CN208666528U - A kind of dome valve for air-transport system - Google Patents

A kind of dome valve for air-transport system Download PDF

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Publication number
CN208666528U
CN208666528U CN201820825868.9U CN201820825868U CN208666528U CN 208666528 U CN208666528 U CN 208666528U CN 201820825868 U CN201820825868 U CN 201820825868U CN 208666528 U CN208666528 U CN 208666528U
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China
Prior art keywords
valve
air
valve body
transport system
control unit
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CN201820825868.9U
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Chinese (zh)
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肖翰
张寿根
叶建山
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Zhejiang Gute Pneumatic Technology Co Ltd
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Zhejiang Gute Pneumatic Technology Co Ltd
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Abstract

The utility model provides a kind of dome valve for air-transport system, including valve body, control unit and alarm unit, one end of valve body is equipped with double-acting cylinder, one end of double-acting cylinder is provided with connecting shaft, one end of connecting shaft is provided with elastic cylindrical pin, the outer wall of elastic cylindrical pin is equipped with axis combination sealing lasso, the other end of valve body is provided with pneumatic actuator, one end of pneumatic actuator is provided with positioning sleeve, the bottom of pneumatic actuator and elastic cylindrical pin is provided with half ball stand, the inside of valve body is equipped with spool, the both ends of spool are provided with bracket, the both ends of bracket are mounted on temperature sensor.When the intracorporal data of valve generate excessive variation or abnormal data, start alarm and alarm unit, secondly body top is mounted on by leakproof baroceptor, prevent the air pressure of sealing ring from revealing, when sealing ring air pressure leakage, alarm and alarm unit are directly notified by control unit, convenient for repairing in time and maintenance.

Description

A kind of dome valve for air-transport system
Technical field
The utility model relates to pneumatic conveying field, specially a kind of dome valve for air-transport system.
Background technique
Pneumatic conveying has been widely used in the Bulk material in modern industry as the major way of pipeline, due to Its closure has very strong Function in Environmental, and pollution-free, safety is good, high reliablity;It is easily installed and realizes automatic control System;It is particularly suitable for powdery, graininess, threadiness and foliated material, is conducive to the secondary development of industrial waste It utilizes, achieves energy-saving and emission reduction purposes.Therefore, it is widely used by modern coal burning power industry and is comprehensively utilized to flyash On.And valve is the key equipment of air-transport system, therefore the performance of valve is to the transfer efficiency and its energy of air-transport system No operate normally has significant impact and decisive role, and problems with valves is to cause existing air-transport system master of problems Want one of reason.Large coal-fired power plant flyash pneumatic conveying speed is high, dust concentration is high, material is strong to the abrasiveness of system, It is particularly easy to cause the abrasion of valve, causes valve switch reduced performance, or even failure.Dome valve is that one kind is widely used in gas The valve of power transportation system, it can cut off flowing stream or static stock column into pressurized tank, be then shut off realization sealing, To guarantee that the pack completeness of pressurized tank is 100%, and the level-sensing device of sending cans need not be depended on, so control principle simply may be used It leans on.At present in the control of dome valve, generally manual operation, and dome valve air pressure inside can not be understood in operation And temperature, it can not be repaired in time when valve body breaks down, influence working efficiency.
Utility model content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the utility model provides a kind of dome valve for air-transport system, solves Mentioned above in the control of dome valve, generally manual operation, and can not understand inside dome valve in operation Air pressure and temperature can not repair in time when valve body breaks down, influence working efficiency.
