Quick-change structure for mounting spray gun

Abstract

The utility model belongs to the technical field of ammonia water spray guns, and particularly relates to a quick-change structure for mounting a spray gun, which comprises a sleeve, a quick-change connector fixedly connected to one side of the outside of the sleeve, a spray gun body detachably connected to the inside of the sleeve, a lantern ring fixedly connected to the inside of the quick-change connector, and elastic pieces fixedly connected to two sides of the outside of the lantern ring at equal intervals. Sliding sleeves are slidably connected to the positions, located on the two sides of the lantern ring, in the quick-change connector, clamping grooves are formed in the two sides of the exterior of the spray gun body, and clamping blocks matched with the clamping grooves are slidably connected to the two sides of the interior of the quick-change connector. The utility model provides a quick-change structure for mounting a spray gun, and solves the problems that in the prior art, when an ammonia water spray gun is replaced, operation of a denitration device and related equipment needs to be stopped, then a plurality of screws are screwed off to disassemble and replace the spray gun, long time is needed for disassembly and adjustment, quick disassembly and replacement cannot be carried out, and the spray gun cannot be replaced quickly. And the shutdown time of equipment is long, so that the overall production efficiency is reduced.

Description

A quick-change structure for spray gun mounting Technical Field

[0001] This utility model belongs to the field of ammonia spray guns, specifically a quick-change structure for spray gun installation. Background Technology

[0002] Ammonia spray guns (also called ammonia injection systems) are mainly used in denitrification technology, especially in selective catalytic reduction and selective non-catalytic reduction processes. Their function is to spray ammonia water as a reducing agent into the flue gas to promote the reaction of nitrogen oxides with ammonia water and convert them into harmless nitrogen gas and water vapor, thereby achieving the purpose of denitrification.

[0003] In the existing technology, replacing the ammonia spray gun requires stopping the operation of the denitrification device and related equipment. Then, the spray gun needs to be disassembled and replaced by unscrewing multiple screws. This process takes a long time to disassemble and adjust, and cannot be done quickly, resulting in long equipment downtime and reducing overall production efficiency. Summary of the Invention

[0004] In view of the above-mentioned problems existing in the prior art, the main objective of this utility model is to provide a quick-change structure for spray gun installation.

[0005] The technical solution of this utility model is as follows: a quick-change structure for spray gun installation includes a sleeve, a quick-change connector fixedly connected to the outer side of the sleeve, a spray gun body detachably connected to the inside of the sleeve, a collar fixedly connected to the inside of the quick-change connector, elastic plates fixedly connected at equal intervals on both outer sides of the collar, sliding sleeves slidably connected to the inside of the quick-change connector and on both sides of the collar, slots are provided on both outer sides of the spray gun body, and locking blocks that cooperate with the slots are slidably connected to both inner sides of the quick-change connector, and a transmission component is provided inside the quick-change connector.

[0006] In a preferred embodiment, the transmission assembly includes a bidirectional lead screw and a linkage unit. The bidirectional lead screw is rotatably connected to the top of the quick-change joint. Two sliding sleeves are respectively connected to the outer sides of the bidirectional lead screw via lead screw and nut pairs. A rotating wheel is fixedly connected to the outside of the bidirectional lead screw. Threaded holes are equidistantly opened on one side of the outer side of the rotating wheel. A limit frame is fixedly connected to the outer side of the quick-change joint. A bolt is threadedly connected to the inner side of the limit frame. The bolt is threadedly connected to the threaded hole. The locking block can slide through the linkage unit.

[0007] In a preferred embodiment, the linkage unit includes a fixed frame, which is fixedly connected to the outer side of the quick-change connector. One end of the bidirectional lead screw extends into the interior of the fixed frame and is fixedly connected to a first bevel gear. Rotary shafts are rotatably connected to both sides of the interior of the fixed frame. A second bevel gear is fixedly connected to one end of each shaft near the first bevel gear. The first bevel gear meshes with each of the two second bevel gears. A first synchronous pulley is fixedly connected to the other end of each shaft. Adjusting lead screws are symmetrically rotatably connected to the interior of the fixed frame extending into the interior of the quick-change connector. A second synchronous pulley is fixedly connected to one end of each adjusting lead screw. The first and second synchronous pulleys are connected via a synchronous belt drive. Two locking blocks are connected to the exterior of their respective adjusting lead screws via lead screw and nut pairs.

