Water meter welded junction surface treatment jig

Abstract

The utility model relates to the technical field of water meter production, in particular to a surface treatment jig for a welded junction of a water meter. Comprising a water meter placement table, a bearing assembly is arranged in the middle of the upper side wall of the water meter placement table, and a water meter shell is placed on the upper side of the bearing assembly with the axis parallel to the upper side wall of the water meter placement table. According to the utility model, an operator firstly places a water meter shell on the upper side of the bearing assembly, and then inserts and fixes the L-shaped frame in the positioning sleeve, so that the metal brush head is in contact with a water meter welded junction, and electrolyte in the liquid storage cylinder flows to the water meter welded junction through the through hole, the movable cylinder and the metal brush head under the action of gravity; in the process that an operator rotates the shell of the water meter in a reciprocating mode, the metal brush head can completely smear the electrolyte on the circumferential outer wall of the welded junction of the water meter, the current can conduct comprehensive electrolytic polishing on the welded junction of the water meter, and the operator does not need to frequently use a welded junction treatment handle to dip the electrolyte and smear the electrolyte on the surface of the welded junction of the water meter.

Description

Technical Field

[0001] This utility model relates to the field of water meter manufacturing technology, and more specifically, to a surface treatment fixture for water meter weld joints. Background Technology

[0002] An electromagnetic water meter is an instrument for measuring water flow. One electromagnetic water meter includes a water meter housing 4. A water meter head is fixed to the middle position of the outer side wall of the water meter housing 4 via a connecting rod 41. Connecting pipes with flanges 42 are welded to both ends of the water meter housing 4. The welding joint between the connecting pipe and the water meter housing 4 is designated as the water meter weld joint 43.

[0003] The connecting pipe of the electromagnetic water meter and the water meter housing 4 are welded together using a welding machine. Due to the large current during welding, a lot of heat is generated. Even with the protection of welding shielding gas, blue or light yellow welding marks will appear on the surface of the water meter weld joint 43. These two colors are normal phenomena produced during welding. However, in order to achieve a better appearance for the water meter, the surface of the water meter weld joint 43 needs to be treated to the best condition. At the same time, the surface of the water meter weld joint 43 is prone to oxide layer and stains. If the oxide layer and stains on the surface of the water meter weld joint 43 are not cleaned, the oxide film formed on the surface of the water meter weld joint 43 in the subsequent anodizing process will have poor adhesion and will easily fall off, affecting the anodizing quality of the water meter weld joint 43 and shortening the service life of the water meter.

[0004] In existing technologies, electrolytic polishing is commonly used to remove the oxide layer and stains on the surface of the water meter weld joint 43. When electrolytic polishing the water meter, the operator needs to flip the water meter back and forth to adjust the position of the water meter weld joint 43 facing the operator's face so that the operator can apply the electrolyte to the water meter weld joint 43. During the flipping of the water meter, the operator also needs to frequently use the weld joint treatment handle to dip into the electrolyte and apply the electrolyte to the surface of the water meter weld joint. The operator's labor intensity is high, and the efficiency of the operator in applying electrolyte to the water meter weld joint is also low. Utility Model Content

[0005] The purpose of this utility model is to provide a surface treatment fixture for water meter weld joints to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides a surface treatment fixture for water meter weld joints, including a water meter placement platform. A support component is provided at the middle position of the side wall of the water meter placement platform. The water meter housing is placed on the upper side of the support component with its axis parallel to the side wall of the water meter placement platform. The support component restricts the water meter housing to rotate only around its own axis. A cleaning component is provided on the upper side of the water meter placement platform. The cleaning component includes a power supply fixedly installed on the side wall of the water meter placement platform by a bracket. The negative terminal of the power supply is fixedly connected to a housing terminal clamp via a wire. The housing terminal clamp is clamped and fixed to the side wall of a connecting rod. The positive terminal of the power supply is fixedly connected to a cleaning brush via a wire. When the cleaning brush contacts the water meter weld joint, the cleaning brush applies electrolyte to the water meter weld joint.