(2) technical solution
In order to achieve the above object, the utility model is achieved by the following technical programs: one kind being used for pneumatic conveying system The dome valve of system, including valve body, control unit and alarm unit, one end of the valve body is equipped with double-acting cylinder, described double One end of active cylinder is provided with connecting shaft, and one end of the connecting shaft is provided with elastic cylindrical pin, the outer wall of the elastic cylindrical pin Axis combination sealing lasso is installed, the other end of the valve body is provided with pneumatic actuator, one end of the pneumatic actuator It is provided with positioning sleeve, the bottom of the pneumatic actuator and the elastic cylindrical pin is provided with half ball stand, the valve body Inside is equipped with spool, and the both ends of the spool are provided with bracket, and the both ends of the bracket are mounted on temperature sensor, institute The bottom for stating spool is provided with fixed column, and the top and bottom end of the fixed column are provided with thermal insulation layer, the fixed column it is interior Portion is equipped with baroceptor, and arc valve top is provided at the top of the spool, and the both ends at the top of the spool are mounted on close Seal, the bottom end of the sealing ring are provided with sealing film, and one end of the sealing film is provided with air flue, sets at the top of the valve body It is equipped with thermal insulation board, valve deck is provided on the thermal insulation board, leakproof baroceptor, the bullet are installed at the top of the valve deck It is mounted on alarm at the top of property straight pin and the pneumatic actuator, described control unit includes trigger unit, pneumatically holds Units and charge and discharge pneumatic module.
Preferably, the temperature sensor, the baroceptor are connected with the output end of the leakproof baroceptor The output end of described control unit, described control unit connects the alarm and the alarm unit.
Preferably, the output end of described control unit connects the pneumatic apparatus and described by the trigger unit The output end of charge and discharge pneumatic module, the pneumatic apparatus connects the double-acting cylinder, the output end of the charge and discharge pneumatic module Connect the sealing ring.
Preferably, the valve deck is fixedly connected on the top of the thermal insulation board, and the sealing ring is fixedly connected on the valve The top of core, the sealing film pass through the external cylinder of the air flue.
Preferably, the elastic cylindrical pin connects the double-acting cylinder by the connecting shaft, and the positioning sleeve passes through spiral shell Bolt is fixedly connected on the pneumatic actuator.
Preferably, the external PC terminal of the alarm unit, the temperature sensor are fixedly connected on the bracket.
Preferably, the charge and discharge pneumatic module includes inflation unit and deflating cells, and the charge and discharge pneumatic module described is pneumatically held Units and the trigger unit are connected into circuit unit.
Preferably, the arc valve top is made using nanometer toughening ceramic, is provided with control unit in the circuit unit.
Preferably, in use, first by valve body be mounted on gas-particle two-phase blow or the pipeline and tank body that convey on, the valve body At work, the pneumatic apparatus, the pneumatic apparatus are controlled by the trigger unit by described control unit The pneumatic actuator is controlled, when the valve body is closed, the sealing ring rotates 90 ° to off-position, is being connected to arriving for control unit After the signal of position, the double-acting cylinder makes the sealing membrane swelling of the sealing ring bottom, the sealing by the air flue It is filled with the compressed air of 0.6MPa in film, flexible deformation occurs, is allowed to fit closely at the top of the spool, realizes sealing, institute When stating valve body unlatching, air pressure relief is compressed in the sealing film, is bounced back by natural resiliency, then the double-acting cylinder delay It is acted after several seconds, the sealing ring rotates 90 ° and opens and closes torque since the sealing ring is not contacted with the sealing film to open position Small, abrasion is small, to improve service life, greatly reduces maintenance cost and time, the powder remained on dome is squeezed It is pressed in sealing spherical surface, abrasion when preventing from flowing to sealing ring and the valve body, the temperature sensor and the air pressure transmission Sensor is convenient for valve body temperature and air pressure described in real-time detection, by described control unit detection data, when the valve is intracorporal When data generate excessive variation or abnormal data, start the alarm and the alarm unit, secondly by described Leakproof baroceptor is mounted on the body top, prevents the air pressure of the sealing ring from revealing, when the sealing ring air pressure is let out When dew, alarm and alarm unit are directly notified by described control unit, repairs and safeguards in time convenient for staff.
