Gas control regulating valve

Abstract

The utility model provides a gas control regulating valve, which belongs to the technical field of breathing machine gas regulating valves and comprises a valve seat, a gas outlet is arranged on the left side of the valve seat, a first cavity is arranged on the right side of the valve seat, a valve rod is movably mounted in the first cavity, a first gas inlet is arranged on one side of the upper end of the valve seat, and a second gas inlet is arranged on the other side of the upper end of the valve seat. The lower end of the first air inlet communicates with the air outlet and the first cavity through the second cavity, a second air inlet is formed in the other side of the upper end of the valve seat, and the lower end of the second air inlet communicates with the first cavity. The gas control regulating valve solves the problems that an existing gas control regulating valve is single in use scene, two regulating valves need to be used for controlling different gas input, meanwhile, the number of assembly components is large, assembly is complex, cost is high, operability is poor, and the input amount of mixed gas is not easy to adjust.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas regulating valves for breathing machines, and in particular relates to a gas control regulating valve. Background Art

[0002] In modern clinical medicine, as an effective means of artificially replacing the spontaneous ventilation function, ventilators have been widely used in respiratory failure caused by various reasons, anesthesia respiratory management during major surgery, respiratory support therapy and emergency resuscitation, and they occupy a very important position in the field of modern medicine. Ventilators are a vital medical device that can prevent and treat respiratory failure, reduce complications, and save and prolong patients' lives.

[0003] Currently, medical equipment such as ventilators or anesthesia machines on the market often need to use scenarios that mix two gases. For example, if a patient needs oxygen, they need to adjust the oxygen concentration by inputting air at the same time. When one of the gases needs to be used alone, two valve bodies are needed to isolate the gas, and even electronic control equipment is needed to assist. Therefore, the existing gas control regulating valve has a relatively simple usage scenario, and two regulating valves are needed to control different gas inputs. At the same time, it has many assembly sub-parts, complex assembly, high cost, poor operability, and is not easy to adjust the mixed gas input amount. Summary of the invention

[0004] The utility model provides a gas control regulating valve, which aims to solve the problem that the existing gas control regulating valve has a relatively single usage scenario and needs to use two regulating valves to control different gas inputs. At the same time, it has many assembly sub-parts, complex assembly, high cost, poor operability, and difficulty in adjusting the mixed gas input amount.

[0005] An embodiment of the utility model provides a gas control regulating valve, including a valve seat, a gas outlet is opened on the left side of the valve seat, a first cavity is opened on the right side of the valve seat, a valve stem is movably installed in the first cavity, an air inlet 1 is opened on one side of the upper end of the valve seat, a lower end of the air inlet is connected to the first cavity through the second cavity and the gas outlet respectively, an air inlet 2 is opened on the other side of the upper end of the valve seat, and the lower end of the air inlet 2 is connected to the first cavity.

[0006] By adopting the above technical solution, the two gas input channels are concentrated on a single valve seat through the gas inlet 1 and the gas inlet 2, and a gas outlet is opened, thereby optimizing the design of the gas control regulating valve, reducing the difficulty of assembly, reducing redundant components, and greatly reducing the overall cost. At the same time, the operability is excellent, the mixed gas input amount and the mixing ratio are easy to adjust, and the valve is compact and easy to install, making it suitable for various medical equipment products.

[0007] Furthermore, the valve stem comprises a connecting end, and an outer surface of the connecting end is threadedly connected to an end of the first cavity away from the air inlet.

[0008] By adopting the above technical solution, threaded rotation adjustment is adopted, and the opening size and on-off of the second air inlet and the second cavity are controlled by the valve stem, thereby controlling the gas input amount.

[0009] Furthermore, a sealing ring is provided on the outer surface of the connection end inside the first cavity, and the surface of the sealing ring is in close contact with the inner wall of the first cavity.

[0010] By adopting the above technical solution, the sealing between the valve stem and the first cavity is ensured, and gas leakage during use is prevented.

[0011] Furthermore, the valve stem also includes a connecting rod fixedly connected to one end of the connecting end, and the end of the connecting rod away from the connecting end is fixedly connected to a valve core, the diameter of the valve core is smaller than the inner diameter of the first cavity, and the diameter of the valve core is larger than the diameter of the connecting rod.

[0012] By adopting the above technical solution, it is ensured that when the rotary valve stem moves in the first cavity, the gas entering from the second air inlet can flow to the second cavity through the first cavity, and mix with the gas flowing from the first air inlet into the second cavity, and then be discharged from the air outlet, thereby ensuring the normal circulation of the gas.

[0013] Furthermore, the valve core has a tapered structure that tapers from the proximal end to the distal end, the connection between the first cavity and the second cavity is the air inlet three, the air inlet three has an outwardly expanding tapered structure, the diameter of the valve core at the distal end is smaller than the diameter of the air inlet three, the diameter of the valve core at the proximal end is larger than the diameter of the air inlet three, and the valve core and the air inlet three are adapted to each other.

