CN110455912A - A method of for detecting valve body surface dent - Google Patents
A method of for detecting valve body surface dent Download PDFInfo
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- CN110455912A CN110455912A CN201910811702.0A CN201910811702A CN110455912A CN 110455912 A CN110455912 A CN 110455912A CN 201910811702 A CN201910811702 A CN 201910811702A CN 110455912 A CN110455912 A CN 110455912A
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- valve body
- magnetic powder
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- processing chamber
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/72—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables
- G01N27/82—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws
- G01N27/83—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields
- G01N27/84—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating magnetic variables for investigating the presence of flaws by investigating stray magnetic fields by applying magnetic powder or magnetic ink
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention discloses a kind of methods for detecting valve body surface dent, comprising: a, the valve body after casting is put into service sink, is cleaned to valve body surface, the grease removal of valve body surface is processed；B, the valve body after cleaning is dried, valve body is made to be in drying regime；C, the valve body after drying is put into defect-detecting equipment, flaw detection processing is done to valve body surface by way of spraying magnetic powder, to determine valve body surface with the presence or absence of defect；D, the defect part detected is marked, surface pitting is removed, then secondary carrying out flaw detection is done to valve body, until without dent incompleteness on valve body；E, demagnetization processing is done to valve body, makes the magnetic elimination on valve body；F, the valve body after demagnetization is cleaned, removes magnetic powder remained on surface.
Description
Technical field
The invention belongs to valve processing technique fields, more particularly, to a kind of method for detecting valve body surface dent.
Background technique
Valve is for being opened and closed pipeline, control flow direction, the parameter (temperature, pressure and flow) of regulation and control pumped (conveying) medium
Pipeline fittings.According to its function, shut-off valve, check-valves, regulating valve etc. can be divided into.
Valve includes valve body and spool, and the processing of valve body, that is, valve shell, valve body has a direct impact the quality of valve,
Need to guarantee that valve body surface does not occur groove slight crack after valve body processing, to guarantee the leakproofness of valve, therefore valve body is after manufacture
Detection to it is essential；It is usually non-destructive testing to the detection method of valve body, magnetic powder inspection is one such side
Method, when magnetic powder inspection, need magnetic powder being sprinkled upon valve body surface, since, there are cavity, magnetic powder is easily accessible in sprinkling in valve body
Valve inner, magnetic powder are easy to remain in valve body, are that the cleaning process in later period increases difficulty.
Summary of the invention
The present invention for overcome the deficiencies in the prior art, provides a kind of method for detecting valve body surface dent.
To achieve the goals above, the invention adopts the following technical scheme: it is a kind of for detecting the side of valve body surface dent
Method, comprising:
A, the valve body after casting is put into service sink, valve body surface is cleaned, process the grease removal of valve body surface；
B, the valve body after cleaning is dried, valve body is made to be in drying regime；
C, the valve body after drying is put into defect-detecting equipment, flaw detection processing is done to valve body surface by way of spraying magnetic powder,
To determine valve body surface with the presence or absence of defect；
D, the defect part detected is marked, surface pitting is removed, then secondary carrying out flaw detection is done to valve body, until
Without dent incompleteness on valve body；
E, demagnetization processing is done to valve body, makes the magnetic elimination on valve body；
F, the valve body after demagnetization is cleaned, removes magnetic powder remained on surface；
Wherein, the defect-detecting equipment in the step c include treatment box, the fixation claw assembly in the treatment box and be set to institute
The seal assembly below fixed claw assembly is stated, the treatment box is equipped with processing chamber, and the processing chamber side wall is equipped with observation window,
The processing cavity wall is equipped with the first connecting plate, and first connecting plate is equipped with cavity, and the cavity sidewalls are equipped with more
A spray orifice, the processing chamber bottom are equipped with storage cavity, and the processing chamber side wall is equipped with feeding chamber, the storage cavity and the sky
Chamber is communicated by the feeding chamber；The seal assembly includes the first push rod that can be moved horizontally, is set to first push rod
On the second connecting plate and metal block set on second connecting plate bottom, after valve body is put into processing chamber, described
Two connecting plate side walls are in contact with the valve interior wall；After the completion of valve body is dry, valve body is carried by manipulator, by valve
Body is put into processing chamber, and fixed claw assembly is in contact with valve body, and valve body is fixed in processing chamber, and the first push rod pushes second
Connecting plate moves forward, is inserted into the second connecting plate in valve body, and the second connecting plate side wall is in contact with valve interior wall, by valve body
Inside closing, metal block are in contact with body wall, connect electric current for valve body, and valve body is made to generate magnetic field, the magnetic powder in storage cavity
It is entered in cavity by feeding chamber, sprays magnetic powder out of spray orifice, magnetic powder is sprayed in valve body surface, is carried out to valve body surface
Detection, to determine that valve body surface with the presence or absence of defect, completes the carrying out flaw detection of valve body.
