A small-caliber wireless remote water meter

Abstract

The present invention relates to the technical field of wireless remote water meter, and discloses a small-caliber wireless remote water meter, including a water meter, a main pipe is installed on the top of the water meter, and two ends of the main pipe are rotatably connected with auxiliary pipes; a biting mechanism is arranged on the auxiliary pipe, and the biting mechanism includes a mounting ring, the mounting ring is rotatably sleeved on the auxiliary pipe, and the side of the mounting ring is rotatably connected with multiple groups of pressure rods, each group of the pressure rods includes two, and each group of the pressure rods is movably sleeved with a slider, a pressure plate is fixedly installed on one side of the slider, and a spur is provided on one side of the pressure plate. The present invention bites the water pipe through the pressure plate and the spur during installation to prevent the water pipe and the auxiliary pipe from rotating in the same direction when the auxiliary pipe is screwed into the water pipe, which makes it difficult for the auxiliary pipe to be screwed in. The auxiliary pipe and the mounting ring are driven to rotate in the opposite direction by the transmission mechanism, and the operation is simple, and no external tools are required, so as to avoid the inconvenience of using tools when installing in a dead angle.

Description

Technical Field

[0001] The invention belongs to the technical field of wireless remote water meters, and in particular relates to a small-caliber wireless remote water meter. Background Art

[0002] As a water meter measurement industry in instrumentation, smart water meters, as the basis for measuring and charging water resources, are also facing the test of subverting the traditional metering and charging model. The traditional card meter management form of pre-sale water and the model of pre-deposit water fees will gradually fade out with the rise of the Internet. A water management, water fee and charging management model based on radio remote data transmission and Internet data transmission will be born with the emergence of integrated urban water management.

[0003] However, when installing the existing water meter, the water pipe needs to be cut open, and one end of the water meter needs to be screwed into the water pipe while one end of the water pipe is clamped and fixed by an external tool. This operation method makes it difficult to screw the two end connectors of the water meter into the water pipe at the same time. Not only is the operation complicated and the process slow, but when the installation position is in a dead corner such as a corner, it is inconvenient to use an external tool to clamp it. At the same time, the water meter itself is large in size and inconvenient to rotate, resulting in inconvenience in installation.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] In order to solve the technical problem that the existing water meter needs to cut the water pipe when installing, and screw one end of the water meter into the water pipe while clamping and fixing one end of the water pipe with an external tool, it is difficult to screw the two end joints of the water meter into the water pipe at the same time. Not only is the operation complicated and the process slow, but when the installation position is in a dead corner such as a corner, it is inconvenient to clamp with an external tool. At the same time, the water meter itself is large and inconvenient to rotate, resulting in inconvenient installation, the basic concept of the technical solution adopted by the present invention is:

[0006] A small-caliber wireless remote water meter comprises a water meter, a main pipe is installed on the top of the water meter, two ends of the main pipe are rotatably connected with auxiliary pipes, and threads are provided on the auxiliary pipes;

[0007] The secondary pipe is provided with a biting mechanism, which includes a mounting ring, which is rotatably sleeved on the secondary pipe, and the side of the mounting ring is rotatably connected to multiple groups of pressure rods, each group of the pressure rods includes two, and each group of the pressure rods is movably sleeved with a slider, a pressure plate is fixedly installed on one side of the slider, and a spur is opened on one side of the pressure plate;

[0008] The secondary pipeline is provided with a first transmission mechanism, and the transmission mechanism includes a first gear ring, a second gear ring and a first gear, one end of the first gear ring is fixedly mounted on one end of the mounting ring, one end of the second gear ring is fixedly mounted with a support plate, the support plate is fixedly sleeved on one end of the secondary pipeline close to the main pipeline, two sides of the first gear are respectively meshed with the first gear ring and the second gear ring, a sleeve is movably sleeved on the outer side of the secondary pipeline, the first gear is rotatably connected to the outer side of the sleeve, a plurality of fixed plates distributed at equal intervals are fixedly mounted on the outer side of the sleeve, an outer sleeve is fixedly mounted on the outer side of the fixed plate, one end of the outer sleeve is movably sleeved on one end of the main pipeline, and a second gear is provided on the end of the outer sleeve close to the main pipeline;

[0009] A second transmission mechanism is provided on one side of the main pipeline, and the second transmission mechanism includes an outer sleeve, and two inner rods are movably inserted inside the outer sleeve. A third gear is fixedly installed on the outer end of the inner rod, and one side of the third gear is meshed and connected to one side of the second gear.

