Pressure tapping equipment for water supply system

Abstract

The utility model provides a pressure tapping device for a water supply system, which belongs to the technical field of pressure tapping of water supply systems and comprises a base, a tapping mechanism, a fixing mechanism, a sealing element and an operating handle. A mounting cavity is formed in the base, a trepanning mechanism is arranged in the mounting cavity, and the trepanning mechanism comprises a drill bit and a drill bit driving shaft; one end of the drill bit driving shaft is fixedly connected with the drill bit, and the other end of the drill bit driving shaft extends out of the mounting cavity and is fixedly connected with the operating handle; the fixing mechanism comprises an upper clamping plate and a lower clamping plate, and the upper clamping plate and the lower clamping plate are arranged on the two sides of the base respectively and connected through a fastening bolt. An annular groove is formed in the upper surface of the lower clamping plate, and a sealing piece is arranged in the annular groove. The problems that when existing tapping equipment conducts tapping under pressure, the sealing performance is poor, operation is complex, fixing is not firm, and the tapping efficiency is low can be solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of pressurized tapping in water supply systems, and specifically relates to a pressurized tapping device for water supply systems. Background Technology

[0002] In the maintenance and expansion of modern urban water supply systems, it is often necessary to drill holes in water supply pipes without interrupting water supply to connect new branch pipes or install valves and other accessories. Traditional drilling methods usually require stopping the water supply before drilling, which not only disrupts users' normal water use but also increases workload and time costs. Although pressurized drilling equipment exists on the market, these devices generally suffer from complex structures, inconvenient operation, and poor sealing performance. Especially when drilling high-pressure water pipes, traditional equipment is prone to leakage, even causing safety accidents. Furthermore, existing pressurized drilling equipment is often not securely fixed, easily shifting during operation, affecting the accuracy and quality of drilling. Low drilling efficiency is also a common problem, with long drilling times and low work efficiency, making it difficult to meet the requirements of rapid construction. Therefore, developing a pressurized drilling device for water supply systems that is simple in structure, easy to operate, has good sealing performance, is securely fixed, and has high drilling efficiency is of great significance for improving the efficiency and quality of water supply system maintenance and expansion. Utility Model Content

[0003] In view of this, the present invention provides a pressurized tapping device for a water supply system, which can solve the problems of poor sealing, complicated operation, unstable fixing and low tapping efficiency of existing tapping devices when performing pressurized tapping.

[0004] This utility model is implemented as follows:

[0005] This utility model provides a pressurized tapping device for a water supply system, comprising: a base, a tapping mechanism, a fixing mechanism, a sealing element, and an operating handle; the base has an installation cavity, and the tapping mechanism is installed in the installation cavity, the tapping mechanism including a drill bit and a drill bit drive shaft; one end of the drill bit drive shaft is fixedly connected to the drill bit, and the other end of the drill bit drive shaft extends out of the installation cavity and is fixedly connected to the operating handle; the fixing mechanism includes an upper clamping plate and a lower clamping plate, which are respectively installed on both sides of the base and connected by fastening bolts; the upper surface of the lower clamping plate has an annular groove, and a sealing element is installed in the annular groove; the drill bit drive shaft passes through a through hole in the upper clamping plate, and a bearing is installed between the drill bit drive shaft and the upper clamping plate; one end of the operating handle is fixedly connected to the drill bit drive shaft, and the other end of the operating handle has a gripping part; a clamping space for clamping pipes is formed between the upper and lower clamping plates.

[0006] The technical advantages of the pressurized tapping device for a water supply system provided by this utility model are as follows: Through the combined design of the base, tapping mechanism, fixing mechanism, sealing element and operating handle, the function of pressurized tapping of the water supply system is realized. The drill bit and drill bit drive shaft constitute the tapping mechanism. The drill bit is driven to rotate by the operating handle to tap the hole. The upper and lower clamping plates constitute the fixing mechanism to firmly clamp the pipe. The sealing element ensures that there is no water leakage during the tapping process. The overall structure is compact and easy to operate. It is suitable for pressurized tapping operations of various water supply systems. Pipe tapping can be completed without stopping the water supply, which greatly improves work efficiency.

