A gas flow rate adjustment device for a non-invasive ventilator

Abstract

The application relates to a gas flow speed adjusting device for a noninvasive respirator, which comprises an oxygen storage pipe, a fixing mechanism is arranged above the oxygen storage pipe, an adjusting mechanism is arranged in the oxygen storage pipe, a plugging mechanism is arranged in the oxygen storage pipe, a partition plate is fixed to the lower surface of the oxygen storage pipe through bolts, a gas filtering device body is fixed to the upper surface of the partition plate, a noninvasive respirator body is arranged on the left side of the oxygen storage pipe, an oxygen supply pipe is in communication with the front face of the noninvasive respirator body, and a transmission pipe is arranged above the oxygen storage pipe. The gas flow speed adjusting device for the noninvasive respirator is characterized in that the fixing pipe is attached to the bottom wall of the inner cavity of the mounting seat, the left and right knobs are rotated to drive the left and right first screw rods to rotate, the arc-shaped rubber pads fixed to the lower surfaces of the two movable plates push the two abutting plates downward, the fixing pipe and the mounting seat are attached more closely, and the sealing effect is better.

Description

Technical Field

[0001] This invention relates to the field of non-invasive ventilator technology, specifically to a gas flow rate regulating device for a non-invasive ventilator. Background Technology

[0002] Non-invasive ventilators, also known as non-invasive positive pressure ventilation, are used clinically to treat sleep apnea syndrome and related diseases. In modern clinical medicine, non-invasive ventilators are widely used as an effective means of artificially replacing spontaneous ventilation in respiratory failure caused by various reasons, respiratory management during major surgery, respiratory support therapy, and emergency resuscitation. They occupy a very important position in the field of modern medicine. Non-invasive ventilators are a crucial medical device that can prevent and treat respiratory failure, reduce complications, and save and prolong patients' lives.

[0003] For example, Chinese patent CN 109157723 B discloses a connection device between a ventilator and an oxygen connection tube in a non-invasive ventilator. The device includes a ventilator, with support legs and an oxygen storage box fixedly connected to its upper surface. The oxygen storage box contains an oxygen inlet device and an oxygen outlet device, with the inlet device including an oxygen inlet tube and the outlet device including an oxygen outlet tube. In use, medical personnel rotate a pull buckle to move an adjusting rod outward, causing a clamping block to move outward under the pressure of a compression spring. The oxygen connection tube can then be fitted onto the fixing block. Rotating the pull buckle causes the adjusting rod to press the clamping block inward, causing the surface of the clamping block to press against the oxygen connection tube, thus fixing it in place. The inner wall of the oxygen connection tube also presses against a second sealing ring, achieving a sealing effect. This provides convenient installation, strong sealing performance, and prevents oxygen leakage.

[0004] The aforementioned connection device between the ventilator and the oxygen tubing in a non-invasive ventilator still has certain shortcomings. For example, although it achieves convenient installation, strong sealing performance, and prevention of oxygen leakage by setting a clamping device on the upper surface of the base plate, and the clamping device includes a fixing block whose bottom is fixedly connected to the upper surface of the base plate, it is necessary to rotate the pull buckles on both sides when clamping. Manual operation may cause the clamped oxygen tubing to shift, which may result in poor sealing performance of the oxygen tubing. Therefore, a connection device between the ventilator and the oxygen tubing in a non-invasive ventilator is proposed to solve the above problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a gas flow rate regulating device for non-invasive ventilators, which has the advantage of good sealing performance and solves the problem that may lead to poor sealing of oxygen connection tubes.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a gas flow rate regulating device for a non-invasive ventilator, comprising an oxygen storage tube, a fixing mechanism above the oxygen storage tube, an adjusting mechanism inside the oxygen storage tube, a sealing mechanism inside the oxygen storage tube, a partition fixed to the lower surface of the oxygen storage tube by bolts, a gas filter device body fixed to the upper surface of the partition, a non-invasive ventilator body on the left side of the oxygen storage tube, an oxygen delivery tube connected to the front of the non-invasive ventilator body, and a transmission tube above the oxygen storage tube;

