CN102359625A

CN102359625A - Flexible sealed multifunctional pump station valve

Info

Publication number: CN102359625A
Application number: CN2011103187340A
Authority: CN
Inventors: 石景东; 鲁智礼; 蒋蒙宾; 丁立杰; 郑志宏
Original assignee: QINGDAO YURENSHUI EQUIPMENT NEW TECHNOLOGY Co Ltd
Current assignee: QINGDAO YURENSHUI EQUIPMENT NEW TECHNOLOGY Co Ltd
Priority date: 2011-10-19
Filing date: 2011-10-19
Publication date: 2012-02-22
Anticipated expiration: 2031-10-19
Also published as: CN102359625B

Abstract

The invention relates to the technical field of pump valve manufacturing, in particular to a flexible sealed multifunctional pump station pump. A valve shaft with a penetrative structure is communicated to a rigid shell from top to bottom; the upper side end and the lower side end of the rigid shell with a spherical structure are respectively provided with an upper short pipe, a front guide frame and a rear guide frame, and a lower short pipe; a bulge at the side of the rigid shell is provided with a nitrogen charging device; the inner side of the rigid shell is provided with a pressurized nitrogen layer; the inner side of the pressurized nitrogen layer is provided with a nylon reinforced rubber layer; the lateral edge of a flexible valve with a bowl-shaped structure is adhered to the inner side of the nylon reinforced rubber layer in an extending way; the nylon reinforced rubber layer is fixed between flanges of the front guide frame and the rear guide frame and a flange of the rigid shell; and the inner wall of the flexible valve and the inner wall of the rigid shell form flexible surface seal with same curvature. The flexible sealed multifunctional pump station pump has the advantages of novel whole structure, safety and reliability, low manufacturing cost, long service life, large application range and capability of effectively preventing water hammering.

Description

A kind of flexible sealing formula multi purpose pumping station valve

Technical field:

The invention belongs to the pump valve preparing technical field, relate to the safety check that a kind of multi-functional pumping plant is used, particularly a kind of flexible sealing formula multi purpose pumping station valve.

Background technique:

In the technology and equipment of liquid transfer process, used exit of pump all need be installed safety check usually, for guaranteeing the security of operation of water pump, no matter is NBS figure or facility installation drawing, all requires every exit of pump that safety check is installed.Usually, the effect of safety check is that the protection pump motor is not burnt, when accidental shutdown or when having a power failure suddenly; If the uneasy loaded check valve of exit of pump; The pipeline medium flows backwards and will cause the water pump counter-rotating, and when speed reversal during greater than 1.1 times of positive rotary speeds, pump motor just burns easily.At present, the improvement and the development of the safety check that water pump is used are divided into several stages, and the development of safety check is exactly the technological continuous development of non-return and perfect; The phase I product structure is a Swing check valve, and it is simple in structure, can realize check function, but shortcoming is outstanding, and water hammer is serious; The product structure of second stage is Tiny Drag Slow Shut Check Valves and quick closing type safety check to have occurred to water hammer; Along with the continuous development of water hammer technology, get into the phase III, the stage of promptly taking as the leading factor with multifunctional water pump control valve; But no matter be which stage or safety check of any structure, all can not solve with the Huanghe valley is the safe operation problem under the high silt environment of representative; With the Huanghe water is example; The Yellow River is our mother river; The Yellow River comprise along the line drink, ten thousand of the thousands of one-tenth of pumping plant of agricultural, industrial water, its safety check that generally uses at present do not have a kind of can be ideally safe operation under such operating mode, cause operation difficulty, accident to take place frequently; All safety check that use at present in addition are rigid construction; No matter be Swing check valve the earliest, or Tiny Drag Slow Shut Check Valves, squelch type safety check, the multifunctional water pump control valve in leading market up till now again; All be rigid construction, rigid construction is the basic reason that produces water hammer.End is got up, and existing safety check is applied in the pump technology ubiquity, and structural principle simple, and water hammer is serious; Shortcomings such as fabricating cost is big, and safety in utilization is not enough particularly can not well be applied to contain solid or dirt husky more water quality environment or occasion; In addition; Existing safety check rigid construction is difficult to overcome its water hammer shortcoming, so the safety check that designs and make a kind of new structure that can overcome existing safety check shortcoming is imperative.

