Oxygen supply flow regulating valve

Abstract

The invention discloses an oxygen supply flow regulating valve, relates to the field of valves, and in the gas source access process, the device realizes flow control through the cooperation of a valve core assembly and a valve seat assembly, is matched with step-by-step regulation of a small hole, a middle hole and a large hole, and can quickly adapt to different flow requirements. Meanwhile, through cooperation with the adjusting rod, the ruler and the marking needle, the communication state and the staggering degree of the throttling hole set can be accurately positioned, and the purpose of accurately controlling the flow is achieved. In addition, the auxiliary gas cylinder in the device is always kept in a full-load state, so that oxygen supply can be compensated immediately when the pressure of the gas source is insufficient or interrupted, and the flow is always constant. Through the cooperation of the piston ring and the tension spring, the compensation channel is automatically opened when the air pressure is reduced to a certain threshold value, then automatic seamless compensation is achieved, and the stability of the output flow is kept. By means of the design, the stability and safety of the device are greatly improved, and risks caused by oxygen supply interruption are effectively avoided.

Description

Technical Field

[0001] The invention relates to the field of valves, and in particular to an oxygen supply flow regulating valve. Background Art

[0002] The oxygen supply flow control valve plays a key role in oxygen delivery control. Its design must have precise flow control capabilities to ensure that oxygen can enter industrial equipment or the human body in a stable and appropriate amount. The control valve in the prior art usually controls the flow by rotation, but when meeting the needs of high-precision control, it often requires a large number of rotations to achieve fine-tuning of the flow, resulting in a slow control process. The valve structure that can quickly adjust the flow often lacks the accuracy of small-amount adjustment, making it difficult to take into account both wide-range flow control and high-precision control.

[0003] In the industrial field, the supply of oxygen affects both the reaction rate and safety. If the oxygen supply is too large, it may cause combustion or excessive reaction, causing danger; if the oxygen supply is insufficient, the reaction progresses slowly, the process efficiency is limited, and incomplete reaction may occur. In addition, traditional oxygen supply flow regulation systems often rely on oxygen cylinders as a source of oxygen in mobile scenarios, but the pressure of oxygen cylinders will gradually decrease with oxygen consumption. When the pressure of the oxygen cylinder drops below a certain value and the opening of the regulating valve remains unchanged, the oxygen flow rate also decreases. Therefore, traditional systems often need to use electronic control systems to achieve flow compensation regulation. However, when replacing gas cylinders, there will be intermittent oxygen supply, and it is difficult to continuously ensure a stable oxygen supply, which poses a challenge to the security of continuous operation of key equipment. Summary of the invention

[0004] The purpose of the present invention is to propose an oxygen supply flow regulating valve in order to solve the problems of coordination and unification of rapid flow regulation and precise flow regulation in the current flow regulation process, linear change of flow in the process of gas source pressure change in the current flow regulation process, and the existence of oxygen supply window period when the gas source is replaced.

[0005] In order to achieve the above object, the present invention adopts the following technical solution: an oxygen supply flow regulating valve, comprising:

[0006] One end of the valve body is connected to the gas source, and the other end is connected to an auxiliary gas cylinder. The valve body transmits part of the high-pressure oxygen from the gas source in one direction and stores it in the auxiliary gas cylinder.

[0007] The valve seat assembly seals and slides in the valve body, moves under the action of the gas source pressure, and resets when the pressure is lower than the preset value;

[0008] The valve core assembly is slidably arranged on the inner wall of the valve seat assembly, and the valve core assembly rotates horizontally or slides vertically on the inner wall of the valve seat assembly, and the gas flow rate is controlled by horizontal staggering and vertical staggering respectively;

[0009] The regulating assembly is rotatably arranged on the top of the valve body, fixedly connected to the inner wall of the valve core assembly and controls the horizontal rotation angle and vertical sliding distance of the valve core assembly;

[0010] The side walls of the valve seat assembly and the valve core assembly are both provided with throttling hole groups that cooperate with each other;

[0011] The valve seat assembly slides to the lowest position under high pressure, and resets when the gas source pressure drops to a point where oxygen cannot be supplied continuously and stably. When resetting, the valve body automatically connects to the auxiliary gas cylinder to continuously supply oxygen when the gas source is replaced.

[0012] As a further description of the above technical solution: the valve body includes an upper shell and a lower shell threadedly fitted on the inner wall of the upper shell, the arc-shaped side wall of the upper shell is integrally formed with an air inlet end and a compensation end, and the compensation end is connected to the auxiliary gas cylinder.