[0007] Based on the above technical solution, the pressurized tapping device for a water supply system of this utility model can be further improved as follows:

[0008] The drill bit has a hollow structure and a spiral cutting edge on its outer wall. The drill drive shaft has a hollow structure and its inner cavity is connected to the inner cavity of the drill bit. A limiting ring is provided on the outer wall of the drill drive shaft, and the limiting ring abuts against the upper surface of the upper clamping plate. The upper end of the drill drive shaft has anti-slip texture, and the connection between the anti-slip texture and the operating handle forms an anti-slip fixing structure.

[0009] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the hollow structure of the drill bit and drill drive shaft design allows the chips generated after drilling to be discharged through the inner cavity, avoiding the problem of chip blockage; the spiral cutting edge enhances the cutting ability of the drill bit; the setting of the limit ring prevents the drill drive shaft from sliding too deep and damaging the inner wall of the pipe; the anti-slip texture increases the firmness of the connection between the operating handle and the drill drive shaft, improving the safety and stability of operation.

[0010] Furthermore, the upper clamping plate includes an upper clamping plate body and an upper clamping plate extension; the upper clamping plate body has a through hole in the middle, and a bearing is installed in the through hole, with the inner ring of the bearing fixedly connected to the outer wall of the drill bit drive shaft; the upper clamping plate extension extends outward from both sides of the upper clamping plate body, and the upper clamping plate extension has multiple bolt holes; the lower clamping plate includes a lower clamping plate body and a lower clamping plate extension, the lower clamping plate extension is correspondingly arranged to the upper clamping plate extension, and the lower clamping plate extension has threaded holes corresponding to the bolt holes.

[0011] The beneficial effects of adopting the above-mentioned improved scheme are as follows: the structural design of the upper and lower clamping plates, through the combination of the upper clamping plate body and the upper clamping plate extension, and the corresponding arrangement of the lower clamping plate body and the lower clamping plate extension, makes the clamping and fixing more secure; the setting of bearings reduces the friction force when the drill bit drive shaft rotates, and improves the drilling efficiency; the setting of multiple bolt holes and threaded holes ensures the stability and reliability of the connection between the upper and lower clamping plates, and adapts to the clamping requirements of pipes of different diameters.

[0012] Furthermore, the depth of the annular groove is 3 to 5 mm, and the width of the annular groove is 5 to 8 mm; the sealing element is a rubber O-ring with a cross-sectional diameter of 4 to 6 mm; the inner diameter of the annular groove is smaller than the inner diameter of the circular groove on the lower clamping plate body used to clamp the pipe, and the radial gap between the two is 2 to 4 mm.

[0013] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the size design of the annular groove and its matching with the O-ring seal ensure the reliability of the sealing effect; the radial gap design between the annular groove and the circular groove ensures that the seal can play its full role and prevent water leakage during pressurized opening; the precise size setting enables the seal to maintain good elastic deformation under pressure, improving the durability and stability of the sealing effect.

[0014] Furthermore, the base has four support feet at its bottom, located at the four corners of the base. The support feet are made of rubber and have a raised hemispherical structure at their bottom to increase friction with the ground. The base also has a handle on its side, which is integrally formed with the base.

[0015] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the four support feet designed at the bottom of the base increase the stability of the equipment; the rubber support feet and hemispherical structure design increase the friction with the ground and prevent the equipment from sliding during use; the one-piece molded handle design facilitates the handling and movement of the equipment, improves the practicality and portability of the equipment, and adapts to the needs of various working environments.