[0007] As a further improvement to this technical solution, the cleaning component also includes an inverted L-shaped frame. A positioning sleeve is fixed on the upper side wall of the water meter placement platform at a position on one side of the bearing component. The lower end of the vertical section of the L-shaped frame is inserted into the interior of the positioning sleeve and contacts the upper side wall of the water meter placement platform.

[0008] As a further improvement to this technical solution, the cleaning brush includes an upward-opening liquid storage cylinder fixed to the horizontal end of the L-shaped frame. The liquid storage cylinder is filled with electrolyte. A through groove communicating with the inside of the liquid storage cylinder is opened on the lower side wall of the liquid storage cylinder. A downward-opening movable cylinder is vertically slidably arranged inside the through groove. A metal brush head is fixed on the lower side wall of the movable cylinder. The upper end of the movable cylinder extends into the inside of the liquid storage cylinder and is coaxially fixed with a circular plate. The outer diameter of the circular plate is larger than the outer diameter of the liquid storage cylinder. A convex ring is coaxially fixed on the side wall of the movable cylinder near the bottom. A spring sleeved on the movable cylinder is fixed between the convex ring and the liquid storage cylinder. The spring pushes the convex ring away from the liquid storage cylinder.

[0009] As a further improvement to this technical solution, the cleaning brush also includes a through hole opened on the side wall of the moving cylinder near the top. When the metal brush head contacts the circumferential side wall of the water meter weld, the moving cylinder drives the through hole to move upward to the inside of the storage cylinder, and the through hole connects the inside of the storage cylinder and the inside of the moving cylinder.

[0010] As a further improvement to this technical solution, the supporting component includes a rotating chassis fixed to the side wall of the water meter placement platform. A U-shaped frame is fixed at the middle position of the upper side wall of the rotating chassis. The upper side wall of the U-shaped frame has two symmetrically opened arc surfaces. The axis of the water meter housing and the axis of the arc surfaces are on the same straight line. Several rollers are equidistantly arranged on the opposite sides of the U-shaped frame along the arc surfaces. The circumferential side wall of the rollers contacts the circumferential side wall of the water meter housing, and several rollers respectively contact the side of the two flanges that are close to each other.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This water meter weld surface treatment fixture allows the operator to first place the water meter housing on the upper side of the supporting component, and then insert and fix the L-shaped frame inside the positioning sleeve. This allows the metal brush head to contact the water meter weld. Under the action of gravity, the electrolyte inside the storage tank flows through the through hole, the moving cylinder, and the metal brush head to the water meter weld. As the operator rotates the water meter housing back and forth, the metal brush head will apply the electrolyte to the outer circumference of the water meter weld, enabling the current to perform comprehensive electrolytic polishing on the water meter weld. The operator does not need to frequently use the weld treatment handle to dip into the electrolyte and apply it to the surface of the water meter weld, reducing the operator's labor intensity and improving the efficiency of applying electrolyte to the water meter weld. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the load-bearing component and the water meter combined according to this utility model;

[0015] Figure 3 This is one of the structural schematic diagrams of the load-bearing component of this utility model;

[0016] Figure 4 This is the second structural schematic diagram of the load-bearing component of this utility model;

[0017] Figure 5 This is a schematic diagram of the cleaning component and water meter placement platform of this utility model;

[0018] Figure 6 This is a partial structural schematic diagram of the cleaning component of this utility model;

[0019] Figure 7 This is a schematic diagram of the cleaning brush of this utility model;

[0020] Figure 8 This is a cross-sectional view of the cleaning brush of this utility model.