[0013] As a further description of the above technical solution: the upper shell includes a first base, an annular sealing chamber is opened in the first base, a sealing plug is arranged on one side of the annular sealing chamber, and the sealing plug seals and penetrates a pickup, and one end of the pickup is located in the annular sealing chamber;

[0014] The lower shell comprises a second base body threadedly engaged with the inner wall of the first base body, a gas outlet is installed through the bottom of the second base body, and a plurality of supporting ribs for supporting the valve seat assembly are integrally formed on the inner wall of the second base body.

[0015] As a further description of the above technical solution: the air intake end comprises an air intake pipe integrally formed with the first substrate, a first joint is rotatably provided on one side of the air intake pipe, and a first one-way valve is provided on the inner wall of the air intake pipe;

[0016] The compensation end includes a three-way pipe integrally formed with the first base, both ends of the three-way pipe are connected to the inner wall of the first base, the other end of the three-way pipe is rotatably provided with a second joint, and the inner wall of one end of the three-way pipe connected to the first base is provided with a second one-way valve, and the inner wall thread of the second joint is matched with a converter for connecting an auxiliary gas cylinder.

[0017] As a further description of the above technical solution: the valve seat assembly includes a piston ring that seals and slides on the inner wall of the first base, the lower surface of the piston ring is fixedly connected to an inner cylinder, the surface of the inner cylinder is fixedly connected to an outer cylinder that fits and slides on the inner wall of the first base, the arc-shaped side wall of the outer cylinder is provided with a plurality of flow holes that are connected to one end of a three-way pipe, the upper surface of the piston ring and the inner wall of the first base are jointly fixed with a tension spring, and the outer cylinder fits and slides on the surface of the valve core assembly and the adjustment assembly.

[0018] As a further description of the above technical solution: the adjustment assembly includes a threaded sleeve that is sealed and penetrates and rotates on the top of the first base, the inner wall of the threaded sleeve is threaded with a valve stem assembly, the bottom end of the valve stem assembly is fixedly connected to the inner wall of the valve core assembly, the surface of the valve stem assembly is penetrated by a guide tube, the top end of the guide tube is fixedly connected to the inner wall of the first base, the arc-shaped side wall of the guide tube is provided with a plurality of oxygen through holes for gas circulation, and the inner wall of the guide tube is provided with a spring.

[0019] As a further description of the above technical solution: the oxygen perforation includes a main perforation and a compensation perforation, and the compensation perforation is closed by the inner cylinder for being connected to the three-way pipe through the flow hole.

[0020] As a further description of the above technical solution: the valve stem assembly includes an adjusting rod threadedly engaged with the inner wall of the threaded sleeve, the bottom end of the adjusting rod is fixedly connected to a rotating block, the valve stem assembly also includes a guard frame fixedly connected to the surface of the upper shell body, one side of the guard frame is fixedly connected to a ruler, and the top end of the rotating block is fixedly connected to a marking pin that cooperates with the ruler.

[0021] As a further description of the above technical solution: the valve core assembly includes a valve core body fixedly connected to the bottom end of the regulating rod, the surface of the valve core body is fixedly connected to a core seat, the lower surface of the core seat is fixedly connected to a closed ring that fits and slides on the inner wall of the outer tube, and the upper surface of the core seat is fixedly connected to a core ring that fits and slides on the inner wall of the outer tube.

[0022] As a further description of the above technical solution: the throttling hole groups are respectively arranged on the side walls of the core ring and the outer cylinder, the throttling hole groups include small holes, medium holes and large holes, and when one group of the small holes, medium holes and large holes corresponding to the two throttling hole groups is connected, the other two groups are in a staggered state;

[0023] The scale is aligned with the small hole, the middle hole and the large hole corresponding to the outer cylinder, and the marking needle is aligned with the small hole, the middle hole and the large hole corresponding to the core ring.

