CN108941078B - Automatic back flushing device and pressure detection sampling system comprising same - Google Patents
Automatic back flushing device and pressure detection sampling system comprising same Download PDFInfo
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- CN108941078B CN108941078B CN201810730502.8A CN201810730502A CN108941078B CN 108941078 B CN108941078 B CN 108941078B CN 201810730502 A CN201810730502 A CN 201810730502A CN 108941078 B CN108941078 B CN 108941078B
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- 238000005070 sampling Methods 0.000 title claims abstract description 86
- 238000011010 flushing procedure Methods 0.000 title claims abstract description 35
- 238000001514 detection method Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 215
- 238000004146 energy storage Methods 0.000 claims abstract description 152
- 238000003860 storage Methods 0.000 claims abstract description 136
- 238000001914 filtration Methods 0.000 claims abstract description 46
- 238000005192 partition Methods 0.000 claims description 34
- 238000007789 sealing Methods 0.000 claims description 33
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000014759 maintenance of location Effects 0.000 abstract description 3
- 238000007711 solidification Methods 0.000 abstract description 3
- 230000008023 solidification Effects 0.000 abstract description 3
- 238000011001 backwashing Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 12
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- 239000010935 stainless steel Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 230000000717 retained effect Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto
- B08B9/02—Cleaning pipes or tubes or systems of pipes or tubes
- B08B9/027—Cleaning the internal surfaces; Removal of blockages
- B08B9/032—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/10—Devices for withdrawing samples in the liquid or fluent state
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
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Abstract
The invention discloses an automatic back flushing device which comprises a filtering module and a water storage and energy storage module which are connected with each other, wherein when the pressure in the medium sampling device is higher than the pressure in the filtering module, water in a medium is filtered out through the filtering module and is conveyed to the water storage and energy storage module for storage, and when the pressure in the medium sampling device is lower than the pressure in the filtering module, the stored water is conveyed to the medium sampling device through the water storage and energy storage module, and the medium sampling device is flushed. The invention realizes automatic back flushing of the medium sampling device under the conditions of no water source and no external power supply. The invention also discloses a pressure detection sampling system comprising the automatic backwashing device, which effectively avoids the phenomena of medium retention, solidification and blockage in the medium sampling device, and the detection of the pressure of the medium is more stable and accurate.
Description
Technical Field
The invention relates to the technical field of high-concentration medium sampling, in particular to an automatic back flushing device and a pressure detection sampling system comprising the same.
Background
With the rapid development of the steel industry in China, a large number of mine (steel) enterprises have the problem of long-distance conveying of high-concentration ore pulp by pipelines, so that leakage and leakage point detection exist, the most common mode of leakage detection at present is to judge leakage and leakage point detection in pipeline conveying by detecting medium pressure in the pipelines, and the method has the advantages of being very large, but has the defect that the pressure detection sampling system is easy to retain, solidify and block when stopping production or decompressing. The pressure detection sampling system is generally a sampling short pipe with a flange or is composed of the sampling short pipe, a cutting ball valve and a flange, after the pipeline conveys ore pulp to stop, the ore pulp in the sampling pipe (or the sampling pipe and the cutting valve) is easy to stay, solidify and block, and even if the pipeline is stopped to be wholly flushed with water, the residual ore pulp in the sampling pipe is difficult to flush, so that inaccurate pressure detection is caused after the next starting, and even the pressure is not detected.
At present, in the prior art, a water pipe is laid along with a conveying pipeline to be used as a flushing water source, or the water pipe is manually cleaned one by one before the next starting, so that the media such as ore pulp and the like retained in the sampling pipe are cleaned. But can cause great pressure or trouble to the production and a pressurized water source must be provided for flushing.
Disclosure of Invention
In view of the above problems, the present invention aims to provide an automatic back flushing device and a pressure detection sampling system including the same, so as to solve the problem that a pressurized water source is required to be arranged in the prior art to flush a medium sampling device.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
one aspect of the invention provides an automatic back flushing device, which comprises a filter module and a water storage and energy storage module which are connected with each other, wherein the filter module is connected with a medium sampling device, when the pressure in the medium sampling device is higher than the pressure in the filter module, water in a medium is filtered out through the filter module and is conveyed to the water storage and energy storage module for storage, and when the pressure in the medium sampling device is lower than the pressure in the filter module, the stored water is conveyed to the medium sampling device through the filter module by the water storage and energy storage module for flushing the medium sampling device.
