A water meter pressure cap dismounting tool

Abstract

This utility model relates to the field of loading and unloading tools, and in particular to a tool for removing and installing water meter caps. It includes a sleeve and a blind plate fixedly connected to one end of the sleeve. A handle extending outwards is connected to the sleeve wall. One end face of the blind plate and the inner wall of the sleeve form a fitting cavity for fitting onto the outside of the water meter cap. A through hole is provided on the blind plate, and a locking block that engages with the through hole to prevent rotation is provided inside the through hole. One end of the locking block extends into the fitting cavity and forms a locking end for locking into the slot of the water meter cap. By detachably connecting the end of the locking block away from the locking end to the blind plate with a detachable fastener, the locking block can be individually removed and replaced from the blind plate, reducing usage costs.

Description

Technical Field

[0001] This utility model relates to the field of loading and unloading tools, and in particular to a tool for removing and installing water meter caps. Background Technology

[0002] Dry water meters are typically used in branch lines of water injection stations or single-well water injection pipelines. They are mainly used to measure water volume. Usually, there is an upward-facing stepped surface in the vertical pipe of the water injection pipeline. The water meter cap is threaded and fixed to the vertical pipe, and the connection is sealed. The water meter is sealed and pressed onto the stepped surface of the vertical pipe through the water meter cap.

[0003] During use, water meters often experience blockages or jams due to poor water quality, welding slag introduced from welded pipelines or valves, or wear on the packing of the water injection pump. This necessitates timely cleaning of debris or timely inspection and replacement of the water meter core. In such cases, the water meter cap needs to be removed from the vertical pipe of the water injection pipeline to inspect or replace the water meter core.

[0004] When a water meter is in use, the water meter cap must withstand high pressure, so the total number of threads connecting the water meter cap to the vertical pipe is relatively large. Furthermore, prolonged use of the water meter can cause the cap to corrode and rust, making disassembly difficult. In the prior art, Chinese utility model patent CN205063872U, with an authorization announcement date of March 2, 2016, discloses an auxiliary tool for disassembling and assembling a water meter in an injection well. This utility model's water meter nut disassembly and assembly tool consists of a retaining ring, a retaining plate, a connector, and a handle. The retaining ring is a circular ring structure, the retaining plate is a cuboid welded inside the retaining ring, the connector is an internally threaded circular tube welded to the outside of the retaining ring, and the handle is a circular rod with threads at one end, connected to the threads of the connector. When using this utility model of water meter nut disassembly and assembly tool, put the retaining ring on the water meter cap, so that the retaining plate is inserted into the retaining groove of the water meter cap, and then connect the handle rod to the connector. The operator can disassemble the water meter cap by operating the handle rod.

[0005] However, prolonged use of the water meter nut removal and installation tool or frequent violent use of the tool can cause deformation of its clamping plate, making it unable to engage with the groove of the water meter cap. Furthermore, the clamping ring is welded to the clamping plate. In this case, the entire water meter nut removal and installation tool needs to be replaced, rather than the clamping plate alone, resulting in higher costs. Utility Model Content

[0006] The purpose of this utility model is to provide a water meter cap removal and installation tool to solve the problems of existing removal and installation tools, such as deformation of the clamping plate due to long-term use or frequent violent use, and the high cost due to the integral welding that makes it impossible to replace them individually.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0008] A water meter cap removal and installation tool includes a sleeve and a blind plate fixedly connected to one end of the sleeve. A handle extending outward is connected to the wall of the sleeve. One end face of the blind plate and the inner wall of the sleeve form a fitting cavity for fitting onto the outside of the water meter cap. A through hole is provided on the blind plate, and a locking block that cooperates with the through hole to prevent rotation is provided in the through hole. One end of the locking block extends into the fitting cavity and forms a locking end for locking into the locking groove of the water meter cap. The end of the locking block away from the locking end is detachably connected to the blind plate by a detachable fastener.

