Double-pipeline stop valve structure

Abstract

The utility model relates to the technical field of medical equipment, in particular to a double-pipeline stop valve structure. The double-pipeline stop valve structure comprises a first pipeline structure and a second pipeline structure. When the first gas conveying pipeline 3 and the second gas conveying pipeline convey gas at the same time, the gas in the second pipeline can enter the second gas inlet end of the first stop valve and the first gas cavity through the control pipeline to enter the piston cavity, and the first piston is opened by increasing the pressure, so that the first gas inlet end is communicated with the first gas outlet end; and meanwhile, when the gas in the second pipeline is exhausted, the air pressure in the first air cavity is reduced, and the first piston is closed, so that the gas conveying of the first gas conveying pipeline is cut off. Therefore, the problem that when the gas in the second gas conveying pipeline is used up, the gas in the first gas conveying pipeline still continues to be conveyed can be solved, and the purpose of improving the double-pipeline gas conveying safety is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, in particular to a double-pipeline stop valve structure. Background Art

[0002] With the continuous development of science and technology, various medical devices have begun to be widely used in the medical field, such as anesthesia machines.

[0003] The anesthesia machine mainly anesthetizes the patient by inputting anesthetic gas (such as laughing gas) into the patient. However, when the anesthetic gas is input into the patient through the anesthesia machine, a certain proportion of oxygen needs to be input simultaneously to ensure the safety of the patient during the anesthesia process.

[0004] At present, common anesthesia machines mainly control the input of anesthetic gas and oxygen manually, such as manually opening the stop valve of the anesthetic gas pipeline and the stop valve of the oxygen pipeline, and then manually closing the stop valve of the anesthetic gas pipeline and the stop valve of the oxygen pipeline after anesthesia is completed for the patient.

[0005] However, if the oxygen in the oxygen tank connected to the oxygen pipeline is exhausted or the oxygen concentration in the oxygen pipeline is seriously lower than the standard concentration during the anesthesia of the patient, the patient will inhale a high concentration of anesthetic gas, threatening the patient's life. Therefore, the existing anesthesia machine has the problem of low safety. Summary of the invention

[0006] The embodiment of the utility model provides a double-pipeline stop valve structure to solve the problem of low safety of anesthesia machines in the prior art.

[0007] A double-pipeline stop valve structure comprises: a first pipeline structure and a second pipeline structure; wherein:

[0008] The first pipeline structure includes a first stop valve and a first gas pipeline; the first stop valve includes a first shell, a first piston and a first spring; a first piston cavity is provided inside the first shell, and the first piston is built in the first piston cavity; a first air inlet end is provided on the first side of the first shell, a first air outlet end is provided on the second side of the first shell, and a second air inlet end and a first air cavity are provided on the third side of the first shell; the first air cavity is connected to the first piston cavity; the first air outlet end is connected to the first air inlet end through the first piston cavity; the first gas pipeline is connected to the first air inlet end and the first air outlet end; the first spring is connected to the first end of the first piston and the inner wall of the fourth side of the first shell;

[0009] The second pipeline structure includes a second gas pipeline and a first control pipeline. The first end of the first control pipeline is connected to the second gas pipeline, and the second end of the first control pipeline is connected to the second gas inlet end.

[0010] The above dual-line stop valve structure is optional.

[0011] The second pipeline structure also includes a second stop valve; the second stop valve includes a second shell, a second piston and a second spring; a second piston chamber is provided inside the second shell, and the second piston is built in the second piston chamber; a third air inlet end is provided on the first side of the second shell, a second air outlet end is provided on the second side of the second shell, and a fourth air inlet end and a second air chamber are provided on the third side of the second shell; the second air chamber is connected to the second piston chamber; the second air outlet end is connected to the third air inlet end through the second piston chamber; the second air transmission pipeline is connected to the second air inlet end and the second air outlet end; the second spring connects the first end of the second piston and the inner wall of the fourth side of the second shell;

[0012] The first pipeline structure further includes a second control pipeline, a first end of the second control pipeline is connected to the first gas delivery pipeline, and a second end of the second control pipeline is connected to the fourth gas inlet end.

[0013] In the above-mentioned dual-pipeline stop valve structure, optionally, a first sealing ring is provided on the first piston, and the first sealing ring is sleeved on the second end of the first piston.

[0014] In the above-mentioned dual-pipeline stop valve structure, optionally, a second sealing ring is provided on the first piston, and the second sealing ring is adjacent to the first sealing ring and is sleeved on the second end of the first piston.

[0015] The above-mentioned dual-pipeline stop valve structure may, optionally, be provided with a first annular groove and a second annular groove on the first piston, and the first sealing ring and the second sealing ring are respectively sleeved in the first annular groove and the second annular groove.