[0007] The fixing mechanism includes a mounting base fixed to the upper surface of the oxygen storage tube. A fixing tube is movably fitted to the bottom wall of the inner cavity of the mounting base. Positioning blocks are fixed on both the left and right sides of the fixing tube. Two positioning rods are vertically fixed to the bottom wall of the inner cavity of the mounting base. Abutment plates are fixed on both the left and right sides of the fixing tube, respectively above the two positioning blocks. Fixing blocks are fixed on both the left and right sides of the mounting base. The lower surfaces of the two fixing blocks are rotatably connected to a first screw through a bearing. A first movable sleeve is screwed to the outer side of each of the two first screws. A connecting block is fixed to the bottom end of each of the two first movable sleeves. A slider is fixed to the opposite side of each of the two connecting blocks. A hinge rod is hinged to the opposite side of each of the two sliders through a hinge shaft. Fixing plates are fixed to both the left and right side walls of the inner cavity of the mounting base. Movable plates are slidably connected to the outer side of each of the two fixing plates.

[0008] The adjustment mechanism includes a worm gear rotatably connected to the upper surface of the oxygen storage tube near its left side via a bearing. A turbine is engaged on the back side of the worm gear. A connecting rod is fixed inside the turbine. The right end of the connecting rod passes through the left side of the oxygen storage tube and extends into the interior of the oxygen storage tube, where a second screw is fixed. A second movable sleeve is threadedly connected to the outer side of the second screw.

[0009] The sealing mechanism includes two fixing sleeves fixed to the left side wall of the inner cavity of the oxygen storage tube. The two fixing sleeves are slidably connected to the inside of each other. The left side wall of the inner cavity of each of the two mounting sleeves is fixed with a spring. The right side of each of the two mounting sleeves is fixed with a mounting plate. A baffle is fixed between the opposite sides of the two mounting plates.

[0010] Furthermore, the two hinge rods are respectively hinged to the upper surfaces of the two movable plates via hinge shafts, and arc-shaped rubber blocks are fixed to the lower surfaces of the two movable plates.

[0011] Furthermore, the lower surfaces of both positioning blocks are provided with positioning grooves that are slidably connected to the positioning rods, and the lower surface of the fixing tube is fixed with a sealing ring.

[0012] Furthermore, the tips of the two first screws penetrate the lower surface of the fixing block and extend to the top of the fixing block, where a knob is fixed.

[0013] Furthermore, the transmission tube is fixed to the top of the fixed tube, and the left and right side walls of the inner cavity of the mounting base are both fixed with slide rails that are slidably connected to the slider.

[0014] Furthermore, the upper surface of the oxygen storage tube is provided with a flow port, and both the left and right sides of the mounting base are provided with connecting grooves that are slidably connected to the connecting block.

[0015] Furthermore, the front and rear sides of the second movable sleeve are respectively sealed and fitted to the front and rear side walls of the oxygen storage tube inner cavity, and a handle is fixed to the top of the worm gear.

[0016] Furthermore, two sliding rods are fixed between the left and right side walls of the inner cavity of the oxygen storage tube, and movable blocks that are slidably connected to the outside of the sliding rods are fixed on both the upper and lower sides of the second movable sleeve.

[0017] Furthermore, the two springs are respectively fixed to the left side wall of the inner cavity of the two fixed sleeves, and the baffle is sealed and fitted to the right side of the oxygen delivery tube.

[0018] Furthermore, the top and bottom walls of the inner cavities of the two fixed sleeves are provided with mounting grooves, and mounting blocks that are slidably connected to the mounting grooves are fixed on the upper and lower sides of the two mounting sleeves.

[0019] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0020] 1. This gas flow rate regulating device for non-invasive ventilators works by fitting the fixed tube against the bottom wall of the mounting base cavity, rotating the knobs on both sides to drive the first screws on both sides to rotate, causing the arc-shaped rubber pads fixed on the lower surface of the two movable plates to push the two abutment plates downward, making the fixed tube and the mounting base fit more tightly, thus achieving a better sealing effect.

