CN113639063B

CN113639063B - Gas regulating valve

Info

Publication number: CN113639063B
Application number: CN202110922402.7A
Authority: CN
Inventors: 卢长根; 蔡艳兰; 王宁杰
Original assignee: Zhuzhou CRRC Times Electric Co Ltd
Current assignee: Zhuzhou CRRC Times Electric Co Ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2023-10-13
Anticipated expiration: 2041-08-12
Also published as: CN113639063A

Abstract

The invention provides a gas regulating valve, which belongs to the technical field of regulating valves and comprises a valve body, wherein a first channel and a second channel which are mutually communicated are respectively arranged along the axial direction and the radial direction of the valve body; the valve core is nested in the first channel, and a third channel is arranged along the axial direction of the valve core, wherein a first through hole and a second through hole which are communicated with the third channel are arranged on the side wall of the valve core; the knob is connected with the valve core and is locked with the valve core through a fastener, wherein the knob drives the valve core to rotate, so that the first through hole and the second through hole Kong Zhuge are opposite to and misplaced with the second channel, and the adjustment of the gas flow is realized. According to the gas regulating valve provided by the invention, the conventional circular through hole and the opposite through hole are arranged on the valve core, so that the regulation of the gas flow is realized under the action of the knob, and the regulation is continuously arranged without abrupt change, so that the gas flow regulation range is enlarged.

Description

Gas regulating valve

Technical Field

The invention belongs to the technical field of regulating valves, and relates to a gas regulating valve.

Background

In the field of sewage treatment, the precise control of anoxic aeration and the control of reflux ratio are the problems which need to be solved for a long time, and currently, a ball valve of UPVC (unified power supply) is used, for example, a novel gas regulating valve disclosed in China patent (CN 202901350U) is used, and the contact area between a horn-shaped opening and two cavities of a valve seat is changed by rotating an adjusting rod. Although the gas regulating valve can realize on-off control and has longer service life, the flow regulating range is small, and the regulating accuracy is not enough.

Disclosure of Invention

The present invention has been made in view of the above problems occurring in the prior art, and an object of the present invention is to provide a gas regulating valve capable of expanding a flow rate regulating range and improving flow rate regulating accuracy.

The aim of the invention can be achieved by the following technical scheme: a gas regulating valve, comprising:

the valve body is provided with a first channel and a second channel which are communicated with each other along the axial direction and the radial direction of the valve body respectively;

the valve core is nested in the first channel, and a third channel is arranged along the axial direction of the valve core, wherein a first through hole and a second through hole which are communicated with the third channel are arranged on the side wall of the valve core, the first through hole is a round hole, and the second through hole is a special-shaped hole;

the knob is connected with the valve core and is locked with the valve core through a fastener, wherein the knob drives the valve core to rotate, so that the first through hole and the second through hole Kong Zhuge are opposite to and misplaced with the second channel, and the adjustment of the gas flow is realized.

In the above gas regulating valve, the second through hole comprises a special-shaped cavity formed by radial recession of the side wall of the valve core, and a third through hole is arranged at the bottom of the special-shaped cavity, wherein the third through hole is communicated with the third through hole, the third through hole is in a circular shape, and the aperture of the third through hole is smaller than that of the first through hole.

In the above-mentioned gas regulating valve, the special-shaped cavity includes first pitch arc and the second pitch arc of relative setting to and connects first connecting wire and the second connecting wire of first pitch arc and second pitch arc, wherein, the edge coincidence of first pitch arc and third through-hole, first connecting wire and second connecting wire set up with first pitch arc tangent respectively, and the bending direction of second pitch arc is unanimous with the bending direction of first pitch arc.

In the gas regulating valve, the special-shaped cavity is arranged in a horn shape, the caliber of one end of the special-shaped cavity where the first arc line is located is smaller, the caliber of one end of the special-shaped cavity where the second arc line is located is larger, and the first connecting line and the second connecting line are respectively connected with the two ends of the second arc line through the arcs.

In the above-mentioned gas regulating valve, the included angle formed by the connection line of the projection of the center of the first through hole on the axis of the valve core and the connection line of the projection of the center of the third through hole on the axis of the valve core is 120 °.

