CN205446908U - Butterfly valve - Google Patents

Abstract

The utility model discloses a butterfly valve has solved the dish board produced closed position easily in the middle of the complex process skew, and in a single day the skew of position is not discover, will cause great loss. The key point of the technical scheme of the utility model is be provided with at least one magnetic part on the outer periphery of dish board, just the height of magnetic part is no longer than the height of the outer periphery of dish board the magnetic switch who is used for detecting the magnetic part is located to be provided with in the closed position of dish board by the inner wall of the perforating hole of valve body to and a display device, be configured as and carry out the action that shows under the condition of magnetic switch switch -on. Thereby reached and whether to have placed correctly by more audio -visual demonstration dish board to it is more directly perceived to come the demonstration to enable to feed back the effect that through display device, and convenient to use people observes, thereby makes the complete closure of butterfly valve, has guaranteed the security of production.

Description

Butterfly valve

Technical field

This utility model relates to valve field, a kind of butterfly valve.

Background technology

Butterfly valve is again flap valve, it it is the regulation valve of a kind of simple in construction, the butterfly valve of the on-off control that can be used for low pressure pipeline medium refers to that closure member (flap or butterfly plate) is disk, rotate a kind of valve reaching to open and close around valve shaft, valve can be used for controlling the flowing of all kinds fluids such as sky gas and water, steam, various Korrosionsmedium, mud, oil product, liquid metal and radiating medium.Pipeline acts primarily as cut-out and throttling action.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 purpose of regulation.But dish plate can be occurred the change on position in the middle of the process of transport by impulsive force, or the closed position the most easily producing dish plate in the middle of use process offsets, and the skew of position does not once find, will result in great loss, and in the position problems processing dish plate the most large-scale dish plate, will take for substantial amounts of man power and material's cost, further improve space to this end, just above-mentioned technical problem is being also had.

Utility model content

The purpose of this utility model is to provide and a kind of can carry out, for dish plate closed position, a kind of butterfly valve of detecting and feeding back.

Above-mentioned technical purpose of the present utility model has the technical scheme that

A kind of butterfly valve, including valve body, dish plate, valve rod, described dish plate rotates in a circumferential direction and axial limiting along the center of valve rod in the through hole of valve body, the outer circumference surface of described dish plate is provided with at least one magnetic part, and the height of described magnetic part is less than the height of the outer circumference surface of dish plate, inwall at the through hole of described valve body is provided with the magnetic switch for detecting magnetic part at the closed position of dish plate, and a display device, it is configured to perform the action of display in the case of magnetic switch is connected.

By using technique scheme, it is provided by magnetic part, i.e. can be after dish plate rotates, detect that dish plate is positioned at the correct closed position of valve body through hole, it is thus possible to show whether dish plate is placed correctly more intuitively, and show that the effect that feedback can be made to go out is more directly perceived by display device, it is simple to make employment observe, so that butterfly valve closes completely, it is ensured that the safety of production.

Of the present utility model be further disposed in, described display device includes power supply and the luminescent device being connected with power supply.

Of the present utility model be further disposed in, described valve rod be provided with in the upper end of valve body all with the handwheel of valve rod linkage and drive motor.

By use technique scheme, be provided by handwheel and electric device, i.e. can realize manual or electronic two ways by dish plate rotate thus realize the keying of butterfly valve, occupation mode is flexible.

Of the present utility model being further disposed at is arranged on outside driving motor in, described luminescent device.

By using technique scheme, luminescent device is arranged on driving motor, thus serves and convenient can intuitively allow make employment to observe that dish plate is whether at correct closed position.

Of the present utility model being further disposed at includes pcb board and the Hall element being welded on pcb board in, described magnetic switch.

By using technique scheme, Hall element can be carried out by pcb board the inner side of arrangement valve body, play the effect of detection, be provided with pcb board and can aid in the installation and removal of whole Hall element, and it is succinct to arrange, and simultaneously facilitates maintenance.

Of the present utility model be further disposed in, described pcb board is curved.

By using technique scheme, owing to the through hole of valve body be circular, so valve body is curved, pcb board is suitable with the arc of valve body it is thus possible to play Hall element and more fit valve body, makes more tight with contacting of magnetic part, detection efficiency height.

Of the present utility model be further disposed in, the outer circumference surface in described dish plate is provided with sealing ring.

By using technique scheme, by being provided with sealing ring at the outer circumference surface of dish plate, the sealing property under playing in off position is more preferable.

Of the present utility model be further disposed in, described sealing ring is provided with the through hole suitable with magnetic part size at magnetic part.

By using technique scheme, owing to magnetic part is covered by sealing ring, thus the magnetic of magnetic part is weakened, so offering the suitable through hole of size at magnetic part to be avoided that the stop for magnetic part.

In sum, this utility model has the advantages that

1, effectively detect that whether dish plate is in correct closed mode.

2, being provided with multiple magnetic part, error is little.

3, employment is made to observe intuitive and convenient.

Accompanying drawing explanation

Fig. 1 is the overall schematic of the butterfly valve of embodiment 1；

Fig. 2 is the schematic diagram that in embodiment 1, valve body and dish plate decompose；

Fig. 3 is the overall schematic of the butterfly valve of embodiment 2.

In figure, 1, valve body；11, through hole；12, magnetic switch；2, dish plate；21, magnetic part；3, valve rod；4, handle；5, motor is driven；51, luminescent device；6, sealing ring.

Detailed description of the invention

Below in conjunction with accompanying drawing, this utility model is described in further detail.

