CN217355714U

CN217355714U - Adjustable back pressure flow regulating valve

Info

Publication number: CN217355714U
Application number: CN202220873564.6U
Authority: CN
Inventors: 邱文杰
Original assignee: Suzhou Xindao Power Equipment Technology Co ltd
Current assignee: Suzhou Xindao Power Equipment Technology Co ltd
Priority date: 2022-04-15
Filing date: 2022-04-15
Publication date: 2022-09-02
Anticipated expiration: 2032-04-15

Abstract

The utility model relates to a back pressure flow control valve with adjustable, it includes: the valve body, set up first inlet channel, transition passageway and the first passageway of giving vent to anger in the valve body, set up in the valve body and with the pressure chamber that first inlet channel and transition passageway link to each other, set up in the valve body and with the regulation chamber that transition passageway and the first passageway of giving vent to anger link to each other, set up and be in pressure adjustment mechanism and the movably ejector pin of wearing to establish in the transition passageway in the pressure chamber. The utility model discloses backpressure flow control valve with adjustable simple structure controls the gas flow in the transition passageway through removing the ejector pin that sets up at the regulation chamber, changes different pressure adjustment mechanism according to the gas pressure of difference, realizes the automatic switching of valve port under the assigned pressure, and easy operation can the gaseous flow of artificial control moreover.

Description

Adjustable back pressure flow regulating valve

Technical Field

The utility model belongs to the technical field of flow control valve, concretely relates to backpressure flow control valve with adjustable.

Background

Control valves, also known as control valves, are used in modern plants for the regulated distribution of a flowing medium.

The existing regulating valve is complex in structure, a valve port can only be manually opened or closed, the valve port cannot be automatically opened according to different gas pressures, and the flow of gas cannot be regulated in real time in the gas circulation process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an adjustable back pressure flow control valve in order to overcome the not enough of prior art.

In order to achieve the above purpose, the utility model adopts the technical scheme that: an adjustable back pressure flow control valve comprising:

the valve body, set up first inlet channel, transition passageway and the first passageway of giving vent to anger in the valve body, set up in the valve body and with the pressure chamber that first inlet channel and transition passageway link to each other, set up in the valve body and with the regulation chamber that transition passageway and the first passageway of giving vent to anger link to each other, set up and be in pressure adjustment mechanism and the movably ejector pin of wearing to establish in the transition passageway in the pressure chamber.

Optimally, the valve body further comprises an air inlet pipe and an air outlet pipe which are fixed on the valve body, a second air inlet channel which is arranged on the air inlet pipe and is connected with the first air inlet channel, a second air outlet channel which is arranged on the air outlet pipe and is connected with the first air outlet channel, a hand wheel fixing seat which is fixed on one side of the adjusting cavity, a conical head which is fixed at one end of the ejector rod, a hand wheel which is fixed at the other end of the ejector rod and a sealing ring which is arranged between the ejector rod and the hand wheel fixing seat.

Preferably, the pressure adjusting mechanism comprises a plug connector inserted at the bottom of the pressure cavity, a lower stop member fixed at the bottom of the inner side of the plug connector, an upper stop member arranged at the top of the pressure cavity, a spring arranged between the lower stop member and the upper stop member, a sealing groove arranged at the outer side of the upper stop member, and a sealing ring arranged in the sealing groove.

Preferably, the diameter of the first air inlet channel is equal to the diameter of the second air inlet channel, and the diameter of the first air outlet channel is equal to the diameter of the second air outlet channel.

Optimally, the inner side of the hand wheel fixing seat is provided with an internal thread, and the outer side of the ejector rod is provided with an external thread matched with the internal thread.

Optimally, the sealing ring and the sealing ring are made of rubber.

Preferably, the diameter of the bottom surface of the conical head is larger than the diameter of the transition passage.

Preferably, the sealing ring bears against the inner side wall of the pressure chamber.

Because of the application of above-mentioned technical scheme, compared with the prior art, the utility model has the following advantage:

the adjustable back pressure flow regulating valve has simple structure, the transition channel is additionally arranged between the first air inlet channel and the first air outlet channel, the pressure cavity is additionally arranged between the first air inlet channel and the transition channel, and the automatic conduction of the first air inlet channel and the transition channel is realized through the pressure regulating mechanism arranged in the pressure cavity; the regulating cavity is additionally arranged between the transition channel and the first air outlet channel, the gas flow in the transition channel is controlled by moving the ejector rod arranged in the regulating cavity, different pressure regulating mechanisms are replaced according to different gas pressures, the automatic opening and closing of the valve port under the specified pressure are realized, the operation is simple, and the flow of gas can be artificially controlled.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a partial structure of the present invention;

FIG. 3 is a schematic view of a partial structure of the present invention;

description of reference numerals:

1. a valve body; 2. a first air intake passage; 3. a transition passage; 4. a first air outlet channel; 5. an air inlet pipe; 6. a second intake passage; 7. an air outlet pipe; 8. a second air outlet channel; 9. a pressure chamber; 10. a lower stop; 11. a spring; 12. an upper stop; 13. a sealing groove; 14. a seal ring; 15. an adjustment chamber; 16. a hand wheel fixing seat; 17. a top rod; 18. a hand wheel; 19. a conical head; 20. a seal ring; 21. and (7) a plug connector.

