LU504958B1 - Purging and anti-blocking device for pneumatic valve - Google Patents
Purging and anti-blocking device for pneumatic valve Download PDFInfo
- Publication number
- LU504958B1 LU504958B1 LU504958A LU504958A LU504958B1 LU 504958 B1 LU504958 B1 LU 504958B1 LU 504958 A LU504958 A LU 504958A LU 504958 A LU504958 A LU 504958A LU 504958 B1 LU504958 B1 LU 504958B1
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- Luxembourg
- Prior art keywords
- pipeline
- connecting flanges
- air
- purging
- valve body
- Prior art date
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- 238000010926 purge Methods 0.000 title claims abstract description 66
- 238000010438 heat treatment Methods 0.000 claims abstract description 78
- 230000007246 mechanism Effects 0.000 claims abstract description 33
- 239000000843 powder Substances 0.000 claims abstract description 16
- 238000004140 cleaning Methods 0.000 claims description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- 239000007787 solid Substances 0.000 description 11
- 238000012423 maintenance Methods 0.000 description 10
- 239000013078 crystal Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- B08B9/0321—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid
- B08B9/0328—Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing using pressurised, pulsating or purging fluid by purging the pipe with a gas or a mixture of gas and liquid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B5/00—Cleaning by methods involving the use of air flow or gas flow
- B08B5/02—Cleaning by the force of jets, e.g. blowing-out cavities
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
- F16K24/02—Devices, e.g. valves, for venting or aerating enclosures the enclosure being itself a valve, tap, or cock
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K24/00—Devices, e.g. valves, for venting or aerating enclosures
- F16K24/06—Devices, e.g. valves, for venting or aerating enclosures for aerating only
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K49/00—Means in or on valves for heating or cooling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K25/00—Details relating to contact between valve members and seats
- F16K25/02—Arrangements using fluid issuing from valve members or seats
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
Abstract
The present invention discloses a purging and anti-blocking device for a pneumatic valve, and the device includes: a pneumatic valve main body, with a pneumatic actuator and a valve body arranged on the pneumatic valve main body; two connecting flanges; a pipeline, specifically, the connecting flanges are arranged at ends of the pipeline, and the pipeline is connected to the valve body through the connecting flanges; a purging mechanism, which is connected to the connecting flanges; and a heating mechanism, which is connected to the purging mechanism. Compressed air enters an annular channel, and is blown into the valve body and the pipeline through vent holes so as to purge powders in the valve body and the pipeline, so that no powder is accumulated in the valve body and the pipeline.
Description
PURGING AND ANTI-BLOCKING DEVICE FOR PNEUMATIC VALVE LU504958
The present invention belongs to the technical field of pneumatic valves, in particular to a purging and anti-blocking device for a pneumatic valve.
Pneumatic valve, a valve to perform driving with a help of compressed air, can be used to control flows of air, water, steam, various corrosive media, mud, oil products, liquid metal and radioactive media; the pneumatic valve mainly uses the compressed air to drive movements of multiple groups of combined pneumatic pistons in an actuator, and transfer forces to cross beams and inner curved tracks so as to drive a hollow spindle to rotate, specifically, a compressed air chuck is conveyed to each cylinder to change air inlet and outlet positions and further change a rotation direction of the spindle; and according to requirements of rotating torques required by loads, a number of the cylinder can be adjusted to drive the valve to work.
The pneumatic valve is widely used in electric power enterprises; and the pneumatic valve is also used in many flues, ammonia supply pipelines and pulverized coal pipelines, and in this kind of solid working medium or a pipeline that is prone to solid crystallization, if an interior or two sides of the valve is blocked due to a circulation of working medium in the pipeline in a process of long-time use, a safe operation of an equipment may be threatened, and an internal structure of the pneumatic valve may be damaged to affect a normal use and a service life of the pneumatic valve. For an existing pneumatic valve, a pipeline where the existing pneumatic valve is located or an interior of the existing pneumatic valve is not protected by a purging device, and when a blockage happens, the existing pneumatic valve is required to be repaired by disassembly of the pipeline and the valve, so that maintenance and labor costs are high, and the pipeline and valve are damaged greatly by the disassembly of the pipeline and the valve and further a later equipment replacement cost is increased.