Preferably, the filtering module comprises a filter core barrel and a filtering water cavity barrel, the filter core barrel is positioned inside the filtering water cavity barrel, a medium channel is formed inside the filter core barrel and is connected with the medium sampling device, a filtering water cavity is formed between the filter core barrel and the filtering water cavity barrel, and the filtering water cavity is connected with the water storage and energy storage module.
Preferably, the water storage and energy storage module comprises a water storage and energy storage barrel, a partition plate and an energy storage component, wherein the partition plate is in sealing connection with the water storage and energy storage barrel, the water storage and energy storage barrel is divided into a water storage cavity and an energy storage cavity, the energy storage component is positioned in the energy storage cavity, and the energy storage component slides along the wall surface of the water storage and energy storage barrel by pushing the partition plate, so that water stored in the water storage cavity is conveyed into the filtering module.
Preferably, the water storage and energy storage module further comprises a sealing piece, wherein the sealing piece is connected to the partition plate and is sealed with the wall surface of the water storage and energy storage barrel.
Preferably, the water storage and energy storage module further comprises a guide seat and a sealing ring, wherein the guide seat is fixedly connected with the partition plate, the partition plate slides along the water storage and energy storage cylinder along with the guide seat, and the sealing ring is installed in a closed cavity formed by the partition plate, the guide seat and the water storage and energy storage cylinder.
Preferably, the water storage and energy storage module further comprises a limiting piece, wherein the limiting piece is located in the energy storage cavity and used for limiting sliding displacement of the partition plate along the water storage and energy storage barrel.
Preferably, the energy storage component is a spring, one end of the spring is fixed on the partition plate, and the other end of the spring is fixed on the bottom wall surface of the water storage and energy storage barrel.
Preferably, a vent hole is arranged on the wall surface of the water storage and energy storage barrel, and the vent hole is communicated with the energy storage cavity and the outside air.
Preferably, the automatic back flushing device further comprises a bracket, and the water storage and energy storage module is mounted on the bracket.
Another aspect of the present invention provides a pressure detection sampling system, including an automatic back flushing device and a medium sampling device as described above, the filter module is connected to the medium sampling device, a pressure sensor is disposed above the filter module, the medium sampling device is connected to a medium conveying pipeline, and is used for extracting a medium, and detecting a medium pressure by the pressure sensor, and when the medium pressure decreases or stops conveying the medium, the medium sampling device is flushed by the automatic back flushing device.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the automatic back flushing device realizes automatic back flushing of the medium sampling device without water source and external power supply, avoids the condition that the medium sampling device can be flushed only by arranging a pressurized water source in the prior art, saves manpower and material resources and saves cost.
According to the pressure detection sampling system, when the pressure of the medium is reduced or the medium is stopped to be conveyed, the medium sampling device is automatically backwashed in real time, power is not required to be provided by a water source and the outside, the phenomena of medium retention, solidification and blockage in the medium sampling device are effectively avoided, the detection of the pressure of the medium is more stable and accurate, and therefore whether the pipeline conveying is leaked or not and the positions of leakage points can be effectively and accurately judged, the overhaul efficiency of the conveying pipeline when the pipeline is leaked is greatly improved, and the continuous and stable operation of a medium pipeline conveying production line is ensured.
Drawings
FIG. 1 is a schematic view of the construction of an automatic backwash assembly according to the present invention;
FIG. 2 is a schematic diagram of a filter module according to the present invention;
FIG. 3 is a schematic diagram of a water storage and energy storage module according to the present invention;
FIG. 4 is an enlarged schematic view of a portion A of FIG. 3;
FIG. 5 is a schematic diagram of a pressure detection sampling system according to the present invention.
Detailed Description
Embodiments of the present invention will be described below with reference to the accompanying drawings. Those skilled in the art will recognize that the described embodiments may be modified in various different ways, or combinations thereof, without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive in scope. Furthermore, in the present specification, the drawings are not drawn to scale, and like reference numerals denote like parts.