[0016] Furthermore, the operating handle includes a connecting rod and a gripping part; one end of the connecting rod is fixedly connected to the drill bit drive shaft, and the other end of the connecting rod is fixedly connected to the gripping part; the gripping part has a transverse T-shaped structure, and the surface of the gripping part is provided with anti-slip texture; a reinforcing rib is provided between the connecting rod and the gripping part, the reinforcing rib has an arc-shaped structure, and both ends of the reinforcing rib are fixedly connected to the connecting rod and the gripping part respectively.

[0017] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the structural design of the operating handle, including the combination of the connecting rod and the grip, provides a comfortable operating experience; the design of the horizontal T-shaped grip and the anti-slip texture increases the stability and comfort of operation; the setting of the arc-shaped reinforcing rib enhances the strength of the connection between the connecting rod and the grip, prevents deformation or breakage during heavy operation, and improves the durability and safety of the equipment.

[0018] Furthermore, the outer wall of the drill bit is provided with multiple protrusions, which are evenly distributed along the circumference of the drill bit; the protrusions are conical in shape, with their tips pointing towards the cutting direction of the drill bit; the height of the protrusions is 2-4 mm.

[0019] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the multiple conical protrusions evenly distributed on the outer wall of the drill bit enhance the cutting ability of the drill bit, making the hole-opening process smoother; the conical structure design of the protrusions allows the cutting force to be better dispersed during the cutting process, reducing resistance; the height design of the protrusions is reasonable, which can enhance the cutting effect without affecting the overall stability of the drill bit, thus improving the hole-opening efficiency and quality.

[0020] Furthermore, the drill bit has a V-shaped cutting edge at its front end, with an opening angle of 30-60°; the edge of the V-shaped cutting edge is provided with a carbide insert, which is fixedly connected to the drill bit by brazing.

[0021] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the V-shaped cutting edge design at the front end of the drill bit enhances the initial cutting ability of the drill bit, making it easier to start drilling; the reasonable opening angle design makes the cutting process smoother; the application of carbide inserts greatly improves the hardness and wear resistance of the cutting edge, extends the service life of the drill bit, and enables the equipment to adapt to the drilling needs of pipes of different materials.

[0022] Furthermore, the inner wall of the drill bit drive shaft is provided with a spiral groove, the pitch of which is 45-25mm; the depth of which is 2-4mm and the width of which is 3-6mm.

[0023] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the spiral groove design on the inner wall of the drill bit drive shaft forms a spiral channel, which is conducive to the discharge of chips and water; the reasonable pitch, depth and width design makes the flow effect of the spiral channel better; the spiral groove can also enhance the flexibility of the drill bit drive shaft, reduce the weight of the drill bit drive shaft while ensuring strength, and improve the flexibility and convenience of operation.

[0024] Furthermore, the number of protrusions is 4-8, and the multiple protrusions are equidistantly distributed on the outer wall of the drill bit; the bottom of the protrusions has an arc-shaped transition with a radius of 1-2 mm.

[0025] The beneficial effects of adopting the above-mentioned improvement scheme are as follows: the design of the number and distribution of protrusions on the outer wall of the drill bit makes the cutting force evenly distributed and reduces the vibration of the drill bit; the arc-shaped transition design at the bottom of the protrusion enhances the strength of the protrusion and prevents it from breaking during the cutting process; the reasonable distribution and shape design of the protrusions makes the drill bit more stable during rotation, improves the accuracy and quality of hole opening, and extends the service life of the drill bit.