[0016] The above-mentioned dual-pipeline stop valve structure can optionally include a third sealing ring on the first piston, and the third sealing ring is sleeved on the first end of the first piston.

[0017] The above-mentioned dual-pipeline stop valve structure can optionally include a third annular groove on the first piston, and the third sealing ring is sleeved in the third annular groove.

[0018] In the above-mentioned dual-pipeline stop valve structure, optionally, a fourth annular groove is provided at the first end of the first piston, and the first spring is embedded in the first end of the first piston through the fourth annular groove.

[0019] In the above-mentioned dual-pipe stop valve structure, optionally, a fifth annular groove is provided on the inner wall of the fourth side of the first shell, and the first spring is embedded in the first shell through the fifth annular groove.

[0020] In the above-mentioned dual-pipeline stop valve structure, optionally, the first air outlet end includes a first air outlet channel and a first air outlet port, and the first air outlet channel is connected to the first air outlet port.

[0021] The utility model discloses a double-pipeline stop valve structure. When gas is transported in the first gas pipeline and the second gas pipeline at the same time, the gas in the second pipeline can enter the second gas inlet end and the first gas cavity of the first stop valve through the control pipeline and enter the piston cavity. The first piston is opened by increasing the air pressure, so that the first gas inlet end and the first gas outlet end are connected, so that the gas in the first gas pipeline passes through the first stop valve. At the same time, when the gas in the second pipeline is exhausted, the air pressure in the first gas cavity becomes low, so that the first piston is closed and the gas transportation of the first gas pipeline is cut off. In this way, the problem that the gas in the first gas pipeline continues to be transported when the gas in the second gas pipeline is exhausted can be solved, and the purpose of improving the safety of double-pipeline gas transportation can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a structural schematic diagram of a double-pipeline stop valve structure provided by an embodiment of the utility model;

[0024] Figure 2 It is a structural schematic diagram of a stop valve provided by an embodiment of the utility model;

[0025] Figure 3 This is another structural schematic diagram of a double-pipeline stop valve structure provided by one embodiment of the utility model;

[0026] Among them, A, the first pipeline structure, B, the second pipeline structure, 1, the first stop valve, 2, the button module, 3, the first gas pipeline, 4, the second gas pipeline, 5, the first shell, 6, the first piston, 7, the first spring, 8, the first air inlet end, 9, the first air outlet end, 10, the second air inlet end, 11, the first air cavity, 12, the first control pipeline, 13, the second shell, 14, the second piston, 15, the second spring, 16, the third air inlet end, 17, the second air outlet end, 18, the fourth air inlet end, 19, the second air cavity, 20, the second control pipeline, 21, the first sealing ring, 22, the second sealing ring, 23, the third sealing ring, 24, the first air outlet channel, 25, the first air outlet, 26, the first piston cavity, 27, the second piston cavity, 28, the first annular groove, 29, the second annular groove, 30, the third annular groove, 31, the fourth annular groove, 32, the fifth annular groove. DETAILED DESCRIPTION

[0027] In order to make the technical problems, technical solutions and beneficial effects solved by the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0028] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In order to thoroughly understand the present invention, detailed structures and steps will be presented in the following description to illustrate the technical solution proposed by the present invention. The preferred embodiments of the present invention are described in detail below, but in addition to these detailed descriptions, the present invention may also have other implementations.

[0031] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the disclosure belongs. It will be further understood that the terms used herein should be interpreted as having a meaning consistent with their meaning in the context of this specification and the relevant technology, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.

[0032] In one embodiment, Figure 1-Figure 2 As shown, a structural schematic diagram of a double-pipeline stop valve structure is provided, including a first pipeline structure A and a second pipeline structure B; wherein,

[0033] The first pipeline structure A includes a first stop valve 1 and a first gas pipeline 3; the first stop valve 1110 includes a first housing 5, a first piston 6 and a first spring 7; a first piston chamber 26 is provided inside the first housing 5, and the first piston 6 is built in the first piston chamber 26; a first air inlet end 8 is provided on the first side of the first housing 5, a first air outlet end 9 is provided on the second side of the first housing 5, and a second air inlet end 10 and a first air chamber 11 are provided on the third side of the first housing 5; the first air chamber 11 is connected to the first piston chamber 26; the first air outlet end 9 is connected to the first air inlet end 8 through the first piston chamber 26; the first gas pipeline 3 is connected to the first air inlet end 8 and the first air outlet end 9; the first spring 7 connects the first end of the first piston 6 and the inner wall of the fourth side of the first housing 5;

[0034] The second pipeline structure B includes a second gas pipeline 4 and a first control pipeline 12 , wherein the first control pipeline 12 is connected to the second gas pipeline 4 ; the first control pipeline 12 is connected to the second gas inlet end 10 .

