A throttle valve with erosion resistance

Abstract

The present invention discloses an erosion-resistant throttle valve, which relates to the technical field of throttle valves, and comprises: a valve body, which is L-shaped and internally provided with a first space, a second space and a third space which are connected and distributed in sequence, wherein the first space and the second space are horizontal, and the third space is vertical; a valve seat, which is arranged at the connection between the first space and the second space; a valve core, which is located on the side of the valve seat close to the first space; a valve stem, one end of which is connected to the valve core, and the other end extends out of the valve body and is driven by a driving device; a connecting seat, which is semi-embedded in the first space of the valve body and is used to be connected to an external pipe body, and a spring is further arranged between the connecting seat and the valve core; wherein the spring is accommodated in a sleeve assembly, and the sleeve assembly is arranged in the first space so as to accommodate the valve core, and by arranging the sleeve assembly, the service life of the valve core is effectively extended and the maintenance cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of throttle valves, in particular to an erosion-resistant throttle valve. Background Art

[0002] As a key fluid control component, the core function of the throttle valve is to accurately adjust the flow rate of fluids (including liquids and gases) to ensure stable flow within the predetermined operating range. This feature makes it play an indispensable role in many industrial applications, such as chemical, petroleum, pharmaceutical, food processing and machinery manufacturing industries. However, under the existing technical framework, the design of the throttle valve has certain limitations, especially the durability of the valve core part.

[0003] Specifically, the valve core of the throttle valve is usually directly exposed to the high-speed impact of the fluid. This direct exposure not only means that the valve core needs to withstand huge impact forces, but also means that it lacks sufficient buffer protection measures to mitigate this impact. In fluid dynamics, the energy carried by high-speed flowing fluid is huge. Long-term and continuous scouring of the valve core will gradually cause the material on the surface of the valve core to wear. This wear is often gradual, but over time, the degree of wear will gradually increase, directly affecting the sealing performance of the throttle valve.

[0004] The decline or failure of sealing performance is one of the serious problems faced by throttle valves. Once the sealing performance is damaged, the fluid or gas that was originally precisely controlled by the throttle valve may leak. Leakage not only means reduced system efficiency and waste of resources, but more importantly, it may also pose a threat to the overall operational stability and safety of the system.

[0005] Therefore, it is necessary to provide an anti-erosion throttle valve to solve the above problems. Summary of the invention

[0006] In order to solve the above problems, the present invention provides the following technical solutions: an anti-erosion throttle valve, characterized in that it comprises:

[0007] The valve body is L-shaped and has a first space, a second space and a third space which are sequentially connected and distributed therein, wherein the first space and the second space are horizontal and the third space is vertical;

[0008] A valve seat, which is arranged at the connection between the first space and the second space;

[0009] a valve core, which is located on a side of the valve seat close to the first space;

[0010] A valve stem, one end of which is connected to the valve core, and the other end of which extends out of the valve body and is driven by a driving device, wherein the driving device is used to drive the valve stem to move axially;

[0011] A connecting seat, which is half-embedded in the first space of the valve body and is used to be connected to the external tube body, and a spring is also provided between the connecting seat and the valve core;

[0012] The spring is accommodated in a sleeve assembly, and the sleeve assembly is arranged in the first space so as to accommodate the valve core.

[0013] Further, preferably, the sleeve assembly comprises:

[0014] a base ring, which is fixed in the first space and has a plurality of drainage holes;

[0015] A sleeve, which is fixed to one side of the base ring and is used to accommodate the spring and the valve core;

[0016] A spring seat is slidably arranged in the sleeve and connected to the spring, and one side of the spring seat is connected to the connecting seat by a rod.

[0017] Furthermore, as a preference, an extension ring is fixed to the outside of the connecting seat and is sleeved on the outside of the valve body, a connecting ring is fixed to one end of the extension ring, a fixing ring corresponding to the connecting ring is fixed on the valve body, and the distance between the connecting ring and the fixing ring is adjusted by bolts.

[0018] Further, preferably, a valve stem seat is fixed to one side of the valve body, a sealing sleeve is embedded in the interior of the valve stem seat, the valve stem is connected to the drive device after sliding through the valve stem seat, and the valve stem seat and the sealing sleeve are in dynamic sealing cooperation.

[0019] Further, as a preference, a diverter head is provided in the third space for diverting the fluid, and a diverter hole is provided on the diverter head.

[0020] Further, preferably, a guide ring seat located below the diverter head is fixed on the inner wall of the valve body, a vibration plate is provided in the middle of the guide ring seat, and an end of the vibration plate extends into the diverter head.

