CN109540955A - A kind of transition compresses formula metal detector - Google Patents

A kind of transition compresses formula metal detector Download PDF

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Publication number
CN109540955A
CN109540955A CN201811393019.1A CN201811393019A CN109540955A CN 109540955 A CN109540955 A CN 109540955A CN 201811393019 A CN201811393019 A CN 201811393019A CN 109540955 A CN109540955 A CN 109540955A
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CN
China
Prior art keywords
plate
transition
groove
locking
compresses
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.)
Withdrawn
Application number
CN201811393019.1A
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Chinese (zh)
Inventor
孙颖
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.)
Dongtai Gaoke Technology Innovation Park Co Ltd
Original Assignee
Dongtai Gaoke Technology Innovation Park 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 Dongtai Gaoke Technology Innovation Park Co Ltd filed Critical Dongtai Gaoke Technology Innovation Park Co Ltd
Priority to CN201811393019.1A priority Critical patent/CN109540955A/en
Publication of CN109540955A publication Critical patent/CN109540955A/en
Withdrawn legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/22Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
    • G01N23/223Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material by irradiating the sample with X-rays or gamma-rays and by measuring X-ray fluorescence
    • 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
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
    • F16M11/02Heads
    • F16M11/04Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
    • F16M11/043Allowing translations
    • F16M11/046Allowing translations adapted to upward-downward translation movement
    • 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
    • F16MFRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
    • F16M11/00Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
    • F16M11/02Heads
    • F16M11/18Heads with mechanism for moving the apparatus relatively to the stand
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00Investigating materials by wave or particle radiation
    • G01N2223/07Investigating materials by wave or particle radiation secondary emission
    • G01N2223/076X-ray fluorescence
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00Investigating materials by wave or particle radiation
    • G01N2223/10Different kinds of radiation or particles
    • G01N2223/101Different kinds of radiation or particles electromagnetic radiation
    • G01N2223/1016X-ray
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00Investigating materials by wave or particle radiation
    • G01N2223/30Accessories, mechanical or electrical features
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00Investigating materials by wave or particle radiation
    • G01N2223/30Accessories, mechanical or electrical features
    • G01N2223/321Accessories, mechanical or electrical features manipulator for positioning a part
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00Investigating materials by wave or particle radiation
    • G01N2223/60Specific applications or type of materials
    • G01N2223/616Specific applications or type of materials earth materials

Abstract

Formula metal detector is compressed the invention discloses a kind of transition, including U-shaped frame, drive rod, limit plate, compresses component, movable plate, survey meter, locking mechanism, transition plates;The present invention connects a transition plates in the upper end moving rotary of drive rod, and transition plates is made of polytetrafluoroethylene material, carries out rotation by lower end of the transition plates to movable plate and compresses, eliminates the friction between drive rod and movable plate.

