The lower part of the water meter base 1 is provided with a heat preservation pad 13, the upper surface of the water meter base 1 is provided with a limiting block 14 on the left and right sides, the water meter base 1 is sleeved with a heat preservation cover 15, the left and right sides of the heat preservation cover 15 are provided with clamping grooves 16, the clamping grooves 16 and the water meter base 1 are of rectangular structure, when the heat preservation cover 15 is installed, the heat preservation cover 15 is sleeved on the water meter base 1 through the clamping grooves 16, the upper part of the heat preservation cover 15 is provided with a heat preservation cover 17, the heat preservation cover 17 is detachably connected with the heat preservation cover 15, the heat preservation cover 17 is located directly above the water meter body 2, the heat preservation cover 17 is opened, the water meter body 2 inside the heat preservation cover 15 can be viewed and repaired, when the water meter body 2 is used frequently, the control valve 25 is in a closed state, the heat preservation cover 15 plays a role in preventing freezing for the water meter body 2, so that the water meter body 2 is not easy to be damaged by freezing in a cold environment, the service life of the water meter body 2 is improved, the left and right sides of the heat preservation cover 15 are provided with positioning blocks 18, the positioning blocks 18 are located above the limiting blocks 14, the upper surface of the limiting blocks 14 abuts against the lower surface of the positioning blocks 18, the limiting blocks 14 play a limiting role when the heat preservation cover 15 is installed, so that the heat preservation cover 15 is sleeved at the middle position of the water meter base 1, the positioning blocks 18 are provided with positioning grooves 19, the first connecting disc 3 and the second connecting disc 4 are provided with positioning bolts 20, the center line of the positioning bolts 20 coincides with the center line of the positioning grooves 19, the positioning bolts 20 are threadedly connected with the first connecting disc 3 and the second connecting disc 4, after the heat preservation cover 15 is sleeved, the positioning bolts 20 on the left and right sides are rotated and moved to one side of the positioning blocks 18, so that the positioning bolts 20 are clamped with the positioning grooves 19 on the positioning blocks 18, the installation of the heat preservation cover 15 is completed, and the structure is simple and convenient to disassemble.

[0040] The lower part of the water inlet pipe 5 and the water outlet pipe 6 is provided with a connecting pipe 21, and the inner part of the connecting pipe 21 is provided with a sealing groove 22, the inner part of the sealing groove 22 is provided with a sealing pad 23, the lower part of the connecting pipe 21 is communicated with a flow guide pipe assembly 24, and the flow guide pipe assembly 24 is provided with a control valve 25, the connecting pipe 21 is threadedly and sealingly connected with the water inlet pipe 5 and the water outlet pipe 6, the connecting pipe 21 is located between the left and right sealing plates 11, the connecting pipe 21 is threadedly connected with the flow guide pipe assembly 24, when the water meter body 2 is not supplied with water for a long time, the water inlet valve can be closed, then the control valve 25 is opened, a small amount of residual water in the left and right water inlet pipes 5 and the water outlet pipe 6 of the water meter body 2 is discharged through the flow guide pipe assembly 24, the residual water in the water inlet pipe 5 and the water outlet pipe 6 is prevented from repeatedly freezing in cold temperature, and the service life of the water meter body 2 is affected, when the flow guide pipe assembly 24 is installed, the flow guide pipe assembly 24 is sleeved below the connecting pipe 21, then the connecting pipe 21 is rotated, the connecting pipe 21 moves downward to fix the flow guide pipe assembly 24, and meanwhile the connecting pipe 21 moves downward to drive the sealing pad 23 in the connecting pipe 21 to move downward, the top end of the flow guide pipe assembly 24 is tightly abutted with the sealing pad 23, the sealing property of the pipeline connection is improved, and the flow guide pipe assembly 24 and the connecting pipe 21 are convenient to disassemble.

[0041] Working principle: when the anti-freezing water meter with the anti-backflow mechanism is used, first, when water flows into the water inlet pipe 5, the sealing plate 11 moves rightwards under the water pressure and extrudes the extension spring 10, the water flow can pass through the gap between the sealing plate 11 and the groove 7, then pass through the water meter base 1 and the water meter body 2, the water meter body 2 measures the water flow, and finally the water flow is discharged through the water outlet pipe 6, when the water inlet pipe 5 stops supplying water, the sealing plate 11 is not forced, the sealing plate 11 moves leftwards under the elastic force of the extension spring 10 and abuts against the inner walls of the water inlet pipe 5 and the water outlet pipe 6, the water in the water meter base 1 and the water meter body 2 is prevented from flowing back through the water inlet pipe 5 and the water outlet pipe 6, and the water meter body 2 is protected.

[0042] When the heat preservation cover 15 is installed, the heat preservation cover 15 is sleeved on the water meter base 1 through the clamping groove 16, the lower surface of the heat preservation cover 15 abuts against the heat preservation pad 13 below the water meter base 1, the positioning bolt 20 moves to one side of the positioning block 18 by rotating, the positioning bolt 20 is clamped with the positioning groove 19 on the positioning block 18, and the installation of the heat preservation cover 15 is completed, the structure is simple, and the heat preservation cover 15 is convenient to disassemble.