It is used in seal assembly component, the second connecting plate is directly protruding into valve body after being put into valve body in processing chamber,
It seals to valve inner, avoids making magnetic powder enter valve inner during spraying magnetic powder, when magnetic powder has sprayed
Cheng Hou, the second connecting plate are removed out of valve body, and the second connecting plate when moving takes the magnetic powder on valve body opening out of, and magnetic powder is avoided to exist
Valve inner residual, reduces the loss of magnetic powder；Under the action of fixed claw assembly, valve body is fixed in processing chamber, valve body is made
It is suspended from processing chamber, to do carrying out flaw detection to valve body；Under the spray orifice setting on the first connecting plate, keep magnetic powder more uniform
It is sprayed on body wall, enables to be covered at the tested region of valve body surface by magnetic powder, to be carried out to the incompleteness on valve body
Detection；By observation window convenient for directly observing the valve body in treatment box, keep the detection of valve body more intuitive.
Drying means in the step b is that the valve body after cleaning is put into drying box, keeps drying the temperature inside the box
For 60 DEG C and air-flow is passed to, until the moisture on valve body is dried.
It needs valve body being directly placed at the external world after the valve body drying, is again put into valve body after valve body is cooled to room temperature
It is detected in defect-detecting equipment.
The magnetic powder is magnetic iron oxide powder.
The demagnetization operation constantly changes current direction and electric current is gradually down to zero to access direct current at valve body both ends
Value.
The treatment box side wall is equipped with the first equipment cavity, is equipped with the first cylinder, the fixation in first equipment cavity
Claw assembly includes the second push rod on first cylinder piston rod and the clamping jaw on the fixed jaw, the clamping jaw
It is equipped with the first movable chamber, fixed spring is equipped in first movable chamber, described fixed spring one end is equipped with to be fixed with first
Block, first fixed block are equipped with the first groove；The fixed claw assembly is two groups, is respectively arranged on the treatment box two sides,
The left side clamping jaw is equipped with third connecting plate, and the right side clamping jaw is equipped with the 4th matched with the third connecting plate and connects
Fishplate bar；After valve body is put into processing chamber under manipulator effect, the first cylinder pushes the second push rod to move forward, makes left side
Clamping jaw and right side clamping jaw are close to each other, until after left side clamping jaw is in contact with right side clamping jaw, third connecting plate and the 4th connecting plate
Left side clamping jaw and right side clamping jaw are fixed in mutual cooperation, so that left side clamping jaw and right side clamping jaw is fixed together, valve body top is consolidated
It is scheduled between two clamping jaws, the first fixed block is in contact with body wall, and the first fixed block enters in the first movable chamber, fixed
Spring generates thrust to the first fixed block, so that the first fixed block is generated extruding force to valve body, it is right in processing chamber that valve body is fixed on
Valve body does detection processing；Under the mutual cooperation of two fixed claw assemblies, make two clamping jaws by valve body upper pinch, fixed jaw with
Valve body generates cooperation, valve body is fixed, to be suspended in valve body in processing chamber；In the cooperation of third connecting plate and the 4th connecting plate
Under, make two clamping jaws be stably fixed to together, cooperate with the first cylinder, reduces the first cylinder burden；It is fixed first
Under the cooperation of block and fixed spring, the first fixed block is made to generate extruding force to body wall, to increase rubbing for clamping jaw and valve body
Power is wiped, promotes clamping jaw to the fixed effect of valve body；By the limitation of the first groove, body wall is made just to be embedded in the first groove
It is interior, so that the first fixed block is preferably in contact with body wall, the further clamping jaw that promoted is to the fixed effect of valve body.