[0024] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0025] When the present solution is used, the small holes, medium holes and large holes corresponding to the scale and the outer cylinder are aligned, and the scale needle and the small holes, medium holes and large holes corresponding to the core ring are aligned. By rotating the rotating block of the valve stem assembly, the scale needle on the surface of the rotating block is aligned with the scale, and the different ends of the scale needle and the different ends of the scale respectively correspond to the overlap of the two small holes, medium holes and large holes matched by the outer cylinder and the core ring. When the two small holes overlap, the flow rate is at the lowest, and when the two large holes overlap, the flow rate is the largest. The number of small holes, medium holes and large holes is several, and rapid flow switching control can be achieved. In different flow modes, the threaded sleeve is rotated. When the threaded sleeve rotates, it can change the height of the adjusting rod under the cooperation with the thread of the adjusting rod. When the height of the adjusting rod changes, the throttling hole groups on the surface of the core ring and the outer cylinder are staggered, so that the throttling hole groups with different widths and apertures can be adjusted. This method can achieve rapid flow regulation and can perform precise flow control in different modes to meet different needs.

[0026] At the same time, when the present invention is connected to the gas source, the gas source is in a fully loaded state, so that the high-pressure gas passes through the first one-way valve into the valve body, and then passes through the compensation end and the second one-way valve inside it into the auxiliary gas cylinder. Based on the function of the second one-way valve, the auxiliary gas cylinder always maintains the maximum pressure state with the gas source, and the reduction of the gas source pressure will not affect the auxiliary gas cylinder. Therefore, each time the gas source is connected to the auxiliary gas cylinder, oxygen can be automatically loaded and maintained in the storage state. As the pressure in the gas source slowly decreases, the pressure on the piston ring decreases, and the tension spring gradually moves the piston ring very slowly. When the piston ring moves, it moves the outer cylinder synchronously upward. At this time, the throttle hole group on the surface of the outer cylinder and the throttle hole group on the surface of the core ring are staggered to gradually increase their opening, thereby achieving pressure reduction and increased opening to achieve constant flow rate.

[0027] At the same time, if the gas source pressure drops to a certain threshold and the flow rate cannot be guaranteed to be stable through opening compensation, the piston ring will move the outer cylinder upward to a certain position, and the inner cylinder will also move synchronously to expose the compensation perforation, and connect it to the three-way pipe through the flow hole of the outer cylinder. At this time, the high-pressure oxygen in the compensation gas cylinder enters the valve body and will not leak under the action of the first one-way valve, so the oxygen continues to be supplied, realizing a seamless oxygen supply operation in the gas source replacement process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the present invention;

[0030] Figure 3 It is a three-dimensional structural schematic diagram of the valve body of the present invention;

[0031] Figure 4This is a schematic diagram of the explosion structure of the valve body of the present invention;

[0032] Figure 5 It is a schematic diagram of the three-dimensional cross-sectional structure of the valve body of the present invention;

[0033] Figure 6 It is a schematic diagram of the cross-sectional structure of the valve body of the present invention;

[0034] Figure 7 It is a schematic diagram of the three-dimensional cross-sectional structure of the valve body of the present invention;

[0035] Figure 8 It is a three-dimensional structural schematic diagram of three modes of the valve stem assembly of the present invention;

[0036] Fig. 9 It is a schematic diagram of three modes of connection states of the throttle hole group on the surface of the outer cylinder and the core ring of the present invention;

[0037] Fig.10 It is a schematic diagram of the connection state of the throttling hole group on the surface of the outer cylinder and the core ring in the cross-section state of the present invention.

[0038] Legend:

[0039] 10. Valve body; 11. Upper shell; 111. First base; 112. Annular sealing chamber; 113. Sealing plug; 114. Pickup; 12. Air inlet end; 121. Air inlet pipe; 122. First joint; 123. First one-way valve; 13. Compensation end; 131. Three-way pipe; 132. Second joint; 133. Adapter; 134. Second one-way valve; 14. Lower shell; 141. Second base; 142. Air outlet end; 143. Support ribs;

[0040] 20. Valve core assembly; 21. Core seat; 22. Valve core body; 23. Closing ring; 24. Core ring;

[0041] 30. Valve seat assembly; 31. Piston ring; 32. Inner cylinder; 33. Outer cylinder; 34. Flow hole; 35. Tension spring;

[0042] 40. Adjustment assembly; 41. Threaded sleeve; 42. Valve stem assembly; 421. Adjustment rod; 422. Rotating block; 423. Scale; 424. Guard; 425. Marking needle; 43. Guide tube; 44. Spring; 45. Oxygen perforation; 451. Main perforation; 452. Compensation perforation;

[0043] 50, throttle hole group; 51, small hole; 52, medium hole; 53, large hole;

