CN207437815U - The piston cylinder supporting mechanism of piston valve - Google Patents

Abstract

The utility model belongs to piston valve member, particularly relates to a kind of piston cylinder supporting mechanism of piston valve.Including housing, the in vivo piston cylinder of shell is axially disposed at, coaxial package is matched in piston cylinder and divides gas piston with what it realized dynamic sealing；The inside and outside both sides of gusset being disposed radially are fixed respectively with piston cylinder outside and inner walls, it is driven and coordinated by the power intake of shaft and linkage arranged on the driving source of hull outside, the power output end of linkage is with dividing gas piston drive to assemble and realizing its axial movement；Gusset is located on rear side of piston cylinder front opening, and shaft outer end is connected with driving source, extends after the power intake transmission cooperation of inner end and linkage and is fixed with inner walls.The utility model efficiently solves the technical problems such as poor, the shaft discontinuity equalization of existing product piston cylinder supporting mechanism stability, has many advantages, such as piston cylinder stress equalization, shaft stress equalization, can long-time steady operation.

Description

The piston cylinder supporting mechanism of piston valve

Technical field

The utility model belongs to piston valve member, particularly relates to a kind of piston cylinder supporting mechanism of piston valve.

Background technology

Piston valve is different from the butterfly valve and gate valve that are only used as pipeline cut-out, and piston valve is to meet various special adjust to require Valve.Its regulatory function axially moves to realize in valve chamber by one similar to piston-like cylinder.Medium is along axis Enter housing in arcuation, the runner in piston valve is axisymmetric shape, and turbulent flow will not be generated when fluid flows through.Flow area changes Change is that realization is axially moved in a straight line along pipeline by a piston.No matter fluid section of the piston in what position, valve chamber is equal For ring-type, shunk in exit to axle center.Piston valve has high negotiability, and aperture is linear with flow, can be effectively It avoids cavitating and shake.Inner casing has fairshaped water conservancy diversion rib to be connected with shell, and stainless steel pistons are slided by reliable guiding, prevent to produce It is raw to tilt or run not smooth.The end face globulate of inner casing upstream makes fluid form a progressive formation, and piston is by being mounted in shell Crank connecting link operate.

For the scope that applicant understands, the current country there is no national standard or professional standard to carry out piston valve performance indicator Normalization limits.Required technical knowledge and skills content based on those skilled in the art, meet piston cylinder stable structure and with piston Assemble concentricity, ensure that piston is slided by reliable guiding, prevent it and generate to tilt or operation is not smooth, not only in structure design and Needs in assembling are effectively ensured, while are also to weigh piston valve in operational process to be capable of the important of long-time steady operation One of technical indicator.

The main product of domestic market piston valve is that German valve manufacturer --- VAG companies manufacture, which is It improves and develops on the basis of the needle-valve in the U.S., it is resulted from the 1940s, attaining the 1960s in maturation.From It was produced to 2007 the 1960s and is mounted with more than 4000 piston valve.Installation is introduced since the 1990s in China Piston valve largely uses VAG companies in the engineering projects such as large hydraulic engineering, sewage disposal, water delivery and water generating at present Product.

Main problem existing for above-mentioned existing product is as follows：First, the radial positioning of piston cylinder is by being fixed in the middle part of piston cylinder And the gusset between housing is realized, not only assembly difficulty is big (piston cylinder is with dividing the assembling concentricity of gas piston to be not easy to ensure), and And because axial restraint point with radial fixation points are closer to the distance causes stability of strutting system poor, when serious because divide gas piston with piston cylinder not It is coaxial to cause " stuck " phenomenon occur.Second is that as transmission critical piece --- the shaft of linkage be semiaxis, its one end Pass sequentially through piston cylinder, housing is connected with external power source, the crank center peg-in-hole assembly of the other end and linkage causes Shaft stress effect at one end is lower easily to generate deflection deformation, so that the piston operation of its driving is not smooth；Shaft and work simultaneously Plug tube one side, which wears to connect, makes piston cylinder discontinuity equalization easily generate inclination, operation stability and poor reliability；Third, stable structure Property difference be also one of the main reason for piston valve is caused to generate larger operating noise in the operating condition.

Applicant does not have found there be the document report close with the application in patent database at home by retrieval.

Utility model content

The purpose of this utility model is to provide a kind of piston cylinder supporting mechanism of piston valve, using in the utility model Structure can not only make the support that piston cylinder is effectively stablized, and shaft stress can be made more balanced and be not easy deformation.