This embodiment is described in detail below with reference to fig. 1 to 5.
Fig. 1 is a schematic structural diagram of an automatic back flushing device according to the present invention, as shown in fig. 1, the automatic back flushing device according to the present invention includes a filter module 4 and a water storage and energy storage module 9, the filter module 4 and the water storage and energy storage module 9 are connected to each other through a pipeline, the filter module 4 is connected to a medium sampling device 3, the medium sampling device 3 is connected to a medium conveying pipeline 1, when the pressure in the medium sampling device 3 is greater than the pressure in the filter module 4 (the medium 2 fills the conveying pipeline), water in the medium 2 is filtered out through the filter module 4 and is conveyed to the water storage and energy storage module 9 for storage, and when the pressure in the medium sampling device 3 is less than the pressure in the filter module 4 (the medium pressure reduces or stops conveying the medium 2), the stored water is conveyed to the medium sampling device 3 through the water storage and energy storage module 9 for flushing the medium sampling device 3. The invention realizes automatic back flushing of the medium sampling device 3 under the condition of no water source and no external power supply, and realizes the purposes of water taking, water storage, energy release, water drainage and back flushing by utilizing the filtering module 4 and the water storage energy storage module 9. Wherein the medium 2 can be high-concentration pulp, and the automatic back flushing device can avoid the high-concentration pulp from being detained in the medium sampling device 3.
Fig. 2 is a schematic structural view of a filtration module in the present invention, as shown in fig. 2, the filtration module 4 includes a filter cartridge 42 and a filter cartridge 41, the filter cartridge 42 is located inside the filter cartridge 41, a medium channel is formed inside the filter cartridge 42 and connected with the medium sampling device 3, a filtration water cavity 5 is formed between the filter cartridge 42 and the filter cartridge 41, the filtration water cavity 5 is connected with the water storage and energy storage module 9, the filtration water is conveyed to the water storage and energy storage module 9 through the filtration water cavity 5, and when back flushing is performed, the filtration water enters the medium channel formed by the filter cartridge 42 through the filtration water cavity 5, and the medium sampling device 3 connected with the filtration water is flushed. Wherein, the filter element cylinder 42 is used for filtering water in the medium 2, a stainless steel filter element can be used, and the stainless steel filter element has bidirectional property. According to the diameter of solid particles in the medium 2, the porosity of the stainless steel filter element is selected, and when the medium 2 is high-concentration ore pulp, the porosity of the stainless steel filter element is generally 30 mu m.
In one embodiment of the present invention, the filter module 4 includes a first flange 43 and a second flange 45, the filter module 4 and the medium sampling device 3 are in flange connection through the second flange 45, and the filter cartridge 42 and the filter water chamber cartridge 41 in the filter module 4 are welded and fixed with the first flange 43 and the second flange 45, so that a medium channel communicating with the medium sampling device 3 is formed inside the filter cartridge 42, and a sealed filter water chamber 5 is formed inside the filter water chamber cartridge 41.
Fig. 3 is a schematic structural diagram of a water storage and energy storage module in the present invention, as shown in fig. 3, the water storage and energy storage module 9 includes a water storage and energy storage barrel 96, a partition plate 93 and an energy storage member 98, the partition plate 93 is connected with a wall surface of the water storage and energy storage barrel 96 in a sealing manner, the water storage and energy storage barrel 96 is divided into a water storage cavity 912 and an energy storage cavity 913, the water storage cavity 912 is connected with the filtration module 4 through a communication pipeline 8, the energy storage member 98 is located in the energy storage cavity 913 and is used for storing energy, when the media sampling device 3 is backwashed, power is provided, the energy storage member 98 slides along the wall surface of the water storage and energy storage barrel 96 by pushing the partition plate 93, and water stored in the water storage cavity 912 is conveyed into the filtration module 4. For example, a rail may be provided on the wall surface of the water storage and energy storage tube 96 such that the partition 93 slides along the rail. When the pressure in the medium sampling device 3 is greater than the pressure in the filtering water cavity 5, the filtering water is stored in the water storage cavity 912, under the action of the filtering water pressure in the water storage cavity 912, the baffle plate 93 slides along the wall surface of the water storage and energy storage cylinder 96 towards the direction of the compression energy storage cavity 913, the energy is stored in the energy storage component 98 in advance, no external power is needed, and the balance is achieved until the pressure in the medium sampling device 3 is equal to the pressure in the filtering water cavity 5; when the pressure in the medium sampling device 3 is smaller than the pressure in the filtering water cavity 5, the energy storage member 98 releases energy, and the partition plate 93 is pushed to slide along the wall surface of the water storage and energy storage cylinder 96 towards the direction of the compressed water storage cavity 912, so that the filtered water in the water storage cavity 912 is conveyed into the medium sampling device 3 through the filtering module 4, and the medium sampling device 3 is automatically backwashed without providing a water source from the outside until the pressure in the medium sampling device 3 is equal to the pressure in the filtering water cavity 5 again, or the energy in the energy storage member 98 is completely released.
