CN218883020U

CN218883020U - Soft seal throttle valve

Info

Publication number: CN218883020U
Application number: CN202223085471.6U
Authority: CN
Inventors: 侯企丁
Original assignee: Yuyao Qifeite Pneumatic Element Co ltd
Current assignee: Yuyao Qifeite Pneumatic Element Co ltd
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2023-04-18
Anticipated expiration: 2032-11-17

Abstract

The utility model relates to a soft sealing throttle valve, which comprises a valve body, a spring retainer ring embedded in the valve body, a button sleeve movably inserted in the opening at the right end of the valve body and matched with the spring retainer ring, and a sealing ring embedded in the valve body and positioned at the left side of the spring retainer ring; a sleeve is formed outwards at the left end of the valve body, an air outlet is formed between the inner wall of the sleeve and the inner wall of the left end of the valve body, a soft sealing mechanism is further arranged on the valve body, and the soft sealing mechanism comprises a valve shell which is sealed and fixedly inserted in the sleeve, a screw rod which is inserted and screwed into the upper end of the valve shell, a valve core which is detachably embedded and fixed at the lower end of the valve shell, and a detachable soft sealing ring which is fixed on the valve core and mutually matched with the lower end of the screw rod; the utility model thoroughly prevents the occurrence of the jamming phenomenon; and the lasting and effective sealing effect is fully ensured, so that the service life is greatly prolonged.

Description

Soft seal throttle valve

Technical Field

The utility model relates to a soft seal choke valve.

Background

The throttle valve is a common valve for controlling fluid flow, the shape structure of the throttle valve is not different from that of a stop valve, but the shapes of opening and closing parts of the throttle valve are different, most of the opening and closing parts of the throttle valve are conical streamline, and the flow and the pressure can be adjusted by changing the sectional area of a channel; the existing throttle valves all adopt a hard sealing structure, namely, a starting and closing part in the throttle valve is made of rigid materials, the contact mode between the starting and closing part and the inner wall of an inner channel of the throttle valve is also rigid, if the rigid contact mode is to achieve sealing, the starting and closing part is required to be tightly pressed on the inner wall of the inner channel of the throttle valve with larger force, if the gas pressure in the channel is just higher, the starting and closing part can be locked by larger gas pressure, so that the starting and closing part cannot move in use, and the phenomenon of locking is further caused.

SUMMERY OF THE UTILITY MODEL

To the current situation of above-mentioned prior art, the utility model aims to solve the technical problem that a thoroughly prevent the emergence of the dead phenomenon of card to fully guarantee sealed effect lasting effective, thereby prolonged life's soft seal choke valve by a wide margin.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: the utility model provides a soft seal choke valve, includes the valve body, inlays spring rand, the activity of establishing in the inside spring rand of valve body and peg graft at valve body right-hand member opening part inside and with the button cover of spring rand mutually supporting and inlay and establish inside and lie in the left sealing washer of spring rand, its characterized in that of valve body: a sleeve is formed outwards at the left end of the valve body, an air outlet is formed between the inner wall of the sleeve and the inner wall of the left end of the valve body, and a soft sealing mechanism is further arranged on the valve body and comprises a valve shell which is sealed and fixedly inserted in the sleeve, a lead screw inserted and screwed into the upper end of the valve shell, a valve core which is detachably embedded and fixed at the lower end of the valve shell and a soft sealing ring which is detachably fixed on the valve core and mutually matched with the lower end of the lead screw; an annular vent cavity is formed between the outer wall of the valve shell and the inner wall of the sleeve, and the opening at the left end of the air outlet is communicated with the interior of the annular vent cavity; the lower end of the valve shell is provided with a threaded counter bore, the valve core is inserted into the threaded counter bore in a threaded manner, the center of the bottom surface of the threaded counter bore is provided with an air inlet counter bore, the center of the bottom surface of the air inlet counter bore is provided with a piston counter bore, a threaded through hole is formed between the center of the bottom surface of the piston counter bore and the upper end of the valve shell, the screw rod is inserted into the threaded through hole in a threaded manner, the lower end of the screw rod extends into the piston counter bore, an air inlet sleeve is upwards formed at the opening at the upper end of the valve core, a concentrically arranged annular concave cavity is formed on the inner wall of the opening at the end of the air inlet sleeve, a annularly arranged conical pressing ring is further outwards formed on the inner wall of the opening at the upper end of the annular concave cavity, the soft sealing ring is embedded in the annular concave cavity and positioned below the conical pressing ring, an inverted conical column is downwards formed at the lower end of the screw rod, a round corner edge is formed at the end edge of the conical column, and the outer wall of the round corner edge is matched with the opening at the upper end of the soft sealing ring; the inner wall of the piston counter bore is further provided with a plurality of air inlets which are uniformly distributed at equal angles along the circumferential direction, and the opening of the outer end of each air inlet is communicated with the inside of the annular ventilation cavity.