An objective of the present invention is to provide a purging and anti-blocking device for a pneumatic valve, so as to solve at least one of the problems raised in the above background.
In order to solve the above technical problems, the specific technical solutions of the present invention are as follows:
in some examples of the present application, a purging and anti-blocking device for 2 504958 pneumatic valve is provided, including: a pneumatic valve main body, specifically, a pneumatic actuator and a valve body are arranged on the pneumatic valve main body; connecting flanges, which are arranged at two ends of the valve body and fixedly connected to the valve body; a pipeline, specifically, the connecting flanges are arranged at ends of the pipeline, and the pipeline is connected to the valve body through the connecting flanges; a purging mechanism, which is connected to the connecting flanges, and inputs compressed air into the valve body and the pipeline through the connecting flanges so as to realize purging and cleaning of powders in the valve body and the pipeline; and a heating mechanism, which is connected to the purging mechanism and used for heating the compressed air input into the valve body and the pipeline.
Preferably, in the preferred examples of the purging and anti-blocking device for a pneumatic valve, an annular steel plate is arranged on and welded with an inner wall of each of the connecting flanges, an annular groove is arranged on the annular steel plate, air vents are evenly arranged along circumferential directions of the annular groove, and an air conveying groove is arranged on each of the connecting flanges and communicated with the annular groove.
Preferably, in the preferred examples of the purging and anti-blocking device for a pneumatic valve, after the connecting flanges of the valve body and the pipeline are connected, the annular grooves are butted to form an annular channel, and the air vents facing exteriors of the channel are arranged on two sides of the channel; the air conveying grooves are butted to form air conveying holes communicated with the annular channel, and the air conveying holes are communicated with the purging mechanism; and the compressed air is input into the annular channel through the air conveying holes, and then into the valve body and the pipeline through the air vents.
Preferably, in the preferred examples of the purging and anti-blocking device for a pneumatic valve, the pipeline includes: pipeline I, specifically, the connecting flanges are arranged at ends of the pipeline I, and the connecting flanges at the ends of the pipeline I are connected to the connecting flanges at an inlet end of the valve body through bolts; and pipeline II, specifically, the connecting flanges are arranged at ends of the pipeline II, and the connecting flanges at the ends of the pipeline II are connected to the connecting flanges at a 504958 outlet end of the valve body through the bolts.
Preferably, in the preferred examples of the purging and anti-blocking device for a pneumatic valve, the purging mechanism includes: an air pipe, specifically, a main air pipe and two branch air pipes are arranged, and output ports of the two branch air pipes are communicated with the air conveying holes formed by the connecting flanges connected to the valve body and the pipeline; an air source, which is communicated with an input port of the main air pipe and provides the valve body and the pipeline with the compressed air for purging; and a control valve, which is arranged on the main air pipe and used for controlling a conveying amount of the compressed air.
Preferably, in the preferred examples of the purging and anti-blocking device for a pneumatic valve, the heating mechanism includes: a heating box, specifically, through holes corresponding to each other are arranged on opposite side walls of the heating box, and the main air pipe penetrates through the heating box through the through holes; a heating pipe, which is arranged on an inner wall of the heating box and used for heating the compressed air conveyed by the main air pipe in the heating box; and a temperature sensor, which is arranged in the heating box and used for monitoring a temperature in the heating box.
Preferably, in the preferred examples of the purging and anti-blocking device for a pneumatic valve, the heating mechanism is externally connected to a power supply, and the power supply supplies power to the heating mechanism.
Preferably, in the preferred examples of the purging and anti-blocking device for a pneumatic valve, the device further includes a controller, specifically, the controller is electrically connected to the control valve, the heating pipe and the temperature sensor and used for controlling the control valve to adjust the conveying amount of the compressed air, monitoring the temperature in the heating box through the temperature sensor, and controlling a heating temperature of the heating pipe.
