Double-locking water meter anti-backflow device

Abstract

The utility model discloses a double-locking water meter anti-backflow device, and relates to the technical field of intelligent water meters. The device comprises a heat preservation box, wherein an anti-backflow mechanism and a constant temperature mechanism are arranged in the heat preservation box; the backflow prevention mechanism comprises a water meter body fixedly installed on the inner wall of the bottom of the heat preservation box, a flow limiting groove is formed in the right end of the water meter body, a fixing plate is fixedly installed in the flow limiting groove, a telescopic rod is fixedly installed on the left side of the fixing plate, a spring is wound on the telescopic rod, and the right end of the spring is fixedly connected with the fixing plate. And a flow limiting plate is fixedly mounted on an output shaft of the telescopic rod. By arranging the backflow prevention mechanism, the problems that when the backflow prevention device is used for a long time or liquid contains particulate matter, the steel ball backflow prevention device is possibly damaged or blocked, and the particulate matter is possibly attached to the steel ball, so that the steel ball cannot move freely, and normal work of the device is affected are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of intelligent water meters, in particular to a double-locking water meter backflow prevention device. Background Art

[0002] Smart water meter is a new type of water meter that uses modern microelectronics technology, modern sensor technology, and smart IC card technology to measure water consumption, transmit water consumption data, and settle transactions. Compared with traditional water meters, which generally only have the functions of flow collection and mechanical pointer display of water consumption, it is a great improvement. The existing smart water meter backflow prevention device has the disadvantages of low sensitivity and overly complex device structure. In addition, the installation of the backflow prevention device in the smart water meter will affect the water pressure, resulting in errors in water flow measurement.

[0003] In the related art, a backflow prevention device for a water meter with publication number CN2699249Y is disclosed, which is composed of a ball and a ball-blocking sleeve to form a backflow prevention plug that can be inserted into the water meter interface, or a backflow prevention plug composed of an anti-pullout plug containing a one-way valve to form a backflow prevention plug that can be inserted into the water meter interface.

[0004] When the device is used for a long time or when the liquid contains particulate matter, the steel ball anti-backflow device may be damaged or stuck, and the particulate matter may adhere to the steel ball, causing the steel ball to be unable to move freely, thereby affecting the normal operation of the device. Utility Model Content

[0005] The purpose of the utility model is to provide a double-locking water meter backflow prevention device. By setting up an anti-backflow mechanism, the problem that the steel ball anti-backflow device may be damaged or stuck when used for a long time or when the liquid contains particulate matter is solved, and the particulate matter may adhere to the steel ball, causing the steel ball to be unable to move freely, thereby affecting the normal operation of the device.

[0006] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0007] The utility model is a double-locking water meter backflow prevention device, comprising a heat preservation box, wherein the heat preservation box is provided with a backflow prevention mechanism and a constant temperature mechanism;

[0008] The anti-backflow mechanism includes a water meter body fixedly installed on the inner wall of the bottom of the insulation box, a limiting flow groove is opened at the right end of the water meter body, a fixing plate is fixedly installed in the limiting flow groove, a telescopic rod is fixedly installed on the left side of the fixing plate, a spring is wound on the telescopic rod, the right end of the spring is fixedly connected to the fixing plate, a limiting flow plate is fixedly installed on the output shaft of the telescopic rod, the left end of the spring is fixedly connected to the limiting flow plate, a first gasket is fixedly installed on the left end of the limiting flow plate, and the limiting flow plate and the first gasket are both adapted to the limiting flow groove.

[0009] Furthermore, a first threaded groove is respectively provided at the left and right ends of the water meter body, a filter is arranged in the water meter body, a first rotating shaft is rotatably mounted on the bottom inner wall of the filter, and an impeller is fixedly sleeved on the first rotating shaft.

[0010] Furthermore, a second thread groove is provided on the inner wall of the water meter body, a second gasket is fixedly mounted on the top of the filter, and an isolation block is threadedly mounted on the top of the water meter body.

[0011] Furthermore, the end of the first rotating shaft extends into the isolation block, a first gear is fixedly sleeved on the first rotating shaft, a sensor is fixedly installed on the inner wall of the bottom end of the isolation block, a second rotating shaft is rotatably installed on the top of the sensor, a second gear is fixedly sleeved on the second rotating shaft, and the second gear is meshed with the first gear.

[0012] Furthermore, a dial is fixedly mounted on the top of the isolation block, a display screen is arranged on the inner wall of the bottom end of the dial, and a dial cover is hingedly mounted on the top end of the dial.

[0013] Furthermore, the constant temperature mechanism includes two lamp holders fixedly mounted on the front and back inner walls of the incubator, two heating lamps are respectively arranged in the two lamp holders, two heat-releasing lampshades are respectively fixedly mounted on the two lamp holders, an incubator cover is hingedly mounted on the top of the incubator, and an incubator cover handle is fixedly mounted on the front of the incubator cover.