The filtering water cavity cylinder 41 and the water storage cavity 912 are connected with each other through a communicating pipeline 8, a valve 7 is arranged on the communicating pipeline 8, and whether the filtering module 4 and the water storage and energy storage module 9 are communicated or not is controlled through the valve 7. In an alternative embodiment of the present invention, a first connecting pipe 44 is installed on the wall surface of the filtering water chamber cylinder 41 (the first connecting pipe 44 can be welded and fixed on the wall surface of the filtering water chamber cylinder 41), a second connecting pipe 91 is installed on the wall surface of the water storage and energy storage cylinder 96 (the second connecting pipe 91 can be welded and fixed on the wall surface of the water storage and energy storage cylinder 96), a valve 7 is installed between the first connecting pipe 44 and the connecting pipe 8, movable joints are installed at two ends of the connecting pipe 8, and the connecting pipe 8 is respectively connected with the first connecting pipe 44 and the second connecting pipe 91 in a threaded manner, so that the filtering water chamber cylinder 41 and the water storage and energy storage chamber 912 are communicated.
In an alternative embodiment of the invention, the energy storage member 98 may be a spring having one end secured to the diaphragm 93 and the other end secured to the bottom wall 910 of the water storage and energy storage cartridge 96. A short rod is arranged at the center of the bottom wall surface 910 of the water storage and energy storage barrel 96, and the other end of the spring is fixed on the short rod, so that the tail part of the spring is positioned at the center of the water storage and energy storage barrel 96, and the subsequent overhaul or replacement of sealing equipment and the like are facilitated. The water and energy storage cylinder 96 is threadably connected to the cylinder bottom wall surface 910.
In order to ensure that the gas pressure in the energy storage cavity is constant, so that the energy storage member 98 works stably, power is provided when back flushing is performed, in one embodiment of the present invention, a vent hole 99 is installed on the wall surface of the water storage and energy storage barrel 96, and the vent hole 99 communicates the energy storage cavity 913 with the outside air. The vent 99 may be threadably coupled to the wall of the accumulator cartridge 96. A screen-shaped grate plate may be installed inside the vent holes 99 to prevent foreign objects from entering the energy storage cavity 913.
In order to stabilize the water storage and energy storage module against vibration, the automatic backwash device preferably further comprises a support frame 911, the water storage and energy storage module 9 being mounted on the support frame 911. The bracket 911 may include a pair of bracket bodies arranged in opposite directions, the bracket bodies are semicircular, the water storage and energy storage cylinder 96 in the water storage and energy storage module 9 is located on the semicircular bracket bodies, and opposite-top bolts are arranged at two ends of the bracket bodies, so that the water storage and energy storage cylinder 96 is fixed on the bracket 911 through the opposite-top bolts, and the stability of the water storage and energy storage cylinder 96 is enhanced.
In one embodiment of the present invention, the water storage and energy storage module 9 further includes a limiting member 97, where the limiting member 97 is located in the energy storage cavity 913 and is used to limit the sliding displacement of the partition 93 along the water storage and energy storage cylinder 96, so as to prevent the energy storage member 98 from being damaged when the filtered water pressure in the water storage cavity 912 is too high, and meanwhile, improve the pressure overload capability of the water storage and energy storage module 9. The limiting members 97 may be limiting rings disposed on the inner wall surface of the water storage and energy storage cylinder 96, or may be a plurality of limiting members 97 uniformly distributed along the inner wall surface, depending on the shape of the water storage and energy storage cylinder 96. The limiting piece 97 is fixed with the water storage and energy storage barrel 96 through bolts.
