A tool for facilitating the removal and replacement of a lance adapter

Abstract

The utility model provides a tool for conveniently disassembling and replacing spray gun connecting pipe relates to spray gun installation maintenance technical field, including the link, the inner hexagonal screw and the clamping block, the link lower extreme is fixed with the clamping block through the inner hexagonal screw, and the inclined through -hole is set up in the link middle part, the through -hole inside is installed with the steel ball, and the through -hole outside is equipped with the retaining ring, the clamping block below is provided with the through -hole of installing the steel ball, and the through -hole outside in the clamping block lower extreme is installed with the set screw, and sets up the spring between the set screw and the steel ball, the clamping block is clamped on the spray gun nut installed on the spray gun mounting pipe, and the spray gun connecting pipe of spray gun nut upper end is inserted in the link inside, the utility model discloses two separate anti -drop mechanisms in structure design, is used for locking spray gun nut and spray gun connecting pipe respectively. When operating, the user can loosen the spray gun nut from above, and the spray gun nut and the spray gun connecting pipe are taken out as a whole through the tool, and the parts can be conveniently taken out after being inverted.

Description

Technical Field

[0001] This utility model relates to the field of spray gun installation and maintenance technology, specifically to a tool for conveniently disassembling and replacing spray gun connectors. Background Technology

[0002] The spray gun is a key piece of equipment in the steel smelting process. For example... Figure 2 and Figure 3 The existing spray gun connector (I) is typically installed between two rollers (II), where the roller gap is narrow. Maintenance requires operation from below, but the limited space below makes operation inconvenient, easily leading to difficulties in disassembly and assembly, low efficiency, and parts falling off. Therefore, there is an urgent need for a specialized tool that allows operation from above and has anti-fall-off functionality to improve the efficiency and safety of spray gun connector disassembly and assembly. Utility Model Content

[0003] To overcome the shortcomings of the existing technology, a tool for conveniently disassembling and replacing the spray gun nozzle is provided to solve the problems existing in the prior art.

[0004] To achieve the above objectives, a tool for conveniently disassembling and replacing the spray gun nozzle is provided, including a connecting rod, an internal hex screw, and a clamping block; The lower end of the connecting rod is fixed with a clamping block by an internal hexagon screw, and an inclined through hole is opened in the middle of the connecting rod. A steel ball is installed inside the through hole, and a retaining ring is sleeved on the outside of the through hole. A through hole for installing the steel ball is provided below the clamping block, and a set screw is installed on the outside of the through hole at the lower end of the clamping block. A spring is provided between the set screw and the steel ball. The clamping block is locked onto the spray gun nut installed on the spray gun mounting tube, and the spray gun connector at the upper end of the spray gun nut is inserted into the connecting rod.

[0005] Furthermore, a steel ball is interference-fitted into the through hole in the middle of the connecting rod, and the steel ball is detachable inside the through hole in the middle of the connecting rod.

[0006] Furthermore, the retaining ring is an elastic rubber ring, the inner diameter of the retaining ring is 0.5-1mm smaller than the outer diameter of the through hole in the middle of the connecting rod, the retaining ring is sleeved on the outside of the through hole by interference fit, and the thickness of the retaining ring is 3-5mm.

[0007] Furthermore, the space between the steel ball installed at the bottom of the clamping block and the connecting rod matches the spray gun nut.

[0008] Furthermore, the upper end of the connecting rod is provided with a handle, which is integrally formed with the connecting rod. The outer circumference of the handle is covered with an anti-slip silicone sleeve, and the surface of the anti-slip silicone sleeve is provided with diamond-shaped anti-slip texture.

[0009] The beneficial effects of this utility model are as follows: This utility model features two independent anti-detachment mechanisms, one for locking the spray gun nut and the other for locking the spray gun connector. During operation, the user can loosen the spray gun nut from above and use this tool to remove the spray gun nut and connector as a whole. After removal, inverting the device allows for easy removal of the parts. This design effectively solves the operational challenges in confined spaces, improving on-site maintenance efficiency and safety. Attached Figure Description

[0010] Figure 1 This is a three-dimensional unfolded schematic diagram of the structure of this utility model; Figure 2 This is a front view diagram of the existing spray gun connector installation; Figure 3 Top view diagram of the installation of the existing spray gun connection; Figure 4 This is a three-dimensional schematic diagram of the connecting rod structure of this utility model.