Detailed Description

The invention will be further described with reference to examples of embodiments shown in the drawings.

As shown in fig. 1-3, the adjustable back pressure flow control valve of the present invention is a schematic structural diagram, and is generally used in a gas dosing system for real-time adjustment of gas flow. The gas-liquid separator comprises a valve body 1, a first gas inlet channel 2, a transition channel 3, a first gas outlet channel 4, a gas inlet pipe 5, a second gas inlet channel 6, a gas outlet pipe 7, a second gas outlet channel 8, a pressure cavity 9, a pressure adjusting mechanism, an adjusting cavity 15, a hand wheel fixing seat 16, a push rod 17, a hand wheel 18, a conical head 19 and a sealing ring 20.

The valve body 1 is made of gray cast iron, the gray cast iron has good casting and cutting performances and good wear resistance, and the valve body is integrally manufactured through a casting process. First inlet channel 2, transition passageway 3 and first outlet channel 4 offer on valve body 1 (first inlet channel 2 and first outlet channel 4 are parallel to each other, and first inlet channel 2 is close to the top of valve body 1, and first outlet channel 4 is close to the bottom of valve body 1, and transition passageway 3 sets up at the middle part of valve body 1, and is mutually perpendicular with one-level inlet channel 2). Intake pipe 5 is fixed at the top of valve body 1, and second inlet passage 6 is seted up in intake pipe 5 and is linked to each other with first inlet passage 2 (outside gas flows in from intake pipe 5, gets into first inlet passage 2 through second inlet passage 6, and first inlet passage 2's diameter equals second inlet passage 6's diameter, makes things convenient for gaseous circulation, prevents that gaseous backward flow from appearing). The bottom at valve body 1 is fixed to outlet duct 7, and second outlet channel 8 is seted up on outlet duct 7 and is linked to each other with first outlet channel 4 (in gaseous 3 inflow first outlet channel 4 through the transition passageway, then flow out from second outlet channel 8, the diameter of first outlet channel 4 equals the diameter of second outlet channel 8, makes things convenient for gaseous circulation, prevents that gaseous backward flow from appearing).

The pressure chamber 9 is arranged in the valve body 1 and the first inlet channel 2 is connected to the transition channel 3. The pressure adjusting mechanism is arranged in the pressure cavity 9 and used for opening or closing the first air inlet channel 2, and when the air inlet pressure is greater than the set pressure, the pressure adjusting mechanism is opened, and at the moment, the gas flows to the transition channel 3 from the first air inlet channel 2; otherwise, back pressure is formed, and the pressure adjusting mechanism cannot be opened, and comprises a lower stop piece 10, an upper stop piece 12, a spring 11, a sealing groove 13, a sealing ring 14 and a plug piece 21. The plug-in connector 21 is inserted at the bottom of the pressure chamber 9 (the plug-in connector 21 is in interference fit with the valve body 1 and is connected with the pressure chamber 9). The lower stop 10 is fixed at the bottom of the inner side of the plug-in piece 21, the upper stop 12 is arranged at the top of the pressure cavity 9, the spring 11 is arranged between the lower stop 10 and the upper stop 12 (the upper stop 12 and the lower stop 10 are both concave, the openings of the upper stop 12 and the lower stop 10 face inward, the spring 11 is arranged between the concave upper stop 12 and the lower stop 10, the spring 11 is prevented from inclining in the compression process of the spring 11, the top of the upper stop 12 is abutted against the first air inlet channel 2, the side surface of the upper stop 12 is abutted against the port of the transition channel 3, therefore, gas is going to flow to the transition channel 3 through the first air inlet channel 2, and the spring 11 needs to be compressed firstly, so that the upper stop 12 leaves the first air inlet channel 2 and the transition channel 3). The sealing groove 13 is arranged at two sides of the upper stop piece 12, the sealing ring 14 is arranged in the sealing groove 13 (the cross section of the sealing groove 13 is semicircular, the outer diameter of the sealing ring 14 is equal to the inner diameter of the pressure cavity 9, when gas is injected from the gas inlet pipe 5, if the gas pressure in the first gas inlet channel 2 reaches a set pressure value, the spring 11 is compressed, the upper stop piece 12 in the pressure cavity 9 moves downwards, the gas in the first gas inlet channel 2 flows to the transition channel 3 through the pressure cavity 9, the sealing ring 14 at two sides of the upper stop piece 12 is made of rubber and plays a role of sealing to prevent the gas from flowing out from a gap between the upper stop piece 12 and the pressure cavity 9, because the plug piece 21 is inserted at the bottom of the valve body 1, the plug piece 21 can be detached and the spring 11 with different elastic coefficients can be replaced, thereby realizing the automatic conduction of the gas with different pressures, specifically, the upper stop piece 12 is to be flush with the bottom of the transition channel 3, the distance a for pressing the upper stop 12 is required, when the gas under the pressure a flows into the first air inlet channel 2, and at this time, in order to open the pressure adjusting mechanism, the spring 11 under the corresponding pressure needs to be selected, and the elastic coefficient k of the spring 11 is equal to a/a; when the gas under the pressure B flows into the first intake passage 2, similarly, the spring 11 under the corresponding pressure needs to be selected in advance, and the elastic coefficient k of the spring 11 is equal to B/a).

