A bar needle valve

Abstract

The application provides a bar needle valve which is composed of a valve seat, a valve body and a valve rod. The valve seat is provided with a movable slot. The valve body is detachably mounted on the valve seat and internally provided with a movable hole which is communicated with the movable slot. The valve rod is rotatably arranged in the movable hole. The valve core is detachably mounted on the valve rod and extends into the movable slot. When the valve core is replaced, the valve body is only needed to be detached from the valve seat, so that the valve core can be easily replaced without large-scale disassembly. When the valve core is replaced, the valve body is detached from the valve seat, the valve rod is slid out of the movable hole, so that the valve rod and the valve body are separated, and the valve rod and the valve core are replaced.

Description

Technical Field

[0001] This application relates to the field of needle valves, and more particularly to a bar-type needle valve. Background Technology

[0002] In practical use, the valve core and stem of a needle valve, as core components, are frequently subjected to various forces such as fluid scouring, pressure changes, and mechanical friction, making them prone to wear, corrosion, and even breakage. Damage to the valve core or stem directly affects the sealing performance of the needle valve. Once the sealing performance deteriorates, fluid leakage may occur, leading not only to resource waste and increased production costs, but also potential environmental pollution and even safety accidents, severely impacting normal production operations.

[0003] Therefore, there is a need for a bar-type needle valve that allows for easy and convenient replacement of the valve stem and valve core. Utility Model Content

[0004] In view of this, it is necessary to provide a bar-type needle valve that facilitates easy replacement of the valve stem and valve core in order to solve the above problems.

[0005] An embodiment of this application provides a bar stock needle valve, comprising:

[0006] The valve seat has a movable groove;

[0007] The valve body is detachably mounted on the movable groove, and the valve body has an axially penetrating movable hole inside the valve body, which communicates with the movable groove.

[0008] The valve stem includes a valve stem body and a valve core. The valve stem is rotatably disposed within the movable hole. The valve core is detachably disposed on the valve stem. The valve stem extends out of the movable hole along the diameter direction of the movable hole so that the valve core is disposed within the movable groove.

[0009] In at least one embodiment of this application, the valve body has a first connecting portion and the movable groove has a second connecting portion. The first connecting portion is disposed on the outer peripheral surface of the valve body, and the second connecting portion is disposed in the movable groove. The first connecting portion and the second connecting portion are fitted together to connect the valve body and the valve seat.

[0010] In at least one embodiment of this application, both the first connecting portion and the second connecting portion are threaded structures.

[0011] In at least one embodiment of this application, the valve body includes: a first base and a second base, the first base being disposed on the movable groove, the second base being connected to the first base, and the first connecting portion being disposed on the outer surface of the first base;

[0012] The first base has a third connecting portion, which is disposed within the movable hole;

[0013] The second substrate has a fourth connecting portion, which is disposed on the outer surface of the second substrate. The second substrate is sleeved inside the first substrate, and the third connecting portion is fitted with the fourth connecting portion.

[0014] In at least one embodiment of this application, the valve stem includes a first movable rod and a second movable rod, the first movable rod and the second movable rod are connected, the first movable rod slides in the second base, and the second movable rod slides in the first base.

[0015] In at least one embodiment of this application, the second base further has a fifth connecting portion disposed within the movable hole, and the first movable rod has a sixth connecting portion, wherein the fifth connecting portion is rotatably connected to the sixth connecting portion.

[0016] In at least one embodiment of this application, the outer peripheral surface of the valve body has a handle rotating part, the handle mounting part is integrally connected to the valve body.

[0017] In at least one embodiment of this application, the grip rotating part has a prismatic structure.

[0018] In at least one embodiment of this application, the valve stem further includes a rotating member disposed at the end of the valve stem away from the valve core.

[0019] In at least one embodiment of this application, the valve seat has a plugging port, which is disposed opposite to the movable hole so that the valve stem can extend into the plugging port;

[0020] The valve seat also has an inlet pipe and an outlet pipe, the inlet pipe being connected in sequence to the plug, the movable groove and the outlet pipe.

