Automatic drain device

Abstract

The utility model discloses an automatic drainage device, include: water inlet module, water inlet module includes water inlet pipeline, be equipped with filter in water inlet pipeline, water inlet module still include back flush structure for with filter is washed, liquid storage module, liquid storage module includes cavity, the entrance of water inlet pipeline is used for with drainage equipment connection, and the export is communicated with the cavity, drainage module, drainage module is equipped with the drainage tube, and the entrance of drainage tube is located in the cavity near the bottom position, and the export is communicated with the collection container.

Description

Technical Field

[0001] This utility model relates to the field of waste liquid treatment, and in particular to an automatic drainage device. Background Technology

[0002] During the operation of gas processing, compressed air purification, and pressure swing adsorption (PSA) nitrogen / oxygen generation systems, condensate is produced during gas cooling and throttling, carrying oil mist and solid particles. To prevent downstream equipment from being contaminated or corroded, automatic drainage devices are typically installed in the pipelines to promptly remove the condensate and impurities.

[0003] Existing technologies typically employ filters to filter condensate and then discharge it directly. However, this method of wastewater discharge easily leads to the release of large amounts of waste gas, and the filters are prone to malfunction due to prolonged use, affecting drainage efficiency.

[0004] There is currently no effective solution to the above problems in existing technologies. Utility Model Content

[0005] To solve the above problems, this utility model provides an automatic drainage device. By setting up a liquid storage module and a drainage module in cooperation, the exhaust gas is stored in the liquid storage module and will not be discharged. The backwashing structure effectively washes the filter, reducing the chance of filter clogging and improving its service life and drainage life.

[0006] To achieve the above objectives, this utility model provides a water inlet module, which includes a water inlet pipe with a filter installed in it; the water inlet module also includes a backwashing structure for cleaning the filter; a liquid storage module, which includes a cavity, with the inlet end of the water inlet pipe connected to a drainage device and the outlet end connected to the cavity; and a drainage module, which includes a drain pipe with the inlet end located near the bottom of the cavity and the outlet end connected to a collection container.

[0007] Optionally, the backwash structure includes: a backwash pipe, both ends of which are connected to the inlet pipe and are located on opposite sides of the filter; the backwash pipe is equipped with a first shut-off valve; a drain pipe, the inlet end of which is connected to the inlet pipe and the outlet end of which is connected to a drain container; the inlet end of which is located on the inlet side of the filter; the drain pipe is equipped with a second shut-off valve; the inlet pipe includes a third shut-off valve and a fourth shut-off valve, the third shut-off valve being located between the inlet end of the backwash pipe and the filter, and the fourth shut-off valve being located on the outlet side of the backwash pipe; wherein the inlet side is the inlet side of the conventional filtration process, and the outlet side is the outlet side of the conventional filtration process.

[0008] Optionally, the width of the inlet end of the backflush tube is greater than the width of the outlet end.

[0009] Further optionally, a positioning guide rod is also included: the positioning guide rod is used to control the first shut-off valve, the third shut-off valve and the fourth shut-off valve.

[0010] Alternatively, a check valve may be provided at the outlet end of the backflush tube.

[0011] Optionally, the liquid storage module includes a liquid level detection probe; the drainage module includes a solenoid valve, and the liquid level detection probe can be electrically connected to the solenoid valve.

[0012] Optionally, the liquid storage module includes three liquid level detection probes; the three liquid level detection probes are positioned at different heights to transmit different signals according to different liquid level heights.

[0013] Alternatively, the highest level detection probe is connected to the alarm; the middle level detection probe and the lowest level detection probe are both electrically connected to the solenoid valve.

[0014] Optionally, the liquid storage module includes a vertically arranged support column, and the liquid level detection probe is movably connected to the support column.

[0015] Alternatively, the recoil pipe may be a bellows.

[0016] The above technical solution has the following beneficial effects: through modular coupling design, automatic discharge of condensate and gas loss is achieved; the filter screen can be cleaned by backflushing to avoid clogging, improve service life and purification effect; and the drainage module effectively drains the liquid storage module to avoid exhaust gas emission. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the automatic drainage device provided in an embodiment of the present invention.

