CN204729637U - A kind of low noise research of flow regulating valve of sleeve type - Google Patents

Abstract

The utility model discloses a low-noise sleeve type flow regulating valve, which mainly includes a valve body, a valve seat, a valve sleeve, a valve cover and a power assembly; the valve seat is arranged in the inner cavity of the valve body, and the A valve sleeve is connected between the valve seat and the valve port on the top of the valve body, and the side wall at the lower end of the valve sleeve is provided with a plurality of flow regulating holes connected with the inlet cavity and the outlet cavity of the valve body; the valve cover Set at the top valve port, the valve cover is installed with a valve stem, the lower end of the valve stem is connected with the valve core inside the valve sleeve, the upper end of the valve stem is connected with the power assembly, and the valve core is driven to move up and down by the power assembly , Change the flow area of the valve sleeve, so as to realize the regulation of the flow. The valve sleeve of the utility model adopts a porous sleeve structure, which reduces the working noise, and at the same time realizes the precise control of the flow rate through the reasonable distribution of the flow regulating holes. The utility model is suitable for various operating environments, and the operation is simple and convenient.

Description

A low-noise sleeve-type flow regulating valve

technical field

The utility model belongs to the field of flow regulating valves, in particular to a low-noise sleeve type flow regulating valve.

Background technique

In the industrial automation fluid control system, the regulating valve is one of the widely used fluid control equipment, which is used to connect or cut off the medium. There are many types of regulating valves, mainly single-seat valves, double-seat valves, angle valves, sleeve valves, eccentric rotary valves, butterfly valves and ball valves.

When the control valve is working, the fluid flows through the orifice of the control valve. Due to the sharp change in the area of the orifice, the flow area is reduced, the flow rate increases, and the pressure drops, which is prone to cavitation and noise; When the difference is high, it is easy to produce cavitation phenomenon, and in serious cases, it will cause equipment accidents, and there is a great potential safety hazard. At present, the traditional control valve generally has the problem of high noise under large pressure difference, and is not suitable for applications with strict requirements on noise. Therefore, there is an urgent research demand and application value to develop a flow regulating valve with low noise characteristics.

Utility model content

In view of the above defects or improvement needs of the prior art, the utility model provides a low-noise sleeve-type flow regulating valve, wherein the valve sleeve structure is designed as a porous sleeve structure, and the round holes on the valve sleeve are rationally arranged. Correspondingly, it can effectively solve the problem of high working noise of the existing control valve, and at the same time, it also has the advantage of high flow control accuracy; in addition, the utility model also utilizes the balance small hole on the valve core to reduce the driving force of the valve core, It is beneficial to the energy saving of the system. At the same time, the utility model also has multiple operation modes, which can be adapted to various operating environments, and the operation is simple and convenient.

In order to achieve the above purpose, the utility model proposes a low-noise sleeve-type flow regulating valve, which is characterized in that the flow regulating valve includes a valve body, a regulating valve assembly and a power assembly, wherein:

The two ends of the valve body are respectively provided with an inlet cavity and an outlet cavity, and the top is provided with a top valve port; the regulating valve assembly is inserted into the inner cavity of the valve body through the top valve port, and is fixedly connected The valve cover at the top valve port is sealed, and the regulating valve assembly includes a valve seat and a valve sleeve in sequence from bottom to top; a plurality of flow ports communicating with the inlet cavity and the outlet cavity are provided on the circumferential surface of the lower end of the valve sleeve. An adjustment hole; a valve core that can slide up and down is arranged inside the valve sleeve, and the top of the valve core is connected with the lower end of the valve stem; the upper end of the valve stem is connected with the power assembly.

Further preferably, the power assembly includes an electric cylinder, a clutch and a hand wheel, wherein the electric cylinder is connected to the upper end of the valve stem; the clutch is divided into upper and lower parts, wherein the lower part is connected to the upper end of the electric cylinder The upper part is fixedly connected with the protective cover; the handwheel is fixedly connected with the protective cover; the shell of the electric cylinder is fixedly connected with plug pins, and the upper part of the clutch is provided with The round hole matched with the plug pin, by inserting the plug pin into the round hole, prevents the hand wheel from rotating.

