Improved eccentric rotary valve

Abstract

The utility model relates to an improved eccentric rotary valve, which belongs to the technical field of eccentric rotary valves, and comprises a valve body, a valve rod rotating in the valve body, a valve seat and a valve core component, and an adjusting device capable of automatically adjusting is mounted in a spherical valve core. After the structure is adopted, the ball valve has the advantages that liquid enters the spherical valve element through the communicating hole and firstly impacts the movable plate and the inward arc-shaped buffer groove in the movable plate, the flow direction of the liquid can be changed, impact force is relieved, and therefore the spherical valve element is protected, and the impact force and vibration of the spherical valve element are reduced; normal operation of the improved eccentric rotary valve is guaranteed, the service life is prolonged, after being blocked by the buffer protrusions, liquid can be guaranteed not to generate huge impact force on the valve body when passing through the valve body quickly, vibration generated when the fluid flows quickly to impact the spherical valve element is weakened and counteracted, and the service life of the improved eccentric rotary valve is prolonged. Normal operation of the improved eccentric rotary valve is guaranteed, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of eccentric rotary valves, in particular to an improved eccentric rotary valve. Background Art

[0002] The eccentric rotary valve is a straight-through valve body structure with novel structure and small fluid resistance. The rotation center of the valve core is not concentric with the rotation axis, which can reduce valve seat wear and extend service life. There is a guide wing at the rear of the valve core, which is conducive to the stable flow of fluid and has excellent stability. At the same time, it also has the advantages of large flow and wide adjustable range, and is particularly suitable for the control of process systems containing slurry.

[0003] When the valve core and valve seat of the eccentric rotary valve are in contact and closed, the valve core flexible arm produces a small elastic deformation and elastic tightening force under the thrust of the actuator, making the valve core and valve seat contact more tightly and firmly. Due to the eccentric structure of this type of valve core, its dynamic balance will inevitably be affected. When the valve core and valve seat are separated, especially at a small opening, the fluid in the valve seat end passes through the valve core quickly, and the unbalanced force will cause the valve core to vibrate, seriously affecting the normal operation of the valve for a long time and greatly reducing the service life of the valve. Utility Model Content

[0004] The utility model aims to solve the above technical problems and provides an improved eccentric rotary valve.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is:

[0006] An improved eccentric rotary valve comprises a valve body and a valve stem rotating in the valve body, wherein the valve body is provided with a medium inlet channel and a medium outlet channel, and further comprises a valve seat and a valve core assembly in the valve body.

[0007] The valve core assembly comprises a spherical valve core arranged at the lower end of the valve stem, the spherical valve core can rotate in the valve seat through the valve stem, a medium communication groove is provided on one side of the spherical valve core, and a communication hole is provided on the lower side of one end of the valve seat close to the medium inlet channel;

[0008] An automatically adjustable regulating device is installed in the spherical valve core.

[0009] Preferably, the medium inlet channel and the medium outlet channel are arranged alternately up and down.

[0010] Preferably, the regulating device comprises a movable plate, a movable groove cooperating with the movable plate for movement is provided in the spherical valve core, and an regulating spring is installed between the movable plate and the movable groove.

[0011] Preferably, a buffer groove is provided at one end of the movable plate away from the adjusting spring.

[0012] Preferably, a buffer protrusion is installed at one end of the spherical valve core close to the medium outlet channel.

[0013] Preferably, the thickness of the buffer protrusion is set to decrease as it is farther away from the spherical valve core.

[0014] Preferably, a sealing layer is installed on the inner wall of the valve seat.

[0015] After adopting the above structure, the utility model has the following advantages:

[0016] The liquid of the present invention enters the spherical valve core through the connecting hole and first impacts the movable plate. The inwardly arcuate buffer groove on the movable plate can change the flow direction of the liquid and reduce the impact force, thereby protecting the spherical valve core, reducing the impact force and vibration of the spherical valve core, ensuring the normal operation of the improved eccentric rotary valve of the present invention and improving its service life. After being blocked by the buffer protrusion, the liquid can pass through quickly and it can be ensured that the liquid will not produce a huge impact force on the valve body, which is used to weaken and offset the vibration caused by the rapid flow of the fluid impacting the spherical valve core, ensuring the normal operation of the improved eccentric rotary valve of the present invention and improving its service life.

[0017] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a structural schematic diagram of the utility model.

[0020] Figure 2 It is a cross-sectional view of the utility model.

[0021] Figure 3 It is a structural schematic diagram of the valve core assembly of the utility model.

[0022] As shown in the figure: 1. Valve body; 2. Valve seat; 3. Valve core assembly; 301. Spherical valve core; 302. Medium connecting groove; 4. Medium inlet channel; 5. Medium outlet channel; 6. Connecting hole; 7. Adjusting device; 701. Movable plate; 702. Movable groove; 703. Adjusting spring; 704. Buffer groove; 8. Buffer protrusion; 9. Valve stem. DETAILED DESCRIPTION

[0023] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0024] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] The utility model is further described in detail below in conjunction with the full text.