Beneficial effect
The utility model provides a kind of dome valve for air-transport system, have it is following the utility model has the advantages that
1. the intelligence control system of this kind of dome valve, the inside of valve body is equipped with temperature sensor and baroceptor, valve Anti-leak baroceptor is installed at the top of body, when the intracorporal data of valve generate excessive variation or abnormal data, Start alarm and alarm unit, body top is secondly mounted on by leakproof baroceptor, prevents the air pressure of sealing ring from letting out Dew directly notifies alarm and alarm unit by control unit, robs in time convenient for staff when sealing ring air pressure leakage It repairs and safeguards.
2. the intelligence control system of this kind of dome valve when valve body is opened, compresses air pressure relief in sealing film, by itself bullet Property retraction, then double-acting cylinder delay the several seconds after act, sealing ring rotate 90 ° to open position, due to sealing ring and the sealing Film does not contact, and opening and closing torque is small, and abrasion is small, to improve service life, greatly reduces maintenance cost and time, remains in Powder on dome is compressed in sealing spherical surface, abrasion when preventing from flowing to sealing ring and valve body;The sealing ring of dome valve Insertion is mounted on valve body, is the component of unique and dome spool contact, even if wearing, is also convenient for dismounting maintenance;Sealing Contact surface and dome will appear slight mill in long-term production.
3. the intelligence control system of this kind of dome valve, valve body be mounted on gas-solid two want to blow or the pipeline and tank body that convey on, Traditional hard sealing valve can not the stable operation in the application environment for having both above-mentioned any mal-condition, dome valve can but be competent at. Dome valve in extensive industry has been more than successfully to be applied in 100 projects, and the design of dome valve is firm, can be competent at other valves without The work that method undertakes, every 10,000 operations must just be examined primary in standard application.
4. the intelligence control system of this kind of dome valve, arc valve top is made using nanometer toughening ceramic, has abrasion-proof corrosion-proof Corrosion, long service life are suitable for processing dusty gas and erosion loose unpacked material, and applied widely, double-acting cylinder is Using totally-enclosed revolution push-down straight-cylinder drive, in closing chamber realize track conversion, gyroscopic output, though dust concentration compared with Under high bad working environments, will not due to sealing element abrasion and lead to internal leakage, ensure that valve event reliability, septum secundum Hot plate can greatly increase the intracorporal heat resistance of valve.
5. the intelligence control system of this kind of dome valve, temperature sensor, baroceptor and leakproof baroceptor it is defeated Outlet connects control unit, and the output end connection alarm and alarm unit, the output end of control unit of control unit pass through touching Bill member connects pneumatic apparatus and charge and discharge pneumatic module, and the output end of pneumatic apparatus connects double-acting cylinder, inflation/deflation The output end of component connects sealing ring, is convenient for intelligent control valve body.
Detailed description of the invention
Fig. 1 is the overall structure diagram of utility model device ontology;
Fig. 2 is regional structure schematic diagram at the utility model A;
Fig. 3 is the utility model control module structural schematic diagram.
In figure: 1, valve body;2, connecting shaft;3, double-acting cylinder;4, axis combination sealing lasso;5, elastic cylindrical pin;6, gas Pressure sensor;7, pneumatic actuator;8, half ball stand;9, positioning sleeve;10, alarm;11, bracket;12, thermal insulation board;13, arc Valve top;14, spool;15, fixed column;16, thermal insulation layer;17, leakproof baroceptor;18, valve deck;19, temperature sensor;20, Sealing ring;21, air flue;22, film is sealed;23, control unit;24, alarm unit;25, pneumatic apparatus;26, trigger unit; 27, charge and discharge pneumatic module.
Specific embodiment
The embodiments of the present invention is described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein Same or similar label indicates same or similar element or element with the same or similar functions from beginning to end.Lead to below It crosses the embodiment being described with reference to the drawings to be exemplary, is only used for explaining the utility model, and should not be understood as practical to this Novel limitation.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", " length ", " width Degree ", " thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside", The orientation or positional relationship of the instructions such as " clockwise ", " counterclockwise " be based on the orientation or positional relationship shown in the drawings, be only for Convenient for description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have specifically Orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or implicitly indicates indicated technology The quantity of feature.Define " first " as a result, the feature of " second " can explicitly or implicitly include it is one or more The feature.The meaning of " plurality " is two or more in the description of the present invention, unless otherwise clearly specific It limits.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection;It can be mechanical connection, be also possible to be electrically connected or can mutually communicate;It can be directly connected, it can also be in Between medium be indirectly connected, can be the connection inside two elements or the interaction relationship of two elements.For this field For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood as the case may be.
