A high-pressure water jet rust removal waste recovery device

Abstract

The invention relates to a high-pressure water jet rust removal waste recovery device, comprising at least two parallel self-cleaning filters, at least two parallel pervaporators, a condenser, a vacuum tank, a sewage pump group, a water pump group and a valve group. The water outlet of the self-cleaning filter is connected to the hot liquid inlet of the pervaporator through the water pump group, the sewage outlet of the self-cleaning filter and the hot liquid outlet of the pervaporator are connected to a waste tank through the sewage pump group, the steam outlet of the pervaporator is connected to the condenser, a heat exchange system is provided between the condenser and the hot liquid cavity of the pervaporator, the valve group is used to control the parallel self-cleaning filters and the parallel pervaporators to be used independently or in combination, without stopping for sewage discharge, ensuring the continuity and efficiency of the device treatment, efficiently removing substances in wastewater, ensuring the recycling and rust removal effect of water, avoiding equipment erosion, making full use of thermal energy to improve resource utilization efficiency, and meeting the application requirements of high-pressure water jet waste recovery.

Description

Technical Field

[0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a high-pressure water jet rust removal waste recovery device. Background Art

[0002] Developing green, environmentally friendly, and energy-efficient ship repair engineering technologies is an effective approach to addressing environmental pressures and challenges. High-pressure water jets, as an alternative to traditional manual, chemical, shot, and sandblasting methods, offer advantages such as adaptability, high efficiency, low cost, no damage to the substrate, high quality, and energy conservation and environmental protection. High-pressure water jets utilize ultrahigh-pressure pumps and small-diameter nozzles to spray water jets, abrasive water jets, cavitating water jets, or pulsed water jets at high speeds onto rusted objects on ships. This delivers a strong erosion effect, effectively removing rust. Wastewater treatment is crucial.

[0003] The waste recycling and treatment technology of high-pressure water jet rust removal waste is recovered through a vacuum adsorption treatment system, the solid-liquid flow is separated, and abrasives and water are reused, which is conducive to improving the energy-saving and environmental protection efficiency of water jet rust removal. However, the existing recycling devices still have the following problems: (1) In the process of using the filter to directly intercept the suspended matter, particulate matter, abrasives, etc. in the rust removal wastewater to reduce turbidity and achieve solid-liquid flow separation, there are problems such as small filter capacity, easy contamination and clogging, and inability to monitor the filter status. The system needs to be shut down to discharge sewage, which affects the continuity and efficiency of the recycling device system. (2) For a small amount of organic pollutants and non-volatile solutes in the wastewater, it is impossible to remove them efficiently through simple filtration, resulting in an increase in concentration with the recycling of water, causing equipment corrosion and reducing the rust removal effect. (3) The heat energy of the high-pressure water jet rust removal waste is dissipated during the recycling process and cannot be reasonably utilized. The power consumption of the equipment is not reasonably configured, affecting the efficiency of resource utilization. Therefore, it is difficult to meet the application requirements. Summary of the Invention

[0004] The present invention aims to solve at least one of the above technical problems to a certain extent, and provides a high-pressure water jet rust removal waste recovery device.

[0005] The technical solution adopted by the present invention to solve its technical problem is:

[0006] A high-pressure water jet rust removal waste recovery device comprises at least two parallel self-cleaning filters, at least two parallel pervaporators, a condenser, a vacuum tank, a sewage pump group, a water pump group and a valve group, wherein the water inlet of the self-cleaning filter is connected to the rust removal wastewater interface, the water outlet of the self-cleaning filter is connected to the hot liquid inlet of the pervaporator through the water pump group, the sewage outlet of the self-cleaning filter and the hot liquid outlet of the pervaporator are connected to a waste tank through the sewage pump group, the steam outlet of the pervaporator is connected to the condenser, the condenser is connected to the vacuum pump group through the vacuum tank, a heat exchange system is provided between the condenser and the hot liquid cavity of the pervaporator, the condenser is connected to a water tank, and the valve group is used to control the parallel self-cleaning filters and the parallel pervaporators to be used independently or in combination.