[0026] Compared with existing technologies, the beneficial effects of the pressurized tapping device for water supply systems provided by this utility model are as follows: The pressurized tapping device for water supply systems provided by this utility model, through a rationally designed structural combination including a base, tapping mechanism, fixing mechanism, sealing element, and operating handle, achieves safe and effective pressurized tapping of water supply pipelines. Specifically, the hollow structure of the drill bit and the drill bit drive shaft design allows for timely discharge of cuttings generated during tapping; the spiral cutting edge and protrusion design enhance the cutting ability of the drill bit; the fixing mechanism composed of upper and lower clamping plates, through precisely designed annular grooves and sealing elements, ensures no water leakage during pressurized tapping; and the ergonomic design of the operating handle provides a comfortable operating experience. The overall structure is compact and easy to operate, suitable for water supply pipelines of various diameters, and can complete pipe tapping without interrupting water supply, greatly improving work efficiency, reducing the impact on users' water supply services, and solving the problems of poor sealing, complex operation, unstable fixing, and low tapping efficiency existing in existing technologies, thus possessing significant practical value. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of a pressurized tapping device for a water supply system;

[0029] Figure 2 This is a cross-sectional schematic diagram of the fixing mechanism;

[0030] The attached diagram lists the components represented by each number as follows:

[0031] 10. Base; 20. Hole-opening mechanism; 21. Drill bit; 22. Drill bit drive shaft; 30. Fixing mechanism; 31. Upper clamping plate; 32. Lower clamping plate; 40. Seal; 50. Operating handle. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0033] like Figure 1-2The illustration shows an embodiment of a pressurized tapping device for a water supply system provided by this utility model. In this embodiment, it includes: a base 10, a tapping mechanism 20, a fixing mechanism 30, a sealing element 40, and an operating handle 50. The base has an installation cavity, within which the tapping mechanism is installed. The tapping mechanism includes a drill bit 21 and a drill bit drive shaft 22. One end of the drill bit drive shaft is fixedly connected to the drill bit, and the other end extends out of the installation cavity and is fixedly connected to the operating handle. The fixing mechanism includes an upper clamping plate 31 and a lower clamping plate 32, which are respectively located on both sides of the base and connected by fastening bolts. The upper surface of the lower clamping plate has an annular groove, within which a sealing element is installed. The drill bit drive shaft passes through a through hole in the upper clamping plate, and a bearing is installed between the drill bit drive shaft and the upper clamping plate. One end of the operating handle is fixedly connected to the drill bit drive shaft, and the other end of the operating handle has a gripping part. A clamping space for clamping pipes is formed between the upper and lower clamping plates.

[0034] In the above technical solution, the drill bit has a hollow structure and a spiral cutting edge on its outer wall; the drill bit drive shaft has a hollow structure and its inner cavity is connected to the inner cavity of the drill bit; a limiting ring is provided on the outer wall of the drill bit drive shaft, and the limiting ring abuts against the upper surface of the upper clamping plate; the upper end of the drill bit drive shaft is provided with anti-slip texture, and the connection between the anti-slip texture and the operating handle forms an anti-slip fixing structure.

[0035] Furthermore, in the above technical solution, the upper clamping plate includes an upper clamping plate body and an upper clamping plate extension; the upper clamping plate body has a through hole in the middle, and a bearing is installed in the through hole, with the inner ring of the bearing fixedly connected to the outer wall of the drill bit drive shaft; the upper clamping plate extension extends outward from both sides of the upper clamping plate body, and the upper clamping plate extension has multiple bolt holes; the lower clamping plate includes a lower clamping plate body and a lower clamping plate extension, the lower clamping plate extension is correspondingly arranged to the upper clamping plate extension, and the lower clamping plate extension has threaded holes corresponding to the bolt holes.

[0036] Furthermore, in the above technical solution, the depth of the annular groove is 3 to 5 mm, and the width of the annular groove is 5 to 8 mm; the sealing element is a rubber O-ring, and the cross-sectional diameter of the O-ring is 4 to 6 mm; the inner diameter of the annular groove is smaller than the inner diameter of the circular groove on the lower clamping plate body used to clamp the pipe, and the radial gap between the two is 2 to 4 mm.

[0037] Furthermore, in the above technical solution, the base has four support feet at its bottom, located at the four corners of the base. The support feet are made of rubber and have a raised hemispherical structure at their bottom to increase friction with the ground. The base has a handle on its side, which is integrally formed with the base.

