CN113639063A

CN113639063A - Gas regulating valve

Info

Publication number: CN113639063A
Application number: CN202110922402.7A
Authority: CN
Inventors: 卢长根; 蔡艳兰; 王宁杰
Original assignee: Ningbo CRRC Times Electric Equipment Co Ltd
Current assignee: Zhuzhou CRRC Times Electric Co Ltd
Priority date: 2021-08-12
Filing date: 2021-08-12
Publication date: 2021-11-12
Anticipated expiration: 2041-08-12
Also published as: CN113639063B

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 communicated with each other are respectively arranged along the axial direction and the radial direction of the valve body; the valve core is nested in the first channel, a third channel is arranged along the axial direction of the valve core, and a first through hole and a second through hole which are communicated with the third channel are formed in the side wall of the valve core; the knob is connected with the valve core and locks the connection between the knob and the valve core through a fastener, wherein the valve core is driven to rotate through the knob, so that the first through hole and the second through hole are opposite to and staggered with the second channel one by one, 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-nature through hole are formed in the valve core, the gas flow is regulated under the action of the knob, the regulation is continuously arranged, and the process of 'sudden change' is avoided, so that the gas flow regulation range is expanded.

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 accurate control of anoxic aeration and the control of reflux ratio are problems which need to be solved for a long time, and the existing ball valve of UPVC is used, for example, a novel gas regulating valve disclosed by Chinese patent (CN202901350U), and the gas regulating valve changes the contact area of a horn-shaped opening and two cavities of a valve seat by rotating an adjusting rod. Although the gas regulating valve can realize on-off control and has a long service life, the flow regulating range is small, and the regulating accuracy is insufficient.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and provides a gas regulating valve which can enlarge the flow regulating range and improve the flow regulating accuracy.

The purpose of the invention can be realized 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 locks the connection between the knob and the valve core through a fastener, wherein the valve core is driven to rotate through the knob, so that the first through hole and the second through hole are opposite to and staggered with the second channel one by one, and the adjustment of the gas flow is realized.

In the above gas regulating valve, the second through hole includes a special-shaped cavity formed by radially recessing 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, the third through hole is arranged in a circular shape, and the aperture of the third through hole is smaller than that of the first through hole.

In foretell gas regulating valve, the dysmorphism chamber is including relative first pitch arc and the second pitch arc that sets up to and first connecting wire and the second connecting wire of connecting 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 respectively with the tangent setting of first pitch arc, the crooked direction of second pitch arc is unanimous with the crooked direction of first pitch arc.

In foretell gas regulating valve, the dysmorphism chamber is the setting of loudspeaker form, and the one end bore at first pitch arc place is less in the dysmorphism chamber, and the one end bore at second pitch arc place is great in the dysmorphism chamber, and wherein, first connecting wire passes through the circular arc with the second connecting wire and links to each other with the both ends of second pitch arc respectively.

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

In the above gas regulating valve, the valve core includes a core body, the third channel 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, wherein, bushings are respectively connected to the two ends of the core body in a nested manner, the bushings are respectively a first bushing and a second bushing, and a sealing ring is arranged between each of the first bushing and the second bushing and the side wall of the core body.

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

In the gas regulating valve, the positioning part is arranged between the valve core and the knob, wherein the positioning part comprises a positioning column arranged on the valve core and a positioning hole correspondingly arranged 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, which are respectively 0, 1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 7/8 and 1, and 9 flow indicating scales, wherein a flat angle is formed between the scale 0 and the scale 1.

In a foretell 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 and corresponding the second stopper that sets up on the knob, and first stopper and second stopper contact 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-type through hole are formed in the valve core, the gas flow is regulated under the action of the knob, and the regulation is continuously arranged without a 'sudden change' process, so that the gas flow regulation range is expanded.

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

(3) The special-shaped cavity is arranged to be horn-shaped, the knob drives the valve core to rotate, the end with the larger caliber in the special-shaped cavity is aligned with the second channel before the end with the smaller caliber, and the diameter of the circle where the second arc line is located is smaller than that of the first through hole, so that the gas flow is reduced continuously, and continuous adjustment is achieved.

(4) The included angle is set to be 120 degrees, so that the strength of the valve core is guaranteed, the overall strength of the valve core is prevented from being influenced due to the fact that the distance between the first through hole and the second through hole is close, and the convenience of the gas regulating valve and the continuity of gas flow regulation are improved.

(5) The two ends of the core are provided with the bushings, so that the smoothness of the valve core in the rotating process is guaranteed, the friction coefficient between the valve body and the valve core is reduced, and in addition, the sealing ring is arranged between the bushing and the core, so that the sealing performance of the valve core is guaranteed.