Furthermore, a limiting ring arranged in the circumferential direction is formed outwards on the outer wall of the lower end of the screw rod, and the outer circumferential surface of the limiting ring is movably attached to the inner wall of the piston counter bore.

Further, still the cover is equipped with two O type circle on the outer peripheral face of valve casing, two the upper and lower both sides in annular chamber of ventilating are located respectively to O type circle, every the outer wall of O type circle all seals the laminating on telescopic inner wall.

Furthermore, the peripheral face of the air inlet sleeve is further provided with positioning grooves distributed in the circumferential direction, the positioning grooves are further sleeved with sealing sleeves, the peripheral faces of the sealing sleeves are further outwards provided with horn rings arranged in the circumferential direction, the opening of each horn ring is arranged downwards, and the outer wall of the opening at the end part of each horn ring is hermetically attached to the inner wall of the corresponding air inlet counter bore.

Furthermore, a knob is fixed at the upper end of the screw rod, and a locking nut is sleeved outside the screw rod and connected with the screw rod in a threaded mode.

Compared with the prior art, the utility model has the advantages of: the utility model realizes the sealing of the throttle valve under the premise of ensuring the flow regulation function by means of the soft sealing mechanism, and the contact mode between the lead screw and the soft sealing ring in the soft sealing mechanism is flexible, the lead screw can press the round corner edge on the conical column of the lead screw on the edge of the opening at the upper end of the soft sealing ring to cut off the air flow without the help of larger pressure, thereby thoroughly preventing the occurrence of the blocking phenomenon; and because the contact mode between fillet limit and the soft sealing washer is flexible, even used for a long time after, the fillet limit can not wear and tear, and then fully guaranteed sealed lasting effective of effect to life has been prolonged by a wide margin.

Drawings

FIG. 1 is a front sectional view of the present invention;

fig. 2 is a partial enlarged structural view of the present invention at a.

Detailed Description

Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.

As shown in fig. 1-2, a soft seal throttle valve comprises a valve body 1, a spring collar 3 embedded in the valve body 1, a button sleeve 2 movably inserted in the opening at the right end of the valve body 1 and matched with the spring collar 3, and a seal ring 4 embedded in the valve body 1 and positioned at the left side of the spring collar 3; during the use, press button cover 2 so that it moves left with the hand, and then make the central card hole that the left end opening part oppresses spring rand 3 of button cover 2 warp left and turn over a certain angle, then turn left the one end of outlet duct 10 from the right side and pass button cover 2 and spring rand 3 in proper order and insert sealing washer 4, the inner wall of sealing washer 4 is held tightly on the outer wall of outlet duct 10 in order to play sealed effect, loosen button cover 2 at last, spring rand 3 will reset so that the latch top that is located on its central card hole inner wall tightens up the outer wall of outlet duct 10 with self bounce, just so fix outlet duct 10 inside the right-hand member of valve body 1, and simultaneously, spring rand 3 can promote button cover 2 so that accomplish the reseing of button cover 2 right when reseing, above-mentioned principle is prior art, and the utility model has the characteristics of: a sleeve 101 is outwards formed at the left end of the valve body 1, an air outlet 102 is formed between the inner wall of the sleeve 101 and the inner wall of the left end of the valve body 1, and a soft sealing mechanism is further arranged on the valve body 1 and comprises a valve casing 5 which is sealed and fixed in the sleeve 101 in an inserting manner, a screw rod 6 which is inserted and screwed into the upper end of the valve casing 5, a valve core 7 which is detachably embedded and fixed at the lower end of the valve casing 5, and a soft sealing ring 8 which is detachably fixed on the valve core 7 and is matched with the lower end of the screw rod 6; an annular vent cavity 56 is formed between the outer wall of the valve housing 5 and the inner wall of the sleeve 101, and the opening at the left end of the air outlet hole 102 is communicated with the inside of the annular vent cavity 56; the lower end of the valve shell 5 is provided with a threaded counter bore 53, the valve core 7 is inserted into and screwed in the threaded counter bore 53, the bottom center of the threaded counter bore 53 is provided with an air inlet counter bore 52, the bottom center of the air inlet counter bore 52 is provided with a piston counter bore 51, a threaded through hole 55 is formed between the bottom center of the piston counter bore 51 and the upper end of the valve shell 5, the screw rod 6 is inserted into and screwed in the threaded through hole 55, the lower end of the screw rod 6 extends into the piston counter bore 51, an air inlet sleeve 71 is upwards formed at an upper end opening of the valve core 7, an annular concave cavity 73 concentrically arranged is formed on the inner wall of an end opening of the air inlet sleeve 71, a conical pressing ring 72 annularly arranged is further outwards formed on the inner wall of the upper end opening of the annular concave cavity 73, the soft sealing ring 8 is embedded in the annular concave cavity 73 and positioned below the conical pressing ring 72, an inverted conical column 61 is downwards formed at the lower end of the screw rod 6, a round corner edge 62 is formed at the end edge of the conical column 61, and the outer wall of the round corner edge 62 is mutually matched with the edge of the upper end opening of the soft sealing ring 8; the inner wall of the piston counter bore 51 is also provided with a plurality of air inlet holes 54 which are uniformly distributed along the circumferential direction at equal angles, and the opening of the outer end of each air inlet hole 54 is communicated with the inside of the annular vent cavity 56.