The regulating cavity 15 is opened in the valve body 1 and connected with the transition passage 3 and the first air outlet passage 4. The hand wheel fixing seat 16 is fixed on one side of the adjusting cavity 15. The ejector rod 17 is movably arranged in the hand wheel fixing seat 16 in a penetrating way, the conical head 19 is fixed at one end of the ejector rod 17, the hand wheel 18 is fixed at the other end of the ejector rod 17 (the inner side of the hand wheel fixing seat 16 is provided with internal threads, and the outer side of the ejector rod 17 is provided with external threads matched with the internal threads, therefore, the ejector rod 17 can move back and forth along the hand wheel fixing seat 16 by rotating the hand wheel 18, the conical head 19 also moves back and forth in the transition channel 3 under the driving of the ejector rod 17, the bottom surface of the conical head 19 is circular, the diameter of the bottom surface of the conical head 19 is larger than that of the transition channel 3, the position of the conical head 19 in the transition channel 3 can be manually adjusted by rotating the hand wheel 18, when gas does not need to flow out, the conical head 19 is completely screwed into the transition channel 3, because the diameter of the bottom surface of the conical head 19 is larger than that of the transition channel 3 is completely contacted with the side surface of the conical head 19, the transition passage 3 can be completely blocked; if the maximum gas outflow is needed, the conical head 19 is completely screwed out of the transition channel 3, and at the moment, the gas in the transition channel 3 flows into the regulating cavity 15 and then flows out of the first gas outlet channel 4; when a proper amount of gas is required to flow out, the conical head 19 is partially screwed into the transition passage 3, at the moment, the transition passage 3 is not completely contacted with the side surface of the conical head 19, and the gas can flow out from the gap between the transition passage 3 and the side surface of the conical head 19). The sealing ring 20 is arranged between the ejector rod 17 and the hand wheel fixing seat 16, and the sealing ring 20 is made of rubber (because the ejector rod 17 is in threaded connection with the hand wheel fixing seat 16, the sealing ring 20 is arranged to prevent gas from flowing out from a threaded gap, and a sealing effect is achieved).

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. An adjustable back pressure flow control valve, characterized in that it comprises:

valve body (1), set up first inlet channel (2), transition passageway (3) and first outlet channel (4) in valve body (1), set up in valve body (1) and with pressure chamber (9) that first inlet channel (2) and transition passageway (3) link to each other, set up in valve body (1) and with adjustment chamber (15), the setting that transition passageway (3) and first outlet channel (4) link to each other are in pressure adjustment mechanism and the movably of wearing to establish in pressure chamber (9) ejector pin (17) in transition passageway (3).

2. The adjustable back pressure flow regulator valve as claimed in claim 1, wherein: it is still including fixing intake pipe (5) and outlet duct (7), seting up on valve body (1) intake pipe (5) go up and with second inlet channel (6), the seting up that first inlet channel (2) link to each other outlet duct (7) go up and with second outlet channel (8) that first outlet channel (4) link to each other, fix hand wheel fixing base (16) of adjusting chamber (15) one side, fix conical head (19) of ejector pin (17) one end, fix hand wheel (18) and the setting of the ejector pin (17) other end are in sealing washer (20) between ejector pin (17) and hand wheel fixing base (16).

3. The adjustable back pressure flow regulator valve as claimed in claim 2, wherein: the pressure adjusting mechanism comprises a plug connector (21) inserted at the bottom of the pressure cavity (9), a lower stop piece (10) fixed at the bottom of the inner side of the plug connector (21), an upper stop piece (12) arranged at the top of the pressure cavity (9), a spring (11) arranged between the lower stop piece (10) and the upper stop piece (12), a sealing groove (13) arranged on the outer side of the upper stop piece (12), and a sealing ring (14) arranged in the sealing groove (13).

4. The adjustable back pressure flow regulator valve as claimed in claim 2, wherein: the diameter of the first air inlet channel (2) is equal to that of the second air inlet channel (6), and the diameter of the first air outlet channel (4) is equal to that of the second air outlet channel (8).

5. The adjustable back pressure flow control valve of claim 2, wherein: the inner side of the hand wheel fixing seat (16) is provided with an internal thread, and the outer side of the ejector rod (17) is provided with an external thread matched with the internal thread.

6. The adjustable back pressure flow regulator valve as claimed in claim 3, wherein: the sealing ring (14) and the sealing ring (20) are made of rubber.

7. The adjustable back pressure flow regulator valve as claimed in claim 2, wherein: the diameter of the bottom surface of the conical head (19) is larger than that of the transition channel (3).

8. The adjustable back pressure flow regulator valve as claimed in claim 3, wherein: the sealing ring (14) is tightly attached to the inner side wall of the pressure cavity (9).