CN112999744A - Back-flushing cooling device of hydraulic system - Google Patents
Back-flushing cooling device of hydraulic system Download PDFInfo
- Publication number
- CN112999744A CN112999744A CN202110371057.2A CN202110371057A CN112999744A CN 112999744 A CN112999744 A CN 112999744A CN 202110371057 A CN202110371057 A CN 202110371057A CN 112999744 A CN112999744 A CN 112999744A
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- Prior art keywords
- filter
- electromagnetic valve
- heat exchanger
- plate heat
- cooling
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- 238000001816 cooling Methods 0.000 title claims abstract description 16
- 238000011010 flushing procedure Methods 0.000 title description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 239000000498 cooling water Substances 0.000 claims abstract description 35
- 239000000110 cooling liquid Substances 0.000 claims abstract description 34
- 238000011001 backwashing Methods 0.000 claims abstract description 14
- 238000004140 cleaning Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/12—Devices for taking out of action one or more units of multi- unit filters, e.g. for regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
- B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/042—Controlling the temperature of the fluid
- F15B21/0423—Cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Thermal Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid Mechanics (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a backwashing cooling device of a hydraulic system, which automatically performs backwashing on a filter element without detaching the filter element. The invention comprises a water supply device, wherein the output end of the water supply device is respectively connected with the inlet of an electromagnetic valve A and the inlet of an electromagnetic valve C, the outlet of the electromagnetic valve A is respectively connected with the input ports A of a plurality of filters, cooling water or cooling liquid filtered by filter elements of the filters enters a connector 1 of a plate heat exchanger through a filter element inner port P of the filters, a connector 2 of the plate heat exchanger is respectively connected with the inlet of the electromagnetic valve B and the outlet of the electromagnetic valve C, and the outlet of the electromagnetic valve B is connected with the input end of the water supply device; the input port 3 and the output port 4 of the plate heat exchanger are connected with a hydraulic system to form a circulation loop. The invention carries out automatic back washing on the filter element through the design of the double circulation loop, can automatically carry out back washing on the filter element under the conditions of no stop and no need of disassembling the filter element, and achieves the effect of saving the cost.
Description
Technical Field
The invention relates to the technical field of cooling of hydraulic systems, in particular to a backwashing cooling device of a hydraulic system.
Background
Hydraulic systems are widely used in industry, and function to transmit power and motion as a main function by increasing the force by changing the pressure. The oil temperature of the hydraulic system can continuously rise in the using process, and the oil pressure system needs to be cooled through a circulating water cooling mode. The circulating cooling water cools the hydraulic system through the plate heat exchanger, the plate heat exchanger is a high-efficiency heat exchanger formed by stacking a series of metal sheets with certain corrugated shapes, thin rectangular channels are formed among various sheets, and heat exchange is carried out through the sheets. Circulating water can enter the plate heat exchanger after being filtered by the filter, otherwise the plate heat exchanger is blocked. The filter core surface can accumulate the impurity of aquatic after using a certain time, causes the filter jam, has reduced the velocity of flow, influences the cooling effect.
Therefore, the filter element of the filter needs to be cleaned or replaced frequently in the using process, the conventional cleaning mode is to stop the machine and manually detach the filter element for cleaning or replacing a new filter element, the hydraulic system needs to operate for a long time, the machine cannot be stopped in midway, and the mode of manually cleaning the filter element wastes time and labor.
Disclosure of Invention
Based on this, it is necessary to provide an automatic backwashing device for filter elements, which can automatically backwash the filter elements without stopping the machine and disassembling the filter elements, aiming at the defects of the prior art.
