CN111637934B

CN111637934B - Metering device of NB-IOT thing networking water gauge

Info

Publication number: CN111637934B
Application number: CN202010315174.2A
Authority: CN
Inventors: 汪冬松
Original assignee: Anhui Danfengyuan Technology Co ltd
Current assignee: Anhui Danfengyuan Technology Co ltd
Priority date: 2020-04-21
Filing date: 2020-04-21
Publication date: 2021-12-21
Anticipated expiration: 2040-04-21
Also published as: CN111637934A

Abstract

The invention discloses a metering device of an NB-IOT (NB-IOT) Internet of things water meter, which comprises a water pipe, wherein a meter cover is fixedly arranged above the water pipe, a bottom box is fixedly arranged at the bottom of the water pipe, a water guide lug is fixedly arranged in the water pipe, a filter screen is fixedly arranged on the water guide lug, a water-stop plate is fixedly arranged in the water pipe, a metering shaft is rotatably arranged on the water-stop plate through a seal bearing, an impeller is fixedly arranged on the metering shaft, a main gear is fixedly arranged on the metering shaft, a compensation gear is meshed on the main gear, the compensation gear is coaxially connected with a transmission magnetic steel, a meter is arranged in the meter cover, and a double cam is fixedly arranged on the metering shaft; this metering device of NB-IOT thing networking water gauge can reach the purpose that prevents low temperature damage impeller, reduces loss of water pressure.

Description

Metering device of NB-IOT thing networking water gauge

Technical Field

The invention particularly relates to a metering device of an NB-IOT (network B-Internet of things) water meter.

Background

NB-IoT is short for narrowband Internet of things and is an important branch of the internet of everything, supports cellular data connection of low-power consumption equipment in a wide area network, is also called as a low-power consumption wide area network, an NB-IoT technology is applied to a water meter to generate an NB-IoT Internet of things water meter, can be called as an NB-IoT remote water meter, an NB-IoT intelligent water meter system mainly comprises the water meter with an NB-IoT communication module, an NB-IoT communication base station, an Internet of things cloud platform, a service server, client management software and the like, the client management software acquires resident water consumption data which are copied in real time from the cloud platform through the service server and monitors the real-time water consumption condition of each resident, the client can also carry out real-time stepped price adjustment control on the water consumption of residents, customize a data reading strategy of the service server, and push monthly water consumption conditions and fee deduction conditions to the residents.

The application of the NB-IoT technology to the Internet of things water meter has the characteristics of convenience in implementation, safety and reliability in use and convenience in user management, and the performance test and analysis results show that the whole system is good in running state, stable in performance and wide in market application prospect.

The conventional impeller of the NB-IoT Internet of things water meter is used as a driving device, the metering shaft is driven to rotate by the impact of water flow, so that the water consumption is recorded, but when the conventional water meter is used in winter, the frost damage of the conventional water meter due to cold weather occurs sometimes, particularly in cold regions, the simple heat preservation measure effect is poor, the metering device of a water meter clock installed and used outdoors is often damaged, and the main reason for the frost damage of the conventional water meter is that after the water meter is frozen at the cold air temperature, the volume of the water meter is increased when the water in the meter is changed from a liquid state to a solid state, and a certain expansion force is generated, so that the impeller in the water meter is deformed, and the normal operation of the water meter is influenced.

Disclosure of Invention

The invention aims to provide a metering device of an NB-IOT (NB-IOT) Internet of things water meter aiming at the defects in the prior art so as to achieve the purposes of preventing low temperature from damaging an impeller and reducing water pressure loss.