[0011] In the diagram: 1. Connecting rod; 2. Retaining ring; 3. Steel ball; 4. Socket head screw; 5. Spring; 6. Set screw; 7. Clamping block; 8. Spray gun connector; 9. Spray gun nut; 10. Spray gun mounting tube; I. Spray gun connector; II. Roller shaft; III. Spray gun mounting tube. Detailed Implementation

[0012] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0013] Reference Figures 1 to 4 As shown, this utility model provides a tool for convenient disassembly and replacement of the spray gun connector, including a connecting rod 1, an internal hex screw 4, and a clamping block 7; The lower end of the connecting rod 1 is fixed with a clamping block 7 by an internal hex screw 4, and an inclined through hole is opened in the middle of the connecting rod 1. A steel ball 3 is installed inside the through hole, and a retaining ring 2 is sleeved on the outside of the through hole. A through hole for installing the steel ball 3 is provided below the clamping block 7, and a set screw 6 is installed on the outside of the through hole at the lower end of the clamping block 7. A spring 5 is provided between the set screw 6 and the steel ball 3. The clamping block 7 is locked on the spray gun nut 9 installed on the spray gun mounting tube 10, and the spray gun connecting tube 8 at the upper end of the spray gun nut 9 is inserted into the connecting rod 1.

[0014] The steel ball 3 installed inside the through hole in the middle of the connecting rod 1 is removable.

[0015] The extension rod 1, serving as the main support component of the tool, is made of 304 stainless steel. This material combines high strength and corrosion resistance, allowing it to withstand complex environments such as oil stains and minor chemical reagents that may come into contact with the spray gun during maintenance, effectively preventing problems such as rust and deformation after long-term use. The extension rod 1 is cylindrical in shape, with a length designed to be 280-320mm. This length range balances "convenience for operation from above" and "structural stability"—allowing the operator to reach the spray gun connector 8 below while standing above roller II without bending over or reaching into narrow spaces, while also preventing wobbling during operation due to excessive length.

[0016] The connecting rod 1 has an axially oriented cavity inside, the inner diameter of which matches the outer diameter of the spray gun connector 8, with a tolerance controlled within ±0.2mm. This ensures that the spray gun connector 8 fits tightly against the steel ball 3 installed in the middle of the connecting rod 1 after insertion, without being too tight and causing difficulty in insertion and removal. This also reduces friction during the removal of the spray gun connector 8.

[0017] Near the lower end of the middle of the connecting rod 1, there are three oblique through holes. The through holes are connected to the receiving cavity. The inclination angle of the through holes is 45°-60°. This angle allows the steel ball (3) to accurately contact the outer wall of the spray gun connector 8 after installation, realizing the "locking and positioning" function. The inner diameter of the through holes is designed to be 8-10mm, divided into "small diameter section near the receiving cavity" and "large diameter section near the outer wall". The inner diameter of the small diameter section is 1-1.5mm smaller than the diameter of the steel ball 3, which can prevent the steel ball 3 from falling completely into the receiving cavity and affecting the insertion of the spray gun connector 8. The inner diameter of the large diameter section is 0.5-1mm larger than the diameter of the steel ball 3, providing space for the movement of the steel ball 3, and facilitating the installation and removal of the steel ball 3.

[0018] The upper end of the extension rod 1 has an integrally formed cylindrical handle. The handle diameter is 15-20mm larger than the main body diameter of extension rod 1, and the length is 80-100mm. This size design conforms to ergonomics, making it convenient for operators to grip and exert force. The outer circumference of the handle is tightly fitted with a 3-5mm thick anti-slip silicone sleeve. The silicone sleeve is made of food-grade silicone, which is soft and has excellent anti-slip performance. The surface of the silicone sleeve is embossed with diamond-shaped anti-slip texture, with a raised texture height of 1-1.5mm, which can further enhance the friction between the hand and the handle, so that even if the hands are oily, the grip can be stable and prevent the tool from slipping out of the hand during operation.

[0019] The retaining ring 2 is an elastic rubber ring. The inner diameter of the retaining ring 2 is 0.5-1mm smaller than the outer diameter of the through hole in the middle of the connecting rod 1. The retaining ring 2 is fitted on the outside of the through hole by interference fit, and the thickness of the retaining ring 2 is 3-5mm.

[0020] The space between the steel ball 3 installed at the bottom of the clamping block 7 and the connecting rod 1 matches the spray gun nut 9.

[0021] The clamping block 7 has an overall "U" shape with the opening facing downwards. The opening width is adapted to the outer diameter of the spray gun nut 9, ensuring that the clamping block 7 can be accurately locked onto the spray gun nut 9 to fix the nut. The steel ball 3 installed at the bottom of the clamping block 7 prevents the disassembled spray gun nut 9 from falling off.

[0022] The inner diameter of the through hole for mounting the steel ball 3 on the clamping block 7 is divided into two sections: the inner diameter of the section near the "U"-shaped opening is 1-1.2mm smaller than the diameter of the steel ball 3, which can limit the range of motion of the steel ball 3 and prevent the steel ball 3 from completely entering the "U"-shaped opening and affecting the clamping of the spray gun nut 9; the section away from the "U"-shaped opening is a threaded hole, which is adapted to the external thread of the set screw 6 and is used to install the set screw 6.

