Ultrasonic water meter head device

Abstract

The utility model discloses an ultrasonic water meter head device which comprises a meter head shell, a meter head upper cover, a battery box assembly, a junction box assembly and a mainboard box assembly. A battery box mounting hole is formed in the outer side wall, close to the bottom, of the meter head shell, a mounting boss is arranged on the outer side wall, corresponding to the periphery of the battery box mounting hole, of the meter head shell, and a limiting groove is formed in the mounting boss; the battery box assembly comprises a battery box, a battery pack, a power line and a battery box protection cover. The battery box is a box body which is open towards the inner cavity of the meter head shell, and the open end of the battery box penetrates through the battery box mounting hole and is located in the inner cavity of the meter head shell; a limiting ring matched with the limiting groove is arranged on the periphery of the closed end of the battery box; a sealing gasket is arranged between the limiting ring and the limiting groove; the battery box protection cover tightly presses the battery box and is fixedly connected with the mounting boss; one end of the power line extends into the battery box from the open end of the battery box and is electrically connected with the battery pack, and the other end is electrically connected with the junction box assembly. The structure is simple, operation is easy and convenient, and sealing performance is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to ultrasonic flowmeter technical field especially relates to a kind of ultrasonic water meter head device. BACKGROUND

[0002] Ultrasonic water meter is a kind of water meter for measuring the flow of water, which obtains the flow rate of water by detecting the time difference caused by the change of velocity when ultrasonic beam propagates in water, and then calculates the flow of water. Ultrasonic water meter has the advantages of low initial flow rate, wide range ratio, high measurement accuracy and stable operation. In addition, there are no moving parts and no flow obstruction in the ultrasonic water meter, and it is not affected by impurities in water, with long service life and excellent low flow detection capability, so it has a broad application market and use prospect.

[0003] The ultrasonic water meter includes a meter head device, a meter body and an ultrasonic transducer. The meter head device includes a meter head shell, a meter head upper cover, a meter cover and a battery, a main board and a wiring board arranged in the inner cavity of the meter head shell. The meter head shell is sealingly installed at the pre-set wiring port of the meter body through the positioning slot formed in the bottom of the meter head shell. A through hole is formed in the center of the bottom of the meter head shell for passing the signal line of the transducer. The top of the meter head shell is open, and the meter head upper cover is fastened to the open end of the meter head shell. The meter head upper cover and the meter head shell are sealingly connected by screws and sealing elements. A lens is sealingly installed in the center of the meter head upper cover, and the meter cover is hingedly connected to the top of the meter sealing cover. The battery is located at the lower part of the inner cavity of the meter head shell, and the main board is located below the meter head upper cover and close to the opening of the inner cavity of the meter head shell. The battery and the main board are electrically connected to the wiring board. The meter body is connected to the water flow pipeline through the flanges at both ends. A water flow passage is arranged between the two flanges. The ultrasonic transducer is installed in pairs on the meter body for emitting and receiving ultrasonic signals. The signal line of the ultrasonic transducer passes through the pre-set passage of the meter body and extends to the wiring port and is electrically connected to the wiring board. The main board can calculate and display the flow rate of water according to the electrical signal output by the ultrasonic transducer.

[0004] In practical applications, lead seal holes are usually provided on the meter head upper cover and the meter head shell corresponding to each other. The meter head upper cover and the meter head shell are locked by lead seals arranged in the corresponding lead seal holes for fixing. This is used to display whether the water meter has been illegally disassembled to ensure that the metering performance is not maliciously adjusted and to prevent unauthorized modification of the internal components of the meter. In the above technical solution, the battery and other components are installed inside the meter head device. When replacing the battery, the lead seal needs to be removed by the staff, and the meter head upper cover needs to be opened for replacement. This operation is inconvenient and the replacement cost is high. The disassembly and assembly operation affects the sealing performance of the entire device. SUMMARY

[0005] To address at least one of the problems mentioned in the background art, this application provides an ultrasonic water meter head device, which has an independent battery box assembly relative to the overall device. The outer wall of the head housing has a battery box mounting hole, and the battery box assembly can be installed and fixed from the outer wall of the head housing. When replacing the battery, it is not necessary to open the head cover. The structure is simple, the operation is convenient, and it has good sealing performance.

