Quick detachable valve needle structure

Abstract

The utility model relates to valve technical field discloses the valve needle structure of quick detachable, including upper valve stem, the bottom fixed connection of upper valve stem has assembly jaw, the inside slide connection of assembly jaw has quick detachable clamping mechanism, the inside slide connection of assembly jaw has locking fastening mechanism, quick detachable clamping mechanism includes lower valve needle, the top fixed connection of lower valve needle has assembly head, the inside slide connection of assembly head outside in two assembly jaw. In the utility model, quick detachable clamping mechanism helps the dismounting button, drives dismounting push rod, platen operation, makes lower valve needle to complete dismounting quickly, saves maintenance replacement time greatly, reduces operation difficulty and manpower cost, guarantees the connection stability, locking fastening mechanism relies on rotating antiskid locking wheel, drives locking rotating lever and the convex stick locking assembly jaw, effectively prevents valve needle slack, promotes the connection stability, reduces the component wear, guarantees the reliable operation of valve.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a valve needle structure that can be quickly disassembled. Background Technology

[0002] Valves, as key components in fluid transport systems, are widely used in many fields such as industry, construction, and energy. They act like "switches" in pipeline systems, controlling the flow direction of fluids, regulating flow rates, and maintaining stable system pressure. From large-scale production equipment in factories to water and electricity facilities in homes, valves play a vital role in ensuring the safe and efficient operation of various fluid transport processes, making them an indispensable basic component of modern production and daily life.

[0003] Inside a valve, the valve needle is one of the core components. The valve needle precisely controls the opening and closing of the fluid passage, achieving fine-tuning of the flow rate and directly affecting the valve's performance. A common valve needle structure consists of the valve needle body, valve seat, and spring. The valve needle body is responsible for blocking or opening the fluid passage, the valve seat provides sealing support for the valve needle, and the spring helps the valve needle return to its original position. During disassembly, the system pressure is generally released first, then the fixing components are removed one by one. The valve needle and related components are carefully removed, and the entire process must be handled with care to avoid damaging the components and affecting the valve's performance.

[0004] In existing valve technology, valve needle disassembly and assembly face many challenges. The connection between the lower valve needle and the upper valve stem is cumbersome. When repairing or replacing the valve needle, a lot of time is spent on the complex disassembly process, which is difficult to operate, labor-intensive, and inefficient. Moreover, conventional connection structures are prone to loosening, resulting in poor stability of the valve needle during operation. Not only does it frequently loosen and fall off, but the abnormal friction caused by this also accelerates component wear, leading to serious mechanical damage and greatly affecting the normal operation of the valve. Therefore, a valve needle structure that can be quickly disassembled is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a valve needle structure that can be quickly disassembled, aiming to improve the problems of difficult valve needle disassembly and assembly and unstable connection in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The valve needle structure that can be quickly disassembled includes an upper valve stem, the bottom of which is fixedly connected to an assembly gripper, the inner side of which is slidably connected to a quick-release engagement mechanism, and the inner side of which is slidably connected to a locking fastening mechanism.

[0008] The quick-release locking mechanism includes a lower valve pin, an assembly head is fixedly connected to the top of the lower valve pin, the outer side of the assembly head is slidably connected to the inner side of the two assembly jaws, a disassembly and unlocking component is slidably connected to the inner side of the assembly jaws, and a locking and fixing component is slidably connected to the inner side of the assembly head.

[0009] The disassembly and unlocking assembly includes a disassembly pressure plate, the outer side of which is slidably connected to the inner side of the assembly gripper, a disassembly push rod fixedly connected to the outer side of the disassembly pressure plate, a limit groove formed on the inner side of the assembly gripper, a return spring sleeved on the outer side of the disassembly push rod, and a limit ring fixedly connected to the outer side of the disassembly push rod.

[0010] As a further description of the above technical solution:

[0011] The locking and fastening mechanism includes a locking groove that extends through the inner side of the assembly head and is also formed on the inner side of the assembly jaws.