[0044] 60. Auxiliary gas cylinder. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0046] like Figure 1-Figure 10 As shown, the present invention provides: an oxygen supply flow regulating valve, comprising a valve body 10, wherein one end of the valve body 10 is connected to a gas source, and the other end is connected to an auxiliary gas cylinder 60, the valve body 10 unidirectionally transmits part of the high-pressure oxygen of the gas source and stores it in the auxiliary gas cylinder 60; the valve seat assembly 30 is sealed and slides in the valve body 10, moves under the action of the gas source pressure, and resets when the pressure is lower than a predetermined value; the valve core assembly 20 is slidably arranged on the inner wall of the valve seat assembly 30, the valve core assembly 20 rotates horizontally on the inner wall of the valve seat assembly 30, and the valve core assembly 20 can slide vertically on the inner wall of the valve seat assembly 30, and the gas passing amount is controlled by horizontal staggering and vertical staggering respectively; the regulating assembly 40 is rotatably arranged on the top of the valve body 10, fixedly connected to the inner wall of the valve core assembly 20 and controls the horizontal rotation angle and vertical sliding distance of the valve core assembly 20; the side walls of the valve seat assembly 30 and the valve core assembly 20 are both provided with a throttle hole group 50 that cooperates with each other;

[0047] The valve seat assembly 30 slides to the lowest position under high pressure. When the gas source pressure drops to a level that makes it impossible to continuously and stably supply oxygen, the valve seat assembly 30 resets. When resetting, the valve body 10 automatically connects to the auxiliary gas cylinder 60 to continuously supply oxygen when the gas source is replaced.

[0048] Specifically, Figure 2 and Figure 5 As shown: the valve body 10 includes an upper shell 11 and a lower shell 14 threadedly fitted on the inner wall of the upper shell 11 , the arcuate side wall of the upper shell 11 is integrally formed with an air inlet end 12 and a compensation end 13 , and the compensation end 13 is connected to the auxiliary gas cylinder 60 .

[0049] By providing the compensation end 13, the compensation end 13 can keep the gas source at the maximum gas pressure state to store high-pressure oxygen.

[0050] Specifically, Figure 6 As shown: the upper shell 11 includes a first base 111, an annular sealing chamber 112 is provided in the first base 111, a sealing plug 113 is provided on one side of the annular sealing chamber 112, and a pickup 114 is sealed and penetrated through the sealing plug 113, and one end of the pickup 114 is located in the annular sealing chamber 112;

[0051] The lower shell 14 includes a second base 141 threadedly engaged with the inner wall of the first base 111 , a gas outlet 142 is installed through the bottom of the second base 141 , and a plurality of supporting ribs 143 for supporting the valve seat assembly 30 are integrally formed on the inner wall of the second base 141 .

[0052] By setting up the annular sealing chamber 112, the annular sealing chamber 112 is in a relatively sealed state, and the noise in the valve body 10 can be clearly captured by the microphone 114 in the annular sealing chamber 112, and external noise interference can be avoided. If there is a sharp sound of leakage from the valve body 10, or the audio characteristics of the sound changes due to internal flow velocity changes can be captured and analyzed by the microphone 114, it can be connected to the intelligent monitoring system for operation guarantee, and it is convenient to monitor and alarm according to the use status of the valve body 10.

[0053] Specifically, Figure 6 and Figure 7 As shown: the air inlet end 12 comprises an air inlet pipe 121 integrally formed with the first substrate 111, a first joint 122 is rotatably provided on one side of the air inlet pipe 121, and a first one-way valve 123 is provided on the inner wall of the air inlet pipe 121;

[0054] The compensation end 13 includes a three-way pipe 131 integrally formed with the first base 111, both ends of the three-way pipe 131 are connected to the inner wall of the first base 111, the other end of the three-way pipe 131 is rotatably provided with a second joint 132, and the inner wall of one end of the three-way pipe 131 connected to the first base 111 is provided with a second one-way valve 134, and the inner wall of the second joint 132 is threadedly matched with an adapter 133 for connecting the auxiliary gas cylinder 60.

[0055] The air inlet pipe 121 can be easily connected and disassembled through the first connector 122, and the first one-way valve 123 inside can keep the airflow flowing into the valve body 10 and prevent it from flowing back;

[0056] A second one-way valve 134 is provided at one end of the three-way pipe 131 so that the gas flow can flow into the auxiliary gas cylinder 60 , and when the inner cylinder 32 is offset from the compensating perforation 452 , the three-way pipe 131 discharges the oxygen inside the auxiliary gas cylinder 60 .