[0019] Reference numerals in the attached diagram: 1-Water inlet module; 101-Water inlet pipe; 102-Filter; 103-Backflush pipe; 104-Drainage pipe; 105-First shut-off valve; 106-Third shut-off valve; 107-Fourth shut-off valve; 108-Second shut-off valve; 109-Positioning guide rod; 2-Liquid storage module; 201-Liquid level detector; 3-Drainage module; 301-Drainage pipe. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] To address the problems of easy exhaust gas discharge and filter clogging in existing drainage devices, this invention provides an automatic drainage device. Please refer to [reference needed]. Figure 1 , Figure 1 This is a schematic diagram of the automatic drainage device provided in an embodiment of the present invention.

[0022] The automatic drainage device provided in this embodiment includes: a water inlet module 1, which includes a water inlet pipe 101 and a filter 102 in the water inlet pipe 101; the water inlet module 1 also includes a backflushing structure for cleaning with the filter 102; a liquid storage module 2, which includes a cavity, the inlet end of the water inlet pipe 101 is used to connect to the drainage device, and the outlet end is connected to the cavity; and a drainage module 3, which is provided with a drain pipe 301, the inlet end of the drain pipe 301 is located near the bottom of the cavity, and the outlet end is connected to a collection container.

[0023] The water inlet module 1 includes an inlet pipe 101 (which can be made of metal or corrosion-resistant plastic), and a filter 102 is connected in series on the inlet pipe 101. The filter 102 is preferably a washable V-shaped filter screen, coaxially connected to the inlet pipe 101, with its inlet end connected to the outlet of the drainage device and its outlet connected to the cavity of the storage module 2. The filter 102 has an internal support frame to ensure shape stability under pressure differential, and the filtration accuracy can be selected according to the operating conditions. For ease of maintenance, the filter 102 housing is equipped with an openable end cap or a pull-out filter element guide seat, and the end cap is equipped with a sealing ring to ensure a tight seal at the connection.

[0024] The water inlet module 1 also includes a backwashing structure that works in conjunction with the filter 102 to clean the filter. The backwashing structure forms a reversible flow channel with the downstream side of the filter or the side wall of the housing. During backwashing, the liquid flows across the filter screen surface in the opposite direction to normal filtration, peeling off attached impurities and carrying them away with the backwash flow. The backwashing structure can achieve reverse flow through a built-in flow channel layout, guide cavity, or switchable flow direction component. During backwashing, the backwashing channel is open, restricting the normal water inlet flow path or creating a pressure differential, thus completing in-situ cleaning of the filter screen without disassembling the filter. After backwashing, the backwashing channel closes, restoring the normal filtration channel.

[0025] The liquid storage module 2 includes a cavity for collecting liquid. The cavity is a closed or semi-closed chamber, with its inlet connected to a water inlet pipe 101, allowing filtered liquid to enter and be temporarily stored within it. The inner wall of the cavity can be smooth to reduce sedimentation, and the cavity has an interface portion that matches the drainage pipe 301 of the drainage module 3. The volume of the cavity is determined according to the discharge cycle and the peak inflow rate of the liquid, to ensure stable liquid storage and suppress turbulence before discharge.

[0026] The drainage module 3 is equipped with a drainage pipe 301. The inlet end of the drainage pipe 301 is located near the bottom of the cavity to ensure that the inlet end of the drainage pipe 301 is always below the liquid level, preventing gas from escaping from the cavity. The drainage pipe 301 is sealed to the cavity. The outlet end of the drainage pipe 301 is connected to a collection container, forming a stable discharge path to guide the liquid in the cavity into a waste liquid container for collection and treatment. The drainage module 3 can use a water pump to pump water and guide the pumped water into the collection container.

[0027] The drainage module 3 also includes multiple manual control buttons for controlling the start / stop and speed settings of the drainage module 3.