[0007] Furthermore, the self-cleaning filter includes a filter element and a shell, a water inlet chamber is provided between the inside of the filter element and the water inlet of the shell, a water outlet chamber is provided between the outside of the filter element and the water outlet of the shell, a pressure difference controller is provided between the water outlet chamber and the water inlet chamber, a sewage discharge chamber connected to the sewage outlet is provided in the shell, a reduction motor is provided on the shell, the reduction motor is connected to a brush whose end passes through the sewage discharge chamber and is placed inside the filter element, and the brush is provided with a through hole connected to the water inlet chamber and the sewage discharge chamber.

[0008] Furthermore, a first pipeline is provided between the water inlet of the self-cleaning filter and the rust removal wastewater interface, a second pipeline is provided between the water outlet of the self-cleaning filter and the inlet of the water pump group, and a third pipeline is provided between the sewage outlet of the self-cleaning filter and the inlet of the sewage pump group. The valve group includes a first valve located on the first pipeline, a second valve located on the second pipeline, and a third valve located on the third pipeline.

[0009] Furthermore, the pervaporator includes a plurality of stages of hot liquid cavities and steam cavities arranged at intervals, and a pervaporation membrane is provided between each stage of the hot liquid cavity and the steam cavity.

[0010] Furthermore, the hot liquid inlet of the latter stage hot liquid cavity is connected to the hot liquid outlet of the previous stage hot liquid cavity, a fourth pipeline is provided between the outlet of the water pump group and the hot liquid inlet of the first stage hot liquid cavity, and a fifth pipeline is provided between the hot liquid outlet of the last stage hot liquid cavity and the inlet of the sewage pump group.

[0011] Furthermore, the steam inlet of the latter steam chamber is connected to the steam outlet of the former hot liquid chamber, the steam inlet of the first steam chamber is connected to a purge pipe, and a sixth pipeline is provided between the steam outlet of the last steam chamber and the condenser.

[0012] Furthermore, temperature detectors are provided on the fourth pipeline and the sixth pipeline, and the valve group includes a fourth valve located on the fourth pipeline, a fifth valve located on the fifth pipeline, an air intake valve located on the purge pipe and a first one-way valve located on the sixth pipeline.

[0013] Furthermore, the heat exchange system includes a first heat exchanger, a compressor, a second heat exchanger and an expansion valve. The first heat exchanger exchanges heat with the condenser. The inlet of the compressor is connected to the outlet of the first heat exchanger, and the outlet of the compressor is connected to the inlet of the second heat exchanger. There are at least two second heat exchangers and they exchange heat with the hot liquid cavity of the corresponding permeation evaporator. A multi-way pipeline is provided between the outlets of several second heat exchangers and the expansion valve. A diverter valve and a regulating valve are provided on the multi-way pipeline. The expansion valve is connected to the inlet of the first heat exchanger.

[0014] Furthermore, a gas-water separator is provided between the vacuum tank and the condenser.

[0015] Furthermore, a concentrated water storage tank is provided between the sewage pump group and the waste tank, and the concentrated water storage tank is provided with a jacket and a waste outlet.

[0016] Furthermore, a plurality of parallel precision filters are provided between the condenser and the water tank, a circulation pump is provided between the plurality of precision filters and the water tank, and a second one-way valve is provided between the plurality of precision filters and the condenser.

[0017] Furthermore, the circulation pump and several precision filters are connected in parallel with bypass pipelines, and the valve group includes a sixth valve located between the precision filter and the condenser, a seventh valve located between the precision filter and the circulation pump, an eighth valve located between the circulation pump and the water tank, a ninth valve located between the precision filter and the bypass pipeline, and a tenth valve located on the bypass pipeline.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] (1) Self-cleaning filters are used to achieve self-cleaning functions, improve filter accuracy, avoid contamination and clogging, monitor filter status, and control the joint use of parallel self-cleaning filters through valve groups to improve processing efficiency. Even if a self-cleaning filter fails for maintenance, other self-cleaning filters can be used independently. Parallel precision filters can be used independently or in combination without stopping the machine for sewage discharge, ensuring the continuity of the device processing and improving processing efficiency.

[0020] (2) A pervaporator is used in conjunction with a precision filter. The concentrated wastewater and the sewage from the self-cleaning filter are pumped to the sewage pump group for centralized treatment through step-by-step treatment. The pervaporation is condensed by the condenser and further filtered or recycled through the parallel precision filter to effectively remove a small amount of organic pollutants and non-volatile solutes in the wastewater, ensuring the recycling and rust removal of water and avoiding equipment corrosion.