[0006] This application provides an ultrasonic water meter head device, including a head housing, a head cover, a battery box assembly, a junction box assembly, and a main board box assembly;

[0007] The bottom of the meter head housing is used to connect to the pre-set wiring port on the meter body, and the meter head cover is fastened to the top of the meter head housing and is sealed and fixedly connected to the meter head housing;

[0008] The outer side wall of the meter housing near the bottom is machined with a battery box mounting hole. A mounting boss is provided on the outer side wall of the meter housing corresponding to the outer periphery of the battery box mounting hole. A limit groove is machined around the battery box mounting hole on the mounting boss.

[0009] The battery box assembly includes a battery box, a battery pack, a power cord, and a battery box protective cover; the battery box is a box body with an opening facing the inner cavity of the meter housing, the open end of the battery box passing through the battery box mounting hole and located in the inner cavity of the meter housing; the outer periphery of the closed end of the battery box is provided with a limiting ring that matches the limiting groove, and a sealing gasket is provided between the limiting ring and the limiting groove; the battery box protective cover presses against the closed end of the battery box and is fixedly connected to the mounting boss;

[0010] The battery pack is fixed inside the battery box. One end of the power cord extends into the battery box from the open end of the battery box and is electrically connected to the battery pack. The other end of the power cord is electrically connected to the junction box assembly.

[0011] The motherboard box assembly is located in the upper part of the inner cavity of the meter head housing, near the meter head cover, and the junction box assembly is located between the motherboard box assembly and the battery box assembly.

[0012] In one feasible implementation, the battery box has a groove on the outer side corresponding to the battery box mounting hole, and an O-ring is embedded in the groove; the battery box is filled with sealant.

[0013] In one feasible implementation, the battery box protective cover is fixed to the mounting boss by a hexagon socket head cap screw, the head of which is located in the countersunk hole of the battery box protective cover, and a screw protective cover is also inserted into the countersunk hole of the battery box protective cover.

[0014] In one feasible implementation, an inner ring support wall and an outer ring support wall are coaxially arranged on the top of the meter housing, and the height of the inner ring support wall is less than the height of the outer ring support wall. A plurality of main board box mounting seats are evenly distributed between the inner ring support wall and the outer ring support wall, and a plurality of top cover mounting seats are provided at the port of the outer ring support wall.

[0015] The motherboard box assembly is fastened to the port of the inner ring support wall and fixedly connected to the motherboard box mounting base, and the top cover is fastened to the outer ring support wall and fixedly connected to the top cover mounting base.

[0016] In one feasible implementation, the motherboard enclosure assembly includes a motherboard enclosure and a motherboard. The motherboard enclosure is a transparent box with an open bottom. The motherboard is installed inside the motherboard enclosure, and the display area of ​​the motherboard faces the top of the motherboard enclosure. An annular plate is connected to the outer periphery of the middle part of the motherboard enclosure. An annular groove is formed on the bottom surface of the annular plate. The annular groove is engaged with the port of the inner ring support wall, and a sealing gasket is embedded in the annular groove. The annular plate is installed on the motherboard enclosure mounting base by screws.

[0017] In one feasible implementation, the center of the top cover of the meter has a window corresponding to the display area of ​​the main board. The top cover of the meter is fixedly connected to the top cover mounting base by a hexagon socket screw. The head of the hexagon socket screw is located in the countersunk hole of the top cover of the meter, and a screw protective cap is also inserted into the countersunk hole of the top cover of the meter.

[0018] In one feasible implementation, a positioning platform is provided on the outer periphery of the port of the outer ring support wall, and a positioning ring corresponding to the positioning platform is provided on the top cover of the watch, and the positioning platform is engaged with the positioning ring.

[0019] In one feasible implementation, the watch cover is further included, which is fastened to the watch head cover. One end of the watch cover is hinged to one side of the watch head cover by a horizontally arranged toothed elastic pin. The watch head cover is provided with a snap-fit ​​interface on the side opposite to where the toothed elastic pin is installed. The watch cover is provided with a snap-fit ​​protrusion corresponding to the snap-fit ​​interface. The snap-fit ​​protrusion is snapped and fixed to the snap-fit ​​interface.

[0020] In one feasible implementation, the junction box assembly includes a junction box and a wiring circuit board. The junction box includes a junction box cover and a junction box body that are snap-fitted together. A connecting post is provided on the inner wall of the bottom of the junction box body, and the wiring circuit board is screwed to the connecting post.