[0021] Further, preferably, the guide ring seat is used to guide the fluid toward the middle position of the vibration plate.

[0022] Further, preferably, a beating protrusion is attached to the outer surface of the vibration plate.

[0023] Compared with the prior art, the present invention provides an anti-erosion throttle valve, which has the following beneficial effects:

[0024] In the present invention, the speed and energy of the fluid directly impacting the valve core are greatly reduced through the buffering effect of the second space, and the service life of the valve core is effectively extended and the maintenance cost is reduced by providing the sleeve assembly.

[0025] In the present invention, the spring arranged between the valve core and the connecting seat not only plays a pre-tightening role, but also provides a certain buffer when the fluid impacts the valve core.

[0026] In the present invention, when the fluid passes through the diverter, a certain impact force is generated and acts on the vibration plate, causing it to vibrate, thereby making the fluid more uniform and reducing the risk of damage to the valve core. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an anti-erosion throttle valve;

[0028] Figure 2 It is a structural schematic diagram of an extension ring in an anti-erosion throttle valve;

[0029] Figure 3 It is a structural schematic diagram of a valve stem seat in an erosion-resistant throttle valve;

[0030] Figure 4 A schematic diagram of the flow of fluid in an anti-erosion throttle valve;

[0031] In the figure: 1. valve body; 2. valve seat; 3. first space; 4. second space; 5. third space; 6. valve stem; 7. valve stem seat; 8. sealing sleeve; 10. threaded seat; 11. driving device; 12. connecting seat; 13. valve core; 14. extension ring; 15. sleeve assembly; 151. spring seat; 152. sleeve; 153. base ring; 16. spring; 17. connecting ring; 18. fixing ring; 19. diverter hole; 20. diverter head; 21. guide ring seat; 22. vibrating plate. DETAILED DESCRIPTION

[0032] The terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned description of the drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the terms used in this way can be interchangeable under appropriate circumstances, which is merely a way of distinguishing the objects of the same attributes when describing them in the embodiments of the present application. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, so that the process, method, system, product or equipment comprising a series of units need not be limited to those units, but may include other units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0033] Please refer to Figure 1-Figure 4In an embodiment of the present invention, an anti-erosion throttle valve is provided, comprising:

[0034] The valve body 1 is L-shaped and has a first space 3, a second space 4 and a third space 5 which are connected and distributed in sequence. The first space 3 and the second space 4 are horizontal, and the third space 5 is vertical.

[0035] A valve seat 2, which is arranged at the connection between the first space 3 and the second space 4;

[0036] a valve core 13, which is located at a side of the valve seat 2 close to the first space 3;

[0037] A valve stem 6, one end of which is connected to the valve core 13, and the other end of which extends out of the valve body 1 and is driven by a driving device 11, wherein the driving device 11 is used to drive the valve stem 6 to move axially;

[0038] A connecting seat 12, which is half-embedded in the first space 3 of the valve body 1 and is used to be connected to an external pipe body, and a spring 16 is also provided between the connecting seat 12 and the valve core 13;

[0039] The spring 16 is accommodated in a sleeve assembly 15 , and the sleeve assembly 15 is disposed in the first space 3 so as to accommodate the valve core 13 .

[0040] During implementation, the fluid first enters the third space 5 (vertical) of the valve body 1, and then flows to the second space 4 (horizontal). Since the second space 4 is connected to the first space 3, the fluid is buffered and dispersed to a certain extent in the second space 4, reducing the flow rate and impact force. Then, the fluid continues to flow to the first space 3, and finally enters the downstream system through the regulation of the valve core 13.

[0041] The valve core 13 is located on the side of the valve seat 2 close to the first space 3, and is connected to an external driving device 11 (such as a screw nut sub-mechanism) through the valve stem 6. The driving device 11 controls the axial movement of the valve stem 6, and then adjusts the opening between the valve core 13 and the valve seat 2, thereby achieving precise control of the fluid flow.

[0042] Based on this, in this embodiment, the spring 16 disposed between the valve core 13 and the connecting seat 12 not only plays a pre-tightening role, but also provides a certain buffer when the fluid impacts the valve core 13. When the fluid impact force is large, the spring 16 can absorb part of the energy, reduce the direct impact on the valve core 13 and the drive device 11 (generally the screw nut pair mechanism), and prevent wear and engagement failure caused by long-term use.