In order to solve the problems of the prior art, the invention adopts the following technical scheme:
a back-washing cooling device of a hydraulic system comprises a water supply device, wherein cooling water or cooling liquid is filled in the water supply device, the output end of the water supply device is respectively connected with (in parallel) the inlet of an electromagnetic valve A and the inlet of an electromagnetic valve C, the outlet of the electromagnetic valve A is respectively connected with (in parallel) the input port A of a plurality of filters, the cooling water or the cooling liquid filtered by filter elements of the filters enters a connector 1 of a plate heat exchanger through the inner port P of the filter elements of the filters, a connector 2 of the plate heat exchanger is respectively connected with (in parallel) the inlet of an electromagnetic valve B and the outlet of the electromagnetic valve C, and the outlet of the electromagnetic valve B is;
an output port B of the filter is connected to the input end of the water supply device after passing through the D electromagnetic valve, an inlet of the D electromagnetic valve is connected with the output port B of the filter, and an outlet of the C electromagnetic valve is connected with the input end of the water supply device;
the input port 3 and the output port 4 of the plate heat exchanger are connected with a hydraulic system to form a circulation loop.
Further, in some embodiments, an outlet of the electromagnetic valve a is respectively connected (in parallel) to an input port a of the first filter and an input port a of the second filter, the cooling water or the cooling liquid filtered by the filter element of the first filter enters the port 1 of the plate heat exchanger through the filter element inner port P of the first filter, the cooling water or the cooling liquid filtered by the filter element of the second filter enters the port 1 of the plate heat exchanger through the filter element inner port P of the second filter, and an outlet of the electromagnetic valve C is connected to the port 2 of the plate heat exchanger; the interface 2 of the plate heat exchanger is connected to the input end of the water supply device after passing through the inlet and the outlet of the electromagnetic valve B, and the electromagnetic valve is a two-position two-way electromagnetic valve, preferably a pilot type two-position two-way electromagnetic valve.
Further, in some embodiments, the output port B of the first filter and the output port B of the second filter are connected to the input end of the water supply device after passing through the D solenoid valve, and the inlet of the D solenoid valve is connected to the output ports B, C of the first filter and the second filter, and the outlet of the solenoid valve is connected to the input end of the water supply device.
A cleaning method of a back flush cooling device of a hydraulic system comprises the following steps:
when the electromagnetic valve is in a working state, the electromagnetic valve A is opened (electrified), the electromagnetic valve B is opened (electrified), the electromagnetic valve C is closed (power-off), and the electromagnetic valve D is closed (power-off); at the moment, cooling water or cooling liquid at the output end of the water supply device respectively enters the input ports A of the first filter and the second filter after passing through the electromagnetic valve A, the cooling water or cooling liquid filtered by the filter elements of the first filter and the second filter respectively enters the interface 1 of the plate heat exchanger after passing through the inner openings P of the filter elements of the first filter and the second filter, because the electromagnetic valve D is powered off and is not conducted at the moment, the output ports B of the first filter and the second filter are in a closed state, the cooling water or cooling liquid passing through the plate heat exchanger flows from the interface 2 of the plate heat exchanger to the inlet of the electromagnetic valve B, and the cooling water or cooling liquid returns to the input end of the water supply device through the outlet of the electromagnetic valve B to form a cooling circulation loop; the electromagnetic valve is a two-position two-way electromagnetic valve, preferably a pilot type two-position two-way electromagnetic valve;
in a backwashing state, the electromagnetic valve A is closed (power off), the electromagnetic valve B is closed (power off), the electromagnetic valve C is opened (power on), and the electromagnetic valve D is opened (power on); at the moment, cooling water or cooling liquid at the output end of the water supply device passes through the electromagnetic valve C and then is connected to the interface 2 of the plate heat exchanger, the cooling water or cooling liquid passing through the plate heat exchanger flows from the interface 1 of the plate heat exchanger to the inner openings P of the filter elements of the first filter and the second filter, because the electromagnetic valve A is powered off and is not conducted at the moment, the input openings A of the first filter and the second filter are in a closed state, the cooling water or cooling liquid respectively flows to the inlet of the electromagnetic valve D through the output openings B of the first filter and the second filter after the filter elements of the first filter and the second filter are back washed, and returns to the input end of the water supply device through the outlet of the electromagnetic valve D to form a back washing.