[0021] In one feasible implementation, the device further includes an output line assembly comprising an output line, a metal waterproof cable connector, and a waterproof connector. The meter housing has a connector hole on the side wall near the bottom opposite to the mounting boss. The connector hole connects the inner cavity of the meter housing to the outside. The end of the connector hole near the outside is provided with an internal thread.

[0022] One end of the metal waterproof cable connector is connected to the internal thread of the connector hole, and the other end of the metal waterproof cable connector is located outside the meter housing. A connector sealing ring is provided between the metal waterproof cable connector and the outer wall surface of the meter housing.

[0023] One end of the output line extends into the inside of the meter housing and is electrically connected to the junction box assembly. The other end of the output line passes through the connector hole and the metal waterproof cable connector in sequence and is electrically connected to the waterproof connector. The inside of the metal waterproof cable connector near the inner cavity of the meter housing is filled with sealant.

[0024] In summary, the ultrasonic water meter head device provided in this application has a battery box mounting hole and a mounting boss on the side wall of the meter head housing. The battery pack is fixed inside the battery box to form a modular component unit. The battery box protective cover presses against the closed end of the battery box and connects with the mounting boss, thereby fixing the battery box assembly to the side wall of the meter head housing through the battery box mounting hole. When replacing the battery, there is no need for professional personnel to remove the lead seal and open the meter head cover. The old battery box can be removed from the side wall of the meter head housing for replacement, which can ensure the effectiveness of the measurement, reduce the cost of replacement operation, and has the advantages of simple structure, convenient operation and good sealing. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 A schematic diagram of the structure of an ultrasonic water meter head device provided in an embodiment of this application (in its assembled state with the meter body);

[0027] Figure 2 An assembly schematic diagram of an ultrasonic water meter head device provided in an embodiment of this application;

[0028] Figure 3 This is a front view of the ultrasonic water meter head device provided in the embodiments of this application;

[0029] Figure 4 forFigure 3 A magnified view of a section at point A in the middle;

[0030] Figure 5 A side view of the ultrasonic water meter head device provided in the embodiments of this application;

[0031] Figure 6 for Figure 5 A magnified view of a section at point B in the middle;

[0032] Figure 7 A top view of the ultrasonic water meter head device provided in the embodiments of this application;

[0033] Figure 8 This is a schematic diagram of the battery box provided in an embodiment of this application;

[0034] Figure 9 A top view of the motherboard enclosure assembly provided in an embodiment of this application;

[0035] Figure 10 for Figure 9 The view is oriented towards the CC direction.

[0036] Explanation of reference numerals in the attached figures:

[0037] 100-Meter housing; 101-Battery box mounting hole; 102-Mounting boss; 103-Limiting groove; 104-Inner ring support wall; 105-Outer ring support wall; 106-Top cover mounting base; 107-Connector hole;

[0038] 200-Battery Box Assembly;

[0039] 210-Battery box; 211-Limiting ring; 212-Sealing gasket; 213-O-ring seal; 220-Battery pack; 230-Power cord; 240-Battery box protective cover;

[0040] 300 - Motherboard enclosure assembly;

[0041] 310 - Motherboard box; 311 - Circular board; 312 - Circular groove; 313 - Lug; 314 - Sealing gasket; 320 - Motherboard; 330 - Display area protective pad; 340 - Ribbon cable; 350 - Plug;

[0042] 401 - Socket headstock screw; 402 - Screw cap; 403 - Socket headstock plug;

[0043] 500- Junction Box Assembly;

[0044] 510 - Junction box; 520 - Wiring circuit board;

[0045] 601 - Watch head cover; 602 - Watch cover; 603 - Lead seal; 604 - Toothed spring pin;

[0046] 700-Output Line Assembly;

[0047] 710 - Output cable; 720 - Metal waterproof cable connector; 730 - Waterproof connector;

[0048] 800 - Meter body; 801 - Wiring port. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. It is worth noting that the embodiments described in the accompanying drawings are only some embodiments of this application, and not all embodiments. That is, the embodiments described with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0050] The following will combine Figures 1-10 The ultrasonic water meter head device provided in the embodiments of this application will be described.

[0051] This application provides an ultrasonic water meter head device, such as... Figures 1-4 As shown, it includes a meter housing 100, a meter top cover 601, a battery box assembly 200, a junction box assembly 500, and a mainboard box assembly 300.

[0052] The bottom of the meter housing 100 is used to connect to the pre-set wiring port 801 on the meter body 800. The meter top cover 601 is fastened to the top of the meter housing 100 and is sealed and fixedly connected to the meter housing 100.

