An automatic drain

Abstract

This utility model belongs to the technical field of mixed gas-liquid fluid equipment in the medical instrument industry and industrial automation industry, and provides an automatic drainer, including an upper valve body, a lower valve body, an elastic reset component, and a valve core component. Compared with traditional electronic timed discharge devices or discharge devices composed of liquid level sensors, this application has a reasonable structural design, reduces electronic sensors, has a small overall size, automatically detects liquid level and automatically discharges, and achieves the function of discharging liquid without venting air. At the same time, the control method is simple, does not require circuit control wiring, and the product is safer to use, has a longer lifespan, and lower operating costs.

Description

Technical Field

[0001] This utility model belongs to the field of mixed gas-liquid fluid technology in the medical instrument industry and the field of mixed gas-liquid fluid technology in the industrial automation industry, and specifically relates to an automatic drainer. Background Technology

[0002] Currently, in the field of medical instrument applications, various analytical and therapeutic instruments require compressed air for gas mixing or to provide a power source. Existing solutions involve connecting a filter with physical dehydration capabilities via pipelines, with the filter's built-in float-type automatic drain valve handling the drainage. However, as medical instruments continue to upgrade, the integration of gas system modules is increasing, requiring smaller functional components. Currently, there is no small-sized drain valve that can be directly installed on the gas system integration module to achieve automatic drainage. Essentially, a filter with physical dehydration and automatic drainage functions is installed at the front end of the gas system integration module to achieve gas system drainage. This design is bulky, has low system integration, and its application in the confined space of medical instruments is severely limited. In the field of gas-liquid fluid mixing equipment in industrial automation, such as steam supply systems or air compressor supply systems, condensate generated in the system pipelines can affect the quality of the system gas, reducing the performance of downstream components using the gas. In practice, gas-liquid fluid mixing equipment typically incorporates automatic drain valves to discharge condensate generated in the system pipelines.

[0003] Conventional automatic drainers come in various structural forms, including mechanical float type and electronic control type. In low-pressure gas supply systems of 0-15 bar, mechanical float type automatic drainers are usually installed. Their advantage is that they can automatically detect the liquid level. When the liquid accumulates in the container to a certain level, the float rises and drives the draining device to open the valve to achieve automatic drainage. When the liquid is discharged to a certain level, the float resets and the draining device is reset by the gas, and the valve closes. In medium-pressure gas systems above 15 bar, mechanical float-type automatic drainers cannot withstand medium to high gas pressures. Electronically controlled automatic drainers, such as timed drainers, are generally selected. These drainers are pre-set to open the solenoid valve at set times to drain the gas. However, they lack water level detection, meaning they will drain even when there is no liquid in the system, resulting in pressure loss. They are also larger and more expensive. Alternatively, in medium-pressure gas systems above 15 bar, automatic drainers with liquid level sensors are also used. When the liquid level in the container rises to a set level, the sensor detects the liquid and sends a signal to the control system. The control system then opens the solenoid valve to drain the liquid. When the liquid level drops to a low level, the control system closes the solenoid valve. Automatic drainers with liquid level sensors can drain liquid without losing gas, but they are larger, more expensive, and have more complex control methods. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of this utility model is to provide an automatic drainer.

[0005] The technical solution adopted by this utility model to solve its technical problem is: An automatic drainer includes an upper valve body, a lower valve body, a resilient reset element, and a valve core element; The upper valve body is provided with an upper cavity and a first liquid channel for liquid to pass through, and the upper cavity is connected to the first liquid channel. The lower valve body is provided with a lower cavity and a second liquid channel for liquid to pass through, and the lower cavity is connected to the second liquid channel. One end of the lower valve body is detachably connected to the cavity opening of the upper cavity of the upper valve body; The valve core is disposed in the upper valve body and slides in cooperation with the upper cavity and the first gas passage. One end of the elastic reset member abuts against the valve core, and the other end abuts against the lower valve body; During the sliding process of the valve core relative to the upper valve body, the valve core can block the connection between the upper cavity and the lower cavity, or can move away from the connection between the upper cavity and the lower cavity.