The invention carries out automatic back washing on the filter element through the design of the double circulation loop, and can automatically carry out back washing on the filter element under the conditions of no stop and no need of disassembling the filter element; the normal operation of the hydraulic system is not influenced, time and labor are saved, and the effects of improving the efficiency and saving the cost are achieved.
Drawings
FIG. 1 is a schematic illustration of a conventional state of the practice of the present invention;
FIG. 2 is a schematic diagram of a backwash state according to an embodiment of the present invention.
The reference numerals are explained below:
the water supply device 21, the plate heat exchanger 22, the hydraulic system 24, the A electromagnetic valve 31, the B electromagnetic valve 32, the C electromagnetic valve 33, the D electromagnetic valve 34, the first filter 37 and the second filter 38.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
FIG. 1 is a schematic diagram of an embodiment of the present invention, which comprises a water supply device 21, wherein the water supply device 21 contains cooling water or cooling liquid, the output ends of the water supply device 21 are respectively connected (in parallel) to the inlet of an A electromagnetic valve 31 and the inlet of a C electromagnetic valve 33, the outlet of the A electromagnetic valve 31 is respectively connected (in parallel) to the input port A of a first filter 37, the cooling water or cooling liquid filtered by the filter element of the first filter 37 enters the interface 1 of the plate heat exchanger 22 through the filter element inner port P of the first filter 37, the cooling water or cooling liquid filtered by the filter element of the second filter 38 enters the interface 1 of the plate heat exchanger 22 through the filter element inner port P of the second filter 38, and the interface 2 of the plate heat exchanger 22 is respectively connected (connected in parallel) with the inlet of the B electromagnetic valve 32 and the outlet of the C electromagnetic valve 33, that is, the outlet of the C electromagnetic valve 33 is connected with the interface 2 of the plate heat exchanger 22; the interface 2 of the plate heat exchanger 22 is connected to the input end of the water supply device 21 after passing through the inlet and the outlet of the B electromagnetic valve 32, and the outlet of the B electromagnetic valve 32 is connected with the input end of the water supply device 21; the electromagnetic valve is a two-position two-way electromagnetic valve, preferably a pilot type two-position two-way electromagnetic valve.
In one embodiment, the output B of the first filter 37 and the output B of the second filter 38 are connected to the input end of the water supply device 21 after passing through the D solenoid valve 34, and the inlet of the D solenoid valve 34 is connected to the output B, C of the first filter 37 and the second filter 38 and the outlet of the solenoid valve 33 is connected to the input end of the water supply device 21.
The present invention is designed as a dual circulation loop.
The inlet 3 and the outlet 4 of the plate heat exchanger 22 are connected with the hydraulic system 24 to form a circulation loop.
The working principle of the invention is as follows:
during normal test (working state), the electromagnetic valve A31 is opened (electrified), the electromagnetic valve B32 is opened (electrified), the electromagnetic valve C33 is closed (power off), and the electromagnetic valve D34 is closed (power off); at this time, the cooling water or cooling liquid at the output end of the water supply device 21 passes through the electromagnetic valve a 31 and then enters the input ports a of the first filter 37 and the second filter 38, the cooling water or cooling liquid filtered by the filter elements of the first filter 37 and the second filter 38 passes through the inner filter element ports P of the first filter 37 and the second filter 38 and then is input into the interface 1 of the plate heat exchanger 22, the cooling water or cooling liquid passing through the plate heat exchanger 22 flows from the interface 2 of the plate heat exchanger 22 to the inlet of the electromagnetic valve B32, and the cooling water or cooling liquid returns to the input end of the water supply device 21 through the outlet of the electromagnetic valve B32, so as to form a cooling circulation loop; the electromagnetic valve is a two-position two-way electromagnetic valve, preferably a pilot type two-position two-way electromagnetic valve.