The processing cavity wall is equipped with baffle, and the baffle and first connecting plate are oppositely arranged, on the baffle
Equipped with the second groove, second groove inner wall is equipped with cambered surface；The treatment box side wall is equipped with the second equipment cavity, and described the
The second cylinder is equipped in two equipment cavities, second cylinder piston rod is equipped with the first pushing block, is equipped at the top of first pushing block
First link block, is equipped with skewed slot at the top of first link block, and the processing chamber bottom is equipped with the communicated with the storage cavity
One opening；After valve body is fixed in processing chamber, the magnetic powder in storage cavity is entered in cavity by feeding chamber, makes magnetic powder from spray
It is sprayed in hole, part magnetic powder is sprayed directly on valve body, and another part magnetic powder passes through valve body and baffle from valve body upper and lower part
It is in contact, impinges upon after the magnetic powder on baffle rebounds via baffle and impinge upon on the valve body other side, sprayed on another side wall of valve body
Upper magnetic powder；Extra magnetic powder is fallen from valve body, falls magnetic powder in processing chamber bottom, the second cylinder pushes the first pushing block forward
Movement, the first pushing block push the magnetic powder of processing chamber bottom toward the first opening, make the magnetic powder of processing chamber bottom from the first opening
Place is fallen in storage cavity, is recycled to the magnetic powder of processing chamber bottom；Magnetic powder, which is sprayed on baffle, generates collision, magnetic powder with baffle
It rebounds after touching baffle, makes magnetic powder by bullet to the valve body other side, so that magnetic powder is uniformly coated in surrounding valve body, so as to right
Valve body is detected；Under the cambered surface setting of the second groove inner wall, it play the guiding role, makes from gear to the magnetic powder to rebound from baffle
The magnetic powder to rebound on plate is moved toward the middle part of the valve body other side, to spray magnetic powder on the valve body other side, is distributed magnetic powder
The flaw detection to valve body is completed in valve body surface to handle；Under the setting of the first pushing block, so as to falling in processing chamber bottom
Magnetic powder is recycled, and is returned directly to extra magnetic powder in storage cavity, is reduced processing chamber and is cleared up difficulty, and magnetic powder waste is reduced；In
Skewed slot is set on first link block, is trapped in after avoiding magnetic powder from falling on the first link block on the first link block, keeps magnetic powder equal
It falls in the first pushing block side, magnetic powder is recycled so that the magnetic powder of processing chamber bottom to be pushed into the first opening.
The invention has the following advantages that being used in seal assembly component, the second connection after being put into valve body in processing chamber
Plate is directly protruding into valve body, is sealed to valve inner, avoids making magnetic powder enter valve during spraying magnetic powder
Internal portion, after the completion of magnetic powder sprinkling, the second connecting plate is removed out of valve body, and the second connecting plate when moving will be on valve body opening
Magnetic powder is taken out of, avoids magnetic powder from remaining in valve inner, reduces the loss of magnetic powder.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of defect-detecting equipment of the present invention.
Fig. 2 is the diagrammatic cross-section one of defect-detecting equipment of the present invention.
Fig. 3 is enlarged drawing at the A in Fig. 2.
Fig. 4 is enlarged drawing at the B in Fig. 2.
Fig. 5 is enlarged drawing at the C in Fig. 2.
Fig. 6 is the diagrammatic cross-section two of defect-detecting equipment of the present invention.
Fig. 7 is enlarged drawing at the D in Fig. 6.
Fig. 8 is the diagrammatic cross-section three of defect-detecting equipment of the present invention.
Fig. 9 is enlarged drawing at the E in Fig. 8.
Figure 10 is enlarged drawing at the F in Fig. 8.
Figure 11 is the diagrammatic cross-section four of defect-detecting equipment of the present invention.
Figure 12 is enlarged drawing at the G in Figure 11.
Figure 13 is the structural schematic diagram of valve body of the present invention.
Specific embodiment
A method of for detecting valve body surface dent, comprising: a, the valve body after casting is put into service sink, it is right
Valve body surface is cleaned, and the grease removal of valve body surface is processed；B, the valve body after cleaning is dried, is in valve body
Drying regime；C, the valve body after drying is put into defect-detecting equipment, is detected a flaw by way of spraying magnetic powder to valve body surface
Processing, to determine valve body surface with the presence or absence of defect；D, the defect part detected is marked, surface pitting is gone
It removes, then secondary carrying out flaw detection is done to valve body, until without dent incompleteness on valve body；E, demagnetization processing is done to valve body, makes on valve body
Magnetism is eliminated；F, the valve body after demagnetization is cleaned, removes magnetic powder remained on surface；Drying means in the step b is
Valve body after cleaning is put into drying box, keeps drying the temperature inside the box to be 60 DEG C and pass to air-flow, until will be on valve body
Moisture drying；It needs valve body being directly placed at the external world after the valve body drying, is again put into valve body after valve body is cooled to room temperature
It is detected in defect-detecting equipment；The magnetic powder is magnetic iron oxide powder；The demagnetization operation is in valve body both ends access direct current
Electricity constantly changes current direction and electric current is gradually down to zero.