[0021] The aforementioned bar-type needle valve comprises a valve seat, a valve body, and a valve stem. The valve seat has a movable groove, and the valve body is detachably mounted on it, with an internal movable hole communicating with the movable groove. The valve stem rotatably resides within the movable hole, and the valve core is detachably mounted on the valve stem and extends into the movable groove. When replacing the valve core, simply remove the valve body from the valve seat to easily replace the valve core, eliminating the need for extensive disassembly. Alternatively, when replacing the valve core, remove the valve body from the valve seat, and the valve stem slides out from the movable rod, thus separating the valve stem from the valve body, allowing for the replacement of both the valve stem and valve core. This simplifies the replacement process, reduces difficulty and cost, minimizes damage to the valve and pipeline, and extends their service life. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a bar needle valve in an embodiment of this application.

[0023] Figure 2 A cross-sectional view of a bar-type needle valve.

[0024] Explanation of main component symbols

[0025] 100. A needle valve for bar stock; 10. Valve seat; 11. Movable groove; 111. Second connecting part; 12. Plug port; 13. Inlet pipe; 14. Outlet pipe; 20. Valve stem; 21. First movable rod; 211. Sixth connecting part; 22. Second movable rod; 23. Rotating component; 30. Valve body; 31. Movable hole; 32. First base; 321. First connecting part; 322. Third connecting part; 33. Second base; 331. Fourth connecting part; 332. Fifth connecting part; 34. Handle rotating part; 40. Valve core. Detailed Implementation

[0026] The embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0027] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or may also have an intervening component. When a component is considered to be "placed" on another component, it can be directly placed on the other component or may also have an intervening component. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "back," and similar expressions used in this article are for illustrative purposes only.

[0028] Embodiments of this application provide a bar stock needle valve, comprising:

[0029] The valve seat has a movable groove;

[0030] The valve body is detachably mounted on the movable groove, and the valve body has an axially penetrating movable hole inside the valve body, which communicates with the movable groove.

[0031] The valve stem includes a valve stem body and a valve core. The valve stem is rotatably disposed within the movable hole. The valve core is detachably disposed on the valve stem. The valve stem extends out of the movable hole along the diameter direction of the movable hole so that the valve core is disposed within the movable groove.

[0032] The aforementioned bar-type needle valve comprises a valve seat, a valve body, and a valve stem. The valve seat has a movable groove, and the valve body is detachably mounted on it, with an internal movable hole communicating with the movable groove. The valve stem rotatably resides within the movable hole, and the valve core is detachably mounted on the valve stem and extends into the movable groove. When replacing the valve core, simply remove the valve body from the valve seat to easily replace the valve core, eliminating the need for extensive disassembly. Alternatively, when replacing the valve core, remove the valve body from the valve seat, and the valve stem slides out from the movable rod, thus separating the valve stem from the valve body, allowing for the replacement of both the valve stem and valve core. This simplifies the replacement process, reduces difficulty and cost, minimizes damage to the valve and pipeline, and extends their service life.

[0033] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0034] according to Figures 1-2 This application provides a bar needle valve 100, which includes a valve seat 10, a valve stem 20 and a valve body 30.

[0035] The valve seat 10 has a movable groove 11; the valve body 30 is detachably mounted on the movable groove 11, and the valve body 30 has an axially penetrating movable hole 31 inside the valve body 30, the movable hole 31 communicating with the movable groove 11; the valve stem 20 includes a valve stem 20 body and a valve core 40, the valve stem 20 is rotatably mounted in the movable hole 31, and the valve core 40 is detachably mounted on the valve stem 20, and the valve stem 20 extends out of the movable hole 31 along the diameter direction of the movable hole 31 so that the valve core 40 is mounted in the movable groove 11.