[0053] A battery box mounting hole 101 is machined on the outer side wall near the bottom of the meter housing 100. A mounting boss 102 is provided on the outer side wall of the meter housing 100 corresponding to the outer periphery of the battery box mounting hole 101. A limiting groove 103 is machined around the battery box mounting hole 101 on the mounting boss 102.

[0054] The battery box assembly 200 includes a battery box 210, a battery pack 220, a power cord 230, and a battery box protective cover 240. The battery box 210 is a box with an opening facing the inner cavity of the meter housing 100. The open end of the battery box 210 passes through the battery box mounting hole 101 and is located in the inner cavity of the meter housing 100. A limiting ring 211 matching the limiting groove 103 is provided on the outer periphery of the closed end of the battery box 210. A sealing gasket 212 is provided between the limiting ring 211 and the limiting groove 103. The battery box protective cover 240 presses against the closed end of the battery box 210 and is fixedly connected to the mounting boss 102.

[0055] The battery pack 220 is fixed inside the battery box 210. One end of the power cord 230 extends into the battery box 210 from the open end of the battery box 210 and is electrically connected to the battery pack 220. The other end of the power cord 230 is electrically connected to the junction box assembly 500.

[0056] The motherboard box assembly 300 is located in the upper part of the inner cavity of the meter housing 100, near the meter cover 601, and the junction box assembly 500 is located between the motherboard box assembly 300 and the battery box assembly 200.

[0057] The meter head housing 100 is sealed to the meter body 800 via a positioning groove at its bottom and connected by screws to a pre-set wiring port 801. The sealing connection structure between the bottom of the meter head housing 100 and the meter body 800 is located inside the meter head device, resulting in good overall sealing performance of the ultrasonic water meter. A through hole is opened at the center of the bottom of the meter head housing 100, through which the ultrasonic transducer connection wire is electrically connected to the junction box assembly 500.

[0058] The battery box assembly 200 adopts a modular design. The battery pack 220 and the battery box 210 are independently fixed and disassembled as a whole from the battery box mounting hole 101 on the side wall of the meter housing 100, without the need to open the meter cover 601, simplifying the battery replacement operation and not affecting the metering accuracy of the device. The open end of the battery box 210 is located in the inner cavity of the meter housing 100, and the closed end is sealed and fixed at the battery box mounting hole 101. The battery box protective cover 240 is pressed tightly and sealed and fixed to the mounting boss 102. This structure makes the overall sealing of the battery box assembly 200 better and has a double waterproof effect.

[0059] The junction box assembly 500 can be placed on top of the installed battery box assembly 200, or a mounting structure for fixing the junction box assembly 500 can be provided on the inner wall of the meter housing 100.

[0060] The ultrasonic water meter head device provided in this application has a battery box mounting hole 101 and a mounting boss 102 on the side wall of the head housing 100. The battery pack 220 is fixed inside the battery box 210 to form a battery box assembly 200 unit with an independent modular structure. The battery box protective cover 240 presses against the closed end of the battery box 210 and connects with the mounting boss 102, so that the battery box assembly 200 is fixed on the side wall of the head housing 100 through the battery box mounting hole 101. When replacing the battery, there is no need for professional personnel to remove the lead seal and open the head cover 601. The old battery box 210 can be removed from the side wall of the head housing 100 for replacement. This can ensure the metering effectiveness of the device, reduce the cost of replacement operation, and has the advantages of simple structure, convenient operation and good sealing.

[0061] In one feasible implementation, such as Figure 4 and Figure 8As shown, the battery box 210 has a groove on the outer side corresponding to the battery box mounting hole 101, and an O-ring 213 is embedded in the groove; the battery box 210 is filled with sealant.

[0062] The O-ring 213 ensures a secure connection between the battery box assembly 200 and the meter housing 100, preventing loosening and improving the overall sealing performance of the device. After assembling the battery pack 220 inside the battery box 210, the battery box 210 is sealed with sealant to ensure an IP68 protection rating. This allows the battery box 210 and the battery pack 220 to form an independent unit, enabling quick replacement and further improving the overall waterproof performance of the device.

[0063] In one feasible implementation, such as Figure 2 As shown, the battery box protective cover 240 is fixed to the mounting boss 102 by a hexagon socket head cap screw 401. The head of the hexagon socket head cap screw 401 is located in the countersunk hole of the battery box protective cover 240, and a screw protective cover 402 is also inserted into the countersunk hole of the battery box protective cover 240.