[0057] Specifically, Figure 6 As shown: the valve seat assembly 30 includes a piston ring 31 that seals and slides on the inner wall of the first base 111, the lower surface of the piston ring 31 is fixedly connected to an inner cylinder 32, the surface of the inner cylinder 32 is fixedly connected to an outer cylinder 33 that fits and slides on the inner wall of the first base 111, the arc-shaped side wall of the outer cylinder 33 is provided with a plurality of flow holes 34 that are connected to one end of the three-way pipe 131, the upper surface of the piston ring 31 and the inner wall of the first base 111 are jointly fixed with a tension spring 35, and the outer cylinder 33 fits and slides on the surface of the valve core assembly 20 and the adjustment assembly 40.

[0058] By setting the tension spring 35, the tension spring 35 can reset the outer cylinder 33. When the outer cylinder 33 moves to the lowest end and is limited and supported by the support ribs 143, it can maintain support for the outer cylinder 33 under a relatively high air pressure. When the air pressure decreases, the tension spring 35 can slowly contract and reset, and move the outer cylinder 33.

[0059] By adopting the inner cylinder 32, the inner cylinder 32 can be fitted on one side of the compensation through hole 452 and keep it in a sealed state.

[0060] Specifically, Figure 7 As shown: the adjustment assembly 40 includes a threaded sleeve 41 that is sealed and rotated through the top of the first base 111, and a valve stem assembly 42 is threaded through the inner wall of the threaded sleeve 41. The bottom end of the valve stem assembly 42 is fixedly connected to the inner wall of the valve core assembly 20, and a guide tube 43 is provided on the surface of the valve stem assembly 42. The top end of the guide tube 43 is fixedly connected to the inner wall of the first base 111, and the arc-shaped side wall of the guide tube 43 is provided with a plurality of oxygen through holes 45 for gas circulation, and the inner wall of the guide tube 43 is provided with a spring 44.

[0061] When the adjustment assembly 40 is in use, the rotation block 422 is pinched to maintain its position, and the threaded sleeve 41 is rotated at the same time. The threaded sleeve 41 can carry the adjustment rod 421 for lifting and lowering control in the threaded cooperation with the adjustment rod 421, wherein the spring 44 always keeps pressing on the core seat 21, keeps providing a pressure on the adjustment rod 421 and the threaded sleeve 41 supports the adjustment rod 421, and maintains its thread to ensure the sealing.

[0062] Specifically, Figure 4 As shown, the oxygen through hole 45 includes a main through hole 451 and a compensation through hole 452 . The compensation through hole 452 is closed by the inner cylinder 32 and is used to communicate with the three-way pipe 131 through the flow hole 34 .

[0063] The oxygen perforations 45 can allow the stored gas to pass through, wherein the main perforations 451 are used to connect the oxygen of the gas source, and the compensation perforations 452 are used to connect the oxygen of the auxiliary gas cylinder 60.

[0064] Specifically, Figure 8 As shown: the valve stem assembly 42 includes an adjusting rod 421 threadedly engaged with the inner wall of the threaded sleeve 41, the bottom end of the adjusting rod 421 is fixedly connected with a rotating block 422, the valve stem assembly 42 also includes a guard frame 424 fixedly connected to the surface of the upper shell 11, one side of the guard frame 424 is fixedly connected with a scale 423, and the top end of the rotating block 422 is fixedly connected with a marking needle 425 that cooperates with the scale 423.

[0065] By providing the rotating block 422 , the rotating block 422 can conveniently rotate the adjusting rod 421 , and the rotating angle of the rotating block 422 is determined by the cooperation between the marking needle 425 and the scale 423 .

[0066] Specifically, Figure 6 As shown: the valve core assembly 20 includes a valve core body fixedly connected to the bottom end of the adjusting rod 421, the surface of the valve core body is fixedly connected to a core seat 21, the lower surface of the core seat 21 is fixedly connected to a closed ring 23 that fits and slides on the inner wall of the outer tube 33, and the upper surface of the core seat 21 is fixedly connected to a core ring 24 that fits on the inner wall of the outer tube 33.

