An adjustable needle valve assembly

Abstract

The utility model relates to needle valve technical field especially for adjustable needle valve couple spare, including valve body and valve seat, the upper end fixed establishment of valve body is equipped with valve seat, the inside fixed establishment of valve seat is equipped with sealing sleeve, the inside sliding of sealing sleeve is equipped with valve stem, the both sides of valve body are equipped with outlet valve mouth and inlet valve mouth, the both sides of valve body inside are equipped with with outlet valve mouth and inlet valve mouth intercommunication's discharge channel and access channel, the discharge channel and access channel junction are equipped with valve chamber, through setting up multiple different aperture's access hole on the adjusting plug surface, greatly enriched the means of flow regulation, compared with the traditional needle valve only relying on the valve plug and valve seat gap fine tuning flow mode, the design can realize the wide range regulation from the minimum flow to the larger flow, and the access hole of different aperture provides multistage selection for flow, so that needle valve can accurately match the required flow when facing different working conditions, and the adaptability and flexibility of needle valve in flow regulation are improved obviously.

Description

Technical Field

[0001] This utility model relates to the field of needle valve technology, specifically to an adjustable needle valve assembly. Background Technology

[0002] Needle valves, as a common fluid control component, play a crucial role in numerous fields. They are widely used in industries such as petrochemicals, machinery manufacturing, automotive, and aerospace for precise control of fluid flow and pressure. With their compact structure, excellent sealing performance, and high adjustment accuracy, needle valves can adapt to various complex operating conditions, making them an indispensable key component in fluid control systems.

[0003] Despite the numerous advantages of needle valves, traditional needle valves also have some limitations in practical applications, especially in flow regulation. Traditional needle valves typically have small valve plugs, and their flow regulation relies primarily on changes in the gap between the valve plug and the valve seat. This design limits the range and accuracy of flow regulation to some extent. Specifically, this is reflected in the following aspects:

[0004] Because of the small size of the valve plug, the range of variation in the gap between the valve plug and the valve seat is relatively limited. This results in a relatively narrow flow rate variation range for traditional needle valves when regulating flow, making it difficult to meet the needs of some operating conditions requiring a wider flow rate regulation range. For example, in some fine chemical production processes, it is necessary to precisely control the fluid flow rate over a large range, and traditional needle valves often fail to achieve the desired regulation effect.

[0005] Therefore, an adjustable needle valve assembly is needed to improve the above-mentioned problems. Utility Model Content

[0006] The purpose of this invention is to provide an adjustable needle valve assembly to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An adjustable needle valve assembly includes a valve body and a valve seat. The valve seat is fixedly provided at the upper end of the valve body. A sealing sleeve is fixedly provided inside the valve seat. A valve stem is slidably provided inside the sealing sleeve. An outlet and an inlet are provided on both sides of the valve body. A discharge channel and an inlet channel communicating with the outlet and inlet are provided on both sides inside the valve body. A valve chamber is provided at the junction of the discharge channel and the inlet channel.

[0009] As a preferred embodiment of this utility model, the valve seat is provided with a threaded groove inside, and a threaded block is threadedly connected inside the threaded groove, with a rotating rod fixed inside the threaded block.

[0010] As a preferred embodiment of this utility model, a throttle handle is fixedly provided at the upper end of the throttle rod, and a universal ball sleeve is fixedly provided at the lower end of the throttle rod.

[0011] As a preferred embodiment of this utility model, the valve stem includes a universal ball head, a sliding connecting rod, a valve plug, and an adjusting plug, with the universal ball head rotatably disposed inside the universal ball sleeve.

[0012] As a preferred embodiment of this utility model, the universal ball head and the valve plug are respectively fixedly disposed at both ends of the sliding connecting rod, and the lower end of the valve plug is fixed to the adjusting plug.

[0013] As a preferred embodiment of this utility model, the adjusting plug is adapted to slide inside the discharge channel, and the surface of the adjusting plug is provided with a number of inlet holes of different diameters from top to bottom, and the lower end of the interior of the adjusting plug is provided with a discharge hole communicating with the inlet holes.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model greatly enriches the means of flow regulation by setting multiple inlet holes of different diameters on the surface of the regulating plug. Compared with the traditional needle valve that relies solely on the gap between the valve plug and the valve seat to finely adjust the flow, this design can achieve a wide range of adjustment from extremely small flow to large flow. The inlet holes of different diameters provide multiple levels of flow selection, enabling the needle valve to accurately match the required flow when facing different working conditions, significantly improving the adaptability and flexibility of the needle valve in flow regulation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model from one side;

[0017] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention from the other side;

[0018] Figure 3 This is a schematic diagram of the overall side structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the overall internal structure of this utility model;

[0020] Figure 5 This is a schematic diagram of the valve stem structure of this utility model;

[0021] Figure 6 This is a three-dimensional structural diagram of the valve stem of this utility model;

[0022] Figure 7 This is a top view schematic diagram of the overall structure of this utility model.