[0021] (3) Using a permeation evaporator and a condenser in conjunction with a heat exchange system, the valve group controls the energy consumption of the independent or combined use of the parallel self-cleaning filters, fully utilizing the waste heat energy after the high-pressure water jet, and through the heat exchange between the first heat exchanger and the condenser, the corresponding second heat exchanger is connected to the heat exchange system in conjunction with or independently configured to consume energy, so that the second heat exchanger and the hot liquid cavity can exchange heat in a cycle, fully utilizing the heat energy in the processing process and improving resource utilization efficiency.

[0022] In summary, meeting the application needs of high-pressure water jet waste recycling is conducive to improving energy conservation and environmental protection effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments with reference to the accompanying drawings, in which:

[0024] Figure 1 It is a structural diagram of an embodiment of the present invention.

[0025] Markings in the figure: self-cleaning filter 1, permeation evaporator 2, condenser 3, vacuum tank 4, sewage pump group 5, water pump group 6, rust removal wastewater interface 8, waste tank 10, vacuum pump group 11, water pool 13, filter element 101, shell 102, water inlet chamber 103, water outlet chamber 104, sewage discharge chamber 105, reduction motor 106, brush 107, through hole 108, pressure difference controller 109, first pipeline 141, second pipeline 142, third pipeline 143, first valve 701, second valve 702, third valve 703, stop valve 704, hot material liquid chamber 201, steam chamber 202, permeation evaporation membrane 203, fourth pipeline 14 4. Fifth pipeline 145, purge pipe 146, sixth pipeline 147, temperature detector 15, fourth valve 705, fifth valve 706, first one-way valve 707, first heat exchanger 121, compressor 122, second heat exchanger 123, expansion valve 124, multi-way pipeline 125, diverter valve 126, regulating valve 127, gas-water separator 16, concentrated water storage tank 17, jacket 18, waste outlet 19, precision filter 20, circulation pump 21, second one-way valve 22, bypass pipeline 148, sixth valve 708, seventh valve 709, eighth valve 710, ninth valve 711, tenth valve 712, intake valve 713. DETAILED DESCRIPTION

[0026] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0027] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "axial", "radial", "vertical", "horizontal", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" and "several" mean two or more, unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0029] like Figure 1As shown, a preferred embodiment of the high-pressure water jet rust removal waste recovery device of the present invention, the high-pressure water jet rust removal waste recovery device includes at least two parallel self-cleaning filters 1, at least two parallel pervaporators 2, a condenser 3, a vacuum tank 4, a sewage pump group 5, a water pump group 6 and a valve group, the water inlet of the self-cleaning filter 1 is connected to the rust removal wastewater interface 8, the water outlet of the self-cleaning filter 1 is connected to the hot liquid inlet of the pervaporator 2 through the water pump group 6, the sewage outlet of the self-cleaning filter 1 and the hot liquid outlet of the pervaporator 2 are connected to the waste tank 10 through the sewage pump group 5, the steam outlet of the pervaporator 2 is connected to the condenser 3, the condenser 3 is connected to the vacuum pump group 11 through the vacuum tank 4, a heat exchange system is provided between the condenser 3 and the hot liquid cavity 201 of the pervaporator 2, the condenser 3 is connected to the water tank 13, and the valve group is used to control the parallel self-cleaning filters 1 and the parallel pervaporators 2 to be used independently or in combination.

[0030] Furthermore, the self-cleaning filter 1 includes a filter element 101 and a shell 102, a water inlet chamber 103 is provided between the inside of the filter element 101 and the water inlet of the shell 102, a water outlet chamber 104 is provided between the outside of the filter element 101 and the water outlet of the shell 102, a pressure difference controller 109 is provided between the water outlet chamber 104 and the water inlet chamber 103, a sewage discharge chamber 105 connected to the sewage outlet is provided in the shell 102, a reduction motor 106 is provided on the shell 102, the reduction motor 106 is connected to a brush 107 whose end passes through the sewage discharge chamber 105 and is placed inside the filter element 101, and the brush 107 is provided with a through hole 108 connected to the water inlet chamber 103 and the sewage discharge chamber 105.

