CN105546129A - Rainproof and anti-shockwave valve - Google Patents

Rainproof and anti-shockwave valve Download PDF

Info

Publication number
CN105546129A
CN105546129A CN201610061201.1A CN201610061201A CN105546129A CN 105546129 A CN105546129 A CN 105546129A CN 201610061201 A CN201610061201 A CN 201610061201A CN 105546129 A CN105546129 A CN 105546129A
Authority
CN
China
Prior art keywords
rainproof
shock wave
valve
valve disc
wave resistance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201610061201.1A
Other languages
Chinese (zh)
Other versions
CN105546129B (en
Inventor
徐世林
张猛
徐小茉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu juege Industry Group Co.,Ltd.
Original Assignee
JIANGSU DRAGON INDUSTRIES EQUIPMENT Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JIANGSU DRAGON INDUSTRIES EQUIPMENT Co Ltd filed Critical JIANGSU DRAGON INDUSTRIES EQUIPMENT Co Ltd
Priority to CN201610061201.1A priority Critical patent/CN105546129B/en
Publication of CN105546129A publication Critical patent/CN105546129A/en
Application granted granted Critical
Publication of CN105546129B publication Critical patent/CN105546129B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/223Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves with a plurality of valve members
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/224Details of bearings for the axis of rotation
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32Details

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Valves (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)

Abstract

The invention discloses a rainproof and anti-shockwave valve. The rainproof and anti-shockwave valve comprises a frame, a grill, closing valve leaves, water guiding grooves, water collecting grooves and a water guiding plate, wherein the frame comprises the water guiding grooves; the water guiding grooves are embedded in two sides of the frame; the grill is welded on the frame and the water collecting grooves; the water collecting grooves and the closing valve leaves form rainproof louvers; rainwater can flow into the water collecting grooves along the rainproof louvers; and the rainwater in the water collecting grooves flows to the bottom of the rainproof and anti-shockwave valve trough the water guiding grooves in the frame, and finally is drained out of the rainproof and anti-shockwave valve from the water guiding plate. The rainproof and anti-shockwave valve disclosed by the invention simultaneously has two functions including a rainproof function and an anti-shockwave function, the rainwater can be prevented from entering a building to etch equipment or air ducts, and the shockwave can also be stopped from entering the building to damage personnel and equipment.