[0023] In the diagram: 1. Thruster; 2. Rotary rod; 3. Threaded block; 4. Threaded groove; 5. Universal ball sleeve; 6. Sealing sleeve; 7. Valve stem; 8. Valve outlet; 9. Discharge channel; 10. Valve body; 11. Inlet channel; 12. Valve inlet; 13. Valve seat; 14. Universal ball head; 15. Sliding connecting rod; 16. Valve plug; 17. Adjusting plug. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0025] To facilitate understanding of this utility model, a more comprehensive description of it will be provided below with reference to relevant embodiments. Several embodiments of this utility model are given. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0026] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Please see Figure 1-7 This utility model provides a technical solution:

[0029] An adjustable needle valve assembly includes a valve body 10 and a valve seat 13. The valve seat 13 is fixedly mounted on the upper end of the valve body 10. A sealing sleeve 6 is fixedly mounted inside the valve seat 13. A valve stem 7 is slidably mounted inside the sealing sleeve 6. The valve body 10 has an outlet 8 and an inlet 12 on both sides. The valve body 10 has a discharge channel 9 and an inlet channel 11 on both sides inside, which communicate with the outlet 8 and the inlet 12. A valve chamber is provided at the junction of the discharge channel 9 and the inlet channel 11. When the flow rate needs to be adjusted, the operator drives the rotating rod 2 to rotate by turning the handle 1. Since the lower end of the rotating rod 2 is fixedly mounted with a universal ball sleeve 5, and the universal ball head 14 of the valve stem 7 is rotatably mounted inside the universal ball sleeve 5, the rotation of the rotating rod 2 will cause the valve stem 7 to slide up and down inside the sealing sleeve 6.

[0030] As an example of this utility model, the valve seat 13 is provided with a threaded groove 4 inside, and a threaded block 3 is provided inside the threaded groove 4. A rotating rod 2 is fixedly provided inside the threaded block 3.

[0031] As an example of this utility model, a handle 1 is fixedly provided at the upper end of the rotating rod 2, and a universal ball sleeve 5 is fixedly provided at the lower end of the rotating rod 2. By precisely controlling the rotation angle of the handle 1, the adjusting plug 17 can be moved to a suitable position so that the inlet hole of a specific diameter can be connected with the valve chamber, thereby achieving precise adjustment of the flow rate. This adjustment method enables the needle valve to be flexibly adjusted within a wide flow range to meet the flow requirements under different working conditions.

[0032] Once the regulating plug 17 is moved to the appropriate position and the required flow regulation is achieved, the needle valve enters a stable working state; the fluid enters from the inlet port 12, flows into the valve chamber through the inlet channel 11, then enters the outlet channel 9 through the inlet hole on the regulating plug 17, and finally flows out from the outlet port 8; throughout the entire working process, the position of the regulating plug 17 remains relatively stable to maintain a stable flow output.

[0033] As an example of this utility model, the valve stem 7 includes a universal ball head 14, a sliding connecting rod 15, a valve plug 16, and an adjusting plug 17, with the universal ball head 14 rotatably disposed inside the universal ball sleeve 5.

[0034] As an example of this utility model, the universal ball joint 14 and the valve plug 16 are respectively fixedly disposed at both ends of the sliding connecting rod 15, and the lower end of the valve plug 16 is fixed to the adjusting plug 17.

[0035] As an example of this utility model, the regulating plug 17 is adapted to slide inside the discharge channel 9. The surface of the regulating plug 17 has several inlet holes of different diameters arranged sequentially from top to bottom. The lower end of the regulating plug 17 has a discharge hole communicating with the inlet holes. As the valve stem 7 slides up and down, the regulating plug 17 moves up and down accordingly within the discharge channel 9. The surface of the regulating plug 17 has several inlet holes of different diameters arranged sequentially from top to bottom. These inlet holes are connected to the discharge hole at the lower end of the regulating plug 17. When the regulating plug 17 moves upward, the inlet hole at the lower end of the regulating plug 17 gradually connects with the valve chamber between the inlet channel 11 and the discharge channel 9. Due to the different diameters of the inlet holes, different flow rates are generated when fluid enters the discharge channel 9 through inlet holes of different diameters. Inlet holes with larger diameters allow more fluid to pass through, thus achieving a larger flow rate; while inlet holes with smaller diameters limit the amount of fluid passing through, reducing the flow rate.

