Sleeve type balance valve

Abstract

The utility model relates to the technical field of balance valves, in particular to a sleeve type balance valve which comprises a valve body, the outer side of the valve body is fixedly connected with a connecting end cover which is communicated with the valve body, and a noise reduction assembly is arranged in the connecting end cover. The noise reduction assembly comprises an upper-section cylinder fixedly connected with the inner wall of the connecting end cover, a middle-section cylinder is fixedly connected to the outer side of the upper-section cylinder, and a lower-section cylinder is fixedly connected to one end of the middle-section cylinder. Through the arrangement of the noise reduction assembly, mechanical impedance mutation is formed by the rigidity difference of the barrels with different diameters, the propagation path of fluid pulsation can be blocked, the flexibility is enhanced through the design of the thin wall of the middle section, high-frequency vibration energy is absorbed through elastic deformation, vibration and noise are reduced, and through the arrangement of the first valve hole and the second valve hole, the noise is reduced. The staggered hole channels can enable the flowing direction of fluid to be gradually changed, the fluid is prevented from directly impacting the wall surface of the valve body or generating violent turbulent flow, fluid impact and vibration are reduced, and noise is lowered.

Description

TECHNICAL FIELD

[0001] The utility model relates to balanced valve technical field, especially a sleeve type balanced valve. BACKGROUND

[0002] The static balanced valve mainly changes the opening of the valve disc and the valve seat, and then changes the flow resistance of the flow through the valve to achieve the purpose of adjusting the flow. The object of action is the resistance of the system. The static balanced valve can balance and distribute the new water volume according to the designed calculation ratio. After each branch increases or decreases in proportion, it still meets the flow demand of partial load under the current climate needs, playing the role of heat balance.

[0003] For the related technology in the above, the defects of the existing balanced valve are that the traditional structure adjusting valve is easy to produce vibration and noise when running at small opening, and high-frequency vibration leads to fretting wear between the valve rod and the packing. Therefore, the utility model provides a sleeve type balanced valve. UTILITY MODEL CONTENT

[0004] The purpose of the present application is to provide a sleeve type balanced valve to solve the problems raised in the background art.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a sleeve type balanced valve, comprising a valve body, a connecting end cover in communication is fixedly connected to the outer side of the valve body, and a noise reduction assembly is arranged in the connecting end cover; the noise reduction assembly comprises an upper section cylinder fixedly connected with the inner wall of the connecting end cover, a middle section cylinder fixedly connected with the outer side of the upper section cylinder, and a lower section cylinder fixedly connected to one end of the middle section cylinder; the diameters of the upper section cylinder, the middle section cylinder and the lower section cylinder are arranged in the order of large, small and large; a plurality of windows are formed in the inner wall of the middle section cylinder, the windows are arranged in an inverted V shape, and a guide fin is arranged in each window.

[0006] Preferably, a sealing end cover is arranged on the outer side of the connecting end cover, a pair of bolts are arranged on the outer side of the sealing end cover, and threaded holes matched with the bolts are formed in the outer sides of the connecting end cover and the sealing end cover.

[0007] Preferably, a sealing ring is fixedly connected in the connecting end cover, and the sealing ring is matched with the sealing end cover.

[0008] Preferably, a screw rod is threadedly connected to the inner side of the sealing end cover, and a handle is fixedly connected to one end of the screw rod.

[0009] Preferably, a valve rod is fixedly connected to one end of the screw rod, and a pressing block is fixedly connected to one end of the valve rod.

[0010] Preferably, a valve disc is fixedly connected to the outer side of the pressing block, and a sealing gasket is arranged in the sealing end cover.

[0011] Preferably, the outer side of the valve body is provided with a first valve hole, and the outer side of the valve body is provided with a second valve hole, and the first valve hole and the second valve hole are horizontally and staggered.

[0012] In summary, the technical effects and advantages of the utility model are:

[0013] In the utility model, through the setting of the noise reduction assembly, the stiffness difference of the different diameter cylinders forms mechanical impedance mutation, can block the propagation path of fluid pulsation, the flexible design of the middle section thin wall enhances the flexibility, absorbs high frequency vibration energy through elastic deformation, reduces vibration and noise, and the setting of the first valve hole and the second valve hole, the staggered hole can make the flow direction of fluid gradually change, avoid the direct impact of fluid on the valve body wall surface or the generation of severe turbulent flow, thereby reducing fluid impact and vibration, and reducing noise. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0015] Figure 1 It is a first perspective view of the axial side structure of the utility model;

[0016] Figure 2 It is a second perspective view of the axial side structure of the utility model;

[0017] Figure 3 It is a structure schematic view of the upper section cylinder, the middle section cylinder and the lower section cylinder in the utility model;

[0018] Figure 4 It is Figure 2 A enlarged structure schematic view of the utility model.

