WO2022162679A1 - A vacuum system and method thereof - Google Patents

A vacuum system and method thereof Download PDF

Info

Publication number
WO2022162679A1
WO2022162679A1 PCT/IN2021/050298 IN2021050298W WO2022162679A1 WO 2022162679 A1 WO2022162679 A1 WO 2022162679A1 IN 2021050298 W IN2021050298 W IN 2021050298W WO 2022162679 A1 WO2022162679 A1 WO 2022162679A1
Authority
WO
WIPO (PCT)
Prior art keywords
liquid
process chamber
vacuum
compartment
atleast
Prior art date
Application number
PCT/IN2021/050298
Other languages
French (fr)
Inventor
Dr. Surinder Kumar SHARMA
Original Assignee
Sharma Dr Surinder Kumar
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sharma Dr Surinder Kumar filed Critical Sharma Dr Surinder Kumar
Priority to DE212021000543.8U priority Critical patent/DE212021000543U1/en
Publication of WO2022162679A1 publication Critical patent/WO2022162679A1/en

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • F04B37/10Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use
    • F04B37/14Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00 for special use to obtain high vacuum
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B37/00Pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B25/00 - F04B35/00
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04FPUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F3/00Pumps using negative pressure acting directly on the liquid to be pumped

Definitions

  • the present invention relates to a system to generate vacuum in a compartment/s of any size. It particularly relates to a device which involves the discharge of fluid from a closed enclosure to create vacuum eliminating the use of energy intensive vacuum pumps to create vacuum.
  • Vacuum technology involves the processes carried out in condition where pressure is less than atmospheric pressure. Vacuum is generally created because of the following reasons: (1) to remove the unwanted atmospheric constituents (2) to accelerate the rate of process (3) to increase the distance between source and target in vacuum coating and particular accelerator etc. (4) to reduce the chances of contamination(5) creating inert conditions (6) to de-accelerate a process (7) to accelerate a Process.
  • vacuum pumps are most commonly used to create vacuum in a variety of experimental setups.
  • the working of a vacuum pump involves the elimination of the air from the closed system through suction to gradually reduce the density of air in the restricted space so that vacuum can be created. It removes the air in a closed system because of the mechanical effort energy of a revolving shaft which is changed to pneumatic power.
  • the vacuum pumps have following limitations.
  • the pump suction pressure can be limited with the vapor of the fluid within the pump
  • Each type of vacuum pump works under its own process conditions with a specific operating range and exhibits its own set of limitations. Different mix of pumps and technologies are required to create different vacuum levels. With the decrease in pressure of the chamber, it becomes exponentially difficult to remove the addition molecules from the working space. Therefore, an industrial vacuum system is required to produce the large pressure range such as 1-10' 6 torr. Sometimes, in order to achieve more reduction in pressure which is extended to 10' 9 torr, a series of industrial vacuum pumps are required. Moreover to achieve complete vacuum in a large area for instance a room, laboratory with vacuum pumps is very difficult and can pose chemical, mechanical, electrical, and fire hazards. Engineering Controlled vacuum pumps used to evacuate systems containing toxic, reactive, volatile, or corrosive substances must be vented to the building exhaust ventilation system. Various precautions should be observed when using vacuum pumps.
  • US 8540688B2 describes a portable device to generate a vacuum for the medical treatment of wounds on the bodies of humans or animals.
  • US 103591311B2 describes a collapsible hose control system that can alternately supply a pressurized fluid to extend a collapsible hose for use, or supply a vacuum pressure to retract or collapse the collapsible hose longitudinally for storage.
  • the present invention provides a system and method to reduce the pressure of restricted area (of any dimension) without the aid of vacuum pumps.
  • the said system and method is more energy efficient, cost effective and environment friendly.
  • the said system is unique in terms of its simplicity, expandability, multiple utility etc.
  • the present invention describe a system to create vacuum for different applications such as environmental control chambers, where the atmospheric conditions corresponding to different elevations can be simulated for acclimatisation purposes.
  • This set up can be used to create vacuum, more efficiently, in extremely large spaces for applications in diverse areas such as ground applications at space establishments, semiconductor industry, Hyperloop, Exhaust of gases with explosion risks, Removal of gases in shale fracking systems, gas and oil recovery from depleted wells , Removal of explosive gases from mines, Indoor air quality applications, water purification, industrial furnaces, aviation hypobaric training, pharmaceutical walk-in rooms, storage godowns of chemicals and high altitude acclimatised huts, effective use of waste and low temperature heat in chemical industry, agriculture and horticulture operations, drying applications, Noise and vibration reduction in vacuum systems, reducing carbon footprint of the system so as to promote sustainability etc.
  • Figure 1 illustrates the system to generate vacuum
  • Figure 2 illustrates the system to generate vacuum
  • Figure 3 illustrates the step-1 of method of working condition of the system to generate vacuum.
  • Figure 4 illustrates the step-2 method of working condition of the system to generate vacuum.
  • Figure 5 illustrates the step-3 method of working condition of the system to generate vacuum.
  • Figure 6 is another illustrates of the system.
  • vacuum when used in this specification is taken to specify to reduce the pressure of restricted area below the ambient pressure for multiple uses
  • operating ambient conditions is taken to specify such as temperature between freezing and boiling point of liquid at working atmospheric pressures.
  • valve when used in this specification is taken to specify a device that regulates, controls, or directs the flow of a fluid by opening, closing, or partially/completely obstructing fluid flow.
  • process chamber when used in this specification is taken to specify the vessel for the filling of liquid and thereafter creating the vacuum.
  • liquids refers to a fluid that conforms to the shape of its container.
  • the system comprising at least a liquid reservoir, a pump, a process chamber and a compartment.
  • the system further comprising pipes to carry the liquid within the system and multiple valves to control the flow of liquids.
  • the system further comprising a safety valve to avoid any explosion/implosion in the system, in a situation when the pressure/vacuum is increased from the optimum level.
  • the height of the process chamber will depend on the atmospheric pressure at the site.
  • Process chamber is further connected to the bottom reservoir with a liquid carrying source such as pipe, a drain pipe, a vent and with the vacuum line connected to the restricted area in which vacuum is to be created.
  • vapour trap can also be located in the vacuum line.
  • the flow of liquid is controlled by the use of multiple valves which are located at the length of the liquid carrying source. Valves are provided on the vacuum line, vent at the top of the process chamber, liquid inlet and outlet sources of the process chamber. Liquid pump can be automatically actuated through a pressure/conductivity sensor. All the valves and pump can be connected to the automatic Control system.
  • the system (100) comprising atleast a liquid reservoir (102), a pump (104), a process chamber (106) and a compartment (108).
  • the system (100) further comprises the liquid carrying source (120) to carry the liquid within the system (100) and multiple valves to control the flow of liquids.
  • the process chamber (106) is situated at an elevation of 35 feet or more from the liquid storage reservoir when water is used as liquid (102). The height of the process chamber (106) will depend on the atmospheric pressure at the working site and the density of the liquid used.
  • Process chamber (106) is further connected to the bottom reservoir (102) with a liquid carrying source (124), a drain outlet (122), a vent and with the vacuum line (126) connected to the compartment (108) in which vacuum is to be created for end use application.
  • the flow of liquid is controlled by the use of multiple valves (110,112,114,116,118) which are located at the length of the liquid carrying sources.
  • Valves are provided on the vacuum line (110), vent at the top of the process chamber (112), liquid outlet (114, 118) and inlet sources (116) of the process chamber (106). Vacuum gauges/sensors are placed on the process chamber and the compartment to measure vacuum.
  • Liquid pump can be automatically actuated through a sensor.
  • liquid reservoir (102) can be of any shape such as rectangle, square, trapezoid, tapered, circular etc. or combination thereof.
  • liquid reservoir (102) can be of sufficient size to reserve the liquid for the proper functioning of the system.
  • liquid reservoir (102) can be made of any material such as metal, sand, concrete, cement, polymer or combination thereof. [41] In an embodiment the liquid reservoir (102) surfaces can be coated with the protected material to increase the shelf life of liquid reservoir (102) and control any seepage.