[0014] By adopting the above technical solution, the fit between the valve core and the air inlet three is ensured, thereby ensuring the sealing of the valve core in the air inlet three, preventing the gas entering from the air inlet two from flowing into the second cavity through the first cavity and mixing with the gas flowing into the air inlet one and flowing out, and ensuring that the gas input amount is controlled by controlling the opening size.

[0015] Furthermore, a knob is installed at one end of the connecting end away from the connecting rod.

[0016] By adopting the above technical solution, the rotation of the valve stem is controlled by the knob, and the gas input amount is then controlled by rotation adjustment.

[0017] The beneficial effects of the utility model are:

[0018] The utility model concentrates two gas input channels on a single valve seat through the first gas inlet and the second gas inlet, and opens a gas outlet, optimizes the design of the gas control regulating valve, reduces the difficulty of assembly, reduces redundant components, and greatly reduces the overall cost. At the same time, it has excellent operability, is easy to adjust the mixed gas input amount and the mixing ratio, and has a small size and is easy to install, and is suitable for various medical equipment products.

[0019] Other features and advantages of the utility model will be described in the following description, and partly become apparent from the description, or understood by implementing the utility model. The purpose and other advantages of the utility model can be realized and obtained through the structures particularly pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0021] Figure 1 This is a schematic diagram of the closed front cross-sectional structure of the regulating valve of an embodiment of the utility model;

[0022] Figure 2 This is a schematic diagram of the main cross-sectional structure of the regulating valve in the embodiment of the utility model when it is opened;

[0023] Figure 3 It is a rear view structural schematic diagram of an embodiment of the utility model;

[0024] Figure 4 It is a left-side structural schematic diagram of an embodiment of the utility model;

[0025] Figure 5 It is a schematic diagram of the top view of the structure of an embodiment of the utility model;

[0026] Figure numerals: 1. valve seat; 2. air outlet; 3. first cavity; 4. valve stem; 5. air inlet one; 6. air inlet two; 7. sealing ring; 8. knob; 41. connecting end; 42. connecting rod; 43. valve core; 9. second cavity; 91. air inlet three. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the technical solution of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described in conjunction with the drawings of the specific embodiments of the utility model. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Reference Figure 1-5 The utility model embodiment proposes a gas control regulating valve, including a valve seat, a gas outlet 2 is opened on the left side of the valve seat 1, a first cavity 3 is opened on the right side of the valve seat 1, a valve stem 4 is movably installed in the first cavity 3, an air inlet 1 5 is opened on one side of the upper end of the valve seat 1, and the lower end of the air inlet 1 5 is connected to the first cavity 3 through the second cavity 9 and the gas outlet 2 respectively, and an air inlet 2 6 is opened on the other side of the upper end of the valve seat 1, and the lower end of the air inlet 2 6 is connected to the first cavity 3, and the two gas input channels are concentrated on the single valve seat 1 through the air inlet 1 5 and the air inlet 2 6, and a gas outlet 2 is opened, so as to optimize the design of the gas control regulating valve, reduce the difficulty of assembly, reduce redundant components, and greatly reduce the overall cost. At the same time, the operability is excellent, the mixed gas input amount and the mixing ratio are easy to adjust, and the volume is small and the installation is convenient, which is suitable for various medical equipment products.

[0029] Reference Figure 1 and Figure 2 The valve stem 4 includes a connecting end 41, the outer surface of the connecting end 41 is threadedly connected to the end of the first cavity 3 away from the air inlet 1 5, and is adjusted by threaded rotation. The valve stem 4 controls the opening size and connection and disconnection of the air inlet 2 6 and the second cavity 9, thereby controlling the gas input amount.

[0030] Reference Figure 1 and Figure 2 A sealing ring 7 is provided on the outer surface of the connection end 41 inside the first cavity 3, and the surface of the sealing ring 7 is in close contact with the inner wall of the first cavity 3 to ensure the sealing between the valve stem 4 and the first cavity 3 and prevent gas leakage during use.

[0031] Reference Figure 1 and Figure 2The valve stem 4 also includes a connecting rod 42 fixedly connected to one end of the connecting end 41, and a valve core 43 is fixedly connected to the end of the connecting rod 42 away from the connecting end 41. The diameter of the valve core 43 is smaller than the inner diameter of the first cavity 3, and the diameter of the valve core 43 is larger than the diameter of the connecting rod 42, ensuring that when the valve stem 4 is rotated to move in the first cavity 3, the gas entering from the air inlet 6 can flow to the second cavity 9 through the first cavity 3, and mix with the gas flowing from the air inlet 5 to the second cavity 9, and then be discharged from the air outlet 2, thereby ensuring the normal circulation of the gas.