In the present invention unless specifically defined or limited otherwise, fisrt feature the "upper" of second feature or it "lower" may include that the first and second features directly contact, and also may include that the first and second features are not direct contacts but lead to Cross the other characterisation contact between them.Moreover, fisrt feature includes above the second feature " above ", " above " and " above " One feature is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.First is special Sign is directly below and diagonally below the second feature including fisrt feature under the second feature " below ", " below " and " below ", or only Indicate that first feature horizontal height is less than second feature.
Following disclosure provides many different embodiments or example is used to realize the different structure of the utility model. In order to simplify the disclosure of the utility model, hereinafter the component of specific examples and setting are described.Certainly, they are only Example, and purpose does not lie in limitation the utility model.In addition, the utility model can in different examples repeat reference numerals And/or reference letter, this repetition are for purposes of simplicity and clarity, itself not indicate discussed various embodiments And/or the relationship between setting.In addition, the example of various specific techniques and material that the utility model provides, but this Field those of ordinary skill can be appreciated that the application of other techniques and/or the use of other materials.
The utility model embodiment provides a kind of dome valve for air-transport system, including valve body 1, control unit 23 With alarm unit 24, one end of valve body 1 is equipped with double-acting cylinder 3, and one end of double-acting cylinder 3 is provided with connecting shaft 2, connecting shaft 2 One end be provided with elastic cylindrical pin 5, the outer wall of elastic cylindrical pin 5 is equipped with axis combination sealing lasso 4, valve body 1 it is another End is provided with pneumatic actuator 7, and one end of pneumatic actuator 7 is provided with positioning sleeve 9, pneumatic actuator 7 and elastic cylindrical pin 5 Bottom is provided with half ball stand 8, and the inside of valve body 1 is equipped with spool 14, and the both ends of spool 14 are provided with bracket 11, bracket 11 both ends are mounted on temperature sensor 19, and the bottom of spool 14 is provided with fixed column 15, the top and bottom end of fixed column 15 It is provided with thermal insulation layer 16, the inside of fixed column 15 is equipped with baroceptor 6, and the top of spool 14 is provided with arc valve top 13, the both ends at 14 top of spool are mounted on sealing ring 20, and the bottom end of sealing ring 20 is provided with sealing film 22, seals the one of film 22 End is provided with air flue 21, and the top of valve body 1 is provided with thermal insulation board 12, and valve deck 18, the top of valve deck 18 are provided on thermal insulation board 12 Portion is equipped with leakproof baroceptor 17, and the top of elastic cylindrical pin 5 and pneumatic actuator 7 is mounted on alarm 10, controls Unit 23 includes trigger unit 26, pneumatic apparatus 25 and charge and discharge pneumatic module 27.