  • a pump (104) is used to lift the liquid from the liquid reservoir (102) to the process chamber (106).
  • more than one pump can be used to lift the liquid from the liquid reservoir (102) to the process chamber (106).
  • the pump (104) can be of positive-displacement, centrifugal, axial-flow pumps or combination thereof or submersible pump.
  • the pump (104) is centrifugal pump/s.
  • the process chamber (106) can be of any shape such as tubular, cylindrical, rectangular shape or combination thereof.
  • the process chamber (106) is of cylindrical shape.
  • the process chamber (106) is of any sufficient size to store the liquid for the proper functioning of the system.
  • the process chamber (106) can be made of any material such as natural, artificial or combination thereof.
  • the process chamber (106) can be made of any material such as metal, sand, concrete, cement, polymer or combination thereof.
  • the process chamber (106) surface can be coated with the protected material to increase the shelf life of process chamber, reduce seepage and infiltration of atmospheric air (106).
  • the process chamber (106) is situated at a height ‘Hl ’ from the liquid storage reservoir (102), which is supported by suitable metal/concrete structure.
  • the process chamber is situated at an elevation, equal or more than 35 feet from the liquid storage reservoir when liquid is water;
  • the compartment (108) can be of any shape and size.
  • the compartment (108) can be made of any material such as natural, synthetic, semi- synthetic or combination thereof.
  • the compartment (108) can be of any area with the boundaries.
  • the compartment (108) can be empty or having atleast one object.
  • the compartment (108) can be extremely large dimensional areas such as space establishments, semiconductor industry, hyperloop, water purification, industrial furnaces, effective use of waste and low temperature heat in chemical industry, agriculture and horticulture operations, drying applications, aviation hypobaric training, pharmaceutical walk-in rooms, storage area of chemicals and high altitude acclimatised huts, Exhaust of gases with explosion risks, Removal of gases in shale fracking systems, gas and oil recovery from depleted wells , Removal of explosive gases from mines, Indoor air quality applications, Noise and vibration reduction in vacuum systems, reducing carbon footprint of the system so as to promote sustainability, etc. but not limited to these only.
  • the system (100) comprising the liquid carrying source (120) for the circulation of the liquid in the system.
  • liquid carrying source (120) is linked with the pump (104) and the process chamber (106), to carry the liquid from the liquid reservoir (102) in to the process chamber (106).
  • liquid carrying sources (122 and 124) are linked with the process chamber (106), to drain the extra liquid and to drain liquid in to the liquid reservoir (102) respectively to from the process chamber (106).
  • the outlet ends of liquid carrying sources (120) and (124) should be lower than the water level in the reservoir 102.
  • the vacuum line (126) is linked with the process chamber (106) and the compartment (108). It is used to extract the air and/or particles and vapours from the compartment (108) in the process chamber (106) to create the vacuum in Chamber 108.
  • liquid carrying sources can be of any shape and size which serves the purpose of invention.
  • liquid carrying sources and vacuum line are of elongated, tube like structure with or without bends.
  • liquid carrying sources are pipes.
  • liquid carrying sources and vacuum line can be made of any material such as natural, synthetic, semi- synthetic or combination thereof.
  • the system (100) comprising the multiple valves to control the circulation of the liquid in the system.
  • valve (110) is located anywhere in the fluid/liquid carrying source (126), to control the rate of vacuum induced in the compartment (108).
  • valve (112) is located anywhere in the liquid carrying source (122), to control the vent of liquid from the process chamber (106).
  • valve (114) is located anywhere in the liquid carrying source (124), to control the drain of liquid from the process chamber (106).
  • valve (116) is located anywhere in the liquid carrying source (120), to control the lifting of liquid from the liquid reservoir (102) into the process chamber (106).
  • valve (118) is located anywhere in the liquid carrying source (124), to control the vent of vapours from liquid carrying source (124) and also of liquid from the process chamber (106).
  • valves can be of any type such as Ball, Butterfly, Check, Diaphragm, Gate, Globe, Knife Gate, Parallel Slide, Pinch, Piston, Plug, Sluice, etc. but not limited to these only.
  • valves can be manual, automatic or semi- automatically operated.
  • all the valves can be different in terms of their functionality, material and control.
  • two valves can be the same in terms of their functionality, material and Control.
  • valves are solenoid valves.
  • valve 112 is a three way valve.
  • a vapour trap (202) can also be located in the vacuum line (126) for trapping of liquid, vapours and or particulate matter.
  • the liquid in the system (100) can be aqueous, non-aqueous, mixed aqueous, organic mixed organic or combination thereof and should remain in the liquid form with very low vapour pressure, in its operating range.
  • preferred embodiment could be ionic liquids.
  • liquids is any metal such as Mercury, Indium or any other metal or their alloys below their solidification sublimation points.
  • the liquid has soluble solutes or suspensions.
  • solutes have solubility in the range of up to saturation point in working conditions or even slurries.
  • the liquid has additives to reduce their evaporation
  • the liquid has surfactants and anti-fungal material and mixtures there off to prevent fouling and facilitate cleaning of reservoir and the chambers
  • the Liquid has anti corrode agents to protect the walls of the chambers, pipelines, valves, measuring Instruments and other components. Sacrificial anode will be provided to eliminate galvanic cell corrosion problems.
  • liquid is water
  • the system (100) comprising a device to detect the vacuum level in process chamber (106) and vacuum chamber (108).
  • Step-1 Referring to the figures, and more particularly to Figure 3 provided in the system (100).
  • the valves 112,(122) 116andl l8 are opened and rest of the valves are closed.
  • the pump (104) starts lifting of the liquid from the liquid reservoir (102) into the process chamber (106) through the liquid carrying source (120). After the process chamber (106) is completely filled the pump (104) will be stopped, and Vent (112) at the top of the process chamber (106) and valves (116) and (122) will be closed.
  • Step-2 Referring to the figures, and more particularly to Figure 4 providing in the system (100). Then, the valves (114, 118) in the liquid carrying source (124) are opened and the liquid in the process chamber 106 will be allowed to drain in to the liquid reservoir (102). After all the liquid has drained and full vacuum is created in the overhead Chamber, valves (118) and (114)in the outlet pipe are closed.
  • Step-3 Referring to the figures, and more particularly to Figure 5 providing in the system (100). Then the valve (110) is opened in order to create the vacuum in the compartment (108). After that Valve (110) is closed. [96] Depending upon the vacuum requirements and the volume of the end use applications, this process is operated a number of times by using the same liquid in the bottom reservoir. As a result, this process can be used for creating vacuum in any size of the compartment.
  • the present invention describe a system to create vacuum for different applications such as environmental control chambers, where the atmospheric conditions corresponding to different elevations can be simulated for acclimatisation purposes.
  • This set up can be used to create vacuum, more efficiently, in extremely large spaces for applications in diverse areas such as ground applications at space establishments, semiconductor industry, Hyperloop, water purification, industrial furnaces, effective use of waste and low temperature heat in chemical industry, agriculture and horticulture operations, drying applications, aviation hypobaric training, pharmaceutical walk-in rooms, storage godowns of chemicals and high altitude acclimatised huts, , Exhaust of gases with explosion risks, Removal of gases in shale fracking systems, gas and oil recovery from depleted wells , Removal of explosive gases from mines, Indoor air quality applications, Noise and vibration reduction in vacuum systems, reducing carbon footprint of the system so as to promote sustainability, etc.
  • Vacuum can be created by this setup in any size and shape of the vessel at least up to 100,000 cubic ft iii. Simulated altitude in environmental chamber from sea level to atleast 14000 meters iv. Temperature range in application chamber from -80°C in cold applications to 800°C in vacuum furnaces. v. Material of overhead process chamber: stainless steel, aluminium, steel, brass, acrylic, hard steel. vi. It will have braces inside/ outside for structural stability vii. Supporting structure for overhead process chamber can be metal/ concrete. viii. Theoretical, perfect vacuum can be created. Atleast, vacuum can be created at sea level nearly equivalent to 9.3Kpa absolute. Extent of vacuum created will depend upon the configuration of the system and the type of working fluid used.

