Flow regulating valve with pressure reduction and noise elimination structure

Abstract

The utility model discloses a flow regulating valve with a pressure reduction and noise elimination structure, and relates to the technical field of flow regulating valves. The flow regulating valve with the pressure reduction and noise elimination structure comprises a valve body, a pressure reduction and noise elimination mechanism is arranged at one end of the valve body, and the pressure reduction and noise elimination mechanism comprises a grading buffer assembly, a first throttling orifice plate, a second throttling orifice plate, a first connecting rod, a second connecting rod and a third connecting rod, a first connecting rod is fixed on the valve body, a second throttling orifice plate and a third throttling orifice plate are further fixed on the first connecting rod, and the first throttling orifice plate, the second throttling orifice plate and the third throttling orifice plate are sequentially arranged and distributed from the end part of the valve body to the inner side of the valve body. The pressure reduction degree of the flow regulating valve is limited, and the flow regulating valve cannot be suitable for high-strength fluid pressure.

Description

Technical Field

[0001] This utility model relates to the field of flow regulating valve technology, specifically a flow regulating valve with a pressure-reducing and noise-reducing structure. Background Technology

[0002] A flow control valve is a device used to regulate the flow rate of fluids in pipelines, and it is widely used in industries such as petroleum, chemical, power, and metallurgy. Traditional flow control valves mainly achieve flow regulation by changing the flow area between the valve core and the valve seat. However, under high pressure differential conditions, strong turbulence and cavitation phenomena occur when the fluid flows through the valve core and valve seat.

[0003] The reference patent, entitled "Pressure Reduction and Noise Reduction Device for a Flow Control Valve" (Publication No. CN217130502U, Application Date 2022-01-12), is characterized by: a number of noise-reducing rings installed concentrically within the valve cavity at the valve seat outlet; each noise-reducing ring consists of a circular base and at least two serrated rings, each serrated ring concentrically installed on the upper plane of the circular base, with adjacent serrated rings forming an annular buffer cavity. The serrated rings' teeth are staggered circumferentially and installed in opposite directions; the inner wall of the inner serrated ring dynamically engages with the outer surface of the valve core. Fluid enters the annular buffer cavity through the teeth of the inner serrated ring, decelerates, and then flows out through the teeth of the outer serrated ring. After passing through a labyrinthine flow channel, the flow velocity and noise are reduced. It has advantages such as good pressure reduction, noise reduction, and good flow regulation linearity.

[0004] Based on the aforementioned patent, existing pressure-reducing and noise-reducing devices for flow control valves lack a structure for progressively reducing the pressure of the fluid, resulting in limited pressure reduction capabilities and making them unsuitable for high-intensity fluid pressures. Therefore, this utility model provides a flow control valve with a pressure-reducing and noise-reducing structure. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a flow regulating valve with a pressure-reducing and noise-reducing structure. This solves the problem that existing pressure-reducing and noise-reducing devices for flow regulating valves lack a structure for progressively reducing the pressure of the fluid, resulting in limited pressure reduction capabilities and making them unsuitable for high-intensity fluid pressures.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a flow regulating valve with a pressure-reducing and noise-reducing structure, comprising a valve body, wherein a pressure-reducing and noise-reducing mechanism is provided at one end of the valve body, the pressure-reducing and noise-reducing mechanism comprising:

[0007] A graded buffer assembly is disposed on the inner wall of one side of the valve body, including a first throttling orifice plate inserted into the inner wall of one side of the valve body, a first connecting rod fixed to the side of the first throttling orifice plate, and a second throttling orifice plate and a third throttling orifice plate fixed on the first connecting rod. The first throttling orifice plate, the second throttling orifice plate and the third throttling orifice plate are arranged sequentially from the end of the valve body to its inner side, and the first throttling orifice plate, the second throttling orifice plate and the third throttling orifice plate are provided with throttling orifices with progressively smaller orifice diameters.

[0008] The assembly component is mounted on the valve body and the stage buffer assembly, and is used to fix the stage buffer assembly to the valve body.

[0009] Preferably, the assembly includes a second connecting rod fixed to the front end of the first throttling orifice plate, and a sleeve is fixed on the second connecting rod, with a sliding rod slidably installed at the other end of the sleeve.

[0010] Preferably, a trapezoidal block is fixed to the end of the slide rod, and a first spring is connected between the trapezoidal block and the sleeve. A trapezoidal groove seat for the trapezoidal block to engage is fixed to the inner wall of one end of the valve body.

[0011] Preferably, a pressure relief mechanism is fixedly installed on the outer wall of the front end of the valve body. The pressure relief mechanism includes a cylinder fixed to the outer wall of the front end of the valve body, and a conduit is connected between the cylinder and the valve body.

[0012] Preferably, a piston is slidably installed on the inner wall of the cylinder, a second spring is connected between the piston and the bottom wall of the cylinder, and a pressure relief pipe is interconnected at the lower end of the cylinder.

[0013] Preferably, a handle is fixed to the front end of the first throttling orifice plate, and the throttling orifices provided on the first, second, and third throttling orifice plates are all in the form of flat-topped cone structures.