[0031] Furthermore, a first pipeline 141 is provided between the water inlet of the self-cleaning filter and the rust removal wastewater interface 8, a second pipeline 142 is provided between the water outlet of the self-cleaning filter and the inlet of the water pump group 6, and a third pipeline 143 is provided between the sewage outlet of the self-cleaning filter and the inlet of the sewage pump group 5. The valve group includes a first valve 701 located on the first pipeline 141, a second valve 702 located on the second pipeline 142, and a third valve 703 located on the third pipeline 143.

[0032] Furthermore, the rust removal wastewater interface 8 includes several parallel connections, and a stop valve 704 is provided on the rust removal wastewater interface 8 to control the number and flow rate of the suction ends of the high-pressure jet waste.

[0033] The working principle of the self-cleaning filter 1 is as follows: high-pressure jet wastewater enters the interior of the filter element 101 from the water inlet of the housing 102. Under the filtering action of the filter element 101, large particles are trapped inside the filter element 101, and water passes through the filter element 101 into the water outlet chamber 104 outside the filter element 101 and is discharged from the water outlet of the housing 102, thereby achieving the filtering effect; the pressure difference between the water inlet chamber 103 and the water outlet chamber 104 is monitored by the pressure difference controller 109. When the pressure difference is small, the pressure difference is balanced to ensure the filtering effect; when the pressure difference is large, the corresponding first valve 7 is closed. 01 reduces the flow rate, and the reduction motor 106 drives the brush 107 to rotate inside the filter element 101, opening the third valve 703. Through the bristles outside the brush 107 and the reverse adsorption effect generated by the sewage chamber 105 through the through hole 108, the waste attached to the surface of the filter element 101 is sucked into the brush 107, and discharged to the sewage chamber 105 and through the sewage outlet through the through hole 108 of the brush 107, thereby realizing the self-cleaning action of the self-cleaning filter 1, reducing the disassembly and independent working frequency of the self-cleaning filter 1, and ensuring the efficient operation of the device.

[0034] Furthermore, the pervaporator 2 includes a plurality of stages of hot liquid cavities 201 and steam cavities 202 arranged at intervals, and a pervaporation membrane 203 is provided between each stage of the hot liquid cavity 201 and the steam cavity 202 .

[0035] Furthermore, the hot liquid inlet of the latter hot liquid cavity 201 is connected to the hot liquid outlet of the previous hot liquid cavity 201, a fourth pipeline 144 is provided between the outlet of the water pump group 6 and the hot liquid inlet of the first hot liquid cavity 201, and a fifth pipeline 145 is provided between the hot liquid outlet of the last hot liquid cavity 201 and the inlet of the sewage pump group 5.

[0036] Furthermore, the steam inlet of the rear steam cavity 202 is connected to the steam outlet of the previous hot liquid cavity 201, the steam inlet of the first steam cavity 202 is connected to the purge pipe 146, and a sixth pipeline 147 is provided between the steam outlet of the last steam cavity 202 and the condenser 3.

[0037] Furthermore, a temperature detector 15 is provided on the fourth pipeline 144 and the sixth pipeline 147, and the valve group includes a fourth valve 705 located on the fourth pipeline 144, a fifth valve 706 located on the fifth pipeline 145, an air intake valve 713 located on the purge pipe 146 and a first one-way valve 707 located on the sixth pipeline 147.

[0038] Furthermore, a fifth pipeline 145 is provided between the hot liquid outlet of each stage of the hot liquid cavity 201 and the sewage pump group 5. The fifth valve 706 on the fifth pipeline 145 is opened and closed to realize the diversion or diversion closure of the corresponding stage of the hot liquid cavity 201. A sixth pipeline 147 is provided between the steam outlet of each stage of the steam cavity 202 and the condenser 3. The first one-way valve 707 on the sixth pipeline 147 is opened and closed to realize the diversion or diversion closure of the corresponding steam cavity 202, so as to adapt the processing volume and reduce the processing power consumption.

[0039] The operating principle of the pervaporator 2 is as follows: driven by the difference in vapor partial pressure of the components in the liquid mixture, separation is achieved by utilizing the different dissolution and diffusion rates of the components through the pervaporation membrane 203. That is, when there is a temperature difference between the hot liquid cavity 201 and the steam cavity 202 on both sides of the pervaporation membrane 203, due to the difference in vapor pressure, water vapor molecules pass through the micropores of the pervaporation membrane 203 and move within the steam cavity 202 with the purge, so that the wastewater in the hot liquid cavity 201 is gradually concentrated, thereby achieving the concentration of the aqueous solution of non-volatile solutes.