[0026] Combined with Figure 1-Figure 3 A modified eccentric rotary valve comprises a valve body 1 and a valve stem 9 rotating in the valve body 1, a medium inlet channel 4 and a medium outlet channel 5 are arranged on the valve body 1, and also comprises a valve seat 2 and a valve core assembly 3 in the valve body 1, the valve core assembly 3 comprises a spherical valve core 301 arranged at the lower end of the valve stem 9, the spherical valve core 301 can rotate in the valve seat 2 through the valve stem 9, a medium communicating groove 302 is provided on one side of the spherical valve core 301, a communicating hole 6 is provided on the lower side of one end of the valve seat 2 close to the medium inlet channel 4, liquid enters from the medium inlet channel 4, the valve stem 9 rotates, driving the spherical valve core 301 to rotate in the valve seat 2, so that the liquid enters the spherical valve core 301 through the communicating hole 6, is regulated by the regulating device 7, and then is discharged from the medium outlet channel 5.

[0027] When the utility model is implemented, Figure 2 and Figure 3 As shown. An automatically adjustable regulating device 7 is installed in the spherical valve core 301, and the regulating device 7 includes a movable plate 701. A movable groove 702 is provided in the spherical valve core 301 to cooperate with the movable plate 701 to move. An adjusting spring 703 is installed between the movable plate 701 and the movable groove 702. A buffer groove 704 is provided at one end of the movable plate 701 away from the adjusting spring 703. The regulating device 7 is subjected to the impact force of the liquid, and can automatically adjust the distance of the movable plate 701 through the adjusting spring 703, thereby opening or shortening the channel, improving the service life of the valve body 1, improving the overall stability, weakening and offsetting the vibration caused by the rapid flow of the fluid impacting the spherical valve core 301, ensuring the normal operation of the improved eccentric rotary valve of the present invention, and improving the service life.

[0028] The medium inlet channel 4 and the medium outlet channel 5 are arranged alternately up and down.

[0029] like Figure 3 As shown, a buffer protrusion 8 is installed at one end of the spherical valve core 301 close to the medium outlet channel 5. The liquid enters the spherical valve core 301 through the connecting hole 6, and after being blocked by the buffer protrusion 8, it enters the medium outlet channel 5 again. The buffer protrusion 8 is set to have a thickness that decreases as it is farther away from the spherical valve core 301, and has an oblique wave structure. When the liquid passes through quickly, it can ensure that the liquid will not generate a huge impact force on the valve body 1.

[0030] One end of the movable plate 701 away from the adjusting spring 703 is an inwardly arcuate buffer groove 704. The liquid enters the spherical valve core 301 through the connecting hole 6 and first impacts the movable plate 701. The inwardly arcuate buffer groove 704 on the movable plate 701 can change the flow direction of the liquid and reduce the impact force, thereby protecting the spherical valve core 301, reducing the impact force and vibration of the spherical valve core 301, ensuring the normal operation of the improved eccentric rotary valve of the present invention and prolonging its service life.

[0031] A sealing layer is installed on the inner wall of the valve seat 2 .

[0032] The working principle of this utility model:

[0033] The liquid enters from the medium inlet channel 4, and the valve stem 9 rotates, driving the spherical valve core 301 to rotate in the valve seat 2, so that the liquid enters the spherical valve core 301 through the connecting hole 6. The regulating device 7 is subjected to the impact force of the liquid and can automatically adjust the distance of the movable plate 701 by adjusting the spring 703, thereby opening or shortening the channel, and then the medium is discharged from the medium outlet channel 5, thereby increasing the service life of the valve body 1, improving the overall stability, weakening and offsetting the vibration caused by the rapid flow of the fluid impacting the spherical valve core 301, ensuring the normal operation of the improved eccentric rotary valve of the present invention, and increasing the service life.

[0034] The above describes the utility model and its implementation methods, which is not restrictive. What is shown in the full text is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.

Claims

1. An improved eccentric rotary valve, comprising a valve body (1) and a valve stem (9) rotating in the valve body (1), wherein the valve body (1) is provided with a medium inlet channel (4) and a medium outlet channel (5), characterized in that: It also includes a valve seat (2) and a valve core assembly (3) in the valve body (1). The valve core assembly (3) comprises a spherical valve core (301) arranged at the lower end of the valve stem (9); the spherical valve core (301) can rotate in the valve seat (2) through the valve stem (9); a medium communication groove (302) is provided on one side of the spherical valve core (301); and a communication hole (6) is provided on the lower side of one end of the valve seat (2) close to the medium inlet channel (4); An automatically adjustable regulating device (7) is installed in the spherical valve core (301).

2. The improved eccentric rotary valve according to claim 1, characterized in that: The medium inlet channel (4) and the medium outlet channel (5) are arranged in an up-and-down staggered manner.

3. The improved eccentric rotary valve according to claim 1, characterized in that: The regulating device (7) comprises a movable plate (701), a movable groove (702) cooperating with the movable plate (701) to move is provided in the spherical valve core (301), and an regulating spring (703) is installed between the movable plate (701) and the movable groove (702).

4. The improved eccentric rotary valve according to claim 3, characterized in that: A buffer groove (704) is formed at one end of the movable plate (701) away from the adjustment spring (703).

5. The improved eccentric rotary valve according to claim 1, characterized in that: A buffer protrusion (8) is installed on one end of the spherical valve core (301) close to the medium outlet channel (5).

6. The improved eccentric rotary valve according to claim 5, characterized in that: The buffer protrusion (8) is configured such that the thickness thereof decreases as it is further away from the spherical valve core (301).

7. The improved eccentric rotary valve according to claim 1, characterized in that: A sealing layer is installed on the inner wall of the valve seat (2).

Images