[0009] Furthermore, the locking block includes a block body, with a locking end located at one end of the block body, and the other end of the block body protruding from the blind plate to form a fixed end. The locking block also includes a connecting plate fixed to the end face of the fixed end. The connecting plate has an overhang that extends out of the end face of the fixed end. A fixing block is sandwiched between the overhang and the blind plate. The detachable fastener includes a fixing screw that passes through the overhang and the fixing block and is threadedly connected to the blind plate.

[0010] Furthermore, there are two fixing blocks, which are located on both sides of the fixing end. The two ends of the connecting plate have cantilevered parts, and the fixing screws are installed on each cantilevered part and the fixing block.

[0011] Furthermore, the block of the card is rectangular, and the two fixing blocks are located on both sides of the width direction of the fixing end, respectively. The sleeve wall is threaded with tightening screws for tightening the two sides of the length direction of the fixing end.

[0012] Furthermore, the end of the locking block away from the locking end protrudes from the blind plate to form a fixed end, and the sleeve wall is threaded with tightening screws for respectively tightening the two opposite sides of the fixed end.

[0013] Furthermore, the connecting plate is fixedly connected to the block by fastening screws.

[0014] Furthermore, a groove for embedding a fixing block is provided on the end face of the blind plate facing away from the sleeve cavity. The groove is located at the opening of the through hole and communicates with the through hole.

[0015] Furthermore, the blind flange includes a plate body and a fixing block welded and fixed to the side of the plate body facing away from the sleeve cavity. The end of the locking block away from the locking end protrudes from the plate body to form a fixing end. The fixing end of the locking block is detachably connected to the fixing block by a detachable fastener.

[0016] Furthermore, a striking rod for striking is fixedly connected to the wall of the sleeve.

[0017] Furthermore, the angle between the tangent at the connection between the striking rod and the sleeve wall and the axis of the striking rod is in the range of 45°-75°.

[0018] The beneficial effects of adopting the above technical solution are as follows: This utility model innovatively proposes a water meter cap removal and installation tool, including a sleeve and a blind plate fixedly connected to one end of the sleeve. A handle extending outward is connected to the sleeve wall. One end face of the blind plate and the inner wall of the sleeve form a fitting cavity for fitting onto the outside of the water meter cap. A through hole is opened on the blind plate, and a locking block that cooperates with the through hole to prevent rotation is set in the through hole. One end of the locking block extends into the fitting cavity and forms a locking end for locking into the locking groove of the water meter cap. By detachably connecting the end of the locking block away from the locking end to the blind plate through a detachable fastener, the locking block can be removed and replaced separately from the blind plate, reducing the cost of use. Attached Figure Description

[0019] Figure 1 This is a top view of one embodiment of the water meter cap removal tool of this utility model;

[0020] Figure 2 This is a bottom view of one embodiment of the water meter cap removal tool of this utility model;

[0021] Figure 3 This is a side sectional view of one embodiment of the water meter cap removal tool of this utility model.

[0022] In the diagram: 1. Sleeve; 2. Blind flange; 3. Clamping block; 301. Fixed end; 302. Insertion end; 303. Sleeve cavity; 4. Tightening screw; 5. Handle; 6. Applying force rod; 7. Fixing block; 8. Connecting plate; 9. Fastening screw; 10. Fixing screw; 11. Striking rod. Detailed Implementation

[0023] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0024] This utility model proposes a water meter cap removal and installation tool. By making the locking block detachable, the locking block can be replaced individually after deformation, without having to replace the entire removal and installation tool, thus reducing the cost of use.

[0025] Based on the above concept, this utility model provides various embodiments of water meter cap removal and installation tools for illustration.