Description

A kind of transition compresses formula metal detector
Technical field
The present invention relates to a kind of transition to compress formula metal detector.
Background technique
With metal pollutant than more prominent in soil inorganic pollutant, mainly since metal pollutant cannot be micro- for soil Biology is decomposed, and is easy to accumulate, and is converted into the bigger methyl compound of toxicity, in addition some by food chain with adverse concentration It is accumulated in human body, seriously endangers human health.Currently, the metallic pollution analyte detection in soil generally passes through hand-held X-ray Fluorescence Spectrometer is completed, and still, present hand-held Xray fluorescence spectrometer is when being detected, it is not possible to it stretches, into And using flexible and convenience degree are restricted.
Summary of the invention
In view of the deficiencies of the prior art mentioned above, problems solved by the invention are as follows: providing one kind prevents friction, has lock Determine function, the transition of scalable movement compresses formula metal detector.
To solve the above problems, the technical solution adopted by the present invention is as follows:
A kind of transition compresses formula metal detector, including U-shaped frame, drive rod, limit plate, compress component, movable plate, survey meter, Locking mechanism, transition plates;The transition plates is made of polytetrafluoroethylene material;The lower end of the transition plates is equipped with connection spiral shell Line column;The upper end of the drive rod is equipped with transition thread groove;The transition plates rotates peace by the connection screw thread column of lower end In the transition thread groove of drive rod upper end;The upper end of the U-shaped frame is slidably installed movable plate;In the movable plate Between upper end connect survey meter;The upper end of the drive rod penetrates among the bottom of U-shaped frame and is connected to the lower end of movable plate On face;The two sides of the U-shaped frame are installed by two front and back limit plates relatively disposed in parallel respectively;The limit plate it is opposite Inside is respectively equipped with clamping sliding groove;The component that compresses includes driving wind spring, shank, sliding shoe;The U-shaped frame Installation drives wind spring respectively inside two sides;The driving wind spring elasticity is pressed on the upper end two sides of movable plate;The driving The inside center of wind spring, which is worn, connects a shank;The both ends of the shank are installed by one sliding shoe respectively;The sliding Block, which slides up and down, to be connected in the clamping sliding groove of limit plate;The outside of the clamping sliding groove of the limit plate is equipped with to wear and connect Slot;The inside of the sliding shoe, which is equipped with, to be prevented being disengaged from the groove, and the outside of sliding shoe is equipped with locking screw thread slot;It is described anti-to be disengaged from the groove and lock It is connected between thread groove by link slot;It is described to wear access slot and locking screw thread slot communicates;The locking mechanism includes Locking screw compresses plate, transiting rod, card adapter plate;The access slot rear thread of wearing that the locking screw passes through limit plate is mounted on cunning In the locking screw thread slot of motion block;The outer end installation of the locking screw compresses plate, and the inner end of locking screw connects transiting rod, mistake Cross the inner end connection card adapter plate of bar;The transiting rod sequentially pass through extend to after the locking screw thread slot and link slot of sliding shoe it is anti- In being disengaged from the groove;The card adapter plate sliding clamping is mounted in anti-be disengaged from the groove;The plate that compresses is pressed on the lateral surface of limit plate.
Further, the cross-sectional width of the link slot is respectively less than the anti-cross-sectional width being disengaged from the groove with locking screw thread slot.
Further, the rounded structure of the card adapter plate;The diameter of the card adapter plate is greater than the cross-sectional width of link slot.
Further, the locking mechanism further includes locking drive rod;The T-shaped structure of locking drive rod;It is described Locking drive rod be fixed on the lateral surface for compressing plate.
Further, driving threaded hole is equipped among the bottom of the U-shaped frame;The lateral surface of the drive rod is equipped with External screw thread;The drive rod is connected on the driving threaded hole among the bottom of U-shaped frame by external screw thread.
Further, the two sides lower inside of the U-shaped frame is equipped with mounting groove;The bottom of the driving wind spring, which is equipped with, to be connected Tape splicing;Installation is fixed in the connecting band insertion mounting groove and by positioning screw.