[0010] As a preferred embodiment of the present invention, four groups of pressure rods are provided, and a pressure block is fixedly installed on the outer end of each group of pressure rods, the curvature of the inner wall of the pressure block is matched with the curvature of the outer wall of the pressure plate, a torsion spring is installed at the connection between the pressure rod and the mounting ring, and a push rod is fixedly installed at the end of the pressure rod away from the pressure block, and the axial direction of the push rod forms an angle of 135 degrees with the axial direction of the pressure rod, and the pressure plate and the slider are slid so that they are at the end of the pressure rod close to the pressure block. At this time, the torsion force of the torsion spring drives the pressure rod to tilt, thereby causing the pressure plate to tilt.

[0011] As a preferred embodiment of the present invention, a swivel is movably sleeved on the outer side of the mounting ring, and four equally spaced arc-shaped surfaces are provided on the outer side of the swivel, and a guide slope is provided at one end of the arc-shaped surface, and the guide slope and the arc-shaped surface are both matched with the push rod. The water pipe is aligned with the auxiliary pipe, and the swivel is rotated. The swivel presses against the push rod through the guide slope and drives the push rod to move upward. The push rod drives the pressure rod to rotate, and drives the pressure plate to rotate together with the pressure block. When the swivel rotates to a state where the arc-shaped surface is aligned with the push rod, the pressure plate bites the water pipe through the piercing, thereby fixing the mounting ring and the water pipe.

[0012] As a preferred embodiment of the present invention, one end of the outer sleeve is movably sleeved on the outside of the mounting ring, and the outer sleeve plays a protective role for the first gear ring, the second gear ring and the first gear.

[0013] As a preferred embodiment of the present invention, two mounting blocks are fixedly installed on one side of the main pipeline, and the outer sleeve is movably inserted on the two mounting blocks. Support blocks are fixedly installed on the top of the two mounting blocks, and a connecting shaft is movably inserted on the support block. The top of the connecting shaft extends to the outside of the top of the main pipeline, and a rotating plate is fixedly installed on the top of the connecting shaft.

[0014] As a preferred embodiment of the present invention, a first bevel gear is fixedly sleeved on the outer sleeve, the first bevel gear is located between two mounting blocks, one side of the first bevel gear is meshingly connected with a second bevel gear, the top of the second bevel gear is fixedly installed on the bottom of the connecting shaft, and the rotating plate is rotated, the rotating plate drives the connecting shaft to rotate, the connecting shaft drives the second bevel gear to rotate, the second bevel gear drives the first bevel gear to rotate through meshing, and the first bevel gear drives the outer sleeve to rotate.

[0015] As a preferred embodiment of the present invention, a first groove is provided inside the outer sleeve, and a second groove is provided outside the inner rod, the first groove and the second groove are adapted to each other, the outer sleeve drives the inner rod to rotate through the first groove and the second groove, and the inner rod drives the third gear to rotate.

[0016] As a preferred embodiment of the present invention, a plurality of telescopic rods are fixedly installed at one end of the two mounting blocks away from each other, and a shell is fixedly installed at the other end of the telescopic rod. One side of the shell is adapted to the curvature of the outer wall of the outer sleeve. The shell is movably sleeved on the third gear, and the inner rod is movably plugged into the shell. The third gear drives the second gear to rotate through meshing, and the second gear drives the outer sleeve to rotate.

[0017] As a preferred embodiment of the present invention, a guard plate is fixedly installed between the two mounting blocks, and the guard plate plays a role in protecting the first bevel gear and the second bevel gear.

[0018] As a preferred embodiment of the present invention, both ends of the main pipe are telescopic pipes. During installation, the main pipe is in a contracted state. When the secondary pipe is screwed into the water pipe, the secondary pipe pulls the main pipe to extend, thereby adapting to the change in length of the secondary pipe.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The present invention bites the water pipe through the pressure plate and the thorns during installation to prevent the auxiliary pipe from being difficult to be screwed in due to the water pipe and the auxiliary pipe rotating in the same direction when the auxiliary pipe is screwed into the water pipe. The auxiliary pipe and the installation ring are driven to rotate in opposite directions through the transmission mechanism. The operation is simple and no external tools are required, thus avoiding the inconvenience of using tools when installing in a dead angle.