[0067] By setting a valve core body, the valve core body is fixed at the bottom end of the adjusting rod 421, and the valve core body is fixed to the inner wall of the core seat 21, playing the role of connecting the core seat 21 and the adjusting rod 421, wherein the core seat 21 can cooperate with the closed ring 23 fixed on the surface when moving up and down and rotating, and can cooperate with the throttling hole group 50 on the side wall of the outer cylinder 33 to perform partial sealing.

[0068] Specifically, Fig. 9 As shown: the throttle hole groups 50 are respectively arranged on the side walls of the core ring 24 and the outer cylinder 33, and the throttle hole groups 50 include small holes 51, middle holes 52 and large holes 53, and when one group of the small holes 51, middle holes 52 and large holes 53 corresponding to two throttle hole groups 50 is connected, the other two groups are in a staggered state;

[0069] The scale 423 is aligned with the small hole 51 , the middle hole 52 and the large hole 53 corresponding to the outer cylinder 33 , and the marking needle 425 is aligned with the small hole 51 , the middle hole 52 and the large hole 53 corresponding to the core ring 24 .

[0070] By setting two throttling hole groups 50, the small holes 51, the middle holes 52 and the large holes 53 of the two throttling hole groups 50 can be aligned and connected with each other, and when one of the small holes 51, the middle holes 52 and the large holes 53 is in a connected state, the other two are in a closed state. The scale 423 is aligned with the throttling hole group 50 of the outer cylinder 33, and the marking needle 425 is aligned with the throttling hole group 50 on the surface of the core ring 24, so that only the alignment angle of the marking needle 425 and the scale 423 can be controlled to accurately control the staggered state of the two throttling hole groups 50 on the surface of the core ring 24 and the outer cylinder 33, thereby realizing rapid response adjustment of the flow state.

[0071] When the present solution is in use, the scale 423 is aligned with the small holes 51, the middle holes 52 and the large holes 53 corresponding to the outer cylinder 33, and the marking needle 425 is aligned with the small holes 51, the middle holes 52 and the large holes 53 corresponding to the core ring 24. By rotating the rotating block 422 of the valve stem assembly 42, the marking needle 425 on the surface of the rotating block 422 is aligned with the scale 423. Different ends of the marking needle 425 and different ends of the scale 423 correspond to the overlap of two small holes 51, the middle holes 52 and the large holes 53 matched with the outer cylinder 33 and the core ring 24, respectively. When two small holes 51 of a certain number overlap, the flow rate is at the lowest, and when two large holes 53 of a certain number overlap, the flow rate is the largest. The number of small holes 51, the number of middle holes 52 and the number of large holes 53 are each a certain number, so that the flow rate switching control can be quickly carried out when the rotating block 422 rotates, and the scale 423 and the marking needle 425 cooperate to realize accurate matching and communication of two small holes 51, the middle holes 52 and the large holes 53.

[0072] Furthermore, in different flow modes of the small hole 51, the middle hole 52 and the large hole 53, the threaded sleeve 41 is rotated. When the threaded sleeve 41 rotates, the height of the adjusting rod 421 can be changed by cooperating with the thread of the adjusting rod 421. When the height of the adjusting rod 421 changes, the throttling hole groups 50 on the surface of the core ring 24 and the outer cylinder 33 are staggered, such as Fig.10 As shown, the small hole 51, the middle hole 52 and the large hole 53 included in the two throttle hole groups 50 are all in strip shape, and the difference in the aperture is the size of the gap in the hole, so that the outer cylinder 33 moves up and down under the action of air pressure or the core ring 24 moves up and down under active regulation, and the core ring 24 and the outer cylinder 33 slide alternately, so that the opening of the two throttle hole groups 50 is changed, and the control is realized, so that the passability between the throttle hole groups 50 with different aperture widths can be adjusted;

[0073] At the same time, when the present solution is connected to the gas source, the gas source is under full load, so that the high-pressure gas passes through the first one-way valve 123 in the air inlet pipe 121 into the valve body 10, and forms a high pressure in the upper shell 11 of the valve body 10. The pressure part is output through the valve core assembly 20 and the valve seat assembly 30 to control the flow rate, and at the same time, the piston ring 31 is pressed to cause the tension spring 35 to stretch, so that the inner cylinder 32 is kept closed to the compensation perforation 452, and the outer cylinder 33 moves downward to the surface of the supporting rib 143 and is maintained at the lowest position. At the same time, the high pressure enters the auxiliary gas cylinder 60 through the second one-way valve 134 inside the three-way pipe 131 of the compensation end 13. Based on the action of the second one-way valve 134, the auxiliary gas The auxiliary gas cylinder 60 always maintains the maximum pressure state with the gas source, and the reduction of the gas source pressure will not affect the auxiliary gas cylinder 60. Therefore, each time the gas source is connected to the auxiliary gas cylinder 60, it can automatically load oxygen and maintain the storage state. As the pressure in the gas source slowly decreases, the pressure on the piston ring 31 decreases, and the tension spring 35 gradually moves the piston ring 31 very slowly. When the piston ring 31 moves, it moves the outer cylinder 33 synchronously upward. At this time, the throttle hole group 50 on the surface of the outer cylinder 33 and the throttle hole group 50 on the surface of the core ring 24 are staggered to gradually increase their openings, thereby achieving pressure reduction and increased opening to achieve constant flow rate.