[0023] The upper end of the connecting rod 1 is provided with a handle, which is integrally formed with the connecting rod 1. The outer circumference of the handle is covered with an anti-slip silicone sleeve, and the surface of the anti-slip silicone sleeve is provided with diamond-shaped anti-slip texture.

[0024] The operator stands above roller II, holding the handle at the upper end of connecting rod 1, and aligns the tool with the spray gun connector 8 between the two rollers II. The tool is slowly moved downwards, gradually inserting the upper end of the spray gun connector 8 into the receiving cavity of connecting rod 1. Simultaneously, the "U"-shaped opening of clamp 7 is adjusted so that it engages with the outside of the spray gun nut 9 on the spray gun mounting tube 10, until the arc-shaped groove of clamp 7 is fully engaged with the spray gun nut 9. During insertion, the steel ball 3 in the middle of connecting rod 1 will slightly move outwards from the through hole under the pressure of the spray gun connector 8. After the spray gun connector 8 is fully inserted, the steel ball 3, in cooperation with the retaining ring 2, returns to its original position, tightly fitting the outer wall of the spray gun connector 8, thus locking the spray gun connector 8. At the same time, the steel ball 3 at clamp 7, under the elastic force of spring 5, presses against the lower surface of the spray gun nut 9, completing the locking of the spray gun nut 9. At this point, the tool is gently pulled to confirm that the spray gun connector 8 and the nut show no signs of falling off. After confirming the lock is tightened, the operator holds the handle and rotates the connecting rod 1 clockwise. This rotates the spray gun nut 9 synchronously through the clamping block 7, gradually unscrewing the nut from the spray gun mounting tube 10. During rotation, the tool must be kept stable to prevent the clamping block 7 from disengaging from the nut due to shaking. If the nut is too tight, the rotation force can be increased appropriately, but excessive force should be avoided to prevent damage to the tool or parts. After the spray gun nut 9 is completely unscrewed, keep the tool vertically upward and move it to remove the spray gun connector 8 and the spray gun nut 9 together from the narrow space between the rollers II. After removal, invert the tool. At this time, the steel ball 3 in the middle of the connecting rod 1 moves slightly under gravity, and the steel ball 3 at the clamping block 7 presses down and retracts, releasing the locking state. The spray gun connector 8 and the spray gun nut 9 can then be easily removed from the tool, completing the disassembly.

Claims

1. A tool for conveniently disassembling and replacing the spray gun hose, characterized in that: The assembly includes a connecting rod (1), an internal hexagon screw (4), and a clamping block (7). The lower end of the connecting rod (1) is fixed with the clamping block (7) by the internal hexagon screw (4), and an inclined through hole is opened in the middle of the connecting rod (1). A steel ball (3) is installed inside the through hole, and a retaining ring (2) is sleeved on the outside of the through hole. A through hole for installing the steel ball (3) is provided below the clamping block (7), and a set screw (6) is installed on the outside of the through hole at the lower end of the clamping block (7). A spring (5) is provided between the set screw (6) and the steel ball (3). The clamping block (7) is clamped on the spray gun nut (9) installed on the spray gun mounting tube (10), and the spray gun connector (8) at the upper end of the spray gun nut (9) is inserted inside the connecting rod (1).

2. The tool for convenient disassembly and replacement of the spray gun hose according to claim 1, characterized in that: The steel ball (3) is interference-fitted into the through hole in the middle of the connecting rod (1), and the steel ball (3) is detachable inside the through hole in the middle of the connecting rod (1).

3. The tool for convenient disassembly and replacement of the spray gun hose according to claim 1, characterized in that: The retaining ring (2) is an elastic rubber ring. The inner diameter of the retaining ring (2) is 0.5-1mm smaller than the outer diameter of the through hole in the middle of the connecting rod (1). The retaining ring (2) is fitted on the outside of the through hole by interference fit, and the thickness of the retaining ring (2) is 3-5mm.

4. The tool for conveniently disassembling and replacing the spray gun hose according to claim 1, characterized in that: The space between the steel ball (3) installed at the bottom of the clamp (7) and the connecting rod (1) matches the spray gun nut (9).

5. The tool for conveniently disassembling and replacing the spray gun hose according to claim 1, characterized in that: The upper end of the connecting rod (1) is provided with a handle. The handle and the connecting rod (1) are integrally formed. The outer circumference of the handle is covered with an anti-slip silicone sleeve, and the surface of the anti-slip silicone sleeve is provided with a diamond-shaped anti-slip texture.

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