In order to achieve the purpose, the invention provides the following technical scheme: a metering device of an NB-IOT (NB-IOT) Internet of things water meter comprises a water pipe, a meter cover is fixedly mounted above the water pipe, a bottom box is fixedly mounted at the bottom of the water pipe, a water guide lug is fixedly mounted in the water pipe, a filter screen is fixedly mounted on the water guide lug, a water stop plate is fixedly mounted in the water pipe, a metering shaft is rotatably mounted on the water stop plate through a seal bearing, an impeller is fixedly mounted on the metering shaft, a main gear is fixedly mounted on the metering shaft, a compensation gear is meshed on the main gear, the compensation gear is coaxially connected with a transmission magnetic steel, a meter is mounted in the meter cover, double cams are fixedly mounted on the metering shaft, a stand column is fixedly mounted in the bottom box, a sliding chute is arranged in the stand column, a sliding block is slidably mounted in the sliding chute, a first spring is fixedly connected on the sliding block, and a sliding rod is fixedly connected on the sliding block, and the sliding rod is fixedly connected with a pressure ball, the sliding rod is fixedly provided with a friction rod, the bottom box is fixedly provided with a heat conduction plate and a friction pad, and the water pipe and the bottom box are internally provided with a water pressure compensation mechanism.

Preferably, the water pressure compensation mechanism comprises a lever, the lever is in contact with a moving part, the moving part comprises a vertical rod sliding in a limiting mode in the bottom box and a stressed part on the vertical rod, the front end of the stressed part is of a slope structure, a driving magnet is fixedly mounted at the top of the moving part, a second spring is fixedly connected onto the moving part, the driving magnet is located in a limiting groove in the top of the bottom box, a driven magnet is slidably mounted in the limiting groove in the bottom of the water service pipe, and a one-way valve is fixedly connected onto the driven magnet.

Preferably, the two ends of the water service pipe are fixedly provided with connecting flanges, the water guide lugs are arranged in the water service pipe, a steering water channel is formed in the water service pipe, and the filtering wire mesh is bowl-shaped and is connected between the two water guide lugs.

Preferably, the water-stop sheet is located between the water service pipe and the meter cover, a sealing bearing is installed in the middle of the water-stop sheet, the metering shaft is led into the meter cover, and the impeller rotates in the filtering wire mesh.

Preferably, the compensation gear is mounted on a rotating shaft in the meter cover, the gear ratio of the compensation gear to the main gear is set through measurement and calculation, and the transmission magnetic steel is magnetically connected with the meter.

Preferably, the slide bar slides and runs through the stand, and friction lever and pressurized ball are installed respectively at the both ends of slide bar, pressurized ball and two cam contact, and friction lever and friction pad contact, first spring coupling is between spout cell wall and slider, the measuring shaft stretches into in the under casing through the sealed bearing of water service pipe bottom, and two cam installation are at the measuring shaft tip.

Compared with the prior art, the invention has the beneficial effects that:

1. the double cams connected to the metering shaft drive one sliding rod, the sliding rod is driven to do reciprocating linear motion by matching with the first spring, so that the friction rod is driven to continuously rub with the friction pad, the generated heat is transferred to the water service pipe through the heat conducting plate, the kinetic energy of water flow is utilized, no additional driving part is needed, and the condition that the water flow in the water service pipe is gradually condensed due to low temperature and the impeller is protected in cold weather is avoided;

2. the double-cam water pressure compensation mechanism is arranged, the lever is driven by the double cam, the lever generates power difference to push a moving part, the moving part is matched with the second spring to reciprocate and drives the single valve by magnetic force, the single valve only allows water flow on one side to pass through, when the single valve moves along the water flow direction, the water flow can normally pass through, and when the single valve moves along the water flow direction, pressure can be applied to the water flow, so that the water flow is reinforced and pressurized;

3. the driving of the meter is carried out through the compensation gear meshed with the main gear, the diameter of the compensation gear is smaller than that of the main gear, and the gear ratio is calculated through comparison, compared with the main gear, the compensation gear can rotate more turns, the loss of the turns caused by the kinetic energy loss of the metering shaft is compensated, the number of the turns of the rotation of the compensation gear is used as a metering standard, and the quantity value is closer to the actual water consumption.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is an enlarged view of the area a in fig. 1.