Abstract

The present invention relates to an energy efficient, environment friendly, safe and cost effective system for vacuum generation in compartments of all sizes. The technology used in this system optimizes the efficiency of vacuum generation without significant power consumption. The carbon footprint of this system is low as compared to vacuum pump technology. The present invention eliminates the usage of a vacuum pump which generates substantial heat and is energy intensive to create hypobaric conditions in large chambers. The vacuum system comprising atleast a liquid reservoir, a pump, a process chamber, a compartment, liquid carrying sources and atleast two valves.

Description

TITLE OF THE INVENTION
A VACUUM SYSTEM AND METHOD THEREOF
TECHNICAL FIELD
[1] The present invention relates to a system to generate vacuum in a compartment/s of any size. It particularly relates to a device which involves the discharge of fluid from a closed enclosure to create vacuum eliminating the use of energy intensive vacuum pumps to create vacuum.
BACKGROUND ART
[2] Vacuum technology involves the processes carried out in condition where pressure is less than atmospheric pressure. Vacuum is generally created because of the following reasons: (1) to remove the unwanted atmospheric constituents (2) to accelerate the rate of process (3) to increase the distance between source and target in vacuum coating and particular accelerator etc. (4) to reduce the chances of contamination(5) creating inert conditions (6) to de-accelerate a process (7) to accelerate a Process.
[3] Firstly, the foremost use of vacuum technology was addressed for the manufacturing of electric light bulbs and thereafter in electron tubes. Moreover, literature supports that certain preparation processes can be carried out only under vacuum conditions such as blood plasma, titanium and nuclear energy etc.
[4] Various devices have been developed for producing, maintaining, and measuring of vacuum. Among all of them, vacuum pumps are most commonly used to create vacuum in a variety of experimental setups. The working of a vacuum pump involves the elimination of the air from the closed system through suction to gradually reduce the density of air in the restricted space so that vacuum can be created. It removes the air in a closed system because of the mechanical effort energy of a revolving shaft which is changed to pneumatic power. However, the vacuum pumps have following limitations.
• These pumps may be injured by fluid slugs. • The fluid within the pump & the process gas should be well-suited to avoid pollution.
• The pump suction pressure can be limited with the vapor of the fluid within the pump
• Due to the sealant fluid vapor pressure, the obtainable vacuum can be limited at the operating temperature and pollute the vacuum space.
• Operation and maintenance cost of Vacuum pumps is very high.
• Mechanical hazards due to moving parts and chemical hazards due to contamination of pump oil with volatile substances
• Risk of explosion in vacuum pump exhaust system
[5] Each type of vacuum pump works under its own process conditions with a specific operating range and exhibits its own set of limitations. Different mix of pumps and technologies are required to create different vacuum levels. With the decrease in pressure of the chamber, it becomes exponentially difficult to remove the addition molecules from the working space. Therefore, an industrial vacuum system is required to produce the large pressure range such as 1-10'6 torr. Sometimes, in order to achieve more reduction in pressure which is extended to 10'9torr, a series of industrial vacuum pumps are required. Moreover to achieve complete vacuum in a large area for instance a room, laboratory with vacuum pumps is very difficult and can pose chemical, mechanical, electrical, and fire hazards. Engineering Controlled vacuum pumps used to evacuate systems containing toxic, reactive, volatile, or corrosive substances must be vented to the building exhaust ventilation system. Various precautions should be observed when using vacuum pumps.
[6] US 8540688B2 describes a portable device to generate a vacuum for the medical treatment of wounds on the bodies of humans or animals. [7] US 103591311B2 describes a collapsible hose control system that can alternately supply a pressurized fluid to extend a collapsible hose for use, or supply a vacuum pressure to retract or collapse the collapsible hose longitudinally for storage.
[8] Low pressure is the essential requirement for the carrying out of various chemical and physical processes. Low pressure is required for multiple domains of science and technology. But till date vacuum pump is the only available source to create vacuum which has above mentioned limitations.
[9] Therefore in order to overcome the problems encountered in present day systems require a complete elimination of vacuum pumps. The present invention provides a system and method to reduce the pressure of restricted area (of any dimension) without the aid of vacuum pumps. The said system and method is more energy efficient, cost effective and environment friendly. The said system is unique in terms of its simplicity, expandability, multiple utility etc.
[10] The present invention describe a system to create vacuum for different applications such as environmental control chambers, where the atmospheric conditions corresponding to different elevations can be simulated for acclimatisation purposes. This set up can be used to create vacuum, more efficiently, in extremely large spaces for applications in diverse areas such as ground applications at space establishments, semiconductor industry, Hyperloop, Exhaust of gases with explosion risks, Removal of gases in shale fracking systems, gas and oil recovery from depleted wells , Removal of explosive gases from mines, Indoor air quality applications, water purification, industrial furnaces, aviation hypobaric training, pharmaceutical walk-in rooms, storage godowns of chemicals and high altitude acclimatised huts, effective use of waste and low temperature heat in chemical industry, agriculture and horticulture operations, drying applications, Noise and vibration reduction in vacuum systems, reducing carbon footprint of the system so as to promote sustainability etc.
BRIEF DESCRIPTION OF THE DRAWINGS [11] The present invention will become more understandable from the description given herein and the accompanying drawings below. These are given by way of illustration only and therefore not limited to present invention and wherein:
[12] Figure 1 illustrates the system to generate vacuum
[13] Figure 2 illustrates the system to generate vacuum
[14] Figure 3illustrates the step-1 of method of working condition of the system to generate vacuum.
[15] Figure 4 illustrates the step-2 method of working condition of the system to generate vacuum.
[16] Figure 5 illustrates the step-3 method of working condition of the system to generate vacuum.
[17] Figure 6 is another illustrates of the system.
BEST MODE(S) FOR CARRYING OUT THE INVENTION