Embodiment 1:

Refer to accompanying drawing 1, a kind of butterfly valve, including valve body 1, dish plate 2, valve rod 3, valve body 1 has a through hole 11, and dish plate 2 is arranged at the through hole 11 of valve body 1, and is connected with valve rod 3, the upper end of valve rod 3 is provided with one handle 4, with a driving motor 5, circumferentially rotate for axle center it is thus possible to realize the center that two ways produces with valve rod 3 to make the dish plate 2 of valve rod 3, thus realize being turned on or off valve body 1.

Refer to accompanying drawing 2, the outer circumference surface of dish plate 2 is provided with three magnetic parts 21, the intermediate magnetic part 21 of three magnetic parts 21 is provided at the circular same level height of dish plate 2, and the height on the surface less than dish plate 2 excircle of three magnetic parts 21, such that it is able to keep the sealing property of dish plate 2.

Refer to accompanying drawing 2, the inwall of the through hole 11 of valve body 1 is provided with the magnetic switch 12 for detecting magnetic part 21 at the closed position of dish plate 2, magnetic switch 12 also has at three, the central magnetic switch 12 of three magnetic switch 12 is also disposed at the middle position of valve body 1, the height of three magnetic switch 12 is less than the height of the inside of through hole 11, it is thus possible to ensure the sealing of valve body 1.Three magnetic switch 12 are Hall element, after sensing the magnetic field of corresponding magnetic part 21, just can send corresponding signal, and three magnetic switch 12 are all welded on the pcb board of one piece of arc, and the radian of pcb board is suitable to the corresponding radian of valve body 1.It is provided with pcb board and can aid in the installation and removal of whole Hall element, and it is succinct to arrange, simultaneously facilitating maintenance, pcb board is suitable with the arc of valve body 1 it is thus possible to play Hall element and more fit valve body 1, making more tight with contacting of magnetic part 21, detection efficiency is high.

And the outer surface at electric drive is provided with a luminescent device 51, luminescent device 51 can be electric filament lamp or LED etc., luminescent device 51 is connected with a power supply, and luminescent device 51 saves with three magnetics phase couplings, serve after magnetics senses the field signal of magnetic part 21, luminescent device 51 sends light, thus allow make employment learn dish plate 2 is in correct make position.

Its operation principle is: when dish plate 2 is shelved on correct through hole 11 inside, Magnet is had on the excircle of dish plate 2, there is magnetic, Magnet is (Hall element) when magnetic switch 12, thus the signal triggering Hall element output sensing makes the display lamp of correspondence light, such that it is able to the information that indicating closing position is correct, and it is provided with three magnetic switch 12 and three magnetic parts 21, three signals can be exported, add the accuracy of output, when three signals all export make luminescent device 51 luminous time, i.e. can confirm that dish plate 2 is in correct make position, when only one of which signal or two signal outputs make luminescent device 51 luminous, it is accomplished by making employment go to detect whether dish plate 2 has the sideslip on position.

Embodiment 2:

Refer to accompanying drawing 3, on the basis of embodiment 1, inwall at valve body 1 through hole 11 is provided with sealing ring 6, and at the magnetic switch 12 of sealing ring 6, it is provided with three holes identical with magnetic switch 12 size, it is achieved thereby that magnetic switch 12 will not be stopped, avoid affecting the magnetic field detection of magnetic switch 12, and it is with the difference of embodiment 1, the height of three magnetic switch 12 has only to the height less than sealing ring 6 inwall, preferentially selects identical with the height of sealing ring 6 inwall in the middle of the present embodiment.

This specific embodiment is only to explanation of the present utility model; it is not to restriction of the present utility model; the present embodiment can be made after reading this specification by those skilled in the art as required does not has the amendment of creative contribution, but as long as all being protected by Patent Law in right of the present utility model.

Claims (8)

1. a butterfly valve, including valve body (1), dish plate (2), valve rod (3), described dish plate (2) rotates in a circumferential direction and axial limiting along the center of valve rod (3) in the through hole (11) of valve body (1), it is characterized in that, the outer circumference surface of described dish plate (2) is provided with at least one magnetic part (21), and the height of described magnetic part (21) is less than the height of the outer circumference surface of dish plate (2), inwall at the through hole (11) of described valve body (1) is provided with the magnetic switch (12) for detecting magnetic part (21) at the closed position of dish plate (2), and a display device, it is configured to perform the action of display in the case of magnetic switch (12) is connected.

Butterfly valve the most according to claim 1, it is characterised in that described display device includes power supply and the luminescent device (51) being connected with power supply.

Butterfly valve the most according to claim 2, it is characterised in that described valve rod (3) is provided with the handwheel all linked with valve rod (3) and drives motor (5) in the upper end of valve body (1).

Butterfly valve the most according to claim 3, it is characterised in that described luminescent device (51) is arranged on driving motor (5) outside.

Butterfly valve the most according to claim 1, it is characterised in that described magnetic switch (12) includes pcb board and the Hall element being welded on pcb board.

Butterfly valve the most according to claim 5, it is characterised in that described pcb board is curved.

7. according to the butterfly valve described in claim 1 to 6 any one, it is characterized in that, inwall in described valve body (1) through hole (11) is provided with sealing ring (6), and described sealing ring (6) is provided with the through hole suitable with magnetic switch (12) place size in magnetic switch (12) place.

Butterfly valve the most according to claim 7, it is characterised in that the height of described magnetic switch (12) is less than the height of sealing ring (6) inwall.