CN205515906U

CN205515906U - Throttling valve

Info

Publication number: CN205515906U
Application number: CN201620061875.7U
Authority: CN
Inventors: 谈恒; 李增
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-01-21
Filing date: 2016-01-21
Publication date: 2016-08-31
Anticipated expiration: 2026-01-21

Abstract

The utility model relates to a throttling valve includes first body, second body and sealing washer, and first body includes the inlet end of integral type, first link, has seted up inlet channel at the inlet end, has seted up connect the via hole, inlet channel and connect the via hole intercommunication at the link, air outlet channel has been seted up to the second body to the inlet port is seted up to side at air outlet channel, inlet port and air outlet channel intercommunication, the sealing washer cup joints in the second body, and sealing washer and connect the via hole's inner wall butt, part second body and first link sliding connection and inlet port and inlet channel switch -on. When using throttling valve, the preset air current of pressure regulating frock, rotatory second body for first body and second body relative movement, and then change inlet channel's size and stream pressure value make throttling valve's gas flow easily control and control accurate stably. Adjust this throttling valve simple structure of in -process of gas flow, small, use convenient, whole gas tightness good.

Description

Choke valve

Technical field

The utility model relates to pneumatic system technical field, particularly relates to choke valve.

Background technology

Choke valve is mainly used in the Small Flow Control in lung ventilator gas circuit, needs to use low discharge in lung ventilator gas circuit Gas continues to flow in expiration gas circuit, and its Main Function is to be formed force samples pipeline to rinse air-flow, prevents Aqueous vapor is condensate in force samples pipeline, affects tonometric accuracy and precision.

But, traditional choke valve also exists the shortcomings such as structure is complicated, volume is big, flow-control is unstable.

Utility model content

Based on this, it is necessary to for the problem that structure is complicated, gas flow controls instability of gas circuit choke valve, A kind of choke valve is provided.

A kind of choke valve, including the first noumenon, the second body and sealing ring, described the first noumenon includes one The inlet end of formula, the first connection end, offer inlet channel at described inlet end, offer at described connection end Connection through hole, described inlet channel is had to be connected through hole connection with described；

Described second body offers outlet passageway, and offers air admission hole in the side of described outlet passageway；Institute State air admission hole to connect with described outlet passageway；

Described sealing ring is socketed on described second body, and described sealing ring supports with the described inwall being connected through hole Connect；

Described second body of part is connected end and is slidably connected and described air admission hole and described air inlet are led to described first Road is connected.

Wherein in an embodiment, described second body includes integral type outlet side, the second connection end, institute The outside stating the second connection end offers the second screw thread, and the inwall of described connection through hole offers the first screw thread, Described the first noumenon is made to threaded with described second body.

Wherein in an embodiment, described second body also includes abutting part, described abutting part and described the Two connect the fixing connection of end；Described abutting part is built in described inlet channel and connects through hole.

Wherein in an embodiment, described abutting part is coniform or wedge shape.

Wherein in an embodiment, outside the abutting part connecting end near described second, offer groove, For housing described sealing ring.

Wherein in an embodiment, described inlet channel is axially arranged along described the first noumenon；Described go out Gas passage is axially arranged along the second body.

Wherein in an embodiment, it is provided with first step, described first step in the outside of described inlet end Step surface towards described first connect end.

Wherein in an embodiment, it is provided with second step, described second step in the outside of described outlet side Step surface towards described second connect end.

Wherein in an embodiment, described sealing ring is O type rubber gasket or O type silica gel sealing ring. When using choke valve, pressure regulation frock gives certain flow, the air-flow of force value, can rotate the second body, Make the first noumenon and the second body relative movement, and then change inlet channel and the relative position of the second body； The size of inlet channel can be changed, and then change the stream pressure value of outlet side so that the gas of choke valve Flow-control is precise and stable.Sealing ring is socketed on the second body simultaneously, and sealing ring and the inwall being connected through hole Abutting, overall air-tightness is good.This throttle-valve structure is simple, volume is little, during adjusting gas flow This choke valve is easy to operate, convenient.