[0012] As a further description of the above technical solution:

[0013] The locking and fixing assembly includes a locking protrusion, the outer side of which is slidably connected to the inner side of the assembly head, a locking spring is fixedly connected to the outer side of the locking protrusion, the other end of which is fixedly connected to the inner side of the assembly head, and the disassembly pressure plate is in contact with the locking protrusion.

[0014] As a further description of the above technical solution:

[0015] The outer side of the limiting ring is slidably connected to the inner side of the limiting groove of the assembly gripper, one end of the return spring is fixedly connected to the outer side of the limiting ring, and the other end of the return spring is fixedly connected to the inner side of the limiting groove of the assembly gripper.

[0016] As a further description of the above technical solution:

[0017] The outer side of the disassembly push rod is slidably connected to the inner side of the assembly gripper, and a disassembly button is fixedly connected to the end of the disassembly push rod away from the disassembly pressure plate. The outer side of the disassembly button is slidably connected to the inner side of the assembly gripper.

[0018] As a further description of the above technical solution:

[0019] The upper valve stem has an assembly opening and closing groove on its inner side, and the bottom of the lower valve needle is fixedly connected to a conical valve core.

[0020] As a further description of the above technical solution:

[0021] A locking rod is slidably connected to the inner side of the locking groove. One end of the locking rod is fixedly connected to an anti-slip locking wheel, and the other end of the locking rod is fixedly connected to multiple locking protrusions.

[0022] As a further description of the above technical solution:

[0023] The inner side of the assembly gripper is provided with a disc-shaped locking groove, and a locking protrusion is rotatably connected to the inner side of the disc-shaped locking groove. The disc-shaped locking groove is connected to the locking slide groove.

[0024] This utility model has the following beneficial effects:

[0025] 1. In this utility model, the quick-release locking mechanism drives the disassembly push rod and pressure plate through the disassembly button, so that the locking protrusion overcomes the spring force and retracts, realizing the separation of the lower valve needle from the upper valve stem; during installation, the locking protrusion is locked into the claw groove under the action of the spring, thereby realizing the effect of quick disassembly and assembly of the lower valve needle, which not only greatly saves the time for maintenance and replacement of valve needles and improves work efficiency, but also reduces the difficulty of operation and labor costs. At the same time, its tight locking design effectively ensures the connection stability and ensures the normal operation of the valve.

[0026] 2. In this utility model, the locking and fastening mechanism drives the locking rod and locking protrusion to work by rotating the anti-slip locking wheel. During installation, after sliding into the locking rod, the anti-slip locking wheel is rotated to make the locking protrusion engage with the disc-shaped locking groove. During disassembly, the operation is reversed, thereby achieving a firm locking effect on the assembly jaws. This effectively prevents the lower valve needle from loosening and falling off during operation, greatly improves the stability of the valve needle connection, reduces abnormal friction and mechanical wear caused by loosening, reduces the wear rate of components, and ensures reliable valve operation. Attached Figure Description

[0027] Figure 1 This is a three-dimensional schematic diagram of the valve needle structure that can be quickly disassembled according to this utility model;

[0028] Figure 2 This is a schematic diagram of the assembly head of the valve needle structure that can be quickly disassembled according to this utility model;

[0029] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0030] Figure 4 This is a schematic diagram of the disassembly button of the valve needle structure that can be quickly disassembled according to this utility model;

[0031] Figure 5 for Figure 4 Enlarged view of point B in the middle;

[0032] Figure 6This is a schematic diagram of the locking groove of the valve needle structure that can be quickly disassembled according to this utility model.

[0033] Legend:

[0034] 1. Upper valve stem; 2. Assembly gripper; 3. Assembly opening and closing groove; 4. Assembly head; 5. Lower valve needle; 6. Conical valve core; 7. Engaging spring; 8. Engaging protrusion; 9. Disassembly button; 10. Disassembly push rod; 11. Disassembly pressure plate; 12. Limit ring; 13. Return spring; 14. Disc-shaped locking groove; 15. Locking rotating rod; 16. Locking protrusion; 17. Anti-slip locking wheel; 18. Locking slide groove. Detailed Implementation

[0035] 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.