[0008] In a preferred embodiment, an air inlet and a liquid inlet are respectively provided on the outer side of the spray gun body.

[0009] In a preferred embodiment, the threads of the two adjusting screws are in the same direction.

[0010] In a preferred embodiment, the outer side of the wheel is provided with an anti-slip knurling pattern.

[0011] The beneficial effects of this utility model are as follows:

[0012] This device allows for quick disassembly and replacement of the spray gun body via quick-change connectors, avoiding complex operations and effectively improving the efficiency of disassembly and replacement of the spray gun body. It eliminates the need for lengthy disassembly and installation, thereby reducing equipment downtime and improving overall production efficiency. Attached Figure Description

[0013] The present invention will be further described below with reference to the accompanying drawings.

[0014] Figure 1 is a perspective view of this utility model;

[0015] Figure 2 is a cross-sectional view of this utility model;

[0016] Figure 3 is a side sectional view of this utility model;

[0017] Figure 4 is a cross-sectional view of the spray gun body in this utility model;

[0018] Figure 5 is an enlarged view of point A in Figure 3 of this utility model.

[0019] In the diagram: 1. Sleeve; 2. Quick-change connector; 3. Spray gun body; 4. Collar; 5. Elastic plate; 6. Sliding sleeve; 7. Slot; 8. Block; 9. Double-acting screw; 10. Rotary wheel; 11. Threaded hole; 12. Limiting bracket; 13. Bolt; 14. Fixing bracket; 15. First bevel gear; 16. Rotating shaft; 17. Second bevel gear; 18. First synchronous pulley; 19. Adjusting screw; 20. Second synchronous pulley; 21. Synchronous belt. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] Please refer to Figures 1-5. A quick-change structure for spray gun installation includes a sleeve 1. A quick-change connector 2 is fixedly connected to the outer side of the sleeve 1. A spray gun body 3 is detachably connected to the inside of the sleeve 1. A collar 4 is fixedly connected to the inside of the quick-change connector 2. Elastic plates 5 are fixedly connected at equal intervals on both outer sides of the collar 4. Sliding sleeves 6 are slidably connected to the inside of the quick-change connector 2 on both sides of the collar 4. A slot 7 is provided on both outer sides of the spray gun body 3. A locking block 8 that mates with the slot 7 is slidably connected to both inner sides of the quick-change connector 2. A transmission component is provided inside the quick-change connector 2.

[0022] Specifically, the transmission assembly includes a bidirectional lead screw 9 and a linkage unit. The bidirectional lead screw 9 is rotatably connected to the top of the quick-change joint 2. Two sliding sleeves 6 are respectively connected to the outer sides of the bidirectional lead screw 9 through a lead screw nut pair. A rotating wheel 10 is fixedly connected to the outside of the bidirectional lead screw 9. Threaded holes 11 are equidistantly opened on one side of the outer side of the rotating wheel 10. A limit frame 12 is fixedly connected to the outer side of the quick-change joint 2. A bolt 13 is threadedly connected to the inner side of the limit frame 12. The bolt 13 is threadedly connected to the threaded hole 11. The locking block 8 can slide through the linkage unit. The linkage unit includes a fixed frame 14, which is fixedly connected to the outer side of the quick-change joint 2. One end of the bidirectional lead screw 9 extends into the interior of the fixed frame 14. A first bevel gear 15 is fixedly connected. Rotary shafts 16 are rotatably connected to both sides of the interior of the fixed frame 14. A second bevel gear 17 is fixedly connected to one end of each of the two rotating shafts 16 near the first bevel gear 15. The first bevel gear 15 meshes with the two second bevel gears 17 respectively. A first synchronous pulley 18 is fixedly connected to the other end of each of the two rotating shafts 16. Adjusting screws 19 are symmetrically rotatably connected to the interior of the quick-change joint 2 extending from the lower interior of the fixed frame 14. A second synchronous pulley 20 is fixedly connected to one end of each of the two adjusting screws 19. The first synchronous pulley 18 and the second synchronous pulley 20 are connected by a synchronous belt 21. Two locking blocks 8 are connected to the outside of the corresponding adjusting screw 19 through screw nut pairs.