[0028] The liquid entering the device first reaches the filter 102 through the inlet pipe 101. The filter 102 intercepts impurities in the liquid, and the purified liquid enters the cavity of the liquid storage module 2 through the outlet of the filter 102 and is collected. As the liquid accumulates in the cavity, when the filter 102 needs to be cleaned, the backflushing structure causes the liquid entering through the inlet to flow across the filter screen surface in the opposite direction to normal filtration, peeling off the attached impurities and draining them away with the backflushing flow, and then the normal filtration flow direction is restored. During the discharge stage, the inlet end of the drain pipe 301 near the bottom of the cavity draws the liquid out of the cavity and guides it into the collection container for collection.

[0029] As an optional implementation, the backwash structure includes: a backwash pipe 103, both ends of which are connected to the inlet pipe 101 and are respectively located on both sides of the filter 102; the backwash pipe 103 is provided with a first shut-off valve 105; a sewage pipe 104, the inlet end of which is connected to the inlet pipe 101 and the outlet end is used to connect to the sewage container; the inlet end of the sewage pipe 104 is located on the inlet side of the filter 102; the sewage pipe 104 is provided with a second shut-off valve 108; the inlet pipe 101 includes a third shut-off valve 106 and a fourth shut-off valve 107, the third shut-off valve 106 is located between the inlet end of the backwash pipe 103 and the filter 102, and the fourth shut-off valve 107 is located on the outlet side of the backwash pipe 103; wherein, the inlet side is the inlet side of the conventional filtration process, and the outlet side is the outlet side of the conventional filtration process.

[0030] Taking the direction of water flow for normal filtration of liquid as the positive direction, the left side of filter 102 is the inlet side and the right side is the outlet side.

[0031] Both ends of the backflush pipe 103 are connected to the inlet pipe 101 and are located on the inlet side and outlet side of the filter 102, respectively, so that the backflush pipe 103 is arranged across the filter 102 at the connection position. A first shut-off valve 105 is provided on the backflush pipe 103 to control the on / off state of the backflush pipe 103.

[0032] The inlet end of the sewage discharge pipe 104 is connected to the inlet water pipe 101, and the outlet end is used to connect to the sewage discharge container. The inlet end of the sewage discharge pipe 104 is located on the inlet side of the filter 102, and is used to discharge the stripped impurities and sewage during the backwashing process. A second shut-off valve 108 is installed on the sewage discharge pipe 104 to control the opening and closing of the sewage discharge path. The second shut-off valve 108 can be a manually controlled valve, so that the opening and closing of the sewage discharge path can be controlled by manual operation.

[0033] The water inlet pipe 101 includes a third shut-off valve 106 and a fourth shut-off valve 107. The third shut-off valve 106 is located between the inlet end of the backflush pipe 103 and the filter 102, and is used to cut off the normal flow path from the water inlet side to the filter 102 during backflush. The fourth shut-off valve 107 is located between the outlet end of the backflush pipe 103 and the filter 102, and is used to cut off the normal flow path of water into the liquid storage module 2 during backflush.

[0034] As an optional implementation, the width of the inlet end of the backflushing pipe 103 is greater than the width of the outlet end.

[0035] By setting a larger width at the inlet, a larger flow channel can be provided into the filter 102 during backwashing, resulting in a higher instantaneous flow rate and coverage area of ​​the backwash fluid upon entering the filter 102, thereby enhancing the flushing effect on the liquid-facing surface of the filter screen. A smaller outlet width helps to increase the flow velocity and impact force of the backwash fluid inside the filter 102, causing impurities adhering to the filter screen surface to be quickly detached and discharged with the flow, thus improving backwashing efficiency without increasing additional energy consumption.

[0036] As an optional implementation, it also includes a positioning guide rod 109: the positioning guide rod 109 is used to control the first shut-off valve 105, the third shut-off valve 106 and the fourth shut-off valve 107.