[0036] Specifically, the movable groove 11 provides installation space for the valve body 30 and movement space for the valve core 40. The valve core 40 moves synchronously with the valve stem 20 within the movable groove 11 to adjust the opening of the fluid passage, thereby controlling the flow rate and pressure of the fluid. In this embodiment, the valve body 30 and the movable groove 11 are detachably connected via a threaded connection. This allows the valve body 30 to be easily removed from the movable groove 11 when the valve core 40 or valve stem 20 is damaged, enabling replacement or repair of the internal valve core 40 or valve stem 20 without replacing the entire needle valve.

[0037] Furthermore, the valve core 40 is disposed within the movable groove 11, and when the valve core 40 is on the valve stem 20, it is disposed within the valve body 30 along with the valve stem 20. One end of the valve stem 20 extends out of the movable hole 31, exposing the valve core 40 outside the valve body 30. After disassembling the valve body 30 and the valve seat 10, the valve core 40 is directly exposed. Therefore, when the valve core 40 is worn or damaged, it can be removed from the valve stem 20 for replacement without replacing the entire valve stem 20.

[0038] Furthermore, the movable hole 31 provides a channel for the installation and movement of the valve stem 20. The valve stem 20 rotates within the movable hole 31, driving the valve core 40 to move within the movable groove 11, thereby opening and closing the fluid passage and adjusting the opening degree. The rotation of the valve stem 20 within the movable hole 31 controls the valve core 40, thus adjusting the opening degree of the fluid passage.

[0039] Furthermore, after the valve core 40 is removed from the valve stem 20, the valve stem 20 can be removed from the movable hole 31 of the valve body 30. During the removal process, the operation should be slow and steady to avoid collision or scratching between the valve stem 20 and the inner wall of the movable hole 31, which could damage the surface of the valve stem 20 or the movable hole 31.

[0040] In one specific embodiment, the valve body 30 has a first connecting portion 321, and the movable groove 11 has a second connecting portion 111. The first connecting portion 321 is disposed on the outer peripheral surface of the valve body 30, and the second connecting portion 111 is disposed in the movable groove 11. The first connecting portion 321 and the second connecting portion 111 are fitted together to connect the valve body 30 and the valve seat 10.

[0041] Specifically, the first connecting part 321 is a specific structural part on the valve body 30 specifically designed to connect with the valve seat 10. It provides a crucial foundation for a reliable connection between the valve body 30 and the valve seat 10. Through its cooperation with the second connecting part 111, it ensures that the valve body 30 can be accurately and securely installed on the movable groove 11 of the valve seat 10. The second connecting part 111 is located within the movable groove 11 and cooperates with the first connecting part 321 of the valve body 30 to form the connection structure between the valve body 30 and the valve seat 10. By placing the first connecting part 321 on the outer circumferential surface of the valve body 30, the external space of the valve body 30 is fully utilized, facilitating its cooperation with the second connecting part 111 within the movable groove 11. The second connecting part 111, located within the movable groove 11, can directly contact and cooperate with the first connecting part 321 of the valve body 30, forming a stable connection.

[0042] In one specific embodiment, both the first connecting portion 321 and the second connecting portion 111 are threaded structures.

[0043] Specifically, the first connecting portion 321 on the outer circumferential surface of the valve body 30 is machined with external threads, the thread profile and pitch of which are perfectly matched with the internal threads of the second connecting portion 111 on the inner wall of the movable groove 11, forming a detachable mechanical connection. The first connecting portion 321 on the valve seat 10 and the second connecting portion 111 on the valve body 30 are connected by thread engagement, thereby connecting the valve body 30 and the valve seat 10. During the thread engagement process, the valve body 30 automatically aligns axially to ensure the coaxiality of the movable hole 31 and the movable groove 11, and to prevent uneven wear between the valve stem 20 and the hole wall.