[0036] Reference Figures 1 to 3 The present invention provides an embodiment of a valve needle structure that can be quickly disassembled, including an upper valve stem 1. The upper valve stem 1 serves as a part connected to other driving components of the valve. Its top has a suitable thread and connection interface for stable connection with an external driving device such as an actuator to transmit power. An assembly claw 2 is fixedly connected to the bottom of the upper valve stem 1. The assembly claw 2 is openable and can clamp and fix the assembly head 4. By opening an assembly opening and closing groove 3, the outward expansion of the assembly claw 2 is effectively increased. When the assembly head 4 is inserted, the assembly claw 2 can elastically deform within a certain range. After outward expansion, it clamps the assembly head 4 by its own elastic restoring force. A quick-release locking mechanism is slidably connected to the inner side of the assembly claw 2, and a locking fastening mechanism is slidably connected to the inner side of the assembly claw 2.

[0037] The quick-release locking mechanism includes a lower valve needle 5, which is the core component that directly participates in the valve opening and closing control. The lower valve needle 5 precisely controls the valve opening and closing through the conical valve core 6 to ensure the flow of fluid medium and flow regulation. The top of the lower valve needle 5 is fixedly connected to an assembly head 4. The assembly head 4 cooperates with the assembly jaws 2 to realize the quick and stable connection between the lower valve needle 5 and the upper valve stem 1. The outer side of the assembly head 4 is slidably connected to the inner side of the two assembly jaws 2. The inner side of the assembly jaws 2 is slidably connected to a disassembly and unlocking component. The inner side of the assembly head 4 is slidably connected to a locking and fixing component.

[0038] The disassembly and unlocking assembly includes a disassembly pressure plate 11. When pushed by an external force, the disassembly pressure plate 11 presses and engages the protrusion 8, which helps to quickly disassemble the lower valve needle 5. The outer side of the disassembly pressure plate 11 is slidably connected to the inner side of the assembly gripper 2. A disassembly push rod 10 is fixedly connected to the outer side of the disassembly pressure plate 11. The disassembly push rod 10 transmits the pushing force of the disassembly button 9, drives the disassembly pressure plate 11, and realizes the disassembly of the lower valve needle 5. A limit groove is opened on the inner side of the assembly gripper 2. A return spring 13 is sleeved on the outer side of the disassembly push rod 10. After the disassembly action is completed, the return spring 13 automatically pushes the disassembly push rod 10 and the pressure plate 11 to return to their original positions. A limit ring 12 is fixedly connected to the outer side of the disassembly push rod 10. The limit ring 12 slides in the limit groove of the assembly gripper 2 to precisely limit the movement range of the disassembly push rod 10.

[0039] The locking and fixing assembly includes a locking protrusion 8, which is ejected by a locking spring 7 and securely locked into the assembly jaw 2 to ensure a tight connection of the valve needle. The outer side of the locking protrusion 8 is slidably connected to the inner side of the assembly head 4. The locking spring 7 is fixedly connected to the outer side of the locking protrusion 8. The locking spring 7 provides elastic force to the locking protrusion 8, so that it is tightly locked into the assembly jaw 2 to ensure a stable connection. The other end of the locking spring 7 is fixedly connected to the inner side of the assembly head 4. The disassembly pressure plate 11 is in contact with the locking protrusion 8.

[0040] The outer side of the limiting ring 12 is slidably connected to the inner side of the limiting groove of the assembly gripper 2. One end of the return spring 13 is fixedly connected to the outer side of the limiting ring 12, and the other end of the return spring 13 is fixedly connected to the inner side of the limiting groove of the assembly gripper 2.

[0041] The outer side of the disassembly push rod 10 is slidably connected to the inner side of the assembly gripper 2. The end of the disassembly push rod 10 away from the disassembly pressure plate 11 is fixedly connected to the disassembly button 9. The disassembly button 9 serves as an operating component, making it convenient for the user to apply force and start the quick disassembly process of the lower valve needle. The outer side of the disassembly button 9 is slidably connected to the inner side of the assembly gripper 2.

