CN214331529U

CN214331529U - An N10 flow regulating and pressure regulating valve

Info

Publication number: CN214331529U
Application number: CN202120551099.XU
Authority: CN
Inventors: 吴进武; 刘杰; 陈海军
Original assignee: Shanghai East Well Valve Co ltd
Current assignee: Shanghai East Well Valve Co ltd
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2021-10-01
Anticipated expiration: 2031-03-17

Abstract

The utility model discloses an N10 flow regulating and pressure regulating valve, which comprises a handwheel, a valve stem, a packing gland, a sealing ring and a valve stem nut. A valve stem is fixedly installed under the handwheel, and the upper half of the valve stem is A bracket is arranged on the outside of the valve stem, and a packing gland is installed in the middle of the valve stem. The inside of the packing gland is filled with packing, and the outside of the packing gland and the packing is provided with a valve cover, and the bottom of the valve cover is installed with a seal A squirrel cage is installed under the valve cover, the sealing ring is located in the middle of the valve cover and the squirrel cage, and a pressure plate is installed inside the squirrel cage, and a thrust washer is arranged under the pressure plate, and the valve stem The bottom end of the cage is movably installed with a latch, and a first O-ring is fixed on the inner wall in the middle of the squirrel cage. The N10 flow regulating and pressure regulating valve can meet the requirements of different pressures and calibers through different combinations of standard accessories, and at the same time reduce the cost of industrialized mass production, and is also extremely convenient for later maintenance.

Description

N10 flow-regulating pressure-regulating valve

Technical Field

The utility model relates to the technical field of valves, specifically a N10 flow regulating air-vent valve.

Background

The regulating valve is a large variety of valves, including single-seat valves, double-seat valves, sleeve valves, butterfly valves, eccentric rotary valves, piston-type flow-regulating pressure regulating valves, etc., however, some existing valves have problems in use, such as:

1. most regulating valves have no energy dissipation function, are easy to generate cavitation damage under the condition of high pressure difference, and only can adopt precious metal as a valve body, so that the cost is increased;

2. most of the regulating valve flow KV curves are in equal percentage, square root and parabola shapes, and the curves cause difficulty increase and poor precision in regulating and controlling;

3. the piston type flow regulating valve is high in adjusting precision and can also be used for energy, but the piston type flow regulating valve is multiple in parts, high in processing difficulty, high in assembling difficulty and high in cost.

We have therefore proposed an N10 flow regulating pressure regulating valve in order to solve the problems set out above.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a N10 flow regulating air-vent valve to solve some valves on the existing market that above-mentioned background art provided, when using, the processing degree of difficulty is high, and the equipment degree of difficulty is high, problem with high costs.

In order to achieve the above object, the utility model provides a following technical scheme: an N10 flow-regulating pressure-regulating valve comprises a hand wheel, a valve rod, a packing gland, a sealing ring and a valve rod nut, wherein the valve rod is fixedly arranged below the hand wheel, a support is arranged on the outer side of the upper half part of the valve rod, the packing gland is arranged in the middle of the valve rod, packing is filled in the packing gland, valve covers are arranged on the outer sides of the packing gland and the packing, the sealing ring is arranged at the bottom of the valve cover, a squirrel cage is arranged below the valve cover, the sealing ring is positioned between the valve cover and the squirrel cage, a pressing plate is arranged in the squirrel cage, a thrust gasket is arranged below the pressing plate, a plug pin is movably arranged at the bottom end of the valve rod, a first O-shaped ring is fixedly arranged on the inner wall in the middle of the squirrel cage, a piston is arranged in the first O-shaped ring, a main sealing ring is arranged below the piston, and valve bodies are arranged on the outer sides of the piston and the main sealing ring, and a second O-shaped ring is arranged between the valve body and the valve cover, and a valve rod nut is movably arranged between the valve rod and the support.

Preferably, the support and the valve cover are connected through bolts, and the support is detachably mounted through a valve rod nut and a valve rod.

Preferably, the central axis of the support and the central axis of the valve cover are on the same straight line, and the valve cover and the valve body are fixed through bolts.

Preferably, the squirrel cage is positioned in the valve body, the outer wall of the upper half part of the squirrel cage is mutually attached to the inner wall of the valve body, and the lower part of the squirrel cage is porous.

Preferably, the upper surface of the thrust washer is flush with the upper surface of the piston, and the central axes of the thrust washer and the bolt are on the same straight line.

Preferably, the piston forms a clamping structure with the valve rod through the bolt, and the piston forms a rotating structure with the valve body through the valve rod.

