Anti-disassembly electromagnetic water meter

Abstract

The utility model relates to the technical field of electromagnetic water meters, and discloses an anti-disassembly electromagnetic water meter which comprises a meter shell, a meter cover and a fixing bolt, the fixing bolt can penetrate through the meter cover and is in threaded connection with the meter shell, the anti-disassembly electromagnetic water meter further comprises a protection cover and a fixing piece, the protection cover is annularly arranged and covers the meter cover, and the fixing piece is arranged on the meter shell. The fixing piece can limit the protective cover from being separated from the meter cover, the head of the fixing bolt is arranged between the meter cover and the protective cover in a covering mode, and the electromagnetic water meter has the effect of preventing the electromagnetic water meter from being detached.

Description

Technical Field

[0001] This application relates to the technical field of electromagnetic water meters, and in particular to an anti-disassembly electromagnetic water meter. Background Art

[0002] As an important water metering tool, electromagnetic water meters play a crucial role in modern urban management. An electromagnetic water meter mainly includes a measuring pipe for the conductive liquid to pass through, and a meter head fixedly connected to the upper end of the measuring pipe. Since the meter head contains precision components such as a battery and a circuit board, once the internal circuit board is damaged, it may not only cause the water meter to malfunction, but also bring economic losses to the water supply company.

[0003] To solve the above problems, in the related art, a meter cover is generally provided and fixed to the meter housing of the meter head by bolts, so as to protect the electronic structure inside the meter housing through the meter cover; a dial for convenient meter reading is generally provided at the end of the meter housing, so an opening and closing cover is also hinged at the center of the meter cover for opening the cover to read the meter. At the same time, in order to prevent the meter cover from being disassembled by others, a lead seal is also provided between the meter cover and the meter housing.

[0004] In view of the above related art, although a lead seal is set to prevent disassembly, due to the limitations of the lead seal material itself, it is easily cut or damaged, resulting in the meter cover being opened. Therefore, the existing anti-disassembly means still have deficiencies in resisting external malicious damage. Utility Model Content

[0005] In order to prevent the electromagnetic water meter from being disassembled, this application provides an anti-disassembly electromagnetic water meter.

[0006] This application provides an anti-disassembly electromagnetic water meter, adopting the following technical solution:

[0007] An anti-disassembly electromagnetic water meter includes a meter housing, a meter cover and fixing bolts. The fixing bolts can pass through the meter cover and be threadedly connected to the meter housing. It further includes a protective cover and a fixing member. The protective cover is circumferentially arranged and covers the meter cover. The fixing member can limit the protective cover from disengaging from the meter cover, and the head of the fixing bolt is covered between the meter cover and the protective cover.

[0008] By adopting the above technical solution, the design of the protective cover and the fixing member is introduced, so that the head of the fixing bolt is covered between the meter cover and the protective cover. The rotation of the fixing bolt is restricted by the protective cover, thereby achieving the anti-disassembly effect of the electromagnetic water meter. And the fixing member restricts the disengagement of the protective cover, that is, it can fix the protective cover and it is also difficult to disassemble the protective cover. Compared with the way of only setting a lead seal, the disassembly difficulty is fundamentally improved and the anti-disassembly effect is better.

[0009] Optionally, the protective cover includes a bottom plate, an inner plate and an outer plate, and the bottom plate is provided with a receiving groove for receiving the head of the fixing bolt.

[0010] By adopting the above technical solution, this design ensures that the protective cover can not only fit on the surface cover, but also protect the head of the fixing bolt, so as to protect the fixing bolt while ensuring the stability of the protective cover.

[0011] Optionally, the fixing member is a fixing block arranged on the side wall of the inner plate, the lower end of the fixing block is chamfered on the side facing away from the outer plate, the side wall of the cover is provided with a fixing groove for the fixing block to be clamped, and a plurality of fixing blocks are arranged at intervals along the circumference of the inner plate.

[0012] By adopting the above technical solution, the matching relationship between the fixing block and the fixing slot adopts a snap-on connection mode, that is, when the fixing block is inserted into the fixing slot, the chamfer design allows the fixing block to be smoothly snapped into the fixing slot, thereby achieving fixation. At the same time, once the installation is completed, the protective cover cannot be easily disassembled. Such a design not only improves the fixing strength of the protective cover from a structural perspective, but also increases the difficulty of malicious damage through the locking structure design.

[0013] Optionally, the protective cover is made of PC plastic.