Further, polytetrafluoroethylene (PTFE) ring set is enclosed on the outside of the shank.
Beneficial effects of the present invention
1. the present invention connects a transition plates in the upper end moving rotary of drive rod, transition plates is made of polytetrafluoroethylene material, Rotation is carried out by lower end of the transition plates to movable plate to compress, and eliminates the friction between drive rod and movable plate.
2. the present invention is additionally arranged locking mechanism, locking mechanism includes locking screw, compresses plate, transiting rod, card adapter plate;When need When sliding shoe and limit plate are locked, spin locking screw rod, locking screw screw thread is locked in the locking screw thread of sliding shoe In slot, it is mobile and to compress plate and be pressed on the lateral surface of limit plate that locking screw drive compresses plate, forms locking structure;When When needing sliding shoe and limit plate being unlocked sliding, spin locking screw rod, so that locking screw rotationally disengages sliding shoe The arrival of locking screw thread slot is worn in access slot, while locking screw drives card adapter plate preventing being disengaged from the groove interior movement and be connected to by transiting rod It is anti-to be disengaged from the groove inside, while locking screw drive compresses plate and is moved out on limit plate lateral surface outward, has been thusly-formed locking The unlock of screw rod and limit plate separates, smart structural design, it can be achieved that sliding shoe and limit plate opening and closing.
3. structure of the invention deft design is added and compresses component to be driven and be resetted to movable plate, of the invention is supported Pressing component includes driving wind spring, shank, sliding shoe, and shank is inserted into the inside center of driving wind spring, and shank Both ends are slidably connected in the clamping sliding groove of limit plate by sliding shoe, drive driving wind spring to wind drawing up and down by shank Movement is stretched, and driving wind spring is passed through by the upper surface that driving wind spring compresses movable plate and drives movable plate mobile downwards, The lower end of movable plate compresses driving by drive rod upwards.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is limit plate of the present invention and the side structure schematic view for compressing component.
Fig. 3 is the enlarged structure schematic diagram of present invention driving wind spring and shank.
Fig. 4 is top cross-sectional view of the locking mechanism of the side Fig. 2 in lock state.
Fig. 5 is top cross-sectional view when locking mechanism is opened in Fig. 4.
Specific embodiment
The content of present invention is described in further detail with reference to the accompanying drawing.
As shown in Fig. 1 to 5, a kind of transition compresses formula metal detector, including U-shaped frame 1, drive rod 4, limit plate 2, compresses Component 6, movable plate 3, survey meter 5, locking mechanism 7, transition plates 8;The transition plates 8 is made of polytetrafluoroethylene material;Institute The lower end for the transition plates 8 stated is equipped with connection screw thread column 81;The upper end of the drive rod 4 is equipped with transition thread groove 41;Described Transition plates 8 is rotatably mounted in the transition thread groove 41 of 4 upper end of drive rod by the connection screw thread column 81 of lower end;The U-shaped The upper end of frame 1 is slidably installed movable plate 3;The intermediate upper end of the movable plate 3 connects survey meter 5;The drive rod 4 it is upper End penetrates among the bottom of U-shaped frame 1 and is connected on the lower end surface of movable plate 3;It installs respectively the two sides of the U-shaped frame 1 Two front and back limit plates 2 relatively disposed in parallel;The relative inner of the limit plate 2 is respectively equipped with clamping sliding groove 21;Institute The component 6 that compresses stated includes driving wind spring 61, shank 62, sliding shoe 63;It is installed respectively inside the two sides of the U-shaped frame 1 Drive wind spring 61;Driving 61 elasticity of wind spring is pressed on the upper end two sides of movable plate 3;The inside of the driving wind spring 61 Center, which is worn, connects a shank 62;The both ends of the shank 62 are installed by one sliding shoe 63 respectively;The sliding shoe 63 It slides up and down and is connected in the clamping sliding groove 21 of limit plate 2.The outside of the clamping sliding groove 21 of the limit plate 2 is equipped with and wears Access slot 22;The inside of the sliding shoe 63, which is equipped with, prevents being disengaged from the groove 632, and the outside of sliding shoe 63 is equipped with