Further preferably, the plurality of flow adjustment holes are vertically arranged along the circumferential surface of the lower end of the valve sleeve, and the diameter of each flow adjustment hole is 6 mm; in addition, these flow adjustment holes are divided into 24 rows, and each row The number is four.

Further preferably, the distance between the centers of the flow regulating holes in the same row is 10 mm, and the distance between the centers of the flow regulating holes in two adjacent rows is 5 mm; and the distance between the flow regulating holes in the bottommost row is the The distance between the bottom surface of the valve sleeve is 7mm.

Further preferably, the gap fit between the valve sleeve and the valve core is sealed with a gray ring.

Further preferably, the electric cylinder is fixedly connected to the valve cover by screws, and sealed by a Ster seal.

Further preferably, a balance hole is opened on the valve core to balance the pressure of the upper and lower chambers of the valve core.

Generally speaking, compared with the prior art, the above technical solution conceived by the utility model mainly has the following technical advantages:

1. The valve sleeve of the utility model adopts a porous sleeve structure, and by rationally arranging the flow regulating holes on the valve sleeve, the flow area of the flow regulating valve changes approximately linearly with the opening of the valve core, and the flow rate is realized. Precise control and reduced working noise.

2. The utility model integrates the push rod and the valve rod of the electric cylinder, reduces the size of the flow regulating valve, makes the flow control operation convenient, and opens a balance hole on the valve core to make the valve core have two cavities up and down. The pressure balance reduces the driving force of the spool, which is beneficial to the energy saving of the system.

3. The flow regulating valve of the utility model has three operation modes: remote electric control, local electric control, and local emergency manual control, which can adapt to various operating environments and is simple and convenient to operate.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a schematic diagram of a control cabinet panel of the present utility model;

Fig. 3 is a structural schematic diagram of the valve sleeve of the present invention.

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute conflicts with each other.

A low-noise sleeve-type flow regulating valve of the present invention, as shown in Figure 1, mainly includes a valve body 1, a regulating valve assembly and a power assembly, wherein: the two ends of the valve body 1 are respectively provided with an inlet and a The top of the outlet cavity is provided with a top valve port; the regulating valve assembly is inserted into the inner cavity of the valve body 1 through the top valve port, and is sealed by a valve cover 10 fixedly connected to the top valve port, The regulating valve assembly includes a valve seat 2 and a valve sleeve 3 sequentially from bottom to top, the upper end surface of the valve seat 2 is sequentially pressed by the valve sleeve 3 and the valve cover 11; A flow regulating hole 19 communicating with the inlet cavity and the outlet cavity; the inside of the valve sleeve 3 is provided with a spool 15 that can slide up and down, and the top of the spool 15 is connected with the lower end of the valve stem 13; The upper end of the valve rod 13 is connected with the power assembly.

The power assembly includes an electric cylinder 9, a clutch 7, and a hand wheel 5, wherein the electric cylinder 9 is connected to the upper end of the valve stem 13; the electromagnetic clutch 7 is installed in the electromagnetic clutch protective cover 6 and is divided into upper and lower Two parts, wherein, the lower part is fixedly connected with the electric cylinder 9, the upper part is fixedly connected with the protective cover 6, the upper and lower parts of the electromagnetic clutch 7 are energized and separated, and the power is cut off; the hand wheel 5 is fixedly connected to the On the protective cover 6; the housing of the electric cylinder 9 is fixedly connected with plug pins 8 by screws, and a row of circles matching the plug pins 8 are evenly distributed in the circumferential direction of the upper part of the clutch 7. Hole, by inserting the plug pin 8 into the circular hole, to prevent the hand wheel 5 from rotating.