The outer wall of the lower end of the screw rod 6 is also outwards provided with a limiting ring 63 which is annularly arranged, and the peripheral surface of the limiting ring 63 is movably attached to the inner wall of the piston counter bore 51 so as to prevent the screw rod 6 from deviating during movement.

Still the cover is equipped with two O type circle 11 on the outer peripheral face of valve casing 5, and the upper and lower both sides in annular ventilation chamber 56 are located respectively to two O type circle 11, and the outer wall of every O type circle 11 all seals up the laminating on the inner wall of sleeve 101.

The peripheral face of the air inlet sleeve 71 is further provided with positioning grooves 75 distributed in the circumferential direction, the positioning grooves 75 are further sleeved with a sealing sleeve 9, the peripheral face of the sealing sleeve 9 is further outwards provided with a horn ring 91 arranged in the circumferential direction, the opening of the horn ring 91 is arranged downwards, and the outer wall of the opening at the end part of the horn ring 91 is hermetically attached to the inner wall of the air inlet counter bore 52.

The end edge of the air inlet sleeve 71 is also formed with an annular chamfered edge 74 to facilitate installation.

The upper end of the screw rod 6 is also fixed with a knob 13, and the screw rod 6 is also sleeved and screwed with a locking nut 14.

The working principle is as follows: the lower end of the valve shell 5 is inserted into an air outlet of the air compressor, after the air compressor is started, pressure gas enters the air inlet sleeve 71 through an opening at the lower end of the valve core 7, the knob 13 is pinched by hands and rotated to drive the screw rod 6 to rotate in the threaded through hole 55, further the screw rod 6 is driven to move upwards according to the principle of spiral connection, when a gap is formed between the outer wall of the round corner edge 62 and an opening at the upper end of the soft sealing ring 8, the pressure gas in the air inlet sleeve 71 can upwards penetrate through the soft sealing ring 8 and enter the air inlet counter bore 52 and the piston counter bore 51 through the gap, then the pressure gas in the air inlet counter bore 52 and the piston counter bore 51 enters the annular vent cavity 56 through the plurality of air inlet holes 54, enters the valve body 1 through the air outlet hole 102, and finally is output outwards through the air outlet pipe 10; when the output flow of the pressure gas is required to be adjusted, the adjustment of the size of the gap can be realized by only rotating the screw rod 6; after the screw 6 is adjusted to the desired position, the locking nut 14 is screwed to move it towards the valve housing 5 until it presses against the outer wall of the valve housing 5 to prevent the screw 6 from loosening; due to the arrangement of the flared ring 91, the pressure gas in the air inlet counterbore 52 cannot flow downwards, and the pressure gas is effectively prevented from escaping outwards from the assembly gap between the valve core 7 and the valve housing 5.

If the output of the pressure gas is to be cut off, the screw rod 6 can be driven to move downwards according to the same principle only by reversely rotating the screw rod 6 until the outer wall of the round corner edge 62 is pressed on the edge of the opening at the upper end of the soft sealing ring 8, and the pressure gas in the gas inlet sleeve 71 cannot enter the gas inlet counter bore 52 and the piston counter bore 51 at the moment.

