CN203286024U

CN203286024U - Flow valve and valve core

Info

Publication number: CN203286024U
Application number: CN2013202941335U
Authority: CN
Inventors: 王万玉
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-05-27
Filing date: 2013-05-27
Publication date: 2013-11-13
Anticipated expiration: 2023-05-27

Abstract

The utility model provides a flow valve and a valve core thereof. According to the flow valve provided by the utility model, a valve core adjusting opening is formed in the side wall of the lower end of the valve core; the size of the section of the valve core adjusting opening is reduced upwards from the lower end face of the valve core. A sealing ring is sleeved between the outer side wall of the valve core and the inner side wall of the valve body; the valve core adjusting opening can move up and down relative to the sealing face of the sealing ring. The lower end of the valve core adjusting opening is communicated with the flow inlet of the flow valve; when the upper end of the valve core adjusting opening is located above the sealing face, the upper end can be communicated with the flow outlet of the flow valve. The flow valve and the valve core provided by the utility model adopt novel structures; the cross section of the valve core adjusting opening adopts a size changing design so that flow fine tuning can be realized, the adjustment is more precise, the structure is simple and the adjustment is convenient.

Description

Flow valve and spool

[technical field]

The utility model relates to a kind of device of controlling flow, refers in particular to a kind of Flow valve and spool.

[background technique]

General Flow valve includes valve body and spool, be used for the control of liquid or gas flow, valve body is provided with for the first opening of liquid or gas inflow and is used for liquid or the second opening of gas outflow, spool is placed in the size that is used for controlling the circulation passage between the first opening and the second opening in valve body, thereby controls the flow of liquid wherein or gas.

In concrete application, oxygen inhalation apparatus device for example, one of very important instrument in the conventional oxygen delivery equipment of hospital, connect oxygen and supply with between bottle and humidifying cylinder and be provided with controlling device, this controlling device just is provided with such Flow valve, in order to control and to regulate oxygen influx and inflow velocity.The spool of traditional Flow valve is cylindrical body, and upper semisection is combined with valve interior wall to be threaded, and is equipped with seal ring and carries out airtight protection, by regulating spool, inserts length in valve body, carrys out the size of circulation passage between adjust flux entrance and flow outlet.The throughput that this kind structure is regulated changes greatly, controls accurately not, can not meet the demand of trace adjusting and minimum flow air-flow backlog demand.

Therefore, provide a kind of simple in structure, easy to adjust, have fine adjustment function, regulate accurate Flow valve and spool is real in necessary.

[summary of the invention]

The purpose of this utility model is to provide a kind of simple in structure, accurate spool of flow control.

The purpose of this utility model be to provide a kind of easy to adjust, have fine adjustment function, regulate accurate Flow valve.

, for realizing the utility model purpose, provide following technological scheme:

The utility model provides a kind of spool, and this spool lower end sidewall is provided with spool and regulates mouth, and this spool is regulated a mouthful cross-sectional sizes and upwards dwindled from the spool lower end surface.This spool is regulated mouthful cross section and is provided with the variation design of size, can coordinate the structure in valve body to carry out flow rate fine-tuning when carrying out flow control, makes adjusting more accurate.

The design that described spool is regulated mouth can have kinds of schemes, and in the some of them mode of execution, it is V-arrangement or U-shaped or the square shape groove that arranges on the sidewall of spool lower end that this spool is regulated mouth.In the some of them mode of execution, it is to cut and form around spool lower end sidewall that this spool is regulated mouth.Perhaps in conjunction with above-mentioned dual mode, in the some of them mode of execution, it mouthful is to cut around spool lower end sidewall that this spool is regulated, and then V-arrangement or U-shaped or square shape groove are set form on the outer wall that this process cuts.In the some of them mode of execution, it mouthful is that to cut a plurality of cross sections on the sidewall of spool lower end be polygonal groove that this spool is regulated.This groove can also be other shapes.

Can also adopt other modes, realize the spool adjusting mouthful that cross section upwards dwindles from the spool lower end surface, one or more groove can be set as spool, regulate mouth.

The utility model also provides a kind of Flow valve, and it comprises valve body and spool, is arranged with seal ring between spool outer side wall and valve body madial wall, and this spool adopts spool as above, and described spool is regulated mouthful sealing surface upper and lower displacement of sealing circle relatively.This spool is regulated mouthful lower end and is communicated with the flow entrance of Flow valve, and the upper end of this spool adjusting mouth can be communicated with the flow outlet of Flow valve while being positioned at the sealing surface top.

When the valve body up-down adjustment moved, the sealing surface of sealing circle was positioned at spool and regulates the diverse location of mouth when spool, thereby changed the passage between seal ring and spool adjusting mouth, namely regulated the flow that passes through.Be positioned at spool at sealing surface and regulate mouth bottom the time, flow is maximum; When sealing surface was positioned at spool adjusting mouth the top, flow was minimum; Regulate a mouthful top when sealing surface is positioned at spool, when very close to each other between seal ring and spool adjusting mouth, Flow valve cuts out.