[0064] Among them, a screw protection cover 402 is installed at the battery box protective cover 240 to prevent accidental disassembly or loosening of screws. This setting can further improve the overall stability of the device.

[0065] In one feasible implementation, such as Figure 2 and Figures 5-6 As shown, an inner ring support wall 104 and an outer ring support wall 105 are coaxially arranged on the top of the meter housing 100, and the height of the inner ring support wall 104 is less than the height of the outer ring support wall 105. Several motherboard box mounting seats (not shown in the figure) are evenly distributed between the inner ring support wall 104 and the outer ring support wall 105. Several top cover mounting seats 106 are provided at the port of the outer ring support wall 105.

[0066] The motherboard box assembly 300 is fastened to the port of the inner ring support wall 104 and fixedly connected to the motherboard box mounting base. The meter head cover 601 is fastened to the outer ring support wall 105 and fixedly connected to the top cover mounting base 106.

[0067] With this design, the top and bottom of the meter housing 100 are sealed internally, and the entire device is a single-seal, tightly connected assembly. This avoids the leakage points caused by exposed screws due to loosening or other reasons, achieving multiple sealing and waterproofing effects, improving operational stability. The overall structure of the device is simple, easy to assemble and maintain, and can be widely used in various working conditions, making it suitable for humid and harsh environments, especially underwater working environments.

[0068] In one feasible implementation, such as Figure 6 and Figures 9-10As shown, the motherboard enclosure assembly 300 includes a motherboard enclosure 310 and a motherboard 320. The motherboard enclosure 310 is a transparent box with an open bottom. The motherboard 320 is installed inside the motherboard enclosure 310, and the display area of ​​the motherboard 320 faces the top of the motherboard enclosure 310. An annular plate 311 is connected to the outer periphery of the middle part of the motherboard enclosure 310. An annular groove 312 is formed on the bottom surface of the annular plate 311. The annular groove 312 is fastened to the port of the inner ring support wall 104, and a sealing gasket 314 is embedded in the annular groove 312. The annular plate 311 is installed on the motherboard enclosure mounting base by screws.

[0069] The motherboard 320 is fixedly mounted to the inner wall of the top of the motherboard box 310 by screws. A display area protective pad 330 is sleeved around the display area of ​​the motherboard 320, and the display area protective pad 330 abuts against the inner wall of the motherboard 320 and the motherboard box 310. The motherboard box assembly 300 also includes a ribbon cable 340, one end of which is electrically connected to the motherboard 320, and the other end is electrically connected to a plug 350, which is electrically connected to the junction box assembly 500.

[0070] The area inside the motherboard enclosure 310 and outside the display area protective pad 330 is potted with sealant, achieving an IP68 protection rating. The display area protective pad 330 is made of sponge or other elastic material to prevent sealant from entering the LCD screen of the motherboard 320 display area.

[0071] Lugs 313 are evenly distributed on the outer periphery of the annular plate, and the lugs 313 are installed on the motherboard box mounting base by screws.

[0072] This design ensures that the motherboard enclosure assembly 300 has a better overall protection level, preventing water ingress into the meter device from damaging the components inside the motherboard enclosure assembly 300 and thus extending the service life of the motherboard enclosure assembly 300.

[0073] In one feasible implementation, such as Figure 2 As shown, the center of the meter head cover 601 has a window corresponding to the display area of ​​the main board 320. The meter head cover 601 is fixedly connected to the upper cover mounting base 106 by a hexagon socket head cap screw 401. The head of the hexagon socket head cap screw 401 is located in the countersunk hole of the meter head cover 601. A screw protective cover 402 is also inserted into the countersunk hole of the meter head cover 601.

[0074] Among them, a screw protection cover 402 is installed at the meter head cover 601 to prevent illegal dismantling or loosening of screws. This setting can further improve the overall metering reliability of the device, and its function is similar to that of the screw protection cover 402 installed at the battery box protection cover 240.

[0075] In one feasible implementation, such as Figure 6As shown, a positioning platform is provided on the outer periphery of the port of the outer ring support wall 105, and a positioning ring corresponding to the positioning platform is provided on the top cover 601 of the meter. The positioning platform and the positioning ring are engaged.

[0076] This design, with the positioning platform and positioning ring engaging, facilitates the installation and positioning of the meter head cover 601 and the meter head box, further improving assembly operability.