The low-noise sleeve-type flow regulating valve is also provided with a control cabinet 4, and the control cabinet 4 is fixedly connected to the housing of the electric cylinder 9 by screws. The control cabinet 4 is equipped with a stabilized power supply, an electric cylinder driver and a control circuit board. On the panel of the control cabinet 4, an operation mode selection knob 16, a flow adjustment knob 18 and an electronic tube display screen 17 are distributed. The circuit modules in the control cabinet 4 pass through cables. Connect with electric cylinder 9 and remote console respectively.

The spool 15 is in clearance fit with the valve sleeve 3 and is sealed with a gray ring 14. The spool 15 is fixedly connected to the valve stem 13 through a nut, and the valve cover 11 is fixedly connected to the valve body 1 through screws, with an O-shaped seal in the middle. The ring 12 is sealed, the electric cylinder 9 is fixedly connected to the valve cover 11 by screws, and the middle is sealed by a step seal 10 .

In the utility model, the valve rod 13 and the push rod of the electric cylinder 9 are designed into an integrated structure and the valve rod 13 is directly used as the power push rod of the electric cylinder, thereby reducing the size of the flow regulating valve. The valve sleeve 3 of the utility model adopts a porous sleeve structure, and the distribution of round holes on the valve sleeve 3 is shown in Figure 3. Holes 19 are formed, the center distance d1=10mm between the round holes 19 of the same row, the center of circles of two adjacent rows of holes are staggered by the distance of d2=5mm, the distance between the bottom row of round holes 19 at the bottom of the valve sleeve 3 is at the bottom of the valve sleeve 3 The distance d3=7mm. The utility model can effectively reduce the working noise by passing the round holes on the valve sleeve through the above-mentioned arrangement and design calculation, and realizes that the flow area of the flow regulating valve changes approximately linearly with the opening of the valve core, which is beneficial to the realization of linear flow characteristic. The utility model has a small balance hole 20 on the spool 15 to balance the pressure of the upper and lower cavities of the spool 15, reduces the driving force of the spool 15, and is beneficial to energy saving of the system.

In addition, the flow regulating valve of the utility model can realize three operation modes: remote electric control mode, local electric control mode, and local emergency manual control mode, which is suitable for various operating environments and is simple and convenient to operate.

The principle of the utility model is as follows: in order to prevent the staff from operating the hand wheel 5 by mistake, usually, insert the plug pin 8 into the circular hole in the circumferential direction of the upper part of the electromagnetic clutch 7, and at this time, the upper part of the electromagnetic clutch 7 is inserted and pulled out by the pin 8 locked, because the upper part of electromagnetic clutch 7 is connected with protective cover 6, and protective cover 6 links to each other with handwheel 5 again, so handwheel 5 also can not rotate.

When the operation mode selection knob 16 is turned to the remote electric control mode in the right position, the flow regulating valve is in the remote electric control mode. At this time, the control cabinet 4, the electromagnetic clutch 7 and the electric cylinder 9 are all in the energized state, and the electromagnetic clutch 7 is divided into upper and lower parts. Separated, the locking of the hand wheel 5 does not affect the movement of the electric cylinder 9, the remote console input command flow signal is input to the control cabinet 4 through the connecting cable, and after being processed by the circuit module in the control cabinet 4, the output control signal is transmitted to the The electric cylinder 9 controls the electric cylinder 9 to drive the spool 15 to move up and down to change the outlet flow of the regulating valve. At the same time, the feedback signal of the outlet flow of the regulating valve is connected to the control cabinet 4 through the cable to form a closed loop with the command flow signal, thereby realizing the flow of the regulating valve. precise control.

When the operation mode selection knob 16 is turned to the local electric control mode in the middle position, the flow regulating valve is in the local electric control mode. At this time, the control cabinet 4, the electromagnetic clutch 7 and the electric cylinder 9 are all in the power-on state, and the electromagnetic clutch 7 is divided into upper and lower parts. Separated, the locking of the hand wheel 5 does not affect the movement of the electric cylinder 9, the command flow signal is adjusted through the flow adjustment knob 18, the command flow signal is processed by the circuit module in the control cabinet 4, and then the output control signal is transmitted to the The electric cylinder 9 controls the electric cylinder 9 to drive the spool 15 to move up and down to change the outlet flow of the regulating valve, and at the same time connect the feedback signal of the outlet flow of the regulating valve to the control cabinet 4 to form a closed loop with the command flow signal, thereby realizing the accurate flow of the regulating valve control.