[0014] The utility model has the following beneficial effects:

[0015] 1. By setting up an anti-backflow mechanism, when the water supply in the water supply pipe stops or the water supply pressure is insufficient, the water in the water meter may flow back into the water supply pipe. This backflow phenomenon may cause water supply pollution, damage water quality safety, and even damage water supply equipment and pipes. The anti-backflow device automatically closes the water meter outlet to prevent water from flowing back into the water supply pipe, ensuring the safe operation of the water supply system and the sanitation of water quality. By designing a special mechanism, the water meter can only measure forward and cannot flow back or measure in reverse, effectively preventing water fee fraud and protecting the interests of the water supply company;

[0016] 2. By setting up a heating mechanism, the water in the water meter will freeze in an extremely cold environment, which will cause the anti-backflow device to fail, and thus affect the normal operation of the water supply system. In order to avoid this situation, a heating device is added to the double-locking water meter anti-backflow device. The heating device can provide insulation in an extremely cold environment, prevent the water in the water meter from freezing, and ensure the normal operation of the anti-backflow device.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a front cross-sectional structural schematic diagram of the utility model;

[0021] Figure 3 It is a side sectional structural schematic diagram of the utility model;

[0022] Figure 4 For this utility model Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0023] Figure 5 For this utility model Figure 2 A schematic diagram of the enlarged structure of B;

[0024] Figure 6 For this utility model Figure 3 Schematic diagram of the enlarged structure of C in the figure.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Insulation box; 2. Water meter body; 3. Flow limiting groove; 4. Fixed plate; 5. Telescopic rod; 6. Spring; 7. Flow limiting plate; 8. First gasket; 9. First thread groove; 10. Filter; 11. First rotating shaft; 12. Impeller; 13. Second thread groove; 14. Second gasket; 15. Isolation block; 16. First gear; 17. Sensor; 18. Second rotating shaft; 19. Second gear; 20. Dial; 21. Display screen; 23. Dial cover; 24. Lamp holder; 25. Heating lamp; 26. Heat-releasing lampshade; 27. Insulation box cover; 28. Insulation box cover handle. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-6 As shown, the utility model is a double-locking water meter backflow prevention device, comprising an insulation box 1, in which an anti-backflow mechanism and a constant temperature mechanism are arranged;

[0029] The backflow prevention mechanism includes a water meter body 2 fixedly installed on the inner wall of the bottom of the insulation box 1, a limiting flow groove 3 is opened at the right end of the water meter body 2, a fixing plate 4 is fixedly installed in the limiting flow groove 3, a telescopic rod 5 is fixedly installed on the left side of the fixing plate 4, a spring 6 is wound on the telescopic rod 5, the right end of the spring 6 is fixedly connected to the fixing plate 4, a limiting flow plate 7 is fixedly installed on the output shaft of the telescopic rod 5, the left end of the spring 6 is fixedly connected to the limiting flow plate 7, a first gasket 8 is fixedly installed on the left end of the limiting flow plate 7, and the limiting flow plate 7 and the first gasket 8 are both adapted to the limiting flow groove 3.

[0030] Among them Figure 3 As shown, the left and right ends of the water meter body 2 are respectively provided with first thread grooves 9, a filter 10 is arranged in the water meter body 2, a first rotating shaft 11 is rotatably mounted on the bottom inner wall of the filter 10, and an impeller 12 is fixedly sleeved on the first rotating shaft 11.

[0031] By setting up a filter, impurities and solid particles in the water can be filtered out. Through the fine mesh, the filter can prevent suspended matter such as mud, stone particles, fibers, etc. from entering the counter to maintain measurement accuracy.

[0032] Among them Figure 5 As shown, a second thread groove 13 is provided on the inner wall of the water meter body 2 , a second gasket 14 is fixedly mounted on the top of the filter 10 , and an isolation block 15 is threadedly mounted on the top of the water meter body 2 .

[0033] By setting up the isolation block, the normal operation of the internal mechanical parts and the accuracy of the measurement can be ensured. The dry-wet separation isolation block can effectively prevent the penetration of external humid air, prevent the influence of water vapor on the inside of the water meter counter, and maintain the internal dry environment.

[0034] Among them Figure 6As shown, the end of the first rotating shaft 11 extends into the isolation block 15, a first gear 16 is fixedly sleeved on the first rotating shaft 11, a sensor 17 is fixedly installed on the inner wall of the bottom end of the isolation block 15, a second rotating shaft 18 is rotatably installed on the top of the sensor 17, and a second gear 19 is fixedly sleeved on the second rotating shaft 18 ， The second gear 19 meshes with the first gear 16 .

[0035] By setting up sensors, the flow of water can be continuously monitored so as to understand the operating status of the water supply system in real time. By monitoring the water flow, abnormal conditions such as water leakage and abnormal water pressure can be detected, and alarms can be issued or processed in time to ensure the normal operation and safety of the water supply system.

[0036] Among them Figure 6 As shown, a dial 20 is fixedly mounted on the top of the isolation block 15 , a display screen 21 is arranged on the inner wall of the bottom end of the dial 20 , and a dial cover plate 23 is hingedly mounted on the top end of the dial 20 .

[0037] By setting the dial cover, the connection between the water meter counter and the water meter well is well sealed. This can prevent rainwater, mud and sand from the outside from entering the water meter well and affecting the work of the water meter counter, and can prevent water vapor inside the water meter from penetrating into the water meter well, thus improving the sealing performance of the water meter.