The following presents a simplified description of the invention in order to provide a basic understanding of some aspects of the invention. This description is not an extensive overview of the present invention. It is not intended to identify the key/critical elements of the invention or to delineate the scope of the invention. Its sole purpose is to present some concept of the invention in a simplified form.
[18] Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope of the invention. In addition, descriptions of well-known functions and constructions are omitted for clarity and conciseness.
[19] Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments and/or in combination with or instead of the features of the other embodiments. [20] The terms and words used in the following description and claims are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of exemplary embodiments of the present invention are provided for illustration purpose only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.
[21] It is to be understood that the singular forms “a,” “an,” and “the” include plural referents unless the context clearly dictates otherwise.
[22] By the term “substantially” it is meant that the recited characteristic, parameter, or value need not be achieved exactly, but that deviations or variations, including for example, tolerances, measurement error, measurement accuracy limitations and other factors known to those of skill in the art, may occur in amounts that do not preclude the effect the characteristic was intended to provide.
[23] It should be emphasized that the term “comprises/comprising” when used in this specification is taken to specify the presence of stated features, integers, steps or components but does not preclude the presence or addition of one or more other features, integers, steps, components or groups thereof.
[24] It should be emphasized that the term “vacuum” when used in this specification is taken to specify to reduce the pressure of restricted area below the ambient pressure for multiple uses
[25] It should be emphasized that the term “ultra- high vacuum” when used in this specification is taken to specify the pressures lower than about 100 nanopascal.
[26] It should be emphasized that the term “compartment” when used in this specification is taken to specify the space where the vacuum is to be created such as environment control chambers.
[27] It should be emphasized that the term “operating ambient conditions” is taken to specify such as temperature between freezing and boiling point of liquid at working atmospheric pressures. [28] It should be emphasized that the term “valve” when used in this specification is taken to specify a device that regulates, controls, or directs the flow of a fluid by opening, closing, or partially/completely obstructing fluid flow.
[29] It should be emphasized that the term “solenoid valve” when used in this specification is taken to specify the electrically controlled valve.
[30] It should be emphasized that the term “pump” when used in this specification is taken to specify the device which is used to lift the liquid in upward side against the gravitational force.
[31] It should be emphasized that the term “process chamber” when used in this specification is taken to specify the vessel for the filling of liquid and thereafter creating the vacuum.
[32] It should be emphasized that the term “restricted area” when used in this specification is taken to specify the area with boundaries.
[33] It should be emphasized that the term “liquids” refers to a fluid that conforms to the shape of its container.
[34] Disclosing a system to reduce the pressure of restricted area below the ambient pressure for multiple uses. The system comprising at least a liquid reservoir, a pump, a process chamber and a compartment. The system further comprising pipes to carry the liquid within the system and multiple valves to control the flow of liquids. The system further comprising a safety valve to avoid any explosion/implosion in the system, in a situation when the pressure/vacuum is increased from the optimum level. In the process chamber the height of the process chamber will depend on the atmospheric pressure at the site. Process chamber is further connected to the bottom reservoir with a liquid carrying source such as pipe, a drain pipe, a vent and with the vacuum line connected to the restricted area in which vacuum is to be created. In the system a vapour trap can also be located in the vacuum line. In the system the flow of liquid is controlled by the use of multiple valves which are located at the length of the liquid carrying source. Valves are provided on the vacuum line, vent at the top of the process chamber, liquid inlet and outlet sources of the process chamber. Liquid pump can be automatically actuated through a pressure/conductivity sensor. All the valves and pump can be connected to the automatic Control system.
Embodiments
[35] Referring to the figures, and more particularly to Figure 1 providing, the system (100) comprising atleast a liquid reservoir (102), a pump (104), a process chamber (106) and a compartment (108). The system (100) further comprises the liquid carrying source (120) to carry the liquid within the system (100) and multiple valves to control the flow of liquids. In the system (100), the process chamber (106) is situated at an elevation of 35 feet or more from the liquid storage reservoir when water is used as liquid (102). The height of the process chamber (106) will depend on the atmospheric pressure at the working site and the density of the liquid used. Process chamber (106) is further connected to the bottom reservoir (102) with a liquid carrying source (124), a drain outlet (122), a vent and with the vacuum line (126) connected to the compartment (108) in which vacuum is to be created for end use application. In the system the flow of liquid is controlled by the use of multiple valves (110,112,114,116,118) which are located at the length of the liquid carrying sources. Valves are provided on the vacuum line (110), vent at the top of the process chamber (112), liquid outlet (114, 118) and inlet sources (116) of the process chamber (106). Vacuum gauges/sensors are placed on the process chamber and the compartment to measure vacuum.
[36] In an embodiment in the system (100) Liquid pump can be automatically actuated through a sensor.
[37] In an embodiment the system (100), all the valves and pump can be further connected to the automatic Control system.
[38] In an embodiment the liquid reservoir (102) can be of any shape such as rectangle, square, trapezoid, tapered, circular etc. or combination thereof.
[39] In an embodiment the liquid reservoir (102) can be of sufficient size to reserve the liquid for the proper functioning of the system.
[40] In an embodiment the liquid reservoir (102) can be made of any material such as metal, sand, concrete, cement, polymer or combination thereof. [41] In an embodiment the liquid reservoir (102) surfaces can be coated with the protected material to increase the shelf life of liquid reservoir (102) and control any seepage.
[42] In the system 100,atleast a pump (104) is used to lift the liquid from the liquid reservoir (102) to the process chamber (106).
[43] In an embodiment more than one pump can be used to lift the liquid from the liquid reservoir (102) to the process chamber (106).