[0040] Furthermore, the heat exchange system includes a first heat exchanger 121, a compressor 122, a second heat exchanger 123 and an expansion valve 124. The first heat exchanger 121 exchanges heat with the condenser 3. The inlet of the compressor 122 is connected to the outlet of the first heat exchanger 121, and the outlet of the compressor 122 is connected to the inlet of the second heat exchanger 123. The second heat exchanger 123 has at least two and exchanges heat with the hot liquid cavity 201 of the corresponding pervaporator 2. A multi-way pipeline 125 is provided between the outlets of several second heat exchangers 123 and the expansion valve 124. A diverter valve 126 and a regulating valve 127 are provided on the multi-way pipeline 125. The expansion valve 124 is connected to the inlet of the first heat exchanger 121.

[0041] Furthermore, a gas-water separator 16 is provided between the vacuum tank 4 and the condenser 3 , and a gravity type or circulation type separator can be used to separate gas and liquid to ensure vacuum adsorption.

[0042] Furthermore, a concentrated water storage tank 17 is provided between the sewage pump group 5 and the waste tank 10. The concentrated water storage tank 17 is provided with a jacket 18 and a waste outlet 19. The filtered sewage and concentrated water from osmotic evaporation are controlled by the concentrated water storage tank 17 for further sedimentation treatment and enter the waste tank 10. The jacket 18 is used to pass heat transfer oil, which is further processed by the agitator in the waste tank 10 and discharged from the waste outlet 19 for further separation and recovery and solid waste dry distillation and pyrolysis treatment.

[0043] Furthermore, several parallel precision filters 20 are provided between the condenser 3 and the water tank, a circulation pump 21 is provided between the several precision filters 20 and the water pool 13, and a second one-way valve 22 is provided between the several precision filters 20 and the condenser 3. The circulation pump 21 further filters the water flow from the condenser 3 through the precision filter 20 and collects it into the water pool 13.

[0044] Furthermore, the circulation pump 21 and several precision filters 20 are connected in parallel with a bypass line 148, and the valve group includes a sixth valve 708 located between the precision filter 20 and the condenser 3, a seventh valve 709 located between the precision filter 20 and the circulation pump 21, an eighth valve 710 located between the circulation pump 21 and the water pool 13, a ninth valve 711 located between the precision filter 20 and the bypass line 148, and a tenth valve 712 located on the bypass line 148.

[0045] The working principle of the above device is:

[0046] Open the first valve 701 of the first pipeline 141 corresponding to the self-cleaning filter and the second valve 702 of the second pipeline 142 to realize the parallel joint use of at least two self-cleaning filters 1; the high-pressure water jet rust removal waste is sucked into the water inlet of the corresponding self-cleaning filter 1 through the rust removal wastewater interface 8 and the first pipeline 141; under the filtering action of the filter element 101, the filtered wastewater passes through the water outlet of the self-cleaning filter 1 under the suction action of the water pump group 6 and enters the hot liquid inlet of the first-stage hot liquid cavity 201 of the pervaporator 2 along the second pipeline 142.

[0047] When the self-cleaning filter is clogged, the first valve 701 of the first pipeline 141 corresponding to the self-cleaning filter is closed or the opening is reduced, and the third valve 703 of the third pipeline 143 is opened, and the self-cleaning filter is self-cleaning. The solid waste in the filter element 101 is pumped into the inlet of the sewage pump group 5 along with the sewage from the sewage chamber 105 and the sewage outlet through the third pipeline 143 and stored in the concentrated water storage tank 17; the first valve 701, the second valve 702 and the third valve 703 are closed to close the corresponding self-cleaning filter so that it can be disassembled for inspection or to reduce power consumption when a blockage occurs. The other pervaporators 2 can be used independently by opening the corresponding first valve 701, the second valve 702 and the third valve 703 to ensure continuous operation of the device.

[0048] When the first valve 701 and the third valve 703 are opened at a wide angle at the same time, the filtering function of the self-cleaning filter is not used, which can avoid excessive pressure difference in the device and ensure the safety of the device in an emergency.