[0021] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In the attached picture:

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the structure of the secondary pipeline of the present invention;

[0025] Figure 3 This is a schematic diagram of the internal structure of the outer sleeve of the present invention;

[0026] Figure 4 This is a schematic diagram of the secondary pipeline explosion structure of the present invention;

[0027] Figure 5 This is a schematic diagram of the structure of the third gear of the present invention;

[0028] Figure 6 It is a structural schematic diagram of the first bevel gear and the second bevel gear of the present invention;

[0029] Figure 7 It is a schematic diagram of the internal structure of the outer sleeve of the present invention.

[0030] In the figure:

[0031] 100, water meter; 101, main pipe; 102, auxiliary pipe; 103, thread; 104, mounting ring; 105, pressure rod; 106, pressure block; 107, slider; 108, pressure plate; 109, spur; 110, push rod; 111, torsion spring; 112, swivel; 113, guide slope; 114, arc surface;

[0032] 200, first gear ring; 201, support plate; 202, second gear ring; 203, sleeve ring; 204, first gear; 205, fixing plate; 206, outer sleeve; 207, second gear;

[0033] 300, mounting block; 301, outer sleeve; 302, inner rod; 303, first groove; 304, second groove; 305, third gear; 306, outer shell; 307, guard plate; 308, first bevel gear; 309, second bevel gear; 310, connecting shaft; 311, support block; 312, rotating plate; 313, telescopic rod. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention.

[0035] Embodiment 1:

[0036] like Figures 1 to 7 As shown, a small-caliber wireless remote water meter includes a water meter 100, a main pipe 101 is installed on the top of the water meter 100, and two ends of the main pipe 101 are rotatably connected to auxiliary pipes 102, and threads 103 are opened on the auxiliary pipe 102;

[0037] The secondary pipe 102 is provided with a bite mechanism, which includes a mounting ring 104, which is rotatably sleeved on the secondary pipe 102, and the side of the mounting ring 104 is rotatably connected to multiple groups of pressure rods 105, each group of pressure rods 105 includes two, and each group of pressure rods 105 is movably sleeved with a slider 107, and a pressure plate 108 is fixedly installed on one side of the slider 107, and a spur 109 is provided on one side of the pressure plate 108;

[0038] A first transmission mechanism is provided on the secondary pipeline 102, and the transmission mechanism includes a first gear ring 200, a second gear ring 202 and a first gear 204. One end of the first gear ring 200 is fixedly mounted on one end of the mounting ring 104, and one end of the second gear ring 202 is fixedly mounted with a support plate 201. The support plate 201 is fixedly sleeved on one end of the secondary pipeline 102 close to the main pipeline 101. Both sides of the first gear 204 are respectively meshed with the first gear ring 200 and the second gear ring 202. A sleeve 203 is movably sleeved on the outer side of the secondary pipeline 102, and the first gear 204 is rotatably connected to the outer side of the sleeve 203. A plurality of equally spaced fixed plates 205 are fixedly mounted on the outer side of the sleeve 203, and an outer sleeve 206 is fixedly mounted on the outer side of the fixed plate 205. One end of the outer sleeve 206 is movably sleeved on one end of the main pipeline 101, and a second gear 207 is provided on the end of the outer sleeve 206 close to the main pipeline 101.

[0039] A second transmission mechanism is provided on one side of the main pipeline 101, and the second transmission mechanism includes an outer sleeve 301, and two inner rods 302 are movably inserted inside the outer sleeve 301. A third gear 305 is fixedly installed on the outer end of the inner rod 302, and one side of the third gear 305 is meshed and connected to one side of the second gear 207.

[0040] The present invention bites the water pipe through the pressing plate 108 and the thorn 109 during installation to prevent the water pipe 102 from rotating in the same direction with the auxiliary pipe 102 when the auxiliary pipe 102 is screwed into the water pipe, which makes it difficult for the auxiliary pipe 102 to be screwed in. The auxiliary pipe 102 and the installation ring 104 are driven to rotate in the opposite direction by the transmission mechanism. The operation is simple and no external tools are required, which avoids the inconvenience of using tools when installing in a dead angle.