[44] In an embodiment the pump (104) can be of positive-displacement, centrifugal, axial-flow pumps or combination thereof or submersible pump.
[45] In a preferred embodiment the pump (104) is centrifugal pump/s.
[46] In the system, the work efficiency of pump is such that it can serve the purpose of invention.
[47] In the system the liquid is pumped from the liquid reservoir (102) and filled in the process chamber (106).
[48] In an embodiment the process chamber (106) can be of any shape such as tubular, cylindrical, rectangular shape or combination thereof.
[49] In a preferred embodiment the process chamber (106) is of cylindrical shape.
[50] In an embodiment the process chamber (106) is of any sufficient size to store the liquid for the proper functioning of the system.
[51] In an embodiment the process chamber (106) can be made of any material such as natural, artificial or combination thereof.
[52] In an embodiment the process chamber (106) can be made of any material such as metal, sand, concrete, cement, polymer or combination thereof.
[53] In an embodiment the process chamber (106) surface can be coated with the protected material to increase the shelf life of process chamber, reduce seepage and infiltration of atmospheric air (106).
[54] In the system (100), the process chamber (106) is situated at a height ‘Hl ’ from the liquid storage reservoir (102), which is supported by suitable metal/concrete structure. [55] In a preferred embodiment, the process chamber is situated at an elevation, equal or more than 35 feet from the liquid storage reservoir when liquid is water;
[56] In the system (100) there is atleast a compartment (108) in which vacuum is to be created.
[57] In embodiments, the compartment (108) can be of any shape and size.
[58] In embodiments, the compartment (108) can be made of any material such as natural, synthetic, semi- synthetic or combination thereof.
[59] In embodiments the compartment (108) can be of any area with the boundaries.
[60] In embodiments the compartment (108) can be empty or having atleast one object.
[61] In embodiments the compartment (108) can be extremely large dimensional areas such as space establishments, semiconductor industry, hyperloop, water purification, industrial furnaces, effective use of waste and low temperature heat in chemical industry, agriculture and horticulture operations, drying applications, aviation hypobaric training, pharmaceutical walk-in rooms, storage area of chemicals and high altitude acclimatised huts, Exhaust of gases with explosion risks, Removal of gases in shale fracking systems, gas and oil recovery from depleted wells , Removal of explosive gases from mines, Indoor air quality applications, Noise and vibration reduction in vacuum systems, reducing carbon footprint of the system so as to promote sustainability, etc. but not limited to these only.
[62] The system (100) comprising the multiple liquid carrying sources for the circulation of the liquid in the system.
[63] The system (100) comprising the liquid carrying source (120) for the circulation of the liquid in the system.
[64] In an embodiment the liquid carrying source (120) is linked with the pump (104) and the process chamber (106), to carry the liquid from the liquid reservoir (102) in to the process chamber (106). [65] In an embodiment the liquid carrying sources (122 and 124) are linked with the process chamber (106), to drain the extra liquid and to drain liquid in to the liquid reservoir (102) respectively to from the process chamber (106). The outlet ends of liquid carrying sources (120) and (124) should be lower than the water level in the reservoir 102.
[66] In an embodiment the vacuum line (126) is linked with the process chamber (106) and the compartment (108). It is used to extract the air and/or particles and vapours from the compartment (108) in the process chamber (106) to create the vacuum in Chamber 108.
[67] In embodiments the liquid carrying sources can be of any shape and size which serves the purpose of invention.
[68] In preferred embodiments the liquid carrying sources and vacuum line are of elongated, tube like structure with or without bends.
[69] In preferred embodiments the liquid carrying sources are pipes.
[70] In embodiments the liquid carrying sources and vacuum line can be made of any material such as natural, synthetic, semi- synthetic or combination thereof.
[71] The system (100) comprising the multiple valves to control the circulation of the liquid in the system.
[72] In the system (100) the valve (110) is located anywhere in the fluid/liquid carrying source (126), to control the rate of vacuum induced in the compartment (108).
[73] In the system (100) the valve (112) is located anywhere in the liquid carrying source (122), to control the vent of liquid from the process chamber (106).
[74] In the system (100) the valve (114) is located anywhere in the liquid carrying source (124), to control the drain of liquid from the process chamber (106).
[75] In the system (100) the valve (116) is located anywhere in the liquid carrying source (120), to control the lifting of liquid from the liquid reservoir (102) into the process chamber (106). [76] In the system (100) the valve (118) is located anywhere in the liquid carrying source (124), to control the vent of vapours from liquid carrying source (124) and also of liquid from the process chamber (106).
[77] In an embodiment the valves can be of any type such as Ball, Butterfly, Check, Diaphragm, Gate, Globe, Knife Gate, Parallel Slide, Pinch, Piston, Plug, Sluice, etc. but not limited to these only.
[78] In an embodiment the valves can be manual, automatic or semi- automatically operated.
[79] In an embodiment in the system, all the valves can be different in terms of their functionality, material and control.
[80] In an embodiment in the system atleast two valves can be the same in terms of their functionality, material and Control.
[81] In a preferred embodiment in the system all valves are solenoid valves.
[82] In a preferred embodiment in the system valve 112 is a three way valve.
[83] In a preferred embodiment in the system all the solenoid valves are operated through an automatic programmable controller.
[84] Referring to the figures and more particularly to Figure 2 providing in the system (100) a vapour trap (202) can also be located in the vacuum line (126) for trapping of liquid, vapours and or particulate matter.
[85] In the system (100) the liquid can be aqueous, non-aqueous, mixed aqueous, organic mixed organic or combination thereof and should remain in the liquid form with very low vapour pressure, in its operating range. In specialised application requiring completely inert atmosphere, preferred embodiment could be ionic liquids.
[86] In an embodiment the liquids is any metal such as Mercury, Indium or any other metal or their alloys below their solidification sublimation points.
[87] In an embodiment the liquid has soluble solutes or suspensions.
[88] In an embodiment the solutes have solubility in the range of up to saturation point in working conditions or even slurries.