According to the above technical solutions, compared with the prior art, the present invention has the following beneficial effects: high-pressure airflows are conveyed into the valve body and the pipeline through the air conveying holes on the connecting flanges so as to purge the powders in the valve body and the pipeline, so that the powders accumulated in the valve 504958 body and the pipeline can be purged, the valve can be easily closed, and valve damage or material overflow due to material blocking can be prevented, and when the valve is closed, the compressed air can enter two ends of the valve body to ensure daily cleaning and maintenance; the compressed air enters the annular channel through the air conveying holes on the connecting flanges so that the compressed air is evenly distributed in the annular channel of the connecting flanges, and then the compressed air is blown into the valve body and the pipeline through a circle of air vents at bottoms of the annular grooves so as to purge the powders in the valve body and the pipeline so that no powder is accumulated in the valve body and the pipeline; and the heating box and heating pipe are used to heat the compressed air entering the valve and the pipeline, and the heated air is released from the air vents to purge the valve, thus preventing the solid crystals from being generated at the valve and cleaning the generated solid crystals.
Compared with the existing treatment method, the present invention has the advantages of simple device and operation, good practicability and better effect, not only maintaining the stable operation of the device, but also saving the cleaning cost. To sum up, the present invention has simple structure and easy processing, effectively solves a blockage problem of a conveying valve, ensures a stable operation of the valve, and greatly reduces an equipment maintenance cost. The purging and anti-blocking device for a pneumatic valve provided by the present invention has the following specific beneficial effects: 1. The device can be made at a low cost on site, and the valve or the pipeline can be periodically purged and cleaned by the compressed air, so as to prevent blockages of the pneumatic valve and the pipeline and improve an operation safety of the pipeline and the valve. 2. The device can reduce a possibility of pipeline and valve blockage, reduce costs of equipment maintenance and replacement, thus saving a maintenance cost by CNY 30,000/year. 3. Under a condition of blockage, the compressed air can be used to dredge the pipeline and the valve, thus shortening fault handling time and improving safety, quality and efficiency. 4. Replacing valve wear replacement with normal purging can reduce the costs of valve and pipeline replacement, thus saving a replacement cost by CNY 5,000-15,000/piece.
In order to explain technical solutions of the examples of the present invention or the prior 504958 art more clearly, the attached drawings needed in the descriptions of the examples or the prior art will be briefly introduced below. Obviously, the attached drawings in the following descriptions are some examples of the present invention, and other attached drawings can be obtained 5 according to these attached drawings without creative efforts for those ordinary skilled in the art.
FIG.1 is a structural schematic diagram for a whole device in an example of the present invention;
FIG.2 is a schematic sectional diagram for the whole device in an example of the present invention;
FIG.3 is a structural schematic diagram for a connecting flange in an example of the present invention; and
FIG.4 is a structural schematic diagram for two connecting flanges connected in an example of the present invention.
Among them: 1-pneumatic valve main body; 2-connecting flange; 3-pipeline; 4-purging mechanism; 5-heating mechanism; and 6-controller; 11-pneumatic actuator; and 12-valve body; 21-annular steel plate; 22-annular groove; 23-air vent; 24-air conveying groove; 25-air conveying hole; and 26-annular channel; 31-pipeline I, and 32-pipeline IT, 41-air pipe; 42-air source; and 43-control valve; 51-heating box; 52-heating pipe; and 53-temperature sensor.
The specific embodiments of the present invention will be described in further detail below with reference to the attached drawings and examples. The following examples are used to illustrate the present invention, but are not used to limit the scope of the present invention.
In the descriptions of the application, it is understood that the azimuth or positional relationship indicated by the terms "center", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" is based on the azimuth or positional relationship shown in the attached drawings, and is only for the convenience of describing the application and simplifying the descriptions, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated ina 504958 specific orientation, so it cannot be understood as limiting the application.
The terms "first" and "second" are only used for describing, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, the features defined as "first" and "second" may include one or more of these features explicitly or implicitly. In the descriptions of the application, "plural" means two or more, unless otherwise specified.
In the descriptions of the application, it is noted that unless otherwise specified and limited, the terms "installation" and "connection" are broadly understood, for example, they can be fixed connection, detachable connection or integrated; they can be mechanical connection or electrical connection; they can be direct connection, or indirect connection through an intermediary; or they can be the internal connection of two elements. For those ordinary skilled in the art, specific meanings of the above terms in the application can be understood according to specific situations.