[0043] In order to improve the erosion resistance of the valve core 13 and the valve seat 2, a corrosion-resistant layer can be coated on their surface or the whole can be made of hard alloy. Common corrosion-resistant coatings include:

[0044] Electroplating hard chrome layer: Electroplating chrome treatment can significantly enhance the hardness and wear resistance of the surface of the valve core 13 and the valve seat 2, thereby improving its impact resistance. At the same time, the chrome plating layer also has good corrosion resistance.

[0045] In actual preparation, the axial length of the second space 4 may be 1.5 to 3 times the diameter of the third space 5 .

[0046] This configuration has many advantages:

[0047] 1. Enhanced buffering effect: The longer second space 4 provides a larger buffering area for the fluid, so that the fluid can more effectively reduce the flow velocity and impact force before flowing to the valve core 13, thereby protecting the valve core 13 and the downstream system.

[0048] 2. Improved fluid stability: A longer buffer area helps the fluid transition more smoothly, reduces the formation of turbulence and eddies, and improves the stability of fluid flow.

[0049] Of course, the axial length of the second space 4 should not be too long, otherwise it will lose its proper function, be inconvenient for installation, and have a high cost.

[0050] In addition, the sleeve assembly 15 comprises:

[0051] A base ring 153, which is fixed in the first space 3 and has a plurality of drainage holes;

[0052] A sleeve 152, which is fixed to one side of the base ring 153 and is used to accommodate the spring 16 and the valve core 13;

[0053] The spring seat 151 is slidably disposed in the sleeve 152 and connected to the spring 16 , and one side of the spring seat 151 is connected to the connecting seat 12 by a rod.

[0054] Among them, Figure 4 When the driving device 11 drives the valve stem 6 to move axially and thus adjust the opening between the valve core 13 and the valve seat 2, the valve core 13 can be hidden in the sleeve 152, thereby achieving better protection for the valve core 13, so that only the right side of the valve core 13 will be impacted by the fluid, and the right side of the valve core 13 has little effect on the overall sealing effect of the valve core 13, that is, it will not have a significant impact on the overall valve core 13, so that the service life of the valve core 13 is extended.

[0055] In this embodiment, an extension ring 14 is fixed to the outside of the connecting seat 12 and is sleeved on the outside of the valve body 1. A connecting ring 17 is fixed to one end of the extension ring 14. A fixing ring 18 corresponding to the connecting ring 17 is fixed to the valve body 1. The distance between the connecting ring 17 and the fixing ring 18 is adjusted by bolts.

[0056] By adjusting the distance between the connecting ring 17 and the fixing ring 18, the compression degree of the spring 16 in the initial state can be accurately controlled, thereby adjusting the force of the spring acting on the valve core 13. Thus, the user can flexibly adjust the preload force of the spring 16 according to the actual working conditions to achieve the best balance effect.

[0057] In addition, under extreme conditions, such as high temperature, corrosive environment or long-term high-intensity stress, the material of the spring 16 may change, which may affect its elastic modulus and cause its support force on the valve core 13 to weaken. In this embodiment, by regularly adjusting the distance between the connecting ring 17 and the fixing ring 18, the compression degree of the spring 16 can be readjusted to compensate for the aging effect of the spring 16, reduce the frequency of replacing the spring 16, and reduce maintenance costs.

[0058] In this embodiment, a valve stem seat 7 is fixed to one side of the valve body 1, and a sealing sleeve 8 is embedded in the valve stem seat 7. The valve stem 6 slides through the valve stem seat 7 and is connected to the driving device 11. The valve stem seat 7 and the sealing sleeve 8 form a dynamic seal.

[0059] In addition, the external thread of the valve body 1 is connected with a threaded seat 10 for limiting the position of the valve stem seat 7 .

[0060] The valve stem seat 7 and the sealing sleeve 8 embedded therein provide stable support and reliable sealing for the valve stem 6. The valve stem 6 slides through the valve stem seat 7 and is connected to the driving device 11. The dynamic seal between the sealing sleeve 8 and the valve stem seat 7 ensures that the fluid will not leak through the gap between the valve stem 6 and the valve stem seat 7, thereby ensuring the sealing performance of the throttle valve.

[0061] The driving device 11 may be a screw-nut pair mechanism, an electric telescopic rod, a hydraulic cylinder, etc. Generally speaking, the driving device 11 preferably uses a screw-nut pair mechanism, which will not be described in detail here.

[0062] In this embodiment, a diverter head 20 is provided in the third space 5 for diverting the fluid, and a diverter hole 19 is provided on the diverter head 20 .

[0063] In addition, a guide ring seat 21 located below the diverter head 20 is fixed on the inner wall of the valve body 1 , a vibration plate 22 is provided in the middle of the guide ring seat 21 , and an end of the vibration plate 22 extends into the diverter head 20 .