[0026] In a basic embodiment, such as Figure 1-2As shown, the water meter cap removal and installation tool includes a sleeve 11 and a blind plate 2 fixedly connected to one end of the sleeve 1. A handle 5 extending outward is connected to the wall of the sleeve 1. One end face of the blind plate 2 and the inner wall of the sleeve 1 form a fitting cavity 303 for fitting onto the outside of the water meter cap. A through hole is provided on the blind plate 2. A locking block 3 that cooperates with the through hole to prevent rotation is provided in the through hole. One end of the locking block 3 extends into the fitting cavity 303 and forms a locking end 302 for locking into the locking groove of the water meter cap. The end of the locking block 3 away from the locking end 302 is detachably connected to the blind plate 2 by a detachable fastener.

[0027] Thus, when the water meter cap removal and installation tool of this utility model deforms due to prolonged use or frequent violent use, the cap 3 can be removed from the blind plate 2 and a new cap 3 can be replaced, reducing the cost of use.

[0028] In the above embodiments, such as Figure 3 As shown, the locking block 3 includes a block body, with a locking end 302 located at one end of the block body, and the other end of the block body protruding from the blind plate 2 to form a fixed end 301. The locking block 3 also includes a connecting plate 8 fixed to the end face of the fixed end 301. The connecting plate 8 has an overhang that extends out of the end face of the fixed end 301. A fixing block 7 is sandwiched between the overhang and the blind plate 2. The detachable fastener includes a fixing screw 10 that passes through the overhang and the fixing block 7 and is threadedly connected to the blind plate 2. By setting the fixing block 7 between the connecting plate 8 and the blind plate 2, the gap between the connecting plate 8 and the blind plate 2 is prevented from being too large when they are connected, thus making the connection more reliable.

[0029] Based on the above embodiments, in one embodiment, a fixing block 7 can be provided, and a fixing screw 10 passes through the overhang of the connecting plate 8 and the fixing block 7 and is threadedly connected to the blind plate 2 to achieve a detachable connection between the locking block 3 and the blind plate 2. In a preferred embodiment, such as Figure 1 , 3 As shown, there are two fixing blocks 7, which are located on both sides of the fixing end 301. The two ends of the connecting plate 8 have cantilevered parts. Each cantilevered part and fixing block 7 is equipped with a cantilevered part that passes through the connecting plate 8 and a fixing screw 10 that is threadedly connected to the blind plate 2. This can better fix the card block 3.

[0030] In the above embodiment, the fixing block 7 is clamped between the connecting plate 8 and the blind plate 22, and the fixing screw 10 passes through the overhang of the connecting plate 8 and the fixing block 7 and is threadedly connected to the blind plate 2 to realize the detachable connection between the locking block 3 and the blind plate 2. Preferably, as Figure 3As shown, a groove for embedding the fixing block 7 is provided on the end face of the blind plate 2 facing away from the sleeve cavity 303. The groove is located at the opening of the through hole and communicates with the through hole. This arrangement allows the fixing block 7 to share the load borne by the locking block 3 and prolong the deformation time of the locking block 3.

[0031] In another embodiment, the blind flange includes a plate body and a fixing block welded to the side of the plate body facing away from the sleeve cavity. The fixing end of the fixing block protrudes from the end face of the plate body facing away from the sleeve cavity. The fixing screw is perpendicular to the axial direction of the sleeve, passes through the fixing block and is threadedly connected to the fixing block to connect the fixing end of the fixing block to the fixing block. This also enables a detachable connection between the fixing block and the blind flange.

[0032] In the above embodiments, such as Figure 1-2 As shown, the block 3 is rectangular in shape, and the two fixing blocks 7 are located on both sides of the width direction of the fixing end 301. The sleeve 1 is threaded with tightening screws 4 for tightening the two sides of the fixing end 301 in the length direction, so as to strengthen the fixing effect of the block 3.

[0033] In another embodiment, the end of the locking block 3 away from the locking end 302 protrudes from the blind plate 2 to form a fixed end 301. The connecting plate 8 and the blind plate 2 are directly connected by the fixing screw 10. The sleeve 1 is threaded with a tightening screw 4 for tightening the side of the fixed end 301. Two tightening screws 4 can be provided to tighten the two sides of the fixed end 301 in the length direction or the two sides in the width direction, respectively. Four tightening screws 4 can also be provided to tighten the four sides of the fixed end 301, respectively.