When the operation mode selection knob 16 is turned to the local emergency manual control mode in the left position, the flow regulating valve is in the local emergency manual control mode. At this time, the control cabinet 4, the electromagnetic clutch 7 and the electric cylinder 9 are all in the power-off state, and the electromagnetic clutch 7 The upper and lower parts are sucked together, and then the plug-in pin 8 is pulled out from the round hole on the upper part of the electromagnetic clutch 7 to release the locked state of the handwheel 5. By turning the handwheel 5, the electric cylinder 9 is driven to move, thereby driving the valve core 15 Move up and down to change the flow area, so as to realize the function of flow regulation.

Those skilled in the art can easily understand that the above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and modifications made within the spirit and principles of the utility model Improvements and the like should all be included within the protection scope of the present utility model.

Claims (7)

1. a low noise research of flow regulating valve of sleeve type, is characterized in that, this flow control valve comprises valve body (1), valve assembly and Power Component, wherein:

The two ends of this valve body (1) offer snout cavity and outlet plenum respectively, and its top offers top valve port; Described valve assembly inserts in the inner chamber of described valve body (1) by described top valve port, and sealed by the valve gap (11) being fixed on described top valve port, this valve assembly comprises valve seat (2) and valve pocket (3) from the bottom to top successively; The circumferential surface of described valve pocket (3) lower end offers the flow regulating orifices (19) that multiple and described snout cavity is connected with outlet plenum; The inside of described valve pocket (3) is provided with the spool that can slide up and down (15), and the top of this spool (15) is connected with the lower end of valve rod (13); The upper end of described valve rod (13) is connected with described Power Component.

2. a kind of low noise research of flow regulating valve of sleeve type as claimed in claim 1, it is characterized in that, described Power Component comprises electric cylinder (9), clutch (7) and handwheel (5), wherein, described electric cylinder (9) is connected with the upper end of described valve rod (13); Described clutch (7) is divided into upper and lower two-part, and wherein, lower part and described electric cylinder (9) are connected, and upper part and protective housing (6) are connected; Described handwheel (5) is connected on this protective housing (6); The housing of described electric cylinder (9) is fixed with plug pin (8), and described clutch (7) upper part be circumferentially provided with the circular hole matched with this plug pin (8), by described plug pin (8) is inserted in described circular hole, rotate to prevent described handwheel (5).

3. a kind of low noise research of flow regulating valve of sleeve type as claimed in claim 1 or 2, it is characterized in that, described multiple flow regulating orifices (19) is along the circumferential surface vertical array of described valve pocket (3) lower end, and the diameter of each flow regulating orifices is 6mm; In addition, these flow regulating orifices (19) are divided into 24 row, and the quantity often arranged is four.

4. a kind of low noise research of flow regulating valve of sleeve type as claimed in claim 3, it is characterized in that, distance of center circle between the flow regulating orifices (19) being positioned at same row is 10mm, and distance is staggered for 5mm in the centers of circle of the adjacent two described flow regulating orifices of row (19); And the described flow regulating orifices (19) that lowermost end one is arranged is 7mm apart from the distance of described valve pocket (3) bottom surface.

5. a kind of low noise research of flow regulating valve of sleeve type as claimed in claim 4, is characterized in that, Spielpassung between described valve pocket (3) and described spool (15), and seals with Glais ring (14).

6. a kind of low noise research of flow regulating valve of sleeve type as claimed in claim 2, is characterized in that, described electric cylinder (9) is connected on described valve gap (11) by screw, and by this special envelope (10) sealing.

7. a kind of low noise research of flow regulating valve of sleeve type as claimed in claim 6, is characterized in that, described spool (15) offers balance aperture (20), to make the two cavity pressure balances up and down of described spool (15).