Accompanying drawing explanation

Fig. 1 is the cross section exploded perspective view of choke valve；

Fig. 2 is the cross section assembling schematic diagram of choke valve；

Fig. 3 is the perspective view of choke valve.

Detailed description of the invention

For the ease of understanding the utility model, below with reference to relevant drawings, the utility model is carried out more comprehensively Description.Accompanying drawing gives preferred embodiment of the present utility model.But, the utility model can be to be permitted The most different forms realizes, however it is not limited to embodiment described herein.On the contrary, provide these to implement The purpose of example is to make the understanding to disclosure of the present utility model more thorough comprehensively.

Unless otherwise defined, all of technology used herein and scientific terminology with belong to of the present utility model The implication that those skilled in the art are generally understood that is identical.Institute in specification of the present utility model herein The term used is intended merely to describe the purpose of specific embodiment, it is not intended that limit the utility model.This The term "and/or" that literary composition is used includes arbitrary and all of group of one or more relevant Listed Items Close.

The cross section exploded perspective view for choke valve as shown in Figure 1, including the first noumenon the 100, second body 200 and sealing ring 300.Wherein, the first noumenon 100 includes that the inlet end 110, first of integral type connects end 120, offer inlet channel 112 at inlet end 110, offer connection through hole 122 connecting end 120, Inlet channel 112 connects with being connected through hole 122.Second body 200 offers outlet passageway 210, and is going out Air admission hole 220 is offered in the side of gas passage 210；Air admission hole 220 connects with outlet passageway 210.Such as Fig. 2 institute Schematic diagram is assembled in the cross section for choke valve shown, in figure, sealing ring 300 is socketed on the second body 200, and close Seal 300 abuts with the inwall being connected through hole 122.It is sliding that part the second body 200 is connected end 120 with first It is dynamically connected and air admission hole 220 is connected with inlet channel 112.

When using choke valve, the second body 200 can be rotated so that the first noumenon 100 and the second body 200 Move axially relatively, and then change the relative position of inlet channel 112 and the second body 200；Work as pressure regulation When frock gives the air-flow of certain flow, force value, the size of inlet channel 112 can be changed, and then Change the stream pressure value of outlet side.

In the present embodiment, axially arranged along the first noumenon 100 of inlet channel 112；Outlet passageway 210 Axially arranged along the second body 200.Second body 200 includes that integral type outlet side 230, second connects end 240, with reference to Fig. 1 and Fig. 2, offer the second screw thread 242 in the second outside connecting end 240, connect logical The inwall in hole 122 offers the first screw thread 124, makes the first noumenon 100 threaded with the second body 200. Wherein, the first screw thread 124 is internal thread, and the second screw thread 242 is external screw thread, the first screw thread 124 and second Screw thread 242 coupling uses, and the length of the first screw thread 124 is more than the length of the second screw thread 242.

Second body 200 also includes abutting part 250, and abutting part 250 is connected the fixing connection of 240 ends with second. With reference to Fig. 2, abutting part 250 is built in inlet channel 112 and connects through hole 122.Abutting part 250 is circular cone Shape or wedge shape.In the present embodiment, abutting part 250 is coniform, and in other embodiments, it abuts Portion 250 can also be other suitable shapes, such as wedge shape, round platform etc..Near inlet channel 112 one The inner side connecting through hole 122 of end is coniform, its abutting part 250 can be connected to connect through hole 122 with The boundary of inlet channel 112.

Wherein, the diameter of abutting part 250 is less than connecting the diameter of through hole 122, when the first noumenon 100 and the When two bodies 200 are threaded connection, air admission hole 220 connects with inlet channel 122, it is simple to gas is from entering Gas passage 122 is transitioned into outlet passageway 210.