[0021] The meanings of the labels in the diagram are as follows:

[0022] 1. Water meter placement platform;

[0023] 2. Cleaning components; 21. Power supply; 22. Housing wiring clamp; 23. Positioning sleeve; 24. L-shaped bracket; 25. Cleaning brush; 251. Liquid reservoir; 252. Moving cylinder; 253. Through hole; 254. Metal brush head; 255. Convex ring; 256. Spring;

[0024] 3. Load-bearing components; 31. Rotating chassis; 32. U-shaped frame; 33. Rollers;

[0025] 4. Water meter housing; 41. Connecting rod; 42. Flange; 43. Water meter weld joint. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1

[0028] Please see Figures 1-8 As shown, one of the objectives of this embodiment is to provide a surface treatment fixture for water meter weld joints, including a water meter placement platform 1. The water meter placement platform 1 consists of a square plate and four legs respectively fixed at the four corners of the lower side wall of the plate. A support component 3 is provided in the middle of the upper side wall of the water meter placement platform 1. The water meter housing 4 is placed on the upper side of the support component 3 with its axis parallel to the upper side wall of the water meter placement platform 1. The support component 3 restricts the position of the water meter housing 4, so that the water meter housing 4 can only rotate around its own axis. At the same time, a cleaning component 2 is provided on the upper side of the water meter placement platform 1. The cleaning component 2 includes a power supply 21 fixedly installed on the upper side wall of the water meter placement platform 1 by a bracket. The negative terminal of the power supply 21 is fixedly connected to a housing terminal clamp 22 by a wire. The housing terminal clamp 22 is clamped and fixed to the side wall of the connecting rod 41. The positive terminal of the power supply 21 is fixedly connected to a cleaning brush 25 by a wire. When the cleaning brush 25 contacts the water meter weld joint 43, the cleaning brush 25 moves upwards towards the water meter weld joint 43. When the cleaning brush 25 contacts the water meter weld joint 43 and the water meter housing 4 rotates around its own axis, the cleaning brush 25 moves relative to the water meter weld joint 43 and slides along the outer circumference of the water meter weld joint 43, thereby fully applying the electrolyte to the circumferential surface of the water meter weld joint 43. The electrolyte is a solution with good conductivity, so it will enhance the conductivity of the water meter weld joint 43. At the same time, the outer casing clamp 22, the water meter, and the cleaning brush 25 are all made of conductive materials. Therefore, turning on the power supply 21 will form a current path between the power supply 21, the outer casing clamp 22, the water meter, and the cleaning brush 25. During the process of the current passing through the water meter weld joint 43, the water meter weld joint 43 is electrolytically polished. That is, the current removes the oxide layer and stains on the surface of the water meter weld joint 43 through electrolysis, making the surface of the water meter weld joint 43 smooth and showing the original color of stainless steel. This improves the adhesion of the oxide film formed on the surface of the water meter weld joint 43 in subsequent electroplating or anodizing processes.

[0029] The structure of the load-bearing component 3 is detailed below, referring to... Figures 2-4The supporting component 3 includes a rotating base 31 fixed to the upper side wall of the water meter placement platform 1. The rotating base 31 is a double-layer structure composed of an upper plate and a lower plate. A bearing is installed between the upper and lower layers, allowing the upper plate to rotate relative to the lower plate. Several circular drainage holes are provided on the plates to prevent electrolyte from accumulating on the upper side of the water meter placement platform 1. Several positioning posts are vertically fixed to the lower side wall of the lower plate, and these positioning posts are inserted into the drainage holes to restrict the lateral movement of the rotating base 31. A U-shaped frame 32 is fixed in the middle of the upper side wall of the rotating base 31, i.e., the U-shaped frame 32 is fixed to the upper side wall of the upper plate. A through-slit is provided at the bottom of the U-shaped frame 32. During the process of applying electrolyte to the water meter weld joint 43 by the cleaning brush 25, the electrolyte will fall onto the U-shaped frame under gravity. Inside the bottom side of the U-shaped frame 32, the electrolyte inside the U-shaped frame 32 can quickly flow into the leak hole through the gap, thus preventing the electrolyte from accumulating inside the U-shaped frame 32. At the same time, two arc surfaces are symmetrically opened on the upper side wall of the U-shaped frame 32. The axis of the water meter housing 4 and the axis of the arc surface are on the same straight line. Several rollers 33 are equidistantly arranged on the opposite sides of the U-shaped frame 32 along the arc surface. The circumferential side wall of the rollers 33 contacts the circumferential side wall of the water meter housing 4, thus restricting the water meter housing 4 to rotate only around its own axis. Several rollers 33 contact the side of the two flanges 42 that are close to each other. The rollers 33 and the flanges 42 cooperate to prevent the water meter housing 4 from moving along its own axis, so that the two water meter weld joints 43 are always located in the predetermined position inside the U-shaped frame 32, which makes it convenient for the operator to apply electrolyte to the surface of the water meter weld joints 43 by cleaning brush 25.