[0014] By adopting the above technical solutions, the PC material has good weather resistance, impact resistance and corrosion resistance, and can maintain stable performance in various harsh environments, extending the service life of the water meter. At the same time, the material also has a certain deformation ability, which can facilitate the installation of the protective cover.

[0015] Optionally, an outer edge plate is provided at the upper end of the watch case, a connecting seat is provided on the lower surface of the outer edge plate, a thread groove is opened on the outer edge plate for the threaded connection of the fixing bolt, and the thread groove extends downward into the connecting seat. After the fixing bolt passes through the watch cover, it can continue to pass through the outer edge plate and be threadedly connected with the thread groove.

[0016] By adopting the above technical solution, the outer edge plate arranged at the upper end of the watch case and the thread design thereon enable the fixing bolt to pass through the watch cover and continue to be threadedly connected with the thread groove in the connecting seat, thereby ensuring the connection effect of the watch cover.

[0017] Optionally, a connecting ring is provided on the lower surface of the watch cover, and a connecting groove for plugging the connecting ring is provided in the watch case.

[0018] Optionally, the connecting ring is threadedly connected to the side wall of the connecting groove.

[0019] By adopting the above technical solution, the plug-in fit between the connecting ring and the connecting groove can position the watch cover and improve the assembly efficiency; further, the threaded connection method is adopted to make the connection between the watch cover and the watch case tighter and more reliable, effectively preventing loosening or falling off caused by vibration or external force.

[0020] Optionally, lead seal holes for the lead seal to pass through are provided on the watch case, the watch cover, and the protective cover.

[0021] By adopting the above technical solution, lead seal holes are provided on the watch case, the watch cover, and the protective cover, facilitating the installation of the lead seal for anti-tampering markings. As a traditional anti-tampering means, the lead seal can effectively deter and prevent illegal disassembly behavior, ensuring the authenticity and reliability of the water meter measurement. At the same time, the lead seal and the protective cover are used for double anti-tampering settings, effectively ensuring the anti-tampering effect.

[0022] In summary, the present application includes at least one of the following beneficial effects:

[0023] 1. Through the cooperation of the protective cover and the fixing member, the head of the fixing bolt can be buckled and protected to prevent the fixing bolt from being disassembled, thereby significantly improving the anti-tampering performance of the electromagnetic water meter;

[0024] 2. By providing lead seal holes to install the lead seal and cooperating with the protective cover for double anti-tampering settings, the anti-tampering effect is effectively ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic structural diagram of an embodiment of the present application;

[0026] Figure 2 is an exploded structural diagram of an embodiment of the present application;

[0027] Figure 3 is a sectional structural diagram of an embodiment of the present application.

[0028] Description of the reference numerals: 101, measuring pipe; 102, meter head; 1, watch case; 11, outer edge plate; 12, connecting seat; 13, connecting groove; 14, threaded groove; 2, watch cover; 21, connecting ring; 3, fixing bolt; 4, protective cover; 41, bottom plate; 411, receiving groove; 42, inner side plate; 43, outer side plate; 5, fixing member; 51, fixing block; 6, lead seal hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] The following is a further detailed description of the present application with reference to the Figures 1-3 drawings.

[0030] An embodiment of the present application discloses an anti-tampering electromagnetic water meter. Refer to Figure 1 and Figure 2, an electromagnetic water meter includes a measuring pipe 101 and a meter head 102, where the meter head 102 includes a meter housing 1, a meter cover 2, fixing bolts 3, a protective cover 4, and a fixing member 5. Among them, the meter housing 1 is a circular housing with a hollow interior. Electronic components are fixed inside the meter housing 1, and a dial for convenient meter reading is fixed at the upper part of the meter housing 1. The meter cover 2 is circular, with a central part protruding upward, and an opening and closing cover is hinged to facilitate observing the dial. The outer ring part of the meter cover 2 abuts against the upper end of the meter housing 1, and the fixing bolts 3 can pass through the meter cover 2 and be threadedly connected to the meter housing 1; thus, the meter cover 2 is fixed to the meter housing 1. The protective cover 4 is arranged circumferentially and is fixedly covered on the upper surface of the outer ring part of the meter cover 2 through the fixing member 5, so that the bolt head part of the fixing bolt 3 is covered between the meter cover 2 and the protective cover 4 to prevent others from rotating the fixing bolt 3, significantly improving the anti-disassembly performance.