[0049] The fourth valve 705 on the fourth pipeline 144, the fifth valve 706 on the fifth pipeline 145, and the air inlet valve 713 on the purge pipe 146 of the corresponding pervaporator 2 are opened to realize the parallel joint use of at least two parallel pervaporators 2; the hot filtered wastewater is heat-exchanged with the second heat exchanger 123 of the heat exchange system at the hot liquid inlet for further heating; under the action of the vapor partial pressure difference, the water vapor in the hot liquid cavity 201 passes through the pervaporation membrane 203 and enters the steam cavity, and the vacuum pump group 1 is turned on. Suction is generated by the vacuum tank 4 to suck the purge gas from the purge pipe 146. Water vapor follows the purge gas entering the purge pipe 146 and flows toward the steam outlet to the steam inlet of the next-stage steam chamber 202. The wastewater in the hot liquid chamber 201 enters the hot liquid inlet of the next-stage hot liquid chamber 201 through the hot liquid outlet. In this way, the wastewater is concentrated step by step and flows toward the inlet of the sewage pump group 5 through the fifth pipeline 145. The steam fluid evaporated step by step enters the condenser 3 through the steam outlet and the sixth pipeline 147.

[0050] Close the fourth valve 705, the fifth valve 706 and the air inlet valve 713 of the corresponding pervaporator 2 to shut down the corresponding pervaporator 2 for use so that it can be disassembled and inspected in case of failure. Other pervaporators 2 can be used independently by opening the fourth valve 705, the fifth valve 706 and the sixth valve 708 of the corresponding pervaporator 2 to ensure continuous operation of the device. The temperature is monitored by the temperature detector 15.

[0051] The fluid in the heat exchange system absorbs heat through the first heat exchanger 121 and the condenser 3, and becomes a low-pressure gas. It is compressed by the compressor 122 to become high-pressure steam and is diverted to the first heat exchanger 121. When the corresponding pervaporator 2 is in use, the corresponding diverter valve 126 on the multi-way pipeline 125 is opened, so that the corresponding second heat exchanger 123 is connected to the heat exchange system, so that the second heat exchanger 123 exchanges heat with the hot liquid cavity 201 and releases heat, and then the temperature is reduced. Under the throttling action of the regulating valve 127, the expansion valve 124 allows the medium-temperature and high-pressure fluid to pass through the throttling to become low-temperature and low-pressure wet steam, which is then input into the first heat exchanger 121 for heat exchange and temperature increase, thereby realizing heat exchange and fluid circulation in the heat exchange system. Similarly, when the corresponding pervaporator 2 is closed, the corresponding diverter valve 126 on the multi-way pipeline 125 is closed, so that the corresponding first heat exchanger 121 is not connected to the heat exchange system, thereby ensuring the energy efficiency of the heat exchange system.

[0052] Similarly, the concentrated wastewater is pumped by the sewage pump group 5 and treated in the concentrated water storage tank 17 and the waste tank 10. The steam is condensed into water through heat exchange with the first heat exchanger 121 in the condenser 3. The sixth valve 708 between the precision filter 20 and the condenser 3, the seventh valve 709 between the precision filter 20 and the circulation pump 21, and the tenth valve 712 on the bypass line 148 are opened. The eighth valve 710 between the circulation pump 21 and the water tank 13 and the ninth valve 711 between the precision filter 20 and the bypass line 148 are closed. The condensed water is further filtered through the parallel precision filter 20 and circulated through the precision filter 20 through the bypass valve under the pumping of the circulation pump 21.

[0053] When the precision filter 20 fails for repair, the sixth valve 708 and the seventh valve 709 of the corresponding precision filter 20 are closed to realize the shutdown of the corresponding precision filter 20 and avoid affecting the function of the device; the circulation filtration is closed by opening the eighth valve 710 located between the circulation pump 21 and the water pool 13, closing the ninth valve 711 located between the precision filter 20 and the bypass line 148, and the tenth valve 712 on the bypass line 148; by closing all the sixth valves 708 and the seventh valve 709, closing the tenth valve 712, opening the ninth valve 711 located between the precision filter and the bypass line 148, and opening the eighth valve 710, the condensed water can be directly pumped to the circulation pump 21 through the bypass line 148 and the ninth valve 711 to avoid excessive pressure difference; the filtered clean water is sent to the water pool 13 for storage and collection for recycling.