[0074] At the same time, if the gas source pressure drops to a certain threshold and the flow rate cannot be guaranteed to be stable through the opening compensation, the piston ring 31 moves upward with the outer cylinder 33 to a certain position, and the inner cylinder 32 also moves synchronously to expose the compensation perforation 452, and communicates with the three-way pipe 131 through the flow hole 34 of the outer cylinder 33. At this time, the high-pressure oxygen in the compensation gas cylinder enters the valve body 10 and will not leak under the action of the first one-way valve 123. When the high-pressure gas in the auxiliary gas cylinder 60 enters the valve body 10, if the pressure is too large, the piston ring 31 pulls the tension spring 35 downward, and the inner cylinder 32 closes the compensation perforation 452. 52 is closed, but there is not enough pressure to close it. At this time, the state presented is that the compensating perforation 452 always maintains a constant opening under the height control of the inner cylinder 32, so that the valve body 10 presents a constant pressure, the piston ring 31 will not move up and down and remain positioned, the staggered outer cylinder 33 and the core ring 24 are in a stable state, and in this state, a constant flow output is maintained with a constant staggered degree. As the pressure of the auxiliary gas cylinder 60 gradually decreases, the inner cylinder 32 will slowly move up under the action of the piston ring 31 and the tension spring 35, so that the opening of the compensating perforation 452 increases, and a constant gas flow is maintained.

[0075] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An oxygen supply flow regulating valve, characterized in that: Also includes: A valve body (10) is connected to a gas source at one end and is connected to an auxiliary gas cylinder (60) at the other end, wherein the valve body (10) transmits part of the high-pressure oxygen from the gas source in a unidirectional manner and stores it in the auxiliary gas cylinder (60); The valve seat assembly (30) is seal-slidably disposed in the valve body (10), moves under the action of the gas source pressure, and resets when the pressure is lower than a predetermined value; A valve core assembly (20) is slidably disposed in the valve seat assembly (30), wherein the valve core assembly (20) rotates horizontally or slides vertically in the valve seat assembly (30), and the amount of gas passing therethrough is controlled by horizontal staggering and vertical staggering respectively; An adjusting assembly (40) is rotatably arranged on the top of the valve body (10), fixedly connected to the inner wall of the valve core assembly (20) and controls the use state of the valve core assembly (20); The side walls of the valve seat assembly (30) and the valve core assembly (20) are both provided with a throttle hole group (50) that cooperates with each other; The valve seat assembly (30) slides to the lowest position under high pressure, and the valve seat assembly (30) resets when the gas source pressure decreases to a level that makes it impossible to continuously and stably supply oxygen. When resetting, the valve body (10) automatically connects to the auxiliary gas cylinder (60) to continuously supply oxygen when the gas source is replaced.

2. The oxygen supply flow regulating valve according to claim 1, characterized in that: The valve body (10) comprises an upper shell (11) and a lower shell (14) threadedly engaged with the inner wall of the upper shell (11); an air inlet end (12) and a compensation end (13) are integrally formed on the arc-shaped side wall of the upper shell (11); and the compensation end (13) is connected to the auxiliary gas cylinder (60).

3. The oxygen supply flow regulating valve according to claim 2, characterized in that: The upper shell (11) comprises a first base (111), an annular sealing chamber (112) is provided in the first base (111), a sealing plug (113) is provided on one side of the annular sealing chamber (112), and a pickup (114) is sealed and penetrated through the sealing plug (113), and one end of the pickup (114) is located in the annular sealing chamber (112); The lower shell (14) comprises a second base (141) threadedly engaged with the inner wall of the first base (111); an air outlet (142) is installed through the bottom of the second base (141); and a plurality of supporting ribs (143) for supporting the valve seat assembly (30) are integrally formed on the inner wall of the second base (141).

