A clamp for quick nozzle replacement

Abstract

This utility model discloses a clamp for quick-change nozzles, including a fixed clamp arm, a movable clamp arm, a rotating shaft, and a fixing component. The fixed clamp arm and the movable clamp arm are hinged together by the rotating shaft, and both have locking structures at their ends away from the rotating shaft. The fixed clamp arm has a connecting body with a first connecting head and a second connecting head that pass through it axially. The fixing component has a cavity inside for the nozzle to pass through. The fixing component is detachably connected to the second connecting head and together with the second connecting head forms an axial fixation for the nozzle. The clamp arm structure with the rotating shaft allows the movable clamp arm to open and close quickly, facilitating the clamp's fixation on spraying equipment. The detachable connection between the fixing component and the second connecting head, together fixing the nozzle, forms a double axial constraint, preventing the nozzle from shifting or loosening under fluid pressure and enhancing stability. The cavity design of the through-structure fixing component accommodates various nozzle sizes, improving compatibility, and is especially suitable for frequent nozzle replacement scenarios, such as agricultural spraying.

Description

Technical Field

[0001] This utility model relates to the field of spray equipment technology, specifically to a clamp that allows for quick nozzle replacement. Background Technology

[0002] In the field of spray equipment (such as agricultural spraying), nozzles often need to be changed to different atomization types or flow rates depending on the operating conditions. Traditional nozzle fixing methods use direct threaded connections between the nozzle and the equipment pipeline. When replacing nozzles of different diameters, they cannot be adapted to the equipment pipeline and require adapters. To address these shortcomings, current designs use elastic claws or lever locks to fix the nozzles. While this shortens replacement time, it has drawbacks: the claws are prone to fatigue fracture under fluid pulsation impact, and the locks have a high probability of accidentally popping open in vibrating environments, easily causing the nozzle to detach.

[0003] In summary, there is an urgent need for a clamp structure that is easy to operate, highly adaptable, and highly stable. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a clamp for quick-change nozzles. It features a hinged clamp arm assembly and a locking structure, facilitating stable fixation on spraying equipment and ensuring a secure clamp arm closure, eliminating the risk of accidental opening. The clamp arm assembly incorporates a connector and a through-type fixing component. This through-type fixing component has a cavity design adaptable to various nozzle sizes. The fixing component and connector together secure the nozzle, forming a double axial constraint to prevent displacement or loosening of the nozzle under fluid pressure, thus enhancing stability.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A clamp for quick-change nozzles includes a fixed clamp arm, a movable clamp arm, a rotating shaft, and a fixing member. The fixed clamp arm and the movable clamp arm are hinged together by the rotating shaft. The ends of the fixed clamp arm and the movable clamp arm away from the rotating shaft are provided with locking structures for locking the clamp arm in a closed state. The fixed clamp arm is provided with a connecting body, which has an axially through first connecting head and a second connecting head. The fixing member is a through structure with an internal cavity for the nozzle to pass through. The fixing member is detachably connected to the second connecting head and together with the second connecting head, it forms an axial fixation for the nozzle.

[0007] Furthermore, the locking structure includes a through hole I on the fixed clamp arm, a through hole II on the movable clamp arm, and a locking member; when the clamp arm is closed, the through hole I and the through hole II are coaxially aligned, and the locking member is screwed into the through hole I and the through hole II in sequence to achieve locking.

[0008] Furthermore, the inner diameter of the second connector is larger than that of the first connector, forming a water-filled cavity inside the connector.

[0009] Furthermore, the fixing member is a screw-on fixing cap, the outer periphery of the second connector is provided with an external thread, and the fixing member is provided with an internal thread that matches the external thread, so that the detachable connection with the connector is achieved by screwing the thread.

[0010] Furthermore, the inner wall of the cavity of the fixing member is provided with an axial limiting step for abutting the nozzle flange.

[0011] Compared with existing technologies, this patented technical solution achieves the following beneficial effects: The hinged clamp arm structure allows for quick opening and closing of the movable clamp arm, facilitating clamp fixation on spraying equipment. The fixing component and the second connector are detachably connected and jointly secure the nozzle, forming a double axial constraint to prevent nozzle displacement or loosening under fluid pressure, thus enhancing stability. The through-structure fixing component's cavity design accommodates various nozzle sizes and is structurally independent of specific nozzle shapes, improving compatibility and making it particularly suitable for scenarios requiring frequent changes, such as agricultural spraying. Attached Figure Description

[0012] Figure 1 The diagram shown is a schematic diagram of the assembly structure of this utility model;

[0013] Figure 2 The diagram shown is an exploded view of the present invention.

[0014] Figure 3 The diagram shown is a schematic diagram of the clamp arm assembly structure of this utility model;

[0015] Figure 4 The diagram shown is a schematic diagram of the clamp arm assembly structure of this utility model;

[0016] Figure 5 The diagram shows the structural schematics of clamp components of different specifications;

[0017] Figure 6 The diagram shows the structural schematics of clamp components of different specifications.

[0018] In the diagram: 1. Fixed clamp arm; 2. Movable clamp arm; 3. Rotating shaft; 4. Fixing component; 5. Nozzle; 10. Connector; 11. Through hole I; 21. Through hole II; 40. Cavity; 101. First connector; 102. Second connector; 103. Water cavity; 401. Limiting step. Detailed Implementation

[0019] 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.