[0035] Optionally, the gas delivered by the first gas delivery pipeline 3 and the gas delivered by the second gas delivery pipeline 4 can be the same or different. When the gas delivered by the first gas delivery pipeline 3 and the gas delivered by the second gas delivery pipeline 4 are different, different first gas delivery pipelines 3 or second gas delivery pipelines 4 can be selected to deliver the specified gas according to actual needs. For example, taking the anesthesia machine using the double-pipeline stop valve structure in this embodiment as an example, the anesthesia machine needs to deliver anesthetic gas and oxygen to the patient at the same time to anesthetize the patient. Delivering oxygen to the patient alone cannot achieve the anesthesia effect. Delivering nitrous oxide alone will threaten the patient's life safety. Therefore, the first gas delivery pipeline 3 can deliver nitrous oxide, and the second gas delivery pipeline 4 can deliver oxygen. When the oxygen is exhausted, the stop valve of the first gas delivery pipeline 3 will close the first piston 6 because the pressure of the first air chamber 11 is too low, thereby blocking the delivery of nitrous oxide. On the contrary, when the nitrous oxide in the first gas delivery pipeline 3 is exhausted, even if the second gas delivery pipeline 4 continuously delivers oxygen for a short period of time, it will not affect the patient's life safety. Therefore, the purpose of avoiding the delivery of nitrous oxide to the patient alone can be achieved, which is conducive to improving the safety of the anesthesia machine.

[0036] The working process of the above-mentioned double-line stop valve structure:

[0037] When the first gas pipeline 3 and the second gas pipeline 4 are conveying gas at the same time, the gas in the second gas pipeline 4 enters the first air cavity 11 from the second gas inlet end 10 of the first stop valve 1 through the first control pipeline 12, so as to lift the first piston 6 by increasing the gas pressure in the first gas cavity 11, and then when the first piston 6 is lifted, the first gas pipeline 3 is connected to the first gas inlet end 8 and the first gas outlet end 9, thereby allowing the gas in the first gas pipeline 3 to be conveyed through the first stop valve 1; when the gas in the second gas pipeline 4 is exhausted, the gas pressure in the first gas cavity 11 is reduced, so that the first piston 6 is closed under the action of the first spring 7, thereby cutting off the gas delivery from the first gas inlet end 8 to the first gas outlet end 9.

[0038] Specifically, the material of the first stop valve 1 in this embodiment can be plastic, metal, ceramic, etc., or a combination of metal, plastic, ceramic, etc. This embodiment does not limit the specific materials of the first gas pipeline 3 and the first stop valve 1.

[0039] The utility model discloses a double-pipeline stop valve structure. When the first gas pipeline 3 and the second gas pipeline 4 are simultaneously conveying gas, the gas in the second pipeline can enter the second gas inlet end 10 and the first gas cavity 11 of the first stop valve 1 through the control pipeline and enter the piston cavity. The first piston 6 is opened by increasing the air pressure, so that the first gas inlet end 8 and the first gas outlet end 9 are connected, so that the gas in the first gas pipeline 3 passes through the first stop valve 1. At the same time, when the gas in the second pipeline is exhausted, the air pressure in the first gas cavity 11 becomes low, so that the first piston 6 is closed, and the gas delivery of the first gas pipeline 3 is cut off. In this way, the problem that the gas in the first gas pipeline 3 continues to be delivered when the gas in the second gas pipeline 4 is exhausted can be solved, and the purpose of improving the safety of double-pipeline gas delivery can be achieved.

[0040] In one embodiment, if Figure 2 - Figure 3 As shown, another structural schematic diagram of a double-pipe stop valve structure is provided. Figure 1 On the basis of the structural schematic diagram of the double-pipeline stop valve structure shown in the figure, the second pipeline structure B of the double-pipeline stop valve structure also includes a second stop valve 2; the second stop valve 2 includes a second housing 13, a second piston 14 and a second spring 15; a second piston chamber 27 is provided inside the second housing 13, and the second piston 14 is built in the second piston chamber 27; a third air inlet end 16 is provided on the first side of the second housing 13, a second air outlet end 17 is provided on the second side of the second housing 13, and a fourth air inlet end 18 and a second air chamber 19 are provided on the third side of the second housing 13; the second air chamber 19 is communicated with the second piston chamber 27; the second air outlet end 17 is communicated with the third air inlet end 16 through the second piston chamber 27; the second air supply pipeline 4 is connected with the second air inlet end 10 and the second air outlet end 17; the second spring 15 is connected with the first end of the second piston 14 and the inner wall of the fourth side of the second housing 13;

[0041] The first pipeline structure A further includes a second control pipeline 20 , a first end of the second control pipeline 20 is connected to the first gas delivery pipeline 3 , and a second end of the second control pipeline 20 is connected to the fourth gas inlet port 18 .