[0019] In the drawing: 1, valve body; 2, connecting end cover; 3, sealing end cover; 4, screw rod; 5, handle; 6, sealing gasket; 7, valve stem; 8, sealing ring; 9, first valve hole; 10, pressing block; 11, valve flap; 12, second valve hole; 13, upper section cylinder; 14, middle section cylinder; 15, window; 16, lower section cylinder; 17, bolt. DETAILED DESCRIPTION

[0020] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0021] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "provided with", "sleeved / connected", "connected" and the like should be understood in a broad sense. For example, "connected" can be fixedly connected, or detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium; or can be connected internally between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present application according to the specific circumstances.

[0022] Embodiment one: reference Figures 1-4The sleeve type balance valve shown includes a valve body 1, which plays a key role in controlling fluid flow and pressure, is the core component of the entire balance valve, and ensures that the fluid flows stably and reasonably in the system. The outer side of the valve body 1 is fixedly connected with a connected end cover 2 in communication, the connected end cover 2 is used to connect the valve body 1 and other components, ensures the stability and sealing of the connection, prevents fluid leakage, and the connected end cover 2 is provided with a noise reduction assembly; the noise reduction assembly includes an upper section cylinder 13 fixedly connected with the inner wall of the connected end cover 2, which plays a preliminary buffering and guiding role for the fluid, helps to stabilize the flow direction of the fluid, and reduces the noise generated by the fluid impact, the outer side of the upper section cylinder 13 is fixedly connected with a middle section cylinder 14, which further optimizes the flow state of the fluid, cooperates with the window 15 and the flow guide fin to finely distribute the fluid, one end of the middle section cylinder 14 is fixedly connected with a lower section cylinder 16, which further converges and stabilizes the fluid, cooperates with the upper section cylinder 13 and the middle section cylinder 14, effectively reduces the noise and vibration generated by the fluid during the flow process, the diameters of the upper section cylinder 13, the middle section cylinder 14 and the lower section cylinder 16 are arranged in large-small-large, this special structure design can guide the fluid to change the flow rate and pressure in the cylinder with different diameters, better realize the noise reduction effect, the inner wall of the middle section cylinder 14 is provided with a plurality of windows 15, the windows 15 are arranged in inverted V shape, a plurality of flow guide fins are arranged in the windows 15, the windows 15 and the flow guide fins cooperate with each other to uniformly distribute the fluid, change the flow direction of the fluid, reduce the generation of turbulence and vortex, thereby significantly reducing the noise; the outer side of the connected end cover 2 is provided with a sealing end cover 3, the sealing end cover 3 further strengthens the sealing performance of the connected end cover 2, prevents external impurities from entering, and at the same time ensures that the fluid will not leak from the outer side of the connected end cover 2, a pair of bolts 17 are arranged on the outer side of the sealing end cover 3, and the outer sides of the sealing end cover 3 and the connected end cover 2 are provided with threaded holes matched with the bolts 17. The bolts 17 firmly fix the sealing end cover 3 on the connected end cover 2 through the threaded holes, ensure the installation stability of the sealing end cover 3, and further ensure the sealing performance of the entire connection part; the connected end cover 2 is fixedly connected with a sealing ring 8, and the sealing ring 8 is matched with the sealing end cover 3. The sealing ring 8 further enhances the sealing performance between the sealing end cover 3 and the connected end cover 2, effectively prevents fluid leakage, and improves the working reliability of the balance valve.