Summary of the invention:

The objective of the invention is to overcome the shortcoming that existing technology exists; Solve the serious technical barrier of water hammer of present rigid construction safety check from principle and structure, provide a kind of perfect structure and principle not only to prevent water hammer but also flexible sealing formula multi purpose pumping station valve or safety check that can safe operation in silt reliably.

To achieve these goals, the multi purpose pumping station valve that the present invention relates to adopts flexible structure, comprises stiff case, flexible valve, valve shaft three parts composition; The stiff case structure is divided into three layers, is rigidity bearing course, pressurising blanket of nitrogen and nylon reinforcing rubber layer from outside to inside successively, and the nylon reinforcing rubber layer can stretch, and the pressurising blanket of nitrogen is confirmed the pressure of inflated with nitrogen according to different operating modes; The flexible face sealing pair is made up of stiff case and flexible valve, and flexible valve can be stretched, and flexible valve has elasticity, can fold; Flexible valve is and the nylon reinforcing rubber layer of the stiff case bowl-shape nylon reinforcing rubber with curvature, and flexible valve is installed on the valve shaft, and the forward and backward leading truck of valve shaft through two ends is fixed in the stiff case in the road.

Agent structure of the present invention comprises valve shaft, preceding nut, nut shim, pressing plate pad, pressing plate, goes up short tube, preceding leading truck, stiff case, pressurising blanket of nitrogen, nitrogen charging device, nylon reinforcing rubber layer, back leading truck, following short tube, valve compressing tablet, valve nut, Returnning spring, pressure-bearing spring, pressure-bearing compression spring, back nut, Returnning spring pad and flexible valve; Gang up the valve shaft of formula structure and gang up stiff case and nested successively preceding nut, nut shim, pressing plate pad, pressing plate, flexible valve, valve compressing tablet, valve nut, Returnning spring, Returnning spring pad, pressure-bearing spring, pressure-bearing compression spring and the back nut of being shaped on from top to bottom; The stiff case of spherical structure two side ends up and down is shaped on short tube, preceding leading truck and back leading truck, following short tube respectively; The protruding place of the side of stiff case is shaped on nitrogen charging device; The inboard of stiff case is shaped on the pressurising blanket of nitrogen, and the inboard of pressurising blanket of nitrogen is shaped on the nylon reinforcing rubber layer; The inboard that is attached to the nylon reinforcing rubber layer is stretched at the avris place of the flexible valve of bowl structure; Stiff case and nylon reinforcing rubber layer are spherical structure; The curvature of flexible valve is identical with nylon reinforcing rubber layer curvature; The nylon reinforcing rubber layer of spherical structure is fixed between the flange of flange and stiff case of forward and backward leading truck; Forward and backward leading truck is fixed by upper and lower short tube and stiff case; Flexible valve is fixed on the valve shaft through valve compressing tablet on the pressing plate and valve nut, and valve shaft is fixed in through preceding leading truck and back leading truck in the middle of the runner, and the inwall of flexible valve and stiff case forms the flexible face sealing with curvature.

The multi purpose pumping station valve that the present invention relates to, when the flowing medium forward flow, when the valve shaft forward moved, flexible valve received the pressure medium curvature and increases, and flap is affixed to valve shaft, and the runner flow section increases; When the flowing medium reverse flow, the valve shaft reversing motion, the flexible valve resilience, the valve outer rim forms face seal with the nylon reinforcing rubber layer of the stiff case of same material, identical curvature, thereby blocks pipeline, and the restriction liquid passes through; Flexible valve and nylon reinforcing rubber layer produce resiliently deformable under the effect of medium back flow inertia and backflow static pressure when sealing the medium reverse flow, form the first road buffer function; The nylon reinforcing rubber layer is in the process of pressurized elongation, and the pressurising blanket of nitrogen of stiff case forms the second road buffer function; The twice buffering prevents that water hammer from taking place; In addition; Because the flexible face that flexible valve and nylon reinforcing rubber layer form sealing; Functional to the silt environmental sealing, add to compare and cancelled epicoele and pipeline control system with multifunctional water pump control valve, become in the silt environment can safe and reliable operation safety check or pumping plant valve.