As shown in fig. 3 and 4, in an alternative embodiment of the present invention, the water storage and energy storage module 9 further includes a sealing plate 92, where the sealing plate 92 is connected to the partition 93 and can slide along the wall surface of the water storage and energy storage cylinder 96 along with the partition 93, and the sealing plate 92 is closely contacted with the wall surface of the water storage and energy storage cylinder 96 and seals with the wall surface of the water storage and energy storage cylinder 96, so as to seal the water storage chamber 912 from the energy storage chamber 913. Wherein, sealing piece 92 and baffle 93 can be fixed through the bolt, and the material of sealing piece 92 is according to the nature selection of filtering water in the medium and confirm. For high concentration pulp media, the sealing plate 92 is made of soft rubber and has a thickness of about 20 mm.
In an alternative embodiment of the present invention, the water storage and energy storage module 9 further includes a guide seat 94 and a sealing ring 95, the guide seat 94 is fixedly connected with the partition plate 93, the partition plate 93 slides along the water storage and energy storage barrel 96 along with the guide seat 94, and the sealing ring 95 is installed in a closed cavity formed by the partition plate 93, the guide seat 94 and the water storage and energy storage barrel 96. According to the shape of the water storage and energy storage cylinder 96 in the water storage and energy storage module, the guide seat 94 can be annular, closely contacts with the wall surface of the water storage and energy storage cylinder 96 and is welded and fixed with the partition plate 93. And, the one end that the guide holder 94 kept away from baffle 93 is about 20mm apart from the baffle to make no matter whether the filtered water pressure in the water storage chamber 912 and the thrust of energy storage member 98 are even can keep baffle 93 perpendicular with the wall of retaining energy storage cylinder 96. The sealing ring 95 can be annular and closely contacted with the wall surface of the water storage and energy storage barrel 96, so that the water storage cavity 912 and the energy storage cavity 913 are sealed. Specifically, the material of the seal ring 95, typically soft rubber, may be selected according to the nature of the filtered water in the medium.
In an alternative embodiment of the present invention, the water storage and energy storage module 9 further includes a sealing plate 92, a guide seat 94 and a sealing ring 95, where the sealing plate 92 is connected to the partition plate 93 and is in tight contact with the wall surface of the water storage and energy storage cylinder 96, the guide seat 94 is fixedly connected to the partition plate 93, and the sealing ring 95 is installed in a closed cavity formed by the partition plate 93, the guide seat 94 and the water storage and energy storage cylinder 96. The sealing piece 92 is tightly contacted with the wall surface of the water storage and energy storage barrel 96 to form a seal, so that the primary seal of the water storage cavity 912 and the energy storage cavity 913 is realized, the sealing ring 95 is annular and is tightly contacted with the wall surface of the water storage and energy storage barrel 96, and the secondary seal of the water storage cavity 912 and the energy storage cavity 913 is realized. The sealing plate 92, the guide seat 94 and the sealing ring 95 are driven by the partition plate 93 to move left and right along the water storage and energy storage barrel 96 along with the pressure change of the filtered water in the water storage cavity 912 and the thrust change of the energy storage component 98, so that the circulation process of storing and releasing energy for back flushing is completed.
FIG. 5 is a schematic diagram of a pressure detecting and sampling system according to the present invention, and as shown in FIG. 5, the pressure detecting and sampling system according to the present invention includes: the automatic back flushing device and the medium sampling device 3 are described above, wherein the filter module 4 is connected with the medium sampling device 3, the pressure sensor 6 is arranged above the filter module 4, the medium sampling device 3 is connected with the medium conveying pipeline 1 and is used for extracting the medium 2, the pressure sensor 6 is used for detecting the pressure of the medium, and when the pressure of the medium is reduced or the medium is stopped to be conveyed, the medium sampling device 3 is flushed through the automatic back flushing device. Wherein the pressure sensor 6 is a diaphragm type pressure sensor. The invention can effectively avoid the phenomena of retention, solidification and blockage of ore pulp media in the pressure detection sampling device, so that the pressure detection of the media is more stable and accurate, and the leakage and the position of a leakage point are effectively judged if the pipeline transportation is leaked, thereby greatly improving the maintenance efficiency when the pipeline transportation is leaked. Meanwhile, power and water source are not required to be provided from the outside, manual intervention is not required, investment and energy sources can be saved, and manpower is reduced.
