Valve terminal structure with variable flow

Abstract

The utility model relates to the technical field of breathing instruments, in particular to a variable-flow valve terminal structure which comprises a valve terminal valve body, a high-pressure medium channel is formed in the valve terminal valve body in the length direction, and the valve terminal valve body is provided with a plurality of first air channels communicated with the high-pressure medium channel. L-shaped second air channels corresponding to the first air channels are formed in the valve terminal valve body, and electromagnetic valves are arranged at the corresponding ends of the first air channels and the second air channels. A high-pressure medium inlet is formed in one end of the high-pressure medium channel, and a high-pressure monitoring port is formed in the other end of the high-pressure medium channel; a connector is arranged at the end, away from the electromagnetic valve, of the second air channel and connected with an air outlet pipeline, and a resistance piece is arranged at the end, away from the connector, of the air outlet pipeline and used for adjusting the air flow. According to the valve terminal structure, precise control over small-flow gas is achieved, and the convenience of installation of the valve terminal structure is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a breathing apparatus technical field especially, it relates to a variable flow's valve island structure. BACKGROUND

[0002] The existing valve island technology realizes the control under the large flow, for example, the control above 100L / min flow, but does not realize the accurate control of the gas flow below 100L / min, and the existing valve island technology is higher in integration, so it is relatively fixed, the combination is relatively unable to change, leading to insufficient flexibility. SUMMARY

[0003] The utility model discloses at least one of the technical problems in the related art is solved, for this purpose, the utility model provides a variable flow's valve island structure, the technical problem that the small flow is difficult to accurate control of prior art is solved, realizes the accurate control to the small flow gas, the valve island structure of the utility model is convenient to dismount, has improved the convenience of valve island structure installation.

[0004] The utility model provides a variable flow's valve island structure, it includes:

[0005] Valve island valve body, the high pressure medium passage is formed along the length direction in the valve island valve body, the valve island valve body is opened with the first gas passage of a plurality of first gas passages that are connected to the high pressure medium passage, the second gas passage that is L-shaped is opened in the valve island valve body and corresponds to each first gas passage, and the corresponding end of the first gas passage and the second gas passage is provided with a solenoid valve;

[0006] One end of the high pressure medium passage forms a high pressure medium inlet and the other end forms a high pressure monitoring port, and a high pressure monitoring sensor is arranged at the high pressure monitoring port;

[0007] The end of the second gas passage away from the solenoid valve is provided with a connector, the connector is connected with a gas outlet pipeline, the end of the gas outlet pipeline away from the connector is provided with a resistance piece, and the resistance piece is used to adjust the flow of gas.

[0008] The further improvement of the utility model variable flow's valve island structure is that the first pipe connector is arranged at the high pressure medium inlet.

[0009] The further improvement of the utility model variable flow's valve island structure is that the gas outlet pipeline and the resistance piece are tightly connected.

[0010] The further improvement of the utility model variable flow's valve island structure is that the resistance piece includes a resistance shell and a resistance core arranged in the resistance shell, and the inner diameter size of the position close to the gas outlet pipeline of the resistance shell is greater than the inner diameter size of the position away from the gas outlet pipeline.

[0011] The further improvement of the variable flow valve island structure lies in that an insertion section is formed at the end of the resistance shell, and the outer diameter size of the insertion section close to the end position is smaller than the outer diameter size close to the center position.

[0012] The further improvement of the variable flow valve island structure lies in that the air outlet pipeline is made of flexible material.

[0013] The further improvement of the variable flow valve island structure lies in that the joint and the second air passage are tightly connected or threadedly connected, and the joint and the air outlet pipeline are tightly connected.

[0014] The further improvement of the variable flow valve island structure lies in that the joint is connected to the end of the air outlet pipeline to form a connection section, and the outer diameter size of the connection section close to the end position is smaller than the outer diameter size close to the center position.