It is worth mentioning that when the soft sealing ring 8 needs to be replaced, the valve core 7 is firstly screwed to be taken out from the threaded counter bore 53, then the soft sealing ring 8 is upwards scratched, and as the soft sealing ring 8 is soft, the soft sealing ring can be upwards taken out from the conical pressing ring 72 only by slight temporary deformation, and finally the new soft sealing ring 8 is pressed downwards, so that the soft sealing ring 8 deforms and penetrates through the conical pressing ring 72 until being embedded into the annular concave cavity 73, and the arrangement of the conical pressing ring 72 can prevent the soft sealing ring 8 from being separated from the valve core 7 during working.

The utility model realizes the sealing of the throttle valve under the premise of ensuring the flow regulation function by means of the soft sealing mechanism, and the contact mode between the screw rod 6 and the soft sealing ring 8 in the soft sealing mechanism is flexible, the screw rod 6 can press the round corner edge 62 on the conical column 61 of the screw rod against the edge of the opening part at the upper end of the soft sealing ring 8 to cut off the air flow without the help of larger pressure, thereby thoroughly preventing the occurrence of the blocking phenomenon; and because the contact mode between fillet limit 62 and the soft sealing washer 8 is flexible, even used for a long time after, fillet limit 62 can not wear and tear, and then fully guaranteed sealed lasting effective of effect to life has been prolonged by a wide margin.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. The utility model provides a soft seal choke valve, includes the valve body, inlays spring rand, the activity of establishing in the inside spring rand of valve body and peg graft at valve body right-hand member opening part inside and with the button cover of spring rand mutually supporting and inlay and establish inside and lie in the left sealing washer of spring rand, its characterized in that of valve body: a sleeve is formed outwards at the left end of the valve body, an air outlet is formed between the inner wall of the sleeve and the inner wall of the left end of the valve body, and a soft sealing mechanism is further arranged on the valve body and comprises a valve shell which is sealed and fixedly inserted in the sleeve, a lead screw inserted and screwed into the upper end of the valve shell, a valve core which is detachably embedded and fixed at the lower end of the valve shell and a soft sealing ring which is detachably fixed on the valve core and mutually matched with the lower end of the lead screw; an annular vent cavity is formed between the outer wall of the valve shell and the inner wall of the sleeve, and the opening at the left end of the air outlet is communicated with the interior of the annular vent cavity; the lower end of the valve shell is provided with a threaded counter bore, the valve core is inserted into the threaded counter bore in a screwed manner, the center of the bottom surface of the threaded counter bore is provided with an air inlet counter bore, the center of the bottom surface of the air inlet counter bore is provided with a piston counter bore, a threaded through hole is formed between the center of the bottom surface of the piston counter bore and the upper end of the valve shell, the screw rod is inserted into the threaded through hole in a screwed manner, the lower end of the screw rod extends into the piston counter bore, an air inlet sleeve is upwards formed at the opening at the upper end of the air inlet sleeve, an annular concave cavity which is concentrically arranged is formed on the inner wall of the opening at the end of the air inlet sleeve, a conical pressing ring which is annularly arranged is further outwards formed on the inner wall of the opening at the upper end of the annular concave cavity, the soft sealing ring is embedded in the annular concave cavity and is positioned below the conical pressing ring, an inverted conical column is downwards formed at the lower end of the screw rod, a round corner edge is formed at the edge of the end of the conical column, and the outer wall of the round corner edge is matched with the edge of the opening at the upper end of the soft sealing ring; the inner wall of the piston counter bore is further provided with a plurality of air inlets which are uniformly distributed at equal angles along the circumferential direction, and the opening of the outer end of each air inlet is communicated with the inside of the annular ventilation cavity.

2. The soft seal throttling valve of claim 1, wherein: and a limiting ring arranged in the circumferential direction is further formed outwards on the outer wall of the lower end of the screw rod, and the outer circumferential surface of the limiting ring is movably attached to the inner wall of the piston counter bore.

3. A soft seal throttling valve according to claim 2, wherein: still the cover is equipped with two O type circles on the outer peripheral face of valve casing, two the upper and lower both sides in annular chamber of ventilating are located respectively to O type circle, every the outer wall of O type circle is all sealed the laminating on telescopic inner wall.

4. A soft seal throttling valve according to claim 3 wherein: the air inlet structure is characterized in that positioning grooves distributed annularly are further formed in the outer peripheral face of the air inlet sleeve, a sealing sleeve is further sleeved in each positioning groove, a horn ring arranged annularly is further formed outwards on the outer peripheral face of the sealing sleeve, the opening of each horn ring is arranged downwards, and the outer wall of the opening at the end part of each horn ring is hermetically attached to the inner wall of the corresponding air inlet counter bore.

5. The soft seal throttling valve of claim 4, wherein: the upper end of the screw rod is also fixed with a knob, and the screw rod is sleeved with a locking nut.