Compared with the prior art, the beneficial effects of the utility model are that: the N10 flow-regulating pressure-regulating valve:

(1) the device achieves the purpose of adjusting the flow and the pressure by the decreasing of the cross-sectional area of the flow passage. The N10 flow regulating pressure regulating valve can reach the annular water flow section at any operation position, thereby realizing linear regulation in a wide range. The cage has holes in different shapes, and water flow is throttled into several high speed fluid flows around the cage and collided with each other in the flow passage to convert pressure energy. In the water flow movement process, bubbles are generated and broken in the middle of water, so that valve accessories are not damaged, and the safety in use is ensured;

(2) the main fittings are standardized, the requirements of different pressures and calibers can be met through different combinations of standard fittings, the manufacturing cost is reduced in the industrial batch production process, the later maintenance is very convenient, the size, the quantity and the shape of the drilled holes of the mouse cage can be changed to adapt to different flow and pressure adjusting ranges, the valve opening degree is in a reasonable range all the time, the cavitation erosion eliminating function is realized, the valve body is prevented from being damaged, the device is suitable for valves with straight-through structures and valves with angle structures, and the application range of the device is widened.

Drawings

Fig. 1 is a schematic cross-sectional structural view of an angle type N10 flow-regulating pressure-regulating valve of the present invention;

fig. 2 is a schematic structural view of a straight-through N10 flow-regulating pressure-regulating valve of the present invention.

In the figure: 1. a hand wheel; 2. a valve stem; 3. a support; 4. a packing gland; 5. a filler; 6. a valve cover; 7. a seal ring; 8. a mouse cage; 9. pressing a plate; 10. a thrust washer; 11. a bolt; 12. a first O-ring; 13. a piston; 14. a valve body; 15. a primary seal ring; 16. a second O-ring; 17. a valve stem nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: an N10 flow-regulating pressure-regulating valve comprises a hand wheel 1, a valve rod 2, a support 3, a packing gland 4, packing 5, a valve cover 6, a sealing ring 7, a squirrel cage 8, a pressure plate 9, a thrust gasket 10, a bolt 11, a first O-shaped ring 12, a piston 13, a valve body 14, a main sealing ring 15, a second O-shaped ring 16 and a valve rod nut 17, wherein the valve rod 2 is fixedly arranged below the hand wheel 1, the support 3 is arranged on the outer side of the upper half part of the valve rod 2, the packing gland 4 is arranged in the middle of the valve rod 2, the packing 5 is filled in the packing gland 4, the valve covers 6 are respectively arranged on the outer sides of the packing gland 4 and the packing 5, the sealing ring 7 is arranged at the bottom of the valve cover 6, the squirrel cage 8 is arranged below the valve cover 6, the sealing ring 7 is positioned between the valve cover 6 and the squirrel cage 8, the pressure plate 9 is arranged inside the squirrel cage 8, the thrust gasket 10 is arranged below the pressure plate 9, the bottom end of the valve rod 2 is movably provided with a plug pin 11, a first O-shaped ring 12 is fixedly arranged on the inner wall in the middle of the squirrel cage 8, a piston 13 is arranged inside the first O-shaped ring 12, a main sealing ring 15 is arranged below the piston 13, a valve body 14 is arranged on the outer sides of the piston 13 and the main sealing ring 15, a second O-shaped ring 16 is arranged between the valve body 14 and the valve cover 6, and a valve rod nut 17 is movably arranged between the valve rod 2 and the support 3.

The connection mode between support 3 and valve gap 6 is bolted connection, and support 3 constitutes through valve-stem nut 17 and valve rod 2 between dismantlement mounting structure, can come to carry out the dismouting to the device wholly through valve-stem nut 17 on the device, and convenient follow-up overhauls inside.

The axis of support 3 is on same straight line with the axis of valve gap 6, and passes through the bolt fastening between valve gap 6 and the valve body 14, has guaranteed the holistic stability of device, has promoted the use and has made the security.

The squirrel cage 8 is located the inside of valve body 14, and laminates each other between the outer wall of squirrel cage 8 upper half and the inner wall of valve body 14 to the below of squirrel cage 8 is poroid, utilizes the punchhole on the squirrel cage 8 to let fluid pass through, can adapt to different flow and pressure control range through the change of drilling size, quantity, shape simultaneously.

The upper surface of thrust gasket 10 and the upper surface parallel and level of piston 13, and thrust gasket 10 and the axis of bolt 11 are on same straight line, and follow-up can fix piston 13 and valve rod 2 through bolt 11, has promoted the practicality of device.

Piston 13 constitutes block structure through between bolt 11 and the valve rod 2, and piston 13 constitutes revolution mechanic through between valve rod 2 and the valve body 14, can utilize bolt 11 to make the rotation of valve rod 2 can drive piston 13 and rotate.