[0015] The above one or more technical solutions in the utility model embodiment have at least one of the following technical effects: through the double control mechanism of the electromagnetic valve and the resistance piece, the accurate adjustment of the trace gas flow can be realized, the flow control range is reduced to the minimum 1 mL / min, and the strict requirements of small flow application are met. The technical solution allows the flexible configuration of the number of the first air passages in the valve island structure, and the size of the resistance piece can be adjusted, so that the flow is adjusted in a wider range. In addition, through the tightly fitted connection of the air outlet pipeline, the joint and the resistance piece, the pipeline connection stability of the valve island structure is enhanced, and the impact of high-pressure gas on the air outlet pipeline and the resistance piece is effectively prevented.

[0016] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or will be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating laboriously.

[0018] Figure 1 It is a schematic diagram of the variable flow valve island structure provided by the utility model embodiment Figure 1 .

[0019] Figure 2 It is Figure 1 the enlarged schematic diagram of A-A.

[0020] Figure 3 is a variable flow valve island structure provided by the embodiment of the present application Figure 2 .

[0021] Figure 4 is Figure 3 the enlarged schematic view of B-B in FIG.

[0022] Reference signs:

[0023] 1, high-pressure medium inlet; 2, valve island valve body; 3, gas outlet pipeline; 4, electromagnetic valve; 5, high-pressure monitoring port; 6, joint; 7, resistance piece; 71, resistance shell; 72, resistance core; 8, high-pressure medium channel. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0025] The variable flow valve island structure of the present application will be described below in combination with Figure 1 and Figure 3 A variable flow valve island structure comprises:

[0026] The valve island valve body 2 has a high-pressure medium channel 8 formed in the length direction inside the valve island valve body 2. The valve island valve body 2 is provided with a plurality of first air passages communicated with the high-pressure medium channel 8. The valve island valve body 2 is provided with a second air passage in the shape of L corresponding to each first air passage. The first air passage and the corresponding end of the second air passage are provided with an electromagnetic valve 4.

[0027] One end of the high-pressure medium channel 8 forms a high-pressure medium inlet 1 and the other end forms a high-pressure monitoring port 5. The high-pressure monitoring port 5 is provided with a high-pressure monitoring sensor.

[0028] The end of the second air passage away from the electromagnetic valve 4 is provided with a joint 6. The joint 6 is connected with a gas outlet pipeline 3. The end of the gas outlet pipeline 3 away from the joint 6 is provided with a resistance piece 7. The resistance piece 7 is used to adjust the flow of gas.

[0029] In a specific implementation case, as Figure 2 and Figure 4As shown, the valve island structure is located in a breathing machine, and a control system of the breathing machine can be connected to the electromagnetic valve 4, the resistance piece 7 and the high-pressure monitoring sensor, the gas flow of the high-pressure medium passage 8 is monitored through the high-pressure monitoring sensor, the valve body 2 of the valve island is prevented from being damaged by high-pressure gas, when the gas flow is too large, the high-pressure monitoring sensor can quickly perceive and send a signal, the electromagnetic valve 4 is regulated through the control system, and the on-off or flow size of the gas is adjusted in time, so that the valve body 2 of the valve island and internal components are effectively protected from the impact and damage of high-pressure gas, in addition, through the cooperation of the second airway and the resistance piece 7, the gas flow can be further accurately adjusted to meet different process requirements.

[0030] In a preferred embodiment of the variable flow valve island structure of the utility model, as shown in Figure 2 and Figure 4 , a first pipe joint is arranged at the high-pressure medium inlet 1, and the first pipe joint is convenient for being connected to a gas source.

[0031] Preferably, the gas outlet pipeline 3 and the resistance piece 7 are tightly connected, so as to ensure the connection stability of the gas outlet pipeline 3 and the resistance piece 7, and the tightly connected mode also has good sealing performance, so as to prevent gas leakage, thereby ensuring the working efficiency and stability of the valve island structure.

[0032] Further, the resistance piece 7 comprises a resistance shell 71 and a resistance core 72 arranged in the resistance shell 71, the inner diameter size of the resistance shell 71 close to the position of the gas outlet pipeline 3 is greater than the inner diameter size of the position far away from the gas outlet pipeline 3, and a tapered structure is formed, so that the flow rate of the gas gradually decreases when passing through the resistance piece 7, thereby realizing accurate control of the gas flow, and the resistance core 72 further enhances the adjustment function of the resistance piece 7, and the position or shape of the resistance core 72 can be adjusted to further fine-tune the gas flow, so as to meet more fine process requirements.