[0014] Beneficial effects

[0015] This invention provides a flow regulating valve with a pressure-reducing and noise-reducing structure. Compared with the prior art, it has the following advantages:

[0016] 1. This flow regulating valve with a pressure-reducing and noise-reducing structure is designed with a graded buffer assembly, which includes a first throttling orifice plate, a second throttling orifice plate, and a third throttling orifice plate. The three are arranged sequentially from the end of the valve body to the inside. The first throttling orifice plate, the second throttling orifice plate, and the third throttling orifice plate are provided with throttling orifices with progressively smaller diameters, which are used to reduce fluid pressure and noise in stages. The trapezoidal block is engaged with the trapezoidal groove seat on the inner wall of the valve body, and the first spring provides the restoring force to ensure that the graded buffer assembly is fixed to the valve body. In addition, the throttling orifice has a flat-topped conical structure, which allows liquid to flow in through the flat-topped conical through hole, further optimizing the pressure reduction and noise reduction effect when the fluid passes through.

[0017] 2. This flow regulating valve with a pressure-reducing and noise-reducing structure is designed with a pressure relief mechanism, which includes a cylinder, a guide tube, a piston, a second spring, and a pressure relief pipe. When the pressure inside the valve body is too high, the fluid enters the cylinder through the guide tube, pushing the piston to compress the second spring. When the pressure reaches the set value, the fluid is discharged through the pressure relief pipe, thus relieving pressure and further extending the service life of the flow regulating valve when it exceeds the pressure limit during application. Attached Figure Description

[0018] Figure 1 This is a three-dimensional appearance schematic diagram of the present utility model;

[0019] Figure 2 This is a schematic diagram of the graded buffer component of this utility model;

[0020] Figure 3 This is a schematic diagram of the assembly components of this utility model;

[0021] Figure 4 This is a partial cross-sectional schematic diagram of the pressure relief mechanism of this utility model.

[0022] In the diagram: 1-Valve body, 2-Pressure reduction and noise reduction mechanism, 21-Graded buffer assembly, 211-First throttling orifice plate, 212-Second throttling orifice plate, 213-Third throttling orifice plate, 214-First connecting rod, 215-Throttling orifice, 22-Assembly assembly, 221-Second connecting rod, 222-Sleeve, 223-Slide rod, 224-Trapezoidal block, 225-First spring, 226-Trapezoidal groove seat, 3-Pressure relief mechanism, 31-Cylinder, 32-Conduit, 33-Second spring, 34-Piston, 35-Pressure relief pipe, 4-Handle. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1-4This utility model provides a technical solution: a flow regulating valve with a pressure-reducing and noise-reducing structure, including a valve body 1, a pressure-reducing and noise-reducing mechanism 2 at one end of the valve body 1, the pressure-reducing and noise-reducing mechanism 2 including: a graded buffer assembly 21, disposed on the inner wall of one side of the valve body 1, including a first throttling orifice plate 211 inserted into the inner wall of one side of the valve body 1, a first connecting rod 214 fixed to the side of the first throttling orifice plate 211, and a second throttling orifice plate 212 and a third throttling orifice plate 213 fixed on the first connecting rod 214, the first throttling orifice plate 211, the second throttling orifice plate 212 and the third throttling orifice plate 213 arranged sequentially from the end of the valve body 1 to its inner side, and the first throttling orifice plate 211, the second throttling orifice plate 212 and the third throttling orifice plate 213 are provided with throttling orifices 215 with progressively smaller orifice diameters; and an assembly assembly 22, disposed on the valve body 1 and the graded buffer assembly 21, and used to fix the graded buffer assembly 21 to the valve body 1.

[0025] In this embodiment, the assembly component 22 includes a second connecting rod 221 fixed to the front end of the first throttling orifice plate 211, and a sleeve 222 fixed on the second connecting rod 221. A slide rod 223 is slidably installed on the other end of the sleeve 222, and a trapezoidal block 224 is fixed at the end of the slide rod 223. A first spring 225 is connected between the trapezoidal block 224 and the sleeve 222. A trapezoidal groove seat 226 for the trapezoidal block 224 to engage with the inner wall of one end of the valve body 1 is fixed. By engaging the trapezoidal block 224 with the trapezoidal groove seat 226 on the inner wall of the valve body 1, the first spring 225 provides a restoring force to ensure that the graded buffer assembly 21 is fixed to the valve body 1, which facilitates disassembly and assembly.

[0026] In this embodiment, a pressure relief mechanism 3 is fixedly installed on the outer wall of the front end of the valve body 1. The pressure relief mechanism 3 includes a cylinder 31 fixed to the outer wall of the front end of the valve body 1, and a conduit 32 is connected between the cylinder 31 and the valve body 1. A piston 34 is slidably installed on the inner wall of the cylinder 31. A second spring 33 is connected between the piston 34 and the bottom wall of the cylinder 31. A pressure relief pipe 35 is connected to the lower end of the cylinder 31. Fluid enters the cylinder 31 through the conduit 32, pushing the piston 34 to compress the second spring 33. When the pressure reaches the set value, the fluid is discharged through the pressure relief pipe 35 to achieve pressure relief.