In the figure: the water-through pipe comprises a water pipe 1, a meter cover 2, a bottom box 3, a water guide lug 4, a filtering screen 5, a water-stop plate 6, a metering shaft 7, an impeller 8, a main gear 9, a compensating gear 10, transmission magnetic steel 11, a meter 12, a double cam 13, a stand column 14, a sliding chute 15, a sliding block 16, a first spring 17, a sliding rod 18, a pressed ball 19, a friction rod 20, a friction pad 21, a heat-conducting plate 22, a lever 23, a moving part 24, a second spring 25, a driving magnet 26, a driven magnet 27 and a one-way valve 28.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 2, the present invention provides a technical solution: a metering device of an NB-IOT (network b of things) Internet water meter comprises a water pipe 1, a meter cover 2 is fixedly mounted above the water pipe 1, a bottom box 3 is fixedly mounted at the bottom of the water pipe 1, a water guide lug 4 is fixedly mounted in the water pipe 1, a filter screen 5 is fixedly mounted on the water guide lug 4, a water baffle plate 6 is fixedly mounted in the water pipe 1, a metering shaft 7 is rotatably mounted on the water baffle plate 6 through a seal bearing, an impeller 8 is fixedly mounted on the metering shaft 7, a main gear 9 is fixedly mounted on the metering shaft 7, a compensating gear 10 is meshed on the main gear 9, the compensating gear 10 is coaxially connected with a transmission magnetic steel 11, a meter 12 is mounted in the meter cover 2, a double cam 13 is fixedly mounted on the metering shaft 7, a stand 14 is fixedly mounted in the bottom box 3, a chute 15 is arranged in the stand 14, and a sliding block 16 is slidably mounted in the chute 15, and a first spring 17 is fixedly connected to the sliding block 16, a sliding rod 18 is fixedly connected to the sliding block 16, a pressed ball 19 is fixedly connected to the sliding rod 18, a friction rod 20 is fixedly mounted on the sliding rod 18, a heat conducting plate 22 and a friction pad 21 are fixedly mounted in the bottom box 3, and a water pressure compensation mechanism is mounted in the water service pipe 1 and the bottom box 3.

The hydraulic pressure compensation mechanism comprises a lever 23, the lever 23 is in contact with a moving part 24, the moving part 24 comprises a vertical rod which slides in a limiting manner in the bottom box 3 and a stressed part on the vertical rod, the front end of the stressed part is of a slope structure, a driving magnet 26 is fixedly arranged at the top of the moving part 24, a second spring 25 is fixedly connected onto the moving part 24, the driving magnet 26 is positioned in a limiting groove at the top of the bottom box 3, a driven magnet 27 is slidably arranged in a limiting groove at the bottom of the water pipe 1, a one-way valve 28 is fixedly connected onto the driven magnet 27, two ends of the lever 23 are respectively in contact with the double cams 13 and the moving part 24, the metering shaft 7 can drive the double cams 13 to rotate, so that the lever 23 is extruded around a central shaft and is extruded by amplified thrust acting on the moving part 24, and the slope structure of the moving part 24 overcomes the second spring 25 to move when being extruded, the moving part 24 reciprocates by matching with the reset action of the second spring 25, the driving magnet 26 connected with the moving part moves to drive the driven magnet 27 to move, so that the one-way valve 28 is driven to move left and right in the water service pipe 1, the one-way valve 28 only allows one-side water flow to pass through, when the one-way valve moves against the direction of the water flow, the water flow can normally pass through, and when the one-way valve moves along the direction of the water flow, pressure can be applied to the water flow, so that the water flow is reinforced and pressurized, the kinetic energy lost when the double cams 13 are driven to rotate by the metering shaft 7 is compensated, and meanwhile, the lever 23 structure can enable the one-way valve 28 to move more laborsavingly;

the two ends of the water service pipe 1 are fixedly provided with connecting flanges, the water guide lugs 4 are arranged in the water service pipe 1, a steering water channel is formed in the water service pipe 1, and the filtering silk screen 5 is bowl-shaped and is connected between the two water guide lugs 4;

the water-stop sheet 6 is positioned between the water pipe 1 and the meter cover 2, the sealing bearing is arranged in the middle of the water-stop sheet 6, the metering shaft 7 is introduced into the meter cover 2, the impeller 8 rotates in the filtering screen 5, water is filtered and then contacts with the impeller 8, so that the impeller 8 is prevented from being difficult to rotate due to the adhesion of impurities, and the metering shaft 7 is driven by water flow to rotate by the impeller 8;