[0031] Refer to Figure 2 and Figure 3 , in this embodiment, the protective cover 4 includes a bottom plate 41 and inner side plates 42 and outer side plates 43 arranged on both sides of the bottom plate 41. Among them, the inner side plates 42 and the outer side plates 43 are integrally formed with the bottom plate 41 and extend downward relative to the bottom plate 41. The upper surface of the bottom plate 41 protrudes upward, and a receiving groove 411 for receiving the head of the fixing bolt 3 is formed inside the protruding part. The upper surface of the protruding part is all chamfered, so as to better protect the fixing bolt 3. A plurality of fixing bolts 3 are arranged circumferentially along the meter cover 2, and the receiving grooves 411 are arranged in one-to-one correspondence with the fixing bolts 3 to increase the fixing strength between the meter cover 2 and the meter housing 1.

[0032] Refer to Figure 2 and Figure 3 , the fixing member 5 is a fixing block 51 arranged on the side wall of the inner side plate 42. A chamfer is provided on the side of the lower end of the fixing block 51 facing away from the outer side plate 43. A fixing groove for the fixing block 51 to be clamped is provided on the side wall of the meter cover 2. The fixing block 51 extends along the inner side plate 42 for a certain length, and gaps are provided at both ends of the inner side plate 42 connected to the fixing plate, so that when the protective cover 4 is covered on the meter cover 2, the fixing block 51 can be bent and deformed towards the outer side plate 43 through the action of the chamfered part. When the protective cover 4 is completely buckled on the meter cover 2, the fixing block 51 can be smoothly clamped into the fixing groove through the chamfered part, thereby forming a limit fixation to prevent the protective cover 4 from detaching upward from the meter cover 2. Optionally, in order to increase the fixing effect of the protective cover 4, a plurality of fixing blocks 51 are arranged at intervals circumferentially along the inner side plate 42 to achieve multi-point fixation.

[0033] Furthermore, the protective cover 4 is preferably made of PC plastic material, and the fixing block 51 and the protective cover 4 can be integrally formed. Through the above design, the protective cover 4 is fixed to the watch case 2 through the fixing block 51 during installation and is locked in cooperation with the design of the protective cover 4. Once the installation is completed, the protective cover 4 cannot be easily disassembled. Such a design not only improves the fixing strength of the protective cover 4 structurally but also increases the difficulty of malicious damage through the locking structure design.

[0034] Refer to Figure 2 and Figure 3 , in this embodiment, the horizontal cross-section of the watch case 1 is an annular shape, and an outer edge plate 11 is fixed to its upper end. The horizontal cross-section of the outer edge plate 11 is also an annular shape. When the watch cover 2 is closed on the watch case 1, its lower surface can be in contact with a part of the outer edge plate 11 of the watch case 1. Thread grooves 14 for threaded connection of the fixing bolts 3 are provided on the outer edge plate 11, so that the fixing bolts 3 can pass through the watch cover 2 and be threadedly connected to the thread grooves 14 on the outer edge plate 11; among them, the outer edge plate 11 mainly plays a role in increasing the contact area and providing a space for the fixing bolts 3 to pass through.

[0035] A connecting seat 12 is fixed to the lower surface of the outer edge plate 11. One side of the connecting seat 12 is connected to the side wall of the case. The connecting seat 12 is located below the thread groove 14, and the thread groove 14 extends downward into the connecting seat 12, thereby increasing the stability of the threaded connection with the fixing bolts 3 and further achieving the effect of sealing and isolating the bolts to prevent others from turning the fixing bolts 3.

[0036] Refer to Figure 2 and Figure 3 , a fixed connection ring 21 is provided on the lower surface of the watch cover 2, and a connection groove 13 for inserting the connection ring 21 is provided inside the watch case 1. Specifically, there is a gap between the side wall of the watch dial provided at the upper end inside the watch case 1 and the inner side wall of the watch case 1 to form a connection groove 13 for inserting the connection ring 21. Threads are provided on the side wall of the connection groove 13, that is, the outer side wall of the watch dial, so as to be threadedly connected to the connection ring 21 and ensure the tightness of the connection, effectively preventing loosening during use. On the contrary, in other embodiments, this threaded connection part can also be provided between the outer side wall of the connection ring 21 and the inner side wall of the watch case 1.