[89] In an embodiment the liquid has additives to reduce their evaporation [90] In an embodiment the liquid has surfactants and anti-fungal material and mixtures there off to prevent fouling and facilitate cleaning of reservoir and the chambers
[91] In an embodiment the Liquid has anti corrode agents to protect the walls of the chambers, pipelines, valves, measuring Instruments and other components. Sacrificial anode will be provided to eliminate galvanic cell corrosion problems.
[92] In a preferred embodiment the liquid is water.
[93] The system (100) comprising a device to detect the vacuum level in process chamber (106) and vacuum chamber (108).
[94] In an embodiment in the device (100) there is a provision to store vacuum in the process chamber at the same value as attained in vacuum chamber (106) for instantaneous use subsequently.
[95] Method of Operation of the vacuum creation system
Step-1: Referring to the figures, and more particularly to Figure 3 provided in the system (100). At the start of the operation, the valves 112,(122) 116andl l8 are opened and rest of the valves are closed. The pump (104) starts lifting of the liquid from the liquid reservoir (102) into the process chamber (106) through the liquid carrying source (120). After the process chamber (106) is completely filled the pump (104) will be stopped, and Vent (112) at the top of the process chamber (106) and valves (116) and (122) will be closed.
Step-2: Referring to the figures, and more particularly to Figure 4 providing in the system (100). Then, the valves (114, 118) in the liquid carrying source (124) are opened and the liquid in the process chamber 106 will be allowed to drain in to the liquid reservoir (102). After all the liquid has drained and full vacuum is created in the overhead Chamber, valves (118) and (114)in the outlet pipe are closed.
Step-3: Referring to the figures, and more particularly to Figure 5 providing in the system (100). Then the valve (110) is opened in order to create the vacuum in the compartment (108). After that Valve (110) is closed. [96] Depending upon the vacuum requirements and the volume of the end use applications, this process is operated a number of times by using the same liquid in the bottom reservoir. As a result, this process can be used for creating vacuum in any size of the compartment.
[97] The processes described above is described as a sequence of steps, this was done solely for the sake of illustration. Accordingly, it is contemplated that some steps may be added, some steps may be omitted, the order of the steps may be re-arranged, or some steps may be performed simultaneously.
[98] In the device (100) there is a provision to store vacuum in the process chamber at the same value as attained in vacuum chamber for instantaneous use subsequently.
[99] Size of the overhead process chamber and the pump will depend on the application and the time frame work for creating vacuum. In one embodiment, a number of vacuum creating systems can be operated in series/parallel to create vacuum in a very large system so as to reduce the time required for creating vacuum.
[100] As the air from the application space will be sucked in to the vacuum creating overhead process chamber, the chances of contamination of the work space will be extremely low.
[101] There are several novelties of this concept, for example, instead of costly, energy intensive vacuum pump or combination of pumps for very low vacuum applications , a centrifugal pump, which consumes much less energy, will be used in this process, and this results in energy saving and cost saving novelties . Also the system will have lower carbon emissions as compared to existing systems which results in green technology and sustainability novelty, Less vibrations are produced in the process, as the Process Chamber(106) and and vacuum Chamber(106) can be connected through vibration damper/o verhead tank for applications like FAB. In areas without access to electricity grid, a small solar pump can be used for decentralised application. Time required to create vacuum can be reduced for large scale applications. Chemical, mechanical, electrical, and fire Hazards present in vacuum pumps canbe eliminated. Same system configuration can be used for any size and range of vacuum system resulting in cost saving novelty.
[102] Although embodiments have been described with reference to specific example embodiments, it will be evident that various modifications and changes may be made to these embodiments without departing from the broader spirit and scope of the system and method described herein. Accordingly, the specification and drawings are to be regarded in an illustrative rather than a restrictive sense.
[103] Many alterations and modifications of the present invention will no doubt become apparent to a person of ordinary skill in the art after having read the foregoing description. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. It is to be understood that the description above contains many specifications; these should not be construed as limiting the scope of the invention but as merely providing illustrations of some of the personally preferred embodiments of this invention.
INDUSTRIAL APPLICABILITY
[104] The present invention describe a system to create vacuum for different applications such as environmental control chambers, where the atmospheric conditions corresponding to different elevations can be simulated for acclimatisation purposes. This set up can be used to create vacuum, more efficiently, in extremely large spaces for applications in diverse areas such as ground applications at space establishments, semiconductor industry, Hyperloop, water purification, industrial furnaces, effective use of waste and low temperature heat in chemical industry, agriculture and horticulture operations, drying applications, aviation hypobaric training, pharmaceutical walk-in rooms, storage godowns of chemicals and high altitude acclimatised huts, , Exhaust of gases with explosion risks, Removal of gases in shale fracking systems, gas and oil recovery from depleted wells , Removal of explosive gases from mines, Indoor air quality applications, Noise and vibration reduction in vacuum systems, reducing carbon footprint of the system so as to promote sustainability, etc. but not limited to these only. i. Without using vacuum pump a sub atmospheric pressure by using natural fall of liquid column, depending upon the prevalent atmospheric and/or ambient pressure, connected to a reservoir in atmospherically sealed environment. ii. Vacuum can be created by this setup in any size and shape of the vessel at least up to 100,000 cubic ft iii. Simulated altitude in environmental chamber from sea level to atleast 14000 meters iv. Temperature range in application chamber from -80°C in cold applications to 800°C in vacuum furnaces. v. Material of overhead process chamber: stainless steel, aluminium, steel, brass, acrylic, hard steel. vi. It will have braces inside/ outside for structural stability vii. Supporting structure for overhead process chamber can be metal/ concrete. viii. Theoretical, perfect vacuum can be created. Atleast, vacuum can be created at sea level nearly equivalent to 9.3Kpa absolute. Extent of vacuum created will depend upon the configuration of the system and the type of working fluid used.