The working principle is as follows: when the N10 flow regulating pressure regulating valve is used, as shown in fig. 1-2, an operator rotates the hand wheel 1, the valve rod 2 rotates along with the rotation of the hand wheel 1 because the valve rod 2 and the hand wheel 1 are connected together, the rotation of the valve rod 2 is converted into vertical linear motion because the valve rod nut 17 and the bracket 3 are fixed, the valve rod 2 is connected with the piston 13 through the pressure plate 9, the thrust washer 10 and the bolt 11, and the piston 13 moves vertically along with the vertical motion of the valve rod 2. The hand wheel 1 rotates clockwise, the piston 13 contacts with the main seal ring 15, and then the valve is closed; the hand wheel 1 rotates anticlockwise, the pressing plate 9 is in contact with the valve cover 6, and the valve is fully opened. The piston 13 is positioned between the opening position and the closing position, the size of the exposed area of the hole of the squirrel cage 8 determines parameters for adjusting flow and pressure, water flow is throttled into a plurality of strands of high-speed fluid through the periphery of the squirrel cage 8, the high-speed fluid flows to the center of a flow channel along the radial direction and flows to mutually collide with each other to convert pressure energy, and in the moving process of the water flow, bubbles are generated and broken in the middle of water, so that valve accessories cannot be damaged;

as shown in figure 2, the N10 flow regulating pressure regulating valve can reach annular water flow section in any operation position through the decreasing of the cross section area of the flow passage to regulate flow and pressure, so as to realize linear regulation in a wide range. The inside of the valve is provided with a sliding piston 13, and the operating device changes the rotary motion into the linear motion of the piston 13 through a valve rod nut 17, thereby achieving the functions of opening and closing and adjusting the valve.

The above is the operation of the whole device, and the details which are not described in detail in this specification are well known to those skilled in the art.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. An N10 flow regulating and pressure regulating valve, comprising a handwheel (1), a valve stem (2), a packing gland (4), a sealing ring (7) and a valve stem nut (17), characterized in that: the A valve stem (2) is fixedly installed under the handwheel (1), a bracket (3) is arranged on the outer side of the upper half of the valve stem (2), and a packing gland (4) is installed in the middle of the valve stem (2). , the packing gland (4) is filled with packing (5), and the outside of the packing gland (4) and packing (5) is provided with a valve cover (6), and the bottom of the valve cover (6) is installed There is a sealing ring (7), a squirrel cage (8) is installed under the valve cover (6), the sealing ring (7) is located in the middle of the valve cover (6) and the squirrel cage (8), and the squirrel cage ( 8) A pressure plate (9) is installed inside, and a thrust washer (10) is arranged below the pressure plate (9), a pin (11) is movably installed at the bottom end of the valve rod (2), and the squirrel cage (8) A first O-ring (12) is fixedly arranged on the inner wall of the middle, and a piston (13) is arranged inside the first O-ring (12), and a main sealing ring (13) is installed below the piston (13). 15), a valve body (14) is provided on the outside of the piston (13) and the main sealing ring (15), and a second O-ring (16) is provided between the valve body (14) and the valve cover (6). A valve stem nut (17) is movably installed between the valve stem (2) and the bracket (3).

2. An N10 flow regulating and pressure regulating valve according to claim 1, characterized in that: the connection between the bracket (3) and the valve cover (6) is a bolt connection, and the bracket (3) passes through the valve A disassembly and installation structure is formed between the rod nut (17) and the valve rod (2).

3. An N10 flow regulating and pressure regulating valve according to claim 1, characterized in that: the central axis of the bracket (3) and the central axis of the valve cover (6) are on the same straight line, and the valve cover ( 6) and the valve body (14) are fixed by bolts.

4. An N10 flow regulating and pressure regulating valve according to claim 1, characterized in that: the squirrel cage (8) is located inside the valve body (14), and the outer wall of the upper part of the squirrel cage (8) is connected to the The inner walls of the valve body (14) adhere to each other, and the lower part of the squirrel cage (8) is porous.

5. An N10 flow regulating and pressure regulating valve according to claim 1, characterized in that: the upper surface of the thrust washer (10) is flush with the upper surface of the piston (13), and the thrust washer (10) is flush with the upper surface of the piston (13). (10) and the central axis of the latch (11) are on the same straight line.

6. An N10 flow regulating and pressure regulating valve according to claim 1, characterized in that: the piston (13) forms an engaging structure through the plug (11) and the valve stem (2), and the piston (13) ) forms a rotating structure between the valve stem (2) and the valve body (14).