In use, first by valve body 1 be mounted on gas-solid two want to blow or the pipeline and tank body that convey on, valve body 1 at work, Pneumatic apparatus 25 is controlled by trigger unit 26 by control unit 23, pneumatic apparatus 25 controls pneumatic actuator, valve When body 1 is closed, sealing ring 20 rotates 90 ° to off-position, and after being connected to the signal in place of control unit 23, double-acting cylinder 3 passes through Air flue 21 expands the sealing film 22 of 20 bottom of sealing ring, seals the compressed air that 0.6MPa is filled in film 22, and elasticity occurs and becomes Shape is allowed to fit closely at the top of spool 14, realizes sealing, when valve body 1 is opened, compresses air pressure relief in sealing film 22, relies on Natural resiliency retraction, then double-acting cylinder 3 acts after the delay several seconds, and sealing ring 20 rotates 90 ° to open position, due to sealing ring 20 Do not contacted with sealing film 22, opening and closing torque is small, wear it is small, to improve service life, greatly reduce maintenance cost and when Between, remain in the powder on dome and is compressed in sealing spherical surface, abrasion when preventing from flowing to sealing ring 20 and valve body 1, temperature Spend sensor 19 and baroceptor 6 convenient for temperature and air pressure in real-time detection valve body 1, by 23 detection data of control unit, When the data in valve body 1 generate excessive variation or abnormal data, start alarm 10 and alarm unit 24, secondly 1 top of valve body is mounted on by leakproof baroceptor 17, prevents the air pressure of sealing ring 20 from revealing, when 20 air pressure of sealing ring is revealed When, alarm 10 and alarm unit 24 are directly notified by control unit 23, repairs and safeguards in time convenient for staff.
To sum up, the intelligence control system of this kind of dome valve, temperature sensor 19, baroceptor 6 and leakproof air pressure sensing The output end of device 17 connects control unit 23, the output end connection alarm 10 and alarm unit 24 of control unit 23, convenient for control Unit 23 processed receives temperature sensor 19 and baroceptor 17 detects signal, and compares with normal data, number in valve body 1 According to it is abnormal when, convenient for being alarmed by alarm 10 and alarm unit 24, be conducive to repair in time.
Secondly, the output end by control unit 23 connects pneumatic apparatus 25 and inflation/deflation group by trigger unit 26 Part 27 controls pneumatic apparatus 25 and charge and discharge pneumatic module 27 convenient for control unit 23, and the output end of pneumatic apparatus 25 connects Double-acting cylinder 3 is connect, the output end of charge and discharge pneumatic module 27 connects sealing ring 20.
Also, valve deck 18 is fixedly connected on the top of thermal insulation board 12, and thermal insulation board 12 is convenient for increasing heat resistance in valve body 1, Sealing ring 20 is fixedly connected on the top of spool 14, and sealing film 22 passes through air flue by the external cylinder of air flue 21, double-acting cylinder 3 21 expand the sealing film 22 of 20 bottom of sealing ring, seal the compressed air that 0.6MPa is filled in film 22, and flexible deformation occurs, makes With fitted closely at the top of spool 14, realize sealing, valve body 1 open when, sealing film 22 in compress air pressure relief, by itself bullet Property retraction, then double-acting cylinder 3 is delayed after the several seconds and acts, and sealing ring 20 rotates 90 ° to open position, due to sealing ring 20 and sealing Film 22 does not contact, and opening and closing torque is small, and abrasion is small, to improve service life, greatly reduces maintenance cost and time.
Also, elastic cylindrical pin 5 connects double-acting cylinder 3 by connecting shaft 2, and positioning sleeve 9 is bolted to connection in gas Dynamic actuator 7.
Also, the external PC terminal of alarm unit 24, convenient for the PC terminal for directly transmitting the information of 1 failure of valve body, temperature Sensor 19 is fixedly connected on bracket 11.
Also, charge and discharge pneumatic module 27 includes inflation unit and deflating cells, charge and discharge pneumatic module 27,25 and of pneumatic apparatus Trigger unit 26 is connected into circuit unit.