[0077] In one feasible implementation, such as Figure 2 and Figures 5-6 As shown, it also includes a watch cover 602 that is fastened to the watch head cover 601. One end of the watch cover 602 is hinged to one side of the watch head cover 601 by a horizontally set toothed elastic pin 604. The watch head cover 601 is provided with a snap-fit ​​interface on the side opposite to where the toothed elastic pin 604 is installed. The watch cover 602 is provided with a snap-fit ​​protrusion corresponding to the snap-fit ​​interface. The snap-fit ​​protrusion is snapped and fixed to the snap-fit ​​interface.

[0078] With this configuration, the meter head cover 601 and the meter cover 602 are hinged together, and the meter cover 602 can be flipped over to observe the measurement data, making operation convenient.

[0079] In one feasible implementation, such as Figure 3 As shown, the junction box assembly 500 includes a junction box 510 and a wiring circuit board 520. The junction box 510 includes a junction box cover and a junction box body that are snap-fitted together. A connecting post is provided on the inner wall of the bottom of the junction box body. The wiring circuit board 520 is screwed to the connecting post.

[0080] The junction box 510 is filled with sealant, and its protection level reaches IP68. The junction box assembly 500, as the wiring hub, is located in the middle of the inner cavity of the meter housing 100. It is electrically connected to the battery box assembly 200, the main board box assembly 300 and the transducer signal line, which facilitates maintenance and repair operations.

[0081] In one feasible implementation, such as Figure 3 and Figure 7 As shown, it also includes an output line assembly 700, which includes an output line 710, a metal waterproof cable connector 720 and a waterproof connector 730. The meter housing 100 has a connector hole 107 on the side wall near the bottom opposite the mounting boss 102. The connector hole 107 connects the inner cavity of the meter housing 100 and the outside. The end of the connector hole 107 near the outside is provided with an internal thread.

[0082] One end of the metal waterproof cable connector 720 is connected to the internal thread of the connector hole 107, and the other end of the metal waterproof cable connector 720 is located outside the meter housing 100. A connector sealing ring is provided between the metal waterproof cable connector 720 and the outer wall surface of the meter housing 100.

[0083] One end of the output line 710 extends into the inside of the meter housing 100 and is electrically connected to the junction box assembly 500. The other end of the output line 710 passes through the connector hole 107 and the metal waterproof cable connector 720 in sequence and is electrically connected to the waterproof connector 730. The metal waterproof cable connector 720 is sealed with sealant at the end near the inner cavity of the meter housing 100.

[0084] The number of connector holes 107 can be set to two. One of the two connector holes 107 is connected to the output line assembly 700 for data output, and the other of the two connector holes 107 is connected to the pressure sensor assembly (not shown in the figure) for pressure signal input.

[0085] Without installing a pressure sensor, the connector hole 107 for pressure signal input is threaded to the internal hexagonal plug 403, which has its own plug sealing gasket.

[0086] This configuration further enhances data detection and processing capabilities, meeting various needs in practical use.

[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An ultrasonic water meter meter head apparatus, characterized by, The meter head shell, the meter head upper cover, the battery box assembly, the junction box assembly and the mainboard box assembly are included. The bottom of the meter head shell is used for connecting the preset junction port of the meter body, and the meter head upper cover is tightly closed on the top of the meter head shell and is in sealing and fixed connection with the meter head shell. The outer side wall of the meter head shell near the bottom is processed with a battery box mounting hole, and the outer side wall of the meter head shell corresponding to the battery box mounting hole is provided with a mounting boss, and a limiting groove is processed around the battery box mounting hole on the mounting boss. The battery box assembly includes a battery box, a battery pack, a power supply line and a battery box protection cover; the battery box is a box body with an open end facing the inner cavity of the meter head shell, the open end of the battery box passes through the battery box mounting hole and is located in the inner cavity of the meter head shell; the outer periphery of the closed end of the battery box is provided with a limiting ring matched with the limiting groove, and a sealing gasket is arranged between the limiting ring and the limiting groove; the battery box protection cover is tightly pressed on the closed end of the battery box and is fixedly connected with the mounting boss. The battery pack is fixed in the battery box, one end of the power supply line extends into the battery box from the open end of the battery box and is electrically connected with the battery pack, and the other end of the power supply line is electrically connected with the junction box assembly. The mainboard box assembly is located in the upper part of the inner cavity of the meter head shell near the meter head upper cover, and the junction box assembly is located between the mainboard box assembly and the battery box assembly.