The present invention compared with prior art, the one, prevent that thoroughly water hammer from taking place, owing to be full flexible structure; Calculate water hammer according to hydraulic formula and receive volume; Confirm the elongation of rubber wall and the volume of pressurising blanket of nitrogen, when the formation twice are received water hammer, utilize the quick closedown principle; The refluence speed of medium is controlled to minimum as far as possible, realize fundamentally avoiding water hammer; The 2nd, superior performance in the silt environment, the face seal that flexible structure forms is more suitable for the silt medium, has cancelled complicated Slow Close pilot line and the cavity of other safety check, and the alluvial of silt is to not influence of structural behaviour; The 3rd, loss of head is little, energy saving, since the flexible valve structure, deformable under pressure medium, with respect to rigid construction, resistance to water-flow is little, and it is streamlined that runner is, and more approaches fluid motion; The 4th, application is extensive, is applicable to the incident exit of pump of any pumping plant water hammer, especially is the silt water conveyance conduit of representative with the Huanghe valley, and not only anti-water hammer but also anti-silt are the safety check of a kind of ability safe operation; Its general structure is novel, and principle is simple, and is safe and reliable, low cost of manufacture, and long service life, accommodation is big, can effectively prevent water hammer.

Description of drawings:

Fig. 1 is an overall structure principle schematic of the present invention.

Fig. 2 faces the structural principle schematic representation for upper and lower short tube of the present invention.

Fig. 3 faces the structural principle schematic representation for leading truck of the present invention.

Fig. 4 is the cross-sectional configuration principle schematic of facing of the present invention.

Embodiment:

Below through embodiment and combine accompanying drawing to be described further.

Embodiment:

The agent structure of present embodiment comprises valve shaft 1, preceding nut 2, nut shim 3, pressing plate pad 4, pressing plate 5, goes up short tube 6, preceding leading truck 7, stiff case 8, pressurising blanket of nitrogen 9, nitrogen charging device 10, nylon reinforcing rubber layer 11, back leading truck 12, following short tube 13, valve compressing tablet 14, valve nut 15, Returnning spring 16, pressure-bearing spring 17, pressure-bearing compression spring 18, back nut 19, Returnning spring pad 20 and flexible valve 21; The valve shaft 1 of ganging up the formula structure is ganged up stiff case 8 from top to bottom and nut 2, nut shim 3, pressing plate pad 4, pressing plate 5, flexible valve 21, valve compressing tablet 14, valve nut 15, Returnning spring 16, Returnning spring pad 20, pressure-bearing spring 17, pressure-bearing compression spring 18 and back nut 19 before nesting type is shaped on successively; The two side ends up and down of the stiff case 8 of spherical structure is shaped on short tube 6, preceding leading truck 7 and back leading truck 12, following short tube 13 respectively; The protruding place of the side of stiff case 8 is shaped on nitrogen charging device 10; The inboard of stiff case 8 is shaped on pressurising blanket of nitrogen 9, and the inboard of pressurising blanket of nitrogen 9 is shaped on nylon reinforcing rubber layer 11; The inboard that is attached to nylon reinforcing rubber layer 11 is stretched at the avris place of flexible valve 21; Stiff case 8 is spherical with nylon reinforcing rubber layer 11; Flexible valve 21 is bowl-shape; The curvature of flexible valve 21 is identical with nylon reinforcing rubber layer 11 curvature; Stiff case 8 is made up of pressurising blanket of nitrogen 9 and nylon reinforcing rubber layer 11; The nylon reinforcing rubber layer 11 of spherical structure is fixed between the flange of flange and stiff case 8 of forward and backward leading

truck

7 and 12, forward and backward leading

truck

7 and 12 fixing by upper and lower short tube and stiff case 8, and flexible valve 21 is fixed on the valve shaft 1 through valve compressing tablet on the pressing plate 5 14 and valve nut 15; Valve shaft 1 is fixed in through preceding leading truck 7 and back leading truck 12 in the middle of the runner, and flexible valve 21 forms the flexible face sealing with curvature with the inwall of stiff case 8.