In the backwashing state (cleaning test), the electromagnetic valve A31 is closed (power off), the electromagnetic valve B32 is closed (power off), the electromagnetic valve C33 is opened (power on), and the electromagnetic valve D34 is opened (power on); at this time, the cooling water or cooling liquid at the output end of the water supply device 21 is connected to the interface 2 of the plate heat exchanger 22 after passing through the C solenoid valve 33, the cooling water or cooling liquid passing through the plate heat exchanger 22 flows from the interface 1 of the plate heat exchanger 22 to the filter element inner ports P of the first filter 37 and the second filter 38, after backflushing the filter elements of the first filter 37 and the second filter 38, the cooling water or cooling liquid respectively flows to the inlet of the D solenoid valve 34 through the output port B of the first filter 37 and the second filter 38, and then returns to the input end of the water supply device 21 through the outlet of the D solenoid valve 34, thereby forming a backflushing circulation loop.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (4)
1. A backwash cooling device of a hydraulic system, comprising: the cooling water or cooling liquid is filled in the water supply device (21), and the cooling water or cooling liquid is characterized in that the output end of the water supply device (21) is respectively connected with the inlet of the electromagnetic valve A (31) and the inlet of the electromagnetic valve C (33), the outlet of the electromagnetic valve A (31) is respectively connected with the input ports A of the plurality of filters, the cooling water or cooling liquid filtered by the filter element of the filter enters the interface 1 of the plate heat exchanger (22) through the filter element inner port P of the filter, the interface 2 of the plate heat exchanger (22) is respectively connected with the inlet of the electromagnetic valve B (32) and the outlet of the electromagnetic valve C (33), and the outlet of the electromagnetic valve B (32) is connected with the input end of the water supply device (21);
an output port B of the filter (37) is connected to an input end of the water supply device (21) after passing through a D electromagnetic valve (34), an inlet of the D electromagnetic valve (34) is connected with the output port B of the filter (37), and an outlet of the C electromagnetic valve (33) is connected with an input end of the water supply device (21);
the inlet 3 and the outlet 4 of the plate heat exchanger (22) are connected with a hydraulic system (24) to form a circulation loop.
2. The backwash cooling device of a hydraulic system according to claim 1, wherein the outlet of the electromagnetic valve A (31) is connected with the inlet A of the first filter (37) and the inlet A of the second filter (38), respectively, the cooling water or cooling liquid filtered by the filter element of the first filter (37) enters the port 1 of the plate heat exchanger (22) through the filter element inner port P of the first filter (37), the cooling water or cooling liquid filtered by the filter element of the second filter (38) enters the port 1 of the plate heat exchanger (22) through the filter element inner port P of the second filter (38), and the outlet of the electromagnetic valve C (33) is connected with the port 2 of the plate heat exchanger (22); and the interface 2 of the plate heat exchanger (22) is connected to the input end of the water supply device (21) through the inlet and the outlet of the B electromagnetic valve (32).
3. The backwash cooling device of a hydraulic system as claimed in claim 2, wherein the output port B of the first filter (37) and the output port B of the second filter (38) are connected to the input end of the water supply device (21) after passing through a D solenoid valve (34), and the inlet of the D solenoid valve (34) is connected with the output ports B, C of the first filter (37) and the second filter (38) and the outlet port of the solenoid valve (33) is connected with the input end of the water supply device (21).
