CN205806517U - Butterfly valve - Google Patents

Abstract

This utility model relates to a kind of butterfly valve, including valve body and sealing mechanism, described valve body includes valve seat and the valve shaft being axially arranged with installing hole, described sealing mechanism includes sealing member and counterpart, described valve seat includes the first end, described first end of described valve seat is located at by described counterpart, described valve shaft is rotating to be located on described valve seat, and one end of described valve shaft stretches in the described installing hole of described valve seat, the other end of described valve shaft protrudes described first end of described valve seat, described sealing member is sheathed on described valve shaft and compacted is assemblied between described counterpart and described first end of described valve seat.Above-mentioned butterfly valve is installed between main transformer and fin, common valve body is provided with sealing mechanism, counterpart is arranged at the first end of valve seat and sealing member is applied thrust, sealing member is sealed valve shaft and valve seat and is coordinated place by compacted being assemblied between counterpart and the first end of valve seat of counterpart on the first end, greatly strengthen the seal of butterfly valve, thus the oil spill rate of main transformer is greatly lowered.

Description

Butterfly valve

Technical field

This utility model relates to pipe valve technical field, particularly relates to butterfly valve.

Background technology

Butterfly valve is again flap valve, is the regulation valve of a kind of simple in construction, can be used for the on-off control of low pressure pipeline medium, butterfly Valve opening and closing element is a discoidal butterfly plate, and in valve body, the axis around himself rotates, thus reaches to open and close or the mesh of regulation 's.Butterfly valve can be used for controlling sky gas and water, steam, various Korrosionsmedium, mud, oil product, liquid metal and radiating medium etc. The flowing of all kinds fluid, acts primarily as cut-out and throttling action on pipeline.

Transformator butterfly valve is the one in butterfly valve, is widely used in power main transformer, is installed in main transformer and dissipates Between backing.Due to the upper existing defects of transformator butterfly valve design, top cover design is unreasonable, sending out of transformator butterfly valve leakage of oil Raw rate remains high, and along with main transformer runs the increase of the time limit, leakage of oil number of times substantially increases, and transformator butterfly valve leakage of oil is main One of main reason of transformator leakage of oil.Process this kind of butterfly valve leakage of oil fault to need to change top cover cushion rubber, but in reality Work is changed cushion rubber and can only alleviate leakage of oil trend, it is impossible to fundamentally solving butterfly valve leakage of oil defect.

Utility model content

Based on this, it is necessary to for the problem that cannot fundamentally solve butterfly valve leakage of oil defect, it is provided that a kind of butterfly valve.

A kind of butterfly valve, including valve body and sealing mechanism, described valve body includes valve seat and the valve shaft being axially arranged with installing hole, institute State sealing mechanism and include that sealing member and counterpart, described valve seat include that the first end, described counterpart are located at the described of described valve seat First end, described valve shaft is rotatably arranged on described valve seat, and the described installation of described valve seat is stretched in one end of described valve shaft In hole, the other end of described valve shaft protrudes described first end of described valve seat, and described sealing member is sheathed on described valve shaft and quilt Compression fit is between described counterpart and described first end of described valve seat.

Above-mentioned butterfly valve is installed between main transformer and fin, is provided with sealing mechanism on common valve body, coordinates Part is arranged at the first end of valve seat and sealing member applies thrust, and sealing member is assemblied in counterpart and valve by counterpart is compacted Seal valve shaft and valve seat between first end of seat and coordinate place on the first end, greatly strengthen the seal of butterfly valve, thus greatly The oil spill rate of amplitude reduction main transformer.

Wherein in an embodiment, described counterpart is recessed towards arranging in the middle of one end of described first end of described valve seat Hole, the one end of described first end that described valve shaft protrudes described valve seat is contained in described shrinkage pool, and described valve shaft is at axis direction Above and it is provided with gap between described shrinkage pool.

Wherein in an embodiment, described sealing mechanism also includes that fastening assembly, described counterpart and described valve seat set On described fastening assembly, described fastening assembly applies thrust by described sealing member compression fit in described to described counterpart Between counterpart and described valve seat.

Wherein in an embodiment, described fastening assembly includes installing rack and securing member, described securing member and described peace Shelving cooperation to install, described counterpart is movably arranged on described installing rack and is positioned at described the of described securing member and described valve seat Described sealing member is compressed between one end.

Wherein in an embodiment, the mode that described securing member is threaded connection with described installing rack coordinates.

Wherein in an embodiment, described installing rack is sheathed on outside described valve seat, and described with described valve seat Corresponding position, one end arranges opening, and described counterpart is movably arranged on described installing rack the described opening closing described installing rack.

Wherein in an embodiment, described counterpart along be parallel to described first extreme direction be arranged at described installing rack in On the two ends of opening, and described counterpart is provided with the through hole allowing the two ends of described installing rack to pass through, and described securing member is respectively Coordinate assembling with the two ends that described installing rack is opening and press on described counterpart.