As shown in figs. 1-12, the defect-detecting equipment in the step c includes treatment box 1, the fixation in the treatment box 1
Claw assembly and the seal assembly below the fixed claw assembly, the treatment box 1 are equipped with processing chamber, the processing chamber side
Wall is equipped with observation window, and the processing cavity wall is equipped with the first connecting plate 13, and first connecting plate 13 is equipped with cavity, institute
Cavity sidewalls are stated equipped with multiple spray orifices, the processing chamber bottom is equipped with storage cavity 17, and storage cavity is provided with magnetic powder, the processing
Chamber side wall is equipped with feeding chamber 18, and the storage cavity 17 is communicated by the feeding chamber 18 with the cavity, set in the cavity
There is air pump, the magnetic powder in storage cavity can be delivered in cavity under air pump effect；The seal assembly includes that can do horizontal shifting
The first dynamic push rod 3, the second connecting plate 31 on first push rod 3 and the gold set on 31 bottom of the second connecting plate
Belong to block 36, after valve body 4 is put into processing chamber, 31 side wall of the second connecting plate is in contact with 4 inner wall of valve body；Valve body
After the completion of drying, valve body is carried by manipulator, valve body is put into processing chamber, fixed claw assembly connects with valve body
Touching, valve body is fixed in processing chamber, and the first push rod 3 pushes the second connecting plate 31 to move forward, is inserted into the second connecting plate 31
Into valve body, 31 side wall of the second connecting plate is in contact with valve interior wall, and valve inner is closed, metal block 36 and body wall phase
Contact connects electric current for valve body, and valve body is made to generate magnetic field, and the magnetic powder in storage cavity 17 is entered in cavity by feeding chamber 18,
Spray magnetic powder out of spray orifice, magnetic powder is sprayed in valve body surface, is detected to valve body surface, whether to determine valve body surface
Existing defects complete the carrying out flaw detection of valve body.
It is used in seal assembly component, the second connecting plate is directly protruding into valve body after being put into valve body in processing chamber,
It seals to valve inner, avoids making magnetic powder enter valve inner during spraying magnetic powder, when magnetic powder has sprayed
Cheng Hou, the second connecting plate are removed out of valve body, and the second connecting plate when moving takes the magnetic powder on valve body opening out of, and magnetic powder is avoided to exist
Valve inner residual, reduces the loss of magnetic powder；Under the action of fixed claw assembly, valve body is fixed in processing chamber, valve body is made
It is suspended from processing chamber, to do carrying out flaw detection to valve body；Under the spray orifice setting on the first connecting plate, keep magnetic powder more uniform
It is sprayed on body wall, enables to be covered at the tested region of valve body surface by magnetic powder, to be carried out to the incompleteness on valve body
Detection；By observation window convenient for directly observing the valve body in treatment box, keep the detection of valve body more intuitive.
Treatment box side wall is equipped with third equipment cavity 12, and third cylinder 121, the third gas are equipped with when in third equipment cavity
Cylinder is for driving first push rod to move horizontally.
Second connecting plate is equipped with the second movable chamber, and the second movable chamber side wall is equipped with multiple second openings,
The second pushing block 32 is equipped in second movable chamber, second pushing block is arranged in second opening, second pushing block
On be hinged with first connecting rod 321, the first support spring 33 matched with first connecting rod is equipped in the second movable chamber, it is described
First push rod is equipped with the third movable chamber that communicates with second movable chamber, is equipped in the third movable chamber and described the
The third push rod 34 that one connecting rod matches；After the second connecting plate enters in valve body, third push rod is in the second movable chamber
Movement, third push rod are in contact with first connecting rod, make third push rod that first connecting rod be pushed to move toward the second movable chamber bottom,
First connecting rod is rotated around tie point, is made first connecting rod that the second pushing block be pushed to stretch out from the second opening, is made the second pushing block
It is in contact with valve interior wall, the second connecting plate is fixed in valve body, promote the fiting effect of the second connecting plate and valve body, guarantee
Sealing effect of second connecting plate to valve body.
Second connecting plate side wall is equipped with the annular groove matched with second opening, is equipped with rubber membrane, rubber in annular groove
Film side wall is fixed on annular groove inner wall by bonding form；After the second pushing block is stretched out out of second opening, the second pushing block and rubber
Glue film inner wall is in contact, and the second pushing block is made to push rubber membrane outward movment, and rubber membrane generates deformation under the second pushing block, makes rubber
Film is contacted with valve interior wall, increases the contact area of the second connecting plate and valve interior wall under rubber membrane effect, by the second connection
The gap of plate and valve interior wall is filled up, and magnetic powder is avoided to enter valve inner, promotes the second connecting plate to the sealing effect of valve body.