The overall technology of the utility model is conceived：

The piston cylinder supporting mechanism of piston valve, including housing, be axially disposed at the in vivo piston cylinder of shell, coaxial package is matched somebody with somebody Divide gas piston together in piston cylinder and with what it realized dynamic sealing；The inside and outside both sides of gusset being disposed radially respectively with piston cylinder Outside and inner walls are fixed, and are driven and are coordinated through the power intake of shaft and linkage arranged on the driving source of hull outside, The power output end of linkage is with dividing gas piston drive to assemble and controlling its axial movement；Before the gusset is located at piston cylinder On rear side of end opening, shaft outer end is connected with driving source, is extended simultaneously after the power intake transmission cooperation of inner end and linkage It is fixed with inner walls.

Applicant offers flowing hole, because it belongs to existing skill it should be noted that meet fluid overcurrent on gusset Art, details are not described herein by applicant.

The particular technique design of the utility model also has：

To meet the connection reliability of gusset and adjacent parts, realize its effective position, be further ensured that piston cylinder It axially and radially fixes, preferred technical implementation way is to be filled on the outside of the gusset with piston cylinder open back side by seam allowance With fixation.

The technical implementation way being more highly preferred to is that the piston cylinder opening is flange plate structure, gusset outside and flange Seam allowance is assembled and is bolted on the inside of disk.

To be convenient for overhauling its inside on the basis of meeting piston cylinder function and realizing, preferred technical implementation way It is that the piston cylinder rear portion is a segmentation structure, the capping assembled by its end makes piston cylinder rear portion form cecum.

The technical implementation way being more highly preferred to is that the capping is fixed with piston cylinder by bolts assemblies.

Enter for ease of equal flows in the annular chamber that housing and piston cylinder formed, while reduce high-velocity fluid for work The impact of plug tube, preferred technical implementation way are that the capping is conical structure raised outward.

For ease of the assembling of piston valve and to the maintenance inside piston valve, preferred technical implementation way is, housing by Left side structure body and right side structure body realize sealing fixing assembling by split flange and containment member.It can be obvious It is that containment member is more using flanged joint gasket seal, self-tightening sealing, O-ring sealing, rubber sealing etc. is included but is not limited to The existing static seal form of kind, all without departing from the scope of the utility model.

For ease of the assembling of housing and the connection reliability of mating surface, preferred technical implementation way is that connection is left and right The split flange of side structure body is assembled using seam allowance.

To meet the structural strength of piston cylinder, it is made to be not likely to produce deformation, is further ensured that point operation of gas piston is smooth, Preferred technical implementation way is to be equipped with the ring enhancement portion thickeied with the piston cylinder forepart side wall of link of boards.

Applicant it should be noted that：

In the description of the utility model, term " interior ", " outer ", " axial direction ", " radial direction ", " front end ", " end ", " a left side The orientation or position relationship of the instructions such as side ", " right side ", " rear side " be based on orientation shown in the drawings or position relationship, be only for Convenient for simplify description the utility model rather than instruction imply signified device or element must have specific orientation, With specific azimuth configuration and operation, therefore it is not intended that limitation to the utility model.In addition, term " first ", " the Two " are only used for description purpose, and it is not intended that instruction or hint relative importance.

Technological progress acquired by the utility model is：

1st, the structure design of shaft is changed to axis by the utility model from semiaxis, and meeting, the effectively support of countershaft both ends is fixed Position, reduce its because unbalance stress generate deformation while, the ingenious axial two-point locating for realizing piston cylinder, compared to existing product For further improve piston cylinder axially position reliability.

2nd, realize that the gusset of radial positioning is arranged on the inside of piston cylinder front opening to piston cylinder, coordinate the axis of shaft and housing To positioning, the spacing of axially and radially fixed point, support construction overall stability and better reliability are effectively increased, while because Piston cylinder with divide gas piston concentricity easily ensure and assembly difficulty is small.

3rd, the structure design of the ring flange of piston cylinder opening, on the premise of meeting with gusset cooperation firmness, into one Step improves the reliability to piston cylinder axially position.

4th, the sectional design of housing and piston cylinder, effectively meets the needs of assembling and trouble hunting, is more suitable for work Industry production application.

5th, piston barrel structure is effectively met using the structure design of annular thickening part with the piston cylinder side wall of link of boards The needs of intensity, make it be not easy deformation, and it is smooth to further ensure point operation of gas piston.

Description of the drawings

Fig. 1 is the structure diagram of the utility model.

Fig. 2 is Fig. 1 left views.

Reference numeral in attached drawing is as follows：

1st, cover；2nd, piston cylinder；3rd, housing；4th, split flange；5th, shaft；6th, linkage；7th, gusset；8th, gas is divided to live Plug.

Specific embodiment

The utility model is described further with reference to embodiments, but should not be construed as the limit to the utility model Fixed, the scope of protection of the utility model is subject to the content of claim record, any equivalent skill made according to specification Art means are replaced, all without departing from the scope of protection of the utility model.