[0034] Based on the above embodiments, the connecting plate 8 and the block 3 can be fixedly connected by welding. In a preferred embodiment, such as... Figure 1 , 3 As shown, the connecting plate 8 is fixedly connected to the block by fastening screws 9. In this way, when it is necessary to replace the card block 3, the connecting plate 8 can be removed and only the cuboid card block 3 needs to be replaced. Moreover, the process of making the card block 3 separately is simple.

[0035] In the above embodiment, the inner diameter of the sleeve 1 is slightly larger than the outer diameter of the water meter cap, so as to facilitate the operation of fitting the sleeve 1 onto the water meter cap. Preferably, the inner diameter of the sleeve 1 is 1mm larger than the outer diameter of the water meter cap, which can ensure that the sleeve 1 can be securely fitted onto the water meter assembly and prevent the sleeve 1 from loosening.

[0036] Based on the above embodiments, one or three handles 5 can be provided for connecting the extended extension rod 6. When there is one handle 5, one operator performs the operation; when there are three handles 5, they can be evenly arranged in the circumferential direction, allowing three operators to operate simultaneously. In a preferred embodiment, as shown... Figure 1-2 As shown, there are two handles 5, which are located on the same diameter of the sleeve 1, so that they can be operated by two operators, and the structure is relatively simple.

[0037] Preferably, the handle 5 is a threaded rod with a diameter of 19mm and a wall thickness of 5mm, and the handle 5 is directly welded to the wall of the sleeve 1. The handle 5 is located at the middle position in the height direction of the sleeve 1.

[0038] Based on the above embodiments, the lever 6 can be made of steel pipe, which is fitted onto the handle 5 during use, and the operator uses the steel pipe for operation. In a preferred embodiment, the lever 6 has a threaded section that engages with the handle 5, and the handle 5 and the lever 6 are threaded together. This enhances the strength of the lever 6 and the handle 5 and prevents the lever 6 from loosening during use.

[0039] Based on the above embodiments, when the water meter cap is severely corroded, it can be loosened by tapping handle 5, thereby removing the water meter cap. In a preferred embodiment, such as... Figure 1-2 As shown, a striking rod 11 for striking is fixedly connected to the wall of the sleeve 1. In the case of severe corrosion of the water meter, the water meter cap can be removed by striking the striking rod 11 with a sledgehammer. This prevents the handle 5 from deforming due to excessive force when striking it, which would damage the threads of the handle 5 and ultimately prevent the handle 5 from being connected to the lever 6.

[0040] In the above embodiment, the angle between the tangent at the connection point between the striking rod 11 and the wall of the sleeve 1 and the axis of the striking rod 11 is in the range of 45°-75°. This arrangement of the striking rod 11 close to the sleeve 1 results in less vibration during striking. Specifically, it can be set to 45°, 50°, 55°, 60°, 65°, 70°, or 75°. Preferably, as... Figure 1 As shown, the angle between the tangent at the connection between the striking rod 11 and the wall of the sleeve 1 and the axis of the striking rod 11 is 60°. The striking direction is the direction in which the water meter cover is turned counterclockwise. This ensures safety when using a sledgehammer to strike. The striking rod 11 is directly and symmetrically welded to the wall of the sleeve 1, and the position of the striking rod 11 in the height direction of the sleeve 1 is consistent with the position of the snap-in end 302 of the locking block 3. This ensures that the striking force is transmitted to the water meter cap as much as possible.

[0041] In the above embodiment, the diameter of the sleeve 1 is 159 mm and the height is 80 mm. In other embodiments, the diameter and height of the sleeve 1 can be adjusted according to the size of the water meter cap to be disassembled, and the length and diameter of the handle 5 can also be adjusted according to the actual application to be compatible with other water meter caps.