Treatment box side wall is equipped with first through hole, and the first push rod is arranged in the first through hole, and first push rod one end is set
There is limit plate, limit plate can not be deviate from out of first through hole, and third push rod one end is equipped with push plate, and third movable chamber one end is set
There is the second through-hole matched with the push plate, third activity cavity wall is equipped with the first limited block 35, and third push rod is equipped with
First support plate 341, the first support plate are equipped with the second support spring 342, and the second support spring other end is fixed on described the
On one limited block, third activity cavity wall is equipped with the second support plate matched with first support plate；When valve body is put into
To handle it is intracavitary after, third air cylinder driven piston rod is stretched out, and piston rod is in contact with push plate, in the case where the second support spring acts on,
Make third push rod that the first push rod be driven to move forward together, the second connecting plate is pushed into valve inner；When the second connecting plate into
Enter to after valve inner, limit plate moves to first through hole one end, and the first push rod can not continue to move to, and third cylinder drags third
Push rod moves in the second movable chamber, and third push rod is in contact with first connecting rod, and the second pushing block is released from the second opening,
It is in contact to make the second pushing block that rubber membrane be pushed to generate deformation with valve interior wall, prevents magnetic powder from entering valve inner closing
In valve body.
1 side wall for the treatment of box is equipped with the first equipment cavity 11, is equipped with the first cylinder 111 in first equipment cavity 11,
The fixed claw assembly includes the second push rod 2 on first cylinder, 111 stopper rods living and is set on second push rod 2
Clamping jaw 21, the clamping jaw 21 is equipped with the first movable chamber, fixed spring 221, the fixation is equipped in first movable chamber
221 one end of spring, which is equipped with, is equipped with the first groove with the first fixed block 22, first fixed block 22；The fixed claw assembly is
Two groups, 1 two sides for the treatment of box are respectively arranged on, the left side clamping jaw is equipped with third connecting plate 25, sets on the right side clamping jaw
There is the 4th connecting plate 26 matched with the third connecting plate 25；Valve body is put into processing chamber under manipulator effect
Afterwards, the first cylinder 111 pushes the second push rod 2 to move forward, keeps left side clamping jaw and right side clamping jaw close to each other, until left side clamping jaw
After being in contact with right side clamping jaw, left side clamping jaw and right side clamping jaw are consolidated in third connecting plate 25 and the mutual cooperation of the 4th connecting plate 26
It is fixed, so that left side clamping jaw and right side clamping jaw is fixed together, valve body top is fixed between two clamping jaws, the first fixed block 22 with
Body wall is in contact, and the first fixed block 22 enters in the first movable chamber, and fixed spring 221 pushes away the generation of the first fixed block 22
Power makes the first fixed block 22 generate extruding force to valve body, valve body is fixed in processing chamber and does detection processing to valve body；At two
Under the mutual cooperation of fixed claw assembly, makes two clamping jaws that valve body upper pinch, fixed jaw and valve body are generated cooperation, valve body is consolidated
It is fixed, to be suspended in valve body in processing chamber；Under the cooperation of third connecting plate and the 4th connecting plate, make two clamping jaws are stable to consolidate
It is scheduled on together, cooperates with the first cylinder, reduce the first cylinder burden；Under the cooperation of the first fixed block and fixed spring,
So that the first fixed block is generated extruding force to body wall, to increase the frictional force of clamping jaw and valve body, promotes clamping jaw to valve body
Fixed effect；By the limitation of the first groove, be embedded in body wall just in the first groove, make the first fixed block preferably with
Body wall is in contact, and the further clamping jaw that promoted is to the fixed effect of valve body.
First movable chamber two sides are respectively equipped with cavity, are equipped with the second fixed block 24, the second fixed block in the cavity
One end is equipped with the second groove, and the second fixed block side wall is equipped with sliding block, and cavity inner wall is equipped with the cunning matched with the sliding block
Slot, the first fixed block bottom be equipped with the second link block, the second fixed block bottom be equipped with third link block, second link block with
The third link block is connected by one second connecting rod 23, and the second connecting rod both ends are hingedly connected to the second link block and third
On link block, it is rotationally connected in the first movable chamber in the middle part of the second connecting rod；Valve body is fixed when two clamping jaws are close to each other
When, valve body pushes the first fixed block to move in the first movable chamber, and the first fixed block pushes the second connecting rod around connection when mobile
Point rotation, the second connecting rod other end pushes the second fixed block toward cavity movement outside, to make the second fixed block and valve body-side
Wall is in contact, and body wall is embedded into the second groove, and body wall is made to be in contact with the second groove inner wall, and it is fixed to increase by second
Contact effect of the block with valve body；So that the second fixed block and the first fixed block is cooperated and provides pressure, improving clamping to body wall
Valve body is stably fixed in processing cavity the fixed effect of valve body by pawl.