(6) The positioning columns and the positioning holes are matched in a polygonal mode to achieve nested matching between the valve core and the knob, the circumferential freedom degree between the valve core and the knob is limited, and synchronism of the knob when the valve core is driven to rotate is guaranteed. In addition, the positioning column and the positioning hole are in fool-proof design, and only one angle in a 360-degree range can be matched with each other, so that the phenomenon of reverse installation of the knob in the assembling process is avoided.

(7) The gas flow under the initial test state of the gas regulating valve is realized through the cooperation between the first limiting block and the second limiting block, 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 structural view of a gas regulating valve according to the present invention.

FIG. 2 is a schematic view of another aspect of a gas regulating valve of the present invention.

Fig. 3 is a sectional view a-a in fig. 2.

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

Fig. 5 is a schematic structural diagram of a core body in a preferred embodiment of the invention.

FIG. 6 is a schematic view of another perspective of the core in a preferred embodiment of the invention.

In the figure, 100, valve body; 110. a first channel; 120. a second channel; 130. a first reticle; 200. a valve core; 210. a core body; 211. a third channel; 212. a first through hole; 213. a second through hole; 2131. a profiled cavity; 2132. a third through hole; 2133. a first arc line; 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. a positioning column; 270. a first stopper; 300. a knob; 310. positioning holes; 320. and a second limiting block.

Detailed Description

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

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

As shown in fig. 1 to 6, the present invention provides a gas regulating valve, including:

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 is communicated with the second channel 120, 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 circular hole, and the second through hole 213 is a special-shaped hole;

the knob 300 is connected with the valve core 200 and locks the connection between the knob 300 and the valve core 200 through a fastener, wherein the valve core 200 is driven to rotate through the knob 300, so that the first through hole 212 and the second through hole 213 are opposite to and dislocated with the second channel 120 one by one, 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 staggered, 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, then the valve core 200 continuously rotates, so that 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 staggered.

According to the gas regulating valve provided by the invention, the conventional circular through hole and the opposite-shaped through hole are formed in the valve core 200, the gas flow is regulated under the action of the knob 300, the regulation is continuously arranged, and the process of 'sudden change' is avoided, so that the gas flow regulation range is expanded.

Preferably, the second through hole 213 includes a special-shaped cavity 2131 formed by radially recessing the side wall of the valve element 200, and a third through hole 2132 is disposed on the bottom of the special-shaped cavity 2131, wherein the third through hole 2132 is communicated with the third channel 211, the third through hole 2132 is circularly disposed, and the aperture of the third through hole 2132 is smaller than that of the first through hole 212.

Further preferably, the shaped cavity 2131 includes a first arc 2133 and a second arc 2134 disposed opposite to each other, and a first connecting line 2135 and a second connecting line 2136 connecting the first arc 2133 and the second arc 2134, wherein the first arc 2133 coincides with an edge of the third through hole 2132, the first connecting line 2135 and the second connecting line 2136 are respectively disposed tangentially to the first arc 2133, and the second arc 2134 is curved in a direction consistent with the curved direction of the first arc 2133.

In this embodiment, by the arrangement of the special-shaped cavity 2131, transition of gas flow when the gas flow is adjusted from the first through hole 212 to the third through hole 2132 is achieved, so that continuous change of the gas flow is achieved, and an adjustment range of the gas flow is expanded, and in addition, the special-shaped cavity 2131 is arranged to be a first arc 2133, a second arc 2134, a first connecting line 2135 and a second connecting line 2136, and the first connecting line 2135 and the second connecting line 2136 are respectively arranged in a tangent manner with the first arc 2133, so that the special-shaped hole can be conveniently machined.

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

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 set to be horn-shaped, and the knob 300 drives the valve core 200 to rotate, so that the end with the larger caliber in the special-shaped cavity 2131 is aligned with the second channel 120 before the end with the smaller caliber, and the diameter of the circle where the second arc line 2134 is located is smaller than the diameter of the first through hole 212, thereby realizing continuous reduction of the gas flow and continuous adjustment.

Further preferably, the first connecting line 2135 and the second connecting line 2136 are arranged in a straight line or in an arc.

Preferably, an included angle formed by a connecting line of the circle centers of the first through hole 212 and the third through hole 2132 projected on the axis of the valve core 200 is 120 °.

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

Preferably, the valve core 200 includes a core 210, 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 bushings, namely a first bushing 220 and a second bushing 230, are respectively nested at two ends of the core 210, and a sealing ring 240 is disposed between each of 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 arranged 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 nested with the sealing ring 240, respectively.

In this embodiment, the bushings are disposed at the two ends of the core body 210, so as to ensure the smoothness of the valve core 200 during the rotation process, and reduce the friction coefficient between the valve body 100 and the valve core 200, and in addition, the sealing ring 240 is disposed between the bushings and the core body 210, so as to ensure the sealing performance of the valve core 200.