locking screw thread slot 631;It is described Anti- be disengaged from the groove between 632 and locking screw thread slot 631 be connected to by link slot 633;Described wears access slot 22 and locking screw thread Slot 631 communicates;The locking mechanism 7 includes locking screw 73, compresses plate 74, transiting rod 72, card adapter plate 71;The locking 22 rear thread of access slot of wearing that screw rod 73 passes through limit plate 2 is mounted in the locking screw thread slot 631 of sliding shoe 63;The locking spiral shell The outer end installation of bar 73 compresses plate 74, and the inner end of locking screw 73 connects transiting rod 72, and the inner end of transiting rod 72 connects card adapter plate 71;The transiting rod 72, which sequentially passes through to extend to after the locking screw thread slot 631 and link slot 633 of sliding shoe 63, anti-is disengaged from the groove 632 It is interior;The sliding clamping of card adapter plate 71 is mounted on anti-be disengaged from the groove in 632;The outside for compressing plate 74 and being pressed on limit plate 2 On face.
As shown in Fig. 1 to 5, further preferably, the cross-sectional width of the link slot 633, which is respectively less than, to be prevented being disengaged from the groove 632 and lock Determine the cross-sectional width of thread groove 621, the cross-sectional width measurement direction direction A as shown in Figure 4.Further preferably, in order to make to be clamped The limit of plate 71 is disengaged from the groove in 632 anti-, the rounded structure of card adapter plate 71;The diameter of the card adapter plate 71 is greater than link slot 633 cross-sectional width.Further preferably, the locking mechanism 7 further includes locking drive rod 75;The locking drive rod 75 T-shaped structure;The locking drive rod 75 is fixed on the lateral surface for compressing plate 74.As shown in Fig. 1 to 5, further preferably, Driving threaded hole 12 is equipped among the bottom of the U-shaped frame 1;The lateral surface of the drive rod 4 is equipped with external screw thread;It is described Drive rod 4 be connected to by external screw thread on the driving threaded hole 12 among the bottom of U-shaped frame 1.Further preferably, the U The two sides lower inside of shape frame 1 is equipped with mounting groove 11;The bottom of the driving wind spring 61 is equipped with connecting band 611;The company Tape splicing 611 is inserted into mounting groove 11 and installation is fixed by positioning screw 612.Further preferably, the shank 62 Outside is enclosed with polytetrafluoroethylene (PTFE) ring set.
Lock mechanism operative process of the invention is as follows: when needing to be locked sliding shoe 63 and limit plate 2, rotation Locking screw 73,73 screw thread of locking screw are locked in the locking screw thread slot 631 of sliding shoe 63, and the drive of locking screw 73 compresses plate 74 is mobile and to compress plate 74 and be pressed on the lateral surface of limit plate 2, forms locking structure;When need by sliding shoe 63 and limit When position plate 2 is unlocked sliding, spin locking screw rod 73, so that locking screw 73 rotationally disengages the locking screw thread slot of sliding shoe 63 631 arrival limit plates 2 are worn in access slot 22, while locking screw 73 drives card adapter plate 71 to be disengaged from the groove 632 anti-by transiting rod 72 Interior movement and be connected to it is anti-be disengaged from the groove 632 insides, while the drive of locking screw 73 compresses plate 74 and is moved out outside limit plate 2 outward On side, it is thusly-formed the unlock separation of locking screw 73 and limit plate 2, such sliding shoe 63 can drive locking mechanism 7 one Rise slide up and down, smart structural design, it can be achieved that sliding shoe 63 and limit plate 2 opening and closing.
The present invention is additionally arranged locking mechanism 7, and locking mechanism 7 includes locking screw 73, compresses plate 74, transiting rod 72, clamping Plate 71, smart structural design, it can be achieved that sliding shoe 63 and limit plate 2 opening and closing;Structure of the invention deft design, adds and compresses group Part 6 carries out fitting driving to movable plate 3, and the component 6 that compresses of the invention includes driving wind spring 61, shank 62, sliding shoe 63, Shank 62 is inserted into the inside center of driving wind spring 61, and the both ends of shank 62 are slidably connected at limit by sliding shoe 63 In the clamping sliding groove 21 of position plate 2, about 61 wind spring of driving is driven to wind extensional motion by shank 62, and pass through driving Wind spring 61 compresses the upper surface of movable plate 2 and then passes through driving movable plate 3 movement downwards of driving wind spring 61, the lower end of movable plate 3 Driving is compressed upwards by drive rod 4.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.