[0043] When the water meter body 2 is not supplied with water for a long time, the water inlet valve can be closed, and then the control valve 25 is opened, so that a small amount of residual water in the water inlet pipe 5 and the water outlet pipe 6 on the left and right sides of the water meter body 2 is discharged through the flow guide pipe assembly 24, so as to prevent the residual water in the water inlet pipe 5 and the water outlet pipe 6 from repeatedly freezing in cold temperature, and affect the service life of the water meter body 2. When the flow guide pipe assembly 24 is installed, the flow guide pipe assembly 24 is sleeved below the connecting pipe 21, and then the connecting pipe 21 is rotated and moved downward, so as to fix the flow guide pipe assembly 24. At the same time, the connecting pipe 21 moves downward, and the sealing gasket 23 in the connecting pipe 21 moves downward and tightly abuts against the top end of the flow guide pipe assembly 24, so as to improve the sealing performance of the pipeline connection, and facilitate disassembly of the flow guide pipe assembly 24 and the connecting pipe 21. Thus, a series of work is completed. The contents not described in detail in the specification belong to the prior art known by the person skilled in the art.

[0044] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A freeze-proof water meter having an anti-backflow mechanism, comprising a water meter base (1) and a heat preservation cover (15), characterized in that: The water meter body (2) is installed above the water meter base (1), and the first connecting disc (3) and the second connecting disc (4) are respectively installed on the left side and the right side of the water meter base (1), the reverse side of the first connecting disc (3) and the second connecting disc (4) is respectively installed with the water inlet pipe (5) and the water outlet pipe (6), the inside of the water inlet pipe (5) and the water outlet pipe (6) is respectively provided with a groove (7), and the groove (7) is respectively installed with a positioning strip (8), the left side of the positioning strip (8) is installed with a sealing plate (11) through an extension spring (10). The heat preservation pad (13) is installed below the water meter base (1), the limiting block (14) is installed on the upper surface of the water meter base (1) left and right sides, the heat preservation cover (15) is sleeved on the water meter base (1), the heat preservation cover (15) is installed with the limiting block (18) on the left and right sides, and the limiting block (18) is provided with the limiting groove (19), the first connecting disc (3) and the second connecting disc (4) are installed with the limiting bolt (20). The connecting pipe (21) is installed below the water inlet pipe (5) and the water outlet pipe (6), and the inside of the connecting pipe (21) is provided with the sealing groove (22), the sealing pad (23) is clamped in the sealing groove (22), and the flow guide pipe assembly (24) is communicated below the connecting pipe (21), and the control valve (25) is installed on the flow guide pipe assembly (24).

2. The freeze-proof water meter having an anti-backflow mechanism according to claim 1, characterized by: The hollow column (9) is installed on the positioning strip (8), the right side of the sealing plate (11) is installed with the guide rod (12), the guide rod (12) penetrates the hollow column (9), and the guide rod (12) and the hollow column (9) are connected in sliding mode.

3. The freeze-proof water meter having an anti-backflow mechanism according to claim 2, characterized by: The sealing plate (11) is designed in a circular structure, and the diameter of the sealing plate (11) is greater than the diameter of the thin end of the water inlet pipe (5), and the diameter of the sealing plate (11) is less than the diameter of the groove (7).

4. The freeze-proof water meter with an anti-backflow mechanism according to claim 1, characterized in that: The heat preservation cover (15) is provided with the clamping groove (16) on the left and right sides, and the heat preservation cover (15) and the water meter base (1) are designed in a rectangular structure.

5. The freeze-proof water meter with an anti-backflow mechanism according to claim 4, characterized in that: The heat preservation cover (17) is installed above the heat preservation cover (15), the heat preservation cover (17) and the heat preservation cover (15) are detachably connected, and the heat preservation cover (17) is located directly above the water meter body (2).

6. The freeze-proof water meter with an anti-backflow mechanism according to claim 1, characterized in that: The limiting block (18) is located above the limiting block (14), and the upper surface of the limiting block (14) and the lower surface of the limiting block (18) are in abutment.

7. The freeze-proof water meter with an anti-backflow mechanism according to claim 1, characterized in that: The center line of the limiting bolt (20) and the center line of the limiting groove (19) coincide with each other, and the limiting bolt (20) is threadedly connected with the first connecting disc (3) and the second connecting disc (4).

8. The freeze-proof water meter with an anti-backflow mechanism according to claim 1, characterized in that: The connecting pipe (21) is threadedly and sealingly connected with the water inlet pipe (5) and the water outlet pipe (6), the connecting pipe (21) is located between the sealing plates (11) on the left and right sides, and the connecting pipe (21) is threadedly connected with the flow guide pipe assembly (24).

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