[0041] like Figure 1 , 2As shown in FIGS. 3 and 4, in a specific embodiment, four groups of pressure rods 105 are provided, and a pressure block 106 is fixedly installed at the outer end of each group of pressure rods 105, and the inner wall curvature of the pressure block 106 matches the outer wall curvature of the pressure plate 108. A torsion spring 111 is installed at the connection between the pressure rod 105 and the mounting ring 104, and a push rod 110 is fixedly installed at one end of the pressure rod 105 away from the pressure block 106, and the axial direction of the push rod 110 forms an angle of 135 degrees with the axial direction of the pressure rod 105. In this setting, the sliding pressure plate 108 and the slider 107 are located at the end of the pressure rod 105 close to the pressure block 106. At this time, the torsion of the torsion spring 111 drives the pressure rod 105 to tilt up, thereby causing the pressure plate 108 to tilt up.

[0042] like Figure 3 , 4 As shown, further, a swivel 112 is movably sleeved on the outside of the mounting ring 104, and four equally spaced arc surfaces 114 are provided on the outside of the swivel 112, and a guide slope 113 is provided at one end of the arc surface 114, and the guide slope 113 and the arc surface 114 are both adapted to the push rod 110. In this configuration, the water pipe is aligned with the auxiliary pipe 102, and the swivel 112 is rotated, and the swivel 112 abuts against the push rod 110 through the guide slope 113, and drives the push rod 110 to move upward, and the push rod 110 drives the pressure rod 105 to rotate, and drives the pressure plate 108 to rotate together with the pressure block 106, and when the swivel 112 rotates to a state where the arc surface 114 is aligned with the push rod 110, the pressure plate 108 bites the water pipe through the spurs 109, so as to achieve the fixation of the mounting ring 104 and the water pipe.

[0043] Embodiment 2:

[0044] like Figure 3 As shown, in a specific embodiment, one end of the outer sleeve 206 is movably sleeved on the outer side of the mounting ring 104. In this configuration, the outer sleeve 206 plays a protective role for the first gear ring 200, the second gear ring 202 and the first gear 204.

[0045] like Figure 5 , 6As shown, further, two mounting blocks 300 are fixedly installed on one side of the main pipeline 101, and the outer sleeve 301 is movably plugged into the two mounting blocks 300. A support block 311 is fixedly installed on the top of the two mounting blocks 300, and a connecting shaft 310 is movably plugged into the supporting block 311. The top of the connecting shaft 310 extends to the outside of the top of the main pipeline 101. A rotating plate 312 is fixedly installed on the top of the connecting shaft 310. A first bevel gear 308 is fixedly sleeved on the outer sleeve 301. The first bevel gear 308 is located between the two mounting blocks 300. A second bevel gear 309 is meshedly connected to one side of the first bevel gear 308, and the top of the second bevel gear 309 is fixedly installed at the bottom of the connecting shaft 310. In this setting, the rotating plate 312 is rotated, and the rotating plate 312 drives the connecting shaft 310 to rotate, and the connecting shaft 310 drives the second bevel gear 309 to rotate. The second bevel gear 309 drives the first bevel gear 308 to rotate through meshing, and the first bevel gear 308 drives the outer sleeve 301 to rotate.

[0046] Embodiment 3:

[0047] like Figure 7 As shown, in a specific embodiment, a first groove 303 is formed inside the outer sleeve 301, and a second groove 304 is formed outside the inner rod 302, and the first groove 303 and the second groove 304 are adapted to each other. In this configuration, the outer sleeve 301 drives the inner rod 302 to rotate through the first groove 303 and the second groove 304, and the inner rod 302 drives the third gear 305 to rotate.

[0048] like Figure 5 , 6 As shown, further, a plurality of telescopic rods 313 are fixedly mounted on one end of the two mounting blocks 300 away from each other, and a housing 306 is fixedly mounted on the other end of the telescopic rod 313. One side of the housing 306 is adapted to the curvature of the outer wall of the outer sleeve 206. The housing 306 is movably sleeved on the third gear 305, and the inner rod 302 is movably plugged into the housing 306. In this configuration, the third gear 305 drives the second gear 207 to rotate by meshing, and the second gear 207 drives the outer sleeve 206 to rotate.