4. A cleaning method of a backwashing cooling device adopting the hydraulic system of claims 1 to 3, characterized by comprising the following steps:
when the electromagnetic valve is in a working state, the electromagnetic valve A (31) is opened, the electromagnetic valve B (32) is opened, the electromagnetic valve C (33) is closed, and the electromagnetic valve D (34) is closed; at the moment, cooling water or cooling liquid at the output end of the water supply device (21) respectively enters the input ports A of the first filter (37) and the second filter (38) after passing through the electromagnetic valve A (31), the cooling water or cooling liquid filtered by the filter elements of the first filter (37) and the second filter (38) respectively enters the interface 1 of the plate heat exchanger (22) after passing through the inner openings P of the filter elements of the first filter (37) and the second filter (38), because the electromagnetic valve D (34) is powered off and is not conducted at the moment, the output ports B of the first filter (37) and the second filter (38) are in a closed state, the cooling water or cooling liquid passing through the plate heat exchanger (22) flows from the interface 2 of the plate heat exchanger (22) to the inlet of the electromagnetic valve B (32), and the cooling water or cooling liquid returns to the input end of the water supply device (21) through the outlet of the electromagnetic valve B (32), forming a cooling circulation loop;
when in a backwashing state, the electromagnetic valve A (31) is closed, the electromagnetic valve B (32) is closed, the electromagnetic valve C (33) is opened, and the electromagnetic valve D (34) is opened; at the moment, cooling water or cooling liquid at the output end of the water supply device (21) is connected to the interface 2 of the plate heat exchanger (22) after passing through the C electromagnetic valve (33), the cooling water or cooling liquid passing through the plate heat exchanger (22) flows from the interface 1 of the plate heat exchanger (22) to the inner openings P of the filter elements of the first filter (37) and the second filter (38), at the moment, the electromagnetic valve A (31) is powered off and is not conducted, the input ports A of the first filter (37) and the second filter (38) are in a closed state, after the filter elements of the first filter (37) and the second filter (38) are back flushed, the cooling water or the cooling liquid flows to the inlet of the D solenoid valve (34) through the output ports B of the first filter (37) and the second filter (38) respectively, and then returns to the input end of the water supply device (21) through the outlet of the D solenoid valve (34) to form a back flush circulation loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110371057.2A CN112999744A (en) | 2021-04-07 | 2021-04-07 | Back-flushing cooling device of hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110371057.2A CN112999744A (en) | 2021-04-07 | 2021-04-07 | Back-flushing cooling device of hydraulic system |
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| Publication Number | Publication Date |
|---|---|
| CN112999744A true CN112999744A (en) | 2021-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110371057.2A Pending CN112999744A (en) | 2021-04-07 | 2021-04-07 | Back-flushing cooling device of hydraulic system |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101493292A (en) * | 2008-01-24 | 2009-07-29 | 仁新节能环保设备(上海)有限公司 | Sewerage heat energy recovery system |
| CN203602635U (en) * | 2013-12-20 | 2014-05-21 | 山东四化环保节能工程有限公司 | Device for using waste heat of blast furnace slag flushing water |
| CN206235236U (en) * | 2016-08-23 | 2017-06-09 | 大唐鲁北发电有限责任公司 | Close cold water plate type heat exchanger online backflushing cleaning device |
| CN206377001U (en) * | 2016-11-29 | 2017-08-04 | 中国石油天然气股份有限公司 | One kind prevents compressor oil cooler recirculated water from restraining block system |
| CN109798804A (en) * | 2018-12-24 | 2019-05-24 | 贵州乌江清水河水电开发有限公司 | A kind of guide bearing cooler back-flushing method |
-
2021
- 2021-04-07 CN CN202110371057.2A patent/CN112999744A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101493292A (en) * | 2008-01-24 | 2009-07-29 | 仁新节能环保设备(上海)有限公司 | Sewerage heat energy recovery system |
| CN203602635U (en) * | 2013-12-20 | 2014-05-21 | 山东四化环保节能工程有限公司 | Device for using waste heat of blast furnace slag flushing water |
| CN206235236U (en) * | 2016-08-23 | 2017-06-09 | 大唐鲁北发电有限责任公司 | Close cold water plate type heat exchanger online backflushing cleaning device |
| CN206377001U (en) * | 2016-11-29 | 2017-08-04 | 中国石油天然气股份有限公司 | One kind prevents compressor oil cooler recirculated water from restraining block system |
| CN109798804A (en) * | 2018-12-24 | 2019-05-24 | 贵州乌江清水河水电开发有限公司 | A kind of guide bearing cooler back-flushing method |
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