In order to better understand the objective, structures and functions of the present invention, the present invention are described in further detail with the attached drawings.
As shown in FIGs. 1-4, a purging and anti-blocking device for a pneumatic valve according to an example of the present application is described, including: a pneumatic valve main body 1, specifically, a pneumatic actuator 11 and a valve body 12 are arranged on the pneumatic valve main body 1; connecting flanges 2, which are arranged at two ends of the valve body 12 and fixedly connected to the valve body 12; a pipeline 3, specifically, the connecting flanges 2 are arranged at ends of the pipeline 3, and the pipeline 3 is connected to the valve body 12 through the connecting flanges 2; a purging mechanism 4, which is connected to the connecting flanges 2, and inputs compressed air into the valve body 12 and the pipeline 3 through the connecting flanges 2 so as to realize purging and cleaning of powders in the valve body 12 and the pipeline 3; and a heating mechanism 5, which is connected to the purging mechanism 4 and used for heating the compressed air input into the valve body 12 and the pipeline 3 so as to realize purging and cleaning of solid crystals in the valve body 12 and the pipeline 3.
Specifically, the pneumatic actuator 11 is a driving mechanism of the pneumatic valve in the prior art; the pneumatic actuator 11 controls opening and closing of the valve; and the pneumatic actuator 11 receives pneumatic signal output by a pneumatic controller or a valve positioner and 504958 converts the pneumatic signal into a corresponding linear displacement of a push rod so as to push the pneumatic valve to move. The pipeline 3 is communicated with two ends of the valve body 12 of the pneumatic valve through the connecting flanges 2; the purging mechanism 4 is communicated with the connecting flanges 2 through the air pipe, and the purging mechanism 4 conveys the compressed air into the pipeline 3 and the valve through the connecting flanges 2 so as to realize purging and cleaning of powders in the valve body 12 and the pipeline 3 and prevent the powders from accumulating in the valve body 12 and the pipeline 3 and causing blockage; and the heating mechanism 5 heats the compressed air input into the valve body 12 and the pipeline 3, and the heated compressed air can heat and purge the solid crystals in the valve body 12 and the pipeline 3, so that the solid crystals can be melted to realize cleaning of the solid crystals in the valve body 12 and the pipeline 3.
As shown in FIG.3, in order to further optimize the above technical solutions, an annular steel plate 21 is arranged on and welded with an inner wall of each of the connecting flanges 2, an annular groove 22 is arranged on the annular steel plate 21, air vents 23 are evenly arranged along circumferential directions of the annular groove 22. An air conveying groove 24 is arranged on each of the connecting flanges 2 and communicated with the annular groove 22 and used for inputting the compressed air into the annular groove 22, and then inputting the compressed air into the valve body 12 and the pipeline 3 through the air vents 23.
As shown in FIG.4, in order to further optimize the above technical solutions, after the connecting flanges 2 of the valve body 12 and the pipeline 3 are connected, the annular grooves 22 are butted to form an annular channel 26, and the air vents 23 facing exteriors of the channel are arranged on two sides of the channel; the air conveying grooves 24 are butted to form air conveying holes 25 communicated with the annular channel 26, and the air conveying holes 25 are communicated with the purging mechanism 4; and the compressed air is input into the annular channel 26 through the air conveying holes 25, and then into the valve body 12 and the pipeline 3 through the air vents 23.
In order to further optimize the technical solutions, the pipeline 3 includes: pipeline I 31, specifically, the connecting flanges 2 are arranged at ends of the pipeline I 31, the connecting flanges at the ends of the pipeline I 31 are connected to the connecting flanges 2 at an inlet end of the valve body 12 through bolts, and the connecting flanges 2 on the pipeline I
31 correspond to the air conveying grooves 24 and the annular grooves 22 of the connectid&/504958 flanges 2 at the inlet end of the valve body 12; and pipeline II 32, specifically, the connecting flanges 2 are arranged at ends of the pipeline II 32, the connecting flanges at the ends of the pipeline II 32 are connected to the connecting flanges 2 at an outlet end of the valve body 12 through the bolts, and the connecting flanges 2 on the pipeline II 32 correspond to the air conveying grooves 24 and the annular grooves 22 of the connecting flanges 2 at the outlet end of the valve body 12.