[0006] Preferably, the valve core component includes a first valve core portion and a second valve core portion, wherein the first valve core portion is disposed above the second valve core portion; The first valve core has several through holes, and the bottom of the second valve core has an assembly groove for placing one end of the elastic reset member. During the sliding process of the valve core relative to the upper valve body, the second valve core can block the connection between the upper cavity and the lower cavity, or can move away from the connection between the upper cavity and the lower cavity.

[0007] Preferably, the valve core has a convex structure, the cross-sectional dimension of the first valve core is smaller than that of the second valve core, the first valve core is provided with a valve core cavity, and a plurality of through holes are evenly distributed on the outer wall surface of the first valve core with the central axis of the first valve core as the center, and the through holes are connected to the valve core cavity.

[0008] Preferably, a first sealing ring is provided on the lower valve body and along the opening of the lower cavity. When the valve core abuts against the first sealing ring, the valve core blocks the connection between the upper cavity and the lower cavity.

[0009] Preferably, a second sealing ring is provided at the connection between one end of the lower valve body and the cavity opening of the upper cavity of the upper valve body.

[0010] Preferably, one end of the lower valve body is provided with a mounting groove for placing the second sealing ring body.

[0011] Preferably, the lower cavity includes a constriction section and a throat section. The constriction section has a conical structure, and a small port of the constriction section is connected to one end of the throat section. The other end of the throat section is connected to the second liquid channel section, and the cross-sectional dimension of the second liquid channel section is larger than the cross-sectional dimension of the throat section.

[0012] Preferably, the first liquid channel portion and the second liquid channel portion are provided with threaded portions, and one end of the lower valve body is connected to the cavity opening of the upper cavity of the upper valve body by a thread.

[0013] Preferably, the elastic reset element is a spring.

[0014] Compared with the prior art, the beneficial effects of this utility model include: Compared with traditional electronic timed discharge devices or discharge devices composed of liquid level sensors, this application has a reasonable structural design, reduces the number of electronic sensors, has a small overall size, automatically detects liquid level and discharges, and automatically resets, achieving the function of discharging liquid without venting air. It can be directly set into the system integration module or installed separately in the gas system circuit of industrial automation. It does not need to be installed in the liquid container, such as the cavity of a common filter cup, so the installation is convenient. At the same time, the control method is simple, no circuit control wiring is required, the product is safer to use, has a longer lifespan, and has a lower operating cost. Attached Figure Description

[0015] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of this utility model.

[0018] Figure 3 This is a three-dimensional structural diagram of the valve core component of this utility model.

[0019] in: 1-Upper valve body, 11-Upper cavity, 12-First liquid channel section; 2-Lower valve body, 21-Lower cavity, 211-Contraction section, 212-Throat section, 22-Second liquid passage section, 23-Mounting groove; 3-Valve core component, 31-First valve core part, 32-Second valve core part, 33-Through hole part, 34-Valve core cavity, 35-First sealing ring body, 36-Second sealing ring body; 4-Elastic reset element. Detailed Implementation

[0020] To better understand the above-mentioned objectives, features, and advantages of this utility model, it will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. Many specific details are set forth in the following description to provide a thorough understanding of this utility model; the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0022] Example 1 like Figure 1-3 As shown, this embodiment provides an automatic drainer, including an upper valve body 1, a lower valve body 2, a piston, an elastic reset component 4, and a valve core component 3; The upper valve body 1 is provided with an upper cavity 11 and a first liquid channel 12 for liquid to pass through, and the upper cavity 11 and the first liquid channel 12 are connected. The lower valve body 2 is provided with a lower cavity 21 and a second liquid channel 22 for liquid to pass through, and the lower cavity 21 and the second liquid channel 22 are connected. One end of the lower valve body 2 is detachably connected to the cavity opening of the upper cavity 11 of the upper valve body 1; The valve core 3 is disposed inside the upper valve body 1 and slides in cooperation with the upper cavity 11 and the first gas passage. One end of the elastic reset member 4 abuts against the valve core member 3, and the other end abuts against the lower valve body 2; During the sliding process of the valve core 3 relative to the upper valve body 1, the valve core 3 can block the connection between the upper cavity 11 and the lower cavity 21, or can move away from the connection between the upper cavity 11 and the lower cavity 21.