the compensation gear 10 is arranged on a rotating shaft in the meter cover 2, the gear ratio of the compensation gear 10 to the main gear 9 is set through measurement and calculation, the transmission magnetic steel 11 is magnetically connected with the meter 12, generally, the diameter of the compensation gear 10 is smaller than that of the main gear 9, the compensation gear 10 rotates more circles compared with the main gear 9, the loss of the number of circles caused by the kinetic energy loss of the metering shaft 7 is compensated, the number of circles of the rotation of the compensation gear 10 is used as a metering standard, the quantity value is closer to the actual water consumption, and the meter 12 is a technology known in the field and can convert the number of circles of the rotation into the water consumption and transmit the water consumption to the cloud;

the sliding rod 18 penetrates through the upright post 14 in a sliding way, the friction rod 20 and the pressed ball 19 are respectively arranged at two ends of the sliding rod 18, the pressed ball 19 is contacted with the double cam 13, the friction rod 20 is contacted with the friction pad 21, the first spring 17 is connected between the groove wall of the chute 15 and the slide block 16, the metering shaft 7 extends into the bottom box 3 through a sealing bearing at the bottom of the water pipe 1, and the double cam 13 is arranged at the end part of the metering shaft 7, the double cam 13 can extrude the pressure ball 19 during the rotation process, so that the slide bar 18 moves against the first spring 17 and reciprocates under the elastic force of the first spring 17, the friction bar 20 and the friction pad 21 repeatedly generate heat by friction, the heat of the water pipe 1 is conducted through the heat conducting plate 22, so that the water flow in the water pipe is prevented from being gradually condensed due to low temperature, and the impeller 8 is protected in cold weather;

the working principle is as follows: when the water pipe is used, the water pipe 1 is installed on a water channel for use through connecting flanges on two sides, water flows are introduced into the water pipe 1, water is filtered by the filtering screen 5 and then contacts with the impeller 8, the impeller 8 is prevented from being difficult to rotate due to impurity bonding, the impeller 8 is driven by the water flows to drive the metering shaft 7 to rotate, the double cams 13 connected to the bottom of the metering shaft 7 rotate and extrude the pressure balls 19, so that the sliding rod 18 moves under the action of the first spring 17 and reciprocates under the action of the elastic force of the first spring 17, the friction rod 20 and the friction pad 21 repeatedly generate heat through friction, the heat is conducted into the water pipe 1 through the heat conducting plate 22, and the water flows in the water pipe are prevented from being gradually condensed due to low temperature, and the impeller 8 is protected in cold weather;

meanwhile, the double cam 13 drives the water pressure compensation mechanism, the double cam 13 extrudes the lever 23 to enable the lever to rotate around the central axis, the amplified thrust acts on the moving part 24 to extrude the moving part, the moving direction of the moving part 24 is limited, the slope surface structure enables the moving part 24 to overcome the second spring 25 to move when being extruded, the moving part 24 reciprocates under the reset action of the second spring 25, the driving magnet 26 connected with the moving part drives the driven magnet 27 to move when moving, so that the one-way valve 28 is driven to move left and right in the water service pipe 1, the one-way valve 28 only allows one-side water flow to pass through, when moving along the water flow direction, the water flow can normally pass through, and when moving along the water flow direction, the pressure can be applied to the water flow, so that the water flow is reinforced and pressurized, the kinetic energy lost when the metering shaft 7 drives the double cam 13 to rotate is compensated, the lever 23 structure enables a more labour-saving movement of the actuation check valve 28, thus generating a kinetic energy difference to compensate;

and the metering shaft 7 drives the main gear 9 to rotate, the main gear 9 is meshed with the compensation gear 10, the diameter of the compensation gear 10 is smaller than that of the main gear 9, compared with the main gear 9 that the compensation gear 10 can rotate more circles, the circle loss caused by the kinetic energy loss of the metering shaft 7 is compensated, the number of the circles of the rotation of the compensation gear 10 is used as a metering standard, and the value is closer to the actual water consumption.