[0021] 2. The gas flow rate regulating device for non-invasive ventilators allows the second movable sleeve to move left and right by rotating the handle. By adjusting the distance between the second movable sleeve and the right side wall of the oxygen storage tube, the gas flow rate can be adjusted. The gas filter device body is used to filter the oxygen in the oxygen storage tube. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the fixing mechanism of the present invention;

[0024] Figure 3 This is a schematic diagram of the adjustment mechanism of the present invention;

[0025] Figure 4 This is a schematic diagram of the sealing mechanism of the present invention.

[0026] In the diagram: 1. Oxygen storage tube; 2. Fixing mechanism; 201. Mounting base; 202. Fixing tube; 203. Positioning block; 204. Positioning rod; 205. Abutment plate; 206. Fixing block; 207. First screw; 208. First movable sleeve; 209. Connecting block; 210. Slider; 211. Hinge rod; 212. Fixing plate; 213. Movable plate; 3. Fixing plate; 4. Adjusting mechanism; 401. Worm gear; 402. Turbine; 403. Connecting rod; 404. Second screw; 405. Second movable sleeve; 5. Gas filter device body; 6. Non-invasive ventilator body; 7. Sealing mechanism; 701. Fixing sleeve; 702. Mounting sleeve; 703. Spring; 704. Mounting plate; 705. Baffle; 8. Oxygen delivery tube; 9. Transmission tube. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] Please see Figure 1 This embodiment provides a gas flow rate regulating device for a non-invasive ventilator, comprising an oxygen storage tube 1, a fixing mechanism 2 above the oxygen storage tube 1, an adjusting mechanism 4 inside the oxygen storage tube 1, a sealing mechanism 7 inside the oxygen storage tube 1, a partition 3 fixed to the lower surface of the oxygen storage tube 1 by bolts, a gas filter device body 5 fixed to the upper surface of the partition 3, the gas filter device body 5 being used to filter the oxygen in the oxygen storage tube 1, a non-invasive ventilator body 6 on the left side of the oxygen storage tube 1, an oxygen delivery tube 8 connected to the front of the non-invasive ventilator body 6, oxygen being introduced into the oxygen delivery tube 8 through the non-invasive ventilator body 6, the right end of the oxygen delivery tube 8 penetrating the left side of the oxygen storage tube 1 and extending into the interior of the oxygen storage tube 1, and a transmission tube 9 above the oxygen storage tube 1.

[0029] Please see Figure 2To improve the sealing effect, the fixing mechanism 2 in this embodiment includes a mounting base 201 fixed to the upper surface of the oxygen storage tube 1. A fixing tube 202 is movably fitted to the bottom wall of the inner cavity of the mounting base 201. Positioning blocks 203 are fixed to both the left and right sides of the fixing tube 202. By passing the fixing tube 202 through the positioning blocks 203 on both sides to the outside of two positioning rods 204, the fixing tube 202 is fitted to the bottom wall of the inner cavity of the mounting base 201. Two positioning rods 204 are vertically fixed to the bottom wall of the inner cavity of the mounting base 201. Abutment plates 205 are fixed to the left and right sides of the fixing tube 202, respectively above the two positioning blocks 203. Fixing blocks 206 are fixed to both the left and right sides of the mounting base 201. The lower surface of 206 is rotatably connected to a first screw 207 via bearings. The outer sides of the two first screws 207 are screwed to a first movable sleeve 208. The bottom ends of the two first movable sleeves 208 are fixed with connecting blocks 209. By rotating the knobs on the left and right sides, the first screws 207 on the left and right sides are rotated, causing the first movable sleeves 208 on the left and right sides to drive the connecting blocks 209 on the left and right sides to move downwards respectively. The opposite side of the two connecting blocks 209 is fixed with a slider 210. The opposite side of the two sliders 210 is hinged with a hinge rod 211 via a hinge shaft. The left and right side walls of the inner cavity of the mounting base 201 are fixed with fixing plates 212. The outer sides of the two fixing plates 212 are slidably connected with movable plates 213.