[0037] Refer to Figure 3 , optionally, to facilitate the connection between the watch cover 2 and the watch case 1, a chamfer can be provided on the outer side of the lower end of the connection ring 21; at the same time, a groove can be provided on the outer wall of the connection ring 21 to provide a certain deformation space for the connection ring 21 to ensure that the connection ring 21 can be smoothly inserted into the connection groove 13.

[0038] Refer to Figure 1 and Figure 2, lead seal holes 6 for inserting lead seals are provided on the watch case 1, the watch cover 2, and the protective cover 4. The lead seal holes 6 can be designed as round holes, and the positions of the lead seal holes 6 in each part are aligned to ensure that the lead seal can be inserted and fixed, improving the anti-tampering performance of the overall structure. The lead seal includes a locking rope and a lock (not shown in the figure). The locking rope part can pass through the corresponding lead seal hole 6, and the lock part can be cylindrical with an axial through hole provided in its center so that the locking rope can be fixed and locked after insertion. The specific locking method of the lead seal is prior art and will not be elaborated here.

[0039] Preferably, the lead seal as a whole is preferably made of stainless steel, which has good shear resistance. In other embodiments, the lead seal can also be made of other materials such as high-hardness plastics to ensure that the protective cover 4 cannot be disassembled without damaging the lead seal, further improving the safety performance of the product. Multiple groups of lead seal holes 6 are provided along the circumferential direction of the protective cover 4, and through multi-point positioning, the difficulty of being damaged is further increased.

[0040] The implementation principle of an anti-tampering electromagnetic water meter in an embodiment of the present application is as follows: When installing the battery water meter, the watch cover 2 is fixed to the watch case 1 through the fixing bolts 3, thereby protecting the electronic components in the watch case 1 from being damaged. Then, the protective cover 4 is covered on the cover body, and the head of the fixing bolt 3 is buckled into the receiving groove 411 for protection, performing the first anti-tampering design; finally, the lead seal is inserted through the lead seal hole 6 to perform the second anti-tampering design.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A tamper-proof electromagnetic water meter, characterized in that: The invention comprises a watch case (1), a watch cover (2) and a fixing bolt (3), wherein the fixing bolt (3) can pass through the watch cover (2) and be threadedly connected to the watch case (1), and further comprises a protective cover (4) and a fixing member (5), wherein the protective cover (4) is circumferentially arranged and covers the watch cover (2), and the fixing member (5) can limit the protective cover (4) from falling off the watch cover (2), and the head of the fixing bolt (3) is covered between the watch cover (2) and the protective cover (4).

2. The tamper-proof electromagnetic water meter according to claim 1, characterized in that: The protective cover (4) comprises a bottom plate (41), an inner plate (42) and an outer plate (43); the bottom plate (41) is provided with a receiving groove (411) for receiving the head of the fixing bolt (3).

3. The tamper-proof electromagnetic water meter according to claim 2, characterized in that: The fixing member (5) is a fixing block (51) arranged on the side wall of the inner plate (42); a chamfer is provided on a side of the lower end of the fixing block (51) facing away from the outer plate (43); a fixing groove for the fixing block (51) to be clamped is provided on the side wall of the cover (2); a plurality of fixing blocks (51) are arranged at intervals along the circumference of the inner plate (42).

4. The tamper-proof electromagnetic water meter according to claim 3, characterized in that: The protective cover (4) is made of PC plastic.

5. The tamper-proof electromagnetic water meter according to claim 1, characterized in that: An outer edge plate (11) is provided at the upper end of the watch case (1), and a connecting seat (12) is provided on the lower surface of the outer edge plate (11). A thread groove (14) is provided on the outer edge plate (11) for threaded connection of the fixing bolt (3), and the thread groove (14) extends downward into the connecting seat (12). After the fixing bolt (3) passes through the watch cover (2), it can continue to pass through the outer edge plate (11) and be threadedly connected to the thread groove (14).

6. The tamper-proof electromagnetic water meter according to claim 1, characterized in that: A connecting ring (21) is provided on the lower surface of the watch cover (2), and a connecting groove (13) for plugging the connecting ring (21) is provided in the watch case (1).

7. The tamper-proof electromagnetic water meter according to claim 6, characterized in that: The connecting ring (21) is threadedly connected to the side wall of the connecting groove (13).

8. The tamper-proof electromagnetic water meter according to any one of claims 1 to 7, characterized in that: The watch case (1), the watch cover (2) and the protective cover (4) are all provided with a lead seal hole (6) for a lead seal to pass through.

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