[0023] In this embodiment, the outlet end of the steam supply system or the air compressor supply system is connected to the first liquid passage 12 of the upper valve body 1. The pressurized gas or the pressurized gas of the steam supply system or the air compressor supply system acts on the valve core 3, driving the valve core 3 to overcome the elastic force of the elastic reset member 4 and slide relative to the upper valve body 1, so that the valve core 3 can block the connection between the upper cavity 11 and the lower cavity 21, achieving a gas self-sealing effect. Due to gravity, the liquid mixed in the gas accumulates in the upper cavity 11. When the liquid level exceeds the upper plane of the valve core 3, the valve core 3 opens due to the incompressibility of the liquid. Under the elastic force of the elastic reset member 4, the valve core 3 moves away from the connection between the upper cavity 11 and the lower cavity 21, and the connection between the upper cavity 11 and the lower cavity 21 is in the open state. Under the pressure of the gas and gravity, the liquid in the upper cavity 11 is discharged through the second liquid channel 22. When the liquid level in the upper cavity 11 is lower than the upper plane of the valve core 3, the gas pressure acts on the upper plane of the valve core 3, driving the valve core 3 to move downward. The valve core 3 blocks the connection between the upper cavity 11 and the lower cavity 21, and the second liquid channel 22 returns to the closed state, thus realizing gas self-sealing again.

[0024] The specific structure of valve core 3 in this embodiment is as follows: The valve core component 3 includes a first valve core portion 31 and a second valve core portion 32, with the first valve core portion 31 disposed above the second valve core portion 32. The first valve core 31 is provided with a plurality of through holes 33, and the bottom of the second valve core 32 is provided with an assembly groove for placing one end of the elastic reset member 4. During the sliding process of the valve core 3 relative to the upper valve body 1, the second valve core 32 can block the connection between the upper cavity 11 and the lower cavity 21, or can move away from the connection between the upper cavity 11 and the lower cavity 21.

[0025] Specifically, the valve core 3 has a convex structure. The cross-sectional dimension of the first valve core 31 is smaller than that of the second valve core 32. The first valve core 31 is provided with a valve core cavity 34. Several through holes 33 are evenly distributed on the outer wall surface of the first valve core 31 with the central axis of the first valve core 31 as the center. The through holes 33 are connected to the valve core cavity 34.

[0026] Meanwhile, a first sealing ring 35 is provided on the lower valve body 2 and along the opening of the lower cavity 21. When the valve core 3 abuts against the first sealing ring 35, the valve core 3 blocks the connection between the upper cavity 11 and the lower cavity 21.

[0027] A second sealing ring 36 is provided at the connection between one end of the lower valve body 2 and the cavity opening of the upper cavity 11 of the upper valve body 1.

[0028] The above structure can ensure the sealing effect and the airtightness of the sealing effect.

[0029] Meanwhile, in order to facilitate the installation of the sealing ring, an installation groove 23 for placing the second sealing ring 36 is provided at one end of the lower valve body 2.

[0030] In this embodiment, the lower cavity 21 includes a constriction section 211 and a throat section 212. The constriction section 211 has a conical structure, and its small port is connected to one end of the throat section 212. The other end of the throat section 212 is connected to the second liquid channel section 22, and the cross-sectional dimension of the second liquid channel section 22 is larger than that of the throat section 212. This structure allows for increased flow velocity and negative pressure as the liquid flows through the lower cavity 21 and the second liquid channel section 22, ensuring that the liquid can be quickly discharged through the second liquid channel section 22.