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

Claims

1. The utility model provides a metering device of NB-IOT thing networking water gauge, includes water service pipe (1), its characterized in that: the water service pipe is characterized in that a meter cover (2) is fixedly mounted above the water service pipe (1), a bottom box (3) is fixedly mounted at the bottom of the water service pipe (1), a water guide lug (4) is fixedly mounted in the water service pipe (1), a filter screen (5) is fixedly mounted on the water guide lug (4), a water baffle (6) is fixedly mounted in the water service pipe (1), a metering shaft (7) is rotatably mounted on the water baffle (6) through a sealing bearing, an impeller (8) is fixedly mounted on the metering shaft (7), a main gear (9) is fixedly mounted on the metering shaft (7), a compensation gear (10) is meshed on the main gear (9), the compensation gear (10) is coaxially connected with a transmission magnetic steel (11), a meter (12) is mounted in the meter cover (2), a double cam (13) is fixedly mounted on the metering shaft (7), and a stand column (14) is fixedly mounted in the bottom box (3), a sliding groove (15) is arranged in the upright post (14), a sliding block (16) is arranged in the sliding groove (15), a first spring (17) is fixedly connected onto the sliding block (16), a sliding rod (18) is fixedly connected onto the sliding block (16), a pressed ball (19) is fixedly connected onto the sliding rod (18), a friction rod (20) is fixedly mounted onto the sliding rod (18), a heat-conducting plate (22) and a friction pad (21) are fixedly mounted in the bottom box (3), a water pressure compensation mechanism is mounted in the water pipe (1) and the bottom box (3), the water pressure compensation mechanism comprises a lever (23), the lever (23) is in contact with a moving piece (24), the moving piece (24) comprises a vertical rod capable of sliding in a limiting mode in the bottom box (3) and a stressed piece on the vertical rod, the front end of the stressed piece is of a slope surface structure, a driving magnet (26) is fixedly mounted at the top of the moving piece (24), and fixedly connected with second spring (25) on moving member (24), driving magnet (26) are arranged in the spacing groove at bottom (3) top, and sliding mounting has passive magnet (27) in the spacing groove of water service pipe (1) bottom, fixedly connected with check valve (28) on passive magnet (27).

2. The metering device of an NB-IOT internet-of-things water meter as claimed in claim 1, wherein: the water pipe is characterized in that connecting flanges are fixedly mounted at two ends of the water pipe (1), the water guide lugs (4) are arranged in the water pipe (1), a steering water channel is formed in the water pipe (1), and the filtering wire mesh (5) is bowl-shaped and is connected between the two water guide lugs (4).

3. The metering device of an NB-IOT internet-of-things water meter as claimed in claim 1, wherein: the water-stop sheet (6) is positioned between the water service pipe (1) and the meter cover (2), a sealing bearing is arranged in the middle of the water-stop sheet (6), the metering shaft (7) is introduced into the meter cover (2), and the impeller (8) rotates in the filtering wire mesh (5).

4. The metering device of an NB-IOT internet-of-things water meter as claimed in claim 1, wherein: the compensation gear (10) is installed on a rotating shaft in the meter cover (2), the gear ratio of the compensation gear (10) and the main gear (9) is set through measurement and calculation, and the transmission magnetic steel (11) is magnetically connected with the meter (12).

5. The metering device of an NB-IOT internet-of-things water meter as claimed in claim 1, wherein: the sliding rod (18) slides to penetrate through the upright post (14), a friction rod (20) and a pressed ball (19) are respectively installed at two ends of the sliding rod (18), the pressed ball (19) is in contact with the double cams (13), the friction rod (20) is in contact with a friction pad (21), the first spring (17) is connected between the groove wall of the sliding groove (15) and the sliding block (16), the metering shaft (7) extends into the bottom box (3) through a sealing bearing at the bottom of the water service pipe (1), and the double cams (13) are installed at the end of the metering shaft (7).