Present embodiment is installed and used in the process, when the flowing medium forward flow, when valve shaft 1 forward moves; Flexible valve 21 receives the pressure medium curvature and increases, and flap is affixed to valve shaft, and the runner flow section increases; When flowing medium during near reverse flow, valve shaft 1 reversing motion under the effect of Returnning spring 16, flexible valve 21 resiliences; The restriction medium passes through; Flexible valve 21 is sealed the medium reverse flow with nylon reinforcing rubber layer 11, under the effect of medium back flow inertia and backflow static pressure, produces resiliently deformable, and pressurising blanket of nitrogen 9 forms buffering.

Present embodiment is when the medium forward flow, and flexible valve 21 is pressed close to valve shaft 1 when moving behind the valve shaft 1, and flow section is big, and the current loss is little, energy-conservation; Accidental shutdown or prominent the chance when having a power failure; Flexible valve 21 automatically resets under the impetus of Returnning spring 16; The water hammer masterpiece is used for flexible valve 21 and nylon reinforcing rubber layer 11; Take place to be delivered to pressurising blanket of nitrogen 9 after the stress deformation, the initial stage water hammer is formed good damping and absorption, prevent that water hammer from taking place; In addition, owing to be that flexible structure constitutes sealing pair, and be face seal from the sealing configuration, anti-silt impacts; Need not pilot line and diaphragm system from control mode again, the silt alluvial has no influence to the multi purpose pumping station valve, solves the technological gap that silt water is carried, and has good economic and social benefit after the popularization.

Claims

1. flexible sealing formula multi purpose pumping station valve; Comprise valve shaft, preceding nut, nut shim, pressing plate pad, pressing plate, go up short tube, preceding leading truck, stiff case, pressurising blanket of nitrogen, nitrogen charging device, nylon reinforcing rubber layer, back leading truck, short tube, valve compressing tablet, valve nut, Returnning spring, pressure-bearing spring, pressure-bearing compression spring, back nut, Returnning spring pad and flexible valve down, it is characterized in that the valve shaft of ganging up the formula structure gangs up stiff case and nested successively preceding nut, nut shim, pressing plate pad, pressing plate, flexible valve, valve compressing tablet, valve nut, Returnning spring, Returnning spring pad, pressure-bearing spring, pressure-bearing compression spring and the back nut of being shaped on from top to bottom; The stiff case of spherical structure two side ends up and down is shaped on short tube, preceding leading truck and back leading truck, following short tube respectively; The protruding place of the side of stiff case is shaped on nitrogen charging device; The inboard of stiff case is shaped on the pressurising blanket of nitrogen, and the inboard of pressurising blanket of nitrogen is shaped on the nylon reinforcing rubber layer; The inboard that is attached to the nylon reinforcing rubber layer is stretched at the avris place of the flexible valve of bowl structure; Stiff case and nylon reinforcing rubber layer are spherical structure; The curvature of flexible valve is identical with nylon reinforcing rubber layer curvature; The nylon reinforcing rubber layer of spherical structure is fixed between the flange of flange and stiff case of forward and backward leading truck; Forward and backward leading truck is fixed by upper and lower short tube and stiff case; Flexible valve is fixed on the valve shaft through valve compressing tablet on the pressing plate and valve nut, and valve shaft is fixed in through preceding leading truck and back leading truck in the middle of the runner, and the inwall of flexible valve and stiff case forms the flexible face sealing with curvature.

2. flexible sealing formula multi purpose pumping station valve according to claim 1; It is characterized in that when flowing medium in the pumping plant valve during forward flow, when the valve shaft forward moved, flexible valve received the pressure medium curvature and increases; Flap is affixed to valve shaft, and the runner flow section increases; When the flowing medium reverse flow, the valve shaft reversing motion, the flexible valve resilience, the valve outer rim forms face seal with the nylon reinforcing rubber layer of same material, identical curvature, blocks pipeline, and the restriction liquid passes through; Flexible valve and nylon reinforcing rubber layer produce resiliently deformable under the effect of medium back flow inertia and backflow static pressure when sealing the medium reverse flow, form the first road buffer function; The nylon reinforcing rubber layer is in the process of pressurized elongation, and the pressurising blanket of nitrogen of stiff case forms the second road buffer function; The twice buffering prevents that water hammer from taking place; The flexible face sealing that flexible valve and nylon reinforcing rubber layer form, functional to the silt environmental sealing.