Wherein in an embodiment, described installing rack is that the two ends of opening are equipped with external screw thread, and described securing member is for setting There is the nut of the internal thread hole coordinated with described external screw thread.

Wherein in an embodiment, described sealing member is rubber sheet gasket.

Wherein in an embodiment, described valve body also includes that flap, described flap are located at the described installation of described valve seat It is coaxially disposed with described installing hole in hole, and fixedly mounts with the described valve shaft being located in described installing hole.

Accompanying drawing explanation

Fig. 1 is the structural representation of butterfly valve in this utility model one specific embodiment.

Detailed description of the invention

For the ease of understanding this utility model, below with reference to relevant drawings, this utility model is more fully retouched State.Accompanying drawing gives preferred embodiment of the present utility model.But, this utility model can come in many different forms Realize, however it is not limited to embodiment described herein.On the contrary, providing the purpose of these embodiments is to make of the present utility model The understanding of disclosure is more thorough comprehensively.

It should be noted that when element is referred to as " being fixed on " another element, and it can be directly on another element Or element placed in the middle can also be there is.When an element is considered as " connection " another element, and it can be to be directly connected to To another element or may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " left ", " right " and similar statement are for illustrative purposes only.

Unless otherwise defined, all of technology used herein and scientific terminology are led with belonging to technology of the present utility model The implication that the technical staff in territory is generally understood that is identical.At term used in the description of the present utility model it is simply herein The purpose of specific embodiment is described, it is not intended that in limiting this utility model.Term as used herein " and/or " include Arbitrary and all of combination of one or more relevant Listed Items.

As it is shown in figure 1, the butterfly valve 100 in this utility model one specific embodiment includes valve body 10 and sealing mechanism 30, valve Body 10 includes valve seat 12 and the valve shaft 14 being axially arranged with installing hole 121, and sealing mechanism 30 includes sealing member 32 and counterpart 34, valve Seat 12 includes the first end 123, and the first end 123 of valve body 12 is located at by counterpart 34, and the installing hole of valve seat 12 is stretched in valve shaft 14 one end In 121, the other end of valve shaft 14 protrudes the first end 123 of valve seat 12, and sealing member 32 is sheathed on valve shaft 14 and compacted assembling Between counterpart 34 and the first end 123 of valve seat 12.

Above-mentioned butterfly valve 100 is installed between main transformer and fin, is provided with sealing mechanism on common valve body 10 30, counterpart 34 is arranged at the first end 123 of valve seat 12 and sealing member 32 applies thrust, and sealing member 32 is by counterpart 34 quilt Compression fit seals valve shaft 14 and valve seat 12 joining on the first end 123 between counterpart 34 and the first end 123 of valve seat 12 At conjunction, greatly strengthen the seal of butterfly valve 100, thus the oil spill rate of main transformer is greatly lowered.

Valve body 10 also includes that flap 16, flap 16 are coaxially disposed with installing hole 121 in being located at the installing hole 121 of valve seat 12, And fixedly mount with the valve shaft 14 being located in installing hole 121, when rotating valve shaft 14, drive flap 16 around the axle of valve shaft 14 self Line rotates to open or the installing hole 121 of closed valve seat 12, opens and closes or regulates and is flowed by the liquid of butterfly valve 100, on pipeline Rise and cut off and throttling action.

Sealing member 32 is provided with the endoporus allowing valve shaft 14 to pass through, and the diameter of endoporus is less than or equal to the diameter of valve shaft 14, To seal valve shaft 14, prevent leakage of oil.Specifically, sealing member 32 is rubber sheet gasket, with better seal valve shaft 14.

Counterpart 34 arranges shrinkage pool in the middle of one end of the first end 123 of valve seat 12, and valve shaft 14 protrudes the of valve seat 12 One end of one end 123 is contained in shrinkage pool, and valve shaft 14 in the axial direction and is provided with gap between shrinkage pool, make counterpart 34 and valve First end 123 of seat 12 contacts and sealing member 32 is applied thrust, if the degree of depth of shrinkage pool is the most shallow, after valve shaft 14 is assemblied in shrinkage pool Cannot contact with the first end 123 of valve seat 12, sealing member 32 cannot be compacted.

Black box 30 also includes that fastening assembly 36, counterpart 34 and valve seat 12 are located on fastening assembly 36, fastening assembly The 36 pairs of counterparts 34 apply thrust by sealing member 32 compression fit between counterpart 34 and valve body 12.

Fastening assembly 36 includes that installing rack 361 and securing member 363, securing member 363 coordinate installation with installing rack 361, coordinates Part 34 is located on installing rack 361 and compresses sealing member 32 between securing member 363 and the first end 123 of valve seat 12.Specifically, The mode that securing member 363 is threaded connection with installing rack 361 is connected, it is possible to understand that ground, in some other embodiment, and fastening Part 363 can also be connected by modes such as plugs with installing rack 361, does not limits at this.