[0044] In one specific embodiment, the valve body 30 includes: a first base 32 and a second base 33, the first base 32 being disposed on the movable groove 11, the second base 33 being connected to the first base 32, and a first connecting portion 321 being disposed on the outer surface of the first base 32; the first base 32 having a third connecting portion 322 being disposed within the movable hole 31; the second base 33 having a fourth connecting portion 331 being disposed on the outer surface of the second base 33, the second base 33 being sleeved within the first base 32, and the third connecting portion 322 and the fourth connecting portion 331 being fitted together.

[0045] Specifically, the first base 32 is a cylindrical sleeve structure with an external thread of a first connecting part 321 on its outer circumference, which forms a main connection with the internal thread of the movable groove 11 of the valve seat 10; the inner hole is machined with an internal thread of a third connecting part 322 for fitting with the second base 33. The second base 33 is a cylindrical structure with a fourth connecting part 331 on its outer surface, which is externally threaded and mates with the thread of the third connecting part 322 of the first base 32.

[0046] Furthermore, after aligning the first base 32 and the second base 33, the internal thread of the third connecting part 322 and the external thread of the fourth connecting part 331 are connected by thread, thereby separating or connecting the first base 32 and the second base 33.

[0047] In one specific embodiment, the valve stem 20 includes a first movable rod 21 and a second movable rod 22, the first movable rod 21 and the second movable rod 22 are connected, the first movable rod 21 slides within the second base 33, and the second movable rod 22 slides within the first base 32.

[0048] Specifically, the first movable rod 21 and the second movable rod 22 are an integral structure.

[0049] In one specific embodiment, the second base 33 further has a fifth connecting part 332, which is disposed in the movable hole 31, and the first movable rod 21 has a sixth connecting part 211, wherein the fifth connecting part 332 is rotatably connected to the sixth connecting part 211.

[0050] Specifically, the sixth connecting part 211 on the first movable rod 21 has an external thread structure, and the internal thread structure of the fifth connecting part 332 is threadedly engaged with the sixth thread structure. By rotating the valve rod 20, the thread structure on the sixth connecting part 211 enables the first movable rod 21 to achieve a reciprocating motion within the second base 33, which involves both rotation and axial sliding.

[0051] Furthermore, the second movable rod 22 moves back and forth within the movable hole 31 without friction, both rotating and sliding axially, thereby reducing the frictional force when the valve rod 20 rotates.

[0052] In one specific embodiment, the outer peripheral surface of the valve body 30 has a handle rotating part 34, the handle mounting part is integrally connected to the valve body 30, and the handle rotating part 34 is integrally connected to the valve body 30.

[0053] Furthermore, the grip rotation part 34 has a prismatic structure.

[0054] Furthermore, the grip rotating part 34 preferably adopts a hexagonal prism structure (distance between opposite sides 18-22mm), and is integrally formed with the valve body 30 body to ensure structural strength and avoid assembly errors. In specific implementation, all six facets of the grip rotating part 34 are machined with anti-slip textures, so that the operator can obtain sufficient friction when adjusting the valve body 30 and the valve seat 10, thereby making it easier and faster to separate or connect the valve body 30 and the valve seat 10.

[0055] In one specific embodiment, the valve stem 20 further includes a rotating member 23, which is located at the end of the valve stem 20 away from the valve core 40.

[0056] Specifically, the rotating component 23 can be a handwheel or a rotating rod, etc. The rotating component 23 can be detachable, forming an anti-rotation fit with the D-shaped shaft at the end of the valve stem 20 through the central D-shaped hole, and is fixed with a hexagonal set screw. By rotating the rotating component 23, the valve stem 20 is driven to rotate in the same direction.

[0057] In one specific embodiment, the valve seat 10 has a plugging port 12, which is disposed opposite to the movable hole 31 so that the valve stem 20 can extend into the plugging port 12; the valve seat 10 also has an inlet pipe 13 and an outlet pipe 14, the inlet pipe 13 being connected in sequence to the plugging port 12, the movable groove 11 and the outlet pipe 14.