4. The oxygen supply flow regulating valve according to claim 3, characterized in that: The air intake end (12) comprises an air intake pipe (121) integrally formed with the first base body (111); a first joint (122) is rotatably provided on one side of the air intake pipe (121); and a first one-way valve (123) is provided on the inner wall of the air intake pipe (121); The compensation end (13) comprises a three-way pipe (131) integrally formed with the first base (111); both ends of the three-way pipe (131) are connected to the inner wall of the first base (111); the other end of the three-way pipe (131) is rotatably provided with a second joint (132); and the inner wall of one end of the three-way pipe (131) connected to the first base (111) is provided with a second one-way valve (134); the inner wall of the second joint (132) is threadedly matched with an adapter (133) for connecting to an auxiliary gas cylinder (60).

5. The oxygen supply flow regulating valve according to claim 4, characterized in that: The valve seat assembly (30) comprises a piston ring (31) sealingly sliding on the inner wall of a first base body (111); the lower surface of the piston ring (31) is fixedly connected to an inner cylinder (32); the surface of the inner cylinder (32) is fixedly connected to an outer cylinder (33) fittingly sliding on the inner wall of the first base body (111); the arc-shaped side wall of the outer cylinder (33) is provided with a plurality of flow holes (34) connected to one end of the three-way pipe (131); the upper surface of the piston ring (31) and the inner wall of the first base body (111) are fixedly connected to a tension spring (35); and the outer cylinder (33) fits and slides on the surface of the valve core assembly (20) and the adjustment assembly (40).

6. The oxygen supply flow regulating valve according to claim 5, characterized in that: The regulating assembly (40) comprises a threaded sleeve (41) which is sealed and penetrates and rotates on the top of the first base (111); a valve stem assembly (42) is threadedly penetrated through the inner wall of the threaded sleeve (41); the bottom end of the valve stem assembly (42) is fixedly connected to the inner wall of the valve core assembly (20); a guide tube (43) is penetrated through the surface of the valve stem assembly (42); the top end of the guide tube (43) is fixedly connected to the inner wall of the first base (111); a plurality of oxygen through holes (45) for gas circulation are opened on the arc-shaped side wall of the guide tube (43); and a spring (44) is arranged on the inner wall of the guide tube (43).

7. The oxygen supply flow regulating valve according to claim 6, characterized in that: The oxygen perforation (45) comprises a main perforation (451) and a compensation perforation (452); the compensation perforation (452) is closed by the inner cylinder (32) and is used to communicate with the three-way pipe (131) through the flow hole (34).

8. The oxygen supply flow regulating valve according to claim 6, characterized in that: The valve stem assembly (42) includes an adjusting rod (421) threadedly engaged with the inner wall of the threaded sleeve (41), the bottom end of the adjusting rod (421) is fixedly connected to a rotating block (422), and the valve stem assembly (42) also includes a guard frame (424) fixedly connected to the surface of the upper shell (11), one side of the guard frame (424) is fixedly connected to a scale (423), and the top end of the rotating block (422) is fixedly connected to a marking pin (425) that cooperates with the scale (423).

9. The oxygen supply flow regulating valve according to claim 8, characterized in that: The valve core assembly (20) comprises a valve core body (22) fixedly connected to the bottom end of the regulating rod (421); a core seat (21) is fixedly connected to the surface of the valve core body (22); a closed ring (23) is fixedly connected to the lower surface of the core seat (21) and is slidably fitted on the inner wall of the outer tube (33); and a core ring (24) is fixedly connected to the upper surface of the core seat (21) and is fitted on the inner wall of the outer tube (33).

10. The oxygen supply flow regulating valve according to claim 9, characterized in that: The throttling hole groups (50) are respectively arranged on the side walls of the core ring (24) and the outer cylinder (33), and the throttling hole groups (50) include small holes (51), middle holes (52) and large holes (53), and when one group of the small holes (51), middle holes (52) and large holes (53) corresponding to two throttling hole groups (50) is connected, the other two groups are in a staggered state; The scale (423) is aligned with the small hole (51), the middle hole (52) and the large hole (53) corresponding to the outer cylinder (33), and the marking needle (425) is aligned with the small hole (51), the middle hole (52) and the large hole (53) corresponding to the core ring (24).

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