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

Preferably, a first gauge line 130 is provided on the valve body 100, and a second gauge line 250 is provided on the valve core 200, wherein when the first gauge line 130 is aligned with the second gauge line 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, and the gas flow rate reaches a maximum value, and thereafter, the gas flow rate gradually decreases until it is closed as the knob 300 is rotated.

Further preferably, a second gauge wire 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 spool 200, respectively, the initial position and the initial flow rate of the gas regulating valve can be determined, thereby improving the accuracy of the gas flow rate regulation.

Preferably, a positioning portion is disposed between the valve core 200 and the knob 300, wherein the positioning portion includes a positioning column 260 disposed on the valve core 200 and a positioning hole 310 correspondingly disposed on the knob 300, and the positioning column 260 and the positioning hole 310 realize a nested fit between the valve core 200 and the knob 300 through a polygonal fit.

Further preferably, the positioning post 260 is disposed on the core 210.

In this embodiment, the positioning column 260 and the positioning hole 310 are matched in a polygonal manner to realize the nesting fit between the valve core 200 and the knob 300, so that the circumferential degree of freedom between the valve core 200 and the knob 300 is limited, and the synchronism of the valve core 200 driven by the knob 300 is ensured. In addition, the positioning column 260 and the positioning hole 310 adopt a fool-proof design, and only one angle in a range of 360 degrees can be matched with each other, so that the phenomenon that the knob 300 is reversely installed in the assembling process is avoided.

Preferably, the knob 300 is provided with scales, which are respectively 0, 1/8, 1/4, 3/8, 1/2, 5/8, 3/4, 7/8 and 1, for 9 flow rate indication scales, wherein a flat angle is formed between the scale 0 and the scale 1.

Preferably, a limiting portion is disposed between the valve core 200 and the knob 300, wherein the limiting portion includes a first limiting block 270 disposed on the valve core 200 and a second limiting block 320 correspondingly disposed on the knob 300, and the first limiting block 270 and the second limiting block 320 are in contact-type abutting fit.

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

In this embodiment, the gas flow rate of the gas regulating valve in the initial test state is realized through the cooperation between the first limiting block 270 and the second limiting block 320, so that the regulating range of the gas flow rate is limited, and the precision of the gas flow rate regulation is further improved.

It should be noted that the descriptions related to "first", "second", "a", etc. in the present invention are only used for descriptive purposes and are not to be construed as indicating or implying relative importance or implicit indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. The terms "connected," "fixed," and the like are to be construed broadly, e.g., "fixed" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. A gas regulating valve, comprising:

2. The gas regulating valve according to claim 1, wherein the second through hole comprises a shaped cavity formed by radially recessing the side wall of the valve element, and a third through hole is formed in the bottom of the shaped cavity, wherein the third through hole is communicated with the third channel, the third through hole is arranged in a circular shape, and the diameter of the third through hole is smaller than that of the first through hole.

3. A gas regulating valve according to claim 2, wherein the shaped chamber comprises a first arc and a second arc disposed opposite to each other, and a first connecting line and a second connecting line connecting the first arc and the second arc, wherein the first arc coincides with the edge of the third through hole, the first connecting line and the second connecting line are respectively disposed tangentially to the first arc, and the second arc is curved in the same direction as the first arc.

4. A gas regulating valve according to claim 3, wherein the shaped cavity is formed in a horn shape, and the first arc line in the shaped cavity has a smaller diameter at one end and the second arc line in the shaped cavity has a larger diameter at one end, and wherein the first connecting line and the second connecting line are respectively connected to both ends of the second arc line through circular arcs.

5. The gas regulating valve according to claim 2, wherein a line connecting the projection of the center of the first through hole on the spool axis forms an included angle of 120 ° with a line connecting the projection of the center of the third through hole on the spool axis.

6. The gas regulating valve according to any one of claims 1 to 5, wherein the valve element comprises a core, and the third passage is provided along an axial direction of the core, and the first through hole and the second through hole are provided in a side wall of the core, wherein bushings, i.e., the first bushing and the second bushing, are respectively nested at both ends of the core, and a seal ring is provided between each of the first bushing and the second bushing and the side wall of the core.

7. The gas regulating valve according to claim 6, wherein a first annular groove and a second annular groove are correspondingly arranged on the first bushing and the second bushing respectively along the axial direction of the first bushing and the second bushing, and the first annular groove and the second annular groove are respectively nested with a sealing ring.

8. The gas regulating valve according to any one of claims 1 to 5, wherein a positioning portion is disposed between the valve core and the knob, wherein the positioning portion comprises a positioning post disposed on the valve core and a positioning hole correspondingly disposed on the knob, and the positioning post and the positioning hole are matched by a polygon.

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

10. The gas regulating valve according to claim 9, wherein a limiting portion is disposed between the valve core and the knob, wherein the limiting portion comprises a first limiting block disposed on the valve core and a second limiting block correspondingly disposed on the knob, and the first limiting block and the second limiting block are in contact-type abutting engagement.