The contrast prior art the utlity model has following advantage:

The utility model Flow valve and spool thereof adopt new structure, and spool is regulated mouthful cross section and is provided with the variation design of size, can realize flow rate fine-tuning, makes adjusting more accurate, and is simple in structure, easy to adjust.

[description of drawings]

Fig. 1 is the utility model spool embodiment one structural representation;

Fig. 2 be in Fig. 1 A-A to phantom;

Fig. 3 is the worm's eye view of Fig. 1;

Fig. 4 is the utility model spool embodiment two structural representations;

Fig. 5 be in Fig. 4 A-A to phantom;

Fig. 6 is the worm's eye view of Fig. 4;

Fig. 7 is the utility model spool embodiment three structural representations;

Fig. 8 be in Fig. 7 A-A to phantom;

Fig. 9 is the worm's eye view of Fig. 7;

Figure 10 is the utility model spool embodiment four structural representations;

Figure 11 be in Figure 10 A-A to phantom;

Figure 12 is the worm's eye view of Figure 10;

Figure 13 is one of the utility model Flow valve embodiment's schematic diagram.

[embodiment]

See also Fig. 1 ~ 12, the utility model provides a kind of spool 100, and this spool lower end sidewall is provided with spool and regulates mouth, and this spool is regulated a mouthful cross-sectional sizes and upwards dwindled from the spool lower end surface.This spool is regulated mouthful cross section and is provided with the variation design of size, can coordinate the structure in valve body to carry out flow rate fine-tuning when carrying out flow control, makes adjusting more accurate.

See also Fig. 1 ~ 3, in embodiment one, it is to cut the V-shaped valve core adjusting mouthful that V-type groove 110 forms on the sidewall of spool lower end that this spool is regulated mouth.

See also Fig. 4 ~ 6, in embodiment two, it is to cut and form around spool lower end sidewall that this spool is regulated mouth.This embodiment's spool is cylindrical, the tapered structure in spool lower end after cutting, and it is funnel shape breach 120 that this spool is regulated mouth.

See also Fig. 7 ~ 9, embodiment three is in conjunction with aforementioned two kinds of example structure features, and it mouthful is to cut as funnel shape breach 120 around spool lower end sidewall that this spool is regulated, and then cuts V-type groove 110 form on the outer wall that this process cuts.

See also Figure 10 ~ 12, in embodiment four, it mouthful is that to cut a plurality of cross sections on the sidewall of spool lower end be polygonal groove 130 that this spool is regulated.

See also Figure 13, the utility model Flow valve is a kind of embodiment wherein, it comprises valve body 200 and spool 100, this spool 100 adopts spool as above, be connected and be aided with seal ring with screw-thread fit between spool 100 upper semisections and valve body 200 and increase tightness, rotary spool 100 adjustable valve core upper-lower positions.

Be arranged with seal ring 300 between spool 100 lower semisection outer side walls and valve body 200 madial walls, described spool is regulated mouthful 110 sealing surface upper and lower displacements of sealing circle 300 relatively.This spool is regulated mouthful lower end and is communicated with the flow entrance of Flow valve, and the upper end of this spool adjusting mouth can be communicated with the flow outlet of Flow valve while being positioned at the sealing surface top.

When valve body 200 up-down adjustment moved, the sealing surface of sealing circle 300 was positioned at spool and regulates the diverse location of mouth 110 when spool 100, thereby changed the passage between seal ring 300 and spool adjusting mouth 110, namely regulated the flow that passes through.Be positioned at spool at sealing surface and regulate mouth bottom the time, flow is maximum; When sealing surface was positioned at spool adjusting mouth the top, flow was minimum; Regulate a mouthful top when sealing surface is positioned at spool, when very close to each other between seal ring and spool adjusting mouth, Flow valve cuts out.

The foregoing is only preferred embodiment of the present utility model, protection domain of the present utility model is not limited to this, any all belong to the utility model protection domain based on the equivalent transformation on technical solutions of the utility model within.

Claims

1. a spool, is characterized in that, this spool lower end sidewall is provided with spool and regulates mouth, and this spool is regulated a mouthful cross-sectional sizes and upwards dwindled from the spool lower end surface.

2. spool as claimed in claim 1, is characterized in that, it is V-arrangement or U-shaped or the square shape groove that arranges on the sidewall of spool lower end that this spool is regulated mouth.

3. spool as claimed in claim 1, is characterized in that, it is to cut and form around spool lower end sidewall that this spool is regulated mouth.

4. spool as claimed in claim 1, is characterized in that, it mouthful is to cut around spool lower end sidewall that this spool is regulated, and then V-arrangement or U-shaped or square shape groove are set form on the outer wall that this process cuts.

5. Flow valve, it comprises valve body and spool, is arranged with seal ring between spool outer side wall and valve body madial wall, it is characterized in that, this spool adopts spool as described in claim 1 ~ 4 any one, and the spool of described spool is regulated mouthful sealing surface upper and lower displacement of sealing circle relatively.