Left side clamping jaw and right side clamping jaw remaining structure in addition to third connecting plate and the 4th connecting plate are all the same；On clamping jaw end face
Equipped with the 4th movable chamber, the third connecting plate is rotatably equipped on the clamping jaw in the left side, and the third one end of the connection board is set
There is convex block 251, convex block side is equipped with cambered surface, and the other end is equipped with the 4th link block 252, and the 4th connecting plate is set to the right side
In the 4th movable chamber on clamping jaw, the 4th connecting plate bottom is equipped with the link slot 261 matched with the 4th link block, right side
The 4th cylinder 27 is equipped at the top of clamping jaw, the piston rod of the 4th cylinder is arranged in the 4th movable chamber of the right side clamping jaw, and the 4th
Connecting plate is set on the piston rod of the 4th cylinder, and the 4th one end of the connection board is set on the outside of the 4th movable chamber；Work as left side
After clamping jaw and right side clamping jaw are close to each other, the 4th one end of the connection board is inserted into the 4th movable chamber on the clamping jaw of left side, makes the 4th
One end of the connection board is in contact with the convex block on third connecting plate, and the 4th connecting plate pushes third connecting plate to rotate around tie point, makes
Third connecting plate turns to horizontality, in the 4th link block insertion band connection slot on third connecting plate, makes third connecting plate
Form secure fit with the 4th connecting plate, so that two clamping jaws are fixed together, make the 4th connecting plate and third connecting plate with
First cylinder cooperates, and the connection effect of two clamping jaws is promoted, to promote clamping jaw to the fixed effect of valve body.
The processing cavity wall is equipped with baffle 14, and the baffle 14 and first connecting plate 13 are oppositely arranged, described
Baffle 14 is equipped with the second groove, and second groove inner wall is equipped with cambered surface；1 side wall for the treatment of box is equipped with the second equipment
Chamber 16, second equipment cavity 16 is interior to be equipped with the second cylinder 161, and 161 piston rod of the second cylinder is equipped with the first pushing block 15,
It is equipped with the first link block 151 at the top of first pushing block 15, is equipped with skewed slot, the processing chamber at the top of first link block 151
Bottom is equipped with the first opening communicated with the storage cavity 17；After valve body is fixed in processing chamber, the magnetic powder in storage cavity 17
It is entered in cavity by feeding chamber 18, sprays magnetic powder out of spray orifice, part magnetic powder is sprayed directly on valve body, another part
Magnetic powder is in contact by valve body with baffle 14 from valve body upper and lower part, and the magnetic powder impinged upon on baffle 14 rebounds via baffle 14
After impinge upon on the valve body other side, spray magnetic powder on another side wall of valve body；Extra magnetic powder is fallen from valve body, falls magnetic powder
Fall in processing chamber bottom, the second cylinder 161 pushes the first pushing block 15 to move forward, and the first pushing block 15 is by the magnetic powder of processing chamber bottom
It is pushed toward the first opening, falls to the magnetic powder of processing chamber bottom in storage cavity 17 from the first opening, to processing chamber bottom
Magnetic powder recycled；Magnetic powder, which is sprayed on baffle, generates collision with baffle, and magnetic powder rebounds after touching baffle, makes magnetic powder by bullet
To the valve body other side, so that magnetic powder is uniformly coated in surrounding valve body, to detect to valve body；In the second groove inner wall
Under cambered surface setting, it play the guiding role to the magnetic powder to rebound from baffle, makes the magnetic powder to rebound from baffle toward the valve body other side
Middle part movement be distributed in magnetic powder in valve body surface to spray magnetic powder on the valve body other side and complete flaw detection to valve body
Processing；Under the setting of the first pushing block, to recycle to the magnetic powder fallen in processing chamber bottom, keep extra magnetic powder direct
It returns in storage cavity, reduces processing chamber and clear up difficulty, reduce magnetic powder waste；Skewed slot is set on the first link block, avoids magnetic powder
It is trapped in after falling on the first link block on the first link block, falls magnetic powder in the first pushing block side, to handle
The magnetic powder in bottom of chamber portion is pushed into the first opening and is recycled to magnetic powder.