In one embodiment of the invention, the medium sampling device 3 is a short pipe connected with a flange, and is connected with the filter module 4 through the flange, and the short pipe is connected with the medium conveying pipeline 1.
The working principle and the process of the pressure detection sampling system are described in detail by taking the application of the pressure detection sampling system in the long-distance conveying of the high-concentration ore pulp pipeline as an example.
When the high-concentration ore pulp fills the conveying pipeline (the ore pulp pressure is greater than the filtering water pressure), filtering backwash water is sent to the water storage and energy storage module 9 through the filtering module 4, so that the water storage capacity in the water storage and energy storage module 9 is increased, the pressure is increased, and the energy storage spring is compressed to store energy until the pressure of the high-concentration ore pulp is balanced when the pressure of the high-concentration ore pulp is equal to the filtering backwash water pressure; when the pressure of the high-concentration ore pulp in the conveying pipe is reduced or the conveying of the ore pulp is stopped, the energy storage spring continuously supplies energy, filtered backwash water is flushed into the medium sampling device 3 through the filter module 4, the medium sampling device 3 is flushed, the high-concentration ore pulp retained in the medium sampling device 3 is diluted, and meanwhile, the high-concentration ore pulp is pushed into the ore pulp conveying pipe by the pressure of the filtered backwash water, so that backwash is completed. And under different working states of pipeline conveying, the pressure detection sampling system reciprocally circulates the process.
In the filter module 4, two processes of water intake and back flushing are performed. Specifically, the water intake process: the water in the high-concentration ore pulp is filtered by the stainless steel filter core barrel 42 and enters the filtering water cavity barrel 41 under the pressure effect, and enters the water storage and energy storage module 9 through the communication pipeline 8. And (3) back flushing: when the pressure of the high-concentration ore pulp is reduced or the high-concentration ore pulp stops being conveyed, the water storage and energy storage module 9 provides a pressure water source to enter the filtering water cavity 5 through the communicating pipeline 8, the pressure water source acts on the high-concentration ore pulp retained in the medium sampling device 3 through the stainless steel filter element cylinder 42, the high-concentration ore pulp retained in the medium sampling device 3 is diluted under the pressure and dilution effects, and meanwhile, the high-concentration ore pulp is pushed into the ore pulp conveying pipeline by the pressure to complete the back flushing process, and the stainless steel filter element cylinder 42 is back flushed in the back flushing process to complete self-cleaning, so that the filtering capability of the high-concentration ore pulp is maintained.
In the water storage and energy storage module 9, a water storage and energy storage process and a back flushing process are performed. Specifically, the water storage and energy storage process comprises the following steps: the filtered water conveyed by the filter module 4 enters the water storage cavity 912 through the communication pipeline 8, along with the continuous input of the filtered water into the water storage cavity 912 by the filter module 4, the water pressure in the water storage cavity 912 is increased, the sealing plate 92, the partition plate 93, the guide seat 94 and the sealing ring 95 are pushed to move integrally to the energy storage cavity 913 provided with the energy storage spring, the water storage quantity in the water storage cavity 912 is increased, the pressure is increased, the energy storage spring is compressed, the stored energy is increased, when the pressure of the high-concentration ore pulp in the filter module 4 is the same as the pressure of the backwash filtered water in the filter water cavity 5, the water storage quantity in the water storage cavity 912 of the water storage energy storage device is maximum, the pressure is maximum, the compression strength of the energy storage spring is maximum, and the stored energy also reaches maximum, thereby completing the water storage and energy storage process; and (3) back flushing: when the pressure of the high-concentration ore pulp is reduced or the high-concentration ore pulp stops conveying, the energy storage spring of the water storage and energy storage device releases energy, the sealing plate 92, the partition plate 93, the guide seat 94 and the sealing ring 95 are pushed to integrally move towards the water storage cavity 912, and backwash filtered water with pressure is continuously supplied to the filter module 4 until the pressure of the high-concentration ore pulp in the filter module 4 is the same as the pressure of the filtered water in the filter water cavity 5 again or the energy storage spring energy is released (spring reset), and the backwash process is completed.