It is noted that after the connecting flanges 2 at the inlet and outlet ends of the valve body 12 are correspondingly connected to the connecting flanges 2 at the ends of the pipeline I 31 and the pipeline II 32, the connecting flanges 2 of the valve body 12 are communicated with the air conveying holes 25 and the annular channels 26 of the connecting flanges 2 at the ends of the pipeline 3 so as to form air conveying channels; air vents 23 are arranged on the connecting flanges 2, and the two air conveying channels are respectively located at the two ends of the valve body 12 so as to purge and clean the two ends of the valve in the valve body 12, and complete the purging and cleaning when the valve is closed; and when compressed air is input, the compressed air can be blown into the pipeline 3 at the same time, thus purging and cleaning the pipeline 3 and preventing the pipeline 3 from being blocked.
As shown in FIG.2, in order to further optimize the above technical solutions, the purging mechanism 4 includes: an air pipe 41, specifically, a main air pipe and two branch air pipes are arranged, and output ports of the two branch air pipes are communicated with the air conveying holes 25 formed by the connecting flanges 2 connected to the valve body 12 and the pipeline 3; an air source 42, which is communicated with an input port of the main air pipe and provides the valve body 12 and the pipeline 3 with the compressed air for purging; and a control valve 43, which is arranged on the main air pipe and used for controlling a conveying amount of the compressed air.
Specifically, the air source 42 is communicated with the input port of the main air pipe, and the main air pipe is communicated with two branch air pipes, one of the branch air pipe is communicated with the air conveying holes 25 formed by the connecting flanges 2 connected to the pipeline I 31 and the inlet end of the valve body 12, and the other is communicated with the air conveying holes 25 formed by the connecting flanges 2 connected to the pipeline II 32 and the outlet end of the valve body 12; and the air source 42 provides compressed air for purging. 904998 and cleaning the valve body 12 and the pipeline 3 through the air pipe 41, the conveying amount of the compressed air of the air source 42 is adjusted by controlling the control valve 43, and the greater the conveying amount of compressed air, the greater the purging intensity and the better the cleaning effect.
As shown in FIG.2, in order to further optimize the above technical solutions, the heating mechanism 5 includes: a heating box 51, specifically, through holes corresponding to each other are arranged on opposite side walls of the heating box 51, and the main air pipe penetrates through the heating box 51 through the through holes; a heating pipe 52, which is arranged on an inner wall of the heating box 51 and used for heating the compressed air conveyed by the main air pipe in the heating box 51; and a temperature sensor 53, which is arranged in the heating box 51 and used for monitoring a temperature in the heating box 51.
It is noted that solid crystals are easily generated in the pipeline 3 and the valve, and can be melted under the action of high temperature, so when a heating mechanism is installed on the air pipe 41 conveying compressed air so as to heat the compressed air, the solid crystals in the pipeline 3 and the valve can be cleaned; and a temperature sensor 53 is installed in the heating box 51 to detect a heating temperature of the heating pipe 52, and the heating temperature of the heating pipe 52 can be adjusted according to the temperature detected by the temperature sensor 53.
In order to further optimize the above technical solutions, the heating mechanism 5 is externally connected to a power supply, and the power supply supplies power to the heating mechanism 5.
It is noted that when the device is used to clean the powders in the valve and pipeline 3, the compressed air is not required to be heated, specifically, the heating pipe 52 can be turned off or the power supply can be cut off to stop heating by the heating mechanism 5.
In order to further optimize the above technical solutions, the purging and anti-blocking device for a pneumatic valve further includes a controller 6, specifically, the controller 6 is electrically connected to the control valve 43, the heating pipe 52 and the temperature sensor 53 and used for controlling the control valve 43 to adjust the conveying amount of the compressed air, monitoring the temperature in the heating box 51 through the temperature sensor 53, and 504958 controlling a heating temperature of the heating pipe 52.