[0058] Specifically, the blocking port 12 and the movable hole 31 are coaxially opposite to each other to form a straight channel. The valve core 40 is driven to move linearly by the valve stem 20, thereby blocking the blocking port 12 and shutting off the inlet pipe 13 and the outlet pipe 14.

[0059] Therefore, the aforementioned bar-type needle valve 100 comprises a valve seat 10, a valve body 30, and a valve stem 20. The valve seat 10 has a movable groove 11, the valve body 30 is detachably mounted on it and has a through movable hole 31 communicating with the movable groove 11, the valve stem 20 is rotatably disposed within the movable hole 31, and the valve core 40 is detachably mounted on the valve stem 20 and extends into the movable groove 11. When replacing the valve core 40, simply remove the valve body 30 from the valve seat 10 to easily replace the valve core 40 without extensive disassembly; when replacing the valve core 40, remove the valve body 30 from the valve seat 10, and the valve stem 20 slides out from the movable rod, thereby separating the valve stem 20 from the valve body 30, thus replacing the valve stem 20 and the valve core 40. This simplifies the replacement process, reduces difficulty and cost, minimizes damage to the valve and pipeline, and extends their service life.

[0060] The above description is merely an embodiment of this application. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this application, but these improvements all fall within the protection scope of this application.

Claims

1. A bar stock needle valve, characterized in that, include: The valve seat has a movable groove; The valve body is detachably mounted on the movable groove, and the valve body has an axially penetrating movable hole inside the valve body, which communicates with the movable groove. The valve stem includes a valve stem body and a valve core. The valve stem is rotatably disposed within the movable hole. The valve core is detachably disposed on the valve stem. The valve stem extends out of the movable hole along the diameter direction of the movable hole so that the valve core is disposed within the movable groove.

2. The bar stock needle valve according to claim 1, characterized in that, The valve body has a first connecting part, and the movable groove has a second connecting part. The first connecting part is disposed on the outer peripheral surface of the valve body, and the second connecting part is disposed in the movable groove. The first connecting part and the second connecting part are fitted together to connect the valve body and the valve seat.

3. A bar-type needle valve according to claim 2, characterized in that, Both the first connecting part and the second connecting part are threaded structures.

4. A bar-type needle valve according to claim 2, characterized in that, The valve body includes: a first base and a second base, the first base being disposed on the movable groove, the second base being connected to the first base, and the first connecting part being disposed on the outer surface of the first base; The first base has a third connecting portion, which is disposed within the movable hole; The second substrate has a fourth connecting portion, which is disposed on the outer surface of the second substrate. The second substrate is sleeved inside the first substrate, and the third connecting portion is fitted with the fourth connecting portion.

5. A bar-type needle valve according to claim 4, characterized in that, The valve stem includes a first movable rod and a second movable rod, the first movable rod and the second movable rod are connected, the first movable rod slides in the second base, and the second movable rod slides in the first base.

6. A bar-type needle valve according to claim 5, characterized in that, The second base also has a fifth connecting part, which is disposed in the movable hole, and the first movable rod has a sixth connecting part, which is rotatably connected to the fifth connecting part.

7. A bar stock needle valve according to claim 1, characterized in that, The outer peripheral surface of the valve body has a handle rotating part, and the handle mounting part is integrally connected to the valve body.

8. A bar stock needle valve according to claim 7, characterized in that, The grip rotation part has a prismatic structure.

9. A bar-type needle valve according to claim 1, characterized in that, The valve stem also includes a rotating component, which is located at the end of the valve stem away from the valve core.

10. A bar stock needle valve according to claim 1, characterized in that, The valve seat has a plugging port, which is disposed opposite to the movable hole, so that the valve stem can extend into the plugging port; The valve seat also has an inlet pipe and an outlet pipe, the inlet pipe being connected in sequence to the plug, the movable groove and the outlet pipe.

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