[0042] The inner side of the upper valve stem 1 is provided with an assembly opening and closing groove 3. The assembly opening and closing groove 3 allows the assembly gripper 2 to expand outward elastically and open and close slightly, which facilitates the connection of the assembly head 4 and improves the connection stability. The bottom of the lower valve needle 5 is fixedly connected with a conical valve core 6. The conical valve core 6 moves with the lower valve needle 5 and accurately controls the valve fluid flow and flow rate by adapting the conical surface to the valve seat.

[0043] Reference Figures 4 to 6 The locking and fastening mechanism includes a locking groove 18, which provides a sliding track for the locking rotating rod 15 and the locking protrusion 16 to realize the locking of the assembly gripper. The locking groove 18 passes through the inner side of the assembly head 4 and is also opened on the inner side of the assembly gripper 2.

[0044] A locking rod 15 is slidably connected to the inner side of the locking groove 18. The locking rod 15 is driven by the anti-slip locking wheel 17, which drives the locking protrusion 16 to rotate and lock the assembly gripper 2. One end of the locking rod 15 is fixedly connected to the anti-slip locking wheel 17. The anti-slip locking wheel 17 is easy to operate manually and with tools due to its anti-slip surface design. It drives the locking rod 15 to lock the valve needle. The other end of the locking rod 15 is fixedly connected to multiple locking protrusions 16. The locking protrusions 16 rotate with the locking rod 15 and are inserted into the disc-shaped locking groove 14 to reinforce the locking of the assembly gripper 2.

[0045] The inner side of the assembly gripper 2 is provided with a disc-shaped locking groove 14. The disc-shaped locking groove 14 cooperates with the locking protrusion 16 to limit the position at a specific angle and stabilize the locking state of the assembly gripper 2. The inner side of the disc-shaped locking groove 14 is rotatably connected to the locking protrusion 16. The locking protrusion 16 is driven by the locking rotating rod 15 to accurately engage with the disc-shaped groove, tighten the assembly gripper and prevent the valve needle from loosening. The disc-shaped locking groove 14 is connected to the locking slide groove 18.

[0046] Working principle: When it is necessary to remove the lower valve needle 5, first rotate the anti-slip locking wheel 17, so that the locking rod 15 drives the locking protrusion 16 to rotate. When the locking protrusion 16 rotates to the vertical position, the locking rod 15 can be pulled out along the locking groove 18. The locking protrusion 16 is also pulled out along with the locking rod 15, thus completing the unlocking of the assembly gripper 2. Then, pinch the disassembly button 9. The disassembly button 9 drives the disassembly push rod 10 to press inward. The disassembly push rod 10 overcomes the elastic force of the return spring 13 and pushes the disassembly pressure plate 11 to slide inward. The disassembly pressure plate 11 contacts and pushes the locking protrusion 8, so that the locking protrusion 8 overcomes the support force of the locking spring 7 and retracts inward. When the locking protrusion 8 is out of the range of the assembly gripper 2, the locking is released. Then, pull the lower valve needle 5 laterally. The lower valve needle 5 drives the assembly head 4 to gradually get out of the clamping and fixing of the assembly gripper 2. Thus, a quick disassembly of the lower valve needle 5 is completed.

[0047] When quick installation of the lower valve needle 5 is required, first pinch the engaging protrusions 8 on both sides of the assembly head 4 and press the engaging protrusions 8 into the inside of the assembly head 4. Then, insert the assembly head 4 into the assembly jaw 2. The assembly jaw 2 initially fixes the assembly head 4. When the assembly head 4 slides to the appropriate position, the engaging protrusions 8 extend under the elastic force of the engaging spring 7 and engage into the groove of the assembly jaw 2. This completes the further engagement and fixation. After fixation is completed, to prevent the lower valve needle 5 from loosening and falling off during operation, the locking rotor with locking protrusion 16 is then engaged. The lever 15 is rotated to the vertical position and then slides into the locking groove 18. When it slides to the limit distance, the anti-slip locking wheel 17 is rotated. The anti-slip locking wheel 17 drives the locking lever 15 to rotate, so that the locking protrusion 16 rotates in the disc-shaped locking groove 14. When the locking protrusion 16 rotates to the horizontal position, it is limited and locked by the disc-shaped locking groove 14 and cannot be pulled out from the locking groove 18. At this time, the assembly claw 2 further clamps and locks under the joint action of the locking protrusion 16 and the anti-slip locking wheel 17, thus completing the quick installation and firm connection of the entire lower valve needle 5.