[0020] See Figure 1-4 As shown, this embodiment provides a clamp for quick-change of nozzles, including a fixed clamp arm 1, a movable clamp arm 2, a rotating shaft 3, and a fixing member 4. The fixed clamp arm 1 and the movable clamp arm 2 are hinged together by the rotating shaft 3. The ends of the fixed clamp arm 1 and the movable clamp arm 2 away from the rotating shaft 3 are provided with locking structures for locking the clamp arms in the closed state. The fixed clamp arm 1 is provided with a connecting body 10, which has an axially through first connecting head 101 and a second connecting head 102. The fixing member 4 is a through structure, and its interior has a cavity 40 for the nozzle 5 to pass through. The fixing member 4 is detachably connected to the second connecting head 102 and together with the second connecting head 102, it forms an axial fixation for the nozzle 5. The clamp arm structure hinged by the rotating shaft 3 allows the movable clamp arm 2 to open and close quickly, facilitating the clamp's fixation on the spraying equipment. The fixing member 4 and the second connecting head 102 are detachably connected and together fix the nozzle, forming a double axial constraint to prevent the nozzle from shifting or loosening under fluid pressure, thus enhancing stability. The cavity 40 of the through-structure fixing component 4 is designed to accommodate nozzles of various shapes or sizes, and its structure is not dependent on a specific nozzle shape, thus improving compatibility.

[0021] The locking structure includes a through hole I11 on the fixed clamp arm 1, a through hole II21 on the movable clamp arm 2, and a locking element. When the clamp arms are closed, through holes I11 and II21 are coaxially aligned, and the locking element is screwed into through holes I11 and II21 in sequence to achieve locking. Specifically, the through holes have internal threads, and the locking element is a screw. The screw passes through the two internally threaded through holes in sequence to lock the fixed clamp arm 1 and the movable clamp arm 2. Alternatively, if the through holes are not internally threaded, the screw passes through the two through holes in sequence, and then a nut is used to screw the screw in to lock the fixed clamp arm 1 and the movable clamp arm 2. This mechanical locking method, where the screw is screwed in after the through holes are aligned, provides a strong clamp arm closing force and structurally eliminates the risk of the clamp arms accidentally springing open under vibration or high pressure, ensuring operational safety. The screw locking structure requires only simple tools, such as a wrench, or manual tightening to complete the locking, reducing the user's operational effort compared to complex snap-fit ​​or lever structures.

[0022] The inner diameter of the second connector 102 is larger than that of the first connector 101, forming a water cavity 103 inside the connector 10. The water cavity structure expands the fluid channel, reduces turbulence and resistance at the connection, and structurally avoids pressure loss caused by direct diameter reduction, thereby improving the atomization effect of the nozzle.

[0023] The fixing member 4 is a screw-on fixing cap. The outer circumference of the second connector 102 is provided with external threads, and the fixing member 4 is provided with internal threads that match the external threads. The screw-on connection achieves a detachable connection with the connector 10. The screw-on design allows users to manually rotate the fixing member 4 to fix or release the nozzle without tools. Structurally, it allows for one-tight replacement, significantly shortening replacement time. The threaded engagement provides uniform axial pressure, ensuring no gaps between the nozzle and the connector 10, and structurally preventing fluid leakage.

[0024] The inner wall of the cavity 40 of the fixing member 4 is provided with an axial limiting step 401 for abutting the flange of the nozzle 5. The limiting step 401 structure provides a hard stop point to ensure that the axial position is consistent when the nozzle is inserted, avoiding over-insertion or under-insertion.

[0025] See Figure 5-6 As shown, this patented technical solution also provides fixed clamp arm 1 and movable clamp arm 2 with various specifications and sizes to achieve coordinated size expansion of fixed clamp arm 1 and movable clamp arm 2, resulting in a solution covering all scenarios, while maintaining the simplicity and high reliability of the structure.

Claims

1. A clamp for quick-change nozzles, characterized in that, It includes a fixed clamp arm (1), a movable clamp arm (2), a rotating shaft (3), and a fixing member (4); the fixed clamp arm (1) and the movable clamp arm (2) are hinged through the rotating shaft (3), and the ends of the fixed clamp arm (1) and the movable clamp arm (2) away from the rotating shaft (3) are provided with a locking structure for locking the clamp arm in a closed state; the fixed clamp arm (1) is provided with a connecting body (10), which is provided with a first connecting head (101) and a second connecting head (102) that are axially connected; the fixing member (4) is a through structure, and its interior is provided with a cavity (40) for the nozzle (5) to pass through; the fixing member (4) is detachably connected to the second connecting head (102), and together with the second connecting head (102), it forms an axial fixation of the nozzle (5).

2. The quick-change nozzle clamp according to claim 1, characterized in that, The locking structure includes a through hole I (11) on the fixed clamp arm (1), a through hole II (21) on the movable clamp arm (2), and a locking member; when the clamp arm is closed, the through hole I (11) and the through hole II (21) are coaxially aligned, and the locking member is screwed into the through hole I (11) and the through hole II (21) in sequence to achieve locking.

3. The quick-change nozzle clamp according to claim 1 or 2, characterized in that, The inner diameter of the second connector (102) is larger than the inner diameter of the first connector (101), forming a water cavity (103) inside the connector (10).

4. The quick-change nozzle clamp according to claim 3, characterized in that, The fixing member (4) is a screw-on fixing cover. The outer periphery of the second connector (102) is provided with an external thread, and the fixing member (4) is provided with an internal thread that matches the external thread. The detachable connection with the connector (10) is achieved by screwing the thread.

5. The quick-change nozzle clamp according to claim 4, characterized in that, The inner wall of the cavity (40) of the fixing member (4) is provided with an axial limiting step (401) for abutting the nozzle flange.

Images