In the above-mentioned gas control valve, the case includes the core, and the axial setting of core is followed to the third passageway, and first through-hole and second through-hole set up in the lateral wall of core, and wherein, the both ends at the core are nested respectively and are connected with the bush, are first bush and second bush respectively, and are provided with the sealing washer between first bush and the second bush and the core lateral wall respectively.

In the gas regulating valve, the first bushing and the second bushing are respectively provided with the first annular groove and the second annular groove along the axial direction of the first bushing and the axial direction of the second bushing, and the first annular groove and the second annular groove are respectively nested with the sealing rings.

In the above-mentioned gas regulating valve, a positioning portion is provided between the valve core and the knob, wherein the positioning portion includes a positioning column provided on the valve core and a positioning hole correspondingly provided on the knob, and the positioning column is matched with the positioning hole through a polygon.

In the above gas regulating valve, the knob is provided with scales of 0, 1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 7/8 and 1, respectively, and a total of 9 flow indication scales, wherein a flat angle is formed between the scale 0 and the scale 1.

In the above-mentioned gas regulating valve, be provided with spacing portion between case and the knob, wherein, this spacing portion is including setting up the first stopper on the case to correspond the second stopper that sets up on the knob, and first stopper and second stopper contact type support and lean on the cooperation.

Compared with the prior art, the invention has the beneficial effects that:

(1) According to the gas regulating valve provided by the invention, the conventional circular through hole and the opposite through hole are formed in the valve core, so that the regulation of the gas flow is realized under the action of the knob, and the regulation is continuously arranged without abrupt change, so that the gas flow regulation range is enlarged.

(2) Through the setting in dysmorphism chamber, realized the transition when gas flow adjusts to the third through-hole from first through-hole to realized gas flow's continuity change, and then enlarged gas flow's accommodation range, in addition, set up dysmorphism chamber and be first pitch arc, second pitch arc, first connecting wire and second connecting wire, and first connecting wire and second connecting wire are tangent the setting with first pitch arc respectively, made things convenient for the processing in dysmorphism hole.

(3) The special-shaped cavity is arranged to be in a horn shape, and the knob drives the valve core to be aligned with the second channel before the end with the smaller caliber in the special-shaped cavity in the rotating process, and the diameter of the circle where the second arc line is combined is smaller than that of the first through hole, so that the continuous reduction of the gas flow is realized, and the continuous adjustment is realized.

(4) The included angle is 120 degrees, so that the strength of the valve core is guaranteed, the influence on the integral strength of the valve core due to the fact that the distance between the first through hole and the second through hole is relatively short is avoided, and the convenience in use of the gas regulating valve and the continuity in gas flow regulation are improved.

(5) The bushings are arranged at the two ends of the core body, so that smoothness of the valve core in the rotating process is guaranteed, friction coefficient between the valve body and the valve core is reduced, and in addition, the sealing rings are arranged between the bushings and the core body, so that tightness of the valve core is guaranteed.

(6) Nesting cooperation between the valve core and the knob is realized through polygonal cooperation between the positioning column and the positioning hole, circumferential freedom degree between the valve core and the knob is limited, and synchronism of the knob when driving the valve core to rotate is ensured. In addition, the locating column and the locating hole adopt fool-proof design, and only one angle within 360 degrees can be mutually matched, so that the phenomenon of reverse assembly of the knob in the assembly process is avoided.

(7) And through the cooperation between the first limiting block and the second limiting block, the gas flow in the initial test state of the gas regulating valve is realized, so that the regulating range of the gas flow is limited, and the precision of gas flow regulation is improved.

Drawings

Fig. 1 is a schematic view of a gas regulating valve according to the present invention.

Fig. 2 is a schematic view of a gas regulating valve according to another aspect of the present invention.

Fig. 3 is a cross-sectional view A-A of fig. 2.

Fig. 4 is an exploded view of a gas regulating valve of the present invention.

FIG. 5 is a schematic view of a core according to a preferred embodiment of the present invention.

FIG. 6 is a schematic view of a core according to another embodiment of the present invention.