[0049] like Figure 1 , 2 As shown in FIG. 5 , further, a guard plate 307 is fixedly installed between the two mounting blocks 300 . In this configuration, the guard plate 307 plays a protective role for the first bevel gear 308 and the second bevel gear 309 .

[0050] like Figure 1 , 2As shown in , 3 and 4, further, both ends of the main pipe 101 are telescopic pipes. In this setting, when installing, the main pipe 101 is in a contracted state, and when the secondary pipe 102 is screwed into the water pipe, the secondary pipe 102 pulls the main pipe 101 to extend, thereby adapting to the change in the length of the secondary pipe 102.

[0051] The implementation principle of a small-diameter wireless remote water meter of this embodiment is as follows: when installing, first cut out a distance from the installation position of the water pipe, put the main pipe 101 in a retracted state, slide the pressure plate 108 and the slider 107, so that it is at the end of the pressure rod 105 close to the pressure block 106, at this time, the torsion force of the torsion spring 111 drives the pressure rod 105 to tilt up, so that the pressure plate 108 tilts up, aligns the water pipe with the auxiliary pipe 102, rotates the rotating ring 112, the rotating ring 112 abuts against the push rod 110 through the guide inclined surface 113, and drives the push rod 110 to move upward, the push rod 110 drives the pressure rod 105 to rotate, and drives the pressure plate 108 to rotate together with the pressure block 106, when the rotating ring 112 rotates to the state where the arc surface 114 is aligned with the push rod 110, the pressure plate 108 bites the water pipe through the spurs 109, and the installation ring 104 is fixed to the water pipe;

[0052] At this time, the rotating plate 312 is rotated, and the rotating plate 312 drives the connecting shaft 310 to rotate. The connecting shaft 310 drives the second bevel gear 309 to rotate. The second bevel gear 309 drives the first bevel gear 308 to rotate by meshing. The first bevel gear 308 drives the outer sleeve 301 to rotate. The outer sleeve 301 drives the inner rod 302 to rotate through the first groove 303 and the second groove 304. The inner rod 302 drives the third gear 305 to rotate. The third gear 305 drives the second gear 207 to rotate by meshing. The second gear 207 drives the outer sleeve 206 to rotate. The outer sleeve 206 drives the collar 203 to rotate through the fixing plate 205. The collar 203 drives the first gear 204 to rotate. The gear ring 200 is fixed to the water pipe by the mounting ring 104, so that the first gear 204 drives the second gear ring 202 to rotate, the second gear ring 202 drives the support plate 201 to rotate, the support plate 201 drives the auxiliary pipe 102 to rotate, and the auxiliary pipe 102 is screwed into the water pipe through the thread 103. The labor saving is achieved through the action of the rotating plate 312, the third gear 305, the second gear 207 and the first gear 204. In the process of the auxiliary pipe 102 being screwed into the water pipe, the auxiliary pipe 102 pulls the main pipe 101 to extend, and at the same time, the auxiliary pipe 102 drives the mounting ring 104 to move, and the mounting ring 104 drives the pressure rod 105 to slide in the slider 107, thereby adapting to the length change of the auxiliary pipe 102.