Claims

CLAIMS We/I claim
1. A vacuum system comprising atleast a liquid reservoir, a pump, a process chamber, a compartment, liquid carrying sources and atleast four valves.
2. The vacuum system as claimed in claim 1, wherein i. the liquid reservoir is fully or partially under or above the ground level; ii. the liquid reservoir is made of material such as metal, sand, concrete, cement, polymer or combination thereof; iii. the liquid reservoir surface is coated with the protected material to increase the shelf life of liquid reservoir.
3. The vacuum system as claimed in claim 1, wherein i. the pump is used to lift the liquid from the liquid reservoir to the process chamber ; ii. the pump can be of positive-displacement, centrifugal, axial-flow pumps or combination thereof or submersible pump.
4. The vacuum system as claimed in claim 1, wherein i. the height of the process chamber is dependent on the atmospheric pressure at the working site such as sea level, hills and type of liquid used; ii. process chamber is further connected to the liquid reservoir with a liquid carrying source; a drain outlet; a vent and with the vacuum line which is further connected to the compartment in which vacuum is to be created; iii. the process chamber is of shape such as tubular, cylindrical, rectangular shape or combination thereof. iv. the process chamber is of sufficient size to store the liquid for the proper functioning of the system; v. the process chamber is made of material such as natural, artificial or combination thereof; vi. the process chamber is made of material such as metal, sand, concrete, cement, polymer or combination thereof; vii. the process chamber surface is coated with the protection material to increase the shelf life of process chamber and elimination of seepage of liquid or air infiltration. he vacuum system as claimed in claim 1, wherein i. the compartment is the space in which the vacuum is to be created; ii. the compartment is having atleast one geometrical shape size; iii. the compartment size is in range of 1cm -100,000ft . iv. the compartment is made of any material such as natural, synthetic, semi- synthetic or combination thereof; v. the compartment is of any area with the boundaries; vi. the compartment is either empty or having one or Plurality of objects; vii. the compartment is of large dimensional areas (10-100,000 ft ) such as space establishments, semiconductor industry, hyperloop, water purification, industrial furnaces, effective use of waste and low temperature heat in chemical industry, agriculture and horticulture operations, drying applications, aviation hypobaric training, chemical, petroleum, petrochemical, pharmaceutical walk-in rooms, storage area of chemicals and high altitude acclimatised huts, exhaust of gases with explosion risks, removal of gases in shale fracking systems, gas and oil recovery from depleted wells, removal of explosive gases from mines, indoor air quality applications, noise and vibration reduction in vacuum systems, reducing carbon footprint of the system so as to promote sustainability etc. but not limited to these only. he vacuum system as claimed in claim 1, wherein i. the valves are used to control the circulation of the liquid in the system; ii. the valves are located at the length of the liquid carrying sources iii. atleast one valve is located on the vacuum line; iv. atleast one valve is located to control the vent of air or liquid from the process chamber; v. atleast one valve is located to control the drain of liquid from the process chamber; vi. atleast one valve is located to control the lifting of liquid from the liquid reservoir into the process chamber; vii. the valves is of any type such as Ball, Butterfly, needle Check, Diaphragm, Gate, Globe, Knife Gate, Parallel Slide, Pinch, Piston, Plug, Sluice, etc. but not limited to these only; viii. the valves can be manual, automatic or semi-automatic operated; ix. all the valves are different in terms of its functionality, material; x. Atleast two valves are the same in terms of its functionality, material. . The vacuum system as claimed in claim 1, wherein i. the liquid carrying source for the circulation of the liquid in the system; ii. atleast one liquid carrying source is linked with the pump and the process chamber , to carry the liquid from the liquid reservoir in to the process chamber; iii. atleast two liquid carrying sources are linked with the process chamber, to drain the extra liquid and to drain liquid in to the liquid reservoir respectively to and from the process chamber; iv. atleast one liquid carrying source is linked with the process chamber (106,108) and the compartment to extract the air and/or particles from the compartment to create the vacuum; v. the liquid carrying sources are of elongated, tube like structure with or without bends; vi. the liquid carrying sources are made of material such as natural, synthetic, semi- synthetic or combination thereof. . The vacuum system as claimed in claim 1, wherein
18 i. the liquid is aqueous, non-aqueous, mixed aqueous, organic mixed organic or combination thereof; ii. the liquid has a boiling point in the range of - 80°C to 400°C; iii. the liquids is low temperature metal such as Mercury, Indium or any other metal or their alloys and mixtures there off with a melting point of -80°C to 400°C; iv. the liquid has soluble-solutes (in the range of O.Olgm/litre to 500 gm/ litre) , saturation or suspensions; v. the liquid has additives to reduce their evaporation. . The method of working of the vacuum system as claimed in claim 1, comprising i. step-1: at the start of the operation, the valves 112,116andl l8are opened and rest of the valves are closed. The pump (104) starts lifting of the liquid from the liquid reservoir (102) into the process chamber (106) through the liquid carrying source (120), after the process chamber (106) is completely filled, the pump (104) is stopped, valve(116)and Vent (112) and overflow valve (122) at the top of the process chamber (106) are closed; ii. step-2: the valve (114) in the liquid carrying source (124) is opened and the liquid in the process chamber is allowed to drain in to the liquid reservoir (102), after Full vacuum is created in the overhead process chamber, valve (114) in the outlet pipe (124) will be closed; iii. step-3: the valvesl l8 is closed and 110 is opened in order to create the vacuum in the compartment (108); iv. in the device (100) there is a provision to store vacuum in the process chamber at the same value as attained in vacuum chamber for instantaneous use subsequently. 0. The method of working of the vacuum system as claimed in claim 9 can be operated a number of times depending upon the vacuum requirements and the volume of the end use applications.
19
PCT/IN2021/050298 2021-01-30 2021-03-22 A vacuum system and method thereof WO2022162679A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE212021000543.8U DE212021000543U1 (en) 2021-01-30 2021-03-22 Vacuum system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN202111004175 2021-01-30
IN202111004175 2021-01-30