100, valve body in the figure; 110. a first channel; 120. a second channel; 130. a first reticle; 200. a valve core; 210. a core; 211. a third channel; 212. a first through hole; 213. a second through hole; 2131. a special-shaped cavity; 2132. a third through hole; 2133. a first arc; 2134. a second arc; 2135. a first connecting line; 2136. a second connecting line; 220. a first bushing; 221. a first annular groove; 230. a second bushing; 231. a second annular groove; 240. a seal ring; 250. a second reticle; 260. positioning columns; 270. a first limiting block; 300. a knob; 310. positioning holes; 320. and a second limiting block.

Detailed Description

The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

It should be noted that all directional indicators (such as up, down, left, right, front, and rear … …) in the embodiments of the present invention are merely used to explain the relative positional relationship, movement, etc. between the components in a particular posture (as shown in the drawings), and if the particular posture is changed, the directional indicator is changed accordingly.

As shown in fig. 1 to 6, the gas regulating valve provided by the present invention includes:

the valve body 100 is provided with a first channel 110 along the axial direction of the valve body 100, a second channel 120 along the radial direction of the valve body 100, and the first channel 110 and the second channel 120 are mutually communicated, wherein one end of the first channel 110 is used as an air outlet end, and the second channel 120 is used as an air inlet end;

the valve core 200 is nested in the first channel 110, and a third channel 211 is arranged along the axial direction of the valve core 200, wherein a first through hole 212 and a second through hole 213 which are communicated with the third channel 211 are arranged on the side wall of the valve core 200, the first through hole 212 is a round hole, and the second through hole 213 is a special-shaped hole;

the knob 300 is connected with the valve core 200, and is connected with the valve core 200 through the fastener, wherein the knob 300 drives the valve core 200 to rotate, so that the first through hole 212 and the second through hole 213 are opposite to the second channel 120 one by one and are staggered, and the adjustment of the gas flow is realized.

When the first through hole 212 and the second channel 120 are aligned, the gas flow reaches the maximum value, the knob 300 drives the valve core 200 to rotate, so that the first through hole 212 and the second channel 120 are dislocated, the gas flow is gradually reduced, the first through hole 212 and the second through hole 213 are overlapped in a vertical plane along with the continuous rotation of the valve core 200, the gas flow is further reduced, the valve core 200 continuously rotates, the second through hole 213 is gradually aligned with the second channel 120, the gas flow is reduced again, and finally, no gas flows out from the gas outlet end when the second through hole 213 and the second channel 120 are dislocated.

According to the gas regulating valve provided by the invention, the conventional circular through hole and the opposite through hole are arranged on the valve core 200, so that the regulation of the gas flow is realized under the action of the knob 300, and the regulation is continuously arranged without abrupt change, so that the gas flow regulating range is enlarged.

Preferably, the second through hole 213 includes a shaped cavity 2131 formed by radially recessing on a sidewall of the valve core 200, and a third through hole 2132 is provided on a cavity bottom of the shaped cavity 2131, wherein the third through hole 2132 is in communication with the third channel 211, and the third through hole 2132 is in a circular shape, and a pore diameter of the third through hole 2132 is smaller than a pore diameter of the first through hole 212.

Further preferably, the shaped cavity 2131 comprises a first arc 2133 and a second arc 2134 which are oppositely arranged, and a first connecting line 2135 and a second connecting line 2136 which connect the first arc 2133 and the second arc 2134, wherein the first arc 2133 coincides with the edge of the third through hole 2132, the first connecting line 2135 and the second connecting line 2136 are respectively arranged tangentially to the first arc 2133, and the bending direction of the second arc 2134 coincides with the bending direction of the first arc 2133.

In this embodiment, through the setting of special-shaped cavity 2131, the transition when gas flow adjusts to third through hole 2132 from first through hole 212 has been realized to realized gas flow's continuity change, and then enlarged gas flow's accommodation range, in addition, set up special-shaped cavity 2131 to be first pitch arc 2133, second pitch arc 2134, first connecting wire 2135 and second connecting wire 2136, and first connecting wire 2135 and second connecting wire 2136 are tangent the setting with first pitch arc 2133 respectively, have made things convenient for the processing of special-shaped hole.