[0023] Through the above technical solution, firstly, one end of the sleeve 1 is inserted into the hole in the outer wall of the boiler for a certain distance. Then, the sleeve 1 is welded to the outer wall of the boiler. Next, the spray gun body 3 is inserted into the quick-change connector 2, so that one end of the spray gun body 3 extends into the interior of the boiler. Manually rotating the rotating wheel 10 can drive the double-acting screw 9 and the first bevel gear 15 to rotate, so that the double-acting screw 9 drives the two sliding sleeves 6 to move inward through the screw nut pair. Thus, the sliding sleeves 6 squeeze the elastic plates 5 on both sides, thereby pressing the spray gun body 3 tightly through the multiple elastic plates 5. At the same time, during the rotation of the first bevel gear 15, the two second bevel gears 17 and the rotating shaft 16 can be driven to rotate through the meshing relationship. The rotating shaft 16 then drives the corresponding first synchronous pulley 18 to rotate, so that the first synchronous pulley 18... The timing belt 21 drives the corresponding second timing pulley 20 and adjusting screw 19 to rotate. The adjusting screw 19 then drives the corresponding locking block 8 to move inward until the two locking blocks 8 move into the corresponding slot 7. Then, the bolt 13 is rotated and screwed into the corresponding threaded hole 11. The locking block 8, together with the two sets of elastic plates 5, can stably fix the spray gun body 3. When the spray gun body 3 needs to be disassembled and replaced, the bolt 13 is screwed out of the threaded hole 11. Then, the spray gun body 3 can be quickly disassembled by performing the operation in the reverse order. The installation of a new spray gun body 3 is the same. This effectively improves the efficiency of disassembling and replacing the spray gun body 3, eliminating the need for long disassembly and installation times, thereby reducing equipment downtime and improving overall production efficiency.

[0024] Specifically, an air inlet and a liquid inlet are respectively provided on the outer side of the spray gun body 3, the threads of the two adjusting screws 19 are in the same direction, and the outer side of the rotating wheel 10 is provided with anti-slip knurling.

[0025] The above technical solution allows for easy connection to external liquid and gas circuits via the provided air and liquid inlets.

[0026] In use, first insert one end of the sleeve 1 into the hole in the outer wall of the boiler a certain distance, then weld the sleeve 1 to the outer wall of the boiler. Next, insert the spray gun body 3 into the quick-change connector 2, so that one end of the spray gun body 3 extends into the interior of the boiler. Manually rotating the rotating wheel 10 can drive the double-acting screw 9 and the first bevel gear 15 to rotate, so that the double-acting screw 9 drives the two sliding sleeves 6 to move inward through the screw nut pair, thereby squeezing the elastic plates 5 on both sides through the sliding sleeves 6, thus pressing the spray gun body 3 tightly through the multiple elastic plates 5. At the same time, during the rotation of the first bevel gear 15, it can drive the two second bevel gears 17 and the rotating shaft 16 to rotate through the meshing relationship. The rotating shaft 16 then drives the corresponding first synchronous pulley 18 to rotate, so that the first synchronous pulley 18 drives the corresponding second synchronous pulley 18 through the synchronous belt 21. The step wheel 20 and the adjusting screw 19 rotate, and the adjusting screw 19 drives the corresponding locking block 8 to move inward until the two locking blocks 8 move into the corresponding locking slot 7. Then, the bolt 13 is rotated and screwed into the corresponding threaded hole 11. The locking block 8 and the two sets of elastic plates 5 can then be used to stably fix the spray gun body 3. When the spray gun body 3 needs to be disassembled and replaced, the bolt 13 is screwed out of the threaded hole 11. Then, the spray gun body 3 can be quickly disassembled by performing the operation in the reverse order of the above process. The installation of a new spray gun body 3 is the same, which effectively improves the efficiency of disassembling and replacing the spray gun body 3. It eliminates the need for long disassembly and installation, thereby reducing equipment downtime and improving overall production efficiency. The air inlet and liquid inlet can be easily connected to the external liquid and air circuits.