[0030] In this embodiment, two hinge rods 211 are respectively hinged to the upper surfaces of two movable plates 213 via hinge shafts. Arc-shaped rubber blocks are fixed to the lower surfaces of both movable plates 213. Positioning grooves that slide with positioning rods 204 are provided on the lower surfaces of both positioning blocks 203. Sealing rings are fixed to the lower surface of the fixing tube 202. The top ends of two first screws 207 penetrate the lower surface of the fixing block 206 and extend above it, with knobs fixed thereon. The transmission tube 9 is fixed to the top end of the fixing tube 202. Both the left and right side walls of the inner cavity of the mounting base 201 are fixed with... The slider 210 is slidably connected to the slide rail. The upper surface of the oxygen storage tube 1 has a flow port. When the connecting blocks 209 on the left and right sides move downward, the sliders 210 on the left and right sides drive the hinge rods 211 on the left and right sides to push the fixed plates 212 on the left and right sides to move to the opposite side. The arc-shaped rubber pads fixed on the lower surface of the two movable plates 213 push the two abutment plates 205 downward, so that the fixed tube 202 and the mounting base 201 fit more tightly and the sealing effect is better. The mounting base 201 has connecting grooves on both the left and right sides that are slidably connected to the connecting blocks 209.

[0031] It should be noted that by fitting the fixing tube 202 against the bottom wall of the inner cavity of the mounting base 201, rotating the knobs on the left and right sides drives the first screws 207 on the left and right sides to rotate, causing the arc-shaped rubber pads fixed on the lower surface of the two movable plates 213 to push the two abutment plates 205 downward, making the fixing tube 202 and the mounting base 201 fit more tightly, thus achieving a better sealing effect.

[0032] Please see Figure 3 In order to adjust the gas flow rate, the adjustment mechanism 4 in this embodiment includes a worm gear 401 rotatably connected to the upper surface of the oxygen storage pipe 1 near its left side via a bearing. A turbine 402 is engaged on the back side of the worm gear 401. A connecting rod 403 is fixed inside the turbine 402. The right end of the connecting rod 403 passes through the left side of the oxygen storage pipe 1 and extends into the interior of the oxygen storage pipe 1 and is fixed with a second screw 404. By rotating the handle, the worm gear 401 drives the turbine 402 to rotate, and the turbine 402 drives the connecting rod 403 to rotate, so that the connecting rod 403 drives the second screw 404 to rotate. A second movable sleeve 405 is threadedly connected to the outer side of the second screw 404.

[0033] In this embodiment, the front and rear sides of the second movable sleeve 405 are respectively sealed and fitted to the front and rear side walls of the inner cavity of the oxygen storage tube 1. A handle is fixed to the top of the worm gear 401. Two sliding rods are fixed between the left and right side walls of the inner cavity of the oxygen storage tube 1. Movable blocks that are slidably connected to the outside of the sliding rods are fixed to the upper and lower sides of the second movable sleeve 405. Since the movable blocks that are slidably connected to the outside of the sliding rods are fixed to the upper and lower sides of the second movable sleeve 405, the second movable sleeve 405 will move left and right. By adjusting the distance between the second movable sleeve 405 and the right side wall of the inner cavity of the oxygen storage tube 1, the purpose of adjusting the gas flow rate can be achieved.

[0034] It should be noted that by rotating the handle, the second movable sleeve 405 can be moved left and right. By adjusting the distance between the second movable sleeve 405 and the right side wall of the inner cavity of the oxygen storage tube 1, the gas flow rate can be adjusted, and the oxygen in the oxygen storage tube 1 can be filtered by the gas filter device body 5.

[0035] Please see Figure 4 In this embodiment, the sealing mechanism 7 includes two fixing sleeves 701 fixed to the left side wall of the inner cavity of the oxygen storage tube 1. The two fixing sleeves 701 are slidably connected to the interior of each fixing sleeve 702. The left side wall of the inner cavity of each of the two mounting sleeves 702 is fixed with a spring 703. The right side of each of the two mounting sleeves 702 is fixed with a mounting plate 704. A baffle 705 is fixed between the opposite sides of the two mounting plates 704.