Claims (7)

1. a kind of transition compresses formula metal detector, which is characterized in that including U-shaped frame, drive rod, limit plate, compress component, shifting Movable plate, survey meter, locking mechanism, transition plates;The transition plates is made of polytetrafluoroethylene material;Under the transition plates End is equipped with connection screw thread column;The upper end of the drive rod is equipped with transition thread groove;The connection that the transition plates passes through lower end Threaded post is rotatably mounted in the transition thread groove of drive rod upper end;The upper end of the U-shaped frame is slidably installed movable plate;It is described Movable plate intermediate upper end connect survey meter;The upper end of the drive rod penetrates and is connected among the bottom of U-shaped frame On the lower end surface of movable plate;The two sides of the U-shaped frame are installed by two front and back limit plates relatively disposed in parallel respectively;Described The relative inner of limit plate is respectively equipped with clamping sliding groove;The component that compresses includes driving wind spring, shank, sliding shoe; Installation drives wind spring respectively inside the two sides of the U-shaped frame;The driving wind spring elasticity is pressed on the upper end two of movable plate Side;The inside center of the driving wind spring, which is worn, connects a shank;The both ends of the shank are installed by one sliding respectively Block;The sliding shoe, which slides up and down, to be connected in the clamping sliding groove of limit plate;The clamping sliding groove of the limit plate Outside is equipped with and wears access slot;The inside of the sliding shoe, which is equipped with, to be prevented being disengaged from the groove, and the outside of sliding shoe is equipped with locking screw thread slot;Described Anti- be disengaged from the groove is connected between locking screw thread slot by link slot;It is described to wear access slot and locking screw thread slot communicates;Described Locking mechanism includes locking screw, compresses plate, transiting rod, card adapter plate;The locking screw pass through limit plate wear access slot after It is threadably mounted in the locking screw thread slot of sliding shoe;The outer end installation of the locking screw compresses plate, the inner end of locking screw Transiting rod is connected, the inner end of transiting rod connects card adapter plate;The transiting rod sequentially passes through locking screw thread slot and the company of sliding shoe It is extended to after access slot in anti-be disengaged from the groove;The card adapter plate sliding clamping is mounted in anti-be disengaged from the groove;The plate that compresses is pressed on limit On the lateral surface of position plate.
2. transition according to claim 1 compresses formula metal detector, which is characterized in that the section of the link slot is wide Degree is respectively less than the anti-cross-sectional width being disengaged from the groove with locking screw thread slot.
3. transition according to claim 1 compresses formula metal detector, which is characterized in that the rounded knot of the card adapter plate Structure;The diameter of the card adapter plate is greater than the cross-sectional width of link slot.
4. transition according to claim 1 compresses formula metal detector, which is characterized in that the locking mechanism further includes Lock drive rod;The T-shaped structure of locking drive rod;The locking drive rod is fixed on the lateral surface for compressing plate.
5. transition according to claim 1 compresses formula metal detector, which is characterized in that in the bottom of the U-shaped frame Between be equipped with driving threaded hole;The lateral surface of the drive rod is equipped with external screw thread;The drive rod is connected by external screw thread On driving threaded hole among the bottom of U-shaped frame.
6. transition according to claim 1 compresses formula metal detector, which is characterized in that in the two sides of the U-shaped frame Mounting groove is equipped with below portion;The bottom of the driving wind spring is equipped with connecting band;In the connecting band insertion mounting groove and lead to It crosses positioning screw and installation is fixed.
7. transition according to claim 1 compresses formula metal detector, which is characterized in that package on the outside of the shank There is polytetrafluoroethylene (PTFE) ring set.
CN201811393019.1A 2018-11-21 2018-11-21 A kind of transition compresses formula metal detector Withdrawn CN109540955A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811393019.1A CN109540955A (en) 2018-11-21 2018-11-21 A kind of transition compresses formula metal detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811393019.1A CN109540955A (en) 2018-11-21 2018-11-21 A kind of transition compresses formula metal detector

Publications (1)

Publication Number Publication Date
CN109540955A true CN109540955A (en) 2019-03-29

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Family Applications (1)

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CN201811393019.1A Withdrawn CN109540955A (en) 2018-11-21 2018-11-21 A kind of transition compresses formula metal detector

Country Status (1)

Country Link
CN (1) CN109540955A (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201344909Y (en) * 2009-01-20 2009-11-11 邹金龙 Device for detecting and adjusting x-ray inspection machine
CN104089968A (en) * 2014-07-18 2014-10-08 上海化工研究院 Device for detecting heavy metal in soil on site by rotary bucket type XRF (X-Ray Fluorescence) method
CN108224023A (en) * 2016-12-21 2018-06-29 杨仲辉 For the Liftable type supporting mechanism of rotary dryer
CN207832713U (en) * 2018-02-24 2018-09-07 上海谱实生态环境科技有限公司 A kind of heavy metal detector
CN108692041A (en) * 2018-06-22 2018-10-23 江苏浩博塑业有限公司 One kind compressing locking-type butterfly valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201344909Y (en) * 2009-01-20 2009-11-11 邹金龙 Device for detecting and adjusting x-ray inspection machine
CN104089968A (en) * 2014-07-18 2014-10-08 上海化工研究院 Device for detecting heavy metal in soil on site by rotary bucket type XRF (X-Ray Fluorescence) method
CN108224023A (en) * 2016-12-21 2018-06-29 杨仲辉 For the Liftable type supporting mechanism of rotary dryer
CN207832713U (en) * 2018-02-24 2018-09-07 上海谱实生态环境科技有限公司 A kind of heavy metal detector
CN108692041A (en) * 2018-06-22 2018-10-23 江苏浩博塑业有限公司 One kind compressing locking-type butterfly valve

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Application publication date: 20190329

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