[0027] The aforementioned front, back, left, right, top, and bottom are all based on Figure 1 in the accompanying drawings of the instruction manual. According to the perspective of the observer, the side of the device facing the observer is defined as front, the left side of the observer is defined as left, and so on.

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0029] 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 illustrative of the principles of this 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 quick-change structure for spray gun installation, comprising a sleeve (1), characterized in that, A quick-change connector (2) is fixedly connected to the outer side of the sleeve (1). The spray gun body (3) is detachably connected inside the sleeve (1). A collar (4) is fixedly connected inside the quick-change connector (2). Elastic plates (5) are fixedly connected at equal intervals on both sides of the outer side of the collar (4). Sliding sleeves (6) are slidably connected inside the quick-change connector (2) and on both sides of the collar (4). A slot (7) is provided on both sides of the outer side of the spray gun body (3). A locking block (8) that cooperates with the slot (7) is slidably connected on both sides of the inner side of the quick-change connector (2). A transmission component is provided inside the quick-change connector (2).

2. The quick-change structure for spray gun installation according to claim 1, characterized in that, The transmission assembly includes a bidirectional lead screw (9) and a linkage unit. The bidirectional lead screw (9) is rotatably connected to the top of the quick-change joint (2). The two sliding sleeves (6) are respectively connected to the outer sides of the bidirectional lead screw (9) through the lead screw nut pair. A rotating wheel (10) is fixedly connected to the outside of the bidirectional lead screw (9). Threaded holes (11) are equally spaced on the outer side of the rotating wheel (10). A limit frame (12) is fixedly connected to the outer side of the quick-change joint (2). A bolt (13) is threadedly connected to the inner side of the limit frame (12). The bolt (13) is threadedly connected to the threaded hole (11). The locking block (8) can slide through the linkage unit.

3. The quick change structure for a spray gun mounting according to claim 2, characterized in that, The linkage unit includes a fixed frame (14), which is fixedly connected to the outer side of the quick-change connector (2). One end of the bidirectional lead screw (9) extends into the interior of the fixed frame (14) and is fixedly connected to a first bevel gear (15). Rotary shafts (16) are rotatably connected to both sides of the interior of the fixed frame (14). A second bevel gear (17) is fixedly connected to one end of each of the two rotating shafts (16) near the first bevel gear (15). The first bevel gear (15) meshes with the two second bevel gears (17) respectively. Then, the other ends of the two rotating shafts (16) are fixedly connected to the first synchronous pulley (18), and the inside of the fixed frame (14) extends to the inside of the quick-change joint (2) and is symmetrically connected to the adjusting screw (19). One end of the two adjusting screws (19) is fixedly connected to the second synchronous pulley (20). The first synchronous pulley (18) and the second synchronous pulley (20) are connected by a synchronous belt (21). The two locking blocks (8) are respectively connected to the outside of the corresponding adjusting screw (19) through the screw nut pair.

4. The quick change structure for a spray gun mounting according to claim 3, characterized in that, The spray gun body (3) has an air inlet and a liquid inlet on its outer side.

5. The quick change structure for a spray gun mounting according to claim 4, characterized in that, The threads of the two adjusting screws (19) are in the same direction.

6. The quick-change structure for spray gun installation according to claim 5, characterized in that, The outer side of the wheel (10) is provided with anti-slip knurling.

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