[0036] In this embodiment, two springs 703 are respectively fixed to the left side wall of the inner cavity of the two fixed sleeves 701, and the baffle 705 is sealed and fitted to the right side of the oxygen delivery pipe 8. The top and bottom walls of the inner cavities of the two fixed sleeves 701 are provided with mounting grooves. The upper and lower sides of the two mounting sleeves 702 are fixed with mounting blocks that are slidably connected to the mounting grooves. When oxygen is introduced into the oxygen delivery pipe 8 and pushes the baffle 705 to move to the right, the two springs 703 begin to stretch. The oxygen moves to the right through the gas filter device body 5. When the oxygen contacts the right side wall of the inner cavity of the oxygen storage pipe 1, it moves upward through the second movable sleeve 405 and enters the interior of the transmission pipe 9. At this time, the oxygen delivery work can be carried out stably.

[0037] It is understood that all electrical components mentioned in this article are electrically connected to the main controller and power supply, and all electrical components mentioned in this article are conventional and known devices. This application will not elaborate further. The main controller can be a conventional and known device such as a computer that performs control. The control circuit of the main controller can be implemented by those skilled in the art through simple programming. The power supply is also common knowledge in the art. Furthermore, this invention is mainly used to protect mechanical devices, so this invention will not explain the control method and circuit connection in detail. At the same time, all parts not described in detail in this invention are common technologies known to those skilled in the art.

[0038] The working principle of the above embodiments is as follows:

[0039] (1) When the gas flow rate regulating device for non-invasive ventilator is needed, the fixed tube 202 is made to fit against the bottom wall of the inner cavity of the mounting base 201 by passing the left and right side positioning blocks 203 through the outside of the two positioning rods 204. At this time, the left and right side knobs are rotated to drive the left and right side first screws 207 to rotate, so that the left and right side first movable sleeves 208 respectively drive the left and right side connecting blocks 209 to move downward, so that the left and right side sliders 210 respectively drive the left and right side hinge rods 211 to push the left and right side fixed plates 212 to move to the opposite side, so that the arc-shaped rubber pads fixed on the lower surface of the two movable plates 213 push the two abutment plates 205 downward, so that the fixed tube 202 and the mounting base 201 fit more tightly and the sealing effect is better.

[0040] (2) By rotating the handle, the worm gear 401 drives the turbine 402 to rotate, and the turbine 402 drives the connecting rod 403 to rotate, which in turn drives the second screw 404 to rotate. Since the upper and lower sides of the second movable sleeve 405 are fixed with movable blocks that are slidably connected to the outside of the slide rod, the second movable sleeve 405 will move left and right. By adjusting the distance between the second movable sleeve 405 and the right side wall of the inner cavity of the oxygen storage tube 1, the gas flow rate can be adjusted. At the same time, the gas filter device body 5 is used to filter the oxygen in the oxygen storage tube 1. The oxygen can be introduced into the oxygen delivery tube 8 through the non-invasive ventilator body 6, and the baffle 705 is pushed to the right, so that the two springs 703 begin to stretch. The oxygen moves to the right through the gas filter device body 5. When the oxygen comes into contact with the right side wall of the inner cavity of the oxygen storage tube 1, it moves upward through the second movable sleeve 405 and enters the interior of the transmission tube 9. At this time, the oxygen delivery work can be carried out stably.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A gas flow rate regulating device for a non-invasive ventilator, comprising an oxygen reservoir (1), characterized in that: A fixing mechanism (2) is provided above the oxygen storage tube (1), an adjustment mechanism (4) is provided inside the oxygen storage tube (1), a sealing mechanism (7) is provided inside the oxygen storage tube (1), a partition (3) is fixed to the lower surface of the oxygen storage tube (1) by bolts, a gas filter device body (5) is fixed to the upper surface of the partition (3), a non-invasive ventilator body (6) is provided on the left side of the oxygen storage tube (1), an oxygen delivery tube (8) is connected to the front of the non-invasive ventilator body (6), and a transmission tube (9) is provided above the oxygen storage tube (1). The fixing mechanism (2) includes a mounting base (201) fixed to the upper surface of the oxygen storage tube (1). A fixing tube (202) is movably fitted to the bottom wall of the inner cavity of the mounting base (201). Positioning blocks (203) are fixed on both the left and right sides of the fixing tube (202). Two positioning rods (204) are vertically fixed to the bottom wall of the inner cavity of the mounting base (201). Abutment plates (205) are fixed on the left and right sides of the fixing tube (202) and above the two positioning blocks (203). Fixing blocks (206) are fixed on both the left and right sides of the mounting base (201). The lower part of the two fixing blocks (206) is... The surface is rotatably connected to a first screw (207) via bearings. The outer sides of the two first screws (207) are screwed with first movable sleeves (208). The bottom ends of the two first movable sleeves (208) are fixed with connecting blocks (209). The opposite sides of the two connecting blocks (209) are fixed with sliders (210). The opposite sides of the two sliders (210) are hinged with hinge rods (211) via hinge shafts. The left and right side walls of the inner cavity of the mounting base (201) are fixed with fixing plates (212). The outer sides of the two fixing plates (212) are slidably connected with movable plates (213). The adjustment mechanism (4) includes a worm gear (401) rotatably connected to the upper surface of the oxygen storage tube (1) near its left side via a bearing. A turbine (402) is engaged on the back side of the worm gear (401). A connecting rod (403) is fixed inside the turbine (402). The right end of the connecting rod (403) passes through the left side of the oxygen storage tube (1) and extends into the interior of the oxygen storage tube (1) and is fixed with a second screw (404). A second movable sleeve (405) is threadedly connected to the outer side of the second screw (404). The sealing mechanism (7) includes two fixing sleeves (701) fixed to the left side wall of the inner cavity of the oxygen storage tube (1). The two fixing sleeves (701) are slidably connected to the interior of each of the two fixing sleeves (701). The left side wall of the inner cavity of each of the two mounting sleeves (702) is fixed with a spring (703). The right side of each of the two mounting sleeves (702) is fixed with a mounting plate (704). A baffle (705) is fixed between the opposite sides of the two mounting plates (704).