First cylinder, the second cylinder, third cylinder and the 4th cylinder is being that schematic table is existing in the figure in it
Portion's specific structure is identical as air cylinder structure on the market.
When detecting to valve body, the valve body after drying is delivered in processing case by manipulator, when valve body enters processing
After intracavitary, the first cylinder pushes the second push rod to move forward, and making left and right, two clamping jaws are close to each other clamps valve body, third connection
Plate and the 4th plate form cooperation, promote clamping jaw to the clamping effect of valve body；Third cylinder drives the second push rod to move forward, makes the
Two connecting plates are inserted into valve body, and rubber membrane is in contact with valve interior wall, and valve body is closed, and enter magnetic powder under air pump effect
Into cavity, spray magnetic powder out of spray orifice, magnetic powder is sprayed in valve body surface, is covered on magnetic powder on valve body, to valve body table
It is detected in face；Extra magnetic powder is fallen in processing chamber bottom on valve body, after spray orifice no longer sprays magnetic powder, pushing block move forward by
The magnetic powder of processing chamber bottom is pushed into storage cavity, is collected to the magnetic powder of processing chamber bottom；When detection after the completion of need by
When valve body takes out out of processing chamber, the second connecting plate is deviate from out of valve body, by the magnetic at valve body port when the second connecting plate is mobile
Powder is taken out of together, clears up the magnetic powder of valve body opening, and manipulator, which is extend into processing chamber, grabs valve body, the 4th cylinder driving the
Four connecting plates up move, and deviate from the 4th link block out of link slot, the first cylinder drive two jaw separations, make clamping jaw with
Body wall separation, to take out valve body in the case where manipulator acts on, to handle the valve body after detection.
Claims (7)
1. a kind of method for detecting valve body surface dent, it is characterised in that: include:
A, the valve body after casting is put into service sink, valve body surface is cleaned, process the grease removal of valve body surface；
B, the valve body after cleaning is dried, valve body is made to be in drying regime；
C, the valve body after drying is put into defect-detecting equipment, flaw detection processing is done to valve body surface by way of spraying magnetic powder,
To determine valve body surface with the presence or absence of defect；
D, the defect part detected is marked, surface pitting is removed, then secondary carrying out flaw detection is done to valve body, until
Without dent incompleteness on valve body；
E, demagnetization processing is done to valve body, makes the magnetic elimination on valve body；
F, the valve body after demagnetization is cleaned, removes magnetic powder remained on surface；
Wherein, the defect-detecting equipment in the step c include treatment box (1), be set to the treatment box (1) in fixation claw assembly and
Seal assembly below the fixed claw assembly, the treatment box (1) are equipped with processing chamber, set on the processing chamber side wall
There is observation window, the processing cavity wall is equipped with the first connecting plate (13), and first connecting plate (13) is equipped with cavity, described
Cavity sidewalls are equipped with multiple spray orifices, and the processing chamber bottom is equipped with storage cavity (17), and the processing chamber side wall is equipped with conveying
Chamber (18), the storage cavity (17) are communicated with the cavity by the feeding chamber (18)；The seal assembly includes that can do water
It translates dynamic the first push rod (3), the second connecting plate (31) being set on first push rod (3) and is set to second connecting plate
(31) metal block (36) of bottom, after valve body (4) is put into processing chamber, the second connecting plate (31) side wall and the valve
Body (4) inner wall is in contact；After the completion of valve body is dry, valve body is carried by manipulator, valve body is put into processing chamber,
Fixed claw assembly is in contact with valve body, and valve body is fixed in processing chamber, and the first push rod (3) pushes the second connecting plate (31) forward
Movement, is inserted into the second connecting plate (31) in valve body, the second connecting plate (31) side wall is in contact with valve interior wall, will be in valve body
Portion's closing, metal block (36) are in contact with body wall, connect electric current for valve body, and valve body is made to generate magnetic field, and storage cavity (17) is interior
Magnetic powder entered in cavity by feeding chamber (18), spray magnetic powder out of spray orifice, magnetic powder is sprayed in valve body surface, to valve
Body surface face is detected, to determine that valve body surface with the presence or absence of defect, completes the carrying out flaw detection of valve body.
2. a kind of method for detecting valve body surface dent described in accordance with the claim 1, it is characterised in that: the step b
In drying means be that the valve body after cleaning is put into drying box, keep drying the temperature inside the box to be 60 DEG C and pass to air-flow,
Until the moisture on valve body is dried.