Description

A kind of rainproof shock wave resistance valve
Technical field
The present invention relates to a kind of constructure ventilation special device, particularly relate to a kind of rainproof shock wave resistance valve.
Background technique
When carrying out safe design for some building, consideration is needed to avoid raindrop erosion and blast injury equipment.In order to avoid rainwater enters equipment such as building interior or airduct corrosion airduct, and prevent blast generation shock wave from causing damage to the equipment in building or personnel, need the installation of the hole inside and outside connecting building thing to have the shock wave resistance valve of rainproof function.When rainy, stormproof louvre can stop rainwater; When blasting, shock wave resistance valve can cut out instantaneously, cuts off connecting passage inside and outside building, avoids personnel and equipment in building to sustain damage.This shock wave resistance valve uses on rainwater frequently maybe may blast the building to attack etc., is specially one and has and prevent rainwater to enter in building or can keep out personnel and equipment in foreign impacts ripple infringement building in airduct.
The valve of prior art has certain defect, and 1, there is the valve of rainproof function, not there is shock wave resistance ability.2, there is shock wave resistance ability valve, not there is rainproof function.3, not there is the function that anti-Tornado Impact thing clashes into.
Summary of the invention
The object of the invention is: for the problems referred to above of the prior art, provide a kind of rainproof shock wave resistance valve, when not blasting, collecting annulus and valve disc form a whole stormproof louvre, can stop that rainwater enters in building or airduct.When blasting, closing valve disc by axle, connecting rod and spring Close All under shock wave, shock wave is stopped outside the building.When there is tornado, grid can keep out the shock of the alluvium that tornado is rolled.
Technological scheme of the present invention is:
A kind of rainproof shock wave resistance valve, comprise framework, grid, closedown valve disc, collecting annulus, water chute and water guide board, described framework comprises water chute, described water chute is embedded in two body side frames, described grid is welded on described framework and described collecting annulus, described collecting annulus and described closedown valve disc composition stormproof louvre, rainwater can flow into described collecting annulus along described stormproof louvre, in described collecting annulus rainwater again in framework water chute flow into bottom rainproof shock wave valve, finally discharge rainproof shock wave valve by described water guide board.
Further, described rainproof shock wave resistance valve also comprises axle, bearing, connecting rod, spring, together with described closedown valve disc welds with described axle, one end of described axle is connected with spring with described bearing, connecting rod, and all closedown valve discs are closed by described bearing, connecting rod and spring simultaneously and opened.
Further, described bearing is fixed on framework both sides by the bolt be welded on framework, described axle is fixed on described bearing and can rotates, described connecting rod is welded on axle, all axles can be rotated simultaneously, described spring one end is hooked on described connecting rod, and the other end of described spring is bolted on spring stack, and described closedown valve disc can be automatically reset by described spring action after closing.
Further, when normally ventilating, described closedown valve disc is in open mode, is connected to form stormproof louvre, realizes rainproof function with described collecting annulus; When explosion happens, shock wave is in described closedown valve disc, and described closedown valve disc turns to along described axle and closes completely, is blocked in by shock wave outside building; When shock wave disappears, described closedown valve disc, due to spring action, automatically reverts to full open position.
Further, described collecting annulus all adopts galvanized steel or stainless steel, and described collecting annulus two ends are welded on framework, and described collecting annulus two ends communicate with described water chute, and in described collecting annulus, rainwater can flow in described water chute.
Further, described closedown valve disc all adopts galvanized steel or stainless steel, and described closedown valve disc is by upper and lower two sheet material forming machine wings, and one end rivet interlacement of described closedown valve disc, the other end of described closedown valve disc is welded on axle.
Further, described grid all adopts galvanized steel or stainless steel, and described grid is welded by horizontal horizontal stripe and vertical bar criss-crossing, and the surrounding of described grid and framework and grid are weldingly connected.
Further, described rainproof shock wave resistance valve also comprises manger board, and described manger board is that dash is to avoid entering airduct bottom valve, and water is all discharged to bottom described rainproof shock wave resistance valve.
Advantage of the present invention is:
1, the beneficial effect achieved by the present invention is: realize a kind of valve and possess two kinds of functions simultaneously, can rainproof also can withstand impacts ripple, can prevent rainwater from entering building internal corrosion equipment or airduct, shock wave also can be stoped to enter damage personnel and equipment in building.