Installing rack 361 is sheathed on outside valve seat 12, and arranges opening, counterpart with the first end 123 corresponding position of valve seat 12 34 are movably arranged on installing rack 361 opening closing installing rack 361；Counterpart 34 is arranged at along being parallel to the first end 123 direction Installing rack 361 is on the two ends of opening, and counterpart 34 is provided with the through hole allowing the two ends of installing rack 361 to pass through, fastening Part 363 coordinates assembling respectively and presses on counterpart 34 with the installing rack 361 two ends in opening.Further, installing rack 361 Two ends in opening are equipped with external screw thread, securing member 363 be provided with and coordinate with the external screw thread at two ends that installing rack is opening in The nut of screwed hole.

In this specific embodiment, being shaped as of valve seat 12 is square, installing rack 361 correspondence for right-angled U frame, coordinate Part 34 is band iron, is provided with the shrinkage pool housing valve shaft 14 in the middle of band iron, and two ends are provided with and allow the two ends of the U-shaped frame in right angle to pass through Through hole, band iron is movably set between the two ends that the U-shaped frame in right angle is opening by through hole, the mode that nut is threaded connection with The U-shaped frame in right angle is that the external screw thread at the two ends of opening coordinates and presses on band iron.Need not change the base of existing valve body 10 On plinth, it is only necessary to U-shaped for right angle frame is set in outside valve seat 12, original lid being located on valve shaft 14 is removed, by rubber blanket Sheet is located on valve shaft 14, is then assemblied in by square iron between the two ends that the U-shaped frame in right angle is opening, finally by nut and right angle U The external screw thread at type frame two ends coordinates compression square iron and rubber sheet gasket, and so, the assembling of butterfly valve 100 is simple, it is simple to assemble and permissible Effectively prevent butterfly valve 100 leakage of oil.

Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, not to above-mentioned reality The all possible combination of each technical characteristic executed in example is all described, but, as long as the combination of these technical characteristics is not deposited In contradiction, all it is considered to be the scope that this specification is recorded.

Embodiment described above only have expressed several embodiments of the present utility model, and it describes more concrete and detailed, But therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that, for the common skill of this area For art personnel, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into Protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be as the criterion with claims.

Claims (10)

1. a butterfly valve, it is characterised in that include that valve body and sealing mechanism, described valve body include the valve seat being axially arranged with installing hole And valve shaft, described sealing mechanism includes that sealing member and counterpart, described valve seat include that the first end, described counterpart are located at described valve Described first end of seat, described valve shaft is rotatably arranged on described valve seat, and described valve seat is stretched in one end of described valve shaft In described installing hole, the other end of described valve shaft protrudes described first end of described valve seat, and described sealing member is sheathed on described valve On axle and compacted be assemblied between described counterpart and described first end of described valve seat.

Butterfly valve the most according to claim 1, it is characterised in that described counterpart is towards described first end of described valve seat Arranging shrinkage pool in the middle of one end, the one end of described first end that described valve shaft protrudes described valve seat is contained in described shrinkage pool, described Valve shaft in the axial direction and is provided with gap between described shrinkage pool.

Butterfly valve the most according to claim 1, it is characterised in that described sealing mechanism also includes fastening assembly, described cooperation Part and described valve seat are located on described fastening assembly, and described fastening assembly applies thrust by described sealing member to described counterpart Compression fit is between described counterpart and described valve seat.

Butterfly valve the most according to claim 3, it is characterised in that described fastening assembly includes installing rack and securing member, described Securing member coordinates installation, described counterpart to be movably arranged on described installing rack and be positioned at described securing member and institute with described installing rack State and compress described sealing member between described first end of valve seat.

Butterfly valve the most according to claim 4, it is characterised in that described securing member is threaded connection with described installing rack Mode coordinates.

Butterfly valve the most according to claim 4, it is characterised in that described installing rack is sheathed on outside described valve seat, and with institute The described first end corresponding position stating valve seat arranges opening, and described counterpart is movably arranged on described installing rack closes described installing rack Described opening.

Butterfly valve the most according to claim 6, it is characterised in that described counterpart is arranged along being parallel to described first extreme direction It is on the two ends of opening in described installing rack, and described counterpart is provided with the through hole allowing the two ends of described installing rack to pass through, Described securing member coordinates assembling respectively and presses on described counterpart with the two ends that described installing rack is opening.

8. require the butterfly valve described in 6 according to profit, it is characterised in that described installing rack is that the two ends of opening are equipped with external screw thread, institute Stating securing member is the nut being provided with the internal thread hole coordinated with described external screw thread.

Butterfly valve the most according to claim 1, it is characterised in that described sealing member is rubber sheet gasket.

Butterfly valve the most according to claim 1, it is characterised in that it is described that described valve body also includes that flap, described flap are located at It is coaxially disposed with described installing hole in the described installing hole of valve seat, and peace fixing with the described valve shaft being located in described installing hole Dress.