Specifically, the controller 6 controls the air conveying amount of the control valve 43, so that when it is used for daily periodic purging, cleaning and maintenance, a proper amount of compressed air can be input, and when the valve and the pipeline 3 are blocked, the control valve 43 can be further opened to increase the air conveying amount to the valve and the pipeline 3; and the temperature sensor 53 transmits temperature information to the controller 6, workers can adjust the heating temperature of the heating pipe 52 according to the temperature information detected by the temperature sensor 53 so as to ensure a proper heating temperature and prevent an excessive low or high heating temperature.
Working principle: according to situations of the valve and the pipeline 3, the controller 6 controls the control valve 43 to adjust the conveying amount of the compressed air, and the compressed air is conveyed into the valve body 12 and the pipeline 3 through the air conveying holes 25 on the connecting flanges 2 so as to purge the powders in the valve body 12 and the pipeline 3, so that the powders accumulated in the valve body 12 and the pipeline 3 can be purged, the valve can be easily closed, and valve damage or material overflow due to material blocking can be prevented, and when the valve is closed, the compressed air can enter two ends of the valve body 12 to ensure daily cleaning and maintenance; the compressed air enters the annular channel 26 through the air conveying holes 25 on the connecting flanges 2 so that the compressed air is evenly distributed in the annular channel 26 of the connecting flanges 2, and then the compressed air is blown into the valve body 12 and the pipeline 3 through a circle of air vents 23 at bottoms of the annular grooves 22 so as to purge the powders in the valve body 12 and the pipeline 3 so that no powder is accumulated in the valve body 12 and the pipeline 3; and the heating box 51 and heating pipe 52 are used to heat the compressed air entering the valve and pipeline 3, the temperature sensor 53 transmits temperature information to the controller 6, workers can adjust the heating temperature of the heating pipe 52 according to the temperature information detected by the temperature sensor 53 so as to ensure a proper heating temperature and prevent an excessive low or high heating temperature, and the heated air is released from the air vents 23 to purge the valve and the pipeline 3, thus preventing the solid crystals from being generated at the valve. Compared with the existing treatment method, the present invention has the advantages of simple device and operation, good practicability and better effect, not ont 904958 maintaining the stable operation of the device, but also saving the cleaning cost. To sum up, the present invention has simple structure and easy processing, effectively solves a blockage problem of a conveying valve, ensures a stable operation of the valve, and greatly reduces an equipment maintenance cost.
The purging and anti-blocking device for a pneumatic valve provided by the present invention has the following specific beneficial effects: 1. The device can be made at a low cost on site, and the valve or pipeline can be periodically purged and cleaned by the compressed air, so as to prevent blockages of the pneumatic valve and the pipeline and improve an operation safety of the pipeline and the valve. 2. The device can reduce a possibility of pipeline and valve blockage, reduce costs of equipment maintenance and replacement, thus saving a maintenance cost by CNY 30,000/year. 3. Under a condition of blockage, the compressed air can be used to dredge the pipeline and the valve, thus shortening fault handling time and improving safety, quality and efficiency. 4. Replacing valve wear replacement with normal purging can reduce the costs of valve and pipeline replacement, thus saving a replacement cost by CNY 5,000-15,000/piece.
Each example in the specification is described in a progressive way; each example focuses on differences from other examples, and the same and similar parts between examples can be referred to each other. For a device disclosed in an example, the device corresponds to a method disclosed in the example, so descriptions of the device are simple and relevant points can be found in the descriptions of a corresponding method part.
The above descriptions of the disclosed examples enable those skilled in the art to make or use the present invention. Many modifications to these examples are obvious to those skilled in the art, and general principles defined herein can be implemented in other examples without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the examples shown herein, but meets the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. À purging and anti-blocking device for a pneumatic valve, comprising: a pneumatic valve main body (1), wherein a pneumatic actuator (11) and a valve body (12) are arranged on the pneumatic valve main body (1); connecting flanges (2), which are arranged at two ends of the valve body (12) and fixedly connected to the valve body (12); a pipeline (3), wherein the connecting flanges (2) are arranged at ends of the pipeline (3), and the pipeline (3) 1s connected to the valve body (12) through the connecting flanges (2); a purging mechanism (4), which is connected to the connecting flanges (2), and inputs compressed air into the valve body (12) and the pipeline (3) through the connecting flanges (2) so as to realize purging and cleaning of powders in the valve body (12) and the pipeline (3); and a heating mechanism (5), which is connected to the purging mechanism (4) and used for heating the compressed air input into the valve body (12) and the pipeline (3).