2, when there is tornado, grid can keep out the shock of the alluvium that tornado is rolled.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the schematic diagram of rainproof shock wave resistance valve disclosed in this invention at normal ventilation state.
Fig. 2 .1 and Fig. 2 .2 is the rainproof function schematic diagram for rainproof shock wave resistance valve disclosed in this invention.
Fig. 3 is the schematic diagram that rainproof shock wave resistance valve disclosed in this invention is subject to when shock wave impacts.
Fig. 4 is the right elevation schematic diagram of rainproof shock wave resistance valve disclosed in this invention.
Fig. 5 is the left view schematic diagram of rainproof shock wave resistance valve disclosed in this invention.
Fig. 6 is the plan view schematic diagram of rainproof shock wave resistance valve disclosed in this invention.
Fig. 7 is the plan view schematic diagram of rainproof shock wave resistance valve disclosed in this invention.
Fig. 8 is the three-dimensional icon intention of rainproof shock wave resistance valve disclosed in this invention.
Wherein:
1, framework 2, grid 3, closedown valve disc 4, collecting annulus 5, water guide board 6, water chute 7, manger board 8, axle 9, bearing 10, connecting rod 11, spring 12, spring stack 13, snap clasp
Embodiment
Below in conjunction with accompanying drawing and preferred implementation, technical solution of the present invention is described in detail.
If Fig. 1 is the schematic diagram of rainproof shock wave resistance valve disclosed in this invention at normal ventilation state, valve disc is in the state opened, the invention discloses and comprise framework 1, grid 2, close valve disc 3, collecting annulus 4, water chute 6 and water guide board 5, described framework comprises water chute 6, described water chute 6 is embedded in two body side frames 1, described grid 2 is welded on described framework 1 and described collecting annulus 4, described collecting annulus 4 and described closedown valve disc 3 form stormproof louvre, rainwater can flow into described collecting annulus 4 along described stormproof louvre, in described collecting annulus 4 rainwater again in framework 1 water chute 6 flow into bottom rainproof shock wave valve, finally discharge rainproof shock wave valve by described water guide board 5.Described rainproof shock wave resistance valve also comprises axle 8, bearing 9, connecting rod 10, spring 11, together with described closedown valve disc 3 welds with described axle 8, one end of described axle 8 is connected with spring 11 with described bearing 9, connecting rod 10, and all closedown valve discs 3 are closed simultaneously by described bearing 9, connecting rod 10 and spring 11 and open.
Further, described bearing 9 is fixed on framework 1 both sides by the bolt be welded on framework 1, described axle 8 is supported described bearing 9 and can be rotated, described connecting rod 10 is welded on axle 8, all axles 8 can be rotated simultaneously, described spring one end is hooked on described connecting rod, and the other end of described spring is bolted on spring stack, and described closedown valve disc can be acted on by the snap clasp 13 of described spring after closing and automatically reseting.
Further, when normally ventilating, described closedown valve disc 3 is in open mode, is connected to form stormproof louvre, realizes rainproof function with described collecting annulus 4; When explosion happens, shock wave is in described closedown valve disc 3, and described closedown valve disc 3 turns to along described axle 8 and closes completely, is blocked in by shock wave outside building; When shock wave disappears, described closedown valve disc 3, due to the effect of the snap clasp 13 of spring 11, automatically reverts to full open position.
In order to further waterproof and durable, described collecting annulus 4 all adopts galvanized steel or stainless steel, and described collecting annulus 4 two ends are welded on framework 1, and described collecting annulus 4 two ends communicate with described water chute 6, and in described collecting annulus 4, rainwater can flow in described water chute 6.
Further, described closedown valve disc 3 all adopts galvanized steel or stainless steel, and described closedown valve disc 3 is by upper and lower two sheet material forming machine wings, and one end rivet interlacement of described closedown valve disc 3, the other end of described closedown valve disc 3 is welded on axle 8.Like this, described shock wave resistance valve is convenient and practical, corrosion-resistant, waterproof.
Further, described grid 2 all adopts galvanized steel or stainless steel, and described grid 2 is welded by horizontal horizontal stripe and vertical bar criss-crossing, and surrounding and the framework 1 of described grid 2 are weldingly connected.When there is tornado, grid can keep out the shock of the alluvium that tornado is rolled.
Described rainproof shock wave resistance valve also comprises manger board 7, and described manger board 7 is that dash is to avoid entering airduct bottom valve, and water is all discharged to bottom described rainproof shock wave resistance valve.
Rainproof shock wave resistance valve disclosed in this invention can realize a kind of valve and possess two kinds of functions simultaneously, can rainproof also can withstand impacts ripple, can prevent rainwater from entering building internal corrosion equipment or airduct, shock wave also can be stoped to enter damage personnel and equipment in building.
The present invention still has numerous embodiments, all employing equivalents or equivalent transformation and all technological schemes formed, and all drops on protection scope of the present invention.