[0031] In this embodiment, the first liquid channel section 12 and the second liquid channel section 22 are provided with threaded sections. One end of the lower valve body 2 is connected to the cavity opening of the upper cavity 11 of the upper valve body 1 by a thread. The structure of the above threaded section can facilitate the connection to the outlet end of an external steam supply system or an air compressor supply system.

[0032] Specifically, the elastic reset component 4 is a spring component.

[0033] In summary, compared with traditional electronic timed discharge devices or discharge devices composed of liquid level sensors, this embodiment has a reasonable structural design, reduces the number of electronic sensors, has a small overall size, automatically detects liquid level and discharges, and automatically resets, achieving the function of discharging liquid without venting air. It can be directly installed in the system integration module or installed separately in the gas system loop of industrial automation. It does not need to be installed inside the liquid container, such as the cavity of a common filter cup, so the installation is convenient. At the same time, the control method is simple, no circuit control wiring is required, the product is safer to use, has a longer lifespan, and has low operating costs.

[0034] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. An automatic drainer, characterized in that, Includes upper valve body, lower valve body, elastic reset component, and valve core component; The upper valve body is provided with an upper cavity and a first liquid channel for liquid to pass through, and the upper cavity is connected to the first liquid channel. The lower valve body is provided with a lower cavity and a second liquid channel for liquid to pass through, and the lower cavity is connected to the second liquid channel. One end of the lower valve body is detachably connected to the cavity opening of the upper cavity of the upper valve body; The valve core is disposed in the upper valve body and slides in cooperation with the upper cavity and the first gas passage. One end of the elastic reset member abuts against the valve core, and the other end abuts against the lower valve body; During the sliding process of the valve core relative to the upper valve body, the valve core can block the connection between the upper cavity and the lower cavity, or can move away from the connection between the upper cavity and the lower cavity.

2. An automatic drainer according to claim 1, characterized in that, The valve core component includes a first valve core portion and a second valve core portion, wherein the first valve core portion is disposed above the second valve core portion; The first valve core has several through holes, and the bottom of the second valve core has an assembly groove for placing one end of the elastic reset member. During the sliding process of the valve core relative to the upper valve body, the second valve core can block the connection between the upper cavity and the lower cavity, or can move away from the connection between the upper cavity and the lower cavity.

3. An automatic drainer according to claim 2, characterized in that, The valve core has a convex structure. The cross-sectional dimension of the first valve core is smaller than that of the second valve core. The first valve core has a valve core cavity. Several through holes are evenly distributed on the outer wall of the first valve core with the central axis of the first valve core as the center. The through holes communicate with the valve core cavity.

4. An automatic drainer according to claim 1, characterized in that, A first sealing ring is provided on the lower valve body and along the opening of the lower cavity. When the valve core abuts against the first sealing ring, the valve core blocks the connection between the upper cavity and the lower cavity.

5. An automatic drainer according to claim 1, characterized in that, A second sealing ring is provided at the connection between one end of the lower valve body and the cavity opening of the upper cavity of the upper valve body.

6. An automatic drainer according to claim 5, characterized in that, One end of the lower valve body is provided with a mounting groove for placing the second sealing ring.

7. An automatic drainer according to claim 1, characterized in that, The lower cavity includes a constriction section and a throat section. The constriction section has a conical structure. The small port of the constriction section is connected to one end of the throat section. The other end of the throat section is connected to the second liquid channel section. The cross-sectional dimension of the second liquid channel section is larger than that of the throat section.

8. An automatic drainer according to claim 1, characterized in that, The first liquid channel section and the second liquid channel section are provided with threaded sections, and one end of the lower valve body is connected to the cavity opening of the upper cavity of the upper valve body by a thread.

9. An automatic drainer according to claim 1, characterized in that, The elastic reset component is a spring.

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