[0038] Among them Figure 1 and Figure 3 As shown, the constant temperature mechanism includes two lamp holders 24 fixedly mounted on the front and back inner walls of the insulated box 1, two heating lamps 25 are respectively arranged in the two lamp holders 24, two heat-releasing lampshades 26 are respectively fixedly mounted on the two lamp holders 24, an insulated box cover 27 is hingedly mounted on the top of the insulated box 1, and an insulated box cover handle 28 is fixedly mounted on the front of the insulated box cover 27.

[0039] By providing insulation in extremely cold environments, the water in the water meter is prevented from freezing, ensuring the normal operation of the backflow prevention device.

[0040] A specific application of this embodiment is: when in use, firstly, the water meter body 2 is connected to the pipe through the two first threaded grooves 9, and then the water switch is turned on. Water flows from the left end of the water meter body 2 through the water meter and then to the left end of the water meter body 2 to apply pressure to the first gasket 8 on the flow limiting plate 7. The flow limiting plate 7 pushes the telescopic rod 5 and the spring 6 on the fixed plate 4 to shrink the telescopic rod 5 and the spring 6. At this time, the water can flow to the right. If the water flows from the right end to the left end, the flow limiting plate 7 will block the water under the restriction of the flow limiting groove 3, thereby limiting the reverse flow of the water. After the water enters the water meter body 2, the filter 10 is firstly The water in the water meter body 2 will be filtered, and the larger impurities in the water will be filtered and then flushed into the filter 10. At this time, the water flow impels the impeller 12 on the first rotating shaft 11, and the impeller 12 drives the first gear 16 on the first rotating shaft 11 to drive the second gear 19 to rotate. The second gear 19 transmits the signal to the display screen 21 through the sensor 17 via the second rotating shaft 18 to provide an intuitive display to the user. In winter, most water meters will freeze and affect the normal use of the water meters. At this time, the heating lamp 25 on the lamp holder 24 can be started to melt the ice in the water meter body 2 through the heat-releasing lampshade 26.

[0041] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0042] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A double-locking water meter backflow prevention device, comprising an insulation box (1), characterized in that: The heat preservation box (1) is provided with a backflow prevention mechanism and a constant temperature mechanism; The anti-backflow mechanism comprises a water meter body (2) fixedly mounted on the inner wall of the bottom of the heat preservation box (1); a flow limiting groove (3) is provided at the right end of the water meter body (2); a fixing plate (4) is fixedly mounted in the flow limiting groove (3); a telescopic rod (5) is fixedly mounted on the left side of the fixing plate (4); a spring (6) is wound around the telescopic rod (5); the right end of the spring (6) is fixedly connected to the fixing plate (4); a flow limiting plate (7) is fixedly mounted on the output shaft of the telescopic rod (5); the left end of the spring (6) is fixedly connected to the flow limiting plate (7); a first gasket (8) is fixedly mounted on the left end of the flow limiting plate (7); the flow limiting plate (7) and the first gasket (8) are both compatible with the flow limiting groove (3).

2. A double locking water meter backflow prevention device according to claim 1, characterized in that: The left and right ends of the water meter body (2) are respectively provided with a first thread groove (9), a filter (10) is arranged inside the water meter body (2), a first rotating shaft (11) is rotatably mounted on the bottom inner wall of the filter (10), and an impeller (12) is fixedly sleeved on the first rotating shaft (11).

3. A double locking water meter backflow prevention device according to claim 2, characterized in that: A second thread groove (13) is provided on the inner wall of the water meter body (2), a second gasket (14) is fixedly mounted on the top of the filter (10), and an isolation block (15) is threadedly mounted on the top of the water meter body (2).

4. A double locking water meter backflow prevention device according to claim 3, characterized in that: The end of the first rotating shaft (11) extends into the isolation block (15); a first gear (16) is fixedly sleeved on the first rotating shaft (11); a sensor (17) is fixedly mounted on the inner wall of the bottom end of the isolation block (15); a second rotating shaft (18) is rotatably mounted on the top of the sensor (17); a second gear (19) is fixedly sleeved on the second rotating shaft (18); and the second gear (19) is meshed with the first gear (16).

5. A double locking water meter backflow prevention device according to claim 4, characterized in that: A dial (20) is fixedly mounted on the top of the isolation block (15), a display screen (21) is arranged on the inner wall of the bottom end of the dial (20), and a dial cover plate (23) is hingedly mounted on the top of the dial (20).

6. A double locking water meter backflow prevention device according to claim 5, characterized in that: The constant temperature mechanism comprises two lamp holders (24) fixedly mounted on the front and back inner walls of the heat preservation box (1), two heating lamps (25) are respectively arranged in the two lamp holders (24), two heat-releasing lampshades (26) are respectively fixedly mounted on the two lamp holders (24), a heat preservation box cover (27) is hingedly mounted on the top end of the heat preservation box (1), and a heat preservation box cover handle (28) is fixedly mounted on the front of the heat preservation box cover (27).

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