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The automatic back flushing device is characterized by comprising a filter module and a water storage and energy storage module which are connected with each other, wherein the filter module is connected with a medium sampling device, the medium sampling device is connected with a medium conveying pipeline, when the medium is filled in the conveying pipeline to enable the pressure in the medium sampling device to be larger than the pressure in the filter module, water in the medium is filtered out through the filter module and is conveyed to the water storage and energy storage module to be stored, and when the pressure of the medium is reduced or the conveying of the medium is stopped to enable the pressure in the medium sampling device to be smaller than the pressure in the filter module, the stored water is conveyed to the medium sampling device through the filter module to be flushed;
the filter module comprises a first flange and a second flange, the filter module is in flange connection with the medium sampling device through the second flange, and a filter core barrel and a filter water cavity barrel in the filter module are welded and fixed with the first flange and the second flange, so that a medium channel communicated with the medium sampling device is formed inside the filter core barrel, and meanwhile, a sealed filter water cavity is formed in the filter water cavity barrel.
2. The automatic backwash device according to claim 1, wherein the filter module comprises a filter cartridge and a filter cartridge, the filter cartridge is located inside the filter cartridge, a medium channel is formed inside the filter cartridge and connected with the medium sampling device, a filter cartridge is formed between the filter cartridge and the filter cartridge, and the filter cartridge is connected with the water storage and energy storage module.
3. The automatic backwash device according to claim 1, wherein the water storage and energy storage module comprises a water storage and energy storage cylinder, a partition plate and an energy storage member, the partition plate is in sealing connection with the water storage and energy storage cylinder to divide the water storage and energy storage cylinder into a water storage cavity and an energy storage cavity, the energy storage member is located in the energy storage cavity, and the energy storage member pushes the partition plate to slide along the wall surface of the water storage and energy storage cylinder to convey water stored in the water storage cavity into the filter module.
4. The automatic backwash device of claim 3, wherein the water storage and energy storage module further comprises a sealing sheet connected to the separator plate and sealing with the wall surface of the water storage and energy storage cartridge.
5. The automatic backwash device according to claim 3 or 4, wherein the water storage and energy storage module further comprises a guide seat and a sealing ring, the guide seat is fixedly connected with the partition plate, the partition plate slides along the water storage and energy storage barrel along with the guide seat, and the sealing ring is installed in a closed cavity formed by the partition plate, the guide seat and the water storage and energy storage barrel.
6. The automatic backwash device of claim 3, wherein the water storage and energy storage module further comprises a limiting member positioned in the energy storage cavity for limiting sliding displacement of the diaphragm along the water storage and energy storage cartridge.
7. The automatic backwash device according to claim 3, wherein the energy storage member is a spring, one end of the spring is fixed to the partition plate, and the other end of the spring is fixed to a bottom wall surface of the water storage and energy storage cylinder.
8. The automatic backwash device according to claim 3, wherein a vent hole is installed on a wall surface of the water storage and energy storage cylinder, and the vent hole communicates the energy storage cavity with the outside air.
9. The automatic backwash device of claim 1 further comprising a support on which the water storage and energy storage module is mounted.
10. A pressure detection sampling system, comprising an automatic back flushing device according to any one of claims 1-9 and a media sampling device, wherein the filtration module is connected with the media sampling device, a pressure sensor is arranged above the filtration module, the media sampling device is connected with a media conveying pipeline and is used for extracting media, the pressure sensor is used for detecting the pressure of the media, and when the pressure of the media is reduced or the conveying of the media is stopped, the media sampling device is flushed by the automatic back flushing device.
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| CN111420076B (en) * | 2020-05-07 | 2021-01-29 | 夏明静 | Gynaecology and obstetrics's surgical instruments degassing unit |
| CN114088505A (en) * | 2021-11-18 | 2022-02-25 | 光大水务科技发展（南京）有限公司 | Pretreatment device system of water treatment water quality detection instrument and working method thereof |
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