Claims (8)

1. a rainproof shock wave resistance valve, it is characterized in that: comprise framework, grid, closedown valve disc, water chute, collecting annulus and water guide board, described framework comprises water chute, described water chute is embedded in two body side frames, described grid is welded on described framework and described collecting annulus, described collecting annulus and described closedown valve disc composition stormproof louvre, rainwater can flow into described collecting annulus along described stormproof louvre, in described collecting annulus rainwater again in framework water chute flow into bottom rainproof shock wave valve, finally discharge rainproof shock wave valve by described water guide board.
2. rainproof shock wave resistance valve according to claim 1, it is characterized in that: described rainproof shock wave resistance valve also comprises axle, bearing, connecting rod, spring, together with described closedown valve disc welds with described axle, one end of described axle is connected with spring with described bearing, connecting rod, and all closedown valve discs are closed by described bearing, connecting rod and spring simultaneously and opened.
3. rainproof shock wave resistance valve according to claim 2, it is characterized in that: described bearing is fixed on framework both sides by the bolt be welded on framework, described axle is fixed on described bearing and can rotates, described connecting rod is welded on axle, all axles can be rotated simultaneously, described spring one end is hooked on described connecting rod, and the other end of described spring is bolted on spring stack, and described closedown valve disc can be automatically reset by described spring action after closing.
4. rainproof shock wave resistance valve according to claim 3, is characterized in that: when normally ventilating, and described closedown valve disc is in open mode, is connected to form stormproof louvre, realizes rainproof function with described collecting annulus; When explosion happens, shock wave is in described closedown valve disc, and described closedown valve disc turns to along described axle and closes completely, is blocked in by shock wave outside building; When shock wave disappears, described closedown valve disc, due to spring action, automatically reverts to full open position.
5. rainproof shock wave resistance valve according to claim 4, it is characterized in that: described collecting annulus all adopts galvanized steel or stainless steel, described collecting annulus two ends are welded on framework and grid, described collecting annulus two ends communicate with described water chute, and in described collecting annulus, rainwater can flow in described water chute.
6. rainproof shock wave resistance valve according to claim 4, it is characterized in that: described closedown valve disc all adopts galvanized steel or stainless steel, described closedown valve disc is by upper and lower two sheet material forming machine wings, one end rivet interlacement of described closedown valve disc, the other end of described closedown valve disc is welded on axle.
7. rainproof shock wave resistance valve according to claim 4, it is characterized in that: described grid all adopts galvanized steel or stainless steel, described grid is welded by horizontal horizontal stripe and vertical bar criss-crossing, and the surrounding of described grid and framework and collecting annulus are weldingly connected.
8. rainproof shock wave resistance valve according to claim 1, is characterized in that: described rainproof shock wave resistance valve also comprises manger board, and described manger board is that dash is to avoid entering airduct bottom valve, and water is all discharged to bottom described rainproof shock wave resistance valve.
CN201610061201.1A 2016-01-28 2016-01-28 A kind of rain-proof shock wave resistance valve Active CN105546129B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610061201.1A CN105546129B (en) 2016-01-28 2016-01-28 A kind of rain-proof shock wave resistance valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610061201.1A CN105546129B (en) 2016-01-28 2016-01-28 A kind of rain-proof shock wave resistance valve

Publications (2)

Publication Number Publication Date
CN105546129A true CN105546129A (en) 2016-05-04
CN105546129B CN105546129B (en) 2018-08-14

Family

ID=55825542

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610061201.1A Active CN105546129B (en) 2016-01-28 2016-01-28 A kind of rain-proof shock wave resistance valve

Country Status (1)

Country Link
CN (1) CN105546129B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106763821A (en) * 2017-02-23 2017-05-31 中国海洋石油总公司 A kind of weather tight butterfly valve
CN108302234A (en) * 2018-01-23 2018-07-20 浙江上风高科专风实业有限公司 A kind of chute type shock-wave resistant air vent valve
CN113757393A (en) * 2020-06-03 2021-12-07 约克广州空调冷冻设备有限公司 Protective valve

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201007160Y (en) * 2006-12-31 2008-01-16 徐印南 Multifunction antitheft window
GB2462466A (en) * 2008-08-08 2010-02-10 Portasilo Ltd Explosion blast protection apparatus
CN103574138A (en) * 2013-11-12 2014-02-12 南方风机股份有限公司 Security level low-leakage quick isolating valve
CN103806816A (en) * 2014-02-24 2014-05-21 李秋生 Ventilating shutter capable of being automatically closed
CN204139912U (en) * 2014-06-27 2015-02-04 深圳市瑞华建设股份有限公司 A kind of inclined-plane combined curtain wall type water-proof ventilation blind system
CN205479382U (en) * 2016-01-28 2016-08-17 江苏爵格工业设备有限公司 Rain -proof ripples valve that shocks resistance