[0030] Reference Figure 5 and Figure 6 The cleaning component 2 also includes an inverted L-shaped frame 24. A cleaning brush 25 is fixed to the end of the horizontal section of the L-shaped frame 24. A positioning sleeve 23 is fixed on the upper side wall of the water meter placement platform 1, located on one side of the bearing component 3. The lower end of the vertical section of the L-shaped frame 24 is inserted into the inside of the positioning sleeve 23 and contacts the upper side wall of the water meter placement platform 1. The L-shaped frame 24 and the positioning sleeve 23 are connected by a snap-fit, thereby fixing the L-shaped frame 24 in an inverted position on the upper side of the water meter placement platform 1. After the operator fixes the L-shaped frame 24 on the upper side of the water meter placement platform 1 through the positioning sleeve 23, the cleaning brush 25 contacts the circumferential surface of the water meter weld joint 43, and the cleaning brush 25 can apply electrolyte to the water meter weld joint 43.

[0031] The following details the structure of cleaning brush 25, please refer to... Figure 7 and Figure 8The cleaning brush 25 includes an upward-opening liquid storage cylinder 251 fixed to the horizontal end of the L-shaped frame 24. The liquid storage cylinder 251 is filled with electrolyte. An end cap is threaded to the upper end of the liquid storage cylinder 251, covering the opening of the liquid storage cylinder 251 to prevent electrolyte leakage. Simultaneously, there is no seal between the end cap and the liquid storage cylinder 251, ensuring air circulation between the liquid storage cylinder 251 and the outside environment. This facilitates the outflow of electrolyte from the liquid storage cylinder 251. The lower side wall of the cylinder 251 is provided with a through groove that communicates with the interior of the liquid storage cylinder 251. A vertically sliding movable cylinder 252 with its opening facing downward is disposed inside the through groove. The upper end of the movable cylinder 252 extends into the interior of the liquid storage cylinder 251 and is coaxially fixed with a circular plate. The outer diameter of the circular plate is larger than the outer diameter of the liquid storage cylinder 251. When the circular plate contacts the bottom side of the interior of the liquid storage cylinder 251, the circular plate restricts the movable cylinder 252 from moving downward. At this time, the movable cylinder 252 is at its lowest point, that is, the movable cylinder 252 is at its initial position.