Publications (1)

Publication Number Publication Date
WO2022162679A1 true WO2022162679A1 (en) 2022-08-04

Family

ID=82654267

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IN2021/050298 WO2022162679A1 (en) 2021-01-30 2021-03-22 A vacuum system and method thereof

Country Status (2)

Country Link
DE (1) DE212021000543U1 (en)
WO (1) WO2022162679A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2109986C1 (en) * 1997-04-07 1998-04-27 Игорь Иванович Шрейн Vacuum creating device
CN204082478U (en) * 2014-09-23 2015-01-07 江苏首创新能源科技有限公司 Unpowered vacuum pumping device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011075844A1 (en) 2011-05-13 2012-11-15 Paul Hartmann Ag Device for providing negative pressure for the negative pressure treatment of wounds
US10359131B2 (en) 2012-12-01 2019-07-23 Ragner Technology Corporation Collapsible hoses and pressure systems

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2109986C1 (en) * 1997-04-07 1998-04-27 Игорь Иванович Шрейн Vacuum creating device
CN204082478U (en) * 2014-09-23 2015-01-07 江苏首创新能源科技有限公司 Unpowered vacuum pumping device

Also Published As

Publication number Publication date
DE212021000543U1 (en) 2024-01-24

Similar Documents

Publication Publication Date Title
CN104833788B (en) Polluted soil restoration process simulation test system
US7340845B2 (en) Evaporation apparatus
WO2022162679A1 (en) A vacuum system and method thereof
US20060207430A1 (en) Method and apparatus for automatically removing radon gas in a sump well
CN206439617U (en) It is a kind of can be with the environment-friendly type air accumulator of pressure buffer
CN110627263A (en) Underground water light non-aqueous phase liquid pollutant cleaning system
CN106492592A (en) A kind of freon steam purifier and its method of work
CN110187059B (en) In-situ column experiment simulation system and simulation method for underground water well
CN1660699A (en) Sewage disposal process system possessing effect of preliminary filtration and dedicated equipment
CN204251396U (en) Integrated form sewage disinfector
CN203130632U (en) Sewage lift pump
CN103775069B (en) Suspended state hydrate formation simulator and stratum analogy method
CA3000795A1 (en) Method and device for the pumping of a product by suction
CN210825722U (en) Emergent sewage treatment device in river course
CN112958605A (en) Vapor extraction device with soil and groundwater remediation function
CN217369750U (en) Soil remediation system for formaldehyde contaminated soil remediation
CN207419680U (en) A kind of modified polluted underground water extraction device
CN206397702U (en) A kind of electronic membrane pump of novel energy-conserving
JP2016022997A5 (en)
CN206437988U (en) A kind of safe and reliable environmental protection sewage-treatment plant
RU2773706C1 (en) Complex for pumping and storage of gaseous products
CN214880606U (en) Water ring vacuum pump blast pipe takes water collection device
CN211521774U (en) Industrial pure water treatment equipment stable in operation and high in efficiency
CN211770882U (en) Sludge drying and removing system
CN2344390Y (en) Negative pressure evaporation type desalination plant

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21922733

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 212021000543

Country of ref document: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21922733

Country of ref document: EP

Kind code of ref document: A1