[0042] The working process of the above-mentioned double-line stop valve structure:

[0043] When the first gas pipeline 3 and the second gas pipeline 4 are conveying gas at the same time, the gas in the second gas pipeline 4 enters the first air cavity 11 from the second gas inlet end 10 of the first stop valve 1 through the first control pipeline 12, so as to lift the first piston 6 by increasing the gas pressure in the first gas cavity 11, and then when the first piston 6 is lifted, the first gas pipeline 3 is connected to the first gas inlet end 8 and the first gas outlet end 9, thereby allowing the gas in the first gas pipeline 3 to be conveyed through the first stop valve 1; the gas in the first gas pipeline 3 enters the second air cavity 19 from the fourth gas inlet end 18 of the second stop valve 2 through the second control pipeline 20, so as to lift the second piston 14 by increasing the gas pressure in the second gas cavity 19, and then when the second piston 14 is lifted, the second gas pipeline 4 is connected to the third gas inlet end 16 and the second gas outlet end 17, thereby allowing the gas in the second gas pipeline 4 to be conveyed through the second stop valve 2. When the gas in the second gas pipeline 4 is exhausted, the air pressure in the first air chamber 11 decreases, causing the first piston 6 to close under the action of the first spring 7, thereby cutting off the gas delivery from the first gas inlet end 8 to the first gas outlet end 9; when the gas in the first gas pipeline 3 is exhausted, the air pressure in the second air chamber 19 decreases, causing the second piston 14 to close under the action of the second spring 15, thereby cutting off the gas delivery from the third gas inlet end 16 to the second gas outlet end 17.

[0044] To summarize, in this embodiment, a stop valve is respectively installed on the first gas pipeline 3 and the second gas pipeline 4, so that when the gas in the first gas pipeline 3 is exhausted, the stop valve on the second gas pipeline 4 is closed to block the gas delivery of the second gas pipeline; when the gas in the second gas pipeline 4 is exhausted, the stop valve on the first gas pipeline 3 is closed to block the gas delivery of the first gas pipeline, thereby avoiding the situation of single gas delivery and improving the safety of gas delivery of the equipment.

[0045] In one embodiment, if Figure 1 As shown, in this embodiment, a first sealing ring 21 is provided on the first piston 6 , and the first sealing ring 21 is sleeved on the second end of the first piston 6 .

[0046] In this embodiment, a first sealing ring 21 is provided at the first end of the first piston 6, which is beneficial to improving the air tightness of the first piston 6 when it is closed and reducing the risk of gas leakage.

[0047] In one embodiment, if Figure 1 As shown, in this embodiment, a second sealing ring 22 is provided on the first piston 6 , and the second sealing ring 22 is sleeved adjacent to the first sealing ring 21 on the second end of the first piston 6 .

[0048] In this embodiment, a second sealing ring 22 is provided at the first end of the first piston 6 , which is beneficial to further improve the air tightness of the first piston 6 when it is closed, and can also improve the air tightness of the piston cavity and improve the sensitivity of the switch of the first piston 6 .

[0049] In one embodiment, if Figure 2 As shown, in this embodiment, a first annular groove 28 and a second annular groove 29 are provided on the first piston 6 , and the first sealing ring 21 and the second sealing ring 22 are respectively sleeved in the first annular groove 28 and the second annular groove 29 .

[0050] In this embodiment, a first annular groove 28 and a second annular groove 29 are provided in the second section of the first piston 6, which is conducive to fixing the first sealing ring 21 and the second sealing ring 22, thereby reducing the risk of the first sealing ring 21 and the second sealing ring 22 falling off from the first piston 6, resulting in the airtightness failure of the first stop valve 1.

[0051] In one embodiment, if Figure 2 As shown, in this embodiment, a third sealing ring 23 is provided on the first piston 6 , and the third sealing ring 23 is sleeved on the first end of the first piston 6 .

[0052] The third sealing ring 23 in this embodiment prevents the gas from entering the first piston cavity 26 from the first air cavity 11 and then entering the first piston cavity 26 where the first spring 7 is located through the first end of the first piston 6, which is beneficial to improving the switch sensitivity of the first piston 6.