[0032] A metal brush head 254 is fixed to the lower side wall of the moving cylinder 252. The other end of the wire on the positive terminal of the power supply 21 is fixed to the metal brush head 254. The position of the metal brush head 254 corresponds to the position of the opening of the moving cylinder 252. The metal brush head 254 is made of folded and extruded metal mesh. The metal brush head 254 has fine mesh holes. The electrolyte flowing out of the opening of the moving cylinder 252 can flow in the mesh holes of the metal brush head 254. A convex ring 255 is coaxially fixed to the side wall of the moving cylinder 252 near the bottom. A spring 256 is fixed between the convex ring 255 and the liquid storage cylinder 251 and is sleeved on the moving cylinder 252. The spring 256 pushes the convex ring 255 away from the liquid storage cylinder 251. The cleaning brush 25 also includes a through hole 253 opened on the side wall of the moving cylinder 252 near the top. When the moving cylinder 252 is in the initial position, the through hole 253 is located inside the through groove, and the inner wall of the through groove is blocked. The electrolyte inside the storage cylinder 251 does not flow out through the moving cylinder 252 through the through hole 253. When the operator fixes the L-shaped frame 24 on the upper side of the water meter placement platform 1 through the positioning sleeve 23, the metal brush head 254 contacts the circumferential side wall of the water meter weld 43. The moving cylinder 252 drives the through hole 253 to move upward to the inside of the storage cylinder 251. The through hole 253 connects the inside of the storage cylinder 251 and the inside of the moving cylinder 252. The electrolyte inside the storage cylinder 251 flows into the inside of the moving cylinder 252 through the through hole 253. Then the electrolyte contacts the metal brush head 254 through the opening of the moving cylinder 252. The electrolyte continuously wets the outer surface of the metal brush head 254 through the porous structure of the metal brush head 254. Then, under the action of gravity, the electrolyte is transferred from the outer surface of the metal brush head 254 to the water meter weld 43, so that the cleaning brush 25 can apply electrolyte to the water meter weld 43.

[0033] When using this fixture, the operator first rotates the bearing assembly 3 to its initial state. When the bearing assembly 3 is in its initial state, the axis of the arc surface on the U-shaped groove is perpendicular to the plane on the side of the power supply 21 where the wire is installed. The operator then places the water meter housing 4 on top of the bearing assembly 3, with the connecting rod 41 facing upwards. The operator then clamps and fixes the housing wire clamp 22 onto the connecting rod 41. Afterwards, the operator inserts and fixes the L-shaped bracket 24 inside the positioning sleeve 23, so that the metal brush head 254 is welded to the water meter joint. 43. After contact, rotate the upper plate of the rotating chassis 31 to adjust the position of the water meter housing 4. Rotate the water meter housing 4 by 90 degrees so that the axis of the water meter housing 4 and the axis of the liquid storage cylinder 251 are on the same plane. Then, the metal brush head 254 contacts the circumferential surface of one of the water meter weld joints 43. The operator can then turn on the power supply 21 to electrolytically polish the water meter weld joint 43. The gap between the water meter housing 4 and the bottom side of the U-shaped frame 32 allows the connecting rod 41 and the water meter head to rotate and pass through. During the polishing process, the operator rotates the water meter housing 4 approximately half a turn around its own axis, and then rotates it approximately one full turn in the opposite direction. This allows the metal brush head 254 to fully contact the outer circumference of the water meter weld joint 43, ensuring that the metal brush head 254 effectively applies the electrolyte to the outer circumference of the weld joint 43. Simultaneously, this prevents the wires between the outer casing clamp 22 and the power supply 21 from being broken due to multiple turns around the water meter housing 4. This allows the current to thoroughly electropolish the water meter weld joint 43 near the positioning sleeve 23. The operator repeatedly rotates the water meter housing 4, causing the metal brush head 254 to rub back and forth against the surface of the water meter weld joint 43 until the circumferential surface of the weld joint 43 returns to a smooth, stainless steel finish. This completes the electropolishing of the water meter weld joint 43. By rotating the upper plate 180 degrees, the operator can keep the other water meter weld joint 43 in contact with the metal brush head 254. Repeating the above steps allows for the electropolishing of the other water meter weld joint 43.