3. a kind of method for detecting valve body surface dent according to claim 2, it is characterised in that: the valve body dries
It needs valve body being directly placed at the external world after dry, valve body is put into defect-detecting equipment again after valve body is cooled to room temperature and is examined
It surveys.
4. a kind of method for detecting valve body surface dent described in accordance with the claim 1, it is characterised in that: the magnetic powder is
Magnetic iron oxide powder.
5. a kind of method for detecting valve body surface dent described in accordance with the claim 1, it is characterised in that: the demagnetization behaviour
Direct current is accessed as at valve body both ends, constantly changes current direction and electric current is gradually down to zero.
6. a kind of method for detecting valve body surface dent described in accordance with the claim 1, it is characterised in that: the treatment box
(1) side wall is equipped with the first equipment cavity (11), is equipped with the first cylinder (111) in first equipment cavity (11), the fixed jaw
Component includes the second push rod (2) on first cylinder (111) stopper rod living and the folder on second push rod (2)
Pawl (21), the clamping jaw (21) is equipped with the first movable chamber, is equipped with fixed spring (221) in first movable chamber, described solid
Determine spring (221) one end be equipped with the first fixed block (22), first fixed block (22) be equipped with the first groove；The fixation
Claw assembly is two groups, is respectively arranged on the treatment box (1) two sides, the left side clamping jaw is equipped with third connecting plate (25), described
Right side clamping jaw is equipped with the 4th connecting plate (26) matched with the third connecting plate (25)；Valve body quilt under manipulator effect
After being put into processing chamber, the first cylinder (111) pushes the second push rod (2) to move forward, makes left side clamping jaw and right side clamping jaw phase
It is mutually close, until third connecting plate (25) and the 4th connecting plate (26) cooperate after left side clamping jaw is in contact with right side clamping jaw
Left side clamping jaw and right side clamping jaw are fixed, so that left side clamping jaw and right side clamping jaw is fixed together, valve body top is fixed on two
Between clamping jaw, the first fixed block (22) is in contact with body wall, and the first fixed block (22) enters in the first movable chamber, fixed
Spring (221) generates thrust to the first fixed block (22), so that the first fixed block (22) is generated extruding force to valve body, valve body is fixed
Detection processing is done to valve body in processing chamber.
7. a kind of method for detecting valve body surface dent described in accordance with the claim 1, it is characterised in that: the processing chamber
Inner wall is equipped with baffle (14), and the baffle (14) and first connecting plate (13) are oppositely arranged, set on the baffle (14)
There is the second groove, second groove inner wall is equipped with cambered surface；Treatment box (1) side wall is equipped with the second equipment cavity (16),
The second cylinder (161) are equipped in second equipment cavity (16), the second cylinder (161) piston rod is equipped with the first pushing block
(15), the first link block (151) are equipped at the top of first pushing block (15), skewed slot are equipped at the top of first link block (151),
The processing chamber bottom is equipped with the first opening communicated with the storage cavity (17)；After valve body is fixed in processing chamber, storing
Magnetic powder in chamber (17) is entered in cavity by feeding chamber (18), sprays magnetic powder out of spray orifice, part magnetic powder directly sprays
On valve body, another part magnetic powder is in contact by valve body with baffle (14) from valve body upper and lower part, impinges upon baffle (14)
On magnetic powder via baffle (14) rebound after impinge upon on the valve body other side, spray magnetic powder on another side wall of valve body；Extra
Magnetic powder is fallen from valve body, falls magnetic powder in processing chamber bottom, the second cylinder (161) pushes the first pushing block (15) to transport forward
Dynamic, the first pushing block (15) pushes the magnetic powder of processing chamber bottom toward the first opening, opens the magnetic powder of processing chamber bottom from first
It is fallen at mouthful in storage cavity (17), the magnetic powder of processing chamber bottom is recycled.
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| CN201910811702.0A CN110455912B (en) | 2019-08-30 | 2019-08-30 | Method for detecting surface dent of valve body |
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| CN201910811702.0A CN110455912B (en) | 2019-08-30 | 2019-08-30 | Method for detecting surface dent of valve body |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117233244A (en) * | 2023-11-10 | 2023-12-15 | 宝鸡市双宏液压机械有限公司 | Valve flaw detection device and flaw detection method |
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| CN117233244B (en) * | 2023-11-10 | 2024-01-30 | 宝鸡市双宏液压机械有限公司 | Valve flaw detection device and flaw detection method |
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| CN110455912B (en) | 2023-07-11 |
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