[0033] Preferably, the resistance shell 71 of the resistance piece 7 is made of high-strength and corrosion-resistant material, which can resist the impact and corrosion of high-pressure gas and prolong the service life of the valve island structure. At the same time, the cooperation design between the resistance core 72 and the resistance shell 71 is convenient for disassembly and cleaning, thereby reducing the maintenance cost and working difficulty.

[0034] Further, an insertion section is formed at the end of the resistance shell 71, the outer diameter size of the insertion section close to the end position is smaller than the outer diameter size close to the central position, thereby improving the connection stability of the resistance shell 71 and the gas outlet pipeline 3.

[0035] Preferably, the gas outlet pipeline 3 is made of flexible material.

[0036] Preferably, the joint 6 and the second air passage are tightly connected or threadedly connected, and the joint 6 and the gas outlet pipe 3 are tightly connected, thereby improving the connection stability of the joint 6 and the gas outlet pipe 3 and the connection stability of the joint 6 and the valve island valve body 2.

[0037] Preferably, the joint 6 is connected to the end of the gas outlet pipe 3 to form a connecting section, and the outer diameter of the connecting section near the end position is smaller than the outer diameter near the center position, which makes the connection of the joint 6 and the gas outlet pipe 3 more compact and less likely to loosen. This design not only ensures the stability of the gas during transmission, but also avoids the problem of gas leakage caused by loose connection or poor sealing, thereby improving the safety and reliability of the entire valve island structure.

[0038] The above one or more technical solutions in the embodiments of the utility model have at least one of the following technical effects: through the double control of the electromagnetic valve 4 and the resistance piece 7, the precise control of small flow gas can be realized, the range of flow control is minimized to 1 mL / min, and the requirements of small flow application can be met. The number of the first air passage in the valve island structure can be flexibly adjusted, and the size of the resistance piece 7 can be changed, so that the flow is adjusted in a larger range; the utility model is tightly connected through the gas outlet pipe 3, the joint 6 and the resistance piece 7, thereby improving the pipeline connection stability of the valve island structure, and avoiding that the high-pressure gas flushes away the gas outlet pipe 3 and the resistance piece 7.

[0039] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A variable flow valve island structure, characterized in that, include: The valve island valve body has a high-pressure medium channel formed along its length. The valve island valve body has a plurality of first air passages connected to the high-pressure medium channel. The valve island valve body has an L-shaped second air passage corresponding to each of the first air passages. Solenoid valves are provided at the corresponding ends of the first air passages and the second air passages. One end of the high-pressure medium channel forms a high-pressure medium inlet and the other end forms a high-pressure monitoring port, and a high-pressure monitoring sensor is installed at the high-pressure monitoring port; The second air passage has a connector at the end away from the solenoid valve, the connector is connected to an air outlet pipe, and the end of the air outlet pipe away from the connector has a resistance element, which is used to adjust the air flow rate.

2. The variable flow valve island structure according to claim 1, characterized in that, A first pipe joint is provided at the high-pressure medium inlet.

3. The variable flow valve island structure according to claim 1, characterized in that, The air outlet pipe and the resistance component are tightly fitted together.

4. The variable flow valve island structure according to claim 3, characterized in that, The resistance component includes a resistance housing and a resistance core disposed within the resistance housing. The inner diameter of the resistance housing near the outlet pipe is larger than the inner diameter of the position away from the outlet pipe.

5. The variable flow valve island structure according to claim 4, characterized in that, The end of the resistance housing is formed with a plug-in section, and the outer diameter of the plug-in section near the end is smaller than the outer diameter near the center.

6. The variable flow valve island structure according to claim 1, characterized in that, The air outlet pipe is made of a flexible material.

7. The variable flow valve island structure according to claim 1, characterized in that, The connector and the second air passage are tightly fitted or threaded together, and the connector and the air outlet pipe are tightly fitted together.

8. The variable flow valve island structure according to claim 7, characterized in that, The connector is connected to the end of the air outlet pipe and forms a connecting section, wherein the outer diameter of the connecting section near the end is smaller than the outer diameter near the center.

Images