The piston cylinder supporting mechanism of piston valve, including housing 3, the piston cylinder being axially disposed in housing 32, coaxial sleeve It assembles and divides gas piston 8 together in piston cylinder 2 and with what it realized dynamic sealing；The 7 inside and outside both sides of gusset being disposed radially respectively with 2 outside of piston cylinder and 3 inner wall of housing are fixed, and power of the driving source through shaft 5 and linkage 6 arranged on 3 outside of housing inputs End transmission cooperation, the power output end of linkage 6 is with dividing the transmission of gas piston 8 to assemble and controlling its axial movement；Gusset 7 is located at On rear side of 2 front opening of piston cylinder, 5 outer end of shaft is connected with driving source, and inner end and the power intake of linkage 6 use key Extend after transmission cooperation and fixed with 3 inner wall of housing.

To meet fluid overcurrent, flowing hole is offered on gusset, because it belongs to the prior art, applicant is no longer superfluous herein It states.

The opening of piston cylinder 2 is flange plate structure, and 7 outside of gusset is assembled and is bolted with seam allowance on rear side of ring flange.

2 rear portion of piston cylinder is a segmentation structure, and the capping 1 assembled by its end makes 2 rear portion shape of piston cylinder Into cecum, capping 1 is fixed with piston cylinder 2 by bolts assemblies.

The capping 1 is conical structure raised outward.

Housing 3 realizes sealing fixing assembling by left side structure body and right side structure body by split flange 4 and containment member. Containment member uses flanged joint gasket seal.

The split flange 4 for connecting left and right side structure is assembled using seam allowance.

The 2 forepart side wall of piston cylinder being connected with gusset 7 is equipped with the ring enhancement portion thickeied.

For verification the present embodiment and the stability of piston cylinder and the input status of driving force in existing product, applicant carries out Following contrast test：

1st, test products：Product of the applicant disclosed in the utility model patent of Patent No. 201620106332.2 and Product in the present embodiment.

2nd, experimental condition：Valve switch power source selects Z60 electric drivers, the blowing pressure 3kg in valve, opens electricity and drives Dynamic device driving piston cylinder movement.

3rd, result of the test is as follows：Applicant is disclosed in the utility model patent in Patent No. 201620106332.2 Product can not be driven using electric driver, and remove electric driver needs prime of life man that can firmly beat using manual torque-indicating wrencg It opens, the product of the present embodiment can easily drive piston cylinder and even running using electric driver, be tested through manual torque-indicating wrencg Force value is 500NM.Illustrate that the product in the present embodiment is stable smooth in the case of relatively low driving power input.

Claims (9)

1. the piston cylinder supporting mechanism of piston valve, including housing (3), the piston cylinder (2) being axially disposed in housing (3), same Axle sleeve assembling divides gas piston (8) together in piston cylinder (2) and with what it realized dynamic sealing；The gusset (7) being disposed radially is inside and outside Both sides are fixed respectively with piston cylinder (2) outside and housing (3) inner wall, and the driving source on the outside of housing (3) is through shaft (5) with connecting The power intake transmission cooperation of linkage (6), the power output end of linkage (6) is with dividing gas piston (8) transmission assembling simultaneously Control its axial movement；It is characterized in that the gusset (7) is located on rear side of piston cylinder (2) front opening, shaft (5) outer end with Driving source connects, and inner end is with extending and being fixed with housing (3) inner wall after the power intake transmission cooperation of linkage (6).

2. the piston cylinder supporting mechanism of piston valve according to claim 1, it is characterised in that on the outside of the gusset (7) with Piston cylinder (2) open back side is assembled by seam allowance and fixed.

3. the piston cylinder supporting mechanism of the piston valve according to any one of claim 1 or 2, it is characterised in that the work Plug tube (2) opening is flange plate structure, assembles and is bolted with seam allowance on the inside of ring flange on the outside of gusset (7).

4. the piston cylinder supporting mechanism of piston valve according to claim 1, it is characterised in that described piston cylinder (2) rear portion For a segmentation structure, the capping assembled by its end (1) makes piston cylinder (2) rear portion form cecum.

5. the piston cylinder supporting mechanism of piston valve according to claim 4, it is characterised in that the capping (1) and piston Cylinder (2) is fixed by bolts assemblies.

6. the piston cylinder supporting mechanism of the piston valve any one of according to claim 4 or 5, it is characterised in that the envelope (1) is covered as conical structure raised outward.

7. the piston cylinder supporting mechanism of piston valve according to claim 1, it is characterised in that housing (3) is by left side structure body And right side structure body realizes sealing fixing assembling by split flange (4) and containment member.

8. the piston cylinder supporting mechanism of piston valve according to claim 1, it is characterised in that connection left and right side structure Split flange (4) is assembled using seam allowance.

9. the piston cylinder supporting mechanism of the piston valve according to any one of claim 1,2,4,5,7,8, it is characterised in that Piston cylinder (2) forepart side wall being connected with gusset (7) is equipped with the ring enhancement portion thickeied.