2. The ultrasonic water meter meter head apparatus of claim 1, wherein, The battery box is provided with a groove corresponding to the outer side of the battery box mounting hole, and an O-shaped sealing ring is embedded in the groove; the battery box is filled with sealing glue.

3. The ultrasonic water meter meter head apparatus of claim 2, wherein, The battery box protection cover and the mounting boss are fixedly connected through an internal hexagonal cylindrical screw, the head of the internal hexagonal cylindrical screw is located in the counterbore of the battery box protection cover, and a screw protection cover is also inserted into the counterbore of the battery box protection cover.

4. The ultrasonic water meter meter head apparatus of any one of claims 1-3, wherein, The top of the meter head shell is coaxially provided with an inner ring support wall and an outer ring support wall, the height of the inner ring support wall is less than the height of the outer ring support wall, a plurality of mainboard box mounting seats are uniformly distributed between the inner ring support wall and the outer ring support wall, and a plurality of upper cover mounting seats are arranged at the port of the outer ring support wall. The mainboard box assembly is tightly closed at the port of the inner ring support wall and is fixedly connected with the mainboard box mounting seat, and the meter head upper cover is tightly closed on the outer ring support wall and is fixedly connected with the upper cover mounting seat.

5. The ultrasonic water meter meter head apparatus of claim 4, wherein, The mainboard box assembly includes a mainboard box and a mainboard, the mainboard box is a transparent box with an open lower part, the mainboard is installed in the mainboard box, and the display area of the mainboard faces the top of the mainboard box; an annular plate is connected to the outer periphery of the middle part of the mainboard box, a ring-shaped groove is formed in the bottom surface of the annular plate, the ring-shaped groove is tightly closed at the port of the inner ring support wall, and a sealing gasket is embedded in the ring-shaped groove, and the annular plate is installed on the mainboard box mounting seat through a screw.

6. The ultrasonic water meter meter head apparatus of claim 5, wherein, A window corresponding to the display area of the mainboard is formed in the center of the meter head upper cover, the meter head upper cover is fixedly connected with the upper cover mounting seat through an internal hexagonal cylindrical screw, the head of the internal hexagonal cylindrical screw is located in the counterbore of the meter head upper cover, and a screw protection cover is also inserted into the counterbore of the meter head upper cover.

7. The ultrasonic water meter meter head apparatus of claim 6, wherein, The outer periphery of the port of the outer ring supporting wall is provided with a positioning table, and the watch head upper cover is provided with a positioning ring corresponding to the positioning table.

8. The ultrasonic water meter meter head apparatus of claim 6, wherein, A watch cover is further included, which is hinged to one side of the watch head upper cover through a horizontally arranged tooth-shaped elastic pin, and the watch head upper cover is provided with a clamping interface on the side opposite to the tooth-shaped elastic pin.

9. The ultrasonic water meter meter head apparatus of claim 4, wherein, The junction box assembly includes a junction box and a junction circuit board, the junction box includes a buckle-connected junction box upper cover and a junction box body, and an inner wall of the bottom of the junction box body is provided with a connecting column.

10. The ultrasonic water meter meter head apparatus of claim 4, wherein, An output line assembly is further included, which includes an output line, a metal waterproof cable joint and a waterproof connector, the junction hole is communicated with the inner cavity and the outside of the watch head shell, and an inner thread is arranged on one end of the junction hole close to the outside; One end of the metal waterproof cable joint is connected with the inner thread of the junction hole, and the other end of the metal waterproof cable joint is located outside the watch head shell, and a joint sealing ring is arranged between the metal waterproof cable joint and the outer wall surface of the watch head shell; One end of the output line is inserted into the inside of the watch head shell and is electrically connected with the junction box assembly, the other end of the output line is sequentially passed through the junction hole and the metal waterproof cable joint and is electrically connected with the waterproof connector, and the inside of one end of the metal waterproof cable joint close to the inner cavity of the watch head shell is filled with sealing glue. One end of the output line is inserted into the inside of the watch head shell and is electrically connected with the junction box assembly, the other end of the output line is sequentially passed through the junction hole and the metal waterproof cable joint and is electrically connected with the waterproof connector, and the inside of one end of the metal waterproof cable joint close to the inner cavity of the watch head shell is filled with sealing glue.

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