[0053] In one embodiment, if Figure 2 As shown, in this embodiment, a third annular groove 30 is provided on the first piston 6 , and the third sealing ring 23 is sleeved in the third annular groove 30 .

[0054] The third annular groove 30 in this embodiment reduces the risk of the third sealing ring 23 falling off from the first piston 6 , resulting in reduced switch sensitivity of the first piston 6 .

[0055] It should be noted that more sealing rings may be provided at the first end and the second end of the first piston in this embodiment, such as three, four, etc. The number of sealing rings provided on the first piston is not limited in this embodiment.

[0056] In one embodiment, if Figure 2 As shown, in this embodiment, a fourth annular groove 31 is provided at the first end of the first piston 6 , and the first spring 7 is embedded in the first end of the first piston 6 through the fourth annular groove 31 .

[0057] In one embodiment, if Figure 2 As shown, in this embodiment, a fifth annular groove 32 is provided on the inner wall of the fourth side of the first housing 5 , and the first spring 7 is embedded in the first housing 5 through the fifth annular groove 32 .

[0058] In one embodiment, if Figure 2 As shown, the first air outlet end 9 in this embodiment includes a first air outlet channel 24 and a first air outlet port 25 , and the first air outlet channel 24 is in communication with the first air outlet port 25 .

[0059] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A double-pipe stop valve structure, characterized in that: include: The first pipeline structure and the second pipeline structure; wherein, The first pipeline structure includes a first stop valve and a first gas transmission pipeline; The first stop valve comprises a first housing, a first piston and a first spring; a first piston cavity is provided inside the first housing, and the first piston is built in the first piston cavity; a first air inlet end is provided on the first side of the first housing, a first air outlet end is provided on the second side of the first housing, and a second air inlet end and a first air cavity are provided on the third side of the first housing; the first air cavity is communicated with the first piston cavity; the first air outlet end is communicated with the first air inlet end through the first piston cavity; the first air transmission pipeline is connected with the first air inlet end and the first air outlet end; the first spring is connected with the first end of the first piston and the inner wall of the fourth side of the first housing; The second pipeline structure includes a second gas pipeline and a first control pipeline. The first end of the first control pipeline is connected to the second gas pipeline, and the second end of the first control pipeline is connected to the second gas inlet end.

2. The double-pipe stop valve structure according to claim 1, characterized in that: The second pipeline structure also includes a second stop valve; the second stop valve includes a second shell, a second piston and a second spring; a second piston chamber is provided inside the second shell, and the second piston is built in the second piston chamber; a third air inlet end is provided on the first side of the second shell, a second air outlet end is provided on the second side of the second shell, and a fourth air inlet end and a second air chamber are provided on the third side of the second shell; the second air chamber is connected to the second piston chamber; the second air outlet end is connected to the third air inlet end through the second piston chamber; the second air transmission pipeline is connected to the second air inlet end and the second air outlet end; The second spring connects the first end of the second piston and the fourth side inner wall of the second housing; The first pipeline structure further includes a second control pipeline, a first end of the second control pipeline is connected to the first gas delivery pipeline, and a second end of the second control pipeline is connected to the fourth gas inlet end.

3. The double-pipe stop valve structure according to claim 1, characterized in that: The first piston is provided with a first sealing ring, and the first sealing ring is sleeved on the second end of the first piston.

4. The double-pipeline stop valve structure according to claim 3, characterized in that: The first piston is provided with a second sealing ring, and the second sealing ring is sleeved on the second end of the first piston adjacent to the first sealing ring.

5. The double-pipe stop valve structure according to claim 4, characterized in that: A first annular groove and a second annular groove are provided on the first piston, and the first sealing ring and the second sealing ring are respectively sleeved in the first annular groove and the second annular groove.

6. The double-pipe stop valve structure according to claim 1, characterized in that: A third sealing ring is provided on the first piston, and the third sealing ring is sleeved on the first end of the first piston.

7. The dual-pipeline stop valve structure according to claim 6, characterized in that: The first piston is provided with a third annular groove, and the third sealing ring is sleeved in the third annular groove.

8. The dual-pipeline stop valve structure according to claim 1, characterized in that: A fourth annular groove is provided at the first end of the first piston, and the first spring is embedded in the first end of the first piston through the fourth annular groove.

9. The dual-pipeline stop valve structure according to claim 1, characterized in that: A fifth annular groove is provided on the inner wall of the fourth side of the first shell, and the first spring is embedded in the first shell through the fifth annular groove.

10. The dual-pipeline stop valve structure according to claim 1, characterized in that: The first air outlet end includes a first air outlet channel and a first air outlet port, and the first air outlet channel is communicated with the first air outlet port.

Images