[0037] The positioning guide rod 109 can electrically control the first shut-off valve 105, the third shut-off valve 106, and the fourth shut-off valve 107. When it is necessary to switch from the normal water inlet state to the backwash state, the positioning guide rod 109 needs to be pressed. When the positioning guide rod 109 is pressed, the first shut-off valve 105 opens, and the second shut-off valve 108 and the third shut-off valve 106 close, thus establishing a backwash passage. When it is necessary to return to the normal filtration state, the positioning guide rod 109 is pressed again. The first shut-off valve 105 closes, and the second shut-off valve 108 and the third shut-off valve 106 open, thus closing the backwash passage and opening the normal filtration passage.

[0038] As an alternative implementation, the positioning guide rod 109 can be electrically controlled with each shut-off valve (solenoid valve).

[0039] As an optional implementation, a check valve is provided at the outlet end of the backflushing pipe 103.

[0040] The check valve is used to prevent liquid from flowing back from the outlet side of the filter 102 into the backwash pipe 103 in the non-backwash state, thereby avoiding the formation of a bypass flow path in the backwash channel under normal filtration conditions and ensuring that the liquid flows strictly according to the filtration process.

[0041] The check valve can be a one-way resilient plate valve, a rotary check valve, or a diaphragm structure. It has a simple structure and a rapid response, and is usually installed at the outlet end of the backwash pipe 103. When in normal filtration mode, the fluid pressure on the outlet side is higher than the pressure inside the backwash pipe 103, and the check valve automatically closes to prevent liquid backflow. When entering the backwash cleaning mode, after the first shut-off valve 105 opens and the third and fourth shut-off valves close, the backwash channel is open, and the liquid enters the backwash pipe 103 in reverse and pushes the check valve to open, forming a reverse jet to flush the filter 102.

[0042] As an optional implementation, the liquid storage module 2 includes a liquid level detection probe 201; the drainage module 3 includes a solenoid valve, and the liquid level detection probe 201 can be electrically connected to the solenoid valve.

[0043] By installing a liquid level detection probe 201 on the outer wall or inside the cavity of the liquid storage module 2, the height change of the liquid level in the cavity can be monitored in real time. When the liquid level reaches the set high threshold, the liquid level detection probe 201 outputs a control signal to drive the solenoid valve to open, so that the liquid in the cavity is automatically discharged to the waste liquid container through the drainage pipe 301; when the liquid level drops to the low threshold, the probe outputs a control signal to close the solenoid valve, thereby realizing automated drainage control and avoiding frequent manual operation.

[0044] As an optional implementation, the liquid storage module 2 includes three liquid level detection probes 201; the three liquid level detection probes 201 are set at different heights and are used to transmit different signals according to different liquid level heights.

[0045] The liquid level detection probe 201 is an ultrasonic probe, integrating transmission and reception. Three probes are used to control the corresponding drainage module 3 at different liquid levels. The ultrasonic probe is an LLDM with a resolution of ±0.5 mm, responsible for real-time monitoring of the liquid level change in the self-testing liquid level pulse chamber. This serves as the criterion for automatically determining whether to open the drainage solenoid valve, controlling the power supply and de-energizing of the drainage module 3 to prevent malfunctions or excessive discharge leading to gas loss. Sensing method: Non-contact ultrasonic time-difference + dual redundancy of water level height ultrasonic probe.

[0046] As an optional implementation, the highest level detection probe 201 is connected to the alarm; the middle level detection probe 201 and the lowest level detection probe 201 are both electrically connected to the solenoid valve.

[0047] During normal operation, condensate or waste liquid can flow into the liquid storage module 2. The inlet of the drain pipe 301 is below the liquid level. Three ultrasonic probes are placed according to the liquid level. When the liquid level reaches the highest probe, the alarm is triggered and a fault signal is issued. When it is higher than the middle probe, the power supply to the solenoid valve of the drain module 3 is triggered, and the whole system begins to drain. When the water level is lower than the low probe, the power supply to the solenoid valve of the drain module 3 is turned off. The drain pipe is always below the liquid level, which will not cause gas to be discharged from the cavity.