In the present embodiment, outside the abutting part 250 connecting end 240 near second, offer groove 252, For housing sealing ring 300.Sealing ring 300 is socketed on the second body 200, and sealing ring 300 leads to being connected The inwall in hole 122 abuts, and sealing ring 300, within the scope of operating pressure and certain temperature, should have good Sealing property, and along with the increase of pressure can improve between sealing property gasket set and movement parts automatically Frictional force little, stable friction factor.

Sealing ring 300 is O type rubber gasket or O type silica gel sealing ring.In the present embodiment, O type rubber Glue seal is combined by filled polytetrafluoroethylene (PTFE) ring and the O shape rubber seal of a low friction, O provides enough seal preloads, and the abrasion redeeming to PTFE ring.

The perspective view for flow controller as shown in Figure 3, in figure, sets in the outside of inlet end 110 Having first step 114, the step surface of first step 114 connects end 120 towards first.In outlet side 230 Outside is provided with second step 232, and the step surface of second step 232 connects end 240 towards second.Inlet end 100 When flexible pipe is with gas circuit frock, its inlet end 100 is provided with first step 114, is possible to prevent flexible pipe to depart from air inlet End 110.In like manner, the second step 232 that the outside of its outlet side 230 is provided with is also to prevent flexible pipe Depart from.

When using choke valve, give certain flow, the air-flow of force value by pressure regulation frock from inlet end, Reached the gap length changing abutting part with inlet channel by the outlet side of screw thread rotation choke valve, make gas Stream enters into outlet passageway from hole of entering, thus changes outlet side force value.Install in the outlet side of choke valve Flow sensor, the force value of outlet side monitored in real time by this flow sensor；When throttle valve adjustment is to required Force value time, by seccotine o'clock in the first screw thread and the junction of the second screw thread, by its first noumenon and Two bodies cling, seal.

Each technical characteristic of embodiment described above can combine arbitrarily, for making description succinct, the most right The all possible combination of each technical characteristic in above-described embodiment is all described, but, if these skills There is not contradiction in the combination of art feature, is all considered to be the scope that this specification is recorded.

Embodiment described above only have expressed several embodiments of the present utility model, its describe more concrete and In detail, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that, it is right For those of ordinary skill in the art, without departing from the concept of the premise utility, it is also possible to do Going out some deformation and improvement, these broadly fall into protection domain of the present utility model.Therefore, the utility model is special The protection domain of profit should be as the criterion with claims.

Claims

1. a choke valve, including the first noumenon, the second body and sealing ring, it is characterised in that described One body includes the inlet end of integral type, the first connection end, offers inlet channel at described inlet end, Described connection end offers connection through hole, and described inlet channel is connected through hole connection with described；

Choke valve the most according to claim 1, it is characterised in that described second body includes integral type Outlet side, the second connection end, the described second outside connecting end offers the second screw thread, described connection through hole Inwall offer the first screw thread, make described the first noumenon threaded with described second body.

Choke valve the most according to claim 2, it is characterised in that described second body also includes abutting Portion, described abutting part is connected the fixing connection of end with described second；Described abutting part is built in described inlet channel With connection through hole.

Choke valve the most according to claim 3, it is characterised in that described abutting part is coniform or wedge Shape.

Choke valve the most according to claim 3, it is characterised in that connecting end near described second Offer groove outside abutting part, be used for housing described sealing ring.

Choke valve the most according to claim 1, it is characterised in that described inlet channel is along described first Body axially arranged；Described outlet passageway is axially arranged along the second body.

Choke valve the most according to claim 1, it is characterised in that be provided with in the outside of described inlet end First step, the step surface of described first step connects end towards described first.

Choke valve the most according to claim 2, it is characterised in that be provided with in the outside of described outlet side Second step, the step surface of described second step connects end towards described second.

Choke valve the most according to claim 1 or 5, it is characterised in that described sealing ring is O type rubber Glue seal or O type silica gel sealing ring.