[0023] Example two: reference Figures 1-4, based on the same idea as the same as the above embodiment one, the embodiment also proposes that the sealing end cover 3 is used for closing the specific part of the valve body 1 to prevent medium leakage, the inner side of which is threadedly connected with the screw rod 4, and the axial movement of the screw rod in the sealing end cover 3 can be realized by screwing the screw rod 4. One end of the screw rod 4 is fixedly connected with the handle 5, which facilitates the manual rotation of the screw rod 4 by the operator, and provides an operating force point for the rotation of the screw rod 4; one end of the screw rod 4 is fixedly connected with the valve rod 7, which will drive the valve rod 7 to move synchronously when the screw rod 4 rotates and moves axially. One end of the valve rod 7 is fixedly connected with the pressing block 10, and the movement of the valve rod 7 will be transmitted to the pressing block 10, so that the pressing block 10 also generates a corresponding position change; the outer side of the pressing block 10 is fixedly connected with the valve flap 11, and the pressing block 10 will drive the valve flap 11 to move when the pressing block 10 moves, and the valve flap 11 is used to control the flow of medium between the first valve hole 9 and the second valve hole 12, and the opening and closing of the valve can be realized by changing the position of the valve flap 11. The sealing gasket 6 is arranged in the sealing end cover 3, which can enhance the sealing property between the sealing end cover 3 and the valve body 1, and further prevent the medium from leaking from the sealing end cover 3; the outer side of the valve body 1 is provided with the first valve hole 9, which is the passage for the medium to flow into the valve body 1, and the outer side of the valve body 1 is provided with the second valve hole 12, which is the passage for the medium to flow out of the valve body 1, and the first valve hole 9 and the second valve hole 12 are arranged horizontally and staggered, which is helpful for the control of the medium flow and flow direction of the valve.

[0024] The utility model works as follows: the setting of the first valve hole 9 and the second valve hole 12, the staggered hole can make the flow direction of fluid gradually change, avoid fluid directly impacting valve body wall surface or generating violent turbulent flow, thereby reducing fluid impact and vibration, reducing noise, prolonging the service life of valve body, in some high noise and vibration requirement system, such as air conditioning system fluid conveying pipeline, this design helps to improve the stability and comfort of the system, through the setting of upper section cylinder 13, middle section cylinder 14, lower section cylinder 16, the step structure of contraction-expansion produces venturi effect, middle section small diameter cylinder accelerates fluid, reduces static pressure, avoids cavitation, and the setting of multiple windows 15, fluid is divided into multiple streams, through phase interference cancellation reduces vortex noise, flow guide fin destroys fluid boundary layer, avoids high frequency howling.

[0025] Finally, it should be pointed out that: the above only for the preferred embodiment of the utility model, and does not limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, still can modify the technical scheme recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features, any modification, equivalent replacement, improvement etc. within the spirit and principle of the utility model, should be included in the protection scope of the utility model.

Claims

1. A cartridge valve comprising a valve body (1), characterized in that: The outer side of the valve body (1) is fixedly connected with a connected end cover (2) in communication, and a noise reduction assembly is arranged in the connected end cover (2); The noise reduction assembly comprises an upper section cylinder (13) fixedly connected with the inner wall of the connected end cover (2), the outer side of the upper section cylinder (13) is fixedly connected with a middle section cylinder (14), one end of the middle section cylinder (14) is fixedly connected with a lower section cylinder (16), the diameters of the upper section cylinder (13), the middle section cylinder (14) and the lower section cylinder (16) are arranged in a large-small-large sequence, the inner wall of the middle section cylinder (14) is provided with a plurality of windows (15), the windows (15) are arranged in an inverted V shape, and each of the windows (15) is provided with a flow guide fin.

2. A cartridge valve according to claim 1, characterised in that: The outer side of the connected end cover (2) is provided with a sealing end cover (3), the outer side of the sealing end cover (3) is provided with a pair of bolts (17), and the outer sides of the sealing end cover (3) and the connected end cover (2) are provided with threaded holes matched with the bolts (17).

3. A cartridge valve according to claim 2, characterised in that: The connected end cover (2) is fixedly connected with a sealing ring (8) inside, and the sealing ring (8) is matched with the sealing end cover (3).

4. A cartridge valve according to claim 3, characterised in that: The inner side of the sealing end cover (3) is threadedly connected with a screw rod (4), one end of the screw rod (4) is fixedly connected with a handle (5).

5. A cartridge valve according to claim 4, characterised in that: One end of the screw rod (4) is fixedly connected with a valve rod (7), and one end of the valve rod (7) is fixedly connected with a pressing block (10).

6. A cartridge valve according to claim 5, characterised in that: The outer side of the pressing block (10) is fixedly connected with a valve clack (11), and the sealing end cover (3) is provided with a sealing gasket (6) inside.

7. A cartridge valve according to claim 1, characterized in that: The outer side of the valve body (1) is provided with a first valve hole (9), the outer side of the valve body (1) is provided with a second valve hole (12), and the first valve hole (9) and the second valve hole (12) are arranged horizontally and staggered.

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