[0032] Reference Figure 1 and Figure 2 The valve core 43 is a tapered structure that gradually contracts from the proximal end to the distal end. The connection point between the first cavity 3 and the second cavity 9 is the air inlet 3 91. The air inlet 3 91 is an outward-expanding tapered structure. The diameter of the distal end of the valve core 43 is smaller than the diameter of the air inlet 3 91, and the diameter of the proximal end of the valve core 43 is larger than the diameter of the air inlet 3 91. The valve core 43 and the air inlet 3 91 are adapted to each other to ensure the fit between the valve core 43 and the air inlet 3 91, thereby ensuring the sealing of the valve core 43 in the air inlet 3 91, preventing the gas entering the air inlet 2 6 from flowing into the second cavity 9 through the first cavity 3 and mixing with the gas flowing into the air inlet 1 5, and ensuring that the gas input amount is controlled by controlling the opening size. It should be noted that the proximal end and the distal end of the valve core 43 mentioned here are relative to the valve stem 4.

[0033] Reference Figure 1 and Figure 2 A knob 8 is installed at one end of the connecting end 41 away from the connecting rod 42, and the rotation of the valve stem 4 is controlled by the knob 8, thereby controlling the gas input amount by rotation adjustment.

[0034] The specific implementation method is as follows: during assembly, first install the sealing ring 7 of the valve stem 4 into the annular groove on the valve stem 4, then screw the connecting end 41 on the valve stem 4 into the first cavity 3 on the valve seat 1 through a thread, and finally assemble the knob 8 onto the valve stem 4, thereby completing the assembly of the entire one-way valve;

[0035] The gas introduction pipelines are connected to the air inlet 1 5 and the air inlet 2 6 respectively, and the gas output pipeline is connected to the air outlet 2. When only one gas needs to be introduced (such as air), the air inlet 1 5 is connected, and the knob 8 is rotated to tighten the valve core 43 on the valve stem 4 into the air inlet 3 91, so that the first cavity 3 can be closed and the connection between the air inlet 2 6 and the second cavity 9 can be disconnected; when a mixed gas needs to be introduced (such as air and oxygen mixed gas), the air inlet 1 5 and the air inlet 2 6 are connected, and the knob 8 is rotated in the opposite direction to allow the valve core 43 on the valve stem 4 to slowly move away from the air inlet 3 91, so that the air inlet 6 is connected to the second cavity 9. By controlling the opening size of the air inlet 3 91 through different rotation angles, that is, controlling the size of the gap between the valve core 43 and the air inlet 3 91, different mixing ratios can be controlled.

[0036] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A gas control regulating valve, comprising a valve seat (1), characterized in that: An air outlet (2) is provided on the left side of the valve seat (1), a first cavity (3) is provided on the right side of the valve seat (1), a valve stem (4) is movably installed in the first cavity (3), an air inlet (5) is provided on one side of the upper end of the valve seat (1), the lower end of the air inlet (5) is connected to the air outlet (2) and the first cavity (3) through the second cavity (9), and an air inlet (6) is provided on the other side of the upper end of the valve seat (1), the lower end of the air inlet (6) is connected to the first cavity (3).

2. A gas control regulating valve according to claim 1, characterized in that: The valve stem (4) comprises a connecting end (41), and the outer surface of the connecting end (41) is threadedly connected to an end of the first cavity (3) away from the air inlet (5).

3. A gas control regulating valve according to claim 2, characterized in that: A sealing ring (7) is provided on the outer surface of the connection end (41) inside the first cavity (3), and the surface of the sealing ring (7) is in close contact with the inner wall of the first cavity (3).

4. A gas control regulating valve according to claim 3, characterized in that: The valve stem (4) further comprises a connecting rod (42) fixedly connected to one end of the connecting end (41); an end of the connecting rod (42) away from the connecting end (41) is fixedly connected to a valve core (43); a diameter of the valve core (43) is smaller than an inner diameter of the first cavity (3); and a diameter of the valve core (43) is larger than a diameter of the connecting rod (42).

5. A gas control regulating valve according to claim 4, characterized in that: The valve core (43) is in a tapered structure that tapers from the proximal end to the distal end. The connection point between the first cavity (3) and the second cavity (9) is the air inlet three (91). The air inlet three (91) is in an outwardly expanding tapered structure. The diameter of the distal end of the valve core (43) is smaller than the diameter of the air inlet three (91). The diameter of the proximal end of the valve core (43) is larger than the diameter of the air inlet three (91). The valve core (43) and the air inlet three (91) are adapted to each other.

6. A gas control regulating valve according to claim 3, characterized in that: A knob (8) is installed at one end of the connection end (41) away from the connection rod (42).

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