[0048] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A valve needle structure capable of quick disassembly, comprising an upper valve stem (1), characterized in that: The bottom of the upper valve stem (1) is fixedly connected to an assembly gripper (2), the inner side of the assembly gripper (2) is slidably connected to a quick-release engagement mechanism, and the inner side of the assembly gripper (2) is slidably connected to a locking fastening mechanism. The quick-release locking mechanism includes a lower valve pin (5), the top of which is fixedly connected to an assembly head (4), the outer side of which is slidably connected to the inner side of two assembly claws (2), the inner side of which is slidably connected to a disassembly and unlocking component, and the inner side of which is slidably connected to a locking and fixing component. The disassembly and unlocking assembly includes a disassembly pressure plate (11), the outer side of which is slidably connected to the inner side of the assembly gripper (2), a disassembly push rod (10) is fixedly connected to the outer side of the disassembly pressure plate (11), a limit groove is provided on the inner side of the assembly gripper (2), a reset spring (13) is sleeved on the outer side of the disassembly push rod (10), and a limit ring (12) is fixedly connected to the outer side of the disassembly push rod (10).

2. The valve needle structure capable of quick disassembly according to claim 1, characterized in that: The locking and fastening mechanism includes a locking groove (18) that extends through the inner side of the assembly head (4) and is also formed on the inner side of the assembly jaw (2).

3. The valve needle structure capable of quick disassembly according to claim 1, characterized in that: The locking and fixing assembly includes a locking protrusion (8), the outer side of which is slidably connected to the inner side of the assembly head (4), and a locking spring (7) is fixedly connected to the outer side of the locking protrusion (8). The other end of the locking spring (7) is fixedly connected to the inner side of the assembly head (4). The disassembly pressure plate (11) is in contact with the locking protrusion (8).

4. The valve needle structure capable of quick disassembly according to claim 1, characterized in that: The outer side of the limiting ring (12) is slidably connected to the inner side of the limiting groove of the assembly gripper (2). One end of the reset spring (13) is fixedly connected to the outer side of the limiting ring (12), and the other end of the reset spring (13) is fixedly connected to the inner side of the limiting groove of the assembly gripper (2).

5. The valve needle structure capable of quick disassembly according to claim 1, characterized in that: The outer side of the disassembly push rod (10) is slidably connected to the inner side of the assembly gripper (2). The end of the disassembly push rod (10) away from the disassembly pressure plate (11) is fixedly connected to a disassembly button (9). The outer side of the disassembly button (9) is slidably connected to the inner side of the assembly gripper (2).

6. The valve needle structure capable of quick disassembly according to claim 1, characterized in that: The upper valve stem (1) has an assembly opening and closing groove (3) on its inner side, and the bottom of the lower valve needle (5) is fixedly connected to a conical valve core (6).

7. The valve needle structure capable of quick disassembly according to claim 2, characterized in that: The inner side of the locking groove (18) is slidably connected to a locking rod (15), one end of the locking rod (15) is fixedly connected to an anti-slip locking wheel (17), and the other end of the locking rod (15) is fixedly connected to a plurality of locking protrusions (16).

8. The valve needle structure capable of quick disassembly according to claim 2, characterized in that: The inner side of the assembly gripper (2) is provided with a disc-shaped locking groove (14), and a locking protrusion (16) is rotatably connected to the inner side of the disc-shaped locking groove (14). The disc-shaped locking groove (14) is connected to the locking slide groove (18).

Images