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201007160Y (en) * 2006-12-31 2008-01-16 徐印南 Multifunction antitheft window
GB2462466A (en) * 2008-08-08 2010-02-10 Portasilo Ltd Explosion blast protection apparatus
CN103574138A (en) * 2013-11-12 2014-02-12 南方风机股份有限公司 Security level low-leakage quick isolating valve
CN103806816A (en) * 2014-02-24 2014-05-21 李秋生 Ventilating shutter capable of being automatically closed
CN204139912U (en) * 2014-06-27 2015-02-04 深圳市瑞华建设股份有限公司 A kind of inclined-plane combined curtain wall type water-proof ventilation blind system
CN205479382U (en) * 2016-01-28 2016-08-17 江苏爵格工业设备有限公司 Rain -proof ripples valve that shocks resistance

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106763821A (en) * 2017-02-23 2017-05-31 中国海洋石油总公司 A kind of weather tight butterfly valve
CN108302234A (en) * 2018-01-23 2018-07-20 浙江上风高科专风实业有限公司 A kind of chute type shock-wave resistant air vent valve
CN113757393A (en) * 2020-06-03 2021-12-07 约克广州空调冷冻设备有限公司 Protective valve
CN113757393B (en) * 2020-06-03 2023-10-10 约克广州空调冷冻设备有限公司 Protective valve

Also Published As

Publication number Publication date
CN105546129B (en) 2018-08-14

Similar Documents

Publication Publication Date Title
CN105546129A (en) Rainproof and anti-shockwave valve
US20180347849A1 (en) Louver assembly
CN105370945B (en) Shock wave resistance valve
CN204987408U (en) Air conditioning plant's drainage structures
CN102297490A (en) Roof wind-sheltering adjustable lighting ventilator
CN111799670A (en) Flood control switch board
CN201447791U (en) clearstory
DE102012002109B4 (en) Surface fan for a roof
CN205479382U (en) Rain -proof ripples valve that shocks resistance
CN205639757U (en) Fireproof check valve
CN102645009A (en) Sundries-preventing ground air supply port structure
CN107514214A (en) A kind of rain-proof dust-proof window of underground building
DE202008017906U1 (en) Baffles for a roof of a building
US3403616A (en) Combination storm louver and automatic back-draft damper
CN105672212B (en) Electric power free lifting type flood gate
CN203175336U (en) Tornado-resistance and flying-object-impact-prevention air inlet and exhaust window structure of nuclear power station
DE202009007559U1 (en) Inverter building
CN103104515A (en) Negative-pressure fan
CN202254087U (en) Roof wind-shielding adjustable daylighting ventilator
CN206061356U (en) Radix Saposhnikoviae sandbox sledge fills automatically controlled integrated apparatus
CN204243502U (en) A kind of moistureproof power distribution cabinet
CN216667887U (en) A factory building daylighting ventilation equipment for draught fan
CN205724520U (en) A kind of air convection ventilation unit of ring main unit
CN203822718U (en) Exhaust fan dust cover and dust-proof exhaust fan
CN210717943U (en) Double-layer protective net ventilation opening structure on wall body of bank cash area

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
CB02 Change of applicant information
CB02 Change of applicant information

Address after: 224100 Jiangsu Yancheng City Dafeng Economic Development Zone South of pump valve industrial park

Applicant after: Jiangsu Dragon Industries Equipment Co., Ltd.

Address before: 224100 Jiangsu Yancheng City Economic Development Zone, south of pump valve industrial park.

Applicant before: Jiangsu Dragon Industries Equipment Co., Ltd.

GR01 Patent grant
GR01 Patent grant
CP03 Change of name, title or address
CP03 Change of name, title or address

Address after: 224199 Xikang Road, Dafeng Economic Development Zone, Yancheng City, Jiangsu Province

Patentee after: Jiangsu juege Industry Group Co.,Ltd.

Address before: 224100 Jiangsu Yancheng City Dafeng Economic Development Zone South of pump valve industrial park

Patentee before: JIANGSU DRAGON INDUSTRIAL EQUIPMENT Co.,Ltd.