[0027] In this embodiment, a handle 4 is fixed to the front end of the first throttling orifice plate 211, and the throttling holes 215 provided on the first throttling orifice plate 211, the second throttling orifice plate 212 and the third throttling orifice plate 213 are all in the form of flat-topped cone structures; the handle 4 makes it convenient for staff to manually pull out the throttling orifice plate structure.

[0028] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0029] During operation, the graded buffer assembly 21 includes a first throttling orifice plate 211, a second throttling orifice plate 212, and a third throttling orifice plate 213, which are arranged sequentially from the end of the valve body 1 to the inside. The first throttling orifice plate 211, the second throttling orifice plate 212, and the third throttling orifice plate 213 are provided with throttling orifices 215 with progressively smaller diameters, used to gradually reduce fluid pressure and reduce noise. The assembly assembly 22 includes a second connecting rod 221, a sleeve 222, a slide rod 223, a trapezoidal block 224, and a first spring 225. The second connecting rod 221 is fixed to the front end of the first throttling orifice plate 211, the sleeve 222 is slidably mounted on the slide rod 223, and the trapezoidal block 224 is fixed to the end of the slide rod 223. The trapezoidal block 224 is connected to the valve body. The trapezoidal groove seat 226 on the inner wall of valve 1 engages with the first spring 225, which provides a restoring force to ensure that the graded buffer assembly 21 is fixed to the valve body 1. The pressure relief mechanism 3 includes a cylinder 31, a conduit 32, a piston 34, a second spring 33, and a pressure relief pipe 35. When the pressure inside the valve body 1 is too high, the fluid enters the cylinder 31 through the conduit 32, pushing the piston 34 to compress the second spring 33. When the pressure reaches the set value, the fluid is discharged through the pressure relief pipe 35 to achieve pressure relief. A handle 4 is fixed at the front end of the first throttling orifice plate 211 for manually adjusting the position of the graded buffer assembly 21. The throttling orifice 215 has a flat-topped conical structure, allowing the liquid to flow in through the flat-topped conical through hole, further optimizing the pressure reduction and noise reduction effect when the fluid passes through.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] 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. A flow regulating valve with a pressure-reducing and noise-reducing structure, comprising a valve body (1), characterized in that: The valve body (1) is provided with a pressure-reducing and noise-reducing mechanism (2) at one end. The pressure-reducing and noise-reducing mechanism (2) includes: A graded buffer assembly (21) is disposed on the inner wall of one side of the valve body (1), including a first throttling orifice plate (211) inserted into the inner wall of one side of the valve body (1), a first connecting rod (214) is fixed on the side of the first throttling orifice plate (211), and a second throttling orifice plate (212) and a third throttling orifice plate (213) are also fixed on the first connecting rod (214). The first throttling orifice plate (211), the second throttling orifice plate (212) and the third throttling orifice plate (213) are arranged sequentially from the end of the valve body (1) to its inner side, and the first throttling orifice plate (211), the second throttling orifice plate (212) and the third throttling orifice plate (213) are provided with throttling orifices (215) with progressively smaller orifice diameters. Assembly component (22) is disposed on valve body (1) and graded buffer component (21) and is used to fix graded buffer component (21) to valve body (1).

2. The flow regulating valve with a pressure-reducing and noise-reducing structure according to claim 1, characterized in that: The assembly component (22) includes a second connecting rod (221) fixed to the front end of the first throttling orifice plate (211), and a sleeve (222) is fixed on the second connecting rod (221), and a slide rod (223) is slidably installed on the other end of the sleeve (222).

3. A flow regulating valve with a pressure-reducing and noise-reducing structure according to claim 2, characterized in that: The slide bar (223) is fixed with a trapezoidal block (224) at its end, and a first spring (225) is connected between the trapezoidal block (224) and the sleeve (222). A trapezoidal groove seat (226) for the trapezoidal block (224) to engage is fixed on the inner wall of one end of the valve body (1).

4. A flow regulating valve with a pressure-reducing and noise-reducing structure according to claim 1, characterized in that: A pressure relief mechanism (3) is fixedly installed on the outer wall of the front end of the valve body (1). The pressure relief mechanism (3) includes a cylinder (31) fixed to the outer wall of the front end of the valve body (1), and a conduit (32) is connected between the cylinder (31) and the valve body (1).

5. A flow regulating valve with a pressure-reducing and noise-reducing structure according to claim 4, characterized in that: A piston (34) is slidably installed on the inner wall of the cylinder (31), and a second spring (33) is connected between the piston (34) and the bottom wall of the cylinder (31). A pressure relief pipe (35) is interconnected at the lower end of the cylinder (31).

6. A flow regulating valve with a pressure-reducing and noise-reducing structure according to claim 1, characterized in that: The first throttling orifice plate (211) has a handle (4) fixed at its front end, and the throttling holes (215) provided on the first throttling orifice plate (211), the second throttling orifice plate (212) and the third throttling orifice plate (213) are all flat-topped cone structures.

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