[0036] Working principle: When it is needed to adjust the flow rate, the operator drives the rotating rod 2 to rotate by turning the handle 1. Since the lower end of the rotating rod 2 is fixedly provided with a universal ball sleeve 5, and the universal ball head 14 of the valve stem 7 is rotatably set inside the universal ball sleeve 5, the rotation of the rotating rod 2 will drive the valve stem 7 to slide up and down inside the sealing sleeve 6.

[0037] As the valve stem 7 slides up and down, the regulating plug 17 moves up and down in the discharge channel 9 accordingly; the surface of the regulating plug 17 is provided with several inlet holes of different diameters from top to bottom, and these inlet holes are connected to the discharge hole at the lower end of the regulating plug 17.

[0038] When the regulating plug 17 moves upward, the inlet hole at the lower end of the regulating plug 17 gradually connects with the valve chamber between the inlet channel 11 and the outlet channel 9. Due to the different diameters of the inlet holes, different flow rates will be generated when the fluid enters the outlet channel 9 through inlet holes of different diameters. The inlet hole with a larger diameter allows more fluid to pass through, thereby achieving a larger flow rate; while the inlet hole with a smaller diameter restricts the amount of fluid passing through, thus reducing the flow rate.

[0039] By precisely controlling the rotation angle of the throttle 1, the adjusting plug 17 can be moved to a suitable position, so that the inlet hole of a specific diameter is connected to the valve chamber, thereby achieving precise regulation of the flow rate; this adjustment method allows the needle valve to be flexibly adjusted within a wide flow range to meet the flow requirements under different working conditions.

[0040] Once the regulating plug 17 is moved to the appropriate position and the required flow regulation is achieved, the needle valve enters a stable working state; the fluid enters from the inlet port 12, flows into the valve chamber through the inlet channel 11, then enters the outlet channel 9 through the inlet hole on the regulating plug 17, and finally flows out from the outlet port 8; throughout the entire working process, the position of the regulating plug 17 remains relatively stable to maintain a stable flow output.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An adjustable needle valve assembly, comprising a valve body (10) and a valve seat (13), characterized in that: A valve seat (13) is fixedly provided at the upper end of the valve body (10). A sealing sleeve (6) is fixedly provided inside the valve seat (13). A valve stem (7) is slidably provided inside the sealing sleeve (6). An outlet (8) and an inlet (12) are provided on both sides of the valve body (10). A discharge channel (9) and an inlet channel (11) communicating with the outlet (8) and the inlet (12) are provided on both sides inside the valve body (10). A valve chamber is provided at the junction of the discharge channel (9) and the inlet channel (11).

2. The adjustable needle valve assembly according to claim 1, characterized in that: The valve seat (13) has a threaded groove (4) inside, and a threaded block (3) is threadedly connected inside the threaded groove (4). A rotating rod (2) is fixedly installed inside the threaded block (3).

3. An adjustable needle valve assembly according to claim 2, characterized in that: The upper end of the rotating rod (2) is fixedly provided with a throttle (1), and the lower end of the rotating rod (2) is fixedly provided with a universal ball sleeve (5).

4. An adjustable needle valve assembly according to claim 3, characterized in that: The valve stem (7) includes a universal ball head (14), a sliding connecting rod (15), a valve plug (16), and an adjusting plug (17). The universal ball head (14) is rotatably disposed inside the universal ball sleeve (5).

5. An adjustable needle valve assembly according to claim 4, characterized in that: The universal ball joint (14) and the valve plug (16) are respectively fixedly installed at both ends of the sliding connecting rod (15), and the lower end of the valve plug (16) is fixed to the adjusting plug (17).

6. An adjustable needle valve assembly according to claim 5, characterized in that: The regulating plug (17) is adapted to slide inside the discharge channel (9). The surface of the regulating plug (17) is provided with several inlet holes of different diameters from top to bottom. The lower end of the regulating plug (17) is provided with a discharge hole that communicates with the inlet holes.

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