Claims

1. A small-caliber wireless remote water meter, comprising a water meter (100), characterized in that: A main pipe (101) is installed on the top of the water meter (100), and auxiliary pipes (102) are rotatably connected to both ends of the main pipe (101), and threads (103) are provided on the auxiliary pipe (102); The secondary pipe (102) is provided with a locking mechanism, the locking mechanism comprising a mounting ring (104), the mounting ring (104) is rotatably sleeved on the secondary pipe (102), a side of the mounting ring (104) is rotatably connected to a plurality of groups of pressure rods (105), each group of the pressure rods (105) comprises two, each group of the pressure rods (105) is movably sleeved with a slider (107), a pressure plate (108) is fixedly mounted on one side of the slider (107), and a spur (109) is provided on one side of the pressure plate (108); The pressure rods (105) are provided in four groups, and a pressure block (106) is fixedly installed on the outer end of each group of the pressure rods (105), the curvature of the inner wall of the pressure block (106) is adapted to the curvature of the outer wall of the pressure plate (108), a torsion spring (111) is installed at the connection between the pressure rod (105) and the mounting ring (104), and a push rod (110) is fixedly installed at one end of the pressure rod (105) away from the pressure block (106), and the axial direction of the push rod (110) forms an angle of (135) degrees with the axial direction of the pressure rod (105); A rotating ring (112) is movably sleeved on the outside of the mounting ring (104), and four equally spaced arc surfaces (114) are provided on the outside of the rotating ring (112), and a guiding inclined surface (113) is provided at one end of the arc surface (114), and both the guiding inclined surface (113) and the arc surface (114) are adapted to the push rod (110); The secondary pipeline (102) is provided with a first transmission mechanism, the transmission mechanism comprising a first gear ring (200), a second gear ring (202) and a first gear (204); one end of the first gear ring (200) is fixedly mounted on one end of the mounting ring (104); one end of the second gear ring (202) is fixedly mounted with a support plate (201); the support plate (201) is fixedly sleeved on one end of the secondary pipeline (102) close to the main pipeline (101); two sides of the first gear (204) are respectively connected to the first gear ring (200) and the second gear ring (202). 202) are meshed with each other, a collar (203) is movably sleeved on the outside of the secondary pipe (102), the first gear (204) is rotatably connected to the outside of the collar (203), a plurality of equally spaced fixed plates (205) are fixedly installed on the outside of the collar (203), an outer sleeve (206) is fixedly installed on the outside of the fixed plate (205), one end of the outer sleeve (206) is movably sleeved on one end of the main pipe (101), and a second gear (207) is provided on one end of the outer sleeve (206) close to the main pipe (101); A second transmission mechanism is provided on one side of the main pipeline (101), the second transmission mechanism comprising an outer sleeve (301), two inner rods (302) being movably inserted inside the outer sleeve (301), a third gear (305) being fixedly mounted on the outer end of the inner rod (302), and one side of the third gear (305) being meshingly connected to one side of the second gear (207).

2. A small-caliber wireless remote water meter according to claim 1, characterized in that: One end of the outer sleeve (206) is movably sleeved on the outside of the mounting ring (104).

3. A small-caliber wireless remote water meter according to claim 1, characterized in that: Two mounting blocks (300) are fixedly installed on one side of the main pipeline (101), and the outer sleeve (301) is movably plugged into the two mounting blocks (300). Support blocks (311) are fixedly installed on the tops of the two mounting blocks (300), and a connecting shaft (310) is movably plugged into the supporting blocks (311). The top of the connecting shaft (310) extends to the outside of the top of the main pipeline (101), and a rotating plate (312) is fixedly installed on the top of the connecting shaft (310).

4. A small-caliber wireless remote water meter according to claim 1, characterized in that: A first bevel gear (308) is fixedly sleeved on the outer sleeve (301), the first bevel gear (308) is located between the two mounting blocks (300), one side of the first bevel gear (308) is meshedly connected with a second bevel gear (309), and the top of the second bevel gear (309) is fixedly mounted on the bottom of the connecting shaft (310).

5. A small-caliber wireless remote water meter according to claim 1, characterized in that: A first groove (303) is formed inside the outer sleeve (301), and a second groove (304) is formed outside the inner rod (302), and the first groove (303) and the second groove (304) are adapted to each other.

6. A small-caliber wireless remote water meter according to claim 4, characterized in that: A plurality of telescopic rods (313) are fixedly mounted on one end of the two mounting blocks (300) that is away from each other, and a shell (306) is fixedly mounted on the other end of the telescopic rod (313). One side of the shell (306) is adapted to the curvature of the outer wall of the outer sleeve (206). The shell (306) is movably sleeved on the third gear (305), and the inner rod (302) is movably plugged into the shell (306).

7. A small-caliber wireless remote water meter according to claim 1, characterized in that: A guard plate (307) is fixedly installed between the two mounting blocks (300).

8. A small-caliber wireless remote water meter according to claim 1, characterized in that: Both ends of the main pipeline (101) are telescopic pipelines.

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