[0034] After the operator completes the electrolytic polishing of the two water meter weld joints 43, the operator rotates the bearing assembly 3 to its initial state, which allows the water meter housing 4 to be moved away from the underside of the metal brush head 254. After the metal brush head 254 is no longer in contact with the water meter weld joint 43, the spring 256 will rebound. The rebounding spring 256 pushes the convex ring 255 and the moving cylinder 252 away from the liquid storage cylinder 251, causing the through hole 253 on the moving cylinder 252 to move out from the inside of the liquid storage cylinder 251 into the inside of the through groove. That is, the moving cylinder 252 returns to its initial state, and the through groove blocks the through hole 253, thereby preventing the electrolyte inside the liquid storage cylinder 251 from continuing to flow out through the through hole 253. The operator removes the water meter housing 4 from the bearing assembly 3, and then replaces the next water meter housing 4. The above steps are repeated to electrolytic polish the water meter weld joint 43 on the next water meter housing 4.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A surface treatment fixture for water meter weld joints, comprising a water meter placement platform (1), characterized in that: A support component (3) is provided in the middle of the upper side wall of the water meter placement platform (1). The water meter housing (4) is placed on the upper side of the support component (3) with its axis parallel to the upper side wall of the water meter placement platform (1). The support component (3) restricts the water meter housing (4) to rotate only around its own axis. A cleaning component (2) is provided on the upper side of the water meter placement platform (1). The cleaning component (2) includes a power supply (21) fixedly installed on the upper side wall of the water meter placement platform (1) by a bracket. The negative terminal of the power supply (21) is fixedly connected to a housing terminal clamp (22) by a wire. The housing terminal clamp (22) is clamped and fixed on the side wall of the connecting rod (41). The positive terminal of the power supply (21) is fixedly connected to a cleaning brush (25) by a wire. When the cleaning brush (25) contacts the water meter weld (43), the cleaning brush (25) applies electrolyte to the water meter weld (43).

2. The surface treatment fixture for water meter weld joints according to claim 1, characterized in that: The cleaning component (2) also includes an inverted L-shaped frame (24). A positioning sleeve (23) is fixed on the upper side wall of the water meter placement platform (1) at a position on one side of the bearing component (3). The lower end of the vertical section of the L-shaped frame (24) is inserted into the interior of the positioning sleeve (23) and contacts the upper side wall of the water meter placement platform (1).

3. The surface treatment fixture for water meter weld joints according to claim 2, characterized in that: The cleaning brush (25) includes an upward-opening liquid storage cylinder (251) fixed to the horizontal end of the L-shaped frame (24). The liquid storage cylinder (251) is filled with electrolyte. A through groove communicating with the interior of the liquid storage cylinder (251) is provided on the lower side wall of the liquid storage cylinder (251). A downward-opening movable cylinder (252) is vertically slidably arranged inside the through groove. A metal brush head (254) is fixed to the lower side wall of the movable cylinder (252). The upper end of the movable cylinder (252) extends into the interior of the liquid storage cylinder (251) and is coaxially fixed with a circular plate. The outer diameter of the circular plate is larger than the outer diameter of the liquid storage cylinder (251). A convex ring (255) is coaxially fixed on the side wall of the movable cylinder (252) near the bottom. A spring (256) is fixed between the convex ring (255) and the liquid storage cylinder (251) and is sleeved on the movable cylinder (252). The spring (256) pushes the convex ring (255) away from the liquid storage cylinder (251).

4. The surface treatment fixture for water meter weld joints according to claim 3, characterized in that: The cleaning brush (25) also includes a through hole (253) on the side wall of the movable cylinder (252) near the top. When the metal brush head (254) contacts the circumferential side wall of the water meter weld (43), the movable cylinder (252) drives the through hole (253) to move upward to the inside of the liquid storage cylinder (251). The through hole (253) connects the inside of the liquid storage cylinder (251) and the inside of the movable cylinder (252).

5. The surface treatment fixture for water meter weld joints according to claim 1, characterized in that: The supporting component (3) includes a rotating base (31) fixed to the upper side wall of the water meter placement platform (1). A U-shaped frame (32) is fixed at the middle position of the upper side wall of the rotating base (31). The upper side wall of the U-shaped frame (32) has two symmetrical arc surfaces. The axis of the water meter housing (4) and the axis of the arc surfaces are on the same straight line. Several rollers (33) are equidistantly arranged on the opposite sides of the U-shaped frame (32) along the arc surfaces. The circumferential side wall of the rollers (33) contacts the circumferential side wall of the water meter housing (4). Several rollers (33) respectively contact the side of the two flanges (42) that are close to each other.

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