Further preferably, the special-shaped cavity 2131 is provided in a horn shape, and an end of the special-shaped cavity 2131 where the first arc 2133 is located has a smaller caliber, and an end of the special-shaped cavity 2131 where the second arc 2134 is located has a larger caliber, wherein the first connecting wire 2135 and the second connecting wire 2136 are respectively connected with two ends of the second arc 2134 through arcs.

It is further preferred that the diameter of the circle in which the second arc 2134 is located is smaller than the diameter of the first through hole 212.

In this embodiment, the special-shaped cavity 2131 is configured to be horn-shaped, and the knob 300 drives the valve core 200 to align with the second channel 120 before the end with the smaller caliber in the special-shaped cavity 2131 in the rotating process, and the diameter of the circle where the second arc 2134 is combined is smaller than the diameter of the first through hole 212, so as to realize continuous reduction of the gas flow and continuous adjustment.

It is further preferred that the first connecting lines 2135 are arranged in a straight line or in an arc with the second connecting lines 2136.

Preferably, an included angle formed by a line of the projection of the center of the first through hole 212 on the axis of the spool 200 and a line of the projection of the center of the third through hole 2132 on the axis of the spool 200 is 120 °.

In this embodiment, the included angle is set to 120 °, so that on one hand, the strength of the valve core 200 is ensured, and the influence on the overall strength of the valve core 200 due to the closer distance between the first through hole 212 and the second through hole 213 is avoided, and on the other hand, the convenience of using the gas regulating valve and the continuity of regulating the gas flow are improved.

Preferably, the valve core 200 includes a core 210, and the third channel 211 is disposed along an axial direction of the core 210, and the first through hole 212 and the second through hole 213 are disposed on a side wall of the core 210, wherein two ends of the core 210 are respectively connected with a bushing in a nested manner, namely, a first bushing 220 and a second bushing 230, and a sealing ring 240 is disposed between the first bushing 220 and the second bushing 230 and the side wall of the core 210.

Further preferably, a first annular groove 221 and a second annular groove 231 are correspondingly provided on the first bushing 220 and the second bushing 230 along the axial direction of the first bushing 220 and the second bushing 230, respectively, wherein the first annular groove 221 and the second annular groove 231 are respectively nested with a sealing ring 240.

In this embodiment, bushings are provided at both ends of the core 210, so that smoothness of the valve core 200 in the rotation process is ensured, the friction coefficient between the valve body 100 and the valve core 200 is reduced, and in addition, a sealing ring 240 is provided between the bushing and the core 210, so that tightness of the valve core 200 is ensured.

Further preferably, the number of the first annular grooves 221 is two, and the first annular grooves 221 are disposed up and down along the axial direction of the valve core 200, and each first annular groove 221 is embedded with a sealing ring 240.

Preferably, the valve body 100 is provided with the first marking 130 and the valve core 200 is provided with the second marking 250, wherein when the first marking 130 is aligned with the second marking 250, the first through hole 212 of the valve core 200 is aligned with the second channel 120 of the valve body 100 by adjusting the relative position between the knob 300 and the valve core 200, the gas flow reaches the maximum value, and thereafter, the gas flow gradually decreases until closing as the knob 300 rotates.

Further preferably, the second reticle 250 is disposed on the first bushing 220.

In the present embodiment, by providing the first and second markings 130 and 250 on the valve body 100 and the valve body 200, respectively, the initial position and the initial flow rate of the gas regulating valve can be determined, thereby improving the accuracy of gas flow rate regulation.

Preferably, a positioning part is arranged between the valve core 200 and the knob 300, wherein the positioning part comprises a positioning column 260 arranged on the valve core 200 and a positioning hole 310 correspondingly arranged on the knob 300, and nesting matching between the valve core 200 and the knob 300 is realized through polygonal matching between the positioning column 260 and the positioning hole 310.

Further preferably, the positioning posts 260 are disposed on the core 210.

In this embodiment, the positioning post 260 and the positioning hole 310 realize nesting cooperation between the valve core 200 and the knob 300 through polygonal cooperation, so that circumferential freedom between the valve core 200 and the knob 300 is limited, and synchronism of the knob 300 when driving the valve core 200 to rotate is ensured. In addition, the positioning column 260 and the positioning hole 310 adopt fool-proof design, and only one angle within 360 degrees can be matched with each other, so that the phenomenon of reverse assembly of the knob 300 in the assembly process is avoided.