[0054] The above-mentioned device uses a self-cleaning filter to achieve a self-cleaning function, improve the filter screen accuracy, avoid pollution and blockage, monitor the filter status, and improve the processing efficiency by controlling the joint use of the parallel self-cleaning filters 1 through the valve group. Even if one of the self-cleaning filters 1 fails for maintenance, the other self-cleaning filters 1 can be used independently, and the parallel precision filters 20 can be used independently or in combination to solve the problem that the existing shutdown for sewage discharge affects the continuity and efficiency of the recovery device.

[0055] The above-mentioned device adopts a pervaporator 2 in combination with a precision filter 20, and realizes separation by utilizing the different dissolution and diffusion rates of components through the pervaporation membrane 203. The concentrated wastewater and the sewage discharged from the self-cleaning filter are pumped for centralized treatment through the sewage pump group 5 through step-by-step treatment. The step-by-step pervaporation is condensed through the condenser 3 and further filtered or circulated through the parallel precision filter 20, thereby solving the problem that a small amount of organic pollutants, non-volatile solutes, etc. in the wastewater cannot be efficiently removed by simple filtration, resulting in an increase in concentration with the recycling of water, causing equipment erosion and reducing the rust removal effect.

[0056] The above-mentioned device adopts a permeation evaporator 2 and a condenser 3 in conjunction with a heat exchange system, and controls the energy consumption of the independent or joint use of the parallel self-cleaning filter 1 through a valve group, fully utilizing the waste heat energy after the high-pressure water jet, and heat exchanges with the condenser 3 through the first heat exchanger 121, and the corresponding second heat exchanger 123 is jointly or independently connected to the heat exchange system to configure the energy consumption, so that the second heat exchanger 123 and the hot material liquid cavity 201 are heat exchanged in a cycle, fully utilizing the heat energy in the treatment process, and solving the problem that the heat energy of the waste removed by high-pressure water jet is dissipated with the recovery process and cannot be reasonably utilized, the power consumption of the equipment cannot be reasonably configured, and the efficiency of resource utilization is affected.

[0057] In summary, meeting the application needs of high-pressure water jet waste recycling is conducive to improving energy conservation and environmental protection effects.

[0058] The series of detailed descriptions listed above are only specific descriptions of feasible embodiments of the present invention. They are not intended to limit the scope of protection of the present invention. Any equivalent embodiments or changes that do not deviate from the technical spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-pressure water jet rust removal waste recovery device, characterized in that: The invention comprises at least two parallel self-cleaning filters (1), at least two parallel pervaporators (2), a condenser (3), a vacuum tank (4), a sewage pump group (5), a water pump group (6) and a valve group, wherein the water inlet of the self-cleaning filter (1) is connected to a rust removal wastewater interface (8), the water outlet of the self-cleaning filter (1) is connected to a hot liquid inlet of the pervaporator (2) via a water pump group (6), the sewage outlet of the self-cleaning filter (1) and the hot liquid outlet of the pervaporator (2) are connected to a waste tank (10) via the sewage pump group (5), the steam outlet of the pervaporator (2) is connected to the condenser (3), the condenser (3) is connected to a vacuum pump group (11) via a vacuum tank (4), a heat exchange system is provided between the condenser (3) and the hot liquid cavity (201) of the pervaporator (2), the condenser (3) is connected to a water pool (13), and the valve group is used to control the parallel self-cleaning filters (1) and the parallel pervaporators (2) to be used independently or in combination; The heat exchange system comprises a first heat exchanger (121), a compressor (122), a second heat exchanger (123) and an expansion valve (124); the first heat exchanger (121) performs heat exchange with a condenser (3); the inlet of the compressor (122) is connected to the outlet of the first heat exchanger (121); the outlet of the compressor (122) is connected to the inlet of the second heat exchanger (123); the second heat exchanger (123) has at least two heat exchangers (123) and performs heat exchange with a corresponding hot material liquid cavity (201) of a permeation evaporator (2); a multi-way pipeline (125) is provided between the outlets of a plurality of second heat exchangers (123) and the expansion valve (124); a diverter valve (126) and a regulating valve (127) are provided on the multi-way pipeline (125); and the expansion valve (124) is connected to the inlet of the first heat exchanger (121); A plurality of parallel precision filters (20) are provided between the condenser (3) and the water tank, a circulation pump (21) is provided between the plurality of precision filters (20) and the water tank (13), and a second one-way valve (22) is provided between the plurality of precision filters (20) and the condenser (3).