[0042] Using the water meter cap removal and assembly tool of this utility model, firstly, depressurize the water meter to be disassembled, treat the water meter cap with a loosening agent, then align the fitting cavity 303 of the assembled water meter cap removal and assembly tool with the water meter cap cap, so that the sleeve 1 is fitted onto the water meter cap cap, and the locking block 3 is aligned with the locking groove of the water meter cap cap. Then, tighten the force-applying rod 6 onto the two handles 5 respectively. Finally, two operators operate the two ends of the force-applying rod 6 to rotate counterclockwise. If the water meter cap cap is too badly corroded and the force-applying rod 6 cannot be pushed, a sledgehammer is needed to strike the striking rod 11 counterclockwise. When striking, tie a long rope to one end of the force-applying rod 6 and pull it tight to prevent the water meter cap cap from shaking violently. This changes the continuous force application to an instantaneous loading force, which increases the disassembly force instantly. At this time, the water meter cap cap loosens, and the water meter cap cap can be easily removed without damaging the water meter.

[0043] The above description is merely a preferred embodiment of this application and is not intended to limit this application. The scope of patent protection of this application shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of this application shall also be included within the scope of protection of this application.

Claims

1. A tool for removing and installing a water meter cap, characterized in that, The device includes a sleeve and a blind plate fixedly connected to one end of the sleeve. A handle extending outward is connected to the wall of the sleeve. One end face of the blind plate and the inner wall of the sleeve form a sleeve cavity for fitting outside the water meter cap. A through hole is provided on the blind plate. A locking block that cooperates with the through hole to prevent rotation is provided in the through hole. One end of the locking block extends into the sleeve cavity and forms a locking end for locking into the locking groove of the water meter cap. The end of the locking block away from the locking end is detachably connected to the blind plate by a detachable fastener.

2. The water meter cap removal and installation tool according to claim 1, characterized in that, The locking block includes a block body, with a locking end located at one end of the block body and the other end of the block body protruding from the blind plate to form a fixed end. The locking block also includes a connecting plate fixed to the end face of the fixed end. The connecting plate has an overhang that extends out of the end face of the fixed end. A fixed block is sandwiched between the overhang and the blind plate. The detachable fastener includes a fixing screw that passes through the overhang and the fixed block and is threadedly connected to the blind plate.

3. The water meter cap removal and installation tool according to claim 2, characterized in that, There are two fixing blocks, which are located on both sides of the fixing end. The two ends of the connecting plate have cantilevered parts, and the fixing screws are installed on each cantilevered part and the fixing block.

4. The water meter cap removal and installation tool according to claim 3, characterized in that, The block is rectangular in shape, with two fixing blocks located on both sides of the width direction of the fixing end. The sleeve wall is threaded with tightening screws for tightening the two sides of the length direction of the fixing end respectively.

5. The water meter cap removal and installation tool according to claim 1, characterized in that, The end of the locking block away from the locking end protrudes from the blind plate to form a fixed end, and the sleeve wall is threaded with tightening screws for respectively tightening the two opposite sides of the fixed end.

6. The water meter cap removal and installation tool according to any one of claims 2-4, characterized in that, The connecting plate is fixedly connected to the block by fastening screws.

7. The water meter cap removal and installation tool according to any one of claims 2-4, characterized in that, The blind plate has a groove on the end face facing away from the cavity for embedding a fixing block. The groove is located at the opening of the through hole and communicates with the through hole.

8. The water meter cap removal and installation tool according to claim 1, characterized in that, The blind flange includes a plate body and a fixing block welded and fixed to the side of the plate body facing away from the sleeve cavity. The end of the locking block away from the locking end protrudes from the plate body to form a fixing end. The fixing end of the locking block is detachably connected to the fixing block by a detachable fastener.

9. The water meter cap removal and installation tool according to any one of claims 1-5, characterized in that, A striking rod for striking is fixedly connected to the wall of the sleeve.

10. The water meter cap removal and installation tool according to claim 9, characterized in that, The angle between the tangent at the connection between the striking rod and the casing wall and the axis of the striking rod is in the range of 45°-75°.

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