2. The gas flow rate regulating device for a non-invasive ventilator according to claim 1, characterized in that: The two hinge rods (211) are respectively hinged to the upper surfaces of the two movable plates (213) via hinge shafts, and the lower surfaces of the two movable plates (213) are fixed with arc-shaped rubber blocks.

3. A gas flow rate regulating device for a non-invasive ventilator according to claim 1, characterized in that: The lower surfaces of the two positioning blocks (203) are provided with positioning grooves that are slidably connected to the positioning rod (204), and the lower surface of the fixing tube (202) is fixed with a sealing ring.

4. A gas flow rate regulating device for a non-invasive ventilator according to claim 1, characterized in that: The top ends of the two first screws (207) penetrate the lower surface of the fixing block (206) and extend to the top of the fixing block (206) and are fixed with knobs.

5. A gas flow rate regulating device for a non-invasive ventilator according to claim 1, characterized in that: The transmission tube (9) is fixed at the top of the fixed tube (202), and the left and right side walls of the inner cavity of the mounting base (201) are fixed with slides that are slidably connected to the slider (210).

6. A gas flow rate regulating device for a non-invasive ventilator according to claim 1, characterized in that: The oxygen storage tube (1) has a flow port on its upper surface, and the mounting base (201) has connecting grooves on both the left and right sides that are slidably connected to the connecting block (209).

7. A gas flow rate regulating device for a non-invasive ventilator according to claim 1, characterized in that: The front and rear sides of the second movable sleeve (405) are respectively sealed and fitted to the front and rear side walls of the inner cavity of the oxygen storage tube (1), and a handle is fixed to the top of the worm (401).

8. A gas flow rate regulating device for a non-invasive ventilator according to claim 1, characterized in that: Two sliding rods are fixed between the left and right side walls of the inner cavity of the oxygen storage tube (1), and movable blocks that are slidably connected to the outside of the sliding rods are fixed on both the upper and lower sides of the second movable sleeve (405).

9. A gas flow rate regulating device for a non-invasive ventilator according to claim 1, characterized in that: The two springs (703) are respectively fixed to the left side wall of the inner cavity of the two fixed sleeves (701), and the baffle (705) is sealed and attached to the right side of the oxygen delivery tube (8).

10. A gas flow rate regulating device for a non-invasive ventilator according to claim 1, characterized in that: The top and bottom walls of the inner cavities of the two fixed sleeves (701) are provided with mounting grooves, and the upper and lower sides of the two mounting sleeves (702) are fixed with mounting blocks that are slidably connected to the mounting grooves.

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