[0038] Furthermore, in the above technical solution, the operating handle includes a connecting rod and a gripping part; one end of the connecting rod is fixedly connected to the drill bit drive shaft, and the other end of the connecting rod is fixedly connected to the gripping part; the gripping part has a transverse T-shaped structure, and the surface of the gripping part is provided with anti-slip texture; a reinforcing rib is provided between the connecting rod and the gripping part, the reinforcing rib has an arc-shaped structure, and both ends of the reinforcing rib are fixedly connected to the connecting rod and the gripping part respectively.

[0039] Furthermore, in the above technical solution, the outer wall of the drill bit is provided with multiple protrusions, which are evenly distributed along the circumference of the drill bit; the protrusions are conical in shape, with the tips of the protrusions facing the cutting direction of the drill bit; the height of the protrusions is 2-4mm.

[0040] Furthermore, in the above technical solution, the front end of the drill bit is provided with a V-shaped cutting edge, the opening angle of the V-shaped cutting edge is 30-60°; the edge of the V-shaped cutting edge is provided with a carbide insert, which is fixedly connected to the drill bit by a brazing process.

[0041] Furthermore, in the above technical solution, the inner wall of the drill bit drive shaft is provided with a spiral groove, the pitch of the spiral groove is 45-25mm, the depth of the spiral groove is 2-4mm, and the width of the spiral groove is 3-6mm.

[0042] Furthermore, in the above technical solution, the number of protrusions is 4-8, and the multiple protrusions are equidistantly distributed on the outer wall of the drill bit; the bottom of the protrusions is an arc-shaped transition with a radius of 1-2 mm.

[0043] Specifically, the principle of this utility model is as follows: First, place the equipment base on a stable surface, ensuring that the four support feet are firmly supported; then, place the pipe to be drilled into the circular groove of the lower clamping plate, ensuring that the pipe surface is in full contact with the seal in the annular groove; next, place the upper clamping plate above the pipe, and connect and secure the upper and lower clamping plates with fastening bolts to ensure that the pipe is firmly clamped; check if the drill bit is in the position where the hole needs to be drilled, and adjust the position of the fixing mechanism to align the drill bit with the drilling point; then, grasp the grip of the operating handle and rotate the operating handle clockwise to drive the drill bit to rotate and drill; during the drilling process, the drill bit cuts the pipe with a spiral cutting edge and protrusions, and the generated chips are discharged through the hollow structure of the drill bit and drill bit drive shaft; when the drill bit has completely penetrated the pipe, water will flow out through the hollow structure of the drill bit and drill bit drive shaft, at which point rotation should be stopped immediately, keeping the drill bit in the drilling position to prevent water from eroding the cut; finally, install valves or other accessories as needed to complete the pressurized drilling operation. The entire process does not require water interruption, is simple and convenient to operate, highly efficient, and safe and reliable.

Claims

1. A pressurized tapping device for a water supply system, characterized in that, The utility model provides a pipe drilling device, including: Base, opening mechanism, fixed mechanism, sealing element and operating handle, the base is equipped with installation cavity, is provided with opening mechanism in installation cavity, and opening mechanism includes drill bit and drill bit drive shaft, one end of drill bit drive shaft is fixedly connected with drill bit, and the other end of drill bit drive shaft extends installation cavity and is fixedly connected with operating handle, fixed mechanism includes upper clamping plate and lower clamping plate, and upper clamping plate and lower clamping plate are arranged respectively at both sides of base, and upper clamping plate and lower clamping plate are connected through fastening bolt, the upper surface of lower clamping plate is equipped with annular groove, and sealing element is arranged in annular groove, drill bit drive shaft passes through the through -hole on upper clamping plate, and bearing is arranged between drill bit drive shaft and upper clamping plate, one end of operating handle is fixedly connected with drill bit drive shaft, and the other end of operating handle is equipped with holding part, and the clamping space for clamping pipeline is formed between upper clamping plate and lower clamping plate.