Also, arc valve top 13 is made using nanometer toughening ceramic, has abrasion and corrosion resistance, and long service life is applicable in It is applied widely in processing dusty gas and erosion loose unpacked material, control unit 23 is provided in circuit unit.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment Intrinsic element.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (8)

1. a kind of dome valve for air-transport system, including valve body (1), control unit (23) and alarm unit (24), Be characterized in that: one end of the valve body (1) is equipped with double-acting cylinder (3), and one end of the double-acting cylinder (3) is provided with company One end of axis (2), the connecting shaft (2) is provided with elastic cylindrical pin (5), and the outer wall of the elastic cylindrical pin (5) is equipped with axis use The other end of combination sealing lasso (4), the valve body (1) is provided with pneumatic actuator (7), and the one of the pneumatic actuator (7) End is provided with positioning sleeve (9), and the bottom of the pneumatic actuator (7) and the elastic cylindrical pin (5) is provided with half ball stand (8), the inside of the valve body (1) is equipped with spool (14), and the both ends of the spool (14) are provided with bracket (11), the branch The both ends of frame (11) are mounted on temperature sensor (19), and the bottom of the spool (14) is provided with fixed column (15), described solid The top and bottom end of fixed column (15) are provided with thermal insulation layer (16), and the inside of the fixed column (15) is equipped with baroceptor (6), it is provided with arc valve top (13) at the top of the spool (14), the both ends at the top of the spool (14) are mounted on sealing ring (20), the bottom end of the sealing ring (20) is provided with sealing film (22), and one end of sealing film (22) is provided with air flue (21), It is provided with thermal insulation board (12) at the top of the valve body (1), is provided with valve deck (18), the valve deck on the thermal insulation board (12) (18) it is equipped at the top of leakproof baroceptor (17), the top of the elastic cylindrical pin (5) and the pneumatic actuator (7) It is mounted on alarm (10), described control unit (23) includes trigger unit (26), pneumatic apparatus (25) and inflation/deflation Component (27).
2. a kind of dome valve for air-transport system according to claim 1, it is characterised in that: the temperature sensing Device (19), the baroceptor (6) connect described control unit (23) with the output end of the leakproof baroceptor (17), The output end of described control unit (23) connects the alarm (10) and the alarm unit (24).
3. a kind of dome valve for air-transport system according to claim 1, it is characterised in that: described control unit (23) output end connects the pneumatic apparatus (25) and the charge and discharge pneumatic module (27) by the trigger unit (26), The output end of the pneumatic apparatus (25) connects the double-acting cylinder (3), the output end of the charge and discharge pneumatic module (27) Connect the sealing ring (20).
4. a kind of dome valve for air-transport system according to claim 1, it is characterised in that: the valve deck (18) It is fixedly connected on the top of the thermal insulation board (12), the sealing ring (20) is fixedly connected on the top of the spool (14), institute It states sealing film (22) and passes through the air flue (21) external cylinder.
5. a kind of dome valve for air-transport system according to claim 1, it is characterised in that: the elastic cylinder It sells (5) and connects the double-acting cylinder (3) by the connecting shaft (2), the positioning sleeve (9) is bolted to connection described Pneumatic actuator (7).
6. a kind of dome valve for air-transport system according to claim 1, it is characterised in that: the alarm unit (24) external PC terminal, the temperature sensor (19) are fixedly connected on the bracket (11).
7. a kind of dome valve for air-transport system according to claim 1, it is characterised in that: the inflation/deflation group Part (27) includes inflation unit and deflating cells, the charge and discharge pneumatic module (27), the pneumatic apparatus (25) and the touching Bill member (26) is connected into circuit unit.
8. a kind of dome valve for air-transport system according to claim 7, it is characterised in that: the arc valve top (13) it is made using nanometer toughening ceramic, described control unit (23), the double-acting cylinder is provided in the circuit unit (3) totally-enclosed revolution push-down straight-cylinder is used.
CN201820825868.9U 2018-05-30 2018-05-30 A kind of dome valve for air-transport system Active CN208666528U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820825868.9U CN208666528U (en) 2018-05-30 2018-05-30 A kind of dome valve for air-transport system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820825868.9U CN208666528U (en) 2018-05-30 2018-05-30 A kind of dome valve for air-transport system

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CN208666528U true CN208666528U (en) 2019-03-29

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108561581A (en) * 2018-05-30 2018-09-21 浙江固特气动科技股份有限公司 A kind of intelligence control system for air-transport system dome valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108561581A (en) * 2018-05-30 2018-09-21 浙江固特气动科技股份有限公司 A kind of intelligence control system for air-transport system dome valve

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