[0048] As an optional implementation, the liquid storage module 2 includes a vertically arranged support column, and the liquid level detection probe 201 is movably connected to the support column.

[0049] The liquid storage module 2 includes a vertically arranged support column, to which the liquid level detection probe 201 is movably connected. The support column is located on the inner or outer wall of the liquid storage cavity and serves as a guide structure for the installation of the liquid level detection probe 201. The liquid level detection probe 201 can move up and down along the support column via a sliding seat, sliding groove buckle, or adjustable clamp, and can be positioned and fixed at a target height, thereby achieving flexible adjustment of the probe's installation height.

[0050] As an alternative implementation, the backflush tube 103 is a bellows.

[0051] Corrugated pipes have a flexible structure, consisting of multiple annular or spiral corrugations. They can achieve a certain degree of axial, radial, or angular bending deformation while ensuring unobstructed fluid flow. They are suitable for installation environments with limited space or relative displacement.

[0052] The above technical solution has the following beneficial effects: through modular coupling design, automatic discharge of condensate and gas loss is achieved; the filter screen can be cleaned by backflushing to avoid clogging, improve service life and purification effect; and the drainage module effectively drains the liquid storage module to avoid exhaust gas emission.

[0053] The above-described specific embodiments of the utility model further illustrate the purpose, technical solution, and beneficial effects of the utility model. It should be understood that the above content is only a specific embodiment of the utility model and is not intended to limit the scope of protection of the utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the utility model should be included within the scope of protection of the utility model.

Claims

1. An automatic drain device, characterized by, include: The water inlet module includes a water inlet pipe with a filter installed in it; the water inlet module also includes a backflushing structure for cleaning the filter. A liquid storage module, the liquid storage module including a cavity, the inlet end of the water inlet pipe is used to connect to the liquid discharge equipment, and the outlet end is connected to the cavity; The drainage module is equipped with a drainage pipe, the inlet end of which is located near the bottom of the cavity, and the outlet end is connected to the collection container. The recoil structure includes: A backflush pipe, both ends of which are connected to the inlet pipe and are located on both sides of the filter, and the backflush pipe is equipped with a first shut-off valve; A sewage discharge pipe, the inlet end of which is connected to the water inlet pipe, and the outlet end of which is connected to the sewage discharge container, the inlet end of which is located on the water inlet side of the filter; the sewage discharge pipe is equipped with a second shut-off valve; The inlet pipe includes a third shut-off valve and a fourth shut-off valve. The third shut-off valve is located between the inlet end of the backwash pipe and the filter, and the fourth shut-off valve is located on the outlet side of the backwash pipe. The inlet side is the inlet side of the conventional filtration process, and the outlet side is the outlet side of the conventional filtration process.

2. The automatic drainage device according to claim 1, characterized in that: The width of the inlet end of the backflush tube is greater than the width of the outlet end.

3. The automatic drainage device according to claim 1, characterized in that, It also includes a positioning guide rod: The positioning guide rod is used to control the first shut-off valve, the third shut-off valve, and the fourth shut-off valve.

4. The automatic drainage device according to claim 1, characterized in that: The outlet end of the backflush pipe is equipped with a check valve.

5. The automatic drainage device according to claim 1, characterized in that: The liquid storage module includes a liquid level detection probe; The drainage module includes a solenoid valve, and the liquid level detection probe can be electrically connected to the solenoid valve.

6. The automatic drainage device according to claim 5, characterized in that: The liquid storage module includes three liquid level detection probes; The three liquid level detection probes are positioned at different heights to transmit different signals based on different liquid level heights.

7. The automatic drainage device according to claim 6, characterized in that: The highest level liquid level detection probe is connected to the alarm. Both the middle-position liquid level detection probe and the low-position liquid level detection probe are electrically connected to the solenoid valve.

8. The automatic drainage device according to claim 5, characterized in that: The liquid storage module includes a vertically arranged support column, and the liquid level detection probe is movably connected to the support column.

9. The automatic drainage device according to claim 1, characterized in that: The recoil pipe is a corrugated pipe.

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