2. A high-pressure water jet rust removal waste recovery device according to claim 1, characterized in that: The self-cleaning filter (1) comprises a filter element (101) and a housing (102); a water inlet chamber (103) is provided between the interior of the filter element (101) and the water inlet of the housing (102); a water outlet chamber (104) is provided between the exterior of the filter element (101) and the water outlet of the housing (102); a pressure difference controller (109) is provided between the water outlet chamber (104) and the water inlet chamber (103); a sewage discharge chamber (105) communicating with a sewage discharge port is provided inside the housing (102); a reduction motor (106) is provided on the housing (102); the reduction motor (106) is connected to a brush (107) whose end passes through the sewage discharge chamber (105) and is disposed inside the filter element (101); and the brush (107) is provided with a through hole (108) communicating with the water inlet chamber (103) and the sewage discharge chamber (105).

3. The high-pressure water jet rust removal waste recovery device according to claim 1 is characterized in that: A first pipeline (141) is provided between the water inlet of the self-cleaning filter (1) and the rust removal wastewater interface (8), a second pipeline (142) is provided between the water outlet of the self-cleaning filter and the inlet of the water pump group (6), and a third pipeline (143) is provided between the sewage outlet of the self-cleaning filter and the inlet of the sewage pump group (5). The valve group comprises a first valve (701) located on the first pipeline (141), a second valve (702) located on the second pipeline (142), and a third valve (703) located on the third pipeline (143).

4. The high-pressure water jet rust removal waste recovery device according to claim 1 is characterized in that: The pervaporator (2) comprises a plurality of stages of hot liquid cavities (201) and steam cavities (202) arranged at intervals, and a pervaporation membrane (203) is provided between each stage of the hot liquid cavity (201) and the steam cavity (202); The hot liquid inlet of the next-stage hot liquid cavity (201) is connected to the hot liquid outlet of the previous-stage hot liquid cavity (201); a fourth pipeline (144) is provided between the outlet of the water pump group (6) and the hot liquid inlet of the first-stage hot liquid cavity (201); and a fifth pipeline (145) is provided between the hot liquid outlet of the last-stage hot liquid cavity (201) and the inlet of the sewage pump group (5); The steam inlet of the latter steam cavity (202) is connected to the steam outlet of the former hot liquid cavity (201), the steam inlet of the first steam cavity (202) is connected to a purge pipe (146), and a sixth pipeline (147) is provided between the steam outlet of the last steam cavity (202) and the condenser (3).

5. A high-pressure water jet rust removal waste recovery device according to claim 4, characterized in that: The fourth pipeline (144) and the sixth pipeline (147) are both provided with a temperature detector (15), and the valve group comprises a fourth valve (705) located on the fourth pipeline (144), a fifth valve (706) located on the fifth pipeline (145), an air inlet valve (713) located on the purge pipe (146), and a first one-way valve (707) located on the sixth pipeline (147).

6. The high-pressure water jet rust removal waste recovery device according to claim 1 is characterized in that: A gas-water separator (16) is provided between the vacuum tank (4) and the condenser (3).

7. The high-pressure water jet rust removal waste recovery device according to claim 1 is characterized in that: A concentrated water storage tank (17) is provided between the sewage pump group (5) and the waste tank (10), and a jacket (18) and a waste outlet (19) are provided on the concentrated water storage tank (17).

8. The high-pressure water jet rust removal waste recovery device according to claim 1 is characterized in that: The circulation pump (21) and the plurality of precision filters (20) are connected in parallel with a bypass pipeline (148), and the valve group comprises a sixth valve (708) located between the precision filter (20) and the condenser (3), a seventh valve (709) located between the precision filter (20) and the circulation pump (21), an eighth valve (710) located between the circulation pump (21) and the water tank (13), a ninth valve (711) located between the precision filter (20) and the bypass pipeline (148), and a tenth valve (712) located on the bypass pipeline (148).

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