Preferably, the knob 300 is provided with graduations of 0, 1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 7/8 and 1, respectively, for 9 flow indication graduations, wherein a flat angle is formed between the graduation 0 and the graduation 1.

Preferably, a limiting part is arranged between the valve core 200 and the knob 300, wherein the limiting part comprises a first limiting block 270 arranged on the valve core 200 and a second limiting block 320 correspondingly arranged on the knob 300, and the first limiting block 270 is in contact abutting fit with the second limiting block 320.

Further preferably, the first stopper 270 is disposed on the first bushing 220.

In this embodiment, the first limiting block 270 and the second limiting block 320 are matched to realize the gas flow in the initial test state of the gas regulating valve, so as to limit the regulating range of the gas flow, and further improve the accuracy of gas flow regulation.

It should be noted that the description of the present invention as it relates to "first", "second", "a", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise. The terms "coupled," "secured," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally formed, for example; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical solutions of the embodiments of the present invention may be combined with each other, but it is necessary to be based on the fact that those skilled in the art can implement the technical solutions, and when the technical solutions are contradictory or cannot be implemented, the combination of the technical solutions should be considered as not existing, and not falling within the scope of protection claimed by the present invention.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A gas regulating valve, comprising:

the knob is connected with the valve core, and is used for locking the connection between the knob and the valve core through the fastener, wherein the knob drives the valve core to rotate, so that the first through hole, the second through hole Kong Zhuge and the second channel are opposite and misplaced, and the adjustment of the gas flow is realized;

the second through hole comprises a special-shaped cavity formed by radial recession on the side wall of the valve core, and a third through hole is arranged at the bottom of the special-shaped cavity, wherein the third through hole is communicated with the third channel and is circularly arranged, and the aperture of the third through hole is smaller than that of the first through hole;

the special-shaped cavity comprises a first arc line, a second arc line, a first connecting line and a second connecting line, wherein the first arc line and the second arc line are oppositely arranged, the first connecting line and the second connecting line are connected with the first arc line and the second arc line, the first arc line coincides with the edge of the third through hole, the first connecting line and the second connecting line are respectively tangential to the first arc line, and the bending direction of the second arc line is consistent with that of the first arc line;

the special-shaped cavity is in a horn-shaped arrangement, the caliber of one end of the special-shaped cavity where the first arc line is located is smaller, the caliber of one end of the special-shaped cavity where the second arc line is located is larger, and the first connecting line and the second connecting line are respectively connected with the two ends of the second arc line through the arcs.

2. A gas regulating valve according to claim 1, wherein the line of the projection of the centre of the first through hole on the spool axis forms an angle of 120 ° with the line of the projection of the centre of the third through hole on the spool axis.

3. The gas regulating valve according to any one of claims 1 to 2, wherein the valve core comprises a core body, the third passage is arranged along the axial direction of the core body, the first through hole and the second through hole are arranged on the side wall of the core body, the two ends of the core body are respectively connected with a bushing in a nested manner, the bushing is respectively a first bushing and a second bushing, and a sealing ring is arranged between the first bushing and the second bushing and the side wall of the core body.

4. A gas regulating valve according to claim 3, wherein a first annular groove and a second annular groove are provided on the first bushing and the second bushing, respectively, in the axial direction of the first bushing and the second bushing, respectively, wherein the first annular groove and the second annular groove are respectively nested with a sealing ring.

5. A gas regulating valve according to any one of claims 1 to 2, wherein a positioning part is provided between the valve core and the knob, wherein the positioning part comprises a positioning column provided on the valve core and a positioning hole correspondingly provided on the knob, and the positioning column is matched with the positioning hole through a polygon.

6. A gas regulating valve according to any one of claims 1 to 2, wherein the knob is provided with graduations of 0, 1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 7/8 and 1, respectively, for a total of 9 flow indicating graduations, wherein a flat angle is formed between graduation 0 and graduation 1.

7. The gas regulating valve according to claim 6, wherein a limiting portion is provided between the valve core and the knob, the limiting portion comprises a first limiting block provided on the valve core and a second limiting block provided on the knob correspondingly, and the first limiting block is in contact abutting fit with the second limiting block.