2. The purging and anti-blocking device for a pneumatic valve according to claim 1, wherein an annular steel plate (21) is arranged on and welded with an inner wall of each of the connecting flanges (2), an annular groove (22) is arranged on the annular steel plate (21), air vents (23) are evenly arranged along circumferential directions of the annular groove (22), and an air conveying groove (24) is arranged on each of the connecting flanges (2) and communicated with the annular groove (22).
3. The purging and anti-blocking device for a pneumatic valve according to claim 2, wherein after the connecting flanges (2) of the valve body (12) and the pipeline (3) are connected, the annular grooves (22) are butted to form an annular channel (26), and the air vents (23) facing exteriors of the channel are arranged on two sides of the channel; the air conveying grooves (24) are butted to form air conveying holes (25) communicated with the annular channel (26), and the air conveying holes (25) are communicated with the purging mechanism (4); and the compressed air is input into the annular channel (26) through the air conveying holes (25), and then into the valve body (12) and the pipeline (3) through the air vents (23).
4. The purging and anti-blocking device for a pneumatic valve according to claim 1, wherein the pipeline (3) comprises: pipeline I (31), wherein the connecting flanges (2) are arranged at ends of the pipeline I (31), and the connecting flanges at the ends of the pipeline I (31) are connected to the connecting flanges (2) at an inlet end of the valve body (12) through bolts; and pipeline II (32), wherein the connecting flanges (2) are arranged at ends of the pipeline II
(32), and the connecting flanges at the ends of the pipeline II (32) are connected to thé/504958 connecting flanges (2) at an outlet end of the valve body (12) through the bolts.
5. The purging and anti-blocking device for a pneumatic valve according to claim 1, wherein the purging mechanism (4) comprises: an air pipe (41), wherein a main air pipe and two branch air pipes are arranged, and output ports of the two branch air pipes are communicated with the air conveying holes (25) formed by the connecting flanges (2) connected to two ends of the valve body (12) and the pipeline (3); an air source (42), which is communicated with an input port of the main air pipe and provides the valve body (12) and the pipeline (3) with the compressed air for purging; and a control valve (43), which is arranged on the main air pipe and used for controlling a conveying amount of the compressed air.
6. The purging and anti-blocking device for a pneumatic valve according to claim 1, wherein the heating mechanism (5) comprises: a heating box (51), wherein through holes corresponding to each other are arranged on opposite side walls of the heating box (51), and the main air pipe penetrates through the heating box (51) through the through holes; a heating pipe (52), which is arranged on an inner wall of the heating box (51) and used for heating the compressed air conveyed by the main air pipe in the heating box (51); and a temperature sensor (53), which is arranged in the heating box (51) and used for monitoring a temperature in the heating box (51).
7. The purging and anti-blocking device for a pneumatic valve according to claim 1, further comprising a controller (6), wherein the controller (6) is electrically connected to the control valve (43), the heating pipe (52) and the temperature sensor (53) and used for controlling the control valve (43) to adjust the conveying amount of the compressed air, monitoring the temperature in the heating box (51) through the temperature sensor (53), and controlling a heating temperature of the heating pipe (52).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310646426.3A CN116838845A (en) | 2023-05-31 | 2023-05-31 | Pneumatic valve sweeps, anti-blocking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| LU504958B1 true LU504958B1 (en) | 2024-02-19 |
Family
ID=88171508
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| LU504958A LU504958B1 (en) | 2023-05-31 | 2023-08-18 | Purging and anti-blocking device for pneumatic valve |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN116838845A (en) |
| LU (1) | LU504958B1 (en) |
-
2023
- 2023-05-31 CN CN202310646426.3A patent/CN116838845A/en active Pending
- 2023-08-18 LU LU504958A patent/LU504958B1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| CN116838845A (en) | 2023-10-03 |
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| Date | Code | Title | Description |
|---|---|---|---|
| FG | Patent granted |
Effective date: 20240219 |