[0064] In this embodiment, the flow diverter 20 provided in the third space 5 performs flow diversion processing on the fluid. This structure helps to evenly distribute the fluid into multiple channels, reduce the fluid flow rate and impact force, reduce the direct impact on the valve core 13, and thus extend the service life of the valve core 13.

[0065] The guide ring seat 21 is fixed on the inner wall of the valve body 1 and is located below the diverter head 20. The vibrating plate 22 arranged in the middle thereof extends into the diverter head 20 through the end portion, and the concentrated treatment of the fluid by the diverter head 20 is utilized to enhance the vibration driving effect of the vibrating plate 22. When the fluid passes through the diverter head 20, a certain impact force is generated, and these forces act on the vibrating plate 22 to make it vibrate.

[0066] In addition, the vibration of the vibrating plate 22 acts on the fluid from the diverter hole 19, making its flow more uniform. This uniform fluid flow helps to reduce the local impact of the fluid on the valve core 13, improve the fluid passing rate, and reduce the risk of damage to the valve core.

[0067] That is to say, through the synergistic effect of the flow splitter 20 and the vibration plate 22, the fluid is processed more evenly and stably when passing through the throttle valve, thereby improving the fluid passing rate and processing efficiency.

[0068] In addition, the guide ring seat 21 is used to guide the fluid toward the middle position of the vibration plate 22 .

[0069] In addition, a beating protrusion is attached to the outer surface of the vibration piece 22 .

[0070] The beating protrusions will interact more strongly with the fluid when the vibration plate 22 vibrates, thereby enhancing the disturbance effect on the fluid. This disturbance helps to further homogenize the fluid flow and reduce eddy currents and turbulence in the fluid.

[0071] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An anti-erosion throttle valve, characterized in that: include: A valve body (1) is L-shaped and is provided with a first space (3), a second space (4) and a third space (5) which are connected and distributed in sequence, wherein the first space (3) and the second space (4) are horizontal, and the third space (5) is vertical; A valve seat (2) disposed at the connection between the first space (3) and the second space (4); A valve core (13) located on a side of the valve seat (2) close to the first space (3); A valve stem (6), one end of which is connected to the valve core (13), and the other end of which extends out of the valve body (1) and is driven by a driving device (11), wherein the driving device (11) is used to drive the valve stem (6) to move axially; A connecting seat (12) which is half-embedded in the first space (3) of the valve body (1) and is used to be connected to an external pipe body, and a spring (16) is also provided between the connecting seat (12) and the valve core (13); The spring (16) is accommodated in a sleeve assembly (15), and the sleeve assembly (15) is arranged in the first space (3) so as to accommodate the valve core (13); The sleeve assembly (15) comprises: A base ring (153) is fixed in the first space (3), and the base ring (153) has a plurality of drainage holes; A sleeve (152) fixed to one side of the base ring (153) and used for accommodating the spring (16) and the valve core (13); A spring seat (151) is slidably disposed in the sleeve (152) and connected to the spring (16), and one side of the spring seat (151) is connected to the connecting seat (12) by a rod; The axial length of the second space (4) is 1.5 to 3 times the diameter of the third space (5); A flow diverter (20) is provided in the third space (5) for diverting the fluid, and a flow diverter hole (19) is provided on the flow diverter (20); A guide ring seat (21) located below the flow diverter (20) is fixed on the inner wall of the valve body (1), a vibration plate (22) is provided in the middle of the guide ring seat (21), and an end of the vibration plate (22) extends into the flow diverter (20); The guide ring seat (21) is used to guide the fluid toward the middle position of the vibration plate (22).

2. The erosion-resistant throttle valve according to claim 1, characterized in that: An extension ring (14) sleeved on the outside of the valve body (1) is also fixed to the outside of the connection seat (12); a connection ring (17) is fixed to one end of the extension ring (14); a fixing ring (18) corresponding to the connection ring (17) is fixed to the valve body (1); and the distance between the connection ring (17) and the fixing ring (18) is adjusted by means of bolts.

3. The erosion-resistant throttle valve according to claim 1, characterized in that: A valve stem seat (7) is fixed to one side of the valve body (1), a sealing sleeve (8) is embedded in the interior of the valve stem seat (7), the valve stem (6) is connected to the driving device (11) after sliding through the valve stem seat (7), and the valve stem seat (7) and the sealing sleeve (8) are in dynamic sealing cooperation.

4. The erosion-resistant throttle valve according to claim 1, characterized in that: The outer surface of the vibration plate (22) is attached with a beating protrusion.

Images