2. A water supply system pressure tapping apparatus according to claim 1, wherein The drill bit is hollow structure, and the outer wall of the drill bit is provided with helical cutting edge; The drill bit drive shaft is hollow structure, and the inner cavity of the drill bit drive shaft is communicated with the inner cavity of the drill bit; The outer wall of the drill bit drive shaft is provided with a limit ring, and the limit ring is in abutment with the upper surface of the upper clamping plate; The upper end of the drill bit drive shaft is provided with an anti-skid pattern, and the anti-skid pattern forms an anti-skid fixed structure with the connection of the operating handle.

3. A water supply system pressure tapping apparatus according to claim 2, wherein The upper clamping plate includes an upper clamping plate body and an upper clamping plate extension, the upper clamping plate extension extends outward from both sides of the upper clamping plate body, and a plurality of bolt holes are provided on the upper clamping plate extension; The lower clamping plate includes a lower clamping plate body and a lower clamping plate extension, the lower clamping plate extension is correspondingly arranged with the upper clamping plate extension, and a threaded hole corresponding to the bolt hole is provided on the lower clamping plate extension.

4. A water supply system pressure tapping apparatus according to claim 3, wherein The depth of the annular groove is 3-5mm, and the width of the annular groove is 5-8mm; The sealing element is a rubber O-ring, and the cross-sectional diameter of the O-ring is 4-6mm; The inner diameter of the annular groove is smaller than the inner diameter of the circular groove on the lower clamping plate body for clamping the pipeline, and the radial gap therebetween is 2-4mm.

5. A water supply system pressure tapping apparatus according to claim 4, wherein The bottom of the base is provided with support feet, the support feet are four, and the four support feet are respectively located at the four corners of the bottom of the base; The support feet are made of rubber material, the bottom of the support feet is a convex hemispherical structure for increasing the friction with the ground; The side surface of the base is provided with a handle, and the handle is integrally formed with the base.

6. A water supply system pressure tapping apparatus according to claim 5, wherein The operating handle includes a connecting rod and a holding part; One end of the connecting rod is fixedly connected with the drill bit drive shaft, and the other end of the connecting rod is fixedly connected with the holding part; The holding part is a transverse T-shaped structure, and the surface of the holding part is provided with an anti-skid pattern; A reinforcing rib is arranged between the connecting rod and the holding part, the reinforcing rib is in an arc-shaped structure, and both ends of the reinforcing rib are fixedly connected with the connecting rod and the holding part respectively.

7. A water supply system pressure tapping apparatus according to claim 6, wherein A plurality of protrusions are provided on the outer wall of the drill bit, and the plurality of protrusions are uniformly distributed along the circumferential direction of the drill bit; The protrusions are in a conical structure, and the tips of the protrusions are directed towards the cutting direction of the drill bit; The height of the protrusions is 2-4mm.

8. A water supply system pressure tapping apparatus according to claim 7, wherein The front end of the drill bit is provided with a V-shaped cutting edge, and the opening angle of the V-shaped cutting edge is 30-60°; The edge of the V-shaped cutting edge is provided with a hard alloy blade, and the hard alloy blade is fixedly connected with the drill bit through a brazing process.

9. A water supply system pressure tapping apparatus according to claim 8, wherein The inner wall of the drill bit driving shaft is provided with a spiral groove, the pitch of the spiral groove is 45-25 mm; the depth of the spiral groove is 2-4 mm, and the width of the spiral groove is 3-6 mm.

10. A water supply system pressure tapping apparatus according to claim 9, wherein The number of the protrusions is 4-8, and the plurality of protrusions are equidistantly distributed on the outer wall of